Merge pull request #33 from jacquesg/somefixes

C++ and AVR fixes

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "ports/cortex-m/libopencm3"]
+	path = ports/cortex-m/libopencm3
+	url = https://github.com/libopencm3/libopencm3.git

.travis.yml

@@ -0,0 +1,14 @@
+sudo: required
+
+language: c
+
+services:
+  - docker
+
+before_install:
+- docker pull kelvinlawson/atomthreads
+- docker pull kelvinlawson/atomthreads-cortex-m
+
+script:
+    - docker run --rm -v $TRAVIS_BUILD_DIR/:/data -t kelvinlawson/atomthreads /data/tests/commit-tests-arm.sh
+    - docker run --rm -v $TRAVIS_BUILD_DIR/:/data -t kelvinlawson/atomthreads /data/tests/commit-tests-avr.sh

README.md

@@ -1,9 +1,9 @@
 ---------------------------------------------------------------------------
 
-Library:      Atomthreads
-Author:       Kelvin Lawson <info@atomthreads.com>
-Website:      http://atomthreads.com
-License:      BSD Revised
+ * Library: Atomthreads
+ * Author: Kelvin Lawson <info@atomthreads.com>
+ * Website: http://atomthreads.com
+ * License: BSD Revised
 
 ---------------------------------------------------------------------------
 
@@ -39,9 +39,11 @@ make a software build for the AVR architecture see ports/avr/README.
 
 SOURCE TREE:
 
- * kernel        Core kernel sources
- * tests         Automated test suite
- * ports         CPU architecture ports
+ * kernel: Core kernel sources
+ * tests: Automated test suite
+ * ports: CPU architecture ports
 
 ---------------------------------------------------------------------------
 
+AUTOMATED TESTS STATE:
+ * Continuous Integration hosted at travis-ci.org: [![Build Status](https://travis-ci.org/kelvinlawson/atomthreads.svg?branch=master)](https://travis-ci.org/kelvinlawson/atomthreads)

kernel/atom.h

@@ -50,6 +50,11 @@ typedef struct atom_tcb
      */
     POINTER sp_save_ptr;
 
+    /* Thread's port specific private data */
+#if defined(THREAD_PORT_PRIV)
+    THREAD_PORT_PRIV;
+#endif
+
     /* Thread priority (0-255) */
     uint8_t priority;
 
@@ -65,6 +70,7 @@ typedef struct atom_tcb
     uint8_t suspended;            /* TRUE if task is currently suspended */
     uint8_t suspend_wake_status;  /* Status returned to woken suspend calls */
     ATOM_TIMER *suspend_timo_cb;  /* Callback registered for suspension timeouts */
+    uint8_t terminated;           /* TRUE if task is being terminated (run to completion) */
 
     /* Details used if thread stack-checking is required */
 #ifdef ATOM_STACK_CHECKING
@@ -72,10 +78,6 @@ typedef struct atom_tcb
     uint32_t stack_size;          /* Size of stack allocation in bytes */
 #endif
 
-#ifdef ATOM_TLS
-	ATOM_TLS                    /* Thread Local Storage */
-#endif
-
 } ATOM_TCB;
 
 

kernel/atomkernel.c

@@ -241,10 +241,11 @@ void atomSched (uint8_t timer_tick)
     CRITICAL_START ();
 
     /**
-     * If the current thread is going into suspension, then
-     * unconditionally dequeue the next thread for execution.
+     * If the current thread is going into suspension or is being
+     * terminated (run to completion), then unconditionally dequeue
+     * the next thread for execution.
      */
-    if (curr_tcb->suspended == TRUE)
+    if ((curr_tcb->suspended == TRUE) || (curr_tcb->terminated == TRUE))
     {
         /**
          * Dequeue the next ready to run thread. There will always be
@@ -331,6 +332,13 @@ void atomSched (uint8_t timer_tick)
  */
 static void atomThreadSwitch(ATOM_TCB *old_tcb, ATOM_TCB *new_tcb)
 {
+    /**
+     * The context switch will shift execution to a different thread. The
+     * new thread is now ready to run so clear its suspend status in
+     * preparation for it waking up.
+     */
+    new_tcb->suspended = FALSE;
+
     /**
      * Check if the new thread is actually the current one, in which
      * case we don't need to do any context switch. This can happen
@@ -345,14 +353,6 @@ static void atomThreadSwitch(ATOM_TCB *old_tcb, ATOM_TCB *new_tcb)
         /* Call the architecture-specific context switch */
         archContextSwitch (old_tcb, new_tcb);
     }
-
-    /**
-     * The context switch shifted execution to a different thread. By the time
-     * we get back here, we are running in old_tcb context again. Clear its
-     * suspend status now that we're back.
-     */
-    old_tcb->suspended = FALSE;
-
 }
 
 
@@ -404,6 +404,7 @@ uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_poin
 
         /* Set up the TCB initial values */
         tcb_ptr->suspended = FALSE;
+        tcb_ptr->terminated = FALSE;
         tcb_ptr->priority = priority;
         tcb_ptr->prev_tcb = NULL;
         tcb_ptr->next_tcb = NULL;

kernel/atomsem.h

@@ -37,7 +37,7 @@ extern "C" {
 typedef struct atom_sem
 {
     ATOM_TCB *  suspQ;  /* Queue of threads suspended on this semaphore */
-    uint8_t       count;  /* Semaphore count */
+    uint8_t     count;  /* Semaphore count */
 } ATOM_SEM;
 
 extern uint8_t atomSemCreate (ATOM_SEM *sem, uint8_t initial_count);

kernel/atomtimer.c

@@ -408,7 +408,8 @@ uint8_t atomTimerDelay (uint32_t ticks)
  */
 static void atomTimerCallbacks (void)
 {
-    ATOM_TIMER *prev_ptr, *next_ptr;
+    ATOM_TIMER *prev_ptr, *next_ptr, *saved_next_ptr;
+    ATOM_TIMER *callback_list_tail = NULL, *callback_list_head = NULL;
 
     /*
      * Walk the list decrementing each timer's remaining ticks count and
@@ -417,6 +418,9 @@ static void atomTimerCallbacks (void)
     prev_ptr = next_ptr = timer_queue;
     while (next_ptr)
     {
+        /* Save the next timer in the list (we adjust next_ptr for callbacks) */
+        saved_next_ptr = next_ptr->next_timer;
+ 
         /* Is this entry due? */
         if (--(next_ptr->cb_ticks) == 0)
         {
@@ -432,11 +436,29 @@ static void atomTimerCallbacks (void)
                 prev_ptr->next_timer = next_ptr->next_timer;
             }
 
-            /* Call the registered callback */
-            if (next_ptr->cb_func)
+            /*
+             * Add this timer to the list of callbacks to run later when
+             * we've finished walking the list (we shouldn't call callbacks
+             * now in case they want to register new timers and hence walk
+             * the timer list.
+             *
+             * We reuse the ATOM_TIMER structure's next_ptr to maintain the
+             * callback list.
+             */
+            if (callback_list_head == NULL)
             {
-                next_ptr->cb_func (next_ptr->cb_data);
+                /* First callback request in the list */ 
+                callback_list_head = callback_list_tail = next_ptr;
             }
+            else
+            {
+                /* Add callback request to the list tail */
+                callback_list_tail->next_timer = next_ptr;
+                callback_list_tail = callback_list_tail->next_timer;
+            }
+
+            /* Mark this timer as the end of the callback list */
+            next_ptr->next_timer = NULL;
 
             /* Do not update prev_ptr, we have just removed this one */
 
@@ -453,8 +475,34 @@ static void atomTimerCallbacks (void)
         }
 
         /* Move on to the next in the list */
-        next_ptr = next_ptr->next_timer;
+        next_ptr = saved_next_ptr;
+    }
 
+    /*
+     * Check if any callbacks were due. We call them after we walk the list
+     * in case they want to register new timers (and hence walk the list).
+     */
+    if (callback_list_head)
+    {
+        /* Walk the callback list */
+        next_ptr = callback_list_head;
+        while (next_ptr)
+        {
+            /*
+             *  Save the next timer in the list (in case the callback
+             *  modifies the list by registering again.
+             */
+            saved_next_ptr = next_ptr->next_timer;
+
+            /* Call the registered callback */
+            if (next_ptr->cb_func)
+            {
+                next_ptr->cb_func (next_ptr->cb_data);
+            }
+
+            /* Move on to the next callback in the list */
+            next_ptr = saved_next_ptr;
+        }
     }
 
 }

platforms/lpc17xx/CMSISv2p00_LPC17xx/inc/core_cmFunc.h

@@ -1,844 +0,0 @@
-/**************************************************************************//**
- * @file     core_cmFunc.h
- * @brief    CMSIS Cortex-M Core Function Access Header File
- * @version  V2.01
- * @date     06. December 2010
- *
- * @note
- * Copyright (C) 2009-2010 ARM Limited. All rights reserved.
- *
- * @par
- * ARM Limited (ARM) is supplying this software for use with Cortex-M 
- * processor based microcontrollers.  This file can be freely distributed 
- * within development tools that are supporting such ARM based processors. 
- *
- * @par
- * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
- * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
- * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
- * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
- *
- ******************************************************************************/
-
-#ifndef __CORE_CMFUNC_H__
-#define __CORE_CMFUNC_H__
-
-/* ###########################  Core Function Access  ########################### */
-/** \ingroup  CMSIS_Core_FunctionInterface   
-    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
-  @{
- */
-
-#if defined ( __CC_ARM   ) /*------------------ RealView Compiler ----------------*/
-/* ARM armcc specific functions */
-
-/* intrinsic void __enable_irq();     */
-/* intrinsic void __disable_irq();    */
-
-/** \brief  Get Control Register
-
-    This function returns the content of the Control Register.
-
-    \return               Control Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_CONTROL(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_CONTROL(void)
-{
-  register uint32_t __regControl         __ASM("control");
-  return(__regControl);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Control Register
-
-    This function writes the given value to the Control Register.
-
-    \param [in]    control  Control Register value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          void __set_CONTROL(uint32_t control);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE void __set_CONTROL(uint32_t control)
-{
-  register uint32_t __regControl         __ASM("control");
-  __regControl = control;
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get ISPR Register
-
-    This function returns the content of the ISPR Register.
-
-    \return               ISPR Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_IPSR(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_IPSR(void)
-{
-  register uint32_t __regIPSR          __ASM("ipsr");
-  return(__regIPSR);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get APSR Register
-
-    This function returns the content of the APSR Register.
-
-    \return               APSR Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_APSR(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_APSR(void)
-{
-  register uint32_t __regAPSR          __ASM("apsr");
-  return(__regAPSR);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get xPSR Register
-
-    This function returns the content of the xPSR Register.
-
-    \return               xPSR Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_xPSR(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_xPSR(void)
-{
-  register uint32_t __regXPSR          __ASM("xpsr");
-  return(__regXPSR);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get Process Stack Pointer
-
-    This function returns the current value of the Process Stack Pointer (PSP).
-
-    \return               PSP Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_PSP(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_PSP(void)
-{
-  register uint32_t __regProcessStackPointer  __ASM("psp");
-  return(__regProcessStackPointer);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Process Stack Pointer
-
-    This function assigns the given value to the Process Stack Pointer (PSP).
-
-    \param [in]    topOfProcStack  Process Stack Pointer value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          void __set_PSP(uint32_t topOfProcStack);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE void __set_PSP(uint32_t topOfProcStack)
-{
-  register uint32_t __regProcessStackPointer  __ASM("psp");
-  __regProcessStackPointer = topOfProcStack;
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get Main Stack Pointer
-
-    This function returns the current value of the Main Stack Pointer (MSP).
-
-    \return               MSP Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_MSP(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_MSP(void)
-{
-  register uint32_t __regMainStackPointer     __ASM("msp");
-  return(__regMainStackPointer);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Main Stack Pointer
-
-    This function assigns the given value to the Main Stack Pointer (MSP).
-
-    \param [in]    topOfMainStack  Main Stack Pointer value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          void __set_MSP(uint32_t topOfMainStack);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE void __set_MSP(uint32_t topOfMainStack)
-{
-  register uint32_t __regMainStackPointer     __ASM("msp");
-  __regMainStackPointer = topOfMainStack;
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get Priority Mask
-
-    This function returns the current state of the priority mask bit from the Priority Mask Register.
-
-    \return               Priority Mask value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_PRIMASK(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_PRIMASK(void)
-{
-  register uint32_t __regPriMask         __ASM("primask");
-  return(__regPriMask);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Priority Mask
-
-    This function assigns the given value to the Priority Mask Register.
-
-    \param [in]    priMask  Priority Mask
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          void __set_PRIMASK(uint32_t priMask);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE void __set_PRIMASK(uint32_t priMask)
-{
-  register uint32_t __regPriMask         __ASM("primask");
-  __regPriMask = (priMask);
-}
-#endif /*  __ARMCC_VERSION  */ 
- 
-
-#if       (__CORTEX_M >= 0x03)
-
-/** \brief  Enable FIQ
-
-    This function enables FIQ interrupts by clearing the F-bit in the CPSR.
-    Can only be executed in Privileged modes.
- */
-#define __enable_fault_irq                __enable_fiq
-
-
-/** \brief  Disable FIQ
-
-    This function disables FIQ interrupts by setting the F-bit in the CPSR.
-    Can only be executed in Privileged modes.
- */
-#define __disable_fault_irq               __disable_fiq
-
-
-/** \brief  Get Base Priority
-
-    This function returns the current value of the Base Priority register.
-
-    \return               Base Priority register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_BASEPRI(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t  __get_BASEPRI(void)
-{
-  register uint32_t __regBasePri         __ASM("basepri");
-  return(__regBasePri);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Base Priority
-
-    This function assigns the given value to the Base Priority register.
-
-    \param [in]    basePri  Base Priority value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          void __set_BASEPRI(uint32_t basePri);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE void __set_BASEPRI(uint32_t basePri)
-{
-  register uint32_t __regBasePri         __ASM("basepri");
-  __regBasePri = (basePri & 0xff);
-}
-#endif /*  __ARMCC_VERSION  */ 
- 
-
-/** \brief  Get Fault Mask
-
-    This function returns the current value of the Fault Mask register.
-
-    \return               Fault Mask register value
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          uint32_t __get_FAULTMASK(void);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE uint32_t __get_FAULTMASK(void)
-{
-  register uint32_t __regFaultMask       __ASM("faultmask");
-  return(__regFaultMask);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Fault Mask
-
-    This function assigns the given value to the Fault Mask register.
-
-    \param [in]    faultMask  Fault Mask value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-extern          void __set_FAULTMASK(uint32_t faultMask);
-#else  /* (__ARMCC_VERSION >= 400000) */
-static __INLINE void __set_FAULTMASK(uint32_t faultMask)
-{
-  register uint32_t __regFaultMask       __ASM("faultmask");
-  __regFaultMask = (faultMask & 1);
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-#endif /* (__CORTEX_M >= 0x03) */
-
-
-#if       (__CORTEX_M == 0x04)
-
-/** \brief  Get FPSCR
-
-    This function returns the current value of the Floating Point Status/Control register.
-
-    \return               Floating Point Status/Control register value
- */
-static __INLINE uint32_t __get_FPSCR(void)
-{
-#if (__FPU_PRESENT == 1)
-  register uint32_t __regfpscr         __ASM("fpscr");
-  return(__regfpscr);
-#else
-   return(0);
-#endif
-}
-
-
-/** \brief  Set FPSCR
-
-    This function assigns the given value to the Floating Point Status/Control register.
-
-    \param [in]    fpscr  Floating Point Status/Control value to set
- */
-static __INLINE void __set_FPSCR(uint32_t fpscr)
-{
-#if (__FPU_PRESENT == 1)
-  register uint32_t __regfpscr         __ASM("fpscr");
-  __regfpscr = (fpscr);
-#endif
-}
-
-#endif /* (__CORTEX_M == 0x04) */
-
-
- #elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/
-/* IAR iccarm specific functions */
-
-#if defined (__ICCARM__)
-  #include <intrinsics.h>                     /* IAR Intrinsics   */
-#endif
-
-#pragma diag_suppress=Pe940
-
-/** \brief  Enable IRQ Interrupts
-
-  This function enables IRQ interrupts by clearing the I-bit in the CPSR.
-  Can only be executed in Privileged modes.
- */
-#define __enable_irq                              __enable_interrupt
-
-
-/** \brief  Disable IRQ Interrupts
-
-  This function disables IRQ interrupts by setting the I-bit in the CPSR.
-  Can only be executed in Privileged modes.
- */
-#define __disable_irq                             __disable_interrupt
-
-
-/* intrinsic unsigned long __get_CONTROL( void ); (see intrinsic.h) */
-/* intrinsic void __set_CONTROL( unsigned long ); (see intrinsic.h) */
-
-
-/** \brief  Get ISPR Register
-
-    This function returns the content of the ISPR Register.
-
-    \return               ISPR Register value
- */
-static uint32_t __get_IPSR(void)
-{
-  __ASM("mrs r0, ipsr");
-}
-
-
-/** \brief  Get APSR Register
-
-    This function returns the content of the APSR Register.
-
-    \return               APSR Register value
- */
-static uint32_t __get_APSR(void)
-{
-  __ASM("mrs r0, apsr");
-}
-
-
-/** \brief  Get xPSR Register
-
-    This function returns the content of the xPSR Register.
-
-    \return               xPSR Register value
- */
-static uint32_t __get_xPSR(void)
-{
-  __ASM("mrs r0, psr");           // assembler does not know "xpsr"
-}
-
-
-/** \brief  Get Process Stack Pointer
-
-    This function returns the current value of the Process Stack Pointer (PSP).
-
-    \return               PSP Register value
- */
-static uint32_t __get_PSP(void)
-{
-  __ASM("mrs r0, psp");
-}
- 
-
-/** \brief  Set Process Stack Pointer
-
-    This function assigns the given value to the Process Stack Pointer (PSP).
-
-    \param [in]    topOfProcStack  Process Stack Pointer value to set
- */
-static void __set_PSP(uint32_t topOfProcStack)
-{
-  __ASM("msr psp, r0");
-}
-
-
-/** \brief  Get Main Stack Pointer
-
-    This function returns the current value of the Main Stack Pointer (MSP).
-
-    \return               MSP Register value
- */
-static uint32_t __get_MSP(void)
-{
-  __ASM("mrs r0, msp");
-}
- 
-
-/** \brief  Set Main Stack Pointer
-
-    This function assigns the given value to the Main Stack Pointer (MSP).
-
-    \param [in]    topOfMainStack  Main Stack Pointer value to set
- */
-static void __set_MSP(uint32_t topOfMainStack)
-{
-  __ASM("msr msp, r0");
-}
- 
-
-/* intrinsic unsigned long __get_PRIMASK( void ); (see intrinsic.h) */
-/* intrinsic void __set_PRIMASK( unsigned long ); (see intrinsic.h) */
- 
-
-#if       (__CORTEX_M >= 0x03)
-
-/** \brief  Enable FIQ
-
-    This function enables FIQ interrupts by clearing the F-bit in the CPSR.
-    Can only be executed in Privileged modes.
- */
-static __INLINE void __enable_fault_irq(void)
-{
-  __ASM ("cpsie f");
-}
-
-
-/** \brief  Disable FIQ
-
-    This function disables FIQ interrupts by setting the F-bit in the CPSR.
-    Can only be executed in Privileged modes.
- */
-static __INLINE void __disable_fault_irq(void)
-{
-  __ASM ("cpsid f");
-}
-
-
-/* intrinsic unsigned long __get_BASEPRI( void );   (see intrinsic.h) */
-/* intrinsic void __set_BASEPRI( unsigned long );   (see intrinsic.h) */
-/* intrinsic unsigned long __get_FAULTMASK( void ); (see intrinsic.h) */
-/* intrinsic void __set_FAULTMASK(unsigned long);   (see intrinsic.h) */
-
-#endif /* (__CORTEX_M >= 0x03) */
-
-
-#if       (__CORTEX_M == 0x04)
-
-/** \brief  Get FPSCR
-
-    This function returns the current value of the Floating Point Status/Control register.
-
-    \return               Floating Point Status/Control register value
- */
-static uint32_t __get_FPSCR(void)
-{
-#if (__FPU_PRESENT == 1)
-  __ASM("vmrs r0, fpscr"); 
-#else
-  return(0);
-#endif
-}
-
-
-/** \brief  Set FPSCR
-
-    This function assigns the given value to the Floating Point Status/Control register.
-
-    \param [in]    fpscr  Floating Point Status/Control value to set
- */
-static void __set_FPSCR(uint32_t fpscr)
-{
-#if (__FPU_PRESENT == 1)
-  __ASM("vmsr fpscr, r0");
-#endif
-}
-
-#endif /* (__CORTEX_M == 0x04) */
-
-#pragma diag_default=Pe940
-
-
-#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
-/* GNU gcc specific functions */
-
-/** \brief  Enable IRQ Interrupts
-
-  This function enables IRQ interrupts by clearing the I-bit in the CPSR.
-  Can only be executed in Privileged modes.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __enable_irq(void)
-{
-  __ASM volatile ("cpsie i");
-}
-
-
-/** \brief  Disable IRQ Interrupts
-
-  This function disables IRQ interrupts by setting the I-bit in the CPSR.
-  Can only be executed in Privileged modes.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __disable_irq(void)
-{
-  __ASM volatile ("cpsid i");
-}
-
-
-/** \brief  Get Control Register
-
-    This function returns the content of the Control Register.
-
-    \return               Control Register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_CONTROL(void)
-{
-  uint32_t result;
-
-  __ASM volatile ("MRS %0, control" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Set Control Register
-
-    This function writes the given value to the Control Register.
-
-    \param [in]    control  Control Register value to set
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_CONTROL(uint32_t control)
-{
-  __ASM volatile ("MSR control, %0" : : "r" (control) );
-}
-
-
-/** \brief  Get ISPR Register
-
-    This function returns the content of the ISPR Register.
-
-    \return               ISPR Register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_IPSR(void)
-{
-  uint32_t result;
-
-  __ASM volatile ("MRS %0, ipsr" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Get APSR Register
-
-    This function returns the content of the APSR Register.
-
-    \return               APSR Register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_APSR(void)
-{
-  uint32_t result;
-
-  __ASM volatile ("MRS %0, apsr" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Get xPSR Register
-
-    This function returns the content of the xPSR Register.
-
-    \return               xPSR Register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_xPSR(void)
-{
-  uint32_t result;
-
-  __ASM volatile ("MRS %0, xpsr" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Get Process Stack Pointer
-
-    This function returns the current value of the Process Stack Pointer (PSP).
-
-    \return               PSP Register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_PSP(void)
-{
-  register uint32_t result;
-
-  __ASM volatile ("MRS %0, psp\n"  : "=r" (result) );
-  return(result);
-}
- 
-
-/** \brief  Set Process Stack Pointer
-
-    This function assigns the given value to the Process Stack Pointer (PSP).
-
-    \param [in]    topOfProcStack  Process Stack Pointer value to set
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_PSP(uint32_t topOfProcStack)
-{
-  __ASM volatile ("MSR psp, %0\n" : : "r" (topOfProcStack) );
-}
-
-
-/** \brief  Get Main Stack Pointer
-
-    This function returns the current value of the Main Stack Pointer (MSP).
-
-    \return               MSP Register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_MSP(void)
-{
-  register uint32_t result;
-
-  __ASM volatile ("MRS %0, msp\n" : "=r" (result) );
-  return(result);
-}
- 
-
-/** \brief  Set Main Stack Pointer
-
-    This function assigns the given value to the Main Stack Pointer (MSP).
-
-    \param [in]    topOfMainStack  Main Stack Pointer value to set
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_MSP(uint32_t topOfMainStack)
-{
-  __ASM volatile ("MSR msp, %0\n" : : "r" (topOfMainStack) );
-}
-
-
-/** \brief  Get Priority Mask
-
-    This function returns the current state of the priority mask bit from the Priority Mask Register.
-
-    \return               Priority Mask value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_PRIMASK(void)
-{
-  uint32_t result;
-
-  __ASM volatile ("MRS %0, primask" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Set Priority Mask
-
-    This function assigns the given value to the Priority Mask Register.
-
-    \param [in]    priMask  Priority Mask
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_PRIMASK(uint32_t priMask)
-{
-  __ASM volatile ("MSR primask, %0" : : "r" (priMask) );
-}
- 
-
-#if       (__CORTEX_M >= 0x03)
-
-/** \brief  Enable FIQ
-
-    This function enables FIQ interrupts by clearing the F-bit in the CPSR.
-    Can only be executed in Privileged modes.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __enable_fault_irq(void)
-{
-  __ASM volatile ("cpsie f");
-}
-
-
-/** \brief  Disable FIQ
-
-    This function disables FIQ interrupts by setting the F-bit in the CPSR.
-    Can only be executed in Privileged modes.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __disable_fault_irq(void)
-{
-  __ASM volatile ("cpsid f");
-}
-
-
-/** \brief  Get Base Priority
-
-    This function returns the current value of the Base Priority register.
-
-    \return               Base Priority register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_BASEPRI(void)
-{
-  uint32_t result;
-  
-  __ASM volatile ("MRS %0, basepri_max" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Set Base Priority
-
-    This function assigns the given value to the Base Priority register.
-
-    \param [in]    basePri  Base Priority value to set
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_BASEPRI(uint32_t value)
-{
-  __ASM volatile ("MSR basepri, %0" : : "r" (value) );
-}
-
-
-/** \brief  Get Fault Mask
-
-    This function returns the current value of the Fault Mask register.
-
-    \return               Fault Mask register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_FAULTMASK(void)
-{
-  uint32_t result;
-  
-  __ASM volatile ("MRS %0, faultmask" : "=r" (result) );
-  return(result);
-}
-
-
-/** \brief  Set Fault Mask
-
-    This function assigns the given value to the Fault Mask register.
-
-    \param [in]    faultMask  Fault Mask value to set
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_FAULTMASK(uint32_t faultMask)
-{
-  __ASM volatile ("MSR faultmask, %0" : : "r" (faultMask) );
-}
-
-#endif /* (__CORTEX_M >= 0x03) */
-
-
-#if       (__CORTEX_M == 0x04)
-
-/** \brief  Get FPSCR
-
-    This function returns the current value of the Floating Point Status/Control register.
-
-    \return               Floating Point Status/Control register value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __get_FPSCR(void)
-{
-#if (__FPU_PRESENT == 1)
-  uint32_t result;
-
-  __ASM volatile ("MRS %0, fpscr" : "=r" (result) );
-  return(result);
-#else
-   return(0);
-#endif
-}
-
-
-/** \brief  Set FPSCR
-
-    This function assigns the given value to the Floating Point Status/Control register.
-
-    \param [in]    fpscr  Floating Point Status/Control value to set
- */
-__attribute__( ( always_inline ) ) static __INLINE void __set_FPSCR(uint32_t fpscr)
-{
-#if (__FPU_PRESENT == 1)
-  __ASM volatile ("MSR fpscr, %0" : : "r" (fpscr) );
-#endif
-}
-
-#endif /* (__CORTEX_M == 0x04) */
-
-
-#elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/
-/* TASKING carm specific functions */
-
-/*
- * The CMSIS functions have been implemented as intrinsics in the compiler.
- * Please use "carm -?i" to get an up to date list of all instrinsics,
- * Including the CMSIS ones.
- */
-
-#endif
-
-/*@} end of CMSIS_Core_RegAccFunctions */
-
-
-#endif /* __CORE_CMFUNC_H__ */

platforms/lpc17xx/CMSISv2p00_LPC17xx/inc/core_cmInstr.h

@@ -1,775 +0,0 @@
-/**************************************************************************//**
- * @file     core_cmInstr.h
- * @brief    CMSIS Cortex-M Core Instruction Access Header File
- * @version  V2.01
- * @date     06. December 2010
- *
- * @note
- * Copyright (C) 2009-2010 ARM Limited. All rights reserved.
- *
- * @par
- * ARM Limited (ARM) is supplying this software for use with Cortex-M 
- * processor based microcontrollers.  This file can be freely distributed 
- * within development tools that are supporting such ARM based processors. 
- *
- * @par
- * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
- * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
- * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
- * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
- *
- ******************************************************************************/
-
-#ifndef __CORE_CMINSTR_H__
-#define __CORE_CMINSTR_H__
-
-
-/* ##########################  Core Instruction Access  ######################### */
-/** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
-  Access to dedicated instructions
-  @{
-*/
-
-#if defined ( __CC_ARM   ) /*------------------ RealView Compiler ----------------*/
-/* ARM armcc specific functions */
-
-/** \brief  No Operation
-
-    No Operation does nothing. This instruction can be used for code alignment purposes.
- */
-#define __NOP                             __nop
-
-
-/** \brief  Wait For Interrupt
-
-    Wait For Interrupt is a hint instruction that suspends execution
-    until one of a number of events occurs.
- */
-#define __WFI                             __wfi
-
-
-/** \brief  Wait For Event
-
-    Wait For Event is a hint instruction that permits the processor to enter
-    a low-power state until one of a number of events occurs.
- */
-#define __WFE                             __wfe
-
-
-/** \brief  Send Event
-
-    Send Event is a hint instruction. It causes an event to be signaled to the CPU.
- */
-#define __SEV                             __sev
-
-
-/** \brief  Instruction Synchronization Barrier
-
-    Instruction Synchronization Barrier flushes the pipeline in the processor, 
-    so that all instructions following the ISB are fetched from cache or 
-    memory, after the instruction has been completed.
- */
-#define __ISB()                           __isb(0xF)
-
-
-/** \brief  Data Synchronization Barrier
-
-    This function acts as a special kind of Data Memory Barrier. 
-    It completes when all explicit memory accesses before this instruction complete.
- */
-#define __DSB()                           __dsb(0xF)
-
-
-/** \brief  Data Memory Barrier
-
-    This function ensures the apparent order of the explicit memory operations before 
-    and after the instruction, without ensuring their completion.
- */
-#define __DMB()                           __dmb(0xF)
-
-
-/** \brief  Reverse byte order (32 bit)
-
-    This function reverses the byte order in integer value.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-#define __REV                             __rev
-
-
-/** \brief  Reverse byte order (16 bit)
-
-    This function reverses the byte order in two unsigned short values.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-#if (__ARMCC_VERSION < 400677)
-extern uint32_t __REV16(uint32_t value);
-#else  /* (__ARMCC_VERSION >= 400677)  */
-static __INLINE __ASM uint32_t __REV16(uint32_t value)
-{
-  rev16 r0, r0
-  bx lr
-}
-#endif /* __ARMCC_VERSION  */ 
-
-
-/** \brief  Reverse byte order in signed short value
-
-    This function reverses the byte order in a signed short value with sign extension to integer.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-#if (__ARMCC_VERSION < 400677)
-extern int32_t __REVSH(int32_t value);
-#else  /* (__ARMCC_VERSION >= 400677)  */
-static __INLINE __ASM int32_t __REVSH(int32_t value)
-{
-  revsh r0, r0
-  bx lr
-}
-#endif /* __ARMCC_VERSION  */ 
-
-
-#if       (__CORTEX_M >= 0x03)
-
-/** \brief  Reverse bit order of value
-
-    This function reverses the bit order of the given value.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-#define __RBIT                            __rbit
-
-
-/** \brief  LDR Exclusive (8 bit)
-
-    This function performs a exclusive LDR command for 8 bit value.
-
-    \param [in]    ptr  Pointer to data
-    \return             value of type uint8_t at (*ptr)
- */
-#define __LDREXB(ptr)                     ((uint8_t ) __ldrex(ptr))
-
-
-/** \brief  LDR Exclusive (16 bit)
-
-    This function performs a exclusive LDR command for 16 bit values.
-
-    \param [in]    ptr  Pointer to data
-    \return        value of type uint16_t at (*ptr)
- */
-#define __LDREXH(ptr)                     ((uint16_t) __ldrex(ptr))
-
-
-/** \brief  LDR Exclusive (32 bit)
-
-    This function performs a exclusive LDR command for 32 bit values.
-
-    \param [in]    ptr  Pointer to data
-    \return        value of type uint32_t at (*ptr)
- */
-#define __LDREXW(ptr)                     ((uint32_t ) __ldrex(ptr))
-
-
-/** \brief  STR Exclusive (8 bit)
-
-    This function performs a exclusive STR command for 8 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-#define __STREXB(value, ptr)              __strex(value, ptr)
-
-
-/** \brief  STR Exclusive (16 bit)
-
-    This function performs a exclusive STR command for 16 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-#define __STREXH(value, ptr)              __strex(value, ptr)
-
-
-/** \brief  STR Exclusive (32 bit)
-
-    This function performs a exclusive STR command for 32 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-#define __STREXW(value, ptr)              __strex(value, ptr)
-
-
-/** \brief  Remove the exclusive lock
-
-    This function removes the exclusive lock which is created by LDREX.
-
- */
-#if (__ARMCC_VERSION < 400000)
-extern void __CLREX(void);
-#else  /* (__ARMCC_VERSION >= 400000)  */
-#define __CLREX                           __clrex
-#endif /* __ARMCC_VERSION  */ 
-
-
-/** \brief  Signed Saturate
-
-    This function saturates a signed value.
-
-    \param [in]  value  Value to be saturated
-    \param [in]    sat  Bit position to saturate to (1..32)
-    \return             Saturated value
- */
-#define __SSAT                            __ssat
-
-
-/** \brief  Unsigned Saturate
-
-    This function saturates an unsigned value.
-
-    \param [in]  value  Value to be saturated
-    \param [in]    sat  Bit position to saturate to (0..31)
-    \return             Saturated value
- */
-#define __USAT                            __usat
-
-
-/** \brief  Count leading zeros
-
-    This function counts the number of leading zeros of a data value.
-
-    \param [in]  value  Value to count the leading zeros
-    \return             number of leading zeros in value
- */
-#define __CLZ                             __clz 
-
-#endif /* (__CORTEX_M >= 0x03) */
-
-
-
-#elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/
-/* IAR iccarm specific functions */
-
-#include <intrinsics.h>                     /* IAR Intrinsics   */
-
-#pragma diag_suppress=Pe940
-
-/** \brief  No Operation
-
-    No Operation does nothing. This instruction can be used for code alignment purposes.
- */
-#define __NOP                           __no_operation
-
-
-/** \brief  Wait For Interrupt
-
-    Wait For Interrupt is a hint instruction that suspends execution
-    until one of a number of events occurs.
- */
-static __INLINE  void __WFI(void)
-{
-  __ASM ("wfi");
-}
-
-
-/** \brief  Wait For Event
-
-    Wait For Event is a hint instruction that permits the processor to enter
-    a low-power state until one of a number of events occurs.
- */
-static __INLINE  void __WFE(void)
-{
-  __ASM ("wfe");
-}
-
-
-/** \brief  Send Event
-
-    Send Event is a hint instruction. It causes an event to be signaled to the CPU.
- */
-static __INLINE  void __SEV(void)
-{
-  __ASM ("sev");
-}
-
-
-/* intrinsic     void __ISB(void)            (see intrinsics.h) */
-/* intrinsic     void __DSB(void)            (see intrinsics.h) */
-/* intrinsic     void __DMB(void)            (see intrinsics.h) */
-/* intrinsic uint32_t __REV(uint32_t value)  (see intrinsics.h) */
-/* intrinsic          __SSAT                 (see intrinsics.h) */
-/* intrinsic          __USAT                 (see intrinsics.h) */
-
-
-/** \brief  Reverse byte order (16 bit)
-
-    This function reverses the byte order in two unsigned short values.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-static uint32_t __REV16(uint32_t value)
-{
-  __ASM("rev16 r0, r0");
-}
-
-
-/* intrinsic uint32_t __REVSH(uint32_t value)  (see intrinsics.h */
-
-
-#if       (__CORTEX_M >= 0x03)
-
-/** \brief  Reverse bit order of value
-
-    This function reverses the bit order of the given value.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-static uint32_t __RBIT(uint32_t value)
-{
-  __ASM("rbit r0, r0");
-}
-
-
-/** \brief  LDR Exclusive (8 bit)
-
-    This function performs a exclusive LDR command for 8 bit value.
-
-    \param [in]    ptr  Pointer to data
-    \return             value of type uint8_t at (*ptr)
- */
-static uint8_t __LDREXB(volatile uint8_t *addr)
-{
-  __ASM("ldrexb r0, [r0]");
-}
-
-
-/** \brief  LDR Exclusive (16 bit)
-
-    This function performs a exclusive LDR command for 16 bit values.
-
-    \param [in]    ptr  Pointer to data
-    \return        value of type uint16_t at (*ptr)
- */
-static uint16_t __LDREXH(volatile uint16_t *addr)
-{
-  __ASM("ldrexh r0, [r0]");
-}
-
-
-/** \brief  LDR Exclusive (32 bit)
-
-    This function performs a exclusive LDR command for 32 bit values.
-
-    \param [in]    ptr  Pointer to data
-    \return        value of type uint32_t at (*ptr)
- */
-/* intrinsic unsigned long __LDREX(unsigned long *)  (see intrinsics.h) */
-static uint32_t __LDREXW(volatile uint32_t *addr)
-{
-  __ASM("ldrex r0, [r0]");
-}
-
-
-/** \brief  STR Exclusive (8 bit)
-
-    This function performs a exclusive STR command for 8 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-static uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
-{
-  __ASM("strexb r0, r0, [r1]");
-}
-
-
-/** \brief  STR Exclusive (16 bit)
-
-    This function performs a exclusive STR command for 16 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-static uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
-{
-  __ASM("strexh r0, r0, [r1]");
-}
-
-
-/** \brief  STR Exclusive (32 bit)
-
-    This function performs a exclusive STR command for 32 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-/* intrinsic unsigned long __STREX(unsigned long, unsigned long)  (see intrinsics.h )*/
-static uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
-{
-  __ASM("strex r0, r0, [r1]");
-}
-
-
-/** \brief  Remove the exclusive lock
-
-    This function removes the exclusive lock which is created by LDREX.
-
- */
-static __INLINE void __CLREX(void)
-{
-  __ASM ("clrex");
-}
-
-/* intrinsic   unsigned char __CLZ( unsigned long )      (see intrinsics.h) */
-
-#endif /* (__CORTEX_M >= 0x03) */
-
-#pragma diag_default=Pe940
-
-
-
-#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
-/* GNU gcc specific functions */
-
-/** \brief  No Operation
-
-    No Operation does nothing. This instruction can be used for code alignment purposes.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __NOP(void)
-{
-  __ASM volatile ("nop");
-}
-
-
-/** \brief  Wait For Interrupt
-
-    Wait For Interrupt is a hint instruction that suspends execution
-    until one of a number of events occurs.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __WFI(void)
-{
-  __ASM volatile ("wfi");
-}
-
-
-/** \brief  Wait For Event
-
-    Wait For Event is a hint instruction that permits the processor to enter
-    a low-power state until one of a number of events occurs.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __WFE(void)
-{
-  __ASM volatile ("wfe");
-}
-
-
-/** \brief  Send Event
-
-    Send Event is a hint instruction. It causes an event to be signaled to the CPU.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __SEV(void)
-{
-  __ASM volatile ("sev");
-}
-
-
-/** \brief  Instruction Synchronization Barrier
-
-    Instruction Synchronization Barrier flushes the pipeline in the processor, 
-    so that all instructions following the ISB are fetched from cache or 
-    memory, after the instruction has been completed.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __ISB(void)
-{
-  __ASM volatile ("isb");
-}
-
-
-/** \brief  Data Synchronization Barrier
-
-    This function acts as a special kind of Data Memory Barrier. 
-    It completes when all explicit memory accesses before this instruction complete.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __DSB(void)
-{
-  __ASM volatile ("dsb");
-}
-
-
-/** \brief  Data Memory Barrier
-
-    This function ensures the apparent order of the explicit memory operations before 
-    and after the instruction, without ensuring their completion.
- */
-__attribute__( ( always_inline ) ) static __INLINE void __DMB(void)
-{
-  __ASM volatile ("dmb");
-}
-
-
-/** \brief  Reverse byte order (32 bit)
-
-    This function reverses the byte order in integer value.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __REV(uint32_t value)
-{
-  uint32_t result;
-  
-  __ASM volatile ("rev %0, %1" : "=r" (result) : "r" (value) );
-  return(result);
-}
-
-
-/** \brief  Reverse byte order (16 bit)
-
-    This function reverses the byte order in two unsigned short values.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __REV16(uint32_t value)
-{
-  uint32_t result;
-  
-  __ASM volatile ("rev16 %0, %1" : "=r" (result) : "r" (value) );
-  return(result);
-}
-
-
-/** \brief  Reverse byte order in signed short value
-
-    This function reverses the byte order in a signed short value with sign extension to integer.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-__attribute__( ( always_inline ) ) static __INLINE int32_t __REVSH(int32_t value)
-{
-  uint32_t result;
-  
-  __ASM volatile ("revsh %0, %1" : "=r" (result) : "r" (value) );
-  return(result);
-}
-
-
-#if       (__CORTEX_M >= 0x03)
-
-/** \brief  Reverse bit order of value
-
-    This function reverses the bit order of the given value.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __RBIT(uint32_t value)
-{
-  uint32_t result;
-  
-   __ASM volatile ("rbit %0, %1" : "=r" (result) : "r" (value) );
-   return(result);
-}
-
-
-/** \brief  LDR Exclusive (8 bit)
-
-    This function performs a exclusive LDR command for 8 bit value.
-
-    \param [in]    ptr  Pointer to data
-    \return             value of type uint8_t at (*ptr)
- */
-__attribute__( ( always_inline ) ) static __INLINE uint8_t __LDREXB(volatile uint8_t *addr)
-{
-    uint8_t result;
-  
-   __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) );
-   return(result);
-}
-
-
-/** \brief  LDR Exclusive (16 bit)
-
-    This function performs a exclusive LDR command for 16 bit values.
-
-    \param [in]    ptr  Pointer to data
-    \return        value of type uint16_t at (*ptr)
- */
-__attribute__( ( always_inline ) ) static __INLINE uint16_t __LDREXH(volatile uint16_t *addr)
-{
-    uint16_t result;
-  
-   __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) );
-   return(result);
-}
-
-
-/** \brief  LDR Exclusive (32 bit)
-
-    This function performs a exclusive LDR command for 32 bit values.
-
-    \param [in]    ptr  Pointer to data
-    \return        value of type uint32_t at (*ptr)
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __LDREXW(volatile uint32_t *addr)
-{
-    uint32_t result;
-  
-   __ASM volatile ("ldrex %0, [%1]" : "=r" (result) : "r" (addr) );
-   return(result);
-}
-
-
-/** \brief  STR Exclusive (8 bit)
-
-    This function performs a exclusive STR command for 8 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
-{
-   uint32_t result;
-  
-   __ASM volatile ("strexb %0, %2, [%1]" : "=r" (result) : "r" (addr), "r" (value) );
-   return(result);
-}
-
-
-/** \brief  STR Exclusive (16 bit)
-
-    This function performs a exclusive STR command for 16 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
-{
-   uint32_t result;
-  
-   __ASM volatile ("strexh %0, %2, [%1]" : "=r" (result) : "r" (addr), "r" (value) );
-   return(result);
-}
-
-
-/** \brief  STR Exclusive (32 bit)
-
-    This function performs a exclusive STR command for 32 bit values.
-
-    \param [in]  value  Value to store
-    \param [in]    ptr  Pointer to location
-    \return          0  Function succeeded
-    \return          1  Function failed
- */
-__attribute__( ( always_inline ) ) static __INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
-{
-   uint32_t result;
-  
-   __ASM volatile ("strex %0, %2, [%1]" : "=r" (result) : "r" (addr), "r" (value) );
-   return(result);
-}
-
-
-/** \brief  Remove the exclusive lock
-
-    This function removes the exclusive lock which is created by LDREX.
-
- */
-__attribute__( ( always_inline ) ) static __INLINE void __CLREX(void)
-{
-  __ASM volatile ("clrex");
-}
-
-
-/** \brief  Signed Saturate
-
-    This function saturates a signed value.
-
-    \param [in]  value  Value to be saturated
-    \param [in]    sat  Bit position to saturate to (1..32)
-    \return             Saturated value
- */
-#define __SSAT(ARG1,ARG2) \
-({                          \
-  uint32_t __RES, __ARG1 = (ARG1); \
-  __ASM ("ssat %0, %1, %2" : "=r" (__RES) :  "I" (ARG2), "r" (__ARG1) ); \
-  __RES; \
- })
-
-
-/** \brief  Unsigned Saturate
-
-    This function saturates an unsigned value.
-
-    \param [in]  value  Value to be saturated
-    \param [in]    sat  Bit position to saturate to (0..31)
-    \return             Saturated value
- */
-#define __USAT(ARG1,ARG2) \
-({                          \
-  uint32_t __RES, __ARG1 = (ARG1); \
-  __ASM ("usat %0, %1, %2" : "=r" (__RES) :  "I" (ARG2), "r" (__ARG1) ); \
-  __RES; \
- })
-
-
-/** \brief  Count leading zeros
-
-    This function counts the number of leading zeros of a data value.
-
-    \param [in]  value  Value to count the leading zeros
-    \return             number of leading zeros in value
- */
-__attribute__( ( always_inline ) ) static __INLINE uint8_t __CLZ(uint32_t value)
-{
-  uint8_t result;
-  
-  __ASM volatile ("clz %0, %1" : "=r" (result) : "r" (value) );
-  return(result);
-}
-
-#endif /* (__CORTEX_M >= 0x03) */
-
-
-
-
-#elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/
-/* TASKING carm specific functions */
-
-/*
- * The CMSIS functions have been implemented as intrinsics in the compiler.
- * Please use "carm -?i" to get an up to date list of all instrinsics,
- * Including the CMSIS ones.
- */
-
-#endif
-
-/*@}*/ /* end of group CMSIS_Core_InstructionInterface */
-
-#endif /* __CORE_CMINSTR_H__ */

platforms/lpc17xx/CMSISv2p00_LPC17xx/inc/system_LPC17xx.h

@@ -1,64 +0,0 @@
-/**************************************************************************//**
- * @file     system_LPC17xx.h
- * @brief    CMSIS Cortex-M3 Device Peripheral Access Layer Header File
- *           for the NXP LPC17xx Device Series
- * @version  V1.02
- * @date     08. September 2009
- *
- * @note
- * Copyright (C) 2009 ARM Limited. All rights reserved.
- *
- * @par
- * ARM Limited (ARM) is supplying this software for use with Cortex-M 
- * processor based microcontrollers.  This file can be freely distributed 
- * within development tools that are supporting such ARM based processors. 
- *
- * @par
- * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
- * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
- * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
- * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
- *
- ******************************************************************************/
-
-
-#ifndef __SYSTEM_LPC17xx_H
-#define __SYSTEM_LPC17xx_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdint.h>
-
-extern uint32_t SystemCoreClock;     /*!< System Clock Frequency (Core Clock)  */
-
-
-/**
- * Initialize the system
- *
- * @param  none
- * @return none
- *
- * @brief  Setup the microcontroller system.
- *         Initialize the System and update the SystemCoreClock variable.
- */
-extern void SystemInit (void);
-
-/**
- * Update SystemCoreClock variable
- *
- * @param  none
- * @return none
- *
- * @brief  Updates the SystemCoreClock with current core Clock 
- *         retrieved from cpu registers.
- */
-extern void SystemCoreClockUpdate (void);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __SYSTEM_LPC17xx_H */

platforms/lpc17xx/CMSISv2p00_LPC17xx/src/core_cm3.c

@@ -1,339 +0,0 @@
-/**************************************************************************//**
- * @file     core_cm3.c
- * @brief    CMSIS Cortex-M3 Core Peripheral Access Layer Source File
- * @version  V2.00
- * @date     13. September 2010
- *
- * @note
- * Copyright (C) 2009-2010 ARM Limited. All rights reserved.
- *
- * @par
- * ARM Limited (ARM) is supplying this software for use with Cortex-M 
- * processor based microcontrollers.  This file can be freely distributed 
- * within development tools that are supporting such ARM based processors. 
- *
- * @par
- * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
- * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
- * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
- * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
- *
- ******************************************************************************/
-
-#include <stdint.h>
-
-/* define compiler specific symbols */
-#if defined ( __CC_ARM   )
-  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler          */
-  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler       */
-
-#elif defined ( __ICCARM__ )
-  #define __ASM           __asm                                       /*!< asm keyword for IAR Compiler          */
-  #define __INLINE        inline                                      /*!< inline keyword for IAR Compiler. Only avaiable in High optimization mode! */
-
-#elif defined   (  __GNUC__  )
-  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler          */
-  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler       */
-
-#elif defined   (  __TASKING__  )
-  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler      */
-  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler   */
-
-#endif
-
-
-/* ##########################  Core Instruction Access  ######################### */
-
-#if defined ( __CC_ARM   ) /*------------------ RealView Compiler ----------------*/
-
-/** \brief  Reverse byte order (16 bit)
-
-    This function reverses the byte order in two unsigned short values.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-#if (__ARMCC_VERSION < 400677)
-__ASM uint32_t __REV16(uint32_t value)
-{
-  rev16 r0, r0
-  bx lr
-}
-#endif /* __ARMCC_VERSION  */ 
-
-
-/** \brief  Reverse byte order in signed short value
-
-    This function reverses the byte order in a signed short value with sign extension to integer.
-
-    \param [in]    value  Value to reverse
-    \return               Reversed value
- */
-#if (__ARMCC_VERSION < 400677)
-__ASM int32_t __REVSH(int32_t value)
-{
-  revsh r0, r0
-  bx lr
-}
-#endif /* __ARMCC_VERSION  */ 
-
-
-/** \brief  Remove the exclusive lock
-
-    This function removes the exclusive lock which is created by LDREX.
-
- */
-#if (__ARMCC_VERSION < 400000)
-__ASM void __CLREX(void)
-{
-  clrex
-}
-#endif /* __ARMCC_VERSION  */ 
-
-
-#elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/
-/* obsolete */
-#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
-/* obsolete */
-#elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/
-/* obsolete */
-#endif
-
-
-/* ###########################  Core Function Access  ########################### */
-
-#if defined ( __CC_ARM   ) /*------------------ RealView Compiler ----------------*/
-
-/** \brief  Get Control Register
-
-    This function returns the content of the Control Register.
-
-    \return               Control Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_CONTROL(void)
-{
-  mrs r0, control
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Control Register
-
-    This function writes the given value to the Control Register.
-
-    \param [in]    control  Control Register value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM void __set_CONTROL(uint32_t control)
-{
-  msr control, r0
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get ISPR Register
-
-    This function returns the content of the ISPR Register.
-
-    \return               ISPR Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_IPSR(void)
-{
-  mrs r0, ipsr
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get APSR Register
-
-    This function returns the content of the APSR Register.
-
-    \return               APSR Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_APSR(void)
-{
-  mrs r0, apsr
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get xPSR Register
-
-    This function returns the content of the xPSR Register.
-
-    \return               xPSR Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_xPSR(void)
-{
-  mrs r0, xpsr
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get Process Stack Pointer
-
-    This function returns the current value of the Process Stack Pointer (PSP).
-
-    \return               PSP Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_PSP(void)
-{
-  mrs r0, psp
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Process Stack Pointer
-
-    This function assigns the given value to the Process Stack Pointer (PSP).
-
-    \param [in]    topOfProcStack  Process Stack Pointer value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM void __set_PSP(uint32_t topOfProcStack)
-{
-  msr psp, r0
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get Main Stack Pointer
-
-    This function returns the current value of the Main Stack Pointer (MSP).
-
-    \return               MSP Register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_MSP(void)
-{
-  mrs r0, msp
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Main Stack Pointer
-
-    This function assigns the given value to the Main Stack Pointer (MSP).
-
-    \param [in]    topOfMainStack  Main Stack Pointer value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM void __set_MSP(uint32_t mainStackPointer)
-{
-  msr msp, r0
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Get Base Priority
-
-    This function returns the current value of the Base Priority register.
-
-    \return               Base Priority register value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t  __get_BASEPRI(void)
-{
-  mrs r0, basepri
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Base Priority
-
-    This function assigns the given value to the Base Priority register.
-
-    \param [in]    basePri  Base Priority value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM void __set_BASEPRI(uint32_t basePri)
-{
-  msr basepri, r0
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
- 
-/** \brief  Get Priority Mask
-
-    This function returns the current state of the priority mask bit from the Priority Mask Register.
-
-    \return               Priority Mask value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t __get_PRIMASK(void)
-{
-  mrs r0, primask
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set Priority Mask
-
-    This function assigns the given value to the Priority Mask Register.
-
-    \param [in]    priMask  Priority Mask
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM void __set_PRIMASK(uint32_t priMask)
-{
-  msr primask, r0
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
- 
-
-/** \brief  Get Fault Mask
-
-    This function returns the current value of the Fault Mask Register.
-
-    \return               Fault Mask value
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM uint32_t  __get_FAULTMASK(void)
-{
-  mrs r0, faultmask
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-/** \brief  Set the Fault Mask
-
-     This function assigns the given value to the Fault Mask Register.
-
-    \param [in]    faultMask  Fault Mask value value to set
- */
-#if       (__ARMCC_VERSION <  400000)
-__ASM void __set_FAULTMASK(uint32_t faultMask)
-{
-  msr faultmask, r0
-  bx lr
-}
-#endif /*  __ARMCC_VERSION  */ 
-
-
-
-#elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/
-/* obsolete */
-#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
-/* obsolete */
-#elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/
-/* obsolete */
-#endif

platforms/lpc17xx/CMSISv2p00_LPC17xx/src/system_LPC17xx.c

@@ -1,532 +0,0 @@
-/**************************************************************************//**
- * @file     system_LPC17xx.c
- * @brief    CMSIS Cortex-M3 Device Peripheral Access Layer Source File
- *           for the NXP LPC17xx Device Series
- * @version  V1.08
- * @date     12. May 2010
- *
- * @note
- * Copyright (C) 2009 ARM Limited. All rights reserved.
- *
- * @par
- * ARM Limited (ARM) is supplying this software for use with Cortex-M 
- * processor based microcontrollers.  This file can be freely distributed 
- * within development tools that are supporting such ARM based processors. 
- *
- * @par
- * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
- * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
- * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
- * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
- *
- ******************************************************************************/
-
-
-#include <stdint.h>
-#include "LPC17xx.h"
-
-/*
-//-------- <<< Use Configuration Wizard in Context Menu >>> ------------------
-*/
-
-/*--------------------- Clock Configuration ----------------------------------
-//
-// <e> Clock Configuration
-//   <h> System Controls and Status Register (SCS)
-//     <o1.4>    OSCRANGE: Main Oscillator Range Select
-//                     <0=>  1 MHz to 20 MHz
-//                     <1=> 15 MHz to 24 MHz
-//     <e1.5>       OSCEN: Main Oscillator Enable
-//     </e>
-//   </h>
-//
-//   <h> Clock Source Select Register (CLKSRCSEL)
-//     <o2.0..1>   CLKSRC: PLL Clock Source Selection
-//                     <0=> Internal RC oscillator
-//                     <1=> Main oscillator
-//                     <2=> RTC oscillator
-//   </h>
-//
-//   <e3> PLL0 Configuration (Main PLL)
-//     <h> PLL0 Configuration Register (PLL0CFG)
-//                     <i> F_cco0 = (2 * M * F_in) / N
-//                     <i> F_in must be in the range of 32 kHz to 50 MHz
-//                     <i> F_cco0 must be in the range of 275 MHz to 550 MHz
-//       <o4.0..14>  MSEL: PLL Multiplier Selection
-//                     <6-32768><#-1>
-//                     <i> M Value
-//       <o4.16..23> NSEL: PLL Divider Selection
-//                     <1-256><#-1>
-//                     <i> N Value
-//     </h>
-//   </e>
-//
-//   <e5> PLL1 Configuration (USB PLL)
-//     <h> PLL1 Configuration Register (PLL1CFG)
-//                     <i> F_usb = M * F_osc or F_usb = F_cco1 / (2 * P)
-//                     <i> F_cco1 = F_osc * M * 2 * P
-//                     <i> F_cco1 must be in the range of 156 MHz to 320 MHz
-//       <o6.0..4>   MSEL: PLL Multiplier Selection
-//                     <1-32><#-1>
-//                     <i> M Value (for USB maximum value is 4)
-//       <o6.5..6>   PSEL: PLL Divider Selection
-//                     <0=> 1
-//                     <1=> 2
-//                     <2=> 4
-//                     <3=> 8
-//                     <i> P Value
-//     </h>
-//   </e>
-//
-//   <h> CPU Clock Configuration Register (CCLKCFG)
-//     <o7.0..7>  CCLKSEL: Divide Value for CPU Clock from PLL0
-//                     <1-256><#-1>
-//   </h>
-//
-//   <h> USB Clock Configuration Register (USBCLKCFG)
-//     <o8.0..3>   USBSEL: Divide Value for USB Clock from PLL0
-//                     <0-15>
-//                     <i> Divide is USBSEL + 1
-//   </h>
-//
-//   <h> Peripheral Clock Selection Register 0 (PCLKSEL0)
-//     <o9.0..1>    PCLK_WDT: Peripheral Clock Selection for WDT
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.2..3>    PCLK_TIMER0: Peripheral Clock Selection for TIMER0
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.4..5>    PCLK_TIMER1: Peripheral Clock Selection for TIMER1
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.6..7>    PCLK_UART0: Peripheral Clock Selection for UART0
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.8..9>    PCLK_UART1: Peripheral Clock Selection for UART1
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.12..13>  PCLK_PWM1: Peripheral Clock Selection for PWM1
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.14..15>  PCLK_I2C0: Peripheral Clock Selection for I2C0
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.16..17>  PCLK_SPI: Peripheral Clock Selection for SPI
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.20..21>  PCLK_SSP1: Peripheral Clock Selection for SSP1
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.22..23>  PCLK_DAC: Peripheral Clock Selection for DAC
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.24..25>  PCLK_ADC: Peripheral Clock Selection for ADC
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o9.26..27>  PCLK_CAN1: Peripheral Clock Selection for CAN1
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 6
-//     <o9.28..29>  PCLK_CAN2: Peripheral Clock Selection for CAN2
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 6
-//     <o9.30..31>  PCLK_ACF: Peripheral Clock Selection for ACF
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 6
-//   </h>
-//
-//   <h> Peripheral Clock Selection Register 1 (PCLKSEL1)
-//     <o10.0..1>   PCLK_QEI: Peripheral Clock Selection for the Quadrature Encoder Interface
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.2..3>   PCLK_GPIO: Peripheral Clock Selection for GPIOs
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.4..5>   PCLK_PCB: Peripheral Clock Selection for the Pin Connect Block
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.6..7>   PCLK_I2C1: Peripheral Clock Selection for I2C1
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.10..11> PCLK_SSP0: Peripheral Clock Selection for SSP0
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.12..13> PCLK_TIMER2: Peripheral Clock Selection for TIMER2
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.14..15> PCLK_TIMER3: Peripheral Clock Selection for TIMER3
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.16..17> PCLK_UART2: Peripheral Clock Selection for UART2
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.18..19> PCLK_UART3: Peripheral Clock Selection for UART3
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.20..21> PCLK_I2C2: Peripheral Clock Selection for I2C2
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.22..23> PCLK_I2S: Peripheral Clock Selection for I2S
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.26..27> PCLK_RIT: Peripheral Clock Selection for the Repetitive Interrupt Timer
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.28..29> PCLK_SYSCON: Peripheral Clock Selection for the System Control Block
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//     <o10.30..31> PCLK_MC: Peripheral Clock Selection for the Motor Control PWM
-//                     <0=> Pclk = Cclk / 4
-//                     <1=> Pclk = Cclk
-//                     <2=> Pclk = Cclk / 2
-//                     <3=> Pclk = Hclk / 8
-//   </h>
-//
-//   <h> Power Control for Peripherals Register (PCONP)
-//     <o11.1>      PCTIM0: Timer/Counter 0 power/clock enable
-//     <o11.2>      PCTIM1: Timer/Counter 1 power/clock enable
-//     <o11.3>      PCUART0: UART 0 power/clock enable
-//     <o11.4>      PCUART1: UART 1 power/clock enable
-//     <o11.6>      PCPWM1: PWM 1 power/clock enable
-//     <o11.7>      PCI2C0: I2C interface 0 power/clock enable
-//     <o11.8>      PCSPI: SPI interface power/clock enable
-//     <o11.9>      PCRTC: RTC power/clock enable
-//     <o11.10>     PCSSP1: SSP interface 1 power/clock enable
-//     <o11.12>     PCAD: A/D converter power/clock enable
-//     <o11.13>     PCCAN1: CAN controller 1 power/clock enable
-//     <o11.14>     PCCAN2: CAN controller 2 power/clock enable
-//     <o11.15>     PCGPIO: GPIOs power/clock enable
-//     <o11.16>     PCRIT: Repetitive interrupt timer power/clock enable
-//     <o11.17>     PCMC: Motor control PWM power/clock enable
-//     <o11.18>     PCQEI: Quadrature encoder interface power/clock enable
-//     <o11.19>     PCI2C1: I2C interface 1 power/clock enable
-//     <o11.21>     PCSSP0: SSP interface 0 power/clock enable
-//     <o11.22>     PCTIM2: Timer 2 power/clock enable
-//     <o11.23>     PCTIM3: Timer 3 power/clock enable
-//     <o11.24>     PCUART2: UART 2 power/clock enable
-//     <o11.25>     PCUART3: UART 3 power/clock enable
-//     <o11.26>     PCI2C2: I2C interface 2 power/clock enable
-//     <o11.27>     PCI2S: I2S interface power/clock enable
-//     <o11.29>     PCGPDMA: GP DMA function power/clock enable
-//     <o11.30>     PCENET: Ethernet block power/clock enable
-//     <o11.31>     PCUSB: USB interface power/clock enable
-//   </h>
-//
-//   <h> Clock Output Configuration Register (CLKOUTCFG)
-//     <o12.0..3>   CLKOUTSEL: Selects clock source for CLKOUT
-//                     <0=> CPU clock
-//                     <1=> Main oscillator
-//                     <2=> Internal RC oscillator
-//                     <3=> USB clock
-//                     <4=> RTC oscillator
-//     <o12.4..7>   CLKOUTDIV: Selects clock divider for CLKOUT
-//                     <1-16><#-1>
-//     <o12.8>      CLKOUT_EN: CLKOUT enable control
-//   </h>
-//
-// </e>
-*/
-#define CLOCK_SETUP           1
-#define SCS_Val               0x00000020
-#define CLKSRCSEL_Val         0x00000001
-#define PLL0_SETUP            1
-#define PLL0CFG_Val           0x00050063
-#define PLL1_SETUP            1
-#define PLL1CFG_Val           0x00000023
-#define CCLKCFG_Val           0x00000003
-#define USBCLKCFG_Val         0x00000000
-#define PCLKSEL0_Val          0x00000000
-#define PCLKSEL1_Val          0x00000000
-#define PCONP_Val             0x042887DE
-#define CLKOUTCFG_Val         0x00000000
-
-
-/*--------------------- Flash Accelerator Configuration ----------------------
-//
-// <e> Flash Accelerator Configuration
-//   <o1.12..15> FLASHTIM: Flash Access Time
-//               <0=> 1 CPU clock (for CPU clock up to 20 MHz)
-//               <1=> 2 CPU clocks (for CPU clock up to 40 MHz)
-//               <2=> 3 CPU clocks (for CPU clock up to 60 MHz)
-//               <3=> 4 CPU clocks (for CPU clock up to 80 MHz)
-//               <4=> 5 CPU clocks (for CPU clock up to 100 MHz)
-//               <5=> 6 CPU clocks (for any CPU clock)
-// </e>
-*/
-#define FLASH_SETUP           0
-#define FLASHCFG_Val          0x00004000
-
-/*
-//-------- <<< end of configuration section >>> ------------------------------
-*/
-
-/*----------------------------------------------------------------------------
-  Check the register settings
- *----------------------------------------------------------------------------*/
-#define CHECK_RANGE(val, min, max)                ((val < min) || (val > max))
-#define CHECK_RSVD(val, mask)                     (val & mask)
-
-/* Clock Configuration -------------------------------------------------------*/
-#if (CHECK_RSVD((SCS_Val),       ~0x00000030))
-   #error "SCS: Invalid values of reserved bits!"
-#endif
-
-#if (CHECK_RANGE((CLKSRCSEL_Val), 0, 2))
-   #error "CLKSRCSEL: Value out of range!"
-#endif
-
-#if (CHECK_RSVD((PLL0CFG_Val),   ~0x00FF7FFF))
-   #error "PLL0CFG: Invalid values of reserved bits!"
-#endif
-
-#if (CHECK_RSVD((PLL1CFG_Val),   ~0x0000007F))
-   #error "PLL1CFG: Invalid values of reserved bits!"
-#endif
-
-#if (PLL0_SETUP)            /* if PLL0 is used */
-  #if (CCLKCFG_Val < 2)     /* CCLKSEL must be greater then 1 */
-    #error "CCLKCFG: CCLKSEL must be greater then 1 if PLL0 is used!"
-  #endif
-#endif
-
-#if (CHECK_RANGE((CCLKCFG_Val), 2, 255))
-   #error "CCLKCFG: Value out of range!"
-#endif
-
-#if (CHECK_RSVD((USBCLKCFG_Val), ~0x0000000F))
-   #error "USBCLKCFG: Invalid values of reserved bits!"
-#endif
-
-#if (CHECK_RSVD((PCLKSEL0_Val),   0x000C0C00))
-   #error "PCLKSEL0: Invalid values of reserved bits!"
-#endif
-
-#if (CHECK_RSVD((PCLKSEL1_Val),   0x03000300))
-   #error "PCLKSEL1: Invalid values of reserved bits!"
-#endif
-
-#if (CHECK_RSVD((PCONP_Val),      0x10100821))
-   #error "PCONP: Invalid values of reserved bits!"
-#endif
-
-#if (CHECK_RSVD((CLKOUTCFG_Val), ~0x000001FF))
-   #error "CLKOUTCFG: Invalid values of reserved bits!"
-#endif
-
-/* Flash Accelerator Configuration -------------------------------------------*/
-#if (CHECK_RSVD((FLASHCFG_Val), ~0x0000F000))
-   #error "FLASHCFG: Invalid values of reserved bits!"
-#endif
-
-
-/*----------------------------------------------------------------------------
-  DEFINES
- *----------------------------------------------------------------------------*/
-    
-/*----------------------------------------------------------------------------
-  Define clocks
- *----------------------------------------------------------------------------*/
-#define XTAL        (12000000UL)        /* Oscillator frequency               */
-#define OSC_CLK     (      XTAL)        /* Main oscillator frequency          */
-#define RTC_CLK     (   32000UL)        /* RTC oscillator frequency           */
-#define IRC_OSC     ( 4000000UL)        /* Internal RC oscillator frequency   */
-
-
-/* F_cco0 = (2 * M * F_in) / N  */
-#define __M               (((PLL0CFG_Val      ) & 0x7FFF) + 1)
-#define __N               (((PLL0CFG_Val >> 16) & 0x00FF) + 1)
-#define __FCCO(__F_IN)    ((2/*ULL*/ * __M * __F_IN) / __N) 
-#define __CCLK_DIV        (((CCLKCFG_Val      ) & 0x00FF) + 1)
-
-/* Determine core clock frequency according to settings */
- #if (PLL0_SETUP)
-    #if   ((CLKSRCSEL_Val & 0x03) == 1)
-        #define __CORE_CLK (__FCCO(OSC_CLK) / __CCLK_DIV)
-    #elif ((CLKSRCSEL_Val & 0x03) == 2)
-        #define __CORE_CLK (__FCCO(RTC_CLK) / __CCLK_DIV)
-    #else 
-        #define __CORE_CLK (__FCCO(IRC_OSC) / __CCLK_DIV)
-    #endif
- #else
-    #if   ((CLKSRCSEL_Val & 0x03) == 1)
-        #define __CORE_CLK (OSC_CLK         / __CCLK_DIV)
-    #elif ((CLKSRCSEL_Val & 0x03) == 2)
-        #define __CORE_CLK (RTC_CLK         / __CCLK_DIV)
-    #else
-        #define __CORE_CLK (IRC_OSC         / __CCLK_DIV)
-    #endif
- #endif
-
-
-/*----------------------------------------------------------------------------
-  Clock Variable definitions
- *----------------------------------------------------------------------------*/
-uint32_t SystemCoreClock = __CORE_CLK;/*!< System Clock Frequency (Core Clock)*/
-
-
-/*----------------------------------------------------------------------------
-  Clock functions
- *----------------------------------------------------------------------------*/
-void SystemCoreClockUpdate (void)            /* Get Core Clock Frequency      */
-{
-  /* Determine clock frequency according to clock register values             */
-  if (((LPC_SC->PLL0STAT >> 24) & 3) == 3) { /* If PLL0 enabled and connected */
-    switch (LPC_SC->CLKSRCSEL & 0x03) {
-      case 0:                                /* Int. RC oscillator => PLL0    */
-      case 3:                                /* Reserved, default to Int. RC  */
-        SystemCoreClock = (IRC_OSC * 
-                          ((2/*ULL*/ * ((LPC_SC->PLL0STAT & 0x7FFF) + 1)))  /
-                          (((LPC_SC->PLL0STAT >> 16) & 0xFF) + 1)       /
-                          ((LPC_SC->CCLKCFG & 0xFF)+ 1));
-        break;
-      case 1:                                /* Main oscillator => PLL0       */
-        SystemCoreClock = (OSC_CLK * 
-                          ((2/*ULL*/ * ((LPC_SC->PLL0STAT & 0x7FFF) + 1)))  /
-                          (((LPC_SC->PLL0STAT >> 16) & 0xFF) + 1)       /
-                          ((LPC_SC->CCLKCFG & 0xFF)+ 1));
-        break;
-      case 2:                                /* RTC oscillator => PLL0        */
-        SystemCoreClock = (RTC_CLK * 
-                          ((2/*ULL*/ * ((LPC_SC->PLL0STAT & 0x7FFF) + 1)))  /
-                          (((LPC_SC->PLL0STAT >> 16) & 0xFF) + 1)       /
-                          ((LPC_SC->CCLKCFG & 0xFF)+ 1));
-        break;
-    }
-  } else {
-    switch (LPC_SC->CLKSRCSEL & 0x03) {
-      case 0:                                /* Int. RC oscillator => PLL0    */
-      case 3:                                /* Reserved, default to Int. RC  */
-        SystemCoreClock = IRC_OSC / ((LPC_SC->CCLKCFG & 0xFF)+ 1);
-        break;
-      case 1:                                /* Main oscillator => PLL0       */
-        SystemCoreClock = OSC_CLK / ((LPC_SC->CCLKCFG & 0xFF)+ 1);
-        break;
-      case 2:                                /* RTC oscillator => PLL0        */
-        SystemCoreClock = RTC_CLK / ((LPC_SC->CCLKCFG & 0xFF)+ 1);
-        break;
-    }
-  }
-
-}
-
-/**
- * Initialize the system
- *
- * @param  none
- * @return none
- *
- * @brief  Setup the microcontroller system.
- *         Initialize the System.
- */
-void SystemInit (void)
-{
-#if (CLOCK_SETUP)                       /* Clock Setup                        */
-  LPC_SC->SCS       = SCS_Val;
-  if (SCS_Val & (1 << 5)) {             /* If Main Oscillator is enabled      */
-    while ((LPC_SC->SCS & (1<<6)) == 0);/* Wait for Oscillator to be ready    */
-  }
-
-  LPC_SC->CCLKCFG   = CCLKCFG_Val;      /* Setup Clock Divider                */
-
-  LPC_SC->PCLKSEL0  = PCLKSEL0_Val;     /* Peripheral Clock Selection         */
-  LPC_SC->PCLKSEL1  = PCLKSEL1_Val;
-
-  LPC_SC->CLKSRCSEL = CLKSRCSEL_Val;    /* Select Clock Source for PLL0       */
-
-#if (PLL0_SETUP)
-  LPC_SC->PLL0CFG   = PLL0CFG_Val;      /* configure PLL0                     */
-  LPC_SC->PLL0FEED  = 0xAA;
-  LPC_SC->PLL0FEED  = 0x55;
-
-  LPC_SC->PLL0CON   = 0x01;             /* PLL0 Enable                        */
-  LPC_SC->PLL0FEED  = 0xAA;
-  LPC_SC->PLL0FEED  = 0x55;
-  while (!(LPC_SC->PLL0STAT & (1<<26)));/* Wait for PLOCK0                    */
-
-  LPC_SC->PLL0CON   = 0x03;             /* PLL0 Enable & Connect              */
-  LPC_SC->PLL0FEED  = 0xAA;
-  LPC_SC->PLL0FEED  = 0x55;
-  while (!(LPC_SC->PLL0STAT & ((1<<25) | (1<<24))));/* Wait for PLLC0_STAT & PLLE0_STAT */
-#endif
-
-#if (PLL1_SETUP)
-  LPC_SC->PLL1CFG   = PLL1CFG_Val;
-  LPC_SC->PLL1FEED  = 0xAA;
-  LPC_SC->PLL1FEED  = 0x55;
-
-  LPC_SC->PLL1CON   = 0x01;             /* PLL1 Enable                        */
-  LPC_SC->PLL1FEED  = 0xAA;
-  LPC_SC->PLL1FEED  = 0x55;
-  while (!(LPC_SC->PLL1STAT & (1<<10)));/* Wait for PLOCK1                    */
-
-  LPC_SC->PLL1CON   = 0x03;             /* PLL1 Enable & Connect              */
-  LPC_SC->PLL1FEED  = 0xAA;
-  LPC_SC->PLL1FEED  = 0x55;
-  while (!(LPC_SC->PLL1STAT & ((1<< 9) | (1<< 8))));/* Wait for PLLC1_STAT & PLLE1_STAT */
-#else
-  LPC_SC->USBCLKCFG = USBCLKCFG_Val;    /* Setup USB Clock Divider            */
-#endif
-
-  LPC_SC->PCONP     = PCONP_Val;        /* Power Control for Peripherals      */
-
-  LPC_SC->CLKOUTCFG = CLKOUTCFG_Val;    /* Clock Output Configuration         */
-#endif
-
-#if (FLASH_SETUP == 1)                  /* Flash Accelerator Setup            */
-  LPC_SC->FLASHCFG  = (LPC_SC->FLASHCFG & ~0x0000F000) | FLASHCFG_Val;
-#endif
-}

platforms/lpc17xx/Makefile

@@ -1,94 +0,0 @@
-ifeq ($(TARGET_NAME),)
-TARGET_NAME=boot
-endif
-ifeq ($(ATOMTHREADS),)
-ATOMTHREADS = $(shell pwd)/../../
-endif
-ifeq ($(TEST_NAME),)
-TEST_NAME = kern1
-endif
-
-CC = arm-none-eabi-gcc
-LN = arm-none-eabi-gcc
-AS = arm-none-eabi-gcc
-
-CFLAGS := $(CFLAGS) -O3 -Os -g3 -Wall -c -mcpu=cortex-m3 -mthumb
-AFLAGS := $(AFLAGS) -O3 -Os -g3 -Wall -c -fmessage-length=0 -fno-builtin -ffunction-sections -fdata-sections -mcpu=cortex-m3 -mthumb
-LFLAGS := $(LFLAGS) -O3 -Os -Wall -mcpu=cortex-m3 -mthumb -Wl,-Map=system.map  -Tsystem.ld 
-
-CDEFS := $(CDEFS) -DATOMTHREADS_TEST='"$(TEST_NAME)"' -DBOARD_MBED_LP1768
-ADEFS := $(ADEFS) -D__thumb2__ -DARM_RDI_MONITOR 
-
-LLIBS := $(LLIBS) 
-
-
-SRCS := $(SRCS) \
-		./CMSISv2p00_LPC17xx/src/core_cm3.c \
-		./CMSISv2p00_LPC17xx/src/system_LPC17xx.c \
-		./drivers/lpc17xx_uart.c \
-		startup.c \
-		modules.c \
-		$(ATOMTHREADS)/tests/$(TEST_NAME).c \
-		main.c \
-
-
-
-ASMS := $(ASMS) \
-
-
-INCLUDES := $(INCLUDES) \
-			-I$(ATOMTHREADS)/platforms/lpc17xx/CMSISv2p00_LPC17xx/inc \
-			-I$(ATOMTHREADS)/platforms/lpc17xx \
-			-I$(ATOMTHREADS)
-
-include $(ATOMTHREADS)/ports/cortex_m/Makefile
-
-OBJS = $(SRCS:.c=.o) $(ASMS:.S=.o)
-
-include 	../rules.mk
-
-run_test: clean all
-	cp boot.bin  bin/$(TEST_NAME).bin
-
-all_tests:
-	echo "Starting atomthreads test suite"
-	make run_test "TEST_NAME=mutex1"
-	make run_test "TEST_NAME=mutex2"
-	make run_test "TEST_NAME=mutex3"
-	make run_test "TEST_NAME=mutex4"
-	make run_test "TEST_NAME=mutex5"
-	make run_test "TEST_NAME=mutex6"
-	make run_test "TEST_NAME=mutex7"
-	make run_test "TEST_NAME=mutex8"
-	make run_test "TEST_NAME=mutex9"
-	make run_test "TEST_NAME=kern1"
-	make run_test "TEST_NAME=kern2"
-	make run_test "TEST_NAME=kern3"
-	make run_test "TEST_NAME=kern4"
-	make run_test "TEST_NAME=timer1"
-	make run_test "TEST_NAME=timer2"
-	make run_test "TEST_NAME=timer3"
-	make run_test "TEST_NAME=timer4"
-	make run_test "TEST_NAME=timer5"
-	make run_test "TEST_NAME=timer6"
-	make run_test "TEST_NAME=timer7"
-	make run_test "TEST_NAME=queue1"
-	make run_test "TEST_NAME=queue2"
-	make run_test "TEST_NAME=queue3"
-	make run_test "TEST_NAME=queue4"
-	make run_test "TEST_NAME=queue5"
-	make run_test "TEST_NAME=queue6"
-	make run_test "TEST_NAME=queue7"
-	make run_test "TEST_NAME=queue8"
-	make run_test "TEST_NAME=queue9"
-	make run_test "TEST_NAME=sem1"
-	make run_test "TEST_NAME=sem2"
-	make run_test "TEST_NAME=sem3"
-	make run_test "TEST_NAME=sem4"
-	make run_test "TEST_NAME=sem5"
-	make run_test "TEST_NAME=sem6"
-	make run_test "TEST_NAME=sem7"
-	make run_test "TEST_NAME=sem8"
-	make run_test "TEST_NAME=sem9"
-
-	

platforms/lpc17xx/README

@@ -1,24 +0,0 @@
----------------------------------------------------------------------------
-
-Library:      Atomthreads NXP LPC17xx Platform.
-Author:       Natie van Rooyen <natie@navaro.nl>
-License:      BSD Revised
-
----------------------------------------------------------------------------
-
-NXP LPC17xx Platform
-
-The "lpc17xx" platform contains sources for building the Atomthreads test 
-suite for the NXP LPC17xx microcontroller.
-
-The build was tested on the "mbed NXP LPC1768" board (http://www.mbed.org)
-but it should work on any LPC17xx development board where UART0 can be used 
-to monitor the output of the test. 
-
-The NXP LPC17xx microcontrollers use the ARM Cortex M3 processor core. The 
-source code in this example uses the ARM CMSIS Cortex-M Access Library V2.01 
-to initialize the platform and Newlib as the runtime library. Also it uses a 
-driver provided by NXP for the UART. The CMSIS library and the UART driver 
-are provided as source with the sample and Newlib is expected to be installed 
-together with the GNU ARM tool chain.
-

platforms/lpc17xx/drivers/lpc17xx_uart.c

@@ -1,179 +0,0 @@
-/**************************************************************************//**
- * @file     lpc17xx_uart.c
- * @brief    Drivers for UART peripheral in lpc17xx.
- * @version  1.0
- * @date     18. Nov. 2010
- *
- * @note
- * Copyright (C) 2010 NXP Semiconductors(NXP). All rights reserved.
- *
- * @par
- * Software that is described herein is for illustrative purposes only
- * which provides customers with programming information regarding the
- * products. This software is supplied "AS IS" without any warranties.
- * NXP Semiconductors assumes no responsibility or liability for the
- * use of the software, conveys no license or title under any patent,
- * copyright, or mask work right to the product. NXP Semiconductors
- * reserves the right to make changes in the software without
- * notification. NXP Semiconductors also make no representation or
- * warranty that such application will be suitable for the specified
- * use without further testing or modification.
- ******************************************************************************/
-
-#include <stdarg.h>
-#include <stdio.h>
-#include "lpc17xx_uart.h"
-#include "lpc17xx.h"
-
-
-/**
-  * @brief  Initializes the UART0.
-  *
-  * @param  baudrate: Specifies the baud rate
-  * @retval None 
-  */
-void  LPC17xx_UART_Init(uint32_t baudrate)
-{
-    uint32_t  Fdiv;
-	uint32_t  pclkdiv, pclk;
-
-	/***/
-	LPC_PINCON->PINSEL0 &= ~0x000000F0;
-
-    LPC_PINCON->PINSEL0 |= 0x00000050;       /* RxD0 and TxD0 */    
-
-	/* PCLK_UART0=CCLK/2 */
-	//**LPC_SC->PCLKSEL1 &= ~(3<<6);               /* PCLK_UART0 = CCLK/4 (18MHz) */
-    //**LPC_SC->PCLKSEL1 |=  (2<<6);               /* PCLK_UART0 = CCLK/2   (36MHz) */
-    //**pclk = SystemCoreClock/2;
-
-	/* By default, the PCLKSELx value is zero, thus, the PCLK for
-	all the peripherals is 1/4 of the SystemFrequency. */
-	/* Bit 6~7 is for UART0 */
-	pclkdiv = (LPC_SC->PCLKSEL0 >> 6) & 0x03;
-	switch ( pclkdiv )
-	{
-	  case 0x00:
-	  default:
-		pclk = SystemCoreClock/4;
-		break;
-	  case 0x01:
-		pclk = SystemCoreClock;
-		break;
-	  case 0x02:
-		pclk = SystemCoreClock/2;
-		break;
-	  case 0x03:
-		pclk = SystemCoreClock/8;
-		break;
-	}
-
-    LPC_UART0->LCR = 0x83;		/* 8 bits, no Parity, 1 Stop bit */
-	Fdiv = ( pclk / 16 ) / baudrate ;	/*baud rate */
-    LPC_UART0->DLM = Fdiv / 256;							
-    LPC_UART0->DLL = Fdiv % 256;
-    LPC_UART0->LCR = 0x03;		/* DLAB = 0 */
-    LPC_UART0->FCR = 0x07;		/* Enable and reset TX and RX FIFO. */
-}
-
-/**
-  * @brief  Write one character to UART0.
-  *
-  * @param  ch: Character to be written
-  * @retval None 
-  */
-void LPC17xx_UART_PutChar (uint8_t ch) 
-{
-	while (!(LPC_UART0->LSR & 0x20));
-    	
-	LPC_UART0->THR = ch;
-}
-
-/**
-  * @brief  Read one character from UART0 (blocking read).
-  *
-  * @param  None
-  * @retval Received character 
-  */
-uint8_t LPC17xx_UART_GetChar (void) 
-{
-	while (!(LPC_UART0->LSR & 0x01));
-	return (LPC_UART0->RBR);
-}
-
-/**
-  * @brief  Read one character from UART0 (non blocking read).
-  *
-  * @param  None
-  * @retval Received character 
-  */
-uint8_t LPC17xx_UART_GetChar_nb (void) 
-{
-	if (LPC_UART0->LSR & 0x01)
-		return (LPC_UART0->RBR);
-	else
-		return 0;
-}
-
-/**
-  * @brief  Write a string to UART0.
-  *
-  * @param  str: NULL-terminated char string to be written
-  * @retval None 
-  */
-void LPC17xx_UART_PutString (uint8_t *str) 
-{
-/* usage: LPC1700_UART_Printf("xxx\n\r");*/
-#if 1
-	while (*str != 0) 
-	{
-		LPC17xx_UART_PutChar(*str++);
-	}
-
-#else
-/* usage: LPC1700_UART_Printf("xxx\n");*/
-   while ((*str) != 0) {
-      if (*str == '\n') {
-         LPC17xx_UART_PutChar(*str++);
-         LPC17xx_UART_PutChar('\r');
-      } else {
-         LPC17xx_UART_PutChar(*str++);
-      }    
-   }
-#endif
-}
-
-/**
-  * @brief  Write a buffer to UART0.
-  *
-  * @param  buffer: buffer to be written
-  * @retval None 
-  */
-void LPC17xx_UART_WriteBuffer (uint8_t *buffer, uint32_t len)
-{
-	while (len-- != 0) {
-		LPC17xx_UART_PutChar(*buffer++);
-	}
-
-}
-/**
-  * @brief  Print formatted string. This function takes variable length arguments.
-  *
-  * @param  format
-  * @param  ...
-  * @retval None 
-  *
-  * Note: using library functions "vsprintf" will increase the RO size by about 6KB
-  */
-//void  LPC17xx_UART_Printf (const  uint8_t *format, ...)
-//{
-//    static  uint8_t  buffer[40 + 1];
-//    va_list     vArgs;
-//
-//    va_start(vArgs, format);
-//    vsprintf((char *)buffer, (char const *)format, vArgs);
-//    va_end(vArgs);
-//    LPC17xx_UART_PutString((uint8_t *) buffer);
-//}
-
-/* --------------------------------- End Of File ------------------------------ */

platforms/lpc17xx/drivers/lpc17xx_uart.h

@@ -1,37 +0,0 @@
-/**************************************************************************//**
- * @file     lpc17xx_uart.h
- * @brief    Header file for lpc17xx_uart.c.
- * @version  1.0
- * @date     18. Nov. 2010
- *
- * @note
- * Copyright (C) 2010 NXP Semiconductors(NXP). All rights reserved.
- *
- * @par
- * Software that is described herein is for illustrative purposes only
- * which provides customers with programming information regarding the
- * products. This software is supplied "AS IS" without any warranties.
- * NXP Semiconductors assumes no responsibility or liability for the
- * use of the software, conveys no license or title under any patent,
- * copyright, or mask work right to the product. NXP Semiconductors
- * reserves the right to make changes in the software without
- * notification. NXP Semiconductors also make no representation or
- * warranty that such application will be suitable for the specified
- * use without further testing or modification.
- ******************************************************************************/
-
-#ifndef __LPC17xx_UART_H_
-#define __LPC17xx_UART_H_
-
-#include <stdint.h>
-
-/* external functions */
-void    LPC17xx_UART_PutChar (uint8_t);
-uint8_t LPC17xx_UART_GetChar (void);
-void  	LPC17xx_UART_Init(uint32_t baudrate);
-void LPC17xx_UART_PutString (uint8_t *str) ;
-void LPC17xx_UART_WriteBuffer (uint8_t *buffer, uint32_t len) ;
-
-#endif // __LPC17xx_UART_H_
-
-/* --------------------------------- End Of File ------------------------------ */

platforms/lpc17xx/main.c

@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include "LPC17xx.h"
-#include "drivers/lpc17xx_uart.h"
-#include "modules.h"
-#include "atom.h"
-#include "tests/atomtests.h"
-
-
-
-#ifndef ATOMTHREADS_TEST
-#define ATOMTHREADS_TEST                "kern1"
-#endif
-
-// for mbed  board
-#define MBED_LED1_GPIO                      (1 << 18)
-#define MBED_LED2_GPIO                      (1 << 20)
-#define MBED_LED3_GPIO                      (1 << 21)
-#define MBED_LED4_GPIO                      (1 << 23)
-
-#define MBED_LED_GET(led)                   (LPC_GPIO1->FIOSET & led)
-#define MBED_LED_SET(led, on)               { if (on) LPC_GPIO1->FIOSET = led ; else LPC_GPIO1->FIOCLR = led ; }
-#define MBED_LED_TOGGLE(led)                MBED_LED_SET(led, !MBED_LED_GET(led))
-#define MBED_LED_COUNT(count)               MBED_LED_SET(MBED_LED1_GPIO, count & 1) ; MBED_LED_SET(MBED_LED2_GPIO, count & 2) ; \
-                                            MBED_LED_SET(MBED_LED3_GPIO, count & 4) ; MBED_LED_SET(MBED_LED4_GPIO, count & 8) ;
-
-
-#define TEST_STACK_BYTE_SIZE                512
-#define IDLE_STACK_BYTE_SIZE                128
-
-static unsigned char	test_stack[TEST_STACK_BYTE_SIZE] ;
-static unsigned char	idle_stack[IDLE_STACK_BYTE_SIZE] ;
-ATOM_TCB				test_tcb ;
-
-
-/**
- * \b test_thread
- *
- * Function calling the test function of the Atomthreads test suite.
- *
- */
-void
-test_thread (uint32_t param)
-{
-    uint32_t failures ;
-    CRITICAL_STORE ;
-
-    failures = test_start ()  ;
-
-    atomTimerDelay (10) ;
-    CRITICAL_START() ;
-    dbg_format_msg ("%s %s\r\n", ATOMTHREADS_TEST, failures ? "FAIL" : "PASS") ;
-    CRITICAL_END() ;
-
-	while(1) {
-#ifdef BOARD_MBED_LP1768
-        MBED_LED_TOGGLE(MBED_LED1_GPIO) ;
-#endif
-        atomTimerDelay (65) ;
-	}
-
-}
-
-/**
- * \b main
- *
- * Initialize atomthreads and start a test_thread to run the Atomthreads test suite. 
- *
- */
-int 
-main(void)
-{
-	
-#ifdef BOARD_MBED_LP1768
-    LPC_GPIO1->FIODIR |= MBED_LED1_GPIO | MBED_LED2_GPIO | MBED_LED3_GPIO | MBED_LED4_GPIO ;
-    MBED_LED_SET(MBED_LED1_GPIO | MBED_LED2_GPIO | MBED_LED3_GPIO | MBED_LED4_GPIO, 1);
-#endif
-
-    dbg_format_msg ("\r\nLPC17xx SystemCoreClock =  %d\r\n",SystemCoreClock) ;
-
-    //atomthreads_stress_test (36) ;
-
-    dbg_format_msg ("Atomthreads starting %s... \r\n", ATOMTHREADS_TEST) ;
-
-    atomOSInit(&idle_stack[0], IDLE_STACK_BYTE_SIZE, TRUE) ;
-    atomThreadCreate ((ATOM_TCB *)&test_tcb, TEST_THREAD_PRIO, test_thread, 0, 
-            &test_stack[0], TEST_STACK_BYTE_SIZE, TRUE);
-    atomOSStart() ;
-
-    while(1) ;
-
-	return 0 ;
-}
-

platforms/lpc17xx/modules.c

@@ -1,179 +0,0 @@
-/*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#include "modules.h"
-#include <stdio.h>
-#include <stdarg.h>
-#include "atomport_private.h"
-#include "atom.h"
-#include "atomport.h"
-
-
-
-/**
- * \b dbg_format_msg
- *
- * Same as printf. 
- *
- */
-void 
-dbg_format_msg (char *format, ...)
-{
-	va_list			args;
-	static char		msg[256] ;
-    //CRITICAL_STORE ;
-
-    va_start (args, format) ;
-    //CRITICAL_START() ;
-    
-	vsniprintf ((char*)msg, 256, (char*)format, args) ;
-    LPC17xx_UART_PutString (msg) ;
-    //CRITICAL_END() ;
-
-}
-
-
-/**
- * \b low_level_init
- *
- * Initializes the PIC and start the system timer tick intrerupt.
- *
- */
-int
-low_level_init (void)
-{
-    SystemInit () ;
-    SystemCoreClockUpdate ();
-    //contextInit () ;
-    NVIC_SetPriority (PendSV_IRQn, 0xFF) ;
-    LPC17xx_UART_Init (115200) ;
-    SysTick_Config (1000000) ;
-
-    return 0 ;
-}
-
-
-
-/**
- * \b __context_preempt_handler
- *
- * System timer tic interupt handler.
- *
- */
-void
-__context_tick_handler (void) 
-{
-
-    /* Call the interrupt enter routine */
-    atomIntEnter();
-
-    /* Call the OS system tick handler */
-    atomTimerTick();
-
-    /* Call the interrupt exit routine */
-    atomIntExit(TRUE);
-
-}
-
-/**
- * \b dbg_mem_dump_40
- *
- * Dumps size bytes of memory from data.
- *
- */
-void dbg_mem_dump_40 (unsigned int* data, int size)
-{
-	int j ;
-
-    dbg_format_msg ("Dump %d bytes at %.8X:\r\n",size * 4, (unsigned int)data) ; 
-    data =  (unsigned int*)((unsigned int)data & ~0x3) ;
-    for (j=0; j<size-3; j+=4) {
-	    dbg_format_msg (" :%.8X: %.8X %.8X %.8X %.8X\r\n", (unsigned int)&data[j], data[j+0], data[j+1], data[j+2], data[j+3]) ; 
-    }
-
-    if (size-j == 3) {
-	    dbg_format_msg (" :%.8X: %.8X %.8X %.8X\r\n", (unsigned int)&data[j], data[j+0], data[j+1], data[j+2]) ; 
-    } else if (size-j == 2) {
-	    dbg_format_msg (" :%.8X: %.8X %.8X\r\n", (unsigned int)&data[j], data[j+0], data[j+1]) ; 
-    } else if (size-j == 1) {
-	    dbg_format_msg (" :%.8X: %.8X\r\n", (unsigned int)&data[j], data[j+0]) ; 
-    }
-
-}
-
-/**
- * \b dbg_fault_handler
- *
- * Prints cortex m exception debug information.
- *
- */
-void
-dbg_fault_handler (unsigned int * hardfault_args)
-{
-  unsigned int stacked_r0;
-  unsigned int stacked_r1;
-  unsigned int stacked_r2;
-  unsigned int stacked_r3;
-  unsigned int stacked_r12;
-  unsigned int stacked_lr;
-  unsigned int stacked_pc;
-  unsigned int stacked_psr;
- 
-  stacked_r0 = ((unsigned long) hardfault_args[0]);
-  stacked_r1 = ((unsigned long) hardfault_args[1]);
-  stacked_r2 = ((unsigned long) hardfault_args[2]);
-  stacked_r3 = ((unsigned long) hardfault_args[3]);
- 
-  stacked_r12 = ((unsigned long) hardfault_args[4]);
-  stacked_lr = ((unsigned long) hardfault_args[5]);
-  stacked_pc = ((unsigned long) hardfault_args[6]);
-  stacked_psr = ((unsigned long) hardfault_args[7]);
- 
-  dbg_format_msg ("\r\n\r\n[Hard fault handler - all numbers in hex]\r\n");
-  dbg_format_msg ("SP = 0x%x\r\n", hardfault_args);
-  dbg_format_msg ("R0 = 0x%x\r\n", stacked_r0);
-  dbg_format_msg ("R1 = 0x%x\r\n", stacked_r1);
-  dbg_format_msg ("R2 = 0x%x\r\n", stacked_r2);
-  dbg_format_msg ("R3 = 0x%x\r\n", stacked_r3);
-  dbg_format_msg ("R12 = 0x%x\r\n", stacked_r12);
-  dbg_format_msg ("LR [R14] = 0x%x  subroutine call return address\r\n", stacked_lr);
-  dbg_format_msg ("PC [R15] = 0x%x  program counter\r\n", stacked_pc);
-  dbg_format_msg ("PSR = 0x%x\r\n", stacked_psr);
-  //printf ("BFAR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED38))));
-  //printf ("CFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED28))));
-  //printf ("HFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED2C))));
-  //printf ("DFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED30))));
-  //printf ("AFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED3C))));
-  // printf ("SCB_SHCSR = %x\n", SCB->SHCSR);
-  
-  dbg_mem_dump_40 (hardfault_args, 0x40) ;
-
-  while (1);
-
-}
-

platforms/lpc17xx/startup.c

@@ -1,297 +0,0 @@
-/**************************************************************************//**
- * @file     startup.c
- * @brief    
- * @version  
- * @date     
- *
- * @note
- * Copyright (C) 2010 NXP Semiconductors(NXP). All rights reserved.
- *
- * @par
- * Software that is described herein is for illustrative purposes only
- * which provides customers with programming information regarding the
- * products. This software is supplied "AS IS" without any warranties.
- * NXP Semiconductors assumes no responsibility or liability for the
- * use of the software, conveys no license or title under any patent,
- * copyright, or mask work right to the product. NXP Semiconductors
- * reserves the right to make changes in the software without
- * notification. NXP Semiconductors also make no representation or
- * warranty that such application will be suitable for the specified
- * use without further testing or modification.
- ******************************************************************************/
-#define WEAK __attribute__ ((weak))
-#define ALIAS(f) __attribute__ ((weak, alias (#f)))
-
-
-#include "system_LPC17xx.h"
-#include "atomport_private.h"
-
-
-
-
-     void ResetISR(void);
-WEAK void NMI_Handler(void);
-WEAK void HardFault_Handler(void);
-WEAK void MemManage_Handler(void);
-WEAK void BusFault_Handler(void);
-WEAK void UsageFault_Handler(void);
-WEAK void SVC_Handler(void);
-WEAK void DebugMon_Handler(void);
-WEAK void PendSV_Handler(void);
-WEAK void SysTick_Handler(void);
-WEAK void IntDefault_Handler(void);
-
-
-//*****************************************************************************
-//
-// The entry point for the application.
-// __main() is the entry point for Redlib based applications
-// main() is the entry point for Newlib based applications
-//
-//*****************************************************************************
-
-extern int main(void);
-extern void low_level_init(void);
-
-//*****************************************************************************
-//
-// External declaration for the pointer to the stack top from the Linker Script
-//
-//*****************************************************************************
-extern void _vStackTop(void);
-
-
-//*****************************************************************************
-//
-// The vector table.
-// This relies on the linker script to place at correct location in memory.
-//
-//*****************************************************************************
-extern void (* const g_pfnVectors[])(void);
-__attribute__ ((section(".isr_vector")))
-void (* const g_pfnVectors[])(void) = {
-	// Core Level - CM3
-	&_vStackTop, // The initial stack pointer
-	ResetISR,								// The reset handler
-	NMI_Handler,							// The NMI handler
-	HardFault_Handler,						// The hard fault handler
-	MemManage_Handler,						// The MPU fault handler
-	BusFault_Handler,						// The bus fault handler
-	UsageFault_Handler,						// The usage fault handler
-	0,										// Reserved
-	0,										// Reserved
-	0,										// Reserved
-	0,										// Reserved
-	SVC_Handler,							// SVCall handler
-	DebugMon_Handler,						// Debug monitor handler
-	0,										// Reserved
-	archPendSVHandler,						// The PendSV handler
-	archTickHandler /*SysTick_Handler*/,						// The SysTick handler
-
-	// Chip Level - LPC17
-	IntDefault_Handler,					// 16, 0x40 - WDT
-	IntDefault_Handler,					// 17, 0x44 - TIMER0
-	IntDefault_Handler,					// 18, 0x48 - TIMER1
-	IntDefault_Handler,					// 19, 0x4c - TIMER2
-	IntDefault_Handler,					// 20, 0x50 - TIMER3
-	IntDefault_Handler,					// 21, 0x54 - UART0
-	IntDefault_Handler,					// 22, 0x58 - UART1
-	IntDefault_Handler,					// 23, 0x5c - UART2
-	IntDefault_Handler,					// 24, 0x60 - UART3
-	IntDefault_Handler,					// 25, 0x64 - PWM1
-	IntDefault_Handler,					// 26, 0x68 - I2C0
-	IntDefault_Handler,					// 27, 0x6c - I2C1
-	IntDefault_Handler,					// 28, 0x70 - I2C2
-	IntDefault_Handler,					// 29, 0x74 - SPI
-	IntDefault_Handler,					// 30, 0x78 - SSP0
-	IntDefault_Handler,					// 31, 0x7c - SSP1
-	IntDefault_Handler,					// 32, 0x80 - PLL0 (Main PLL)
-	IntDefault_Handler,					// 33, 0x84 - RTC
-	IntDefault_Handler,					// 34, 0x88 - EINT0
-	IntDefault_Handler,					// 35, 0x8c - EINT1
-	IntDefault_Handler,					// 36, 0x90 - EINT2
-	IntDefault_Handler,					// 37, 0x94 - EINT3
-	IntDefault_Handler,					// 38, 0x98 - ADC
-	IntDefault_Handler,					// 39, 0x9c - BOD
-	IntDefault_Handler,					// 40, 0xA0 - USB
-	IntDefault_Handler,					// 41, 0xa4 - CAN
-	IntDefault_Handler,					// 42, 0xa8 - GP DMA
-	IntDefault_Handler,					// 43, 0xac - I2S
-	IntDefault_Handler,					// 44, 0xb0 - Ethernet
-	IntDefault_Handler,					// 45, 0xb4 - RITINT
-	IntDefault_Handler,					// 46, 0xb8 - Motor Control PWM
-	IntDefault_Handler,					// 47, 0xbc - Quadrature Encoder
-	IntDefault_Handler,					// 48, 0xc0 - PLL1 (USB PLL)
-	IntDefault_Handler,					// 49, 0xc4 - USB Activity interrupt to wakeup
-	IntDefault_Handler, 				// 50, 0xc8 - CAN Activity interrupt to wakeup
-};
-
-//*****************************************************************************
-// Functions to carry out the initialization of RW and BSS data sections. These
-// are written as separate functions rather than being inlined within the
-// ResetISR() function in order to cope with MCUs with multiple banks of
-// memory.
-//*****************************************************************************
-__attribute__ ((section(".after_vectors")))
-void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
-	unsigned int *pulDest = (unsigned int*) start;
-	unsigned int *pulSrc = (unsigned int*) romstart;
-	unsigned int loop;
-	for (loop = 0; loop < len; loop = loop + 4)
-		*pulDest++ = *pulSrc++;
-}
-
-__attribute__ ((section(".after_vectors")))
-void bss_init(unsigned int start, unsigned int len) {
-	unsigned int *pulDest = (unsigned int*) start;
-	unsigned int loop;
-	for (loop = 0; loop < len; loop = loop + 4)
-		*pulDest++ = 0;
-}
-
-
-//*****************************************************************************
-// The following symbols are constructs generated by the linker, indicating
-// the location of various points in the "Global Section Table". This table is
-// created by the linker via the Code Red managed linker script mechanism. It
-// contains the load address, execution address and length of each RW data
-// section and the execution and length of each BSS (zero initialized) section.
-//*****************************************************************************
-extern unsigned int __data_section_table;
-extern unsigned int __data_section_table_end;
-extern unsigned int __bss_section_table;
-extern unsigned int __bss_section_table_end;
-
-
-//*****************************************************************************
-// Reset entry point for your code.
-// Sets up a simple runtime environment and initializes the C/C++
-// library.
-//*****************************************************************************
-__attribute__ ((section(".after_vectors")))
-void
-ResetISR(void) {
-
-    //
-    // Copy the data sections from flash to SRAM.
-    //
-	unsigned int LoadAddr, ExeAddr, SectionLen;
-	unsigned int *SectionTableAddr;
-
-	// Load base address of Global Section Table
-	SectionTableAddr = &__data_section_table;
-
-    // Copy the data sections from flash to SRAM.
-	while (SectionTableAddr < &__data_section_table_end) {
-		LoadAddr = *SectionTableAddr++;
-		ExeAddr = *SectionTableAddr++;
-		SectionLen = *SectionTableAddr++;
-		data_init(LoadAddr, ExeAddr, SectionLen);
-	}
-	// At this point, SectionTableAddr = &__bss_section_table;
-	// Zero fill the bss segment
-	while (SectionTableAddr < &__bss_section_table_end) {
-		ExeAddr = *SectionTableAddr++;
-		SectionLen = *SectionTableAddr++;
-		bss_init(ExeAddr, SectionLen);
-	}
-
-
-
-	low_level_init();
-
-
-
-
-	main();
-
-
-	//
-	// main() shouldn't return, but if it does, we'll just enter an infinite loop
-	//
-	while (1) ;	
-}
-
-//*****************************************************************************
-// Default exception handlers. Override the ones here by defining your own
-// handler routines in your application code.
-//*****************************************************************************
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void NMI_Handler(void)
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void HardFault_Handler(void)
-{
-
-    __asm volatile
-    (
-        " tst lr, #4                    \n"
-        " ite eq                        \n"
-        " mrseq r0, msp                 \n"
-        " mrsne r0, psp                 \n"
-        " b dbg_fault_handler    \n"
-    );
-
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void MemManage_Handler(void)  
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void BusFault_Handler(void)  
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void UsageFault_Handler(void)
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void SVC_Handler(void)
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void DebugMon_Handler(void)
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void PendSV_Handler(void)
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void SysTick_Handler(void)
-{
-    while(1) ;
-
-}
-
-__attribute__ ((section(".after_vectors")))  __attribute__( ( naked ) )
-void IntDefault_Handler(void)
-{
-    while(1) ;
-
-}

platforms/lpc17xx/system.ld

@@ -1,148 +0,0 @@
-/**************************************************************************//**
- * @file     system.ld
- * @brief    
- * @version  
- * @date     
- *
- * @note
- * Copyright (C) 2010 NXP Semiconductors(NXP). All rights reserved.
- *
- * @par
- * Software that is described herein is for illustrative purposes only
- * which provides customers with programming information regarding the
- * products. This software is supplied "AS IS" without any warranties.
- * NXP Semiconductors assumes no responsibility or liability for the
- * use of the software, conveys no license or title under any patent,
- * copyright, or mask work right to the product. NXP Semiconductors
- * reserves the right to make changes in the software without
- * notification. NXP Semiconductors also make no representation or
- * warranty that such application will be suitable for the specified
- * use without further testing or modification.
- ******************************************************************************/
-
-MEMORY
-{
-  /* Define each memory region */
-  MFlash512 (rx) : ORIGIN = 0x0, LENGTH = 0x80000 /* 512k */
-  RamLoc32 (rwx) : ORIGIN = 0x10000000, LENGTH = 0x8000 /* 32k */
-  RamAHB32 (rwx) : ORIGIN = 0x2007c000, LENGTH = 0x8000 /* 32k */
-
-}
-  /* Define a symbol for the top of each memory region */
-  __top_MFlash512 = 0x0 + 0x80000;
-  __top_RamLoc32 = 0x10000000 + 0x8000;
-  __top_RamAHB32 = 0x2007c000 + 0x8000;
-
-
-
-ENTRY(ResetISR)
-
-SECTIONS
-{
-
-	/* MAIN TEXT SECTION */	
-	.text : ALIGN(4)
-	{
-		FILL(0xff)
-		KEEP(*(.isr_vector))
-		
-		/* Global Section Table */
-		. = ALIGN(4) ;
-		__section_table_start = .;
-		__data_section_table = .;
-		LONG(LOADADDR(.data));
-		LONG(    ADDR(.data)) ;
-		LONG(  SIZEOF(.data));
-		LONG(LOADADDR(.data_RAM2));
-		LONG(    ADDR(.data_RAM2)) ;
-		LONG(  SIZEOF(.data_RAM2));
-		__data_section_table_end = .;
-		__bss_section_table = .;
-		LONG(    ADDR(.bss));
-		LONG(  SIZEOF(.bss));
-		LONG(    ADDR(.bss_RAM2));
-		LONG(  SIZEOF(.bss_RAM2));
-		__bss_section_table_end = .;
-		__section_table_end = . ;
-		/* End of Global Section Table */
-		
-
-		*(.after_vectors*)
-		
-		*(.text*)
-		*(.rodata .rodata.*)
-		. = ALIGN(4);
-		
-	} > MFlash512
-
-	/*
-	 * for exception handling/unwind - some Newlib functions (in common
-	 * with C++ and STDC++) use this. 
-	 * Use KEEP so not discarded with --gc-sections
-	 */
-	.ARM.extab : ALIGN(4)
-	{
-		KEEP(*(.ARM.extab* .gnu.linkonce.armextab.*))
-	} > MFlash512
-	__exidx_start = .;
-	
-	.ARM.exidx : ALIGN(4)
-	{
-		KEEP(*(.ARM.exidx* .gnu.linkonce.armexidx.*))
-	} > MFlash512
-	__exidx_end = .;
-	
-	_etext = .;
-		
-	
-	.data_RAM2 : ALIGN(4)
-	{
-	   FILL(0xff)
-		*(.data.$RAM2*)
-		*(.data.$RamAHB32*)
-	   . = ALIGN(4) ;
-	} > RamAHB32 AT>MFlash512
-	
-	/* MAIN DATA SECTION */
-
-	.uninit_RESERVED : ALIGN(4)
-	{
-		KEEP(*(.bss.$RESERVED*))
-		. = ALIGN(4) ;
-		_end_uninit_RESERVED = .;
-	} > RamLoc32
-
-	.data : ALIGN(4)
-	{
-		FILL(0xff)
-		_data = .;
-		*(vtable)
-		*(.data*)
-		. = ALIGN(4) ;
-		_edata = .;
-	} > RamLoc32 AT>MFlash512
-
-	
-	.bss_RAM2 : ALIGN(4)
-	{
-		*(.bss.$RAM2*)
-		*(.bss.$RamAHB32*)
-	   . = ALIGN(4) ;
-	} > RamAHB32
-
-	/* MAIN BSS SECTION */
-	.bss : ALIGN(4)
-	{
-		__bss_start__ = . ;
-		_bss = .;
-		*(.bss*)
-		*(COMMON)
-		. = ALIGN(4) ;
-		__bss_end__ = . ;
-		_ebss = .;
-		PROVIDE(end = .);
-	} > RamLoc32
-	
-	PROVIDE(_pvHeapStart = .);
-	PROVIDE(_vStackTop = __top_RamLoc32 - 0);
-}

platforms/qemu_lm3s/Makefile

@@ -1,96 +0,0 @@
-ifeq ($(TARGET_NAME),)
-TARGET_NAME=boot
-endif
-ifeq ($(ATOMTHREADS),)
-ATOMTHREADS = $(shell pwd)/../../
-endif
-ifeq ($(TEST_NAME),)
-TEST_NAME = kern1
-endif
-
-
-
-CC = arm-none-eabi-gcc
-LN = arm-none-eabi-gcc
-AS = arm-none-eabi-gcc
-
-CFLAGS := $(CFLAGS) -Wall -g -c -mcpu=cortex-m3 -mthumb -mthumb-interwork -ffreestanding 
-AFLAGS := $(AFLAGS) -Wall -g -c -mcpu=cortex-m3 -mthumb -mthumb-interwork -ffreestanding 
-LFLAGS := $(LFLAGS) -Wall -mcpu=cortex-m3 -mthumb -Wl,-Map=system.map  -Tsystem.ld 
-
-CDEFS := $(CDEFS) -DATOMTHREADS_TEST='"$(TEST_NAME)"' -DPLATFORM_QEMU_LM3S_HACK
-ADEFS := $(ADEFS) -D__thumb2__ -DARM_RDI_MONITOR -DPLATFORM_QEMU_LM3S_HACK
-
-LLIBS := $(LLIBS) 
-
-
-SRCS := $(SRCS) \
-		modules.c \
-		main.c \
-		$(ATOMTHREADS)/tests/$(TEST_NAME).c \
-
-
-ASMS := $(ASMS) \
-		startup.S \
-
-INCLUDES := $(INCLUDES) \
-			-I$(ATOMTHREADS)
-
-include $(ATOMTHREADS)/ports/cortex_m/Makefile
-
-OBJS = $(SRCS:.c=.o) $(ASMS:.S=.o)
-
-include 	../rules.mk
-
-
-run_test: clean all
-	echo "START TEST $(TEST_NAME)"
-	qemu-system-arm -M lm3s6965evb -kernel boot.elf  -semihosting >> atomthreads_test.out
-
-all_tests:
-	echo "Starting atomthreads test suite" > atomthreads_test.out
-	make run_test "TEST_NAME=mutex1"
-	make run_test "TEST_NAME=mutex2"
-	make run_test "TEST_NAME=mutex3"
-	make run_test "TEST_NAME=mutex5"
-	make run_test "TEST_NAME=mutex6"
-	make run_test "TEST_NAME=mutex7"
-	make run_test "TEST_NAME=mutex8"
-	make run_test "TEST_NAME=mutex9"
-	make run_test "TEST_NAME=kern1"
-	make run_test "TEST_NAME=kern2"
-	make run_test "TEST_NAME=kern3"
-	make run_test "TEST_NAME=kern4"
-	make run_test "TEST_NAME=timer1"
-	make run_test "TEST_NAME=timer2"
-	make run_test "TEST_NAME=timer3"
-	make run_test "TEST_NAME=timer5"
-	make run_test "TEST_NAME=timer6"
-	make run_test "TEST_NAME=timer7"
-	make run_test "TEST_NAME=queue1"
-	make run_test "TEST_NAME=queue2"
-	make run_test "TEST_NAME=queue3"
-	make run_test "TEST_NAME=queue4"
-	make run_test "TEST_NAME=queue5"
-	make run_test "TEST_NAME=queue6"
-	make run_test "TEST_NAME=queue7"
-	make run_test "TEST_NAME=queue8"
-	make run_test "TEST_NAME=queue9"
-	make run_test "TEST_NAME=sem1"
-	make run_test "TEST_NAME=sem2"
-	make run_test "TEST_NAME=sem3"
-	make run_test "TEST_NAME=sem5"
-	make run_test "TEST_NAME=sem6"
-	make run_test "TEST_NAME=sem7"
-	make run_test "TEST_NAME=sem8"
-	make run_test "TEST_NAME=sem9"
-
-fail_tests:
-		make run_test "TEST_NAME=mutex4"
-		make run_test "TEST_NAME=timer4"
-		make run_test "TEST_NAME=sem4"
-
-
-run_last:
-	qemu-system-arm -M lm3s6965evb -kernel boot.elf  -semihosting
-

platforms/qemu_lm3s/README

@@ -1,37 +0,0 @@
----------------------------------------------------------------------------
-
-Library:      Atomthreads QEMU Stellaris LM3S6965 Platform.
-Author:       Natie van Rooyen <natie@navaro.nl>
-License:      BSD Revised
-
----------------------------------------------------------------------------
-
-QEMU Stellaris LM3S6965 Platform
-
-The "qemu_lm3s" platform contains sources for building a sample Atomthreads 
-application for the Stellaris LM3S6965 platform.
-
-
-ISSUES:
-
-There seems to be several problems for the QEMU Cortex M3 processor. The 
-platform and port contains specific hacks to make it work on the QEMU 1.2.0 
-release it was tested on. Also see the latest patches for QEMU.
-
-Fixes implemented for the QEMU 1.2.0 release:
-
-1.  Install the patch http://patchwork.ozlabs.org/patch/180315/ 
-2.  Use the PLATFORM_QEMU_LM3S_HACK define in the Makefile:
-
-       - Disabling interrupts on the processor does not work (verified).
-       - Disabling interrupts of the Cortex M Sys Tick Interrupt does not 
-         work (verified).
-       - NVIC Interrupt priorities not implemented correctly (not verified).
-
-Because of the problems with the Sys Tick Interrupt the The Stellaris 
-General-Purpose Timer Module (GPTM) was used to generate the system timer 
-tick.
-
-BUGS:
-mutex4 testcase fails.
-sem4 testcase fails.

platforms/qemu_lm3s/modules.c

@@ -1,164 +0,0 @@
-/*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#include "modules.h"
-#include <stdio.h>
-#include <stdarg.h>
-#include "atomport_private.h"
-#include "atom.h"
-#include "atomport.h"
-#include "types.h"
-
-SYSTICK_T*                const           board_systick        = (SYSTICK_T*)            BOARD_BASE_ADDRESS_SYSTICK ;
-NVIC_T*                   const           board_nvic           = (NVIC_T*)               BOARD_BASE_ADDRESS_NVIC ;
-SCB_T *                   const           board_scb            = (SCB_T*)                BOARD_BASE_ADDRESS_SCB ;
-GPTM_TIMER_T *            const           board_gptm0          = (GPTM_TIMER_T*)         BOARD_BASE_ADDRESS_GPTIMER0 ;
-
-
-/**
- * \b dbg_format_msg
- *
- * Same as printf. 
- *
- */
-void 
-dbg_format_msg (char *format, ...)
-{
-    va_list			args;
-    static char		msg[256] ;
-    CRITICAL_STORE ;
-
-    va_start (args, format) ;
-    CRITICAL_START() ;
-    vsnprintf ((char*)msg, 256, (char*)format, args) ;
-    printf (msg) ;
-    CRITICAL_END() ;
-
-}
-
-
-/**
- * \b low_level_init
- *
- * Initializes the PIC and start the system timer tick intrerupt.
- *
- */
-int
-low_level_init (void)
-{
-    contextInit () ;
-
-    //board_systick->STRELOAD = 0x010000 ;
-    //board_systick->STCTRL = NVIC_STCTRL_CLK | 
-    //                    NVIC_STCTRL_INTEN |
-    //                    NVIC_STCTRL_ENABLE ;
-
-    board_gptm0->CTL &= ~GPTM_TIMER_CTL_TAEN ;
-    board_gptm0->CFG = 0 ;
-    board_gptm0->TAMR = GPTM_TIMER_TMR_TMR_PERIODIC ;
-    board_gptm0->TAILR = 0x10000 ;
-    board_gptm0->IMR |= GPTM_TIMER_INT_TATOIM ;
-    board_gptm0->CTL |= GPTM_TIMER_CTL_TAEN ;
-
-    // board_nvic->ISER[0] = 0x80000 ;
-
-    return 0 ;
-}
-
-
-/**
- * \b __context_tick_handler
- *
- * System timer tic interupt handler.
- *
- */
-void
-__context_tick_handler (void) 
-{
-
-    atomIntEnter();
-
-    /* Call the OS system tick handler */
-    atomTimerTick();
-
-    board_gptm0->ICR |= GPTM_TIMER_INT_TATOIM ;
-
-    /* Call the interrupt exit routine */
-    atomIntExit(TRUE);
-
-}
-
-/**
- * \b dbg_hard_fault_handler_c
- *
- * Dumps the registers pushed on the stack after a fault.
- *
- */
-void
-dbg_hard_fault_handler_c (unsigned int * hardfault_args)
-{
-    unsigned int stacked_r0;
-    unsigned int stacked_r1;
-    unsigned int stacked_r2;
-    unsigned int stacked_r3;
-    unsigned int stacked_r12;
-    unsigned int stacked_lr;
-    unsigned int stacked_pc;
-    unsigned int stacked_psr;
-    
-    stacked_r0 = ((unsigned long) hardfault_args[0]);
-    stacked_r1 = ((unsigned long) hardfault_args[1]);
-    stacked_r2 = ((unsigned long) hardfault_args[2]);
-    stacked_r3 = ((unsigned long) hardfault_args[3]);
-    
-    stacked_r12 = ((unsigned long) hardfault_args[4]);
-    stacked_lr = ((unsigned long) hardfault_args[5]);
-    stacked_pc = ((unsigned long) hardfault_args[6]);
-    stacked_psr = ((unsigned long) hardfault_args[7]);
-    
-    printf ("\r\n\r\n[Hard fault handler - all numbers in hex]\r\n");
-    printf ("SP = 0x%x\r\n", hardfault_args);
-    printf ("R0 = 0x%x\r\n", stacked_r0);
-    printf ("R1 = 0x%x\r\n", stacked_r1);
-    printf ("R2 = 0x%x\r\n", stacked_r2);
-    printf ("R3 = 0x%x\r\n", stacked_r3);
-    printf ("R12 = 0x%x\r\n", stacked_r12);
-    printf ("LR [R14] = 0x%x  subroutine call return address\r\n", stacked_lr);
-    printf ("PC [R15] = 0x%x  program counter\r\n", stacked_pc);
-    printf ("PSR = 0x%x\r\n", stacked_psr);
-    //printf ("BFAR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED38))));
-    //printf ("CFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED28))));
-    //printf ("HFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED2C))));
-    //printf ("DFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED30))));
-    //printf ("AFSR = 0x%x\r\n", (*((volatile unsigned long *)(0xE000ED3C))));
-    // printf ("SCB_SHCSR = %x\n", SCB->SHCSR);
- 
-  while (1);
-
-}
-

platforms/qemu_lm3s/modules.h

@@ -1,208 +0,0 @@
-/*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef __MODULES_H__
-#define __MODULES_H__
-
-/*
- *  Module definitions to use with the Stellaris LM3S6965 Microcontroller
- */
-
-#include "atomport.h"
-
-
-// *****************************************************************************
-// The Stellaris General-Purpose Timer Module (GPTM)
-// *****************************************************************************
-typedef struct GPTM_TIMER_S {
-
-                                                    // offset  read/write       reset           Description
-        __IO uint32_t       CFG       ;         // 0x000   R/W              0x00000000     GPTM Configuration 345
-        __IO uint32_t       TAMR      ;         // 0x004   R/W              0x00000000     GPTM TimerA Mode 346
-        __IO uint32_t       TBMR      ;         // 0x008   R/W              0x00000000     GPTM TimerB Mode 348
-        __IO uint32_t       CTL       ;         // 0x00C   R/W              0x00000000     GPTM Control 350
-             uint32_t       Reserved[2] ;       // 0x010
-        __IO uint32_t       IMR       ;         // 0x018   R/W              0x00000000     GPTM Interrupt Mask 353
-        __I  uint32_t       RIS       ;         // 0x01C   RO               0x00000000     GPTM Raw Interrupt Status 355
-        __I  uint32_t       MIS       ;         // 0x020   RO               0x00000000     GPTM Masked Interrupt Status 356
-        __O  uint32_t       ICR       ;         // 0x024   W1C              0x00000000     GPTM Interrupt Clear 357
-        __IO uint32_t       TAILR     ;         // 0x028   R/W              0xFFFFFFFF     GPTM TimerA Interval Load 359
-        __IO uint32_t       TBILR     ;         // 0x02C   R/W              0x0000FFFF     GPTM TimerB Interval Load 360
-        __IO uint32_t       TAMATCHR  ;         // 0x030   R/W              0xFFFFFFFF     GPTM TimerA Match 361
-        __IO uint32_t       TBMATCHR  ;         // 0x034   R/W              0x0000FFFF     GPTM TimerB Match 362
-        __IO uint32_t       TAPR      ;         // 0x038   R/W              0x00000000     GPTM TimerA Prescale 363
-        __IO uint32_t       TBPR      ;         // 0x03C   R/W              0x00000000     GPTM TimerB Prescale 364
-        __IO uint32_t       TAPMR     ;         // 0x040   R/W              0x00000000     GPTM TimerA Prescale Match 365
-        __IO uint32_t       TBPMR     ;         // 0x044   R/W              0x00000000     GPTM TimerB Prescale Match 366
-        __I  uint32_t       TAR       ;         // 0x048   RO               0xFFFFFFFF     GPTM TimerA 367
-        __I  uint32_t       TBR       ;         // 0x04C   RO               0x0000FFFF     GPTM TimerB 368
-
-} GPTM_TIMER_T, *PGPTM_TIMER_T ;
-
-// -------- GPTM_TIMER_CFG : (CFG Offset: 0x00) This register configures the global operation of the GPTM module -------- 
-#define GPTM_TIMER_CFG_MASK                 ((unsigned int)0x07 << 0)		// 
-    #define GPTM_TIMER_CFG_32BIT            ((unsigned int)0x00 << 0)		// 32-bit timer configuration
-    #define GPTM_TIMER_CFG_32BIT_RT         ((unsigned int)0x01 << 0)		// 32-bit real-time clock (RTC) counter configuration
-// -------- GPTM_TIMER_TAMR : (TAMR Offset: 0x04) This register configures the GPTM based on the configuration selected in the GPTMCFG register -------- 
-// -------- GPTM_TIMER_TBMR : (TBMR Offset: 0x08) This register configures the GPTM based on the configuration selected in the GPTMCFG register -------- 
-#define GPTM_TIMER_TMR_TAMS                 ((unsigned int)0x01 << 3)		// GPTM TimerA Alternate Mode Select. 0 Capture mode is enabled. 1 PWM mode is enabled
-#define GPTM_TIMER_TMR_TCMR                 ((unsigned int)0x01 << 2)		// GPTM TimerA Capture Mode. 0 Edge-Count mode. 1 Edge-Time mode.
-#define GPTM_TIMER_TMR_TMR_ONE_SHOT         ((unsigned int)0x01 << 0)		// One-Shot Timer mode
-#define GPTM_TIMER_TMR_TMR_PERIODIC         ((unsigned int)0x02 << 0)		// Periodic Timer mode
-#define GPTM_TIMER_TMR_TMR_CAPTURE          ((unsigned int)0x03 << 0)		// Capture mode
-// -------- GPTM_TIMER_CTL : (CTL Offset: 0x0C) This register is used alongside the GPTMCFG and GMTMTnMR registers to fine-tune the timer configuration -------- 
-#define GPTM_TIMER_CTL_TBPWML               ((unsigned int)0x01 << 14)		// GPTM TimerB PWM Output Level. 0 Output is unaffected. 1 Output is inverted.
-#define GPTM_TIMER_CTL_TBOTE                ((unsigned int)0x01 << 13)		// GPTM TimerB Output Trigger Enable. 0 The output TimerB ADC trigger is disabled. 1 The output TimerB ADC trigger is enabled.
-#define GPTM_TIMER_CTL_TBEVENT_MASK         ((unsigned int)0x03 << 10)		// GPTM TimerB Event Mode
-    #define GPTM_TIMER_CTL_TBEVENT_PE       ((unsigned int)0x00 << 10)		// Positive edge
-    #define GPTM_TIMER_CTL_TBEVENT_NE       ((unsigned int)0x01 << 10)		// Negative edge
-    #define GPTM_TIMER_CTL_TBEVENT          ((unsigned int)0x03 << 10)		// Both edges
-#define GPTM_TIMER_CTL_TBSTALL              ((unsigned int)0x01 << 9)		// GPTM Timer B Stall Enable. 0 Timer B continues counting while the processor is halted by the debugger
-#define GPTM_TIMER_CTL_TBEN                 ((unsigned int)0x01 << 8)		// GPTM TimerB Enable
-// --------
-#define GPTM_TIMER_CTL_TAPWML               ((unsigned int)0x01 << 6)		// GPTM TimerA PWM Output Level. 0 Output is unaffected. 1 Output is inverted.
-#define GPTM_TIMER_CTL_TAOTE                ((unsigned int)0x01 << 5)		// GPTM TimerA Output Trigger Enable. 0 The output TimerB ADC trigger is disabled. 1 The output TimerB ADC trigger is enabled.
-#define GPTM_TIMER_CTL_RTCEN                ((unsigned int)0x01 << 4)		// GPTM RTC Enable
-#define GPTM_TIMER_CTL_TAEVENT_MASK         ((unsigned int)0x03 << 2)		// GPTM TimerA Event Mode
-    #define GPTM_TIMER_CTL_TAEVENT_PE       ((unsigned int)0x00 << 2)		// Positive edge
-    #define GPTM_TIMER_CTL_TAEVENT_NE       ((unsigned int)0x01 << 2)		// Negative edge
-    #define GPTM_TIMER_CTL_TAEVENT          ((unsigned int)0x03 << 2)		// Both edges
-#define GPTM_TIMER_CTL_TASTALL              ((unsigned int)0x01 << 1)		// GPTM Timer A Stall Enable. 0 Timer B continues counting while the processor is halted by the debugger
-#define GPTM_TIMER_CTL_TAEN                 ((unsigned int)0x01 << 0)		// GPTM TimerA Enable
-// -------- GPTM_TIMER_IMR : (IMR Offset: 0x18) This register allows software to enable/disable GPTM controller-level interrupts. -------- 
-// -------- GPTM_TIMER_RIS : (RIS Offset: 0x1C) This register shows the state of the GPTM's internal interrupt signal. -------- 
-// -------- GPTM_TIMER_MIS : (MIS Offset: 0x20) This register show the state of the GPTM's controller-level interrupt. -------- 
-// -------- GPTM_TIMER_ICR : (ICR Offset: 0x24) This register is used to clear the status bits in the GPTMRIS and GPTMMIS registers. -------- 
-#define GPTM_TIMER_INT_CBEIM                ((unsigned int)0x01 << 10)		// GPTM CaptureB Event Interrupt Mask
-#define GPTM_TIMER_INT_CBMIM                ((unsigned int)0x01 << 9)		// GPTM CaptureB Match Interrupt Mask
-#define GPTM_TIMER_INT_TBTOIM               ((unsigned int)0x01 << 8)		// GPTM TimerB Time-Out Interrupt Mask
-// --------
-#define GPTM_TIMER_INT_RTCIM                ((unsigned int)0x01 << 3)		// GPTM RTC Interrupt Mask
-#define GPTM_TIMER_INT_CAEIM                ((unsigned int)0x01 << 2)		// GPTM CaptureA Event Interrupt Mask
-#define GPTM_TIMER_INT_CAMIM                ((unsigned int)0x01 << 1)		// GPTM CaptureA Match Interrupt Mask
-#define GPTM_TIMER_INT_TATOIM               ((unsigned int)0x01 << 0)		// GPTM TimerA Time-Out Interrupt Mask
-
-
-
-// *****************************************************************************
-// Cortex M System Timer (SysTick) 
-// *****************************************************************************
-typedef struct SYSTICK_S {
-
-			     uint32_t		Res0[1]  ;              // 0xE000E000
-			__IO uint32_t		ICT   ;                 // 0xE000E004
-			     uint32_t		Res1[2]  ;              // 0xE000E008
-			__IO uint32_t		STCTRL   ;              // 0xE000E010
-			__IO uint32_t		STRELOAD ;              // 0xE000E014
-			__IO uint32_t		STCURRENT;              // 0xE000E018
-			__IO uint32_t		STCALIB ;               // 0xE000E01C
-			     uint32_t		Res2[56] ;              // 0xE000E020
-
-} SYSTICK_T, *PSYSTICK_T ;
-
-// -------- SYSTICK_STCTRL : (STCTRL Offset: 0xE000E010) SysTick Control and Status Register -------- 
-#define SYSTICK_STCTRL_COUNT                ((unsigned int)0x1 << 16)		// 0 - The SysTick timer has not counted to 0 since the last time this bit was read.
-#define SYSTICK_STCTRL_CLK                  ((unsigned int)0x1 << 2)		// 1 - System clock
-#define SYSTICK_STCTRL_INTEN                ((unsigned int)0x1 << 1)		// 1 - An interrupt is generated to the NVIC when SysTick counts to 0.
-#define SYSTICK_STCTRL_ENABLE               ((unsigned int)0x1 << 1)		// Enables SysTick to operate in a multi-shot way.
-// -------- SYSTICK_STRELOAD : (STRELOAD Offset: 0xE000E014) Reload Value -------- 
-#define SYSTICK_STRELOAD_MASK                ((unsigned int)0xFFFFFF << 0)		// IRQ mask
-// -------- SYSTICK_STCURRENT : (STCURRENT Offset: 0xE000E018) SysTick Current Value Register -------- 
-
-
-// *****************************************************************************
-// Cortex M Nested Vectored Interrupt Controller 
-// *****************************************************************************
-typedef struct NVIC_S {
-
-            __IO uint32_t		ISER[2]  ;              // 0xE000E100
-			     uint32_t		Res3[30] ;              // 0xE000E120
-			__IO uint32_t		ICER[2]  ;              // 0xE000E180
-			     uint32_t		Res4[30] ;              // 0xE000E1A0
-			__IO uint32_t		ISPR[2]  ;              // 0xE000E200
-			     uint32_t		Res5[30] ;              // 0xE000E220
-			__IO uint32_t		ICPR[2]  ;              // 0xE000E280
-			     uint32_t		Res6[30] ;              // 0xE000E2A0
-			__IO uint32_t		IABR[2]  ;              // 0xE000E300
-			     uint32_t		Res7[64] ;              // 0xE000E320
-			__IO uint32_t		IPR[2]  ;              // 0xE000E400
-			//      uint32_t		Res7[515]  ;            // 0xE000E4F4
-
-} NVIC_T, *PNVIC_T ;
-
-#define NVIC_EXCEPTION_RESET                        1
-#define NVIC_EXCEPTION_NMI                          2
-#define NVIC_EXCEPTION_HARD_FAULT                   3
-#define NVIC_EXCEPTION_MEM_MANAGEMENT               4
-#define NVIC_EXCEPTION_BUS_FAULT                    5
-#define NVIC_EXCEPTION_USAGE_FAULT                  6
-#define NVIC_EXCEPTION_SVCALL                       11
-#define NVIC_EXCEPTION_DEBUG_MON                    12
-#define NVIC_EXCEPTION_PEND_SV                      14
-#define NVIC_EXCEPTION_SYS_TICK                     15
-
-// *****************************************************************************
-// System Control Block (SCB) Registers 
-// *****************************************************************************
-typedef struct SCB_S {
-
-            __IO uint32_t       CPUID ;                 // 0xE000ED00
-            __IO uint32_t       ICSR ;                  // 0xE000ED04
-            __IO uint32_t       VTOR ;                  // 0xE000ED08
-            __IO uint32_t       AIRCR ;                 // 0xE000ED0C
-            __IO uint32_t       SCR ;                   // 0xE000ED10
-            __IO uint32_t       CCR ;                   // 0xE000ED14
-
-            __IO uint32_t       SYS_PRIO[3] ;           // 0xE000ED18
-            __IO uint32_t       SYSHNDCTRL ;            // 0xE000ED24
-            //__IO uint32_t       FAULTSTAT ;           // 0xE000ED28
-            //__IO uint32_t       HFAULTSTAT ;          // 0xE000ED2C
-
-} SCB_T, *PSCB_T ;
-
-
-/* module definitions */
-#define BOARD_BASE_ADDRESS_SYSTICK                  0xE000E000 
-#define BOARD_BASE_ADDRESS_NVIC                     0xE000E100 
-#define BOARD_BASE_ADDRESS_SCB                      0xE000ED00 
-#define BOARD_BASE_ADDRESS_GPTIMER0                 0x40030000 
-
-extern SYSTICK_T*       const                       board_systick ;
-extern NVIC_T*          const                       board_nvic ;
-extern SCB_T*           const                       board_scb ;
-extern GPTM_TIMER_T*    const                       board_gptm0 ;
-
-
-/* Function prototypes */
-extern int              low_level_init (void) ;
-extern void             dbg_format_msg (char *format, ...)  ;
-extern void             dbg_hard_fault_handler_c (unsigned int * hardfault_args) ;
-
-#define DBG_MESSAGE(fmt_str)        {  dbg_format_msg fmt_str  ; }
-
-#endif /* __MODULES_H__ */

platforms/qemu_lm3s/startup.S

@@ -1,215 +0,0 @@
-/*
-  Copyright (c) 2012, Natie van Rooyen. All rights reserved.
- 
-  Redistribution and use in source and binary forms, with or without
-  modification, are permitted provided that the following conditions
-  are met:
- 
-  1. Redistributions of source code must retain the above copyright
-     notice, this list of conditions and the following disclaimer.
-  2. Redistributions in binary form must reproduce the above copyright
-     notice, this list of conditions and the following disclaimer in the
-     documentation and/or other materials provided with the distribution.
-  3. No personal names or organizations' names associated with the
-     Atomthreads project may be used to endorse or promote products
-     derived from this software without specific prior written permission.
- 
-  THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
-  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
-  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-  POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* lm3s Startup Script */
-
-.section .vectors,"x",%progbits
-.syntax unified
-.thumb
-
-
-.global    __interrupt_vector_table
-.extern    archTickHandler
-.extern    archPendSVHandler
-.extern    dbg_hard_fault_handler_c
-
-/**
- *  \b __interrupt_vector_table
- *
- */
-__interrupt_vector_table:
-.long    __c_stack_top__
-.long    reset_Handler
-.long    fault_Handler
-.long    fault_Handler
-.long    fault_Handler
-.long    fault_Handler
-.long    fault_Handler
-.long    0
-.long    0
-.long    0
-.long    0
-.long    sys_Handler
-.long    sys_Handler
-.long    0
-.long    archPendSVHandler
-.long    sys_Handler
-
-/* External interrupts */
-.long    default_Handler                      // GPIO Port A
-.long    default_Handler                      // GPIO Port B
-.long    default_Handler                      // GPIO Port C
-.long    default_Handler                      // GPIO Port D
-.long    default_Handler                      // GPIO Port E
-.long    default_Handler                      // UART0 Rx and Tx
-.long    default_Handler                      // UART1 Rx and Tx
-.long    default_Handler                      // SSI0 Rx and Tx
-.long    default_Handler                      // I2C0 Master and Slave
-.long    default_Handler                      // PWM Fault
-.long    default_Handler                      // PWM Generator 0
-.long    default_Handler                      // PWM Generator 1
-.long    default_Handler                      // PWM Generator 2
-.long    default_Handler                      // Quadrature Encoder 0
-.long    default_Handler                      // ADC Sequence 0
-.long    default_Handler                      // ADC Sequence 1
-.long    default_Handler                      // ADC Sequence 2
-.long    default_Handler                      // ADC Sequence 3
-.long    default_Handler                      // Watchdog timer
-.long    archTickHandler                      // Timer 0 subtimer A
-.long    default_Handler                      // Timer 0 subtimer B
-.long    default_Handler                      // Timer 1 subtimer A
-.long    default_Handler                      // Timer 1 subtimer B
-.long    default_Handler                      // Timer 2 subtimer A
-.long    default_Handler                      // Timer 2 subtimer B
-.long    default_Handler                      // Analog Comparator 0
-.long    default_Handler                      // Analog Comparator 1
-.long    default_Handler                      // Analog Comparator 2
-.long    default_Handler                      // System Control (PLL, OSC, BO)
-.long    default_Handler                      // FLASH Control
-.long    default_Handler                      // GPIO Port F
-.long    default_Handler                      // GPIO Port G
-.long    default_Handler                      // GPIO Port H
-.long    default_Handler                      // UART2 Rx and Tx
-.long    default_Handler                      // SSI1 Rx and Tx
-.long    default_Handler                      // Timer 3 subtimer A
-.long    default_Handler                      // Timer 3 subtimer B
-.long    default_Handler                      // I2C1 Master and Slave
-.long    default_Handler                      // Quadrature Encoder 1
-.long    default_Handler                      // CAN0
-.long    default_Handler                      // CAN1
-.long    default_Handler                      // CAN2
-.long    default_Handler                      // Ethernet
-.long    default_Handler                      // Hibernate
-
-/**
- *  \b sys_Handler
- *
- *  @return None
- */
-.thumb_func
-sys_Handler:
-    B .
-
-/**
- *  \b default_Handler
- *
- *  @return None
- */
-.thumb_func
-default_Handler:
-    B .
-
-/**
- *  \b fault_Handler
- *
- *  @return None
- */
- .thumb_func
-fault_Handler:
-    tst     lr, #4
-    ite     eq
-    mrseq   r0, MSP
-    mrsne   r0, PSP
-    b       dbg_hard_fault_handler_c
-
-
-.section .startup,"x",%progbits
-.syntax unified
-.thumb
-
-.global reset_Handler
-.extern initialise_monitor_handles
-.extern low_level_init
-.extern main
-
-
-/**
- *  \b reset_Handler
- *
- *  
- *
- *  @return None
- */
-.thumb_func
-reset_Handler:
-
-/* 
- * Initialize the data and bss sections.
- */
-init_data:
-    ldr    r0, .ETEXT
-    ldr    r1, .DATA
-    ldr    r2, .EDATA
-    sub    r2, r2, r1
-    cmp    r2, #0
-    beq    init_bss
-init_data_copy:
-    ldrb   r4, [r0], #1
-    strb   r4, [r1], #1
-    subs   r2, r2, #1
-    bne    init_data_copy
-init_bss:
-    mov    r0, #0
-    ldr    r1, = .BSS
-    ldr    r2, = .EBSS
-    sub    r2, r2, r1
-    cmp    r2, #0
-    beq    init_done
-init_bss_zero:
-    strb   r0, [r1], #1
-    subs   r2, r2, #1
-    bne    init_bss_zero
-init_done:
-
-    /*
-     * The following call initializes the function pointers for stdio etc.
-     * These are used by the semihosting interface.
-     *
-     * This function is implemented in newlib.
-     */
-    bl initialise_monitor_handles
-    
-    /*
-     * Platform specific low level initialization.
-     */
-    bl low_level_init 
-
-    /*
-     * Call the application's entry point.
-     */
-    bl main
-
-
-.BSS:    .long    _bss
-.EBSS:   .long    _ebss
-.ETEXT:  .long    _etext
-.DATA:   .long    _data
-.EDATA:  .long    _edata
-
-.end

platforms/qemu_lm3s/system.ld

@@ -1,72 +0,0 @@
-
-
-MEMORY
-{
-    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
-    SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00010000
-}
-
-SECTIONS
-{
-    _vRamTop = 0x20000000 + 0x00010000;
-    .text :
-    {
-        KEEP(*(.vectors))
-		*(.startup)
-        *(.text*)
-        *(.rodata*)
-    } > FLASH
-
-    /*
-     * for exception handling/unwind - some Newlib functions (in common with
-     * C++ and STDC++) use this.
-     */
-
-    .ARM.extab :
-    {
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-    } > FLASH
-
-    __exidx_start = .;
-    .ARM.exidx :
-    {
-        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > FLASH
-    __exidx_end = .;
-
-    _etext = .;
-
-    .data : AT (__exidx_end)
-    {
-        _data = .;
-        *(vtable)
-        *(.data*)
-        _edata = .;
-    } > SRAM
-
-    /* zero initialized data */
-
-    .bss :
-    {
-		__bss_start__ = . ;
-        _bss = .;
-        *(.bss*)
-        *(COMMON)
-		__bss_end__ = . ;
-        _ebss = .;
-    } > SRAM
-
-    /* Where we put the heap with cr_clib */
-
-    .cr_heap :
-    {
-        end = .;
-        _pvHeapStart = .;
-    } > SRAM
-
-    _vStackTop = _vRamTop - 16;
-	.stack  _vStackTop :
-	{
-		__c_stack_top__ = . ;
-	}
-}

platforms/rules.mk

@@ -1,62 +0,0 @@
-#
-# The following part of the makefile is generic; it can be used to 
-# build any executable just by changing the definitions above and by
-# deleting dependencies appended to the file from 'make depend'
-#
-.SUFFIXES: .asm .elf .hex .lst .o .S .s .c .cpp
-.PHONY: depend clean
-
-dump:
-		@echo "Target: "
-		@echo $(TARGET_NAME)
-		@echo "Source files: "
-		@echo  $(SRCS)
-		@echo  $(ASMS)
-		@echo "Object files: "
-		@echo  $(OBJS)
-
-all:  target 
-
-target: $(OBJS)
-		$(LN) $(LFLAGS)  $(LIBFLAGS) $(OBJS) $(LLIBS) -o $(TARGET_NAME).elf
-		@echo $(TARGET_NAME).elf was compiled
-		arm-none-eabi-objcopy -O binary $(TARGET_NAME).elf $(TARGET_NAME).bin
-		arm-none-eabi-objdump -dxS $(TARGET_NAME).elf > $(TARGET_NAME).out
-
-clean:
-		rm -f $(OBJS)
-
-
-# this is a suffix replacement rule for building .o's from .c's
-# it uses automatic variables $<: the name of the prerequisite of
-# the rule(a .c file) and $@: the name of the target of the rule (a .o file) 
-# (see the gnu make manual section about automatic variables)
-
-.c.o:
-		$(CC) $(CDEFS) $(CFLAGS) $(INCLUDES) -c $<  -o  $@
-		
-.cpp.o:
-		$(CC) $(CDEFS) $(CFLAGS) $(INCLUDES) -c $<  -o  $@
-		
-.S.o:
-		$(AS) $(ADEFS) $(AFLAGS) $(INCLUDES) -c $<  -o  $@
-
-.s.o:
-		$(AS) $(ADEFS) $(AFLAGS) $(INCLUDES) -c $<  -o  $@
-
-DEPFILE=.depends
-DEPTOKEN='\# MAKEDEPENDS'
-DEPFLAGS=-Y -f $(DEPFILE) -s $(DEPTOKEN) -p $(OUTDIR)/
-
-
-depend:
-	rm -f $(DEPFILE)
-	make $(DEPFILE)
-
-$(DEPFILE):
-	@echo $(DEPTOKEN) > $(DEPFILE)
-	makedepend $(DEPFLAGS) -- $(CFLAGS) -- $(SRCS) >&/dev/null
-	
-# put this file in the last line of your Makefile
-sinclude $(DEPFILE)
- 

ports/arm/atomport-asm.s

@@ -43,6 +43,10 @@
 
 .extern __interrupt_dispatcher 
 
+/* When using newlib, reentrancy context needs to be updated on task switch */
+.extern _impure_ptr
+
+
 /**/
 .equ USR_MODE,            0x10
 .equ FIQ_MODE,            0x11
@@ -60,7 +64,7 @@
 .code 32
 
 
-/*
+/**
  * \b archContextSwitch
  *
  * Architecture-specific context switch routine.
@@ -80,6 +84,10 @@
 archContextSwitch:
     STMFD       sp!, {r4 - r11, lr}             /* Save registers */
 
+    ADD         r4, r1, #4                      /* Add offset to get address of new_tcb_ptr->reent context (second TCB element) */
+    LDR         r5, = _impure_ptr               /* Get address of _impure_ptr into r5 */
+    STR         r4, [r5]                        /* Store new_tcb_ptr->reent context in _impure_ptr */
+
     STR         sp, [r0]                        /* Save old SP in old_tcb_ptr->sp_save_ptr (first TCB element) */
     LDR         r1, [r1]                        /* Load new SP from new_tcb_ptr->sp_save_ptr (first TCB element) */
     MOV         sp, r1                           
@@ -120,6 +128,11 @@ archContextSwitch:
  * void archFirstThreadRestore (ATOM_TCB *new_tcb_ptr)
  */
 archFirstThreadRestore:
+
+    ADD         r4, r0, #4                      /* Add offset to get address of new_tcb_ptr->reent context (second TCB element) */
+    LDR         r5, = _impure_ptr               /* Get address of _impure_ptr into r5 */
+    STR         r4, [r5]                        /* Store new_tcb_ptr->reent context in _impure_ptr */
+
     LDR         r0, [r0]                        /* Get SP (sp_save_ptr is conveniently first element of TCB) */
     MOV         sp, r0                          /* Load new stack pointer */
     LDMFD       sp!, {r4 - r11, pc}             /* Load new registers */

ports/arm/atomport-private.h

@@ -30,7 +30,6 @@
 #ifndef __ATOM_PORT_PRIVATE_H
 #define __ATOM_PORT_PRIVATE_H
 
-
 /* Function prototypes */
 extern void archIRQHandler (void);
 

ports/arm/atomport.c

@@ -27,6 +27,10 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <stdio.h>
+#include <string.h>
+#include <sys/reent.h>
+
 #include "atom.h"
 #include "atomport.h"
 
@@ -68,6 +72,14 @@ static void thread_shell (void)
     /* Get the TCB of the thread being started */
     curr_tcb = atomCurrentContext();
 
+    /**
+     * Open a stdout file descriptor so that the thread has its own stdout.
+     * In theory threads could open stdout to different output drivers
+     * if syscalls.s supported different output write functions.
+     */
+    stdout = fopen ("/debuguart", "w");
+    setvbuf (stdout, 0, _IONBF, 0);
+ 
     /**
      * Enable interrupts - these will not be enabled when a thread
      * is first restored.
@@ -80,8 +92,12 @@ static void thread_shell (void)
         curr_tcb->entry_point(curr_tcb->entry_param);
     }
 
+    /* Clean up after thread completion */
+    fclose (stdout);
+    _reclaim_reent (&(curr_tcb->port_priv.reent));
+
     /* Thread has run to completion: remove it from the ready list */
-    curr_tcb->suspended = TRUE;
+    curr_tcb->terminated = TRUE;
     atomSched (FALSE);
 }
 
@@ -153,5 +169,10 @@ void archThreadContextInit (ATOM_TCB *tcb_ptr, void *stack_top, void (*entry_poi
      */
     tcb_ptr->sp_save_ptr = stack_ptr;
 
+    /**
+     * At thread startup (and every time we switch back to a thread)
+     * we set the global reentrancy pointer to this thread's reent struct
+     */
+    _REENT_INIT_PTR (&(tcb_ptr->port_priv.reent));
 }
 

ports/arm/atomport.h

@@ -36,10 +36,12 @@
 /* Definition of NULL is available from stddef.h on this platform */
 #include <stddef.h>
 
+/* Reentrancy structure */
+#include <sys/reent.h>
+
 /* Required number of system ticks per second (normally 100 for 10ms tick) */
 #define SYSTEM_TICKS_PER_SEC            100
 
-
 /* Size of each stack entry / stack alignment size (32 bits on this platform) */
 #define STACK_ALIGN_SIZE                sizeof(uint32_t)
 
@@ -50,7 +52,23 @@
  */
 #define POINTER void *
 
-/* *
+/**
+ * Hardware timer functions (optional, not available on all ports)
+ */
+extern void archUsleep (int32_t microsecs);
+extern int32_t archUsleepStart (void);
+extern int archUsleepCheckExpired (int32_t start_time, int32_t delay_usecs);
+extern int32_t archUsecStart (void);
+extern int32_t archUsecDiff (int32_t start_time);
+
+/**
+ * ISR handler registration (optional, not available on all ports)
+ */
+typedef void (*ISR_FUNC)(int int_vector);
+extern int archIntInstallISR (int int_vector, ISR_FUNC isr_func);
+extern int archIntEnable (int int_vector, int enable);
+
+/**
  *
  * Functions defined in atomport_arm.asm
  *
@@ -58,7 +76,6 @@
 extern uint32_t  contextEnterCritical (void) ;
 extern void      contextExitCritical (uint32_t posture) ;
 
-
 /**
  * Critical region protection: this should disable interrupts
  * to protect OS data structures during modification. It must
@@ -69,6 +86,15 @@ extern void      contextExitCritical (uint32_t posture) ;
 #define CRITICAL_START()        __atom_critical = contextEnterCritical()
 #define CRITICAL_END()          contextExitCritical(__atom_critical)
 
+/**
+ * When using newlib, define port private field in atom_tcb to be a
+ * struct _reent.
+ */
+struct arm_port_priv {
+    struct _reent reent;
+};
+#define THREAD_PORT_PRIV    struct arm_port_priv port_priv
+
 /* Uncomment to enable stack-checking */
 /* #define ATOM_STACK_CHECKING */
 

ports/arm/platforms/dm36x/Makefile

@@ -0,0 +1,161 @@
+############
+# Settings #
+############
+
+# Build all test applications:
+#   make
+#
+# Run all tests communicating via UART
+#   make tests
+
+# Location of build tools and atomthreads sources
+KERNEL_DIR=../../../../kernel
+TESTS_DIR=../../../../tests
+PORT_DIR=../..
+CC=arm-none-eabi-gcc
+OBJCOPY=arm-none-eabi-objcopy
+ARCHIVE=arm-none-eabi-ar
+
+# Folder delete command (OS-specific)
+ifeq ($(OS),Windows_NT)
+	RMDIR=rd /s /q
+else
+	RMDIR=rm -rf
+endif
+
+# Location of TFTP root folder for running tests via U-Boot/TFTP.
+# Note, you may need to run the Makefile as root in order to write
+# to this folder.
+TESTS_TFTPROOT=/var/lib/tftpboot
+
+# TTY device and baudrate for automated tests.
+TESTS_TTYDEV=/dev/ttyUSB0
+TESTS_TTYBAUD=115200
+
+# Enable stack-checking.
+#STACK_CHECK=true
+
+# Test programs: Log stack usage to UART (if STACK_CHECK is enabled)
+#TESTS_LOG_STACK=true
+
+# Directory for built objects
+BUILD_DIR=build
+
+# Platform-specific object files
+PLATFORM_OBJECTS = atomport-private.o uart.o timer.o
+PLATFORM_ASM_OBJECTS = startup.o
+
+# Port-specific object files
+PORT_OBJECTS = atomport.o tests-main.o syscalls.o
+PORT_ASM_OBJECTS = atomport-asm.o
+
+# Kernel object files
+KERNEL_OBJECTS = atomkernel.o atomsem.o atommutex.o atomtimer.o atomqueue.o
+
+# Collection of built objects (excluding test applications)
+ALL_OBJECTS = $(PLATFORM_OBJECTS) $(PLATFORM_ASM_OBJECTS) $(PORT_OBJECTS) $(PORT_ASM_OBJECTS) $(KERNEL_OBJECTS)
+BUILT_OBJECTS = $(patsubst %,$(BUILD_DIR)/%,$(ALL_OBJECTS))
+
+# Test object files (dealt with separately as only one per application build)
+TEST_OBJECTS = $(notdir $(patsubst %.c,%.o,$(wildcard $(TESTS_DIR)/*.c)))
+
+# Target application filenames for each test object
+TEST_UIMAGES = $(patsubst %.o,%.uImage,$(TEST_OBJECTS))
+TEST_BINS = $(patsubst %.o,%.bin,$(TEST_OBJECTS))
+TEST_ELFS = $(patsubst %.o,%.elf,$(TEST_OBJECTS))
+
+# Search build/output directory for dependencies
+vpath %.o ./$(BUILD_DIR)
+vpath %.elf ./$(BUILD_DIR)
+
+# GCC flags
+CFLAGS=-c -mcpu=arm926ej-s -ffreestanding -Wall -Werror -Wno-unused-but-set-variable
+AFLAGS=$(CFLAGS) -x assembler-with-cpp
+LFLAGS=-mcpu=arm926ej-s -Tsystem.ld -Wall
+
+# Enable stack-checking options (disable if not required)
+ifeq ($(STACK_CHECK),true)
+CFLAGS += -DATOM_STACK_CHECKING
+endif
+ifeq ($(TESTS_LOG_STACK),true)
+CFLAGS += -DTESTS_LOG_STACK_USAGE
+endif
+
+
+#################
+# Build targets #
+#################
+
+# All tests
+all: $(BUILD_DIR) $(TEST_ELFS) $(TEST_BINS) $(TEST_UIMAGES) Makefile
+
+# Build archive for linking with external application
+libatomthreads.a: $(BUILD_DIR) $(ALL_OBJECTS) Makefile
+	$(ARCHIVE) cr $(BUILD_DIR)/$@ $(BUILT_OBJECTS)
+
+# Make build/output directory
+$(BUILD_DIR):
+	mkdir $(BUILD_DIR)
+
+# Test ELF files (one application build for each test)
+$(TEST_ELFS): %.elf: %.o $(ALL_OBJECTS)
+	$(CC) $(LFLAGS) $(BUILD_DIR)/$(notdir $<) $(BUILT_OBJECTS) --output $(BUILD_DIR)/$@ -Wl,-Map,$(BUILD_DIR)/$(basename $@).map
+
+# Test BIN files (one application build for each test)
+$(TEST_BINS): %.bin: %.elf $(TEST_ELFS)
+	$(OBJCOPY) -O binary $(BUILD_DIR)/$(basename $@).elf $(BUILD_DIR)/$(basename $@).bin
+
+# Test uImage files (one application build for each test)
+$(TEST_UIMAGES): %.uImage: %.bin $(TEST_BINS)
+	gzip -9 -c $(BUILD_DIR)/$(basename $@).bin > $(BUILD_DIR)/$(basename $@).bin.gz
+	mkimage -A arm -T kernel -C gzip -a 0x80000000 -e 0x80000000 -n "Atomthreads application" -d $(BUILD_DIR)/$(basename $@).bin.gz $(BUILD_DIR)/$(basename $@).uImage
+
+# Kernel objects builder
+$(KERNEL_OBJECTS): %.o: $(KERNEL_DIR)/%.c
+	$(CC) -c $(CFLAGS) -I. -I$(PORT_DIR) $< -o $(BUILD_DIR)/$(notdir $@)
+
+# Test objects builder
+$(TEST_OBJECTS): %.o: $(TESTS_DIR)/%.c
+	$(CC) -c $(CFLAGS) -I. -I$(PORT_DIR) -I$(KERNEL_DIR) $< -o $(BUILD_DIR)/$(notdir $@)
+
+# Platform C objects builder
+$(PLATFORM_OBJECTS): %.o: ./%.c
+	$(CC) -c $(CFLAGS) -I. -I$(PORT_DIR) -I$(KERNEL_DIR) -I$(TESTS_DIR) $< -o $(BUILD_DIR)/$(notdir $@)
+
+# Platform asm objects builder
+$(PLATFORM_ASM_OBJECTS): %.o: ./%.s
+	$(CC) -c $(AFLAGS) -I. -I$(PORT_DIR) -I$(KERNEL_DIR) $< -o $(BUILD_DIR)/$(notdir $@)
+
+# Port C objects builder
+$(PORT_OBJECTS): %.o: $(PORT_DIR)/%.c
+	$(CC) -c $(CFLAGS) -I. -I$(PORT_DIR) -I$(KERNEL_DIR) -I$(TESTS_DIR) $< -o $(BUILD_DIR)/$(notdir $@)
+
+# Port asm objects builder
+$(PORT_ASM_OBJECTS): %.o: $(PORT_DIR)/%.s
+	$(CC) -c $(AFLAGS) -I. -I$(PORT_DIR) -I$(KERNEL_DIR) $< -o $(BUILD_DIR)/$(notdir $@)
+
+# .lst file builder
+%.lst: %.c
+	$(CC) $(CFLAGS) -I. -I$(PORT_DIR) -I$(KERNEL_DIR) -I$(TESTS_DIR) -Wa,-al $< > $@
+
+# Clean
+clean:
+	$(RMDIR) build
+	$(RMDIR) doxygen-kernel
+	$(RMDIR) doxygen-arm
+	$(RMDIR) doxygen-platform
+
+# Generate Doxygen documentation
+doxygen:
+	doxygen $(KERNEL_DIR)/Doxyfile
+	doxygen ../../Doxyfile
+	doxygen ./Doxyfile
+
+# Run tests on target with expect and serial output
+phony_test_bins = $(addsuffix .sim, $(TEST_BINS))
+tests: $(phony_test_bins)
+.PHONY: tests $(phony_test_bins)
+$(phony_test_bins):
+	cp $(BUILD_DIR)/$(basename $@) $(TESTS_TFTPROOT)/test.bin
+	@echo Running test $(basename $@)
+	./run_test.exp $(TESTS_TTYDEV) $(TESTS_TTYBAUD)

ports/arm/platforms/dm36x/README

@@ -0,0 +1,213 @@
+---------------------------------------------------------------------------
+
+Library:      Atomthreads DaVinci DM365/DM368 Platform.
+Author:       Kelvin Lawson <info@atomthreads.com>
+Website:      http://atomthreads.com
+License:      BSD Revised
+
+---------------------------------------------------------------------------
+
+DaVinci DM36x (ARM926EJ-S) Platform
+
+The "dm36x" platform folder contains sources for building a sample
+Atomthreads RTOS application for DaVinci DM365 and DM368 (ARM926EJ-S)
+platforms.
+
+This has been tested on a DM368 Leopardboard platform, but will work on any
+DM36x-based platform.
+
+
+---------------------------------------------------------------------------
+
+SOURCE LAYOUT
+
+All of the cross-platform kernel code is contained in the top-level 
+'kernel' folder, while ports to specific CPU architectures are contained in
+the 'ports' folder tree. To support multiple ARM boards/platforms using a
+single common ARM architecture port, the ARM port contains 'platform'
+sub-folders in which the board/platform-specific code is situated. This
+allows the sharing of common ARM port code between many different ARM
+boards with different interrupt controllers, UARTs etc but which all reuse
+the same common core ARM context-switching code.
+
+This platform contains a few key platform-specific files:
+
+ * startup.s: Interrupt vector table and basic startup assembly code
+ * atomport-private.c: Low level initialisation for this platform
+ * uart.c: Simple UART implementation for debug purposes
+
+The common ARM architecture port that is used across all platforms contains
+the basic code for thread-switching on all ARM platforms:
+
+ * atomport.c: Those functions which can be written in C
+ * atomport-asm.s: The main register save/restore assembler routines
+
+Each Atomthreads port requires also a header file which describes various
+architecture-specific details such as appropriate types for 8-bit, 16-bit
+etc variables, the port's system tick frequency, and macros for performing
+interrupt lockouts / critical sections:
+
+ * atomport.h: Port-specific header required by the kernel for each port
+
+A couple of additional source files are also included in the common ARM port:
+
+ * tests-main.c: Main application file (used for launching automated tests)
+ * syscalls.c: Simple implementation of open/close/read/write for stdio
+
+Atomthreads includes a suite of automated tests which prove the key OS
+functionality, and can be used with any architecture ports. This platform
+provides an easy mechanism for building and quickly running the test suite
+using a serial port connected to real hardware to prove the OS.
+
+
+---------------------------------------------------------------------------
+
+GCC TOOLCHAIN
+
+The port works out-of-the-box with the GCC tools (for building). It can be
+built on any OS for which GCC is available, and was tested using the
+CodeSourcery toolchain (2009q3 non-Linux but others should be supported).
+Note that the Makefile for this platform assumes that your GCC binary is
+named "arm-none-eabi-gcc".
+
+Currently we assume that the toolchain will provide some header files like
+stdint.h. Not all toolchains will include this, in which case you simply
+need to add definitions for int32_t and friends in atomport.h, in place of
+the include declaration for stdint.h.
+
+
+---------------------------------------------------------------------------
+
+OTHER PREREQUISITES
+
+Running the entire automated test suite in one command via "make tests"
+requires the "expect" program.
+
+".bin" images bootable via U-boot are created as part of the build but if
+uImage format is preferred then the "mkimage" application is also
+required.
+
+
+---------------------------------------------------------------------------
+
+BUILDING THE SOURCE
+
+A Makefile is provided for building the kernel, port, platform and
+automated tests. Make sure the ARM GCC toolchain is in the path
+(e.g. "PATH=$PATH:/opt/arm-2009q3/bin && export path") and carry out the
+full build using the following:
+
+ * make all
+
+All objects are built into the 'build' folder under 
+ports/arm/platforms/dm36x. The build process builds separate target
+applications for each automated test, and appropriate ELF/BIN files can be
+found in the build folder ready for running on the target. Each test is
+built and run as a separate application.
+
+
+All built objects etc can be cleaned using:
+
+ * make clean
+
+
+The Atomthreads sources are documented using Doxygen markup. You can build
+both the kernel and port documentation from this folder using:
+
+ * make doxygen
+
+
+---------------------------------------------------------------------------
+
+PLATFORM SPECIFICS
+
+This RTOS port was developed on the DM368 Leopardboard, but there is
+currently very little board-specific code present, other than the choice of
+UART (the Leopardboard uses UART0 but many boards use UART1). The UART is
+used to print out pass/fail indications and other information via a serial
+debug cable connected to the board. For other boards using UART1 you may
+simply change the UART_BASE definition in uart.c.
+
+
+---------------------------------------------------------------------------
+
+AUTOMATED TESTS
+
+Atomthreads contains a set of generic kernel tests which can be run on any
+port to prove that all core functionality is working on your target.
+
+The full set of tests can be found in the top-level 'tests' folder. Each of
+these tests is built as an independent application in the 'build' folder.
+
+These can be run on the target using the instructions below.
+
+To view the test results, connect a serial debug cable to your target
+platform. On starting, the test applications print out "Go" on the UART.
+Once the test is complete they will print out "Pass" or "Fail", along with
+other information if the test failed.
+
+Most of the tests complete within a few seconds, but some (particularly
+the stress tests) can take longer, so be patient. 
+
+The full suite of tests endeavours to exercise as much of the kernel code
+as possible, and can be used for quick confirmation of core OS
+functionality if you ever need to make a change to the kernel or port.
+
+The test application main() is contained in tests-main.c. This initialises
+the OS, creates a main thread, and calls out to the test modules.
+
+
+---------------------------------------------------------------------------
+
+RUNNING THE FULL TEST SUITE
+
+It is possible to run the full automated test suite on the target board.
+This is very useful for quick verification of the entire test suite after
+making any software changes.
+
+A single command runs every single test application on the target, and
+automatically parses the UART output to verify that each test case passes.
+
+This requires the "expect" application on your development PC.
+
+To run all tests in one command, type:
+
+ * make tests
+
+This will download every single test application to your TFTP folder one at
+a time, ready for the target to load via U-Boot, and quit immediately if
+any one test fails.
+
+You should set your target board to load the file "test.bin" via TFTP and
+hit the reset button after each test has completed (when prompted).
+The U-boot "bootcmd" variable should be set as follows:
+
+ * setenv 'tftpboot 0x80000000 test.bin; go 0x80000000'
+ * saveenv
+
+Now when you run "make tests" it will copy each test application binary
+into your TFTP root folder one-by-one, and request that you reset the board
+to start the next test running. Passes or failures are reported, and the
+test suite quits if any test suite failures are encountered.
+
+The ability to run these automated tests in one command allows you to
+easily include the OS test suite in your nightly build or continous
+integration system and quickly find out if any of your local changes have
+caused any of the operating system tests to fail. In order to include them
+in a nightly test run you will need to set the test applications to
+automatically reset after running each test.
+
+
+---------------------------------------------------------------------------
+
+WRITING APPLICATIONS
+
+The easiest way to start a new application which utilises the Atomthreads
+scheduler is to base your main application startup on tests-main.c. This
+initialises the OS and calls out to the test module entry functions. You
+can generally simply replace the call to the test modules by a call to your
+own application startup code.
+
+
+---------------------------------------------------------------------------
+

ports/arm/platforms/dm36x/atomport-private.c

@@ -0,0 +1,305 @@
+/*
+ * Copyright (c) 2013, Kelvin Lawson. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <stdarg.h>
+#include "atomport.h"
+#include "atomport-private.h"
+#include "atom.h"
+#include "atomport.h"
+#include "dm36x-io.h"
+#include "uart.h"
+ 
+
+/** Imports required by C startup code */
+extern unsigned long _start_vectors, _end_vectors, _end_text, _start_data, _end_data, _start_bss, _end_bss;
+extern int main(void);
+
+
+/** Register access macros */
+#define TIMER0_REG(offset)      *(volatile uint32_t *)(DM36X_TIMER0_BASE + offset)
+#define INTC_REG(offset)        *(volatile uint32_t *)(DM36X_INTC_BASE + offset)
+
+/**
+ * Table of registered ISR handlers: pre-initialised
+ * with all disabled except the Atomthreads timer tick ISR.
+ */
+static ISR_FUNC isr_handlers[DM36X_INTC_MAX_VEC + 1] =
+{ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
+  (void *)atomTimerTick, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
+
+
+/**
+ * \b _mainCRTStartup
+ *
+ * C startup code for environments without a suitable built-in one.
+ * May be provided by the compiler toolchain in some cases.
+ *
+ */
+extern void _mainCRTStartup (void) __attribute__((weak));
+void _mainCRTStartup(void)
+{
+    unsigned long *src;
+    unsigned long *dst;
+
+    // Copy vector table from SRAM to IRAM0 (ARM vector table must be at 0x00000000)
+    src = &_start_vectors;
+    dst = (unsigned long *)0x00000000;
+    while(src < &_end_vectors)
+        *(dst++) = *(src++);
+
+#ifdef ROM
+    // Running from ROM: copy data section to RAM
+    src = &_end_text;
+    dst = &_start_data;
+    while(dst < &_end_data)
+        *(dst++) = *(src++);
+#endif
+
+    // Clear BSS
+    src = &_start_bss;
+    while(src < &_end_bss)
+        *(src++) = 0;
+
+    // Jump to main application entry point
+    main();
+}
+
+
+/**
+ * \b low_level_init
+ *
+ * Initializes the PIC and starts the system timer tick interrupt.
+ *
+ */
+int
+low_level_init (void)
+{
+    /* Initialise TIMER0 registers for interrupt 100 times per second */
+
+    /* Reset & disable all TIMER0 timers */
+    TIMER0_REG(DM36X_TIMER_INTCTL_STAT) = 0;    /* Disable interrupts */
+    TIMER0_REG(DM36X_TIMER_TCR) = 0;            /* Disable all TIMER0 timers */
+    TIMER0_REG(DM36X_TIMER_TGCR) = 0;           /* Put all TIMER0 timers in reset */
+    TIMER0_REG(DM36X_TIMER_TIM12) = 0;          /* Clear Timer 1:2 */
+
+    /* Set up Timer 1:2 in 32-bit unchained mode */
+    TIMER0_REG(DM36X_TIMER_TGCR) = (1 << 2);    /* Select 32-bit unchained mode (TIMMODE) */
+    TIMER0_REG(DM36X_TIMER_TGCR) |= (1 << 0);   /* Remove Timer 1:2 from reset (TIM12RS) */
+    TIMER0_REG(DM36X_TIMER_PRD12) = (TIMER_CLK / SYSTEM_TICKS_PER_SEC) - 1;     /* Set period to 100 ticks per second (PRD12) */
+    TIMER0_REG(DM36X_TIMER_TCR) |= (0 << 8);    /* Select external clock source for Timer 1:2 (CLKSRC12) */
+
+    /* Enable interrupts */
+    TIMER0_REG(DM36X_TIMER_INTCTL_STAT) = (1 << 1) | (1 << 0);  /* Enable/ack Compare/Match interrupt for Timer 1:2 */
+
+    /* Enable timer */
+    TIMER0_REG(DM36X_TIMER_TCR) |= (2 << 6);    /* Enable Timer 1:2 continuous (ENAMODE12) */
+
+    /* Initialise INTC interrupt controller (all at lowest priority 7) */
+    INTC_REG(DM36X_INTC_PRI0) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI1) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI2) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI3) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI4) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI5) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI6) = 0x77777777;
+    INTC_REG(DM36X_INTC_PRI7) = 0x77777777;
+    INTC_REG(DM36X_INTC_INTCTL) = 0;
+    INTC_REG(DM36X_INTC_EABASE) = 0;
+    INTC_REG(DM36X_INTC_EINT0) = 0;
+    INTC_REG(DM36X_INTC_EINT1) = 0;
+
+    /* Ack TINT0 IRQ in INTC interrupt controller */
+    INTC_REG(DM36X_INTC_IRQ1) = (1 << (DM36X_INTC_VEC_TINT0 - 32));
+
+    /* Enable TINT0 IRQ in INTC interrupt controller */
+    INTC_REG(DM36X_INTC_EINT1) |= (1 << (DM36X_INTC_VEC_TINT0 - 32));
+
+    return 0 ;
+}
+
+
+/**
+ * \b archIntInstallISR
+ *
+ * Register an interrupt handler to be called if a particular
+ * interrupt vector occurs.
+ *
+ * Note that all registered ISRs are called within atomIntEnter()
+ * and atomIntExit() calls, which means they can use OS services
+ * that do not block (e.g. atomSemPut()).
+ *
+ * @param[in] int_vector Interrupt vector to install handler for
+ * @param[in] isr_func Handler to call when specified int occurs
+ *
+ * @retval ATOM_OK Success
+ * @retval ATOM_ERROR Error
+ */
+int archIntInstallISR (int int_vector, ISR_FUNC isr_func)
+{
+    int status;
+
+    /* Check vector is valid */
+    if ((int_vector < 0) || (int_vector > DM36X_INTC_MAX_VEC))
+    {
+        /* Invalid vector number */
+        status = ATOM_ERROR;
+    }
+    else
+    {
+        /* Valid vector, install it in the ISR table */
+    	isr_handlers[int_vector] = isr_func;
+        status = ATOM_OK;
+    }
+
+    return (status);
+}
+
+
+/**
+ * \b archIntEnable
+ *
+ * Enable/unmask an interrupt in the interrupt controller.
+ * @param[in] int_vector Interrupt vector to enable/disable
+ * @param[in] enable TRUE=enable, FALSE=disable
+ *
+ * @retval ATOM_OK Success
+ * @retval ATOM_ERROR Error
+ */
+int archIntEnable (int int_vector, int enable)
+{
+	CRITICAL_STORE;
+    int status;
+
+    /* Check vector is valid */
+    if ((int_vector < 0) || (int_vector > DM36X_INTC_MAX_VEC))
+    {
+        /* Invalid vector number */
+        status = ATOM_ERROR;
+    }
+    else
+    {
+        /* Valid vector, mask or unmask it using RMW */
+		CRITICAL_START();
+		if (enable)
+		{
+			/* Enable/unmask the interrupt */
+	    	INTC_REG(((int_vector >= 32) ? DM36X_INTC_EINT1 : DM36X_INTC_EINT0))
+					|= (1 << ((int_vector >= 32) ? (int_vector - 32) : int_vector));
+		}
+		else
+		{
+			/* Disable/mask the interrupt */
+	    	INTC_REG(((int_vector >= 32) ? DM36X_INTC_EINT1 : DM36X_INTC_EINT0))
+					&= ~(1 << ((int_vector >= 32) ? (int_vector - 32) : int_vector));
+		}
+		CRITICAL_END();
+        status = ATOM_OK;
+    }
+
+    return (status);
+}
+
+
+/**
+ * \b __interrupt_dispatcher
+ *
+ * Interrupt dispatcher: determines the source of the IRQ and calls
+ * the appropriate ISR.
+ *
+ * Note that any ISRs which call Atomthreads OS routines that can
+ * cause rescheduling of threads must be surrounded by calls to
+ * atomIntEnter() and atomIntExit().
+ *
+ */
+void
+__interrupt_dispatcher (void) 
+{
+    uint32_t vector;
+    uint32_t irqentry;
+
+    /* Read IRQENTRY register to determine the source of the interrupt */
+    irqentry = INTC_REG(DM36X_INTC_IRQENTRY);
+
+    /* Check for spurious interrupt */
+    if (irqentry == 0)
+    {
+        /* Spurious interrupt */
+        uart_write_halt ("Spurious IRQ\n");
+    }
+    else
+    {
+        /* Translate from vector address to vector number */
+        vector = (INTC_REG(DM36X_INTC_IRQENTRY) / 4) - 1;
+
+        /* Check vector number is valid */
+        if ((vector > 0) && (vector <= DM36X_INTC_MAX_VEC) && (isr_handlers[vector] != NULL))
+        {
+            /* Ack the interrupt immediately, could get scheduled out below */
+            INTC_REG(((vector >= 32) ? DM36X_INTC_IRQ1 : DM36X_INTC_IRQ0)) = (1 << ((vector >= 32) ? (vector - 32) : vector));
+
+            /*
+             * Let the Atomthreads kernel know we're about to enter an OS-aware
+             * interrupt handler which could cause scheduling of threads.
+             */
+            atomIntEnter();
+
+            /* Call the registered ISR */
+            isr_handlers[vector](vector);
+
+            /* Call the interrupt exit routine */
+            atomIntExit(TRUE);
+        }
+        else
+        {
+            /* Unexpected vector */
+            uart_write_halt ("Unexpected IRQ vector\n");
+        }
+
+    }
+
+}
+
+
+/**
+ * \b __null_handler
+ *
+ * Handler to catch interrupts at uninitialised vectors.
+ *
+ */
+void __null_handler (void) 
+{
+    uart_write_halt ("Unhandled interrupt\n");
+}
+

ports/arm/platforms/dm36x/dm36x-io.h

@@ -0,0 +1,596 @@
+/*
+ * Copyright (c) 2013, Kelvin Lawson. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DM36X_IO_H__
+#define __DM36X_IO_H__
+
+#include "atomport.h"
+
+
+/** Timer input clock speed: 24MHz */
+#define TIMER_CLK       24000000
+
+
+/*
+ * IO Addresses for use with DM36x
+ */
+
+/** EDMA3 registers */
+#define DM36X_EDMA3_CC_BASE         0x01C00000 /* EDMA3 CC registers */
+#define DM36X_EDMA3_PARAM_BASE      0x01C04000 /* EDMA3 PaRAM base */
+#define DM36X_EDMA3_TC0_BASE        0x01C10000 /* EDMA3 TC0 registers */
+#define DM36X_EDMA3_TC1_BASE        0x01C10400 /* EDMA3 TC1 registers */
+#define DM36X_EDMA3_TC2_BASE        0x01C10800 /* EDMA3 TC2 registers */
+#define DM36X_EDMA3_TC3_BASE        0x01C10C00 /* EDMA3 TC3 registers */
+/* EDMA3 CC global register offsets */
+#define DM36X_EDMA3_DMAQNUM0        0x0240 /* Channel/queue mapping 0 */
+#define DM36X_EDMA3_DMAQNUM1        0x0244 /* Channel/queue mapping 1 */
+#define DM36X_EDMA3_DMAQNUM2        0x0248 /* Channel/queue mapping 2 */
+#define DM36X_EDMA3_DMAQNUM3        0x024C /* Channel/queue mapping 3 */
+#define DM36X_EDMA3_DMAQNUM4        0x0250 /* Channel/queue mapping 4 */
+#define DM36X_EDMA3_DMAQNUM5        0x0254 /* Channel/queue mapping 5 */
+#define DM36X_EDMA3_DMAQNUM6        0x0258 /* Channel/queue mapping 6 */
+#define DM36X_EDMA3_DMAQNUM7        0x025C /* Channel/queue mapping 7 */
+#define DM36X_EDMA3_QDMAQNUM        0x0260 /* QDMA queue mapping */
+#define DM36X_EDMA3_QUEPRI          0x0284 /* Queue Priority */
+#define DM36X_EDMA3_CC_EMR          0x0300 /* Event missed */
+#define DM36X_EDMA3_CC_EMRH         0x0304 /* Event missed high */
+#define DM36X_EDMA3_CC_EMCR         0x0308 /* Event missed clear */
+#define DM36X_EDMA3_CC_EMCRH        0x030C /* Event missed clear high */
+#define DM36X_EDMA3_CC_QEMR         0x0310 /* QDMA Event missed */
+#define DM36X_EDMA3_CC_QEMCR        0x0314 /* QDMA Event missed clear */
+#define DM36X_EDMA3_CC_CCERR        0x0318 /* EDMA3CC Error */
+#define DM36X_EDMA3_CC_CCERRCLR     0x031C /* EDMA3CC Error clear */
+#define DM36X_EDMA3_CC_EEVAL        0x0320 /* Error evaluate */
+#define DM36X_EDMA3_CC_DRAE0        0x0340 /* Shadow region enable */
+#define DM36X_EDMA3_CC_DRAEH0       0x0344 /* Shadow region enable */
+#define DM36X_EDMA3_CC_QSTAT0       0x0600 /* Queue 0 status */
+#define DM36X_EDMA3_CC_QSTAT1       0x0604 /* Queue 1 status */
+#define DM36X_EDMA3_CC_QSTAT2       0x0608 /* Queue 2 status */
+#define DM36X_EDMA3_CC_QSTAT3       0x060C /* Queue 3 status */
+#define DM36X_EDMA3_CC_CCSTAT       0x0640 /* EDMA3CC Status */
+/* EDMA3 CC global channel register offsets */
+#define DM36X_EDMA3_CC_ER           0x1000 /* Event */
+#define DM36X_EDMA3_CC_ERH          0x1004 /* Event high */
+#define DM36X_EDMA3_CC_ECR          0x1008 /* Event clear */
+#define DM36X_EDMA3_CC_ECRH         0x100C /* Event clear high */
+#define DM36X_EDMA3_CC_ESR          0x1010 /* Event set */
+#define DM36X_EDMA3_CC_ESRH         0x1014 /* Event set high */
+#define DM36X_EDMA3_CC_CER          0x1018 /* Chained event */
+#define DM36X_EDMA3_CC_CERH         0x101C /* Chained event high */
+#define DM36X_EDMA3_CC_EER          0x1020 /* Event enable */
+#define DM36X_EDMA3_CC_EERH         0x1024 /* Event enable high */
+#define DM36X_EDMA3_CC_EECR         0x1028 /* Event enable clear */
+#define DM36X_EDMA3_CC_EECRH        0x102C /* Event enable clear high */
+#define DM36X_EDMA3_CC_EESR         0x1030 /* Event enable set */
+#define DM36X_EDMA3_CC_EESRH        0x1034 /* Event enable set high */
+#define DM36X_EDMA3_CC_SER          0x1038 /* Secondary event */
+#define DM36X_EDMA3_CC_SERH         0x103C /* Secondary event high */
+#define DM36X_EDMA3_CC_SECR         0x1040 /* Secondary event clear */
+#define DM36X_EDMA3_CC_SECRH        0x1044 /* Secondary event clear high */
+#define DM36X_EDMA3_CC_IER          0x1050 /* Interrupt enable */
+#define DM36X_EDMA3_CC_IERH         0x1054 /* Interrupt enable high */
+#define DM36X_EDMA3_CC_IECR         0x1058 /* Interrupt enable clear */
+#define DM36X_EDMA3_CC_IECRH        0x105C /* Interrupt enable clear high */
+#define DM36X_EDMA3_CC_IESR         0x1060 /* Interrupt enable set */
+#define DM36X_EDMA3_CC_IESRH        0x1064 /* Interrupt enable set high */
+#define DM36X_EDMA3_CC_IPR          0x1068 /* Interrupt pending */
+#define DM36X_EDMA3_CC_IPRH         0x106C /* Interrupt pending high */
+#define DM36X_EDMA3_CC_ICR          0x1070 /* Interrupt clear */
+#define DM36X_EDMA3_CC_ICRH         0x1074 /* Interrupt clear high */
+#define DM36X_EDMA3_CC_IEVAL        0x1078 /* Interrupt evaluate */
+#define DM36X_EDMA3_CC_QER          0x1080 /* QDMA event */
+#define DM36X_EDMA3_CC_QEER         0x1084 /* QDMA event enable */
+#define DM36X_EDMA3_CC_QEECR        0x1088 /* QDMA event enable clear */
+#define DM36X_EDMA3_CC_QEESR        0x108C /* QDMA event enable set */
+#define DM36X_EDMA3_CC_QSER         0x1090 /* QDMA secondary event */
+#define DM36X_EDMA3_CC_QSECR        0x1094 /* QDMA secondary event clear */
+/* EDMA3 TC register offsets */
+#define DM36X_EDMA3_TC_TCSTAT       0x0100 /* EDMA3 TC channel status */
+#define DM36X_EDMA3_TC_ERRSTAT      0x0120 /* Error status */
+#define DM36X_EDMA3_TC_ERREN        0x0124 /* Error enable */
+#define DM36X_EDMA3_TC_ERRCLR       0x0128 /* Error clear */
+#define DM36X_EDMA3_TC_ERRDET       0x012C /* Error details */
+#define DM36X_EDMA3_TC_RDRATE       0x0140 /* Read rate */
+/* EDMA3 channel mapping */
+#define DM36X_EDMA3_CHAN_TIMER3_TEVT6         0
+#define DM36X_EDMA3_CHAN_TIMER3_TEVT7         1
+#define DM36X_EDMA3_CHAN_MCBSP_XEVT           2
+#define DM36X_EDMA3_CHAN_MCBSP_REVT           3
+#define DM36X_EDMA3_CHAN_VPSS_EVT1            4
+#define DM36X_EDMA3_CHAN_VPSS_EVT2            5
+#define DM36X_EDMA3_CHAN_VPSS_EVT3            6
+#define DM36X_EDMA3_CHAN_VPSS_EVT4            7
+#define DM36X_EDMA3_CHAN_TIMER2_TEVT4         8
+#define DM36X_EDMA3_CHAN_TIMER2_TEVT5         9
+#define DM36X_EDMA3_CHAN_SPI2XEVT             10
+#define DM36X_EDMA3_CHAN_SPI2REVT             11
+#define DM36X_EDMA3_CHAN_MJCP_IMX0INT         12
+#define DM36X_EDMA3_CHAN_MJCP_SEQINT          13
+#define DM36X_EDMA3_CHAN_SPI1XEVT             14
+#define DM36X_EDMA3_CHAN_SPI1REVT             15
+#define DM36X_EDMA3_CHAN_SPI0XEVT             16
+#define DM36X_EDMA3_CHAN_SPI0REVT             17
+#define DM36X_EDMA3_CHAN_URXEVT0              18
+#define DM36X_EDMA3_CHAN_UTXEVT0              19
+#define DM36X_EDMA3_CHAN_URXEVT1              20
+#define DM36X_EDMA3_CHAN_UTXEVT1              21
+#define DM36X_EDMA3_CHAN_TIMER4_TEVT8         22
+#define DM36X_EDMA3_CHAN_TIMER4_TEVT9         23
+#define DM36X_EDMA3_CHAN_RTOEVT               24
+#define DM36X_EDMA3_CHAN_GPINT9               25
+#define DM36X_EDMA3_CHAN_MMC0RXEVT            26
+#define DM36X_EDMA3_CHAN_MMC0TXEVT            27
+#define DM36X_EDMA3_CHAN_ICREVT               28
+#define DM36X_EDMA3_CHAN_ICXEVT               29
+#define DM36X_EDMA3_CHAN_MMC1RXEVT            30
+#define DM36X_EDMA3_CHAN_MMC1TXEVT            31
+#define DM36X_EDMA3_CHAN_GPINT0               32
+#define DM36X_EDMA3_CHAN_GPINT1               33
+#define DM36X_EDMA3_CHAN_GPINT2               34
+#define DM36X_EDMA3_CHAN_GPINT3               35
+#define DM36X_EDMA3_CHAN_GPINT4               36
+#define DM36X_EDMA3_CHAN_GPINT5               37
+#define DM36X_EDMA3_CHAN_GPINT6               38
+#define DM36X_EDMA3_CHAN_GPINT7               39
+#define DM36X_EDMA3_CHAN_GPINT10              40
+#define DM36X_EDMA3_CHAN_GPINT11              41
+#define DM36X_EDMA3_CHAN_GPINT12              42
+#define DM36X_EDMA3_CHAN_GPINT13              43
+#define DM36X_EDMA3_CHAN_GPINT14              44
+#define DM36X_EDMA3_CHAN_GPINT15              45
+#define DM36X_EDMA3_CHAN_ADINT                46
+#define DM36X_EDMA3_CHAN_GPINT8               47
+#define DM36X_EDMA3_CHAN_TIMER0_TEVT0         48
+#define DM36X_EDMA3_CHAN_TIMER0_TEVT1         49
+#define DM36X_EDMA3_CHAN_TIMER1_TEVT2         50
+#define DM36X_EDMA3_CHAN_TIMER1_TEVT3         51
+#define DM36X_EDMA3_CHAN_PWM0                 52
+#define DM36X_EDMA3_CHAN_PWM1                 53
+#define DM36X_EDMA3_CHAN_PWM2                 54
+#define DM36X_EDMA3_CHAN_PWM3                 55
+#define DM36X_EDMA3_CHAN_MJCP_VLDCINT         56
+#define DM36X_EDMA3_CHAN_MJCP_BIMINT          57
+#define DM36X_EDMA3_CHAN_MJCP_DCTINT          58
+#define DM36X_EDMA3_CHAN_MJCP_QIQINT          59
+#define DM36X_EDMA3_CHAN_MJCP_BPSINT          60
+#define DM36X_EDMA3_CHAN_MJCP_VLDCERRINT      61
+#define DM36X_EDMA3_CHAN_MJCP_RCNTINT         62
+#define DM36X_EDMA3_CHAN_MJCP_COPCINT         63
+
+
+/** System registers */
+#define DM36X_SYSTEM_BASE       0x01C40000 /* System base registers */
+#define DM36X_SYSTEM_PINMUX0        0x00
+#define DM36X_SYSTEM_PINMUX1        0x04
+#define DM36X_SYSTEM_PINMUX2        0x08
+#define DM36X_SYSTEM_PINMUX3        0x0C
+#define DM36X_SYSTEM_PINMUX4        0x10
+#define DM36X_SYSTEM_ARM_INTMUX     0x18
+#define DM36X_SYSTEM_EDMA_EVTMUX    0x1C
+#define DM36X_SYSTEM_PERICLKCTL     0x48
+#define DM36X_SYSTEM_PUPDCTL0       0x78
+#define DM36X_SYSTEM_PUPDCTL1       0x7C
+/* PINMUX0 register bitfields */
+#define DM36X_PINMUX0_MMCSD0     24
+#define DM36X_PINMUX0_GIO49      23
+#define DM36X_PINMUX0_GIO48      22
+#define DM36X_PINMUX0_GIO47      21
+#define DM36X_PINMUX0_GIO46      20
+#define DM36X_PINMUX0_GIO45      19
+#define DM36X_PINMUX0_GIO44      18
+#define DM36X_PINMUX0_GIO43      16
+#define DM36X_PINMUX0_C_WE_FIELD 14
+#define DM36X_PINMUX0_VD         13
+#define DM36X_PINMUX0_HD         12
+#define DM36X_PINMUX0_YIN0       11
+#define DM36X_PINMUX0_YIN1       10
+#define DM36X_PINMUX0_YIN2       9
+#define DM36X_PINMUX0_YIN3       8
+#define DM36X_PINMUX0_YIN4       6
+#define DM36X_PINMUX0_YIN5       4
+#define DM36X_PINMUX0_YIN6       2
+#define DM36X_PINMUX0_YIN7       0
+/* PINMUX1 register bitfields */
+#define DM36X_PINMUX1_VCLK       22
+#define DM36X_PINMUX1_EXTCLK     20
+#define DM36X_PINMUX1_FIELD      18
+#define DM36X_PINMUX1_LCD_OE     17
+#define DM36X_PINMUX1_HVSYNC     16
+#define DM36X_PINMUX1_COUT0      14
+#define DM36X_PINMUX1_COUT1      12
+#define DM36X_PINMUX1_COUT2      10
+#define DM36X_PINMUX1_COUT3      8
+#define DM36X_PINMUX1_COUT4      6
+#define DM36X_PINMUX1_COUT5      4
+#define DM36X_PINMUX1_COUT6      2
+#define DM36X_PINMUX1_COUT7      0
+/* PINMUX2 register bitfields */
+#define DM36X_PINMUX2_EM_CLK     12
+#define DM36X_PINMUX2_EM_ADV     11
+#define DM36X_PINMUX2_EM_WAIT    10
+#define DM36X_PINMUX2_EM_WE_OE   9
+#define DM36X_PINMUX2_EM_CE1     8
+#define DM36X_PINMUX2_EM_CE0     7
+#define DM36X_PINMUX2_EM_D15_8   6
+#define DM36X_PINMUX2_EM_A7      4
+#define DM36X_PINMUX2_EM_A3      2
+#define DM36X_PINMUX2_EM_AR      0
+/* PINMUX3 register bitfields */
+#define DM36X_PINMUX3_GIO26      31
+#define DM36X_PINMUX3_GIO25      29
+#define DM36X_PINMUX3_GIO24      28
+#define DM36X_PINMUX3_GIO23      26
+#define DM36X_PINMUX3_GIO22      25
+#define DM36X_PINMUX3_GIO21      23
+#define DM36X_PINMUX3_GIO20      21
+#define DM36X_PINMUX3_GIO19      20
+#define DM36X_PINMUX3_GIO18      19
+#define DM36X_PINMUX3_GIO17      17
+#define DM36X_PINMUX3_GIO16      15
+#define DM36X_PINMUX3_GIO15      14
+#define DM36X_PINMUX3_GIO14      13
+#define DM36X_PINMUX3_GIO13      12
+#define DM36X_PINMUX3_GIO12      11
+#define DM36X_PINMUX3_GIO11      10
+#define DM36X_PINMUX3_GIO10      9
+#define DM36X_PINMUX3_GIO9       8
+#define DM36X_PINMUX3_GIO8       7
+#define DM36X_PINMUX3_GIO7       6
+#define DM36X_PINMUX3_GIO6       5
+#define DM36X_PINMUX3_GIO5       4
+#define DM36X_PINMUX3_GIO4       3
+#define DM36X_PINMUX3_GIO3       2
+#define DM36X_PINMUX3_GIO2       1
+#define DM36X_PINMUX3_GIO1       0
+/* PINMUX4 register bitfields */
+#define DM36X_PINMUX4_GIO42      30
+#define DM36X_PINMUX4_GIO41      28
+#define DM36X_PINMUX4_GIO40      26
+#define DM36X_PINMUX4_GIO39      24
+#define DM36X_PINMUX4_GIO38      22
+#define DM36X_PINMUX4_GIO37      20
+#define DM36X_PINMUX4_GIO36      18
+#define DM36X_PINMUX4_GIO35      16
+#define DM36X_PINMUX4_GIO34      14
+#define DM36X_PINMUX4_GIO33      12
+#define DM36X_PINMUX4_GIO32      10
+#define DM36X_PINMUX4_GIO31      8
+#define DM36X_PINMUX4_GIO30      6
+#define DM36X_PINMUX4_GIO29      4
+#define DM36X_PINMUX4_GIO28      2
+#define DM36X_PINMUX4_GIO27      0
+
+
+/** PLL registers */
+#define DM36X_PLLC1_BASE         0x01C40800 /* PLLC1 base registers */
+#define DM36X_PLLC2_BASE         0x01C40C00 /* PLLC2 base registers */
+#define DM36X_PLLC_OCSEL         0x104
+#define DM36X_PLLC_PLLM          0x110
+#define DM36X_PLLC_PREDIV        0x114
+#define DM36X_PLLC_PLLDIV1       0x118
+#define DM36X_PLLC_PLLDIV2       0x11C
+#define DM36X_PLLC_PLLDIV3       0x120
+#define DM36X_PLLC_OSCDIV1       0x124
+#define DM36X_PLLC_POSTDIV       0x128
+#define DM36X_PLLC_CKEN          0x148
+#define DM36X_PLLC_CKSTAT        0x14C
+#define DM36X_PLLC_PLLDIV4       0x160
+#define DM36X_PLLC_PLLDIV5       0x164
+#define DM36X_PLLC_PLLDIV6       0x168
+#define DM36X_PLLC_PLLDIV7       0x16C
+#define DM36X_PLLC_PLLDIV8       0x170
+#define DM36X_PLLC_PLLDIV9       0x174
+
+
+/** Power and sleep controller registers */
+#define DM36X_PSC_BASE          0x01C41000 /* PSC registers */
+#define DM36X_PSC_EPCPR         0x070
+#define DM36X_PSC_PTCMD         0x120
+#define DM36X_PSC_PTSTAT        0x128
+#define DM36X_PSC_PDSTAT        0x200
+#define DM36X_PSC_PDCTL1        0x304
+#define DM36X_PSC_MDSTAT_BASE   0x800
+#define DM36X_PSC_MDCTL_BASE    0xA00
+#define DM36X_PSC_MOD_SPI1      6
+#define DM36X_PSC_MOD_MCBSP     8
+#define DM36X_PSC_MOD_SPI2      11
+#define DM36X_PSC_MOD_I2C       18
+#define DM36X_PSC_MOD_SPI0      22
+#define DM36X_PSC_MOD_SPI3      38
+#define DM36X_PSC_MOD_SPI4      39
+
+
+/** I2C registers */
+#define DM36X_I2C_BASE          0x01C21000 /* I2C */
+#define DM36X_I2C_ICOAR         0x00
+#define DM36X_I2C_ICIMR         0x04
+#define DM36X_I2C_ICSTR         0x08
+#define DM36X_I2C_ICCLKL        0x0C
+#define DM36X_I2C_ICCLKH        0x10
+#define DM36X_I2C_ICCNT         0x14
+#define DM36X_I2C_ICDRR         0x18
+#define DM36X_I2C_ICSAR         0x1C
+#define DM36X_I2C_ICDXR         0x20
+#define DM36X_I2C_ICMDR         0x24
+#define DM36X_I2C_ICIVR         0x28
+#define DM36X_I2C_ICEMDR        0x2C
+#define DM36X_I2C_ICPSC         0x30
+#define DM36X_I2C_REVID1        0x34
+#define DM36X_I2C_REVID2        0x38
+#define DM36X_I2C_ICPFUNC       0x48
+#define DM36X_I2C_ICPDIR        0x4C
+#define DM36X_I2C_ICPDIN        0x50
+#define DM36X_I2C_ICPDOUT       0x54
+#define DM36X_I2C_ICPDSET       0x58
+#define DM36X_I2C_ICPDCLR       0x5C
+/** Register bitfields: ICMDR */
+#define DM36X_I2C_ICMDR_NACKMOD     (1 << 15)
+#define DM36X_I2C_ICMDR_FREE        (1 << 14)
+#define DM36X_I2C_ICMDR_STT         (1 << 13)
+#define DM36X_I2C_ICMDR_STP         (1 << 11)
+#define DM36X_I2C_ICMDR_MST         (1 << 10)
+#define DM36X_I2C_ICMDR_TRX         (1 << 9)
+#define DM36X_I2C_ICMDR_XA          (1 << 8)
+#define DM36X_I2C_ICMDR_RM          (1 << 7)
+#define DM36X_I2C_ICMDR_DLB         (1 << 6)
+#define DM36X_I2C_ICMDR_IRS         (1 << 5)
+#define DM36X_I2C_ICMDR_STB         (1 << 4)
+#define DM36X_I2C_ICMDR_FDF         (1 << 3)
+#define DM36X_I2C_ICMDR_BC          (1 << 0)
+/** Register bitfields: ICSTR */
+#define DM36X_I2C_ICSTR_SDIR        (1 << 14)
+#define DM36X_I2C_ICSTR_NACKSNT     (1 << 13)
+#define DM36X_I2C_ICSTR_BB          (1 << 12)
+#define DM36X_I2C_ICSTR_RSFULL      (1 << 11)
+#define DM36X_I2C_ICSTR_XSMT        (1 << 10)
+#define DM36X_I2C_ICSTR_AAS         (1 << 9)
+#define DM36X_I2C_ICSTR_AD0         (1 << 8)
+#define DM36X_I2C_ICSTR_SCD         (1 << 5)
+#define DM36X_I2C_ICSTR_ICXRDY      (1 << 4)
+#define DM36X_I2C_ICSTR_ICRRDY      (1 << 3)
+#define DM36X_I2C_ICSTR_ARDY        (1 << 2)
+#define DM36X_I2C_ICSTR_NACK        (1 << 1)
+#define DM36X_I2C_ICSTR_AL          (1 << 0)
+
+
+/** Timer registers */
+#define DM36X_TIMER0_BASE       0x01C21400 /* TIMER0 */
+#define DM36X_TIMER1_BASE       0x01C21800 /* TIMER1 */
+#define DM36X_TIMER_PID12       0x00
+#define DM36X_TIMER_EMUMGT      0x04
+#define DM36X_TIMER_TIM12       0x10
+#define DM36X_TIMER_TIM34       0x14
+#define DM36X_TIMER_PRD12       0x18
+#define DM36X_TIMER_PRD34       0x1C
+#define DM36X_TIMER_TCR         0x20
+#define DM36X_TIMER_TGCR        0x24
+#define DM36X_TIMER_WDTCR       0x28
+#define DM36X_TIMER_REL12       0x34
+#define DM36X_TIMER_REL34       0x38
+#define DM36X_TIMER_CAP12       0x3C
+#define DM36X_TIMER_CAP34       0x40
+#define DM36X_TIMER_INTCTL_STAT 0x44
+
+
+/** Interrupt controller registers */
+#define DM36X_INTC_BASE         0x01C48000 /* Interrupt controller */
+#define DM36X_INTC_IRQ0         0x08
+#define DM36X_INTC_IRQ1         0x0C
+#define DM36X_INTC_FIQENTRY     0x10
+#define DM36X_INTC_IRQENTRY     0x14
+#define DM36X_INTC_EINT0        0x18
+#define DM36X_INTC_EINT1        0x1C
+#define DM36X_INTC_INTCTL       0x20
+#define DM36X_INTC_EABASE       0x24
+#define DM36X_INTC_PRI0         0x30
+#define DM36X_INTC_PRI1         0x34
+#define DM36X_INTC_PRI2         0x38
+#define DM36X_INTC_PRI3         0x3C
+#define DM36X_INTC_PRI4         0x40
+#define DM36X_INTC_PRI5         0x44
+#define DM36X_INTC_PRI6         0x48
+#define DM36X_INTC_PRI7         0x4C
+/** Interrupt controller vector offsets */
+#define DM36X_INTC_VEC_VPSSINT0      0
+#define DM36X_INTC_VEC_VPSSINT1      1
+#define DM36X_INTC_VEC_VPSSINT2      2
+#define DM36X_INTC_VEC_VPSSINT3      3
+#define DM36X_INTC_VEC_VPSSINT4      4
+#define DM36X_INTC_VEC_VPSSINT5      5
+#define DM36X_INTC_VEC_VPSSINT6      6
+#define DM36X_INTC_VEC_VPSSINT7      7
+#define DM36X_INTC_VEC_VPSSINT8      8
+#define DM36X_INTC_VEC_MJCP_SEQINT   9
+#define DM36X_INTC_VEC_HDVICP_INT    10
+#define DM36X_INTC_VEC_EDMA_CC_INT0  16
+#define DM36X_INTC_VEC_SPI1INT0      17
+#define DM36X_INTC_VEC_EDMA_CCERRINT 17
+#define DM36X_INTC_VEC_SPI2INT0      19
+#define DM36X_INTC_VEC_SDIO0INT      23
+#define DM36X_INTC_VEC_MMC0INT       26
+#define DM36X_INTC_VEC_MMC1INT       27
+#define DM36X_INTC_VEC_SDIO1INT      31
+#define DM36X_INTC_VEC_TINT0         32
+#define DM36X_INTC_VEC_I2CINT        39
+#define DM36X_INTC_VEC_UART0INT      40
+#define DM36X_INTC_VEC_UART1INT      41
+#define DM36X_INTC_VEC_SPI0INT0      42
+#define DM36X_INTC_VEC_SPI3INT0      43
+#define DM36X_INTC_VEC_GIO0          44
+#define DM36X_INTC_VEC_GIO1          45
+#define DM36X_INTC_VEC_GIO2          46
+#define DM36X_INTC_VEC_GIO3          47
+#define DM36X_INTC_VEC_GIO4          48
+#define DM36X_INTC_VEC_GIO5          49
+#define DM36X_INTC_VEC_GIO6          50
+#define DM36X_INTC_VEC_GIO7          51
+#define DM36X_INTC_VEC_GIO8          52
+#define DM36X_INTC_VEC_GIO9          53
+#define DM36X_INTC_VEC_GIO10         54
+#define DM36X_INTC_VEC_GIO11         55
+#define DM36X_INTC_VEC_GIO12         56
+#define DM36X_INTC_VEC_GIO13         57
+#define DM36X_INTC_VEC_GIO14         58
+#define DM36X_INTC_VEC_GIO15         59
+#define DM36X_INTC_MAX_VEC           63
+
+
+/** UART registers */
+#define DM36X_UART0_BASE        0x01C20000 /* UART0 */
+#define DM36X_UART1_BASE        0x01D06000 /* UART1 */
+
+
+/** SPI registers */
+#define DM36X_SPI0_BASE         0x01C66000 /* SPI0 */
+#define DM36X_SPI1_BASE         0x01C66800 /* SPI1 */
+#define DM36X_SPI2_BASE         0x01C67800 /* SPI2 */
+#define DM36X_SPI3_BASE         0x01C68000 /* SPI3 */
+#define DM36X_SPI4_BASE         0x01C23000 /* SPI4 */
+#define DM36X_SPI_SPIGCR0       0x00
+#define DM36X_SPI_SPIGCR1       0x04
+#define DM36X_SPI_SPIINT        0x08
+#define DM36X_SPI_SPILVL        0x0C
+#define DM36X_SPI_SPIFLG        0x10
+#define DM36X_SPI_SPIPC0        0x14
+#define DM36X_SPI_SPIPC2        0x1C
+#define DM36X_SPI_SPIDAT1       0x3C
+#define DM36X_SPI_SPIBUF        0x40
+#define DM36X_SPI_SPIEMU        0x44
+#define DM36X_SPI_SPIDELAY      0x48
+#define DM36X_SPI_SPIDEF        0x4C
+#define DM36X_SPI_SPIFMT0       0x50
+#define DM36X_SPI_INTVECT0      0x60
+#define DM36X_SPI_INTVECT1      0x64
+
+
+/** GPIO registers */
+#define DM36X_GPIO_BASE              0x01C67000
+#define DM36X_GPIO_BINTEN            0x08
+#define DM36X_GPIO_DIR01             0x10
+#define DM36X_GPIO_OUT01             0x14
+#define DM36X_GPIO_SET01             0x18
+#define DM36X_GPIO_CLR01             0x1C
+#define DM36X_GPIO_IN01              0x20
+#define DM36X_GPIO_SET_RIS_TRIG01    0x24
+#define DM36X_GPIO_CLR_RIS_TRIG01    0x28
+#define DM36X_GPIO_SET_FAL_TRIG01    0x2C
+#define DM36X_GPIO_CLR_FAL_TRIG01    0x30
+#define DM36X_GPIO_INTSTAT01         0x34
+#define DM36X_GPIO_DIR23             0x38
+#define DM36X_GPIO_OUT23             0x3C
+#define DM36X_GPIO_SET23             0x40
+#define DM36X_GPIO_CLR23             0x44
+#define DM36X_GPIO_IN23              0x48
+#define DM36X_GPIO_DIR45             0x60
+#define DM36X_GPIO_OUT45             0x64
+#define DM36X_GPIO_SET45             0x68
+#define DM36X_GPIO_CLR45             0x6C
+#define DM36X_GPIO_IN45              0x70
+#define DM36X_GPIO_DIR6              0x88
+#define DM36X_GPIO_OUT6              0x8C
+#define DM36X_GPIO_SET6              0x90
+#define DM36X_GPIO_CLR6              0x94
+#define DM36X_GPIO_IN6               0x98
+#define DM36X_GPIO_SET_RIS_TRIG6     0x9C
+#define DM36X_GPIO_CLR_RIS_TRIG6     0xA0
+#define DM36X_GPIO_SET_FAL_TRIG6     0xA4
+#define DM36X_GPIO_CLR_FAL_TRIG6     0xA8
+#define DM36X_GPIO_INTSTAT6          0xAC
+
+
+/** VPFE/VPBE registers */
+#define DM36X_ISP_BASE          0x01C70000
+#define DM36X_RSZ_BASE          0x01C70400
+#define DM36X_IPIPE_BASE        0x01C70800
+#define DM36X_ISIF_BASE         0x01C71000
+#define DM36X_IPIPEIF_BASE      0x01C71200
+#define DM36X_H3A_BASE          0x01C71400
+#define DM36X_OSD_BASE          0x01C71C00
+#define DM36X_VENC_BASE         0x01C71E00
+#define DM36x_GAMMA_R_TBL_3     0x01C7A800
+#define DM36x_GAMMA_G_TBL_3     0x01C7B000
+#define DM36x_GAMMA_B_TBL_3     0x01C7B800
+
+
+/** SD/MMC registers */
+#define DM36X_SD1_BASE      0x01D00000 /* MMC/SD1 */
+#define DM36X_SD0_BASE      0x01D11000 /* MMC/SD0 */
+#define DM36X_SD_MMCCTL     0x00
+#define DM36X_SD_MMCCLK     0x04
+#define DM36X_SD_MMCST0     0x08
+#define DM36X_SD_MMCST1     0x0C
+#define DM36X_SD_MMCIM      0x10
+#define DM36X_SD_MMCTOR     0x14
+#define DM36X_SD_MMCTOD     0x18
+#define DM36X_SD_MMCBLEN    0x1C
+#define DM36X_SD_MMCNBLK    0x20
+#define DM36X_SD_MMCNBLC    0x24
+#define DM36X_SD_MMCDRR     0x28
+#define DM36X_SD_MMCDXR     0x2C
+#define DM36X_SD_MMCCMD     0x30
+#define DM36X_SD_MMCARGHL   0x34
+#define DM36X_SD_MMCRSP01   0x38
+#define DM36X_SD_MMCRSP23   0x3C
+#define DM36X_SD_MMCRSP45   0x40
+#define DM36X_SD_MMCRSP67   0x44
+#define DM36X_SD_MMCDRSP    0x48
+#define DM36X_SD_MMCCIDX    0X50
+#define DM36X_SD_SDIOCTL    0X64
+#define DM36X_SD_SDIOST0    0X68
+#define DM36X_SD_SDIOIEN    0X6C
+#define DM36X_SD_SDIOIST    0X70
+#define DM36X_SD_MMCFIFOCTL 0x74
+
+
+/** McBSP registers */
+#define DM36X_MCBSP_BASE    0x01D02000 /* McBSP */
+#define DM36X_MCBSP_DRR     0x00
+#define DM36X_MCBSP_DXR     0x04
+#define DM36X_MCBSP_SPCR    0x08
+#define DM36X_MCBSP_RCR     0x0C
+#define DM36X_MCBSP_XCR     0x10
+#define DM36X_MCBSP_SRGR    0x14
+#define DM36X_MCBSP_MCR     0x18
+#define DM36X_MCBSP_RCERE0  0x1C
+#define DM36X_MCBSP_XCERE0  0x20
+#define DM36X_MCBSP_PCR     0x24
+#define DM36X_MCBSP_RCERE1  0x28
+#define DM36X_MCBSP_XCERE1  0x2C
+#define DM36X_MCBSP_RCERE2  0x30
+#define DM36X_MCBSP_XCERE2  0x34
+#define DM36X_MCBSP_RCERE3  0x38
+#define DM36X_MCBSP_XCERE3  0x3C
+
+
+/* Function prototypes */
+extern int              low_level_init (void) ;
+
+
+#endif /* __DM36X_IO_H__ */

ports/arm/platforms/dm36x/run_test.exp

@@ -0,0 +1,50 @@
+#!/usr/bin/env expect
+
+# Expect script to check an automated test's results via a serial port
+# and check for successful completion.
+#
+# You are expected to set the target's U-boot up to automatically load
+# the app on your TFTP server called "test.bin". Before this script is
+# started the Makefile should have copied the next test binary to the
+# file "test.bin" in your TFTP root folder. The user must sit and
+# hit the reset button after every test completion in order to make
+# the board load and run the next test.bin file.
+#
+# Arguments: <serial_port_device> <baudrate> <test_bin_file>
+#
+# Returns 0 on successful test run, 1 on failure
+
+# Set the serial port baudrate
+stty [lindex $argv 1] < [lindex $argv 0]
+
+# Start the test
+spawn cat [lindex $argv 0]
+puts "Ready: reset the target!"
+
+# Expect to see the test starting within 60 seconds (give long enough
+# for user to reset the board after running the last test).
+set timeout 60
+
+# Wait for the test to start ("Go")
+expect {
+	"Go\r" {
+		puts "Test started"
+
+		# The test could take up to 3 minutes to complete once started
+		set timeout 180
+
+		# Now expect to see "Pass" or "Fail" within 3 minutes
+		expect {
+			"Pass\r" { puts "Test passed"; exit 0 }
+			"Fail\r" { puts "Test failed"; exit 1 }
+			timeout { puts "Test timed out without completing"; exit 1 }
+		}
+	}
+
+	timeout {
+		# Didn't receive "Go" within 10 seconds
+		puts "Test failed to start ('Go' not seen)"
+		exit 1
+	}
+}
+

ports/arm/platforms/dm36x/startup.s

@@ -0,0 +1,88 @@
+.section .vectors, "x"
+
+.global __interrupt_vector_table
+.extern __irq_stack_top__
+.extern __fiq_stack_top__
+.extern __svc_stack_top__
+
+.extern __null_handler 
+
+
+.equ USR_MODE,            0x10
+.equ FIQ_MODE,            0x11
+.equ IRQ_MODE,            0x12
+.equ SVC_MODE,            0x13
+.equ ABT_MODE,            0x17
+.equ UND_MODE,            0x1B
+.equ SYS_MODE,            0x1F
+
+.equ I_BIT,               0x80            /* when I bit is set, IRQ is disabled */
+.equ F_BIT,               0x40            /* when F bit is set, FIQ is disabled */
+
+
+__interrupt_vector_table:
+
+  B Reset_Handler /* Reset */
+  ldr PC,=Exception_Handler  /* Undefined */
+  ldr PC,=Exception_Handler  /* SWI */
+  ldr PC,=Exception_Handler  /* Prefetch Abort */
+  ldr PC,=Exception_Handler  /* Data Abort */
+  ldr PC,=Exception_Handler  /* reserved */
+  ldr PC,=archIRQHandler/* IRQ */
+  ldr PC,=Exception_Handler  /* FIQ */
+ 
+
+Reset_Handler:
+
+    MSR CPSR_c,#(IRQ_MODE | I_BIT | F_BIT)
+    LDR sp,=__irq_stack_top__ /* set the IRQ stack pointer */
+    MSR CPSR_c,#(FIQ_MODE | I_BIT | F_BIT)
+    LDR sp,=__fiq_stack_top__ /* set the FIQ stack pointer */
+    MSR CPSR_c,#(SVC_MODE | I_BIT | F_BIT)
+    LDR sp,=__svc_stack_top__ /* set the SVC stack pointer */
+
+    BL low_level_init
+    BL _mainCRTStartup
+
+/**
+ *  \b Exception_Handler
+ *
+ *  IRQ entry point.
+ *
+ *  Save the process/thread context onto its own stack before calling __interrupt_dispatcher().
+ *  __interrupt_dispatcher() might switch stacks. On return the same context is popped from the 
+ *  stack and control is returned to the process.
+ *
+ *  @return None
+ */
+Exception_Handler:
+
+    MSR         cpsr_c, #(SVC_MODE | I_BIT)     /* Save current process context in process stack */
+    STMFD       sp!, {r0 - r3, ip, lr}          
+                                                
+    MSR         cpsr_c, #(IRQ_MODE | I_BIT)     /* Save lr_irq and spsr_irq in process stack */
+    SUB         lr, lr, #4                      
+    MOV         r1, lr                          
+    MRS         r2, spsr                        
+    MSR         cpsr_c, #(SVC_MODE | I_BIT)     
+    STMFD       sp!, {r1, r2}                   
+                                                
+    BL          __null_handler          /* Dispatch the interrupt to platform folder for
+                                                   the timer tick interrupt or a simular function
+                                                   for other interrupts. Some of those IRQs may
+                                                   call Atomthreads kernel routines and cause a
+                                                   thread switch. */
+
+    LDMFD       sp!, {r1, r2}                   /* Restore lr_irq and spsr_irq from process stack */
+    MSR         cpsr_c, #(IRQ_MODE | I_BIT)     
+    STMFD       sp!, {r1}                       
+    MSR         spsr_cxsf, r2                   
+                                                
+    MSR         cpsr_c, #(SVC_MODE | I_BIT)     /* Restore process regs */
+    LDMFD       sp!, {r0 - r3, ip, lr}          
+                                                
+    MSR         cpsr_c, #(IRQ_MODE | I_BIT)     /* Exit from IRQ */
+    LDMFD       sp!, {pc}^
+
+  B .
+

ports/arm/platforms/dm36x/system.ld

@@ -0,0 +1,87 @@
+
+ENTRY(__interrupt_vector_table)
+
+
+MEMORY
+{
+    sram (rwx) : ORIGIN = 0x80000000, LENGTH = 0x08000000
+}
+
+
+EXTERN(__interrupt_vector_table);
+
+
+C_STACK_SIZE = 4096;
+IRQ_STACK_SIZE = 4096;
+FIQ_STACK_SIZE = 2048;
+SVC_STACK_SIZE = 4096;
+ABT_STACK_SIZE = 2048;
+UND_STACK_SIZE = 2048;
+
+SECTIONS
+{
+
+    
+    .text :
+    {
+        _start_vectors = .;
+        *(.vectors)
+        _end_vectors = .;
+        /* Startup assembly */
+        *(.startup)
+        *(.init)
+
+        /* Rest of the code (C) */
+        *(.text)
+        *(.rodata)
+        *(.rodata*)
+
+        _end_text = .;
+
+        _start_data = .;
+        *(.data)
+        _end_data = .;
+    } >sram
+
+    .bss :
+    {
+        _start_bss = .;
+        __bss_start__ = . ;
+        *(.bss)
+    } >sram
+
+    . = ALIGN(4);
+    _end_bss = .;
+    __bss_end__ = . ;
+
+    . = ALIGN(256);
+    
+    .stack : {
+    __stack_start__ = . ;
+    . += IRQ_STACK_SIZE;
+    . = ALIGN (4);
+    __irq_stack_top__ = . ;
+    . += FIQ_STACK_SIZE;
+    . = ALIGN (4);
+    __fiq_stack_top__ = . ;
+    . += SVC_STACK_SIZE;
+    . = ALIGN (4);
+    __svc_stack_top__ = . ;
+    . += ABT_STACK_SIZE;
+    . = ALIGN (4);
+    __abt_stack_top__ = . ;
+    . += UND_STACK_SIZE;
+    . = ALIGN (4);
+    __und_stack_top__ = . ;
+    . += C_STACK_SIZE;
+    . = ALIGN (4);
+    __c_stack_top__ = . ;
+    __stack_end__ = .;
+    } >sram 
+
+}
+__end__ = .;
+_end = .;
+PROVIDE(end = .);
+
+heap_top = ORIGIN(sram) + LENGTH(sram) - 4;

ports/arm/platforms/dm36x/timer.c

@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 2013, Kelvin Lawson. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/** 
+ * \file
+ * Driver for accurate high-speed hardware timers.
+ *
+ * Uses the TIMER1 hardware module of DM36x.
+ */
+
+#include "atom.h"
+#include "atomport.h"
+#include "dm36x-io.h"
+
+
+/* Constants */
+
+/** Register access macros: using TIMER1 */
+#define TIMER_REG(offset)      *(volatile uint32_t *)(DM36X_TIMER1_BASE + offset)
+
+
+/* Local data */
+
+/*
+ * Initialised flag
+ */
+static int initialised = FALSE;
+
+
+/* Forward declarations */
+static int timer_init (void);
+
+
+/**
+ * \b timer_init
+ *
+ * Initialisation of TIMER1 hardware.
+ *
+ * @retval ATOM_OK Success
+ * @retval ATOM_ERROR Failed
+ */
+static int timer_init (void)
+{
+    int status;
+
+    /* Check we are not already initialised */
+    if (initialised == FALSE)
+    {
+        /* Initialise TIMER1 registers for free-running high-speed 24MHz timer */
+
+        /* Reset & disable all TIMER1 timers */
+        TIMER_REG(DM36X_TIMER_INTCTL_STAT) = 0;    /* Disable interrupts */
+        TIMER_REG(DM36X_TIMER_TCR) = 0;            /* Disable all TIMER1 timers */
+        TIMER_REG(DM36X_TIMER_TGCR) = 0;           /* Put all TIMER1 timers in reset */
+        TIMER_REG(DM36X_TIMER_TIM12) = 0;          /* Clear Timer 1:2 */
+
+        /* Set up Timer 1:2 in 32-bit unchained mode */
+        TIMER_REG(DM36X_TIMER_TGCR) = (1 << 2);    /* Select 32-bit unchained mode (TIMMODE) */
+        TIMER_REG(DM36X_TIMER_TGCR) |= (1 << 0);   /* Remove Timer 1:2 from reset (TIM12RS) */
+        TIMER_REG(DM36X_TIMER_PRD12) = ~0;         /* Set period to free-running 24MHz clock (PRD12) */
+        TIMER_REG(DM36X_TIMER_TCR) |= (0 << 8);    /* Select external clock source for Timer 1:2 (CLKSRC12) */
+
+        /* Enable timer */
+        TIMER_REG(DM36X_TIMER_TCR) |= (2 << 6);    /* Enable Timer 1:2 continuous (ENAMODE12) */
+
+        /* Success */
+        initialised = TRUE;
+        status = ATOM_OK;
+    }
+
+    /* Already initialised */
+    else
+    {
+        /* Success */
+        status = ATOM_OK;
+    }
+
+    /* Finished */
+    return (status);
+}
+
+
+/**
+ * \b archUsleep
+ *
+ * Simple spin loop of at least the specified microseconds.
+ *
+ * @param[in] microsecs Number of microseconds to sleep
+ *
+ * @return None
+ *
+ */
+void archUsleep (int32_t microsecs)
+{
+    int32_t start_time, delay_timer_ticks;
+
+    /* Check we are initialised */
+    if (initialised == FALSE)
+    {
+        timer_init();
+    }
+
+    /* Get the current 24MHz count */
+    start_time = TIMER_REG(DM36X_TIMER_TIM12);
+
+    /* Translate delay in usecs to delay in 24MHz ticks */
+    delay_timer_ticks = ((TIMER_CLK / 1000000) * microsecs);
+
+    /* Wait in a spin-loop for timer to expire */
+    while (((int32_t)TIMER_REG(DM36X_TIMER_TIM12) - start_time) < delay_timer_ticks)
+        ;
+}
+
+
+/**
+ * \b archUsleepStart
+ *
+ * Start a usleep timer session.
+ *
+ * @retval Start time for use in subsequent archUsleepCheckExpired() calls
+ *
+ */
+int32_t archUsleepStart (void)
+{
+    /* Check we are initialised */
+    if (initialised == FALSE)
+    {
+        timer_init();
+    }
+
+    /* Return the current 24MHz count */
+    return (TIMER_REG(DM36X_TIMER_TIM12));
+}
+
+
+/**
+ * \b archUsleepCheckExpired
+ *
+ * Test whether a usleep timer session has expired.
+ *
+ * @param[in] start_time Beginning of timer expiry check session (returned by archUsleepStart())
+ * @param[in] delay_usecs Number of microsecs to check have expired after start_timE
+ *
+ * @retval 1=Timer expired, 0=Not expired
+ *
+ */
+int archUsleepCheckExpired (int32_t start_time, int32_t delay_usecs)
+{
+    int32_t delay_timer_ticks;
+	int status;
+
+    /* Translate delay in usecs to delay in 24MHz ticks */
+    delay_timer_ticks = ((TIMER_CLK / 1000000) * delay_usecs);
+
+    /* Check if timer has expired */
+	status = (((int32_t)TIMER_REG(DM36X_TIMER_TIM12) - start_time) < delay_timer_ticks) ? 0 : 1;
+	return (status);
+}
+
+
+/**
+ * \b archUsecStart
+ *
+ * Start a usec timer session for use with archUsecDiff() layer.
+ *
+ * @retval Start time for use in subsequent archUsecDiff() calls
+ *
+ */
+int32_t archUsecStart (void)
+{
+    /* Check we are initialised */
+    if (initialised == FALSE)
+    {
+        timer_init();
+    }
+
+    /* Return the current 24MHz count */
+    return (TIMER_REG(DM36X_TIMER_TIM12));
+}
+
+
+/**
+ * \b archUsecDiff
+ *
+ * Calculate the usecs that have expired since the passed "start_time".
+ *
+ * The 24MHz timer rolls over every 178 seconds. The use of a signed
+ * integer means that this cannot be used to measure periods over 89 seconds.
+ *
+ * @param[in] start_time Beginning of time difference session (returned by archUsecStart())
+ *
+ * @retval Number of microseconds expired since start_time
+ *
+ */
+int32_t archUsecDiff (int32_t start_time)
+{
+    /* Translate diff in 24MHz ticks to usecs */
+	return (((int32_t)TIMER_REG(DM36X_TIMER_TIM12) - start_time) / (TIMER_CLK / 1000000));
+}

ports/arm/platforms/dm36x/uart.c

@@ -0,0 +1,333 @@
+/*
+ * Copyright (c) 2013, Kelvin Lawson. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/** 
+ * \file
+ * Simple polled UART implementation for non-hosted compiler toolchains.
+ *
+ *
+ * This is only required for non-hosted toolchains which don't implement
+ * stdout automatically for use within QEMU.
+ */
+
+#include "atom.h"
+#include "atommutex.h"
+#include "atomport.h"
+#include "dm36x-io.h"
+#include "uart.h"
+
+
+/* Constants */
+
+/** Baudrate */
+#define BAUDRATE         115200
+ 
+/** Select relevant UART for this platform */
+#define UART_BASE        DM36X_UART0_BASE
+
+/** FR Register bits */
+#define UART_FR_RXFE     0x10
+#define UART_LSR_TEMT    0x40
+
+/** UART register access macros */
+#define UART_RBR(baseaddr) (*(unsigned int *)(baseaddr))
+#define UART_THR(baseaddr) (*(unsigned int *)(baseaddr))
+#define UART_IER(baseaddr) (*(((unsigned int *)(baseaddr + 0x04))))
+#define UART_FCR(baseaddr) (*(((unsigned int *)(baseaddr + 0x08))))
+#define UART_LCR(baseaddr) (*(((unsigned int *)(baseaddr + 0x0C))))
+#define UART_MCR(baseaddr) (*(((unsigned int *)(baseaddr + 0x10))))
+#define UART_LSR(baseaddr) (*(((unsigned int *)(baseaddr + 0x14))))
+#define UART_DLL(baseaddr) (*(((unsigned int *)(baseaddr + 0x20))))
+#define UART_DLH(baseaddr) (*(((unsigned int *)(baseaddr + 0x24))))
+#define UART_PWR(baseaddr) (*(((unsigned int *)(baseaddr + 0x30))))
+
+
+/* Local data */
+
+/*
+ * Semaphore for single-threaded access to UART device
+ */
+static ATOM_MUTEX uart_mutex;
+
+/*
+ * Initialised flag
+ */
+static int initialised = FALSE;
+
+
+/* Forward declarations */
+static int uart_init (void);
+static void uart_write_char (const char c);
+
+
+/**
+ * \b uart_init
+ *
+ * Initialisation of UART driver. Creates a mutex that enforces
+ * single-threaded access to the UART. We poll register bits
+ * to check when space is available, which would not otherwise
+ * be thread-safe.
+ *
+ * @retval ATOM_OK Success
+ * @retval ATOM_ERROR Failed to create mutex
+ */
+static int uart_init (void)
+{
+    int status;
+    uint32_t dummy;
+    uint32_t divisor;
+
+    /* Check we are not already initialised */
+    if (initialised == FALSE)
+    {
+        /* Create a mutex for single-threaded UART access */
+        if (atomMutexCreate (&uart_mutex) != ATOM_OK)
+        {
+            /* Mutex creation failed */
+            status = ATOM_ERROR;
+        }
+        else
+        {
+            /* Reset Tx/Rx in PWREMU_MGMT */
+            UART_PWR(UART_BASE) = 0x0;
+
+            /* Set baudrate */
+            divisor = (TIMER_CLK / BAUDRATE) / 16;
+            UART_DLL(UART_BASE) = (divisor & 0xFF);
+            UART_DLH(UART_BASE) = (divisor >> 8);
+
+            /* Clear Tx/Rx FIFOs and enter non-FIFO mode */
+            UART_FCR(UART_BASE) = 0x7;
+            UART_FCR(UART_BASE) = 0x0;
+
+            /* Set 8N1 */
+            UART_LCR(UART_BASE) = 0x3;
+
+            /* Disable loopback, flow-control, RTS/CTS */
+            UART_MCR(UART_BASE) = 0x0;
+
+            /* Disable interrupts */
+            UART_IER(UART_BASE) = 0x0;
+
+            /* Take Tx/Rx out of reset in PWREMU_MGMT */
+            UART_PWR(UART_BASE) = 0xE001;
+
+            /* Clear any receive characters */
+            dummy = UART_RBR(UART_BASE);
+
+            /* Success */
+            initialised = TRUE;
+            status = ATOM_OK;
+        }
+    }
+
+    /* Already initialised */
+    else
+    {
+        /* Success */
+        status = ATOM_OK;
+    }
+
+    /* Finished */
+    return (status);
+}
+
+
+/**
+ * \b uart_read
+ *
+ * Simple polled UART read.
+ *
+ * @param[in] ptr Pointer to receive buffer
+ * @param[in] len Max bytes to read
+ *
+ * @retval Number of bytes read
+ *
+ */
+int uart_read (char *ptr, int len)
+{
+    int todo = 0;
+
+    /* Check we are initialised */
+    if (initialised == FALSE)
+    {
+        uart_init();
+    }
+
+    /* Check parameters */
+    if ((ptr == NULL) || (len == 0))
+    {
+        return 0;
+    }
+
+    /* Block thread on private access to the UART */
+    if (atomOSStarted && atomMutexGet(&uart_mutex, 0) == ATOM_OK)
+    {
+#if 0
+        /* Wait for not-empty */
+        while(UART_FR(UART_BASE) & UART_FR_RXFE)
+            ;
+
+        /* Read first byte */
+        *ptr++ = UART_RBR(UART_BASE);
+
+        /* Loop over remaining bytes until empty */
+        for (todo = 1; todo < len; todo++)
+        {
+            /* Quit if receive FIFO empty */
+            if(UART_FR(UART_BASE) & UART_FR_RXFE)
+            {
+                break;
+            }
+
+            /* Read next byte */
+            *ptr++ = UART_RBR(UART_BASE);
+        }
+#endif
+
+        /* Return mutex access */
+        if (atomOSStarted)
+        {
+            atomMutexPut(&uart_mutex);
+        }
+    }
+
+    /* Return number of bytes read */
+    return todo;
+}
+
+
+/**
+ * \b uart_write
+ *
+ * Simple polled UART write.
+ *
+ * @param[in] ptr Pointer to write buffer
+ * @param[in] len Number of bytes to write
+ *
+ * @retval Number of bytes written
+ */
+int uart_write (const char *ptr, int len)
+{
+    int todo;
+
+    /* Check we are initialised */
+    if (initialised == FALSE)
+    {
+        uart_init();
+    }
+
+    /* Check parameters */
+    if ((ptr == NULL) || (len == 0))
+    {
+        return 0;
+    }
+
+    /* Block thread on private access to the UART unless at interrupt context */
+    if (atomOSStarted && ((atomCurrentContext() == NULL) || (atomMutexGet(&uart_mutex, 0) == ATOM_OK)))
+    {
+        /* Loop through all bytes to write */
+        for (todo = 0; todo < len; todo++)
+        {
+            /* Convert \n to \r\n */
+            if (*ptr == '\n')
+                uart_write_char('\r');
+
+            /* Write byte to UART */
+            uart_write_char(*ptr++);
+        }
+
+        /* Return mutex access if not at interrupt context */
+        if (atomOSStarted && (atomCurrentContext() != NULL))
+        {
+            atomMutexPut(&uart_mutex);
+        }
+    }
+
+    /* Return bytes-written count */
+    return len;
+}
+
+
+/**
+ * \b uart_write_halt
+ *
+ * Simple polled UART write for handling critical failures
+ * by printing out a message on the UART and looping forever.
+ * Can be called from interrupt (unlike the standard
+ * uart_write()) but is not thread-safe because it cannot
+ * take the thread-safety mutex, and hence is only useful for
+ * a last-resort catastrophic debug message.
+ *
+ * @param[in] ptr Pointer to write string
+ */
+void uart_write_halt (const char *ptr)
+{
+    /* Check parameters */
+    if (ptr != NULL)
+    {
+        /* Loop through all bytes until NULL terminator encountered */
+        while (*ptr != '\0')
+        {
+            /* Convert \n to \r\n */
+            if (*ptr == '\n')
+                uart_write_char('\r');
+
+            /* Write byte to UART */
+            uart_write_char(*ptr++);
+        }
+    }
+
+    /* Loop forever */
+    while (1)
+        ;
+
+}
+
+
+/**
+ * \b uart_putchar
+ *
+ * Simple polled UART write char.
+ *
+ * Assumes that the mutex has already been taken, or
+ * is not expected to be taken (e.g. on interrupt).
+ *
+ * @param[in] c Char to write
+ */
+static void uart_write_char (const char c)
+{
+    /* Wait for empty */
+    while ((UART_LSR(UART_BASE) & UART_LSR_TEMT) != UART_LSR_TEMT)
+        ;
+
+    /* Write byte to UART */
+    UART_THR(UART_BASE) = (c & 0xFF);
+}

ports/arm/platforms/dm36x/uart.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
+ * Copyright (c) 2013, Kelvin Lawson. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -27,15 +27,12 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef __ATOM_PORT_PRIVATE_H__
-#define __ATOM_PORT_PRIVATE_H__
+#ifndef __ATOM_UART_H
+#define __ATOM_UART_H
 
+/* UART driver APIs */
+extern int uart_read (char *ptr, int len);
+extern int uart_write (const char *ptr, int len);
+extern void uart_write_halt (const char *ptr);
 
-/* Function prototypes */
-extern void    archPendSVHandler (void) ;
-extern void    archTickHandler (void) ;
-
-/* required interface */
-extern void     __context_tick_handler (void) ;
-
-#endif /* __ATOM_PORT_PRIVATE_H__ */
+#endif /* __ATOM_UART_H */

ports/arm/platforms/qemu_integratorcp/Makefile

@@ -14,6 +14,7 @@ TESTS_DIR=../../../../tests
 PORT_DIR=../..
 CC=arm-none-eabi-gcc
 OBJCOPY=arm-none-eabi-objcopy
+ARCHIVE=arm-none-eabi-ar
 QEMU=qemu-system-arm
 
 # Enable stack-checking.
@@ -71,6 +72,10 @@ endif
 # All tests
 all: $(BUILD_DIR) $(TEST_ELFS) Makefile
 
+# Build archive for linking with external application
+libatomthreads.a: $(BUILD_DIR) $(ALL_OBJECTS) Makefile
+	$(ARCHIVE) cr $(BUILD_DIR)/$@ $(BUILT_OBJECTS)
+
 # Make build/output directory
 $(BUILD_DIR):
 	mkdir $(BUILD_DIR)
@@ -121,7 +126,7 @@ doxygen:
 	doxygen ../../Doxyfile
 	doxygen ./Doxyfile
 
-# Run tests within simavr simulator
+# Run tests within QEMU simulator
 phony_qemu_elfs = $(addsuffix .sim, $(TEST_ELFS))
 qemutests: $(phony_qemu_elfs)
 .PHONY: qemutests $(phony_qemu_elfs)

ports/arm/platforms/qemu_integratorcp/README

@@ -13,6 +13,11 @@ The "qemu_integratorcp" platform folder contains sources for building a
 sample Atomthreads application for the ARM Integrator/CP (ARM926EJ-S)
 platform running under QEMU.
 
+
+---------------------------------------------------------------------------
+
+SOURCE LAYOUT
+
 All of the cross-platform kernel code is contained in the top-level 
 'kernel' folder, while ports to specific CPU architectures are contained in
 the 'ports' folder tree. To support multiple ARM boards/platforms using a

ports/arm/platforms/qemu_integratorcp/startup.s

@@ -21,13 +21,13 @@
 __interrupt_vector_table:
 
   B Reset_Handler /* Reset */
-  B Null_Handler  /* Undefined */
-  B Null_Handler  /* SWI */
-  B Null_Handler  /* Prefetch Abort */
-  B Null_Handler  /* Data Abort */
-  B Null_Handler  /* reserved */
-  B IRQ_Handler   /* IRQ */
-  B Null_Handler  /* FIQ */
+  ldr PC,=null_handler  /* Undefined */
+  ldr PC,=null_handler  /* SWI */
+  ldr PC,=null_handler  /* Prefetch Abort */
+  ldr PC,=null_handler  /* Data Abort */
+  ldr PC,=null_handler  /* reserved */
+  ldr PC,=archIRQHandler/* IRQ */
+  ldr PC,=null_handler  /* FIQ */
  
 
 Reset_Handler:
@@ -45,10 +45,3 @@ Reset_Handler:
 
   B .
 
-
-IRQ_Handler:
-    B archIRQHandler
-
-
-Null_Handler:
-    B null_handler

ports/arm/platforms/qemu_integratorcp/uart.c

@@ -106,6 +106,13 @@ static int uart_init (void)
         }
     }
 
+    /* Already initialised */
+    else
+    {
+        /* Success */
+        status = ATOM_OK;
+    }
+
     /* Finished */
     return (status);
 }

ports/arm/syscalls.c

@@ -65,6 +65,7 @@ extern int _open(const char *name, int flags, int mode) __attribute__((weak));
 extern int _read(int file, char *ptr, int len) __attribute__((weak));
 extern caddr_t _sbrk(int incr) __attribute__((weak));
 extern int _write(int file, char *ptr, int len) __attribute__((weak));
+extern int _exit(int val) __attribute__((weak));
 
 
 /**
@@ -75,7 +76,7 @@ extern int _write(int file, char *ptr, int len) __attribute__((weak));
  */
 int _close(int file)
 {
-    return -1;
+    return 0;
 }
 
 
@@ -122,10 +123,17 @@ int _lseek(int file, int ptr, int dir)
  *
  * Simple stub implementation with no file table. All parameters ignored.
  *
+ * We only support reading/writing to the UART, so we don't bother inspecting
+ * the filename to decide which underlying device to use, _read() and _write()
+ * only access the UART driver.
+ *
+ * This is currently only called once (each thread opens its own stdout when
+ * it starts executing).
+ *
  */
 int _open(const char *name, int flags, int mode)
 {
-    return -1;
+    return 0;
 }
 
 
@@ -209,3 +217,14 @@ caddr_t _sbrk(int incr)
     return (caddr_t)prev_heap_end;
 }
 
+/**
+ * \b _exit
+ *
+ * Simple stub implementation, exit() not needed or implemented.
+ *
+ */
+int _exit(int val)
+{
+	return -1;
+}
+

ports/atomvm/README

@@ -1,40 +0,0 @@
----------------------------------------------------------------------------
-
-Library:      Atomvn
-Author:       Natie van Rooyen <natie@navaro.nl>
-License:      BSD Revised
-
----------------------------------------------------------------------------
-
-Atomvm is a tiny virtual machine that runs on Windows and can be debugged 
-from an IDE like Microsoft Visual C++ Express. The primary purpose of this 
-virtual machine is for the evaluation of Real Time Operating Systems like 
-Atomthreads and the development and testing of programs for it on a Windows 
-machine.
-
-Atomvm makes use of the Windows API functions GetThreadContext() and 
-SetThreadContext() to create multiple virtual contexts or threads inside a 
-single Windows thread. Atomvm also simulates interrupts with an interrupt 
-mask accessible from the Atomvm threads. External events can be queued as 
-interrupts to Atomvm, for example a timer loop generating system timer tick 
-interrupts for a Real Time Operating System ported to Atomvm.
-
----------------------------------------------------------------------------
-
-BUILDING THE SOURCE
-
-To test this project, just add all the files from the "atomthreads/kernel" 
-directory and the "atomthreads/ports/atomvm" directory as well as the test 
-program "atomthreads/ports/atomvm/test/main.c" to your project. Add both the 
-before mentioned directories to the include paths of your project and compile.
-
-Atomvm was designed for multi core systems but also runs fine on any single 
-core system.
-
----------------------------------------------------------------------------
-
-RUNNING THE TESTS
-
-The test, main.c, is intentioned to stress the virtual  machine.
-
-

ports/atomvm/README.txt

@@ -1,36 +0,0 @@
----------------------------------------------------------------------------
-
-Library:      Atomvn
-Author:       Natie van Rooyen <natie@navaro.nl>
-License:      BSD Revised
-
----------------------------------------------------------------------------
-
-Atomvm is a tiny virtual machine that can run on Windows inside an IDE with a 
-debugger like Microsoft Visual C++ Express. The primary purpose of this virtual 
-machine is for the evaluation of Real Time Operating Systems (like atomthreads) 
-and the development and testing of modules for this Real Time Operating System
-in a user friendly environment.
-
----------------------------------------------------------------------------
-
-BUILDING THE SOURCE
-
-To test this project, just add all the files from the "atomthreads/kernel" 
-directory and the "atomthreads/ports/atomvm" directory as well as the test 
-program "atomthreads/ports/atomvm/test/main.c" to your project. Add both the 
-before mentioned directories to the include paths of your project and compile.
-
-Atomvm was designed for multi core systems but also runs fine on any single 
-core system.
-
----------------------------------------------------------------------------
-
-RUNNING THE TESTS
-
-The test, main.c, is intentioned to stress the virtual  machine as opposed to 
-testing the Real Time Operating System. However, this test can also run the 
-unit tests of atomthreads by using the preprocessor directive "UNIT_TESTS" and 
-linking in the desired unit test into the project.
-
-

ports/atomvm/atomport.c

@@ -1,159 +0,0 @@
-/*
- * Copyright (c) 2010, Kelvin Lawson. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#include "atom.h"
-#include "atomport.h"
-#include "atomvm.h"
-#include "windows.h"
-
-/** Forward declarations */
-DWORD WINAPI cntrl_thread_proc (LPVOID lpParameter) ;
-
-/* Global data */
-HATOMVM the_atomvm ;
-
-/* Local data */
-static HANDLE cntrl_thread ;
-
-
-/**
- * \b atomvmRun
- *
- * Starts the atom vm. atomvmRun creates a thread from where the atomvmCtrlRun function
- * will be called. atomvmCtrlRun never returns and this thread becomes the controll
- * thread of the vm.
- *
- */
-void 
-atomvmRun (void)
-{
-	atomvmCtrlCreate (&the_atomvm) ;
-	cntrl_thread = CreateThread (NULL, 0, cntrl_thread_proc, (uint32_t*)the_atomvm, CREATE_SUSPENDED, NULL) ;
-	ResumeThread (cntrl_thread) ;
-}
-
-DWORD WINAPI 
-cntrl_thread_proc (LPVOID lpParameter)
- {
-	atomvmCtrlRun ((HATOMVM)lpParameter, 0) ;
-	return 0 ;
- }
-
-
-/**
- * \b thread_shell
- *
- * Documented in atomThreads.
- *
- */
-void 
-thread_shell (uint32_t arg)
-{
-    ATOM_TCB *curr_tcb;
-
-    /* Get the TCB of the thread being started */
-    curr_tcb = atomCurrentContext();
-
-    /**
-     * Enable interrupts - these will not be enabled when a thread
-     * is first restored.
-     */
-    // sei();
-	//atomvmExitCritical () ;
-    atomvmInterruptMask (0) ;
-
-    /* Call the thread entry point */
-    if (curr_tcb && curr_tcb->entry_point)
-    {
-        curr_tcb->entry_point(curr_tcb->entry_param);
-    }
-
-    /* Not reached - threads should never return from the entry point */
-}
-
-
-/**
- * \b archThreadContextInit
- *
- * Documented in atomThreads.
- *
- */
-void 
-archThreadContextInit (ATOM_TCB *tcb_ptr, void *stack_top, void (*entry_point)(uint32_t), uint32_t entry_param)
-{
-    tcb_ptr->sp_save_ptr = stack_top;
-	tcb_ptr->entry_param = entry_param ;
-	tcb_ptr->entry_point = entry_point ;
-
-	tcb_ptr->context = atomvmContextCreate (1) ;
-	atomvmContextInit (tcb_ptr->context, (unsigned int *)stack_top, thread_shell, entry_param, 0) ;
-}
-
-
-/**
- * \b archFirstThreadRestore
- *
- * Documented in atomThreads.
- *
- */
-void 
-archFirstThreadRestore(ATOM_TCB * p_sp_new)
-{
-	atomvmContextSwitch (0, p_sp_new->context) ;
-}
- 
-
-/**
- * \b archContextSwitch
- *
- * Documented in atomThreads.
- *
- */
-void
-archContextSwitch (ATOM_TCB * p_sp_old, ATOM_TCB * p_sp_new)
-{
-    atomvmContextSwitch (p_sp_old->context, p_sp_new->context) ;
-}
-
-
-/**
- * \b archTimerTickIrqHandler
- *
- * System timer tick interrupt handler.
- *
- */
-void archTimerTickIrqHandler (void)
-{
-    atomIntEnter();
-
-    /* Call the OS system tick handler */
-    atomTimerTick();
-
-	/* Call the interrupt exit routine */
-    atomIntExit(TRUE);
-}

ports/atomvm/atomport.h

@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef __ATOM_PORT_H__
-#define __ATOM_PORT_H__
-
-#include "atomvm.h"
-
-#define SYSTEM_TICKS_PER_SEC            100
-/* Size of each stack entry / stack alignment size (e.g. 32 bits) */
-#define STACK_ALIGN_SIZE        sizeof(unsigned int)
-
-/**
- * Architecture-specific types.
- * Most of these are available from stdint.h on this platform, which is
- * included above.
- */
-#define POINTER				void *
-#define ATOM_TLS			HATOMVM_CONTEXT	context ;
-
- 
-/* Critical region protection */
-#define CRITICAL_STORE		unsigned int __atom_int_mask
-#define CRITICAL_START()	 __atom_int_mask = atomvmInterruptMask(1)
-#define CRITICAL_END()		 atomvmInterruptMask(__atom_int_mask)
-
-#define ATOM_TLS			HATOMVM_CONTEXT	context ;
-
-/* Function prototypes */
-extern void					atomvmRun (void) ;
-extern void					archTimerTickIrqHandler (void) ;
-
-/* The instance of the atomvm for this port */
-extern HATOMVM				the_atomvm  ;
-
-#endif /* __ATOM_PORT_H__ */

ports/atomvm/atomuser.h

@@ -1,63 +0,0 @@
-/*
- * Copyright (c) 2010,Kelvin Lawson. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#if 1
-#ifndef __ATOM_USER_H__
-#define __ATOM_USER_H__
-
-
-/* Portable uint8_t and friends not available from stdint.h on this platform */
-#include <windows.h>
-
- 
-#define SYSTEM_MEMALIGN			sizeof (unsigned int)
-
-
-typedef unsigned int			uintptr_t ;
-typedef int						intptr_t ;
-typedef unsigned int			uint32_t ;
-typedef unsigned short			uint16_t ;
-typedef unsigned char			uint8_t ;
-typedef int						int32_t ;
-typedef short					int16_t ;
-typedef char					int8_t ;
-
-
-/**
- * Architecture-specific types.
- * Most of these are available from stdint.h on this platform, which is
- * included above.
- */
-#define POINTER					void *
-
- 
-#define ATOM_TLS				HATOMVM_CONTEXT	context ;
-
-
-#endif /* __ATOM_USER_H__ */
-#endif

ports/atomvm/atomvm.c

@@ -1,852 +0,0 @@
-/*
-* Copyright (c) 2010, Natie van Rooyen. All rights reserved.
-*
-* Redistribution and use in source and binary forms, with or without
-* modification, are permitted provided that the following conditions
-* are met:
-*
-* 1. Redistributions of source code must retain the above copyright
-*    notice, this list of conditions and the following disclaimer.
-* 2. Redistributions in binary form must reproduce the above copyright
-*    notice, this list of conditions and the following disclaimer in the
-*    documentation and/or other materials provided with the distribution.
-* 3. No personal names or organizations' names associated with the
-*    Atomthreads project may be used to endorse or promote products
-*    derived from this software without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
-* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
-* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-* POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/**
- * \file
- * Atom Virtual Machine.
- *
- *
- * This module implements the virtual machine.
- *
- *
- * \b Functions contained in this module:\n
- *
- * \b Function prototypes used for controlling the atom virtual machine: \n
- *
- * \li atomvmCtrlCreate(): .
- * \li atomvmCtrlRun(): .
- * \li atomvmCtrlIntRequest(): .
- * \li atomvmCtrlClose(): .
- *
- * \b Function prototypes for use by the atom virtual machine: \n
- *
- * \li atomvmInterruptMask(): .
- * \li atomvmContextCreate(): .
- * \li atomvmContextSwitch(): .
- * \li atomvmContextDesrtroy(): .
- * \li atomvmWriteThreadId(): .
- * \li atomvmReadThreadId(): .
- * \li atomvmInterruptWait(): .
- * \li atomvmGetVmId(): .
- *
- * \b Function prototypes to be implemted in the atom virtual machine: \n
- *
- * \li __atomvmReset(): .
- * \li __atomvmClose(): .
- *
- */
-
-#include "atomvm.h"
-#include <string.h>
-#include <windows.h>
-
-
-
-#define CONTEXT_VM                                          (CONTEXT_INTEGER | CONTEXT_CONTROL | CONTEXT_SEGMENTS)
-
-/* Data types */
-
-/* Forward declarations */
-typedef struct ATOMVM_S *                   PATOMVM ;
-typedef struct ATOMVM_CALLBACK_S *          PATOMVM_CALLBACK ;
-typedef struct ATOMVM_CONTEXT_S *           PATOMVM_CONTEXT ;
-
-typedef  uint32_t (*ATOMVM_CALLBACK_F) (PATOMVM, PATOMVM_CALLBACK) ;
-
-typedef struct ATOMVM_CALLBACK_S {
-
-    /* Address of callback function */
-    volatile ATOMVM_CALLBACK_F      callback ;
-
-    /* Synchronization lock, the virtual machine will be suspended during
-    the callback. Regular WIN32 synchronization methods cant be used
-    because SuspendThread() is used on the vm thread. */
-    volatile uint32_t               lock ;
-
-    /* Result of the call */
-    volatile uint32_t               result ;
-
-} ATOMVM_CALLBACK, *PATOMVM_CALLBACK ;
-
-
-/* ATOMVM_CALLBACK_CONTEXT is the parameter for a ATOMVM_CALLBACK_F call
-that take as parameter a pointer to a ATOMVM_CONTEXT to operate on */
-typedef struct ATOMVM_CALLBACK_CONTEXT_S {
-
-    ATOMVM_CALLBACK                 callback ;
-
-    /* Context the callback function will operate on */
-    volatile PATOMVM_CONTEXT        pcontext ;
-
-} ATOMVM_CALLBACK_CONTEXT, *PATOMVM_CALLBACK_CONTEXT ;
-
-
-/* ATOMVM_CALLBACK_CONTEXT_SWITCH is the parameter for a ATOMVM_CALLBACK_F call
-that take as parameter a pointer to a ATOMVM_CONTEXT to operate on */
-typedef struct ATOMVM_CALLBACK_CONTEXT_SWITCH_S {
-
-    ATOMVM_CALLBACK                 callback ;
-
-    /* Context the callback function will operate on */
-    volatile PATOMVM_CONTEXT        p_old_context ;
-    volatile PATOMVM_CONTEXT        p_new_context ;
-
-} ATOMVM_CALLBACK_CONTEXT_SWITCH, *PATOMVM_CALLBACK_CONTEXT_SWITCH ;
-
-/* ATOMVM_CALLBACK_INT_REQUEST is the parameter for a ATOMVM_CALLBACK_F call
-that take as parameter a pointer to to the function that will be called in
-an interrupt context */
-typedef struct ATOMVM_CALLBACK_INT_REQUEST_S {
-
-    ATOMVM_CALLBACK                 callback ;
-
-    /* Function pointer the callback will call */
-    void (*isr) (void) ;
-
-} ATOMVM_CALLBACK_INT_REQUEST, *PATOMVM_CALLBACK_INT_REQUEST ;
-
-/* ATOMVM_CONTEXT saves the state of a context created by
-atomvmContextCreate() and sheduled by atomvmContextSwitch(). */
-typedef struct ATOMVM_CONTEXT_S {
-
-    /* A virtual machine thread context. These are saved and restored
-    during context initialization and context switches */
-    CONTEXT                         context ;
-
-    /* When entering a critical section the interrupt_mask is
-    set for the context. Interrupts will only occur while
-    the interrupt_mask is zero. */
-    volatile uint32_t               interrupt_mask ;
-    uint32_t                        thread_id ;
-
-} ATOMVM_CONTEXT, *PATOMVM_CONTEXT ;
-
-/* ATOMVM defines the state of an instance to an atomvm. It is created
-by a call to atomvmCtrlCreate(). */
-typedef struct ATOMVM_S {
-
-    uint32_t                        atomvm_id ;
-
-    /* Thread the virtual machine will run in */
-    HANDLE                          vm_thread ;
-
-    /* Handles to events and mutexes used for synchronization */
-    HANDLE                          atomvm_call ;
-    HANDLE                          atomvm_int ;
-    HANDLE                          atomvm_int_complete ;
-    HANDLE                          atomvm_close ;
-
-    /* next ISR */
-    volatile void                   (*isr)(void) ;
-    /* True if in an ISR */
-    volatile uint32_t               status_isr ;
-
-    /* The current context that was scheduled by a call
-    to atomvmContextSwitch() */
-    PATOMVM_CONTEXT                 current_context ;
-
-    /* Service call address, synchronization lock, parameters
-    and, return value for the current service call */
-    PATOMVM_CALLBACK                service_call ;
-
-    /* Context for startup, before any context was scheduled */
-    ATOMVM_CONTEXT                  atom_init_context ;
-
-} ATOMVM, *PATOMVM ;
-
-
-/* Global declarations */
-volatile uint32_t                   g_atomvm_id = 0 ;
-volatile DWORD                      g_atomvm_tls_idx ;
-
-
-/* Forward declaration for the atom virtual machine thread */
-static DWORD WINAPI                 vm_thread (LPVOID lpParameter) ;
-
-
-/**
-* \ingroup atomvm
-* \b atomvmCtrlCreate
-*
-* This is an atomvm controll function used by a controlling thread.
-*
-* Initializes the virtual machine.
-*
-* @param[out] atomvm Handle to the virtual machine to create.
-*
-* @return Zero on failure.
-*/
-uint32_t
-atomvmCtrlCreate (HATOMVM *atomvm)
-{
-    PATOMVM patomvm = 0 ;
-
-    patomvm = (PATOMVM) malloc (sizeof(struct ATOMVM_S)) ;
-
-    if (patomvm) {
-
-        memset (patomvm, 0, sizeof(struct ATOMVM_S)) ;
-
-        patomvm->atomvm_id = InterlockedIncrement(&g_atomvm_id) - 1 ;
-
-        if (patomvm->atomvm_id == 0) {
-            g_atomvm_tls_idx = TlsAlloc () ;
-        }
-
-        patomvm->atomvm_call = CreateEvent (NULL, TRUE, FALSE, 0) ;
-        patomvm->atomvm_int = CreateEvent (NULL, TRUE, FALSE, 0) ;
-        patomvm->atomvm_int_complete = CreateEvent (NULL, FALSE, TRUE, 0) ;
-        patomvm->atomvm_close = CreateEvent (NULL, TRUE, FALSE, 0) ;
-
-        ATOMVM_ASSERT(patomvm->atomvm_call && patomvm->atomvm_int && patomvm->atomvm_int_complete && 
-                patomvm->atomvm_close, _T("ResumeThread failed")) ;
-
-        patomvm->vm_thread = CreateThread (NULL, 0, vm_thread, (void*)patomvm, CREATE_SUSPENDED, NULL) ;
-
-        ATOMVM_ASSERT(patomvm->vm_thread, _T("CreateThread failed")) ;
-
-        patomvm->atom_init_context.interrupt_mask = 1 ;
-        patomvm->current_context = &patomvm->atom_init_context ;
-
-        *atomvm = (HATOMVM)patomvm ;
-
-    }
-
-    return patomvm != 0 ;
-}
-
-
-/**
-* \ingroup atomvm
-* \b atomvmCtrlRun
-*
-* After a call to atomvmCtrlCreate this function start the atom virtual machine.
-* The calling thread will be used to manage interrupts and service calls in
-* the virtual machine. This function will not return untill atomvmCtrlClose
-* is called.
-*
-* @param[in] atomvm Handle to the virtual machine created by atomvmCtrlCreate.
-* @param[in] flags not used.
-*
-* @return None
-*/
-void
-atomvmCtrlRun (HATOMVM atomvm, uint32_t flags)
-{
-    PATOMVM             patomvm = (PATOMVM) atomvm ;
-    HANDLE              wait[3] ;
-    uint32_t            res ;
-    uint32_t            wait_object ;
-    PATOMVM_CALLBACK    service_call ;
-#if defined DEBUG || defined _DEBUG
-    BOOL                tls_res = 
-#endif
-    TlsSetValue (g_atomvm_tls_idx, (void*) atomvm) ;
-    ATOMVM_ASSERT(tls_res, _T("TlsSetValue failed")) ;
-
-    ResumeThread (patomvm->vm_thread) ;
-
-    wait[0] = patomvm->atomvm_call ;
-    wait[1] = patomvm->atomvm_int ;
-    wait[2] = patomvm->atomvm_close ;
-
-    for(;;) {
-
-        wait_object = WaitForMultipleObjects (3, wait,FALSE,INFINITE) ;
-
-        if (wait_object == WAIT_OBJECT_0) {
-
-            service_call = patomvm->service_call ;
-            while (!service_call->lock) {
-                SwitchToThread () ;
-            }
-
-            while ((res = SuspendThread (patomvm->vm_thread)) == (DWORD)-1) ;
-            ATOMVM_ASSERT(res == 0 , _T("SuspendThread failed")) ;
-#if (_WIN32_WINNT >= 0x0600)
-            /*
-                This is used for multi processor machines to ensure the thread
-                is stopped before executing the next instruction. Set
-                _WIN32_WINNT < 0x0600 if you are running Windows XP */
-            FlushProcessWriteBuffers ();
-#endif
-            InterlockedExchange (&service_call->result, service_call->callback (patomvm, service_call)) ;
-            InterlockedExchange (&service_call->lock, 0) ;
-            ResetEvent (patomvm->atomvm_call) ;
-            res = ResumeThread (patomvm->vm_thread) ;
-            ATOMVM_ASSERT(res == 1 , _T("ResumeThread failed")) ;
-
-        }
-
-        else if (wait_object == WAIT_OBJECT_0 + 1) {
-
-            if (patomvm->current_context->interrupt_mask == 0) {
-
-                while ((res = SuspendThread (patomvm->vm_thread)) == (DWORD)-1) ;
-                ATOMVM_ASSERT(res == 0 , _T("SuspendThread failed")) ;
-#if (_WIN32_WINNT >= 0x0600)
-                /*
-                    This is used for multi processor machines to ensure the thread
-                    is stopped before executing the next instruction. Set
-                    _WIN32_WINNT < 0x0600 if you are running Windows XP */
-                FlushProcessWriteBuffers ();
-#endif
-                if (patomvm->current_context->interrupt_mask == 0) {
-
-                    patomvm->status_isr++ ;
-                    patomvm->isr () ;
-                    patomvm->status_isr-- ;
-
-                    res = ResumeThread (patomvm->vm_thread) ;
-                    ATOMVM_ASSERT(res == 1 , _T("ResumeThread failed")) ;
-                    
-                    ResetEvent (patomvm->atomvm_int) ;
-                    InterlockedExchange ((volatile uint32_t*)&patomvm->isr, 0) ;
-                    SetEvent (patomvm->atomvm_int_complete) ;
-
-                } else {
-
-                    res = ResumeThread (patomvm->vm_thread) ;
-                    ATOMVM_ASSERT(res == 1 , _T("ResumeThread failed")) ;
-                    SwitchToThread () ;
-
-                }
-
-            } else {
-
-                SwitchToThread () ;
-
-            }
-
-        } else if (wait_object == WAIT_OBJECT_0 + 2) {
-
-            break ;
-
-        } else {
-
-            ATOMVM_ASSERT(res == 1 , _T("WaitForMultipleObjects failed")) ;
-
-        }
-
-    }
-
-}
-
-
-/**
-* \ingroup atomvm
-* \b atomvmCtrlClose
-*
-* This is an atomvm controll function used by a controlling thread
-* and must not be called from the atom virtual machine.
-*
-* Closes the virtual machine and release all memory and handles created
-* in atomvmCtrlCreate.
-*
-* ToDo: more testing.
-*
-* @param[in] atomvm Handle to the virtual machine created by atomvmCtrlCreate.
-*
-* @return None
-*/
-void
-atomvmCtrlClose (HATOMVM atomvm)
-{
-    PATOMVM     patomvm = (PATOMVM) atomvm ;
-    DWORD       code ;
-
-    __atomvmClose () ;
-
-    SetEvent (patomvm->atomvm_close) ;
-    do {
-        SwitchToThread () ;
-        GetExitCodeThread (patomvm->vm_thread, &code) ;
-    }	while (code == STILL_ACTIVE) ;
-
-    CloseHandle (patomvm->atomvm_call) ;
-    CloseHandle (patomvm->atomvm_int) ;
-    CloseHandle (patomvm->atomvm_int_complete) ;
-    CloseHandle (patomvm->atomvm_close) ;
-    CloseHandle (patomvm->vm_thread) ;
-
-    // TlsFree (g_atomvm_tls_idx) ;
-
-    free (atomvm) ;
-}
-
-
-/**
-* \b invokeCallback
-*
-* Invokes callback functions in the context of the controll thread as
-* requested from the virtual machine. In case this callback came from inside,
-* an isr it is already in the conrtext of the controll thread and the callback
-* routine is called directly.
-*
-* The atom virtual machine thread is suspended during the callback.
-*
-* @param[in] patomvm Pointer to the virtual machine created by atomvmCtrlCreate.
-* @param[in] callback Callback function.
-* @param[in/out] context Context the function will operate on.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-invokeCallback (PATOMVM patomvm, ATOMVM_CALLBACK_F callback, PATOMVM_CALLBACK service_call)
-{
-    uint32_t res ;
-
-    if (patomvm->status_isr == 0) {
-
-        service_call->lock = 0 ;
-        service_call->callback = callback ;
-        patomvm->service_call = service_call ;
-
-        SetEvent (patomvm->atomvm_call) ;
-        InterlockedIncrement (&service_call->lock) ;
-        while (service_call->lock != 0) ;
-        res = service_call->result ;
-
-    } else {
-
-        res = callback (patomvm, service_call) ;
-
-    }
-
-    return res ;
-}
-
-
-/*
-* \b getAtomvm
-*
-* Get the atomvm instance for the calling thread
-*
-* @return atomvm instance
-*/
-__inline PATOMVM
-getAtomvm (void)
-{
-    PATOMVM patomvm = (PATOMVM) TlsGetValue (g_atomvm_tls_idx) ;
-    
-    ATOMVM_ASSERT(patomvm , _T("TlsGetValue failed")) ;
-
-    return patomvm ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmInterruptMask
-*
-* This function is to be used by the atom virtual machine.
-*
-* This function will mask interrupts for the current atomvm context.
-*
-* @param[in] mask zero enables interrupts any other value masks interrupts.
-*
-* @return Interrupt mask before the function call.
-*/
-int32_t
-atomvmInterruptMask (uint32_t mask)
-{
-    PATOMVM         patomvm = getAtomvm () ;
-    int32_t         interrupts = 0;
-
-    if (patomvm->status_isr == 0) {
-        interrupts = InterlockedExchange (&patomvm->current_context->interrupt_mask, mask) ;
-    }
-
-    return interrupts ;
-}
-
-
-/**
-* \ingroup atomvm
-* \b atomvmCtrlIntRequest
-*
-* This is an atomvm controll function used by external threads
-* and must not be called from the atom virtual machine.
-*
-* This function requests an interrupt service routine to be called in the
-* context of the atom virtual machine.
-*
-* The call will return immediately after the interrupt was scheduled.
-* The call will block while a previously scheduled interrupt is in progress.
-*
-* @param[in] atomvm Handle to the virtual machine created by atomvmCtrlCreate.
-* @param[in] isr The address of the interrupt service routine. 
-*
-* @return None
-*/
-void
-atomvmCtrlIntRequest (HATOMVM atomvm, void (*isr) (void))
-{
-    PATOMVM         patomvm = (PATOMVM) atomvm ;
-
-    WaitForSingleObject (patomvm->atomvm_int_complete, INFINITE) ;
-    while (InterlockedCompareExchange ((volatile uint32_t *)&patomvm->isr, (uint32_t)isr, 0) != 0) {
-		SwitchToThread() ;
-	}
-    SetEvent (patomvm->atomvm_int) ;
-}
-
-
-/**
-* \b callbackContextCreate
-*
-* This function is invoked from the controll thread after a call to atomvmContextCreate.
-*
-* The atom virtual machine is suspended while this function is called.
-*
-* @param[in] patomvm Pointer to the virtual machine created by atomvmCtrlCreate.
-* @param[out] context Context to be initialized.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-callbackContextCreate (PATOMVM patomvm, PATOMVM_CALLBACK callback)
-{
-    PATOMVM_CALLBACK_CONTEXT    context_switch = (PATOMVM_CALLBACK_CONTEXT)callback;
-    CONTEXT *                   pcontext = &context_switch->pcontext->context ;
-
-    pcontext->ContextFlags = CONTEXT_VM ;
-
-    return GetThreadContext (patomvm->vm_thread, pcontext) ;
-}
-
-
-/**
-* \ingroup atomvm
-* \b atomvmContextCreate
-*
-* This function is to be used by the atom virtual machine.
-*
-* This function creates a atomvm thread context that can be scheduled
-* by atomvmContextSwitch.
-*
-* @param[in] interrupt_mask  initial interrupt mask of the thread.
-*
-* @return Handle to the context of the thread created.
-*/
-HATOMVM_CONTEXT
-atomvmContextCreate (uint32_t interrupt_mask)
-{
-    uint32_t            res ;
-    PATOMVM             patomvm = getAtomvm () ;
-    PATOMVM_CONTEXT     new_context = (PATOMVM_CONTEXT)malloc (sizeof(ATOMVM_CONTEXT)) ;
-    CONTEXT*            pcontext = &new_context->context ;
-    ATOMVM_CALLBACK_CONTEXT     context_init ;
-
-    context_init.pcontext = new_context ;
-    new_context->interrupt_mask = interrupt_mask ;
-    new_context->thread_id = (uint32_t) -1 ;
-    res = invokeCallback (patomvm, callbackContextCreate, (PATOMVM_CALLBACK)&context_init) ;
-
-    if (res) {
-        return (HATOMVM_CONTEXT)new_context ;
-    } else {
-        free (new_context) ;
-    }
-
-    return 0 ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmContextInit
-*
-* This function is to be used by the atom virtual machine.
-*
-* This function initialize a atomvm thread context that can be scheduled
-* by atomvmContextSwitch.
-*
-* @param[out] context Handle to the context of the thread that are allocated
-* by the caller.
-* @param[in] stack Stack top.
-* @param[in] entry Entry point of the thread.
-* @param[in] arg argument passed on the stack as first parameter.
-* @param[in] exit exit function to return to.
-* @param[in] status status for exit function.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-atomvmContextInit (HATOMVM_CONTEXT context, uint32_t* stack, void (*entry)(uint32_t), uint32_t arg, void (*exit)(uint32_t))
-{
-    uint32_t            res = 0 ;
-    PATOMVM_CONTEXT     new_context = (PATOMVM_CONTEXT)context ;
-    CONTEXT*            pcontext = &new_context->context ;
-
-    *stack-- = arg;
-    *stack = (uint32_t)exit ;
-
-        pcontext->Ebp = (uint32_t)stack ;
-        pcontext->Esp = (uint32_t)stack ;
-        pcontext->Eip = (uint32_t)entry ;
-
-    return res ;
-}
-
-/**
-* \b callbackContextSwitch
-*
-* This function is invoked from the controll thread after a call to atomvmContextSwitch.
-*
-* The atom virtual machine is suspended while this function is called.
-*
-* @param[in] patomvm Pointer to the virtual machine created by atomvmCtrlCreate.
-* @param[out] context Context to be scheduled.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-callbackContextSwitch (PATOMVM patomvm, PATOMVM_CALLBACK callback)
-{
-    uint32_t                    res1 = 1 ;
-    uint32_t                    res2 ;
-    PATOMVM_CALLBACK_CONTEXT_SWITCH    context_switch = (PATOMVM_CALLBACK_CONTEXT_SWITCH)callback ;
-
-    if (context_switch->p_old_context) {
-        res1 = GetThreadContext (patomvm->vm_thread, &context_switch->p_old_context->context) ;
-        ATOMVM_ASSERT(res1 , _T("GetThreadContext failed")) ;
-    }
-
-    patomvm->current_context = context_switch->p_new_context ;
-    res2 = SetThreadContext (patomvm->vm_thread, &context_switch->p_new_context->context) ;
-    ATOMVM_ASSERT(res2 , _T("SetThreadContext failed")) ;
-
-    return res1 & res2 ;
-}
-
-
-/**
-* \ingroup atomvm
-* \b atomvmContextSwitch
-*
-* This function is to be used by the atom virtual machine.
-*
-* This function schedules a thread for the context created by atomvmContextCreate.
-*
-* @param[in] new_context The context to schedule.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-atomvmContextSwitch  (HATOMVM_CONTEXT old_context, HATOMVM_CONTEXT new_context)
-{
-    PATOMVM                     patomvm = getAtomvm () ;
-    ATOMVM_CALLBACK_CONTEXT_SWITCH     context_switch ;
-
-    context_switch.p_old_context = (PATOMVM_CONTEXT) old_context ;
-    context_switch.p_new_context = (PATOMVM_CONTEXT) new_context ;
-
-    return invokeCallback (patomvm, callbackContextSwitch, (PATOMVM_CALLBACK)&context_switch) ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmContextDesrtroy
-*
-* This function is to be used by the atom virtual machine.
-*
-* This functiondestroyes a atomvm context created by atomvmContextCreate.
-*
-* @param[in] context The context to destroy.
-*
-* @return None
-*/
-void
-atomvmContextDesrtroy  (HATOMVM_CONTEXT context)
-{
-    PATOMVM     patomvm = getAtomvm () ;
-
-    ATOMVM_ASSERT(patomvm->current_context !=  (PATOMVM_CONTEXT)context,
-    			_T("atomvmContextDesrtroy failed")) ;
-
-    free((void*)context) ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmWriteThreadId
-*
-* Write a thread ID.
-*
-* Write a thread ID for the current context.
-*
-* @param[in] thread_id thread_id.
-*
-* @return None
-*/
-void
-atomvmWriteThreadId  (uint32_t thread_id)
-{
-    PATOMVM     patomvm = getAtomvm () ;
-
-    patomvm->current_context->thread_id = thread_id ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmReadThreadId
-*
-* Write a thread ID.
-*
-* Read a thread ID for the current context.
-*
-* @return thread_id
-*/
-uint32_t
-atomvmReadThreadId  (void)
-{
-    PATOMVM     patomvm = getAtomvm () ;
-
-    return patomvm->current_context->thread_id ;
-}
-
-
-/**
-* \ingroup atomvm
-* \b atomvmGetVmId
-*
-* Returns an identifier for the virtual machine. This is zero for the first 
-* virtual machine created with atomvmCtrlCreate(), 1 for the second and so on.
-*
-* @return The atom vm ID
-*/
-uint32_t
-atomvmGetVmId (void)
-{
-    PATOMVM patomvm =  getAtomvm () ;
-
-    return patomvm->atomvm_id ;
-}
-
-
-/**
-* \b callbackInterruptWait
-*
-* This function is invoked from the controll thread after a call to atomvmInterruptWait().
-*
-* The atom virtual machine is suspended while this function is called.
-*
-* @param[in] patomvm Pointer to the virtual machine created by atomvmCtrlCreate.
-* @param[out] callback Callback parameter.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-callbackIntWait (PATOMVM patomvm, PATOMVM_CALLBACK callback)
-{
-    WaitForSingleObject (patomvm->atomvm_int_complete, INFINITE) ;
-    return WaitForSingleObject (patomvm->atomvm_int, INFINITE) == WAIT_OBJECT_0 ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmInterruptWait
-*
-* This function is to be used by the atom virtual machine.
-*
-* This function if for synchronization between multiple
-* atom vms.
-*
-*
-* @return void.
-*/
-void
-atomvmIntWait  (void)
-{
-    PATOMVM                     patomvm = getAtomvm () ;
-    ATOMVM_CALLBACK             callback ;
-
-    invokeCallback (patomvm, callbackIntWait, (PATOMVM_CALLBACK)&callback) ;
-}
-
-/**
-* \b callbackIntRequest
-*
-* This function is invoked from the controll thread after a call to atomvmIntRequest().
-*
-* The atom virtual machine is suspended while this function is called.
-*
-* @param[in] patomvm Pointer to the virtual machine created by atomvmCtrlCreate.
-* @param[in] callback Callback parameter.
-*
-* @return Zero on failure, try to call GetLastError().
-*/
-uint32_t
-callbackIntRequest (PATOMVM patomvm, PATOMVM_CALLBACK callback)
-{
-    PATOMVM_CALLBACK_INT_REQUEST    int_request = (PATOMVM_CALLBACK_INT_REQUEST)callback ;
-
-    int_request->isr () ;
-    return 1 ;
-}
-
-/**
-* \ingroup atomvm
-* \b atomvmIntRequest
-*
-* This function is to be used by the atom virtual machine.
-*
-* @param[in] isr Function that will be called from the controll thread.
-*
-* @return void.
-*/
-void
-atomvmIntRequest  (void (*isr) (void))
-{
-    PATOMVM                         patomvm = getAtomvm () ;
-    ATOMVM_CALLBACK_INT_REQUEST     callback ;
-    
-    callback.isr = isr ;
-    invokeCallback (patomvm, callbackIntRequest, (PATOMVM_CALLBACK)&callback) ;
-}
-
-
-/**
-* \b vm_thread
-*
-* Windows thread in which the atom virtual machine will execute.
-*
-* __atomvmReset() runs the virtual machie and should only return after
-* __atomvmClose() was called.
-*
-* @return None.
-*/
-DWORD WINAPI
-vm_thread (LPVOID lpParameter)
-{
-    BOOL res = TlsSetValue (g_atomvm_tls_idx, lpParameter) ;
-
-    ATOMVM_ASSERT(res, _T("TlsSetValue failed")) ;
-    __atomvmReset () ;
-    return 0 ;
-}

ports/atomvm/atomvm.h

@@ -1,121 +0,0 @@
-/*
- * Copyright (c) 2010, Natie van Rooyen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-
-
-/** \mainpage \ref atomvm
-*   \defgroup atomvm Atomvm API
-*
-* @authors Natie van Rooyen
-*
-* @section intro Introduction
-* Atomvm is a tiny virtual machine that runs on Windows and can be debugged 
-* from an IDE like Microsoft Visual C++ Express. The primary purpose of this 
-* virtual machine is for the evaluation of Real Time Operating Systems (like 
-* Atomthreads) and the development and testing of modules for this Real Time 
-* Operating System on a Windows machine.
-* 
-* Atomvm makes use of the Windows API functions GetThreadContext() and 
-* SetThreadContext() to create multiple virtual contexts or threads inside a 
-* single Windows thread. Atomvm also simulates interrupts with an interrupt 
-* mask accessible from the Atomvm threads. External events can be queued as 
-* interrupts to Atomvm, for example a timer loop generating system timer tick 
-* interrupts for a Real Time Operating System ported to Atomvm.
-* 
-* */
-
-#ifndef __ATOMVM_H__
-#define __ATOMVM_H__
-
-#include <crtdbg.h>
-#include "types.h"
-
-
-#if defined _DEBUG || defined DEBUG
-#define ATOMVM_ASSERT(x, msg)           _ASSERT((x))
-#else
-#define ATOMVM_ASSERT(x, msg)
-#endif
-
-
-#define ATOMVM_MAX_VM           8
-
-/* Forward declarations */
-
-/* This is an opaque handle to an instance of an atomvm created
-   by a call to atomvmCtrlCreate() */
-typedef struct ATOMVM*                  HATOMVM ; 
-
-/* This is an opaque handle to an atomvm context created
-   by a call to atomvmContextCreate() */
-typedef struct ATOMVM_CONTEXT*          HATOMVM_CONTEXT ; 
-
-
-/* Function prototypes used for controlling the atom virtual machine */
-extern uint32_t         atomvmCtrlCreate (HATOMVM* atomvm) ;
-extern void             atomvmCtrlRun (HATOMVM atomvm, uint32_t flags) ;
-extern void             atomvmCtrlIntRequest (HATOMVM atomvm, void (*isr) (void)) ;
-extern void             atomvmCtrlClose (HATOMVM atomvm) ;
-
-/* Function prototypes for use by the atom virtual machine from within the
-   call to __atomvmReset(). */
-extern int32_t          atomvmInterruptMask (uint32_t mask) ;
-extern HATOMVM_CONTEXT  atomvmContextCreate (uint32_t interrupt_mask) ;
-extern uint32_t         atomvmContextInit (HATOMVM_CONTEXT context, uint32_t* stack, 
-                                             void (*entry)(uint32_t), uint32_t arg, void (*exit)(uint32_t)) ;
-extern uint32_t         atomvmContextSwitch (HATOMVM_CONTEXT old_context, HATOMVM_CONTEXT new_context) ;
-extern void             atomvmContextDesrtroy (HATOMVM_CONTEXT context) ;
-extern void             atomvmWriteThreadId (uint32_t thread_id) ;
-extern uint32_t         atomvmReadThreadId (void) ;
-extern void             atomvmIntWait (void) ;
-extern void             atomvmIntRequest (void (*isr) (void)) ;
-extern uint32_t         atomvmGetVmId (void) ;
-
-
-/**
-* \ingroup atomvm
-* \b __atomvmReset
-*
-* Function prototype to be implemented as entry point for the atom virtual machine.
-*
-* @return void.
-*/
-extern  void            __atomvmReset (void) ;
-
-/**
-* \ingroup atomvm
-* \b __atomvmClose
-*
-* Function prototype to be implemted in the atom virtual machine
-*
-* @return void.
-*/
-extern  void            __atomvmClose (void) ;
-
-#endif /* __ATOMVM_H__ */

ports/atomvm/msvc/main.c

@@ -1,270 +0,0 @@
-#include <stdio.h>
-#include <windows.h>
-
-#include "atom.h"
-#include "atomvm.h"
-#include "atomport.h"
-
-
-// #define UNIT_TESTS
-#ifdef UNIT_TESTS
-extern uint32_t test_start (void) ;
-#endif
-
-#define TEST_THREADS				47
-
-#define TEST_STACK_BYTE_SIZE		0x10000
-#define IDLE_STACK_BYTE_SIZE		0x10000
-#define MONITOR_STACK_BYTE_SIZE		0x10000
-
-
-
-static unsigned char	idle_stack[IDLE_STACK_BYTE_SIZE] ;
-static unsigned char	monitor_stack[MONITOR_STACK_BYTE_SIZE] ;
-static unsigned char	test_stack[TEST_THREADS+1][TEST_STACK_BYTE_SIZE] ;
-static unsigned int		test_counter[TEST_THREADS+1] = {0} ;
-
-static unsigned int		test2_counter = 0 ;
-static unsigned int		test3_counter = 0 ;
-static unsigned int		test_isr_count = 0 ;
-
-
-static unsigned char	test2_stack[TEST_STACK_BYTE_SIZE] ;
-static unsigned char	test3_stack[TEST_STACK_BYTE_SIZE] ;
-static unsigned char	test_idle_stack[TEST_STACK_BYTE_SIZE] ;
-
-
-static uint8_t			test_prio[60] = {	
-								001,010,100,200,250, 200,200,200,200,200,
-								150,150,150,150,150, 250,250,250,250,250,
-								101,102,103,104,105, 202,204,206,208,210,
-								150,150,150,150,150, 250,250,250,250,250,
-								121,122,123,124,125, 061,063,065,067,061,
-								150,150,150,150,150, 250,250,250,250,250 
-								};
-
-static uint32_t			test_interv[60] = {	
-								001,001,001,001,001, 002,003,004,005,006,
-								015,015,015,015,015, 025,024,023,022,021,
-								905,005,005,005,805, 050,051,052,053,054,
-								015,015,015,015,015, 025,024,023,022,021,
-								030,030,030,030,030, 070,071,072,073,474,
-								005,006,007,007,001, 001,001,003,003,005 
-								};
-									
-
-ATOM_TCB				test_tcb[TEST_THREADS+1] ;
-ATOM_TCB				monitor_tcb ;
-ATOM_TCB				test2_tcb ;
-ATOM_TCB				test3_tcb ;
-ATOM_TCB				test_idle_tcb ;
-
-DWORD WINAPI			isr_thread_proc (LPVOID lpParameter) ;
-static HANDLE			isr_thread_1 ;
-static HANDLE			isr_thread_2 ;
-static HANDLE			isr_thread_3 ;
-static HANDLE			isr_thread_4 ;
-
-void
-ipi_sr()
-{
-    printf("ipi\r\n") ;
-}
-
-void 
-monitor_thread (uint32_t parm)
-{
-	CRITICAL_STORE;
-	int i  ;
-	int c = 0 ;
-	ATOM_TCB *tcb ;
-    static unsigned int idle_1 = 0, idle_2 = 0, int_count = 0 ;
-    unsigned int delta_idle_1 , delta_idle_2 , delta_int_count  ;
-
-	tcb = atomCurrentContext() ;
-
-	for (;;)
-    {
-		
-		CRITICAL_START();
-
-		printf("Monitor # %04d (%08d)\n", c++, atomTimeGet()) ;
-		printf("-------------------------\n") ;
-
-		for (i=0; i<TEST_THREADS/3; i++) {
-			printf("Thr %.2d cnt %08d\t",i,test_counter[i]);	
-			printf("Thr %.2d cnt %08d\t",i+TEST_THREADS/3,test_counter[i+TEST_THREADS/3]);	
-			printf("Thr %.2d cnt %08d\n",i+TEST_THREADS*2/3,test_counter[i+TEST_THREADS*2/3]);	
-		}
-
-        delta_idle_1 = test2_counter - idle_1 ;
-        delta_idle_2 = test3_counter - idle_2 ;
-        delta_int_count = test_isr_count - int_count ;
-		printf("\nIdle Threadd 1 Counter =	%d	%d	%d\nIdle Theadrd 2 Counter =	%d	%d	%d\nInterrupt Counter      =	%d	%d	%d",
-                test2_counter, delta_idle_1, (unsigned int)(test2_counter / c),
-                test3_counter, delta_idle_2, (unsigned int)(test3_counter / c),
-                test_isr_count, delta_int_count, (unsigned int)(test_isr_count / c));
-		printf ("\n\n") ;
-        idle_1 = test2_counter ; 
-        idle_2 = test3_counter ;
-        int_count = test_isr_count ;
-		CRITICAL_END();
-        //for (i=0; i<100;i++) {
-        //    atomvmInterruptWait () ;
-        //}
-		atomTimerDelay (450) ;
-        //atomvmScheduleIpi (atomvmGetVmId(), (uint32_t) ipi_sr) ;
-
-	}
-}
-
-
-void 
-test_thread (uint32_t parm)
-{
-	CRITICAL_STORE;
-
-	for (;;) {		
-
-		atomTimerDelay (test_interv[parm]) ;
-		CRITICAL_START();
-		test_counter[parm]++ ;	
-		CRITICAL_END();
-
-	}
-}
-
-
-void 
-test2_thread (uint32_t parm)
-{
-	CRITICAL_STORE;
-
-	for (;;) {	
-
-		CRITICAL_START();
-		test2_counter++ ;
-		CRITICAL_END();
-
-	}
-}
-
-
-void test3_thread(uint32_t parm)
-{
-	CRITICAL_STORE;
-
-	for (;;) {		
-
-		CRITICAL_START();
-		test3_counter++ ;
-		CRITICAL_END();
-
-	}
-}
-
-#ifdef UNIT_TESTS
-void unit_test_thread(uint32_t parm)
-{
-	unsigned int failures ;
-
-	failures = test_start () ;
-	printf ("test_start %d failures\n", failures) ;
-
-	while(1) {
-
-		 atomTimerDelay (100);
-	}
-
-}
-#endif
-
- void 
-__atomvmReset ()
-{
-	unsigned int i ;
-
-	atomOSInit(&idle_stack[0], IDLE_STACK_BYTE_SIZE, 1) ;
-#ifndef UNIT_TESTS
-
-	for (i=0; i< TEST_THREADS;i++) {
-		atomThreadCreate ((ATOM_TCB *)&test_tcb[i], test_prio[i], test_thread, i, &test_stack[i][0], TEST_STACK_BYTE_SIZE, 1);
-	}
-
-	atomThreadCreate ((ATOM_TCB *)&monitor_tcb, 50, monitor_thread, 0, &monitor_stack[0], MONITOR_STACK_BYTE_SIZE, 1);
-	
-	atomThreadCreate ((ATOM_TCB *)&test2_tcb, 253, test2_thread, 0, &test2_stack[0], TEST_STACK_BYTE_SIZE, 1);
-	atomThreadCreate ((ATOM_TCB *)&test3_tcb, 253, test3_thread, 0, &test3_stack[0], TEST_STACK_BYTE_SIZE, 1);
-#else
-
-	atomThreadCreate ((ATOM_TCB *)&test2_tcb, 16, unit_test_thread, 0, &test2_stack[], TEST_STACK_BYTE_SIZE, 1);
-
-#endif
-
-	atomOSStart() ;
-}
-
- void 
-__atomvmClose () 
- {
-
- }
-
-
-
-void
-test_isr (void)
-{
-	static int i = 0 ;
-	test_isr_count++ ;
-	if (i++==25) {
-		//Sleep(3) ;
-		i = 0;
-	}
-
-}
-
-
-DWORD WINAPI 
-isr_thread_proc (LPVOID lpParameter)
- {
-	 int i = 0 ;
-     int x ;
-     int y = rand() % 100 ;
-	 while (1) {
-		atomvmCtrlIntRequest (the_atomvm, test_isr) ;
-		if (i++==y) {
-            x = rand()  % 50 ;
-			Sleep (x) ;
-            y = rand() % 100 ;
-			i = 0 ;
-		}
-	 }
-
-	return 0 ;
- }
-
-
-void 
-main ()
-{
-	atomvmRun () ;
-
-#ifndef UNIT_TESTS
-	isr_thread_1 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-	isr_thread_2 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-	isr_thread_3 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-	isr_thread_4 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-
-	ResumeThread (isr_thread_1) ;
-	ResumeThread (isr_thread_2) ;
-	ResumeThread (isr_thread_3) ;
-	ResumeThread (isr_thread_4) ;
-#endif
-
-	while (1)  {
-		Sleep(1) ;
-		atomvmCtrlIntRequest (the_atomvm, archTimerTickIrqHandler) ;
-	}
-
-}

ports/atomvm/msvc/msvc.sln

@@ -1,20 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual C++ Express 2010
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "msvc", "msvc.vcxproj", "{77095EB1-4988-4A04-8751-69C63C7C541B}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Win32 = Debug|Win32
-		Release|Win32 = Release|Win32
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{77095EB1-4988-4A04-8751-69C63C7C541B}.Debug|Win32.ActiveCfg = Debug|Win32
-		{77095EB1-4988-4A04-8751-69C63C7C541B}.Debug|Win32.Build.0 = Debug|Win32
-		{77095EB1-4988-4A04-8751-69C63C7C541B}.Release|Win32.ActiveCfg = Release|Win32
-		{77095EB1-4988-4A04-8751-69C63C7C541B}.Release|Win32.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal

ports/atomvm/msvc/msvc.vcxproj

@@ -1,102 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{77095EB1-4988-4A04-8751-69C63C7C541B}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>msvc</RootNamespace>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <LinkIncremental>true</LinkIncremental>
-    <IncludePath>$(MSBuildProjectDirectory)/../../../kernel;$(MSBuildProjectDirectory)/..;$(IncludePath)</IncludePath>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <IncludePath>$(MSBuildProjectDirectory)/..;$(MSBuildProjectDirectory)/../../../kernel;$(IncludePath)</IncludePath>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\..\kernel\atom.h" />
-    <ClInclude Include="..\..\..\kernel\atommutex.h" />
-    <ClInclude Include="..\..\..\kernel\atomqueue.h" />
-    <ClInclude Include="..\..\..\kernel\atomsem.h" />
-    <ClInclude Include="..\..\..\kernel\atomtimer.h" />
-    <ClInclude Include="..\atomport-tests.h" />
-    <ClInclude Include="..\atomport.h" />
-    <ClInclude Include="..\atomuser.h" />
-    <ClInclude Include="..\atomvm.h" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\..\kernel\atomkernel.c" />
-    <ClCompile Include="..\..\..\kernel\atommutex.c" />
-    <ClCompile Include="..\..\..\kernel\atomqueue.c" />
-    <ClCompile Include="..\..\..\kernel\atomsem.c" />
-    <ClCompile Include="..\..\..\kernel\atomtimer.c" />
-    <ClCompile Include="..\atomport.c" />
-    <ClCompile Include="..\atomvm.c" />
-    <ClCompile Include="main.c" />
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>

ports/atomvm/msvc/msvc.vcxproj.filters

@@ -1,67 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <Filter Include="atomthreads">
-      <UniqueIdentifier>{d05cbb5a-256f-4127-bd5b-c3bd69b3672c}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="port">
-      <UniqueIdentifier>{f30700d8-652d-477c-a4f2-d23e7784de50}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="atomvm">
-      <UniqueIdentifier>{a4f641bc-296d-4546-a831-2e1d0d7e9242}</UniqueIdentifier>
-    </Filter>
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\..\kernel\atom.h">
-      <Filter>atomthreads</Filter>
-    </ClInclude>
-    <ClInclude Include="..\..\..\kernel\atommutex.h">
-      <Filter>atomthreads</Filter>
-    </ClInclude>
-    <ClInclude Include="..\..\..\kernel\atomqueue.h">
-      <Filter>atomthreads</Filter>
-    </ClInclude>
-    <ClInclude Include="..\..\..\kernel\atomsem.h">
-      <Filter>atomthreads</Filter>
-    </ClInclude>
-    <ClInclude Include="..\..\..\kernel\atomtimer.h">
-      <Filter>atomthreads</Filter>
-    </ClInclude>
-    <ClInclude Include="..\atomport.h">
-      <Filter>port</Filter>
-    </ClInclude>
-    <ClInclude Include="..\atomport-tests.h">
-      <Filter>port</Filter>
-    </ClInclude>
-    <ClInclude Include="..\atomuser.h">
-      <Filter>port</Filter>
-    </ClInclude>
-    <ClInclude Include="..\atomvm.h">
-      <Filter>atomvm</Filter>
-    </ClInclude>
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\..\kernel\atomkernel.c">
-      <Filter>atomthreads</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\..\kernel\atommutex.c">
-      <Filter>atomthreads</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\..\kernel\atomqueue.c">
-      <Filter>atomthreads</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\..\kernel\atomsem.c">
-      <Filter>atomthreads</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\..\kernel\atomtimer.c">
-      <Filter>atomthreads</Filter>
-    </ClCompile>
-    <ClCompile Include="..\atomport.c">
-      <Filter>port</Filter>
-    </ClCompile>
-    <ClCompile Include="main.c" />
-    <ClCompile Include="..\atomvm.c">
-      <Filter>atomvm</Filter>
-    </ClCompile>
-  </ItemGroup>
-</Project>

ports/atomvm/test/main.c

@@ -1,270 +0,0 @@
-#include <stdio.h>
-#include <windows.h>
-
-#include "atom.h"
-#include "atomvm.h"
-#include "atomport.h"
-
-
-// #define UNIT_TESTS
-#ifdef UNIT_TESTS
-extern uint32_t test_start (void) ;
-#endif
-
-#define TEST_THREADS				47
-
-#define TEST_STACK_BYTE_SIZE		0x10000
-#define IDLE_STACK_BYTE_SIZE		0x10000
-#define MONITOR_STACK_BYTE_SIZE		0x10000
-
-
-
-static unsigned char	idle_stack[IDLE_STACK_BYTE_SIZE] ;
-static unsigned char	monitor_stack[MONITOR_STACK_BYTE_SIZE] ;
-static unsigned char	test_stack[TEST_THREADS+1][TEST_STACK_BYTE_SIZE] ;
-static unsigned int		test_counter[TEST_THREADS+1] = {0} ;
-
-static unsigned int		test2_counter = 0 ;
-static unsigned int		test3_counter = 0 ;
-static unsigned int		test_isr_count = 0 ;
-
-
-static unsigned char	test2_stack[TEST_STACK_BYTE_SIZE] ;
-static unsigned char	test3_stack[TEST_STACK_BYTE_SIZE] ;
-static unsigned char	test_idle_stack[TEST_STACK_BYTE_SIZE] ;
-
-
-static uint8_t			test_prio[60] = {	
-								001,010,100,200,250, 200,200,200,200,200,
-								150,150,150,150,150, 250,250,250,250,250,
-								101,102,103,104,105, 202,204,206,208,210,
-								150,150,150,150,150, 250,250,250,250,250,
-								121,122,123,124,125, 061,063,065,067,061,
-								150,150,150,150,150, 250,250,250,250,250 
-								};
-
-static uint32_t			test_interv[60] = {	
-								001,001,001,001,001, 002,003,004,005,006,
-								015,015,015,015,015, 025,024,023,022,021,
-								905,005,005,005,805, 050,051,052,053,054,
-								015,015,015,015,015, 025,024,023,022,021,
-								030,030,030,030,030, 070,071,072,073,474,
-								005,006,007,007,001, 001,001,003,003,005 
-								};
-									
-
-ATOM_TCB				test_tcb[TEST_THREADS+1] ;
-ATOM_TCB				monitor_tcb ;
-ATOM_TCB				test2_tcb ;
-ATOM_TCB				test3_tcb ;
-ATOM_TCB				test_idle_tcb ;
-
-DWORD WINAPI			isr_thread_proc (LPVOID lpParameter) ;
-static HANDLE			isr_thread_1 ;
-static HANDLE			isr_thread_2 ;
-static HANDLE			isr_thread_3 ;
-static HANDLE			isr_thread_4 ;
-
-void
-ipi_sr()
-{
-    printf("ipi\r\n") ;
-}
-
-void 
-monitor_thread (uint32_t parm)
-{
-	CRITICAL_STORE;
-	int i  ;
-	int c = 0 ;
-	ATOM_TCB *tcb ;
-    static unsigned int idle_1 = 0, idle_2 = 0, int_count = 0 ;
-    unsigned int delta_idle_1 , delta_idle_2 , delta_int_count  ;
-
-	tcb = atomCurrentContext() ;
-
-	for (;;)
-    {
-		
-		CRITICAL_START();
-
-		printf("Monitor # %04d (%08d)\n", c++, atomTimeGet()) ;
-		printf("-------------------------\n") ;
-
-		for (i=0; i<TEST_THREADS/3; i++) {
-			printf("Thr %.2d cnt %08d\t",i,test_counter[i]);	
-			printf("Thr %.2d cnt %08d\t",i+TEST_THREADS/3,test_counter[i+TEST_THREADS/3]);	
-			printf("Thr %.2d cnt %08d\n",i+TEST_THREADS*2/3,test_counter[i+TEST_THREADS*2/3]);	
-		}
-
-        delta_idle_1 = test2_counter - idle_1 ;
-        delta_idle_2 = test3_counter - idle_2 ;
-        delta_int_count = test_isr_count - int_count ;
-		printf("\nIdle Threadd 1 Counter =	%d	%d	%d\nIdle Theadrd 2 Counter =	%d	%d	%d\nInterrupt Counter      =	%d	%d	%d",
-                test2_counter, delta_idle_1, (unsigned int)(test2_counter / c),
-                test3_counter, delta_idle_2, (unsigned int)(test3_counter / c),
-                test_isr_count, delta_int_count, (unsigned int)(test_isr_count / c));
-		printf ("\n\n") ;
-        idle_1 = test2_counter ; 
-        idle_2 = test3_counter ;
-        int_count = test_isr_count ;
-		CRITICAL_END();
-        //for (i=0; i<100;i++) {
-        //    atomvmInterruptWait () ;
-        //}
-		atomTimerDelay (150) ;
-        //atomvmScheduleIpi (atomvmGetVmId(), (uint32_t) ipi_sr) ;
-
-	}
-}
-
-
-void 
-test_thread (uint32_t parm)
-{
-	CRITICAL_STORE;
-
-	for (;;) {		
-
-		atomTimerDelay (test_interv[parm]) ;
-		CRITICAL_START();
-		test_counter[parm]++ ;	
-		CRITICAL_END();
-
-	}
-}
-
-
-void 
-test2_thread (uint32_t parm)
-{
-	CRITICAL_STORE;
-
-	for (;;) {	
-
-		CRITICAL_START();
-		test2_counter++ ;
-		CRITICAL_END();
-
-	}
-}
-
-
-void test3_thread(uint32_t parm)
-{
-	CRITICAL_STORE;
-
-	for (;;) {		
-
-		CRITICAL_START();
-		test3_counter++ ;
-		CRITICAL_END();
-
-	}
-}
-
-#ifdef UNIT_TESTS
-void unit_test_thread(uint32_t parm)
-{
-	unsigned int failures ;
-
-	failures = test_start () ;
-	printf ("test_start %d failures\n", failures) ;
-
-	while(1) {
-
-		 atomTimerDelay (100);
-	}
-
-}
-#endif
-
- void 
-__atomvmReset ()
-{
-	unsigned int i ;
-
-	atomOSInit(&idle_stack[IDLE_STACK_BYTE_SIZE - sizeof(unsigned int)], IDLE_STACK_BYTE_SIZE - sizeof(unsigned int)) ;
-#ifndef UNIT_TESTS
-
-	for (i=0; i< TEST_THREADS;i++) {
-		atomThreadCreate ((ATOM_TCB *)&test_tcb[i], test_prio[i], test_thread, i, &test_stack[i][TEST_STACK_BYTE_SIZE  - sizeof(unsigned int)], TEST_STACK_BYTE_SIZE  - sizeof(unsigned int));
-	}
-
-	atomThreadCreate ((ATOM_TCB *)&monitor_tcb, 50, monitor_thread, 0, &monitor_stack[(MONITOR_STACK_BYTE_SIZE) - sizeof(unsigned int)], MONITOR_STACK_BYTE_SIZE  - sizeof(unsigned int));
-	
-	atomThreadCreate ((ATOM_TCB *)&test2_tcb, 253, test2_thread, 0, &test2_stack[(TEST_STACK_BYTE_SIZE) - sizeof(unsigned int)], (TEST_STACK_BYTE_SIZE) - sizeof(unsigned int));
-	atomThreadCreate ((ATOM_TCB *)&test3_tcb, 253, test3_thread, 0, &test3_stack[(TEST_STACK_BYTE_SIZE) - sizeof(unsigned int)], (TEST_STACK_BYTE_SIZE) - sizeof(unsigned int));
-#else
-
-	atomThreadCreate ((ATOM_TCB *)&test2_tcb, 16, unit_test_thread, 0, &test2_stack[(TEST_STACK_BYTE_SIZE) - sizeof(unsigned int)], (TEST_STACK_BYTE_SIZE) - sizeof(unsigned int));
-
-#endif
-
-	atomOSStart() ;
-}
-
- void 
-__atomvmClose () 
- {
-
- }
-
-
-
-void
-test_isr ()
-{
-	static int i = 0 ;
-	test_isr_count++ ;
-	if (i++==25) {
-		//Sleep(3) ;
-		i = 0;
-	}
-
-}
-
-
-DWORD WINAPI 
-isr_thread_proc (LPVOID lpParameter)
- {
-	 int i = 0 ;
-     int x ;
-     int y = rand() % 100 ;
-	 while (1) {
-		atomvmCtrlIntRequest (the_atomvm, (uintptr_t)test_isr) ;
-		if (i++==y) {
-            x = rand()  % 50 ;
-			Sleep (x) ;
-            y = rand() % 100 ;
-			i = 0 ;
-		}
-	 }
-
-	return 0 ;
- }
-
-
-void 
-main ()
-{
-	atomvmRun () ;
-
-#ifndef UNIT_TESTS
-	isr_thread_1 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-	isr_thread_2 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-	isr_thread_3 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-	isr_thread_4 = CreateThread (NULL, 0, isr_thread_proc, 0, CREATE_SUSPENDED, NULL) ;
-
-	ResumeThread (isr_thread_1) ;
-	ResumeThread (isr_thread_2) ;
-	ResumeThread (isr_thread_3) ;
-	ResumeThread (isr_thread_4) ;
-#endif
-
-	while (1)  {
-		Sleep(1) ;
-		atomvmCtrlIntRequest (the_atomvm, (uintptr_t)archTimerTickIrqHandler) ;
-	}
-
-}

ports/atomvm/types.h

@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2010,Kelvin Lawson. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef __ATOM_USER_H__
-#define __ATOM_USER_H__
-
-
-/* Portable uint8_t and friends not available from stdint.h on this platform */
-#include <windows.h>
-
- 
-#define SYSTEM_MEMALIGN			sizeof (unsigned int)
-
-
-typedef unsigned int			uintptr_t ;
-typedef int						intptr_t ;
-typedef unsigned int			uint32_t ;
-typedef unsigned short			uint16_t ;
-typedef unsigned char			uint8_t ;
-typedef int						int32_t ;
-typedef short					int16_t ;
-typedef char					int8_t ;
-
-
-/**
- * Architecture-specific types.
- * Most of these are available from stdint.h on this platform, which is
- * included above.
- */
-#define POINTER					void *
-
- 
-#define ATOM_TLS				HATOMVM_CONTEXT	context ;
-
-
-#endif /* __ATOM_USER_H__ */

ports/avr/Makefile

@@ -15,7 +15,7 @@ CC=/usr/bin/avr-gcc
 OBJCOPY=/usr/bin/avr-objcopy
 SIZE=/usr/bin/avr-size
 UISP=/usr/bin/uisp
-SIMAVR=/tmp/run_avr
+SIMAVR=/usr/local/bin/simavr
 
 # Modify this to the device name of the UART used for UISP
 UISP_DEV=/dev/ttyUSB0
@@ -36,7 +36,7 @@ PART=atmega16
 BUILD_DIR=build
 
 # Port/application object files
-APP_OBJECTS = atomport.o uart.o tests-main.o
+APP_OBJECTS = atomport.o atomport-private.o uart.o tests-main.o
 APP_ASM_OBJECTS = atomport-asm.o
 
 # Kernel object files

ports/avr/atomport-private.c

@@ -0,0 +1,90 @@
+#include <avr/interrupt.h>
+
+#include "atom.h"
+#include "atomport-private.h"
+
+/**
+ * \b avrInitSystemTickTimer
+ *
+ * Initialise the system tick timer. Uses the AVR's timer1 facility.
+ *
+ * @return None
+ */
+void avrInitSystemTickTimer ( void )
+{
+    /* Set timer 1 compare match value for configured system tick,
+     * with a prescaler of 256. We will get a compare match 1A
+     * interrupt on every system tick, in which we must call the
+     * OS's system tick handler. */
+    OCR1A = (AVR_CPU_HZ / 256 / SYSTEM_TICKS_PER_SEC);
+
+    /* Enable compare match 1A interrupt */
+#ifdef TIMSK
+    TIMSK = _BV(OCIE1A);
+#else
+    TIMSK1 = _BV(OCIE1A);
+#endif
+
+    /* Set prescaler 256 */
+    TCCR1B = _BV(CS12) | _BV(WGM12);
+}
+
+
+/**
+ *
+ * System tick ISR.
+ *
+ * This is responsible for regularly calling the OS system tick handler.
+ * The system tick handler checks if any timer callbacks are necessary,
+ * and runs the scheduler.
+ *
+ * The compiler automatically saves all registers necessary before calling
+ * out to a C routine. This will be (at least) R0, R1, SREG, R18-R27 and
+ * R30/R31.
+ *
+ * The system may decide to schedule in a new thread during the call to
+ * atomTimerTick(), in which case around half of the thread's context will
+ * already have been saved here, ready for when we return here when the
+ * interrupted thread is scheduled back in. The remaining context will be
+ * saved by the context switch routine.
+ *
+ * As with all interrupts, the ISR should call atomIntEnter() and
+ * atomIntExit() on entry and exit. This serves two purposes:
+ *
+ * a) To notify the OS that it is running in interrupt context
+ * b) To defer the scheduler until after the ISR is completed
+ *
+ * We defer all scheduling decisions until after the ISR has completed
+ * in case the interrupt handler makes more than one thread ready.
+ *
+ * @return None
+ */
+ISR (TIMER1_COMPA_vect)
+{
+    /* Call the interrupt entry routine */
+    atomIntEnter();
+
+    /* Call the OS system tick handler */
+    atomTimerTick();
+
+    /* Call the interrupt exit routine */
+    atomIntExit(TRUE);
+}
+
+
+/**
+ *
+ * Default (no handler installed) ISR.
+ *
+ * Installs a default handler to be called if any interrupts occur for
+ * which we have not registered an ISR. This is empty and has only been
+ * included to handle user-created code which may enable interrupts. The
+ * core OS does not enable any interrupts other than the system timer
+ * tick interrupt.
+ *
+ * @return None
+ */
+ISR (BADISR_vect)
+{
+    /* Empty */
+}

ports/avr/atomport-private.h

@@ -31,9 +31,21 @@
 #define __ATOM_PORT_PRIVATE_H
 
 /* CPU Frequency */
+#ifdef F_CPU
+#define AVR_CPU_HZ          F_CPU
+#else
 #define AVR_CPU_HZ          1000000
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /* Function prototypes */
 void avrInitSystemTickTimer ( void );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __ATOM_PORT_PRIVATE_H */

ports/avr/atomport.c

@@ -28,10 +28,7 @@
  */
 
 
-#include <avr/interrupt.h>
-
 #include "atom.h"
-#include "atomport-private.h"
 
 
 /** Forward declarations */
@@ -111,8 +108,9 @@ static void thread_shell (void)
         curr_tcb->entry_point(curr_tcb->entry_param);
     }
 
-    /* Not reached - threads should never return from the entry point */
-
+    /* Thread has run to completion: remove it from the ready list */
+    curr_tcb->terminated = TRUE;
+    atomSched (FALSE);
 }
 
 
@@ -267,89 +265,3 @@ void archThreadContextInit (ATOM_TCB *tcb_ptr, void *stack_top, void (*entry_poi
 
 }
 
-
-/**
- * \b avrInitSystemTickTimer
- *
- * Initialise the system tick timer. Uses the AVR's timer1 facility.
- *
- * @return None
- */
-void avrInitSystemTickTimer ( void )
-{
-    /* Set timer 1 compare match value for configured system tick,
-     * with a prescaler of 256. We will get a compare match 1A
-     * interrupt on every system tick, in which we must call the
-     * OS's system tick handler. */
-    OCR1A = (AVR_CPU_HZ / 256 / SYSTEM_TICKS_PER_SEC);
-
-    /* Enable compare match 1A interrupt */
-#ifdef TIMSK
-    TIMSK = _BV(OCIE1A);
-#else
-    TIMSK1 = _BV(OCIE1A);
-#endif
-
-    /* Set prescaler 256 */
-    TCCR1B = _BV(CS12) | _BV(WGM12);
-}
-
-
-/**
- *
- * System tick ISR.
- *
- * This is responsible for regularly calling the OS system tick handler.
- * The system tick handler checks if any timer callbacks are necessary,
- * and runs the scheduler.
- *
- * The compiler automatically saves all registers necessary before calling
- * out to a C routine. This will be (at least) R0, R1, SREG, R18-R27 and
- * R30/R31.
- *
- * The system may decide to schedule in a new thread during the call to
- * atomTimerTick(), in which case around half of the thread's context will
- * already have been saved here, ready for when we return here when the
- * interrupted thread is scheduled back in. The remaining context will be
- * saved by the context switch routine.
- *
- * As with all interrupts, the ISR should call atomIntEnter() and
- * atomIntExit() on entry and exit. This serves two purposes:
- *
- * a) To notify the OS that it is running in interrupt context
- * b) To defer the scheduler until after the ISR is completed
- *
- * We defer all scheduling decisions until after the ISR has completed
- * in case the interrupt handler makes more than one thread ready.
- *
- * @return None
- */
-ISR (TIMER1_COMPA_vect)
-{
-    /* Call the interrupt entry routine */
-    atomIntEnter();
-
-    /* Call the OS system tick handler */
-    atomTimerTick();
-
-    /* Call the interrupt exit routine */
-    atomIntExit(TRUE);
-}
-
-
-/**
- *
- * Default (no handler installed) ISR.
- *
- * Installs a default handler to be called if any interrupts occur for
- * which we have not registered an ISR. This is empty and has only been
- * included to handle user-created code which may enable interrupts. The
- * core OS does not enable any interrupts other than the system timer
- * tick interrupt.
- *
- * @return None
- */
-ISR (BADISR_vect)
-{
-    /* Empty */
-}

ports/avr/uart.h

@@ -13,6 +13,9 @@
 
 #include "atom.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /*
  * Perform UART startup initialization.
@@ -23,3 +26,7 @@ int	uart_init(uint32_t baudrate);
  * Send one character to the UART.
  */
 int	uart_putchar(char c, FILE *stream);
+
+#ifdef __cplusplus
+}
+#endif

ports/cortex-m/Makefile

@@ -0,0 +1,395 @@
+################################################
+# Toplevel makefile for all Cortex-M targets   #
+################################################
+
+ifeq ($(V),)
+    Q := @
+    # Do not print "Entering directory ...".
+    MAKEFLAGS += --no-print-directory
+endif
+
+# Use the size optimised nano version of newlib.
+# This usually is the version of newlib you want to use, although it has some
+# limitations, like printf not having support for floating point vars.
+# This relies on your newlib installation to provide a working nano.specs
+# file. On Debian you will need at least version 2.1.0+git20141201.db59ff3-2
+# of package libnewlib-arm-none-eabi
+USE_NANO    := true
+
+# Debian's libnewlib-arm-none-eabi package version 2.2.0+git20150830.5a3d536-1
+# ships with a buggy nano.specs file that does not set up a proper include
+# path for finding the nano version of newlib.h.
+# Also, the nano version has been built with the -fshort-wchar option, making
+# it incompatible with object files using the standard ABI. By enabling this
+# option atomthreads and libopencm3 will also be compiled with -fshort-wchar.
+#FIX_DEBIAN  := true
+
+# Build directory
+ifdef O
+    build_dir=$(shell readlink -f $(O))
+else
+    build_dir=$(CURDIR)/build
+endif
+
+# Source directory
+src_dir=$(CURDIR)
+
+# Clean object list before including board makefile
+objs := 
+aobjs :=
+
+# set default board if none is given
+ifeq ($(BOARD),)
+    BOARD = nucleo-f103rb
+endif
+
+include $(src_dir)/boards/$(BOARD)/Makefile.include
+
+# Make sure target MCU is set
+ifndef TARGET
+    $(error TARGET undefined)
+endif
+
+# Configure toolchain
+CROSS_COMPILE   ?=  arm-none-eabi-
+
+CC      := $(CROSS_COMPILE)gcc
+CXX     := $(CROSS_COMPILE)g++
+LD      := $(CROSS_COMPILE)gcc
+AR      := $(CROSS_COMPILE)ar
+AS      := $(CROSS_COMPILE)as
+OBJCOPY := $(CROSS_COMPILE)objcopy
+OBJDUMP := $(CROSS_COMPILE)objdump
+GDB     := $(CROSS_COMPILE)gdb
+STFLASH  = $(shell which st-flash)
+
+LDSCRIPT    ?= linker/$(TARGET).ld
+
+# Enable stack-checking. WARNING: the full automated test suite currently
+# requires a little over 1KB RAM with stack-checking enabled. If you are 
+# using a device with 1KB internal SRAM and no external SRAM then you
+# must disable stack-checking to run all of the automated tests.
+#STACK_CHECK=true
+
+# Location of atomthreads sources
+board_dir=$(src_dir)/boards/$(BOARD)
+common_dir=$(src_dir)/common
+kernel_dir=$(src_dir)/../../kernel
+tests_dir=$(src_dir)/../../tests
+
+# Check if user wants to use external opencm3 lib or if we have to build
+# it ourselves
+ifeq ($(OPENCM3_DIR),)
+    OPENCM3_DIR = $(src_dir)/libopencm3
+    build_lib = true
+endif
+
+ifneq ($(V),)
+    $(info Using $(OPENCM3_DIR) as path to opencm3 library)
+endif
+
+# Object files needed by all applications
+objs += atomport.o 
+objs += atomport-asm.o 
+
+# Kernel object files
+objs += atomkernel.o 
+objs += atomsem.o 
+objs += atommutex.o 
+objs += atomtimer.o 
+objs += atomqueue.o
+
+# Collection of built objects (excluding test applications)
+build_objs  = $(foreach obj,$(objs),$(build_dir)/$(obj))
+
+# Object needed by all test applications, but not user apps
+tmobjs = tests-main.o
+build_tmobjs     = $(foreach obj,$(tmobjs),$(build_dir)/$(obj))
+build_tmobjs    += $(build_objs)
+
+# Set up search paths for libopencm3
+INCLUDE_DIR = $(OPENCM3_DIR)/include
+LIB_DIR     = $(OPENCM3_DIR)/lib
+SCRIPT_DIR  = $(OPENCM3_DIR)/scripts
+
+# GCC flags
+CFLAGS       =  -Os -g
+CFLAGS      += -Wall -Werror
+CFLAGS      += -Wredundant-decls -Wstrict-prototypes
+CFLAGS      += -fno-common -ffunction-sections -fdata-sections
+
+# Enable stack-checking (disable if not required)
+ifeq ($(STACK_CHECK),true)
+    CFLAGS  += -DATOM_STACK_CHECKING -DTESTS_LOG_STACK_USAGE
+endif
+
+# C & C++ preprocessor common flags
+CPPFLAGS    += -MD
+CPPFLAGS    += -Wall -Wundef -Werror
+CPPFLAGS    += -I$(INCLUDE_DIR) $(DEFS)
+CPPFLAGS    += -I$(board_dir) -I$(common_dir) -I$(src_dir) -I$(kernel_dir) -I$(tests_dir)
+
+# Assembler flags
+ASFLAGS     += -D__ASSEMBLY__ 
+ASFLAGS     += -D__NEWLIB__
+
+# Linker flags
+LDFLAGS     += --static -nostartfiles
+LDFLAGS     += -L$(LIB_DIR)
+LDFLAGS     += -T$(LDSCRIPT)
+LDFLAGS     += -Wl,-Map=$(build_dir)/$(*).map
+LDFLAGS     += -Wl,--gc-sections
+LDFLAGS     += -Wl,--fatal-warnings
+ifeq ($(V),99)
+LDFLAGS     += -Wl,--print-gc-sections
+endif
+
+## Used libraries
+# Target specific version libopencm3
+LDLIBS		+= -l$(LIBNAME)
+
+## Gather newlib libraries and set up specfiles.
+NEWLIBS	    += -lc -lgcc
+
+ifneq ($(BOARD),qemu)
+ifeq ($(USE_NANO),true)
+SPECS       := -specs=nano.specs
+
+ifeq ($(FIX_DEBIAN),true)
+SPECS       += -I/usr/include/newlib/nano
+LOCM3_FLAGS += -fshort-wchar
+CFLAGS      += -fshort-wchar
+endif
+endif
+
+# Uncomment to link against libnosys if you do not want to use the provided
+# stubs.
+# Be advised that heap management will probably break in interesting ways.
+# This is because libnosys' standard _sbrk() expects the stack to start at 
+# the top end of memory while the threads' stacks are positioned inside 
+# the BSS.
+#NEWLIBS    += -lnosys
+
+else
+# Special LDLIBS for qemu target to enable semi-hosting. 
+# TODO: Check if this is also useful for real hardware  
+NEWLIBS     += -lrdimon
+SPECS       := -specs=rdimon.specs
+endif
+
+# add all required newlib libraries as a group
+LDLIBS      += -Wl,--start-group $(NEWLIBS) -Wl,--end-group
+
+.PHONY: all
+all: build_all
+
+# Generate a direct make target for a test application 
+define build_test
+.PHONY: $(1)
+$(1): $(build_dir)/$(1).elf
+endef
+
+# Target application filenames .elf for each test object
+tobjs = $(notdir $(patsubst %.c,%.o,$(wildcard $(tests_dir)/*.c)))
+telfs = $(patsubst %.o,%.elf,$(tobjs))
+tbins = $(patsubst %.o,%.bin,$(tobjs))
+thexs = $(patsubst %.o,%.hex,$(tobjs))
+build_tobjs = $(foreach tobj,$(tobjs),$(build_dir)/$(tobj))
+build_telfs = $(foreach telf,$(telfs),$(build_dir)/$(telf))
+build_tbins = $(foreach tbin,$(tbins),$(build_dir)/$(tbin))
+build_thexs = $(foreach thex,$(thexs),$(build_dir)/$(thex))
+
+# Add a direct make target for every test app
+$(foreach test,$(patsubst %.o,%,$(tobjs)),$(eval $(call build_test,$(test))))
+
+# Define an explicit target and linker rule for an application not in the
+# test suite. This will be a stand-alone applications located in the board
+# or common directory
+define build_app
+.PHONY: $(1)
+$(1): $(build_dir)/$(1).elf
+
+$(build_dir)/$(1).elf $(build_dir)/$(1).map: $(LIB_DIR)/lib$(LIBNAME).a $(build_dir)/$(1).o $(build_objs) $(LDSCRIPT)
+	$$(Q)mkdir -p `dirname $$@`
+	$$(if $$(Q), @echo " (ELF)       $$(subst $$(build_dir)/,,$$@)")
+	$$(Q)$$(LD) $$(SPECS) $$(LDFLAGS) $$(ARCH_FLAGS) $$(build_objs) $$(build_dir)/$(1).o $(LDLIBS) -o $$@
+endef
+
+# Target application filenames .elf for each user app object
+aelfs  = $(patsubst %.o,%.elf,$(aobjs))
+abins  = $(patsubst %.o,%.bin,$(aobjs))
+ahexs  = $(patsubst %.o,%.hex,$(aobjs))
+build_aobjs = $(foreach aobj,$(aobjs),$(build_dir)/$(aobj))
+build_aelfs = $(foreach aelf,$(aelfs),$(build_dir)/$(aelf))
+build_abins = $(foreach abin,$(abins),$(build_dir)/$(abin))
+build_ahexs = $(foreach ahex,$(ahexs),$(build_dir)/$(ahex))
+
+# add a direct make target for every standalone app
+$(foreach app,$(patsubst %.o,%,$(aobjs)),$(eval $(call build_app,$(app))))
+
+# Build all test and user applications
+all_bins	= $(build_tbins) $(build_abins)
+all_hexs	= $(build_thexs) $(build_ahexs)
+all_elfs	= $(build_telfs) $(build_aelfs)
+all_objs	= $(build_tobjs) $(build_aobjs) $(build_tmobjs)
+
+.PHONY: build_all
+build_all: $(LIB_DIR)/lib$(LIBNAME).a $(all_bins) $(all_hexs) $(all_elfs) $(all_objs) Makefile $(board_dir)/Makefile.include
+
+# Add build dependency for local libopencm3 if no external libopencm3 is used 
+ifeq ($(build_lib),true)
+$(LIB_DIR)/lib$(LIBNAME).a: 
+	$(Q)if [ ! -f libopencm3/Makefile ] ; then \
+		printf "######## ERROR ########\n"; \
+		printf "\tlibopencm3 is not initialized.\n"; \
+		printf "\tPlease run:\n"; \
+		printf "\t$$ git submodule init\n"; \
+		printf "\t$$ git submodule update\n"; \
+		printf "\tbefore running make.\n"; \
+		printf "######## ERROR ########\n"; \
+		exit 1; \
+		fi
+	$(Q)$(MAKE) -C libopencm3 V=$(V) CFLAGS=$(LOCM3_FLAGS)
+endif
+
+$(build_dir)/%.bin: $(build_dir)/%.elf
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (OBJCOPY)   $(subst $(build_dir)/,,$@)")
+	$(Q)$(OBJCOPY) -O binary $< $@
+
+$(build_dir)/%.hex: $(build_dir)/%.elf
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (OBJCOPY)   $(subst $(build_dir)/,,$@)")
+	$(Q)$(OBJCOPY) -O ihex $< $@
+
+$(build_dir)/%.srec: $(build_dir)/%.elf
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (OBJCOPY)   $(subst $(build_dir)/,,$@)")
+	$(Q)$(OBJCOPY) -O srec $< $@
+
+$(build_dir)/%.list: $(build_dir)/%.elf
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (OBJDUMP)   $(subst $(build_dir)/,,$@)")
+	$(Q)$(OBJDUMP) -S $< > $@
+
+# This is the default rule for linking the test suite applications.
+# User applications defined in a board Makefile fragment are linked
+# by an explicitly generated rule.
+$(build_dir)/%.elf $(build_dir)/%.map: $(LIB_DIR)/lib$(LIBNAME).a $(build_dir)/%.o $(build_tmobjs) $(LDSCRIPT)
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (ELF)       $(subst $(build_dir)/,,$@)")
+	$(Q)$(LD) $(SPECS) $(LDFLAGS) $(ARCH_FLAGS) $(build_tmobjs) $(build_dir)/$(*).o $(LDLIBS) -o $@
+
+$(build_dir)/%.o: $(src_dir)/%.S Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (AS)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) $(ASFLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(src_dir)/%.c Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (CC)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(board_dir)/%.S Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (AS)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) $(ASFLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(board_dir)/%.c Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (CC)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(common_dir)/%.S Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (AS)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) $(ASFLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(common_dir)/%.c Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (CC)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(kernel_dir)/%.c Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (CC)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -I`dirname $<` -c $< -o $@
+
+$(build_dir)/%.o: $(tests_dir)/%.c Makefile $(board_dir)/Makefile.include
+	$(Q)mkdir -p `dirname $@`
+	$(if $(Q), @echo " (CC)        $(subst $(build_dir)/,,$@)")
+	$(Q)$(CC) $(SPECS) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -I`dirname $<` -c $< -o $@
+
+# Clean. Remove only atomthread's object files and images
+.PHONY: clean
+clean:
+	rm -rf doxygen-kernel
+	rm -rf doxygen-opencm3
+	rm -rf $(build_dir)
+
+# Real clean. Also clean libopencm3 if it was built in tree
+.PHONY: realclean
+realclean: clean
+ifeq ($(build_lib),true)
+	$(Q)$(MAKE) -C libopencm3 V=$(V) clean
+endif
+
+# Docs
+.PHONY: doxygen
+doxygen:
+	doxygen $(kernel_dir)/Doxyfile
+ifeq ($(build_lib),true)
+	$(Q)$(MAKE) -C libopencm3 V=$(V) doc
+endif
+
+#################################################################################
+# Target flashing recipes "borrowed" from libopencm3-examples. Mostly untested. #
+#################################################################################
+
+%.stlink-flash: $(build_dir)/%.bin
+	$(if $(Q), @echo " (FLASH)     $(subst $(build_dir)/,,$<)")
+	$(Q)$(STFLASH) write $< 0x8000000
+
+ifeq ($(STLINK_PORT),)
+ifeq ($(BMP_PORT),)
+ifeq ($(OOCD_SERIAL),)
+%.flash: $(build_dir)/%.hex
+	$(if $(Q), @echo " (FLASH)     $(subst $(build_dir)/,,$<)")
+	@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
+	-$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
+		    -f board/$(OOCD_BOARD).cfg \
+		    -c "init" -c "reset init" \
+		    -c "flash write_image erase $<" \
+		    -c "reset" \
+		    -c "shutdown" $(NULL)
+else
+%.flash: $(build_dir)/%.hex
+	$(if $(Q), @echo " (FLASH)     $(subst $(build_dir)/,,$<)")
+	@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
+	-$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
+		    -f board/$(OOCD_BOARD).cfg \
+		    -c "ft2232_serial $(OOCD_SERIAL)" \
+		    -c "init" -c "reset init" \
+		    -c "flash write_image erase $<" \
+		    -c "reset" \
+		    -c "shutdown" $(NULL)
+endif
+else
+%.flash: $(build_dir)/%.elf
+	$(if $(Q), @echo " (GDB)       $(subst $(build_dir)/,,$<)")
+	$(Q)$(GDB) --batch \
+		   -ex 'target extended-remote $(BMP_PORT)' \
+		   -x $(SCRIPT_DIR)/black_magic_probe_flash.scr \
+		   $<
+endif
+else
+%.flash: $(build_dir)/%.elf
+	$(if $(Q), @echo " (GDB)       $(subst $(build_dir)/,,$<)")
+	$(Q)$(GDB) --batch \
+		   -ex 'target extended-remote $(STLINK_PORT)' \
+		   -x $(SCRIPT_DIR)/stlink_flash.scr \
+		   $<
+endif
+
+# Include auto-generated dependencies
+-include $(all_objs:.o=.d)

ports/cortex-m/README.md

@@ -0,0 +1,238 @@
+# ARM Cortex-M Port
+
+Author: Tido Klaassen <tido@4gh.eu>
+
+License: BSD Revised. Needs libopencm3, which is LGPLv3.
+
+## Summary and Prerequisites
+This port should run on any Cortex-M0/3/4/4F (M0+ not tested). 
+It uses RedHat's [newlib](https://sourceware.org/newlib/) and [libopencm3]
+(https://github.com/libopencm3/libopencm3). You will also need an ARM compiler
+toolchain. If you want to flash or debug your target, [openocd](http://openocd.org)
+is also a must. For STM32 targets [stlink](https://github.com/texane/stlink)
+might be helpful.
+
+On Debian systems, compiler, newlib and openocd can easily be installed by the
+package manager (untested, not going to set up a new system just to test this):
+
+``` 
+apt-get install gcc-arm-none-eabi binutils-arm-none-eabi
+apt-get install libnewlib-arm-none-eabi libnewlib-dev
+apt-get install openocd
+```
+**N.B.** Usually you will want to compile and link against the size optimised
+"nano" version of newlib. This is done by default. If your version
+of newlib does not support this (Debian's libnewlib package version before
+2.1.0+git20141201.db59ff3-2) you will have to comment out the line
+`USE_NANO := true` in the Makefile or pass `USE_NANO=` as
+a command line option to make.
+
+**N.B.** Debian's libnewlib-arm-none-eabi version 2.2.0+git20150830.5a3d536-1
+ships with broken nano support. To enable necessary workarounds, uncomment
+the line `#FIX_DEBIAN := true` in the Makefile or pass `FIX_DEBIAN=true`
+as a command line option to make.
+If you are using this fix, be advised that when switching between nano
+and regular builds, you will have to do a `make realclean` first.
+
+## Code Layout
+The "classic" port components (code needed for task set-up and context
+switching and the atomport{-private}.h headers) are residing in the
+top level port directory.
+
+There are additional subdirectories:
+
+* **boards** contains subdirectories for specific hardware. Each
+board needs at least a Makefile fragment, which defines certain variables 
+describing the hardware used, as well as a list of extra object files needed.
+There will usually be at least a `board_setup.c`, which contains code to 
+initialise the hardware properly (clocks, UART, systick timer, GPIOs, etc.).
+
+* **common** contains code needed by multiple boards, such as
+stub functions for newlib or routines shared by multiple boards using the
+same family of target MCUs.
+
+* **linker** contains linker script fragments for specific target MCUs. These
+just define the target's memory areas (RAM, Flash) and include libopencm3's
+main linker script for the appropriate chip family.
+
+* **libopencm3** unless you compile and link against an external installation
+of libopencm3, this will be a Git submodule containing, surprise!, libopencm3.
+
+* **build** this is a temporary directory where all object files end up in and
+which will be removed by `make clean`.
+
+## Build Preparation
+Unless you decide to use an external installation of libopencm3, you will have
+to set up the libopencm3 sub-module:
+```
+git submodule init
+git submodule update
+```
+
+## Building and Flashing
+To build the test suite, run
+```
+make BOARD=*yourboard* all
+```
+where *yourboard* is the name of a directory in **boards**. If no BOARD is
+given, it defaults to nucleo-f103rb.
+
+To build with an external libopencm3, run
+```
+make BOARD=*yourboard* OPENCM3_DIR=*/path/to/libopencm3* all
+```
+
+Instead of building the whole test suite you can also just build a specific
+application image by giving its base name. If, for example, you only want
+to build the `queue2` test app, you can do that like this:
+```
+make BOARD=*yourboard* queue2
+```
+ 
+If your board Makefile also sets up the necessary openocd variables, you can
+use it to flash the application image by appending `.flash` to its base name.
+```
+make BOARD=*yourboard* *yourimage*.flash
+```
+
+N.B.: with the ek-lm4f120xl board openocd will report an error after flashing.
+I think it is because it can not handle the changed core clock after the 
+application starts, but I simply can't be bothered to further investigate this.
+The application gets flashed and you can ignore the error.
+
+## Adding New Boards
+To add support for a new board, you will have to provide at least two parts. 
+First, a `Makefile.include` to be pulled in by the main Makefile. Second,
+some set-up code for your specific hardware. If there is no linker script for
+your MCU, you will have to add one, too.
+
+### Board Makefile Fragment
+The main Makefile will include the Makefile.include located in the chosen
+board's sub-directory. This is where you set compile time options and additional
+source files to be used. Here is the one for the nucleo-f103rb:
+
+```
+TARGET          ?= stm32f103rb
+LIBNAME         ?= opencm3_stm32f1
+DEFS            ?= -DSTM32F1
+DEFS            += -DSTD_CON=USART2
+DEFS            += -DMST_SIZE=0x400
+
+FP_FLAGS        ?= -msoft-float
+ARCH_FLAGS      ?= -mthumb -mcpu=cortex-m3 $(FP_FLAGS) -mfix-cortex-m3-ldrd
+
+OOCD            ?= openocd
+OOCD_INTERFACE  ?= stlink-v2-1
+OOCD_BOARD      ?= st_nucleo_f103rb
+
+objs            += board_setup.o
+objs            += stubs.o stm32_con.o
+```
+
+* **TARGET** is the name for the actual MCU used on your board. It will be used
+to locate the linker script file in the `linker` directory by appending
+`.ld` to it.
+
+* **LIBNAME** is the name of the opencm3 library to link your object files
+against.
+
+* **DEFS** are flags that will be appended to the CPPFLAGS. You will at least
+have to define the opencm3 target family (STM32F1 here), so the build process
+will find the right header files to include. If you are using the stub and
+console functions provided in the common directory, you will also have to
+define the reserved main stack size (MST_SIZE) and which UART to use for stdio
+(STD_CON).
+
+* **FP_FLAGS** which floating point format to use. For MCUs without hardware
+support for floating point (M0/3, sometimes 4), use `-msoft-float`,
+otherwise use `-mfloat-abi=hard -mfpu=fpv4-sp-d16`. You could add these 
+directly to `ARCH_FLAGS`, but this way it is easily overridden from the
+make command line.
+
+* **ARCH_FLAGS** specify the instruction (sub)set and CPU type to compile for,
+as well as any quirk tunings needed and the `FP_FLAGS`. These flags are
+handed to preprocessor, compiler, assembler and linker.
+
+The following flags are only used for flashing the target with openocd:
+
+* **OOCD** binary to call. Give full path if it is not in your PATH environment
+variable. 
+
+* **OOCD_INTERFACE** tells open which interface configuration to use
+
+* **OOCD_BOARD** tells openocd which board configuration file to use.
+
+* **objs** here you _append_ object files to include into _all_ binaries
+built for this board. The main Makefile will search for matching source files
+(*.c and *.S) in the main port directory, the board directory and the common
+directory. You will usually have at least a `board_setup.c` specific to
+your hardware and pull in the system and stdio stubs provided in the 
+`common` directory.
+
+* **aobjs** the build system will build one application for each object you 
+add to this variable. It will do so by linking each of these objects with all
+of the kernel-, port- and board-objects (but none of the testsuite-objects). 
+The source for the app-object should be located in either the board or
+common directory and must contain the application's `main()` function.
+The `helloworld.c` file in the common directory is provided as an example.
+
+As you will probably know, variables assigned with the `?=` operator are
+only altered if they have not been already set. This way you can easily test
+different options for a build by providing the variables on the make command
+line.
+
+### Board-Specific Set-up
+All hardware needs to be initialised to some degree before it is ready to run
+atomthread's kernel. At the very least you will have to
+
+1. mask interrupts
+2. set up the main clock and configure the systick timer
+3. configure console UART  
+4. configure GPIOs
+
+(Steps 3. and 4. might be optional if you do not plan to let your board
+interact with the outside world in any way...)
+
+The test suite programs expect your board set-up code to provide a function
+named `int board_setup(void)` to perform this tasks.
+
+### Linker Script
+If you are using an hitherto unknown target MCU, you will have to provide a
+linker script for it in the `linker` directory. The script's name must
+be the same as given to the `TARGET` variable in your Makefile.include,
+with the extension `.ld` added. It is recommended that you just define
+your MCU's memory regions and include libopencm3's linker file for your
+target's product family. Please look at the provided linker files for examples
+on how to do this.
+
+## Port Internals
+The Cortex-M port is different from the other architectures insofar as it makes
+use of two particular features. First, it uses separate stacks for thread and
+exception context. When the core enters exception mode, it first pushes xPSR,
+PC, LR, r0-r3 and r12 on the currently active stack (probably the thread stack
+in PSP) and then switches to the main stack stored in MSP. It also stores a
+special EXC_RETURN code in LR which, when loaded into the PC, will determine
+if on return program execution continues to use the MSP or switches over to 
+the PSP and, on cores with an FPU, whether FPU registers need to be restored.
+The Cortex-M also implements a nested vectored interrupt controller (NVIC),
+which means that a running ISR may be pre-empted by an exception of higher
+priority.
+
+The use of separate stacks for thread and exception context has the nice
+implication that you do not have to reserve space on every task's stack for 
+possible use by ISRs. But it also means that it breaks atomthreads concept 
+of simply swapping task stacks, regardless of if atomSched() was called from
+thread or interrupt context. We would have to implement different 
+archContextSwitch() functions called from thread or exception context and
+also do messy stack manipulations depending on whether the task to be
+scheduled in was scheduled out in in the same context or not. Yuck!
+And don't get me started on nested exceptions calling atomIntExit()...   
+
+This is where the second feature comes handy, the PendSV mechanism.
+PendSV is an asynchronous exception with the lowest possible priority, which
+means that, when triggered, it will be called by the NVIC if there are no
+other exceptions pending or running. We use it by having archContextSwitch()
+set up a pointer to the TCB that should be scheduled in and then trigger the
+PendSv exception. As soon as program flow leaves the critical section or 
+performs the outermost exception return, the pend_sv_handler() will be called
+and the thread context switch takes place.

ports/cortex-m/asm_offsets.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -26,21 +26,12 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
-#ifndef __MODULES_H__
-#define __MODULES_H__
 
-/*
- *  Module definitions to use with the Stellaris LM3S6965 Microcontroller
- */
+#ifndef __ATOM_PORT_ASM_OFFSETS_H
+#define __ATOM_PORT_ASM_OFFSETS_H
 
+#define CTX_RUN_OFF     0
+#define CTX_NEXT_OFF    4
+#define CTX_REENT_OFF   8
 
-#include "LPC17xx.h"
-#include "drivers/lpc17xx_uart.h"
-
-
-/* Function prototypes */
-extern int              low_level_init (void) ;
-extern void             dbg_format_msg (char *format, ...)  ;
-extern void             dbg_fault_handler (unsigned int * hardfault_args) ;
-
-#endif /* __MODULES_H__ */
+#endif /* __ATOM_PORT_ASM_OFFSETS_H */

ports/cortex-m/atomport-asm.S

@@ -0,0 +1,391 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "asm_offsets.h"
+
+.syntax unified
+
+/**
+ * Create more readable defines for usable intruction set and FPU
+ */
+#undef THUMB_2
+#undef WITH_FPU
+
+#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
+#define THUMB_2
+#endif
+
+#if defined(__VFP_FP__) && !defined(__SOFTFP__)
+#define WITH_FPU
+#endif
+
+/**
+ * Extern variables needed for context switching and first thread restore
+ */
+.extern CTX_SW_NFO
+.extern vector_table
+
+#if defined(__NEWLIB__)
+/**
+ * When using newlib, reentry context needs to be updated on task switch
+ */
+.extern _impure_ptr
+#endif
+
+/**
+ * Some bit masks and registers used
+ */
+.equ FPU_USED,      0x00000010
+.equ SCB_ICSR,      0xE000ED04
+.equ PENDSVCLR,     0x08000000
+
+.text
+
+.global _archFirstThreadRestore
+.func   _archFirstThreadRestore
+.type   _archFirstThreadRestore,%function
+.thumb_func
+_archFirstThreadRestore:
+    /**
+     * Disable interrupts. They should be disabled anyway, but just
+     * to make sure...
+     */
+    movs    r1,         #1
+    msr     PRIMASK,    r1
+
+    /**
+     * Reset main stack pointer to initial value, which is the first entry
+     * in the vector table.
+     */
+    ldr     r1,         = vector_table
+    ldr     r1,         [r1, #0]
+    msr     MSP,        r1
+    
+    /* Update ctx_switch_info, set this thread as both running and next */
+    ldr     r1,         = CTX_SW_NFO
+    str     r0,         [r1, #CTX_RUN_OFF]
+    str     r0,         [r1, #CTX_NEXT_OFF]
+
+#if defined(__NEWLIB__)
+    /**
+     * Store the thread's reentry context address in _impure_ptr. This
+     * will have been stored in ctx_switch_info.reent.
+     */ 
+    ldr     r2,         [r1, #CTX_REENT_OFF]
+    ldr     r3,         = _impure_ptr
+    str     r2,         [r3, #0]
+#endif
+
+    /* Get thread stack pointer from tcb. Conveniently the first element */
+    ldr     r1,         [r0, #0]
+    msr     PSP,        r1
+
+    /**
+     * Set bit #1 in CONTROL. Causes switch to PSP, so we can work directly
+     * with SP now and use pop/push.
+     */
+    movs    r1,         #2
+    mrs     r2,         CONTROL
+    orrs    r2,         r2,     r1
+    msr     CONTROL,    r2
+
+    /**
+     * Initialise thread's register context from its stack frame. Since this
+     * function gets called only once at system start up, execution time is
+     * not critical. We can get away with using only Thumb-1 instructions that
+     * will work on all Cortex-M devices.
+     *
+     * Initial stack looks like this:
+     * xPSR
+     * PC
+     * lr
+     * r12
+     * r3
+     * r2
+     * r1
+     * r0
+     * exc_ret <- ignored here
+     * r11
+     * r10
+     * r9
+     * r8
+     * r7
+     * r6
+     * r5
+     * r4 <- thread's saved_sp points here
+     */
+
+    /**
+     *
+     * Move SP to position of r8 and restore high registers by loading
+     * them to r4-r7 before moving them to r8-r11
+     */
+    add     SP,         #16
+    pop     {r4-r7}
+    mov     r8,         r4
+    mov     r9,         r5
+    mov     r10,        r6
+    mov     r11,        r7
+
+    /* move SP back to top of stack and load r4-r7 */
+    sub     SP,         #32
+    pop     {r4-r7}
+
+    /*load r12, lr, pc and xpsr to r0-r3 and restore r12 and lr */
+    add     SP,         #36
+    pop     {r0-r3}
+    mov     r12,        r0
+    mov     lr,         r1
+
+    /**
+     * r2 contains the PC and r3 APSR, SP is now at the bottom of the stack. We
+     * can't initialise APSR now because we will have to do a movs later when
+     * enabling interrupts, so r3 must not be touched. We also need an extra
+     * register holding the value that will be moved to PRIMASK. To do this,
+     * we build a new stack containing only the initial values of r2, r3
+     * and pc. In the end this will be directly popped into the registers,
+     * finishing the thread restore and branching to the thread's entry point.
+     */
+
+    /* Save PC value */
+    push    {r2}
+
+    /* Move values for r2 and r3 to lie directly below value for pc */
+    sub     SP,         #20
+    pop     {r1-r2}
+    add     SP,         #12
+    push    {r1-r2}
+
+    /* Load values for r0 and r1 from stack */
+    sub     SP,         #20
+    pop     {r0-r1}
+
+    /* Move SP to start of our new r2,r3,pc mini stack */
+    add     SP,         #12
+
+    /* Restore xPSR and enable interrupts */
+    movs    r2,         #0
+    msr     APSR_nzcvq, r3
+    msr     PRIMASK,    r2
+    
+    /* Pop r2,r3,pc from stack, thereby jumping to thread entry point */
+    pop     {r2,r3,pc}
+    nop
+
+.size   _archFirstThreadRestore, . - _archFirstThreadRestore
+.endfunc
+
+.global pend_sv_handler
+.func   pend_sv_handler
+.type   pend_sv_handler,%function
+.thumb_func
+pend_sv_handler:
+    /**
+     * Disable interrupts. No need to check if they were enabled because,
+     * well, we're an interrupt handler. Duh...
+     */
+    movs    r0,         #1
+    msr     PRIMASK,    r0
+    
+    /**
+     * Clear PendSv pending bit. There seems to exist a hardware race condition
+     * in the NVIC that can prevent automatic clearing of the PENDSVSET. See
+     * http://embeddedgurus.com/state-space/2011/09/whats-the-state-of-your-cortex/
+     */
+     ldr    r0,         = SCB_ICSR
+     ldr    r1,         = PENDSVCLR
+     str    r1,         [r0, #0]
+
+    /**
+     * Check if running and next thread are really different.
+     * From here on we have
+     * r0 = &ctx_switch_info
+     * r1 = ctx_switch_info.running_tcb
+     * r2 = ctx_switch_info.next_tcb
+     *
+     * If r1 == r2 we can skip the context switch. This may theoretically
+     * happen if the running thread gets scheduled out and in again by
+     * multiple nested or tail-chained ISRs before the PendSv handler
+     * gets called.
+     */
+    ldr     r0,         = CTX_SW_NFO
+    ldr     r1,         [r0, #CTX_RUN_OFF]
+    ldr     r2,         [r0, #CTX_NEXT_OFF]
+    cmp     r1,         r2
+    beq     no_switch
+
+    /**
+     * Copy running thread's process stack pointer to r3 and use it to push
+     * the thread's register context on its stack
+     */
+    mrs     r3,         PSP
+
+#if defined(THUMB_2)
+    /**
+     * Save old thread's context on Cortex-M[34]
+     */
+
+#if defined(WITH_FPU)
+    /* Check if FPU was used by thread and store registers if necessary */
+    tst     lr,         FPU_USED
+    it      eq
+    vstmdbeq  r3!,      {s16-s31}
+
+    /**
+     * TODO: Defer stacking FPU context by disabling FPU and using a
+     * fault handler to store the FPU registers if another thread
+     * tries using it
+     */
+#endif // WITH_FPU
+    
+    /* Push running thread's remaining registers on stack */
+    stmdb   r3!,        {r4-r11, lr}
+
+#else // !THUMB2
+
+    /**
+     * Save old thread's register context on Cortex-M0.
+     * Push running thread's remaining registers on stack.
+     * Thumb-1 can use stm only on low registers, so we
+     * have to do this in two steps.
+     */
+
+    /* Reserve space for r8-r11 + exc_return before storing r4-r7 */
+    subs    r3,         r3,     #36
+    stmia   r3!,        {r4-r7}
+
+    /**
+     * Move r8-r11 to low registers and use store multiple with automatic
+     * post-increment to push them on the stack
+     */
+    mov     r4,         r8
+    mov     r5,         r9
+    mov     r6,         r10
+    mov     r7,         r11
+    stmia   r3!,        {r4-r7}
+
+    /**
+     * Move lr (contains the exc_return code) to low registers and store it
+     * on the stack.
+     */
+    mov     r4,         lr
+    str     r4,         [r3, #0]
+
+    /* Re-adjust r3 to point at top of stack */
+    subs    r3,         r3, #32
+#endif // !THUMB_2
+    /**
+     * Address of running TCB still in r1. Store thread's current stack top
+     * into its sp_save_ptr, which is the struct's first element.
+     */
+    str     r3,         [r1, #0]
+    
+    /**
+     * ctx_switch_info.next_tcb is going to become ctx_switch_info.running_tcb,
+     * so we update the pointer.
+     */
+    str     r2,         [r0, #CTX_RUN_OFF]
+    
+#if defined(__NEWLIB__)
+    /**
+     * Store the thread's reentry context address in _impure_ptr. This
+     * will have been stored in ctx_switch_info.reent.
+     */ 
+    ldr     r4,         [r0, #CTX_REENT_OFF]
+    ldr     r3,         = _impure_ptr
+    str     r4,         [r3, #0]
+#endif
+
+    /**
+     * Fetch next thread's stack pointer from its TCB's sp_save_ptr and restore
+     * the thread's register context.
+     */
+    ldr     r3,         [r2, #0]
+
+#if defined(THUMB_2)
+
+    /* Cortex-M[34], restore thread's task stack frame */
+    ldmia   r3!,        {r4-r11, lr}
+
+#if defined(WITH_FPU)
+    /**
+     * Check if FPU was used by new thread and restore registers if necessary.
+     */
+    tst     lr,         FPU_USED
+    it      eq
+    vldmiaeq  r3!,      {s16-s31}
+
+    /**
+     * TODO: only restore FPU registers if FPU was used by another thread
+     * between this thread being scheduled out and now.
+     */
+#endif // WITH_FPU
+#else // !THUMB_2
+
+    /**
+     * Thread restore for Cortex-M0
+     * Restore thread's task stack frame. Because thumb 1 only supports
+     * load multiple on low register, we have to do it in two steps and
+     * adjust the stack pointer manually.
+     */
+
+    /* Restore high registers */
+    adds    r3,         r3, #16
+    ldmia   r3!,        {r4-r7}
+    mov     r8,         r4
+    mov     r9,         r5
+    mov     r10,        r6
+    mov     r11,        r7
+
+    /* Restore lr */
+    ldr     r4,         [r3, #0]
+    mov     lr,         r4
+    subs    r3,         r3, #32
+
+    /**
+     * Restore r4-r7 and adjust r3 to point at the top of the exception
+     * stack frame.
+     */
+    ldmia   r3!,        {r4-r7}
+    adds    r3,         r3, #20
+#endif // !THUMB_2
+
+    /* Set process stack pointer to new thread's stack*/
+    msr     PSP,        r3
+
+no_switch:
+    /* Re-enable interrupts */
+    movs    r0,         #0
+    msr     PRIMASK,    r0
+    
+    /* Return to new thread */
+    bx      lr
+    nop
+.size   pend_sv_handler, . - pend_sv_handler
+.endfunc

ports/cortex-m/atomport-private.h

@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ATOMPORT_PRIVATE_H_
+#define __ATOMPORT_PRIVATE_H_
+
+#include "atomport.h"
+#include "atom.h"
+
+/**
+ * context saved automagically by exception entry
+ */
+struct isr_stack {
+        uint32_t r0;
+        uint32_t r1;
+        uint32_t r2;
+        uint32_t r3;
+        uint32_t r12;
+        uint32_t lr;
+        uint32_t pc;
+        uint32_t psr;
+} __attribute__((packed));
+
+struct isr_fpu_stack {
+        uint32_t s0;
+        uint32_t s1;
+        uint32_t s2;
+        uint32_t s3;
+        uint32_t s4;
+        uint32_t s5;
+        uint32_t s6;
+        uint32_t s7;
+        uint32_t s8;
+        uint32_t s9;
+        uint32_t s10;
+        uint32_t s11;
+        uint32_t s12;
+        uint32_t s13;
+        uint32_t s14;
+        uint32_t s15;
+        uint32_t fpscr;
+} __attribute__((packed));
+
+/**
+ *  remaining context saved by task switch ISR
+ */
+struct task_stack {
+        uint32_t r4;
+        uint32_t r5;
+        uint32_t r6;
+        uint32_t r7;
+        uint32_t r8;
+        uint32_t r9;
+        uint32_t r10;
+        uint32_t r11;
+        uint32_t exc_ret;
+} __attribute__((packed));
+
+struct task_fpu_stack {
+        uint32_t s16;
+        uint32_t s17;
+        uint32_t s18;
+        uint32_t s19;
+        uint32_t s20;
+        uint32_t s21;
+        uint32_t s22;
+        uint32_t s23;
+        uint32_t s24;
+        uint32_t s25;
+        uint32_t s26;
+        uint32_t s27;
+        uint32_t s28;
+        uint32_t s29;
+        uint32_t s30;
+        uint32_t s31;
+} __attribute__((packed));
+
+/**
+ * Info needed by pend_sv_handler used for delayed task switching.
+ * Running_tcb is a pointer to the TCB currently running (gosh, really?!)
+ * next_tcb is a pointer to a TCB that should be running.
+ * archContextSwitch() will update next_tcb and trigger a pend_sv. The
+ * pend_sv_handler will be called as soon as all other ISRs have returned,
+ * do the real context switch and update running_tcb.
+ */
+struct task_switch_info {
+    volatile struct atom_tcb *running_tcb;
+    volatile struct atom_tcb *next_tcb;
+#if defined(__NEWLIB__)
+    struct _reent *reent;
+#endif
+} __attribute__((packed));
+
+#endif /* __ATOMPORT_PRIVATE_H_ */

ports/cortex-m/atomport-tests.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -27,24 +27,21 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef __ATOMPORT_TEST_H__
-#define __ATOMPORT_TEST_H__
+#ifndef __ATOM_PORT_TESTS_H
+#define __ATOM_PORT_TESTS_H
 
 /* Include Atomthreads kernel API */
+#include <stdio.h>
 #include "atom.h"
 
-extern void         dbg_format_msg (char *format, ...) ;
+/* Default thread stack size (in bytes) */
+#define TEST_THREAD_STACK_SIZE  1024
 
+/* Uncomment to enable logging of stack usage to UART */
+/* #define TESTS_LOG_STACK_USAGE */
 
-#define TEST_THREAD_STACK_SIZE      1024
-#define ATOMLOG                     dbg_format_msg
-#define _STR(x)                     x
+#define ATOMLOG printf
+#define _STR
 
+#endif /* __ATOM_PORT_TESTS_H */
 
-
-
-/* API for starting each test */
-extern uint32_t test_start (void);
-
-
-#endif /* __ATOMPORT_TEST_H__ */

ports/cortex-m/atomport.c

@@ -0,0 +1,236 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/cm3/scb.h>
+#include <libopencm3/cm3/sync.h>
+
+#include "atomport.h"
+#include "atomport-private.h"
+#include "asm_offsets.h"
+
+static void thread_shell(void);
+
+struct task_switch_info ctx_switch_info asm("CTX_SW_NFO") =
+{
+    .running_tcb = NULL,
+    .next_tcb    = NULL,
+};
+
+extern void _archFirstThreadRestore(ATOM_TCB *);
+void archFirstThreadRestore(ATOM_TCB *new_tcb_ptr)
+{
+#if defined(__NEWLIB__)
+    ctx_switch_info.reent = &(new_tcb_ptr->port_priv.reent);
+    __dmb();
+#endif
+
+    _archFirstThreadRestore(new_tcb_ptr);
+}
+
+/**
+ * We do not perform the context switch directly. Instead we mark the new tcb
+ * as should-be-running in ctx_switch_info and trigger a PendSv-interrupt.
+ * The pend_sv_handler will be called when all other pending exceptions have
+ * returned and perform the actual context switch.
+ * This way we do not have to worry if we are being called from task or
+ * interrupt context, which would mean messing with either main or thread
+ * stack format.
+ *
+ * One difference to the other architectures is that execution flow will
+ * actually continue in the old thread context until interrupts are enabled
+ * again. From a thread context this should make no difference, as the context
+ * switch will be performed as soon as the execution flow would return to the
+ * calling thread. Unless, of course, the thread called atomSched() with
+ * disabled interrupts, which it should not do anyways...
+ */
+void __attribute__((noinline))
+archContextSwitch(ATOM_TCB *old_tcb_ptr __maybe_unused, ATOM_TCB *new_tcb_ptr)
+{
+    if(likely(ctx_switch_info.running_tcb != NULL)){
+        ctx_switch_info.next_tcb = new_tcb_ptr;
+#if defined(__NEWLIB__)
+        ctx_switch_info.reent = &(new_tcb_ptr->port_priv.reent);
+#endif
+        __dmb();
+
+        SCB_ICSR = SCB_ICSR_PENDSVSET;
+    }
+}
+
+void sys_tick_handler(void)
+{
+    /* Call the interrupt entry routine */
+    atomIntEnter();
+
+    /* Call the OS system tick handler */
+    atomTimerTick();
+
+    /* Call the interrupt exit routine */
+    atomIntExit(TRUE);
+}
+
+/**
+ * Put chip into infinite loop if NMI or hard fault occurs
+ */
+void nmi_handler(void)
+{
+    while(1)
+        ;
+}
+
+void hard_fault_handler(void)
+{
+    while(1)
+        ;
+}
+
+
+/**
+ * This function is called when a new thread is scheduled in for the first
+ * time. It will simply call the threads entry point function.
+ */
+static void thread_shell(void)
+{
+    ATOM_TCB *task_ptr;
+
+    /**
+     * We "return" to here after being scheduled in by the pend_sv_handler.
+     * We get a pointer to our TCB from atomCurrentContext()
+     */
+    task_ptr = atomCurrentContext();
+
+    /**
+     * Our thread entry point and parameter are stored in the TCB.
+     * Call it if it is valid
+     */
+    if(task_ptr && task_ptr->entry_point){
+        task_ptr->entry_point(task_ptr->entry_param);
+    }
+
+    /**
+     * Thread returned or entry point was not valid.
+     * Should never happen... Maybe we should switch MCU into debug mode here
+     */
+    while(1)
+        ;
+}
+
+/**
+ * Initialise a threads stack so it can be scheduled in by
+ * archFirstThreadRestore or the pend_sv_handler.
+ */
+void archThreadContextInit(ATOM_TCB *tcb_ptr, void *stack_top,
+                           void (*entry_point)(uint32_t), uint32_t entry_param)
+{
+    struct isr_stack *isr_ctx;
+    struct task_stack *tsk_ctx;
+
+    /**
+     * Do compile time verification for offsets used in _archFirstThreadRestore
+     * and pend_sv_handler. If compilation aborts here, you will have to adjust
+     * the offsets for struct task_switch_info's members in asm-offsets.h
+     */
+    assert_static(offsetof(struct task_switch_info, running_tcb) == CTX_RUN_OFF);
+    assert_static(offsetof(struct task_switch_info, next_tcb) == CTX_NEXT_OFF);
+#if defined(__NEWLIB__)
+    assert_static(offsetof(struct task_switch_info, reent) == CTX_REENT_OFF);
+#endif
+
+    /**
+     * Enforce initial stack alignment
+     */
+    stack_top = STACK_ALIGN(stack_top, STACK_ALIGN_SIZE);
+
+    /**
+     * New threads will be scheduled from an exception handler, so we have to
+     * set up an exception stack frame as well as task stack frame
+     */
+    isr_ctx = stack_top - sizeof(*isr_ctx);
+    tsk_ctx = stack_top - sizeof(*isr_ctx) - sizeof(*tsk_ctx);
+
+#if 0
+    printf("[%s] tcb_ptr: %p stack_top: %p isr_ctx: %p tsk_ctx: %p entry_point: %p, entry_param: 0x%x\n",
+            __func__, tcb_ptr, stack_top, isr_ctx, tsk_ctx, entry_point, entry_param);
+    printf("[%s] isr_ctx->r0: %p isr_ctx->psr: %p tsk_ctx->r4: %p tsk_ctx->lr: %p\n",
+            __func__, &isr_ctx->r0, &isr_ctx->psr, &tsk_ctx->r4, &tsk_ctx->lr);
+#endif
+    /**
+     * We use the exception return mechanism to jump to our thread_shell()
+     * function and initialise the PSR to the default value (thumb state
+     * flag set and nothing else)
+     */
+    isr_ctx->psr = 0x01000000;
+    isr_ctx->pc  = (uint32_t) thread_shell;
+
+    /* initialise unused registers to silly value */
+    isr_ctx->lr  = 0xEEEEEEEE;
+    isr_ctx->r12 = 0xCCCCCCCC;
+    isr_ctx->r3  = 0x33333333;
+    isr_ctx->r2  = 0x22222222;
+    isr_ctx->r1  = 0x11111111;
+    isr_ctx->r0  = 0x00000000;
+
+    /**
+     * We use this special EXC_RETURN code to switch from main stack to our
+     * thread stack on exception return
+     */
+    tsk_ctx->exc_ret = 0xFFFFFFFD;
+
+    /* initialise unused registers to silly value */
+    tsk_ctx->r11 = 0xBBBBBBBB;
+    tsk_ctx->r10 = 0xAAAAAAAA;
+    tsk_ctx->r9  = 0x99999999;
+    tsk_ctx->r8  = 0x88888888;
+    tsk_ctx->r7  = 0x77777777;
+    tsk_ctx->r6  = 0x66666666;
+    tsk_ctx->r5  = 0x55555555;
+    tsk_ctx->r4  = 0x44444444;
+
+    /**
+     * Stack frames have been initialised, save it to the TCB. Also set
+     * the thread's real entry point and param, so the thread shell knows
+     * what function to call.
+     */
+    tcb_ptr->sp_save_ptr = tsk_ctx;
+    tcb_ptr->entry_point = entry_point;
+    tcb_ptr->entry_param = entry_param;
+
+#if defined(__NEWLIB__)
+    /**
+     * Initialise thread's reentry context for newlib
+     */ 
+    _REENT_INIT_PTR(&(tcb_ptr->port_priv.reent));
+#endif
+}
+

ports/cortex-m/atomport.h

@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ATOM_PORT_H
+#define __ATOM_PORT_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <libopencm3/cm3/cortex.h>
+#include <stdlib.h>
+
+/* Required number of system ticks per second (normally 100 for 10ms tick) */
+#define SYSTEM_TICKS_PER_SEC            100
+
+/* Size of each stack entry / stack alignment size (4 bytes on Cortex-M without FPU) */
+#define STACK_ALIGN_SIZE    sizeof(uint32_t)
+
+#define ALIGN(x, a)         ((x + (typeof(x))(a) - 1) & ~((typeof(x))(a) - 1))
+#define PTR_ALIGN(p, a)     ((typeof(p))ALIGN((uint32_t)(p), (a)))
+#define STACK_ALIGN(p, a)   (typeof(p))((typeof(a))(p) & ~((a) - 1))
+
+#define POINTER             void *
+#define UINT32              uint32_t
+
+#define likely(x)           __builtin_expect(!!(x), 1)
+#define unlikely(x)         __builtin_expect(!!(x), 0)
+#define __maybe_unused      __attribute__((unused))
+
+#define assert_static(e) \
+   do { \
+      enum { assert_static__ = 1/(e) }; \
+   } while (0)
+
+/**
+ * Critical region protection: this should disable interrupts
+ * to protect OS data structures during modification. It must
+ * allow nested calls, which means that interrupts should only
+ * be re-enabled when the outer CRITICAL_END() is reached.
+ */
+#define CRITICAL_STORE      bool __irq_flags
+#define CRITICAL_START()    __irq_flags = cm_mask_interrupts(true)
+#define CRITICAL_END()      (void) cm_mask_interrupts(__irq_flags)
+
+/**
+ * When using newlib, define port private field in atom_tcb to be a
+ * struct _reent.
+ */
+#if defined(__NEWLIB__)
+struct cortex_port_priv {
+    struct _reent reent;
+};
+
+#define THREAD_PORT_PRIV    struct cortex_port_priv port_priv
+#endif
+
+/* Uncomment to enable stack-checking */
+/* #define ATOM_STACK_CHECKING */
+
+#endif /* __ATOM_PORT_H */

ports/cortex-m/boards/ek-lm4f120xl/Makefile.include

@@ -0,0 +1,17 @@
+TARGET          ?= lm4f120xl
+
+LIBNAME         ?= opencm3_lm4f
+DEFS            ?= -DLM4F
+DEFS            += -DSTD_CON=UART0
+DEFS            += -DMST_SIZE=0x400
+
+FP_FLAGS        ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
+ARCH_FLAGS      ?= -mthumb -mcpu=cortex-m4 $(FP_FLAGS)
+
+OOCD            ?= openocd
+OOCD_INTERFACE	?= ti-icdi
+OOCD_BOARD	    ?= ek-lm4f120xl
+
+objs            += board_setup.o
+objs            += stubs.o lm4f_con.o
+# aobjs           += helloworld.o

ports/cortex-m/boards/ek-lm4f120xl/board_setup.c

@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdbool.h>
+
+#include <libopencm3/lm4f/rcc.h>
+#include <libopencm3/lm4f/gpio.h>
+#include <libopencm3/lm4f/uart.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/cm3/nvic.h>
+
+#include "atomport.h"
+
+static void uart_setup(uint32_t baud)
+{
+    periph_clock_enable(RCC_GPIOA);
+    gpio_set_af(GPIOA, 1, GPIO0 | GPIO1);
+
+    periph_clock_enable(RCC_UART0);
+
+    /* We need a brief delay before we can access UART config registers */
+    __asm__("nop");
+
+    /* Disable the UART while we mess with its setings */
+    uart_disable(UART0);
+
+    /* Configure the UART clock source as precision internal oscillator */
+    uart_clock_from_piosc(UART0);
+
+    /* Set communication parameters */
+    uart_set_baudrate(UART0, baud);
+    uart_set_databits(UART0, 8);
+    uart_set_parity(UART0, UART_PARITY_NONE);
+    uart_set_stopbits(UART0, 1);
+
+    /* Now that we're done messing with the settings, enable the UART */
+    uart_enable(UART0);
+}
+
+/**
+ * initialise and start SysTick counter. This will trigger the
+ * sys_tick_handler() periodically once interrupts have been enabled
+ * by archFirstThreadRestore()
+ */
+static void systick_setup(void)
+{
+    systick_set_frequency(SYSTEM_TICKS_PER_SEC, 80000000);
+
+    systick_interrupt_enable();
+
+    systick_counter_enable();
+}
+
+/**
+ * Set up the core clock to something other than the internal 16MHz PIOSC.
+ * Make sure that you use the same clock frequency in  systick_setup().
+ */
+static void clock_setup(void)
+{
+    /**
+     * set up 400MHz PLL from 16MHz crystal and divide by 5 to get 80MHz
+     * system clock
+     */
+    rcc_sysclk_config(OSCSRC_MOSC, XTAL_16M, 5);
+}
+
+/**
+ * Set up user LED and provide function for toggling it. This is for
+ * use by the test suite programs
+ */
+static void test_led_setup(void)
+{
+    /* LED is connected to GPIO1 on port F */
+    periph_clock_enable(RCC_GPIOF);
+    gpio_mode_setup(GPIOF, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO1);
+    gpio_set_output_config(GPIOF, GPIO_OTYPE_PP, GPIO_DRIVE_2MA, GPIO1);
+
+    gpio_set(GPIOF, GPIO1);
+}
+
+void test_led_toggle(void)
+{
+    gpio_toggle(GPIOF, GPIO1);
+}
+
+/**
+ * Callback from your main program to set up the board's hardware before
+ * the kernel is started.
+ */
+int board_setup(void)
+{
+    /* Disable interrupts. This makes sure that the sys_tick_handler will
+     * not be called before the first thread has been started.
+     * Interrupts will be enabled by archFirstThreadRestore().
+     */
+    cm_mask_interrupts(true);
+
+    /* configure system clock, user LED and UART */
+    gpio_enable_ahb_aperture();
+    clock_setup();
+    test_led_setup();
+    uart_setup(115200);
+
+    /* Initialise SysTick counter */
+    systick_setup();
+
+    /* Set exception priority levels. Make PendSv the lowest priority and
+     * SysTick the second to lowest
+     */
+    nvic_set_priority(NVIC_PENDSV_IRQ, 0xFF);
+    nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFE);
+
+    return 0;
+}

ports/cortex-m/boards/nucleo-f072rb/Makefile.include

@@ -0,0 +1,17 @@
+TARGET          ?= stm32f072rb
+
+LIBNAME         ?= opencm3_stm32f0
+DEFS            ?= -DSTM32F0
+DEFS            += -DSTD_CON=USART2
+DEFS            += -DMST_SIZE=0x400
+
+FP_FLAGS        ?= -msoft-float
+ARCH_FLAGS      ?= -mthumb -mcpu=cortex-m0
+
+OOCD            ?= openocd
+OOCD_INTERFACE  ?= stlink-v2-1
+OOCD_BOARD      ?= st_nucleo_f0
+
+objs            += board_setup.o
+objs            += stubs.o stm32_con.o
+# aobjs           += helloworld.o

ports/cortex-m/boards/nucleo-f072rb/board_setup.c

@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdbool.h>
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/usart.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/cm3/nvic.h>
+
+#include "atomport.h"
+
+/**
+ * Set up USART2.
+ * This one is connected via the virtual serial port on the Nucleo Board
+ */
+static void usart_setup(uint32_t baud)
+{
+    rcc_periph_clock_enable(RCC_GPIOA);
+    rcc_periph_clock_enable(RCC_USART2);
+
+    usart_disable(USART2);
+    gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2 | GPIO3);
+    gpio_set_af(GPIOA, GPIO_AF1, GPIO2 | GPIO3);
+
+    usart_set_baudrate(USART2, baud);
+    usart_set_databits(USART2, 8);
+    usart_set_parity(USART2, USART_PARITY_NONE);
+    usart_set_stopbits(USART2, USART_CR2_STOP_1_0BIT);
+    usart_set_mode(USART2, USART_MODE_TX_RX);
+    usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
+
+    usart_enable(USART2);
+}
+
+/**
+ * initialise and start SysTick counter. This will trigger the
+ * sys_tick_handler() periodically once interrupts have been enabled
+ * by archFirstThreadRestore()
+ */
+static void systick_setup(void)
+{
+    systick_set_frequency(SYSTEM_TICKS_PER_SEC, 48000000);
+
+    systick_interrupt_enable();
+
+    systick_counter_enable();
+}
+
+/**
+ * Set up the core clock to something other than the internal 16MHz PIOSC.
+ * Make sure that you use the same clock frequency in  systick_setup().
+ */
+static void clock_setup(void)
+{
+    /* set core clock to 48MHz, generated from PIOSC */
+    rcc_clock_setup_in_hsi_out_48mhz();
+}
+
+/**
+ * Set up user LED and provide function for toggling it. This is for
+ * use by the test suite programs
+ */
+static void test_led_setup(void)
+{
+    /* LED is connected to GPIO5 on port A */
+    rcc_periph_clock_enable(RCC_GPIOA);
+
+    gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO5);
+    gpio_set(GPIOA, GPIO5);
+}
+
+void test_led_toggle(void)
+{
+    gpio_toggle(GPIOA, GPIO5);
+}
+
+/**
+ * Callback from your main program to set up the board's hardware before
+ * the kernel is started.
+ */
+int board_setup(void)
+{
+    /* Disable interrupts. This makes sure that the sys_tick_handler will
+     * not be called before the first thread has been started.
+     * Interrupts will be enabled by archFirstThreadRestore().
+     */
+    cm_mask_interrupts(true);
+
+    /* configure system clock, user LED and UART */
+    clock_setup();
+    test_led_setup();
+    usart_setup(115200);
+
+    /* initialise SysTick counter */
+    systick_setup();
+
+    /* Set exception priority levels. Make PendSv the lowest priority and
+     * SysTick the second to lowest
+     */
+    nvic_set_priority(NVIC_PENDSV_IRQ, 0xFF);
+    nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFE);
+
+    return 0;
+}
+

ports/cortex-m/boards/nucleo-f103rb/Makefile.include

@@ -0,0 +1,17 @@
+TARGET          ?= stm32f103rb
+
+LIBNAME         ?= opencm3_stm32f1
+DEFS            ?= -DSTM32F1
+DEFS            += -DSTD_CON=USART2
+DEFS            += -DMST_SIZE=0x400
+
+FP_FLAGS        ?= -msoft-float
+ARCH_FLAGS      ?= -mthumb -mcpu=cortex-m3 $(FP_FLAGS) -mfix-cortex-m3-ldrd
+
+OOCD            ?= openocd
+OOCD_INTERFACE  ?= stlink-v2-1
+OOCD_BOARD      ?= st_nucleo_f103rb
+
+objs            += board_setup.o
+objs            += stubs.o stm32_con.o
+# aobjs           += helloworld.o

ports/cortex-m/boards/nucleo-f103rb/board_setup.c

@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdbool.h>
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/usart.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/cm3/nvic.h>
+
+#include "atomport.h"
+
+/**
+ * Set up USART2.
+ * This one is connected via the virtual serial port on the Nucleo Board
+ */
+static void usart_setup(uint32_t baud)
+{
+    rcc_periph_clock_enable(RCC_GPIOA);
+    rcc_periph_clock_enable(RCC_AFIO);
+    rcc_periph_clock_enable(RCC_USART2);
+
+    usart_disable(USART2);
+
+    gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
+                  GPIO_USART2_TX | GPIO_USART2_RX);
+
+    usart_set_baudrate(USART2, baud);
+    usart_set_databits(USART2, 8);
+    usart_set_stopbits(USART2, USART_STOPBITS_1);
+    usart_set_parity(USART2, USART_PARITY_NONE);
+    usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
+    usart_set_mode(USART2, USART_MODE_TX_RX);
+
+    usart_enable(USART2);
+}
+
+/**
+ * initialise and start SysTick counter. This will trigger the
+ * sys_tick_handler() periodically once interrupts have been enabled
+ * by archFirstThreadRestore()
+ */
+static void systick_setup(void)
+{
+    systick_set_frequency(SYSTEM_TICKS_PER_SEC, 72000000);
+
+    systick_interrupt_enable();
+
+    systick_counter_enable();
+}
+
+/**
+ * Set up the core clock to something other than the internal 16MHz PIOSC.
+ * Make sure that you use the same clock frequency in  systick_setup().
+ */
+static void clock_setup(void)
+{
+    /* set core clock to 72MHz, generated from external 8MHz crystal */
+    rcc_clock_setup_in_hse_8mhz_out_72mhz();
+}
+
+/**
+ * Set up user LED and provide function for toggling it. This is for
+ * use by the test suite programs
+ */
+static void test_led_setup(void)
+{
+    /* LED is connected to GPIO5 on port A */
+    rcc_periph_clock_enable(RCC_GPIOA);
+
+    gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
+
+    gpio_set(GPIOA, GPIO5);
+}
+
+void test_led_toggle(void)
+{
+    gpio_toggle(GPIOA, GPIO5);
+}
+
+/**
+ * Callback from your main program to set up the board's hardware before
+ * the kernel is started.
+ */
+int board_setup(void)
+{
+    /* Disable interrupts. This makes sure that the sys_tick_handler will
+     * not be called before the first thread has been started.
+     * Interrupts will be enabled by archFirstThreadRestore().
+     */
+    cm_mask_interrupts(true);
+
+    /* configure system clock, user LED and UART */
+    clock_setup();
+    test_led_setup();
+    usart_setup(115200);
+
+    /* initialise SysTick counter */
+    systick_setup();
+
+    /* Set exception priority levels. Make PendSv the lowest priority and
+     * SysTick the second to lowest
+     */
+    nvic_set_priority(NVIC_PENDSV_IRQ, 0xFF);
+    nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFE);
+
+    return 0;
+}
+

ports/cortex-m/boards/nucleo-f411re/Makefile.include

@@ -0,0 +1,17 @@
+TARGET          ?= stm32f411re
+
+LIBNAME         ?= opencm3_stm32f4
+DEFS            ?= -DSTM32F4
+DEFS            += -DSTD_CON=USART2
+DEFS            += -DMST_SIZE=0x400
+
+FP_FLAGS        ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
+ARCH_FLAGS      ?= -mthumb -mcpu=cortex-m4 $(FP_FLAGS) 
+
+OOCD            ?= openocd
+OOCD_INTERFACE  ?= stlink-v2-1
+OOCD_BOARD      ?= st_nucleo_f4
+
+objs            += board_setup.o
+objs            += stubs.o stm32_con.o
+# aobjs           += helloworld.o

ports/cortex-m/boards/nucleo-f411re/board_setup.c

@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdbool.h>
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/usart.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/cm3/nvic.h>
+
+#include "atomport.h"
+
+/**
+ * Set up USART2.
+ * This one is connected via the virtual serial port on the Nucleo Board
+ */
+static void usart_setup(uint32_t baud)
+{
+    rcc_periph_clock_enable(RCC_GPIOA);
+    rcc_periph_clock_enable(RCC_USART2);
+
+    usart_disable(USART2);
+
+    gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2 | GPIO3);
+    gpio_set_af(GPIOA, GPIO_AF7, GPIO2);
+
+    usart_set_baudrate(USART2, baud);
+    usart_set_databits(USART2, 8);
+    usart_set_stopbits(USART2, USART_STOPBITS_1);
+    usart_set_parity(USART2, USART_PARITY_NONE);
+    usart_set_mode(USART2, USART_MODE_TX_RX);
+    usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
+
+    usart_enable(USART2);
+}
+
+/**
+ * initialise and start SysTick counter. This will trigger the
+ * sys_tick_handler() periodically once interrupts have been enabled
+ * by archFirstThreadRestore()
+ */
+static void systick_setup(void)
+{
+    systick_set_frequency(SYSTEM_TICKS_PER_SEC, 16000000);
+
+    systick_interrupt_enable();
+
+    systick_counter_enable();
+}
+
+/**
+ * Set up the core clock to something other than the internal 16MHz PIOSC.
+ * Make sure that you use the same clock frequency in  systick_setup().
+ */
+static void clock_setup(void)
+{
+    /**
+     * Clock setting for stm32f4 is currently broken in libopencm3.
+     * Leave at internal 16MHz
+     */
+    // rcc_clock_setup_hse_3v3(CLOCK_3V3_48MHZ);
+}
+
+/**
+ * Set up user LED and provide function for toggling it. This is for
+ * use by the test suite programs
+ */
+static void test_led_setup(void)
+{
+    /* LED is connected to GPIO5 on port A */
+    rcc_periph_clock_enable(RCC_GPIOA);
+    gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO5);
+    gpio_set(GPIOA, GPIO5);
+}
+
+void test_led_toggle(void)
+{
+    gpio_toggle(GPIOA, GPIO5);
+}
+
+/**
+ * Callback from your main program to set up the board's hardware before
+ * the kernel is started.
+ */
+int board_setup(void)
+{
+    /* Disable interrupts. This makes sure that the sys_tick_handler will
+     * not be called before the first thread has been started.
+     * Interrupts will be enabled by archFirstThreadRestore().
+     */
+    cm_mask_interrupts(true);
+
+    /* configure system clock, user LED and UART */
+    clock_setup();
+    test_led_setup();
+    usart_setup(115200);
+
+    /* initialise SysTick counter */
+    systick_setup();
+
+    /* Set exception priority levels. Make PendSv the lowest priority and
+     * SysTick the second to lowest
+     */
+    nvic_set_priority(NVIC_PENDSV_IRQ, 0xFF);
+    nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFE);
+
+    return 0;
+}

ports/cortex-m/boards/qemu/Makefile.include

@@ -0,0 +1,27 @@
+TARGET          ?= stm32f103rb
+LIBNAME         ?= opencm3_stm32f1
+DEFS            ?= -DSTM32F1
+DEFS            += -DSTD_CON=USART2
+DEFS            += -DMST_SIZE=0x400
+
+FP_FLAGS        ?= -msoft-float
+ARCH_FLAGS      ?= -mthumb -mcpu=cortex-m3 $(FP_FLAGS) -mfix-cortex-m3-ldrd
+
+OOCD            ?= openocd
+OOCD_INTERFACE  ?= stlink-v2-1
+OOCD_BOARD      ?= st_nucleo_f103rb
+
+objs            += board_setup.o
+# aobjs           += helloworld.o
+
+# Special requirements for running automated tests with QEMU
+
+QEMU            ?= qemu-system-gnuarmeclipse
+.DEFAULT_GOAL   := all
+.SECONDEXPANSION:
+
+.PHONY: qemutests
+qemutests: $$(addsuffix .sim, $$(sort $$(build_telfs)))
+
+%.sim: $$(basename $$@)
+	boards/qemu/run_test.exp $(QEMU) $(*)

ports/cortex-m/boards/qemu/README.md

@@ -0,0 +1,31 @@
+This board is a quick n' dirty copy of nucleo-f103rb, stripped down to run
+atomthread's test suite on qemu. Since it must be linked against newlib's 
+librdimon to enable semi-hosting, the stubs provided in the common directory
+can not be used. Do not be surprised if malloc etc. do not work as expected.
+
+The [GNU ARM Eclipse](http://gnuarmeclipse.livius.net/blog/) project maintains
+a fork of qemu that is able to emulate a Nucleo-F103RB board. Check out their
+gnuarmeclipse-dev branch from [here]
+(http://sourceforge.net/p/gnuarmeclipse/qemu/ci/gnuarmeclipse-dev/tree/).
+
+At time of writing (2015-07-13), I had to run configure with 
+`--disable-werror --target-list="gnuarmeclipse-softmmu"` to build
+a usable target.
+
+After installing you can use it to run the test binaries like this:
+
+```
+qemu-system-gnuarmeclipse -nographic -monitor null \
+      -semihosting --machine NUCLEO-F103RB \
+      --verbose --kernel build/kern1.elf
+```
+
+The whole test suite can be run in an automatic way from the build system by
+using the tool `expect`.
+
+```
+make BOARD=qemu QEMU=/path/to/your/qemu/binary qemutests
+```
+
+If your qemu-binary is called `qemu-system-gnuarmeclipse` and is located
+in your search path, you can omit the `QEMU=...` part.

ports/cortex-m/boards/qemu/board_setup.c

@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdbool.h>
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/usart.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/cm3/nvic.h>
+
+#include "atomport.h"
+
+/**
+ * initialise and start SysTick counter. This will trigger the
+ * sys_tick_handler() periodically once interrupts have been enabled
+ * by archFirstThreadRestore(). Since we did not change the clock source,
+ * the MCU is still running from 16MHz PIOSC
+ */
+static void systick_setup(void)
+{
+    systick_set_frequency(SYSTEM_TICKS_PER_SEC, 16000000);
+
+    systick_interrupt_enable();
+
+    systick_counter_enable();
+}
+
+/**
+ * Set up the core clock to something other than the internal 16MHz PIOSC.
+ * Make sure that you use the same clock frequency in  systick_setup().
+ */
+/**
+ * Set up user LED and provide function for toggling it. This is for
+ * use by the test suite programs
+ */
+static void test_led_setup(void)
+{
+    /* LED is connected to GPIO5 on port A */
+    rcc_periph_clock_enable(RCC_GPIOA);
+
+    gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
+
+    gpio_set(GPIOA, GPIO5);
+}
+
+void test_led_toggle(void)
+{
+    static bool on = true;
+
+    /* qemu does not seem to know how to handle gpio_toggle() */
+    if(on){
+        gpio_clear(GPIOA, GPIO5);
+    } else {
+        gpio_set(GPIOA, GPIO5);
+    }
+
+    on = !on;
+}
+
+/**
+ * Callback from your main program to set up the board's hardware before
+ * the kernel is started.
+ */
+extern void  initialise_monitor_handles(void);
+int board_setup(void)
+{
+    /* initialise semi-hosting */
+    initialise_monitor_handles();
+
+    /* Disable interrupts. This makes sure that the sys_tick_handler will
+     * not be called before the first thread has been started.
+     * Interrupts will be enabled by archFirstThreadRestore().
+     */
+    cm_mask_interrupts(true);
+
+    /* configure user LED*/
+    test_led_setup();
+
+    /* initialise SysTick counter */
+    systick_setup();
+
+    /* Set exception priority levels. Make PendSv the lowest priority and
+     * SysTick the second to lowest
+     */
+    nvic_set_priority(NVIC_PENDSV_IRQ, 0xFF);
+    nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFE);
+
+    return 0;
+}
+

ports/cortex-m/boards/qemu/run_test.exp

@@ -0,0 +1,40 @@
+#!/usr/bin/env expect
+
+# Expect script to run an automated test within the simulator (QEMU) and
+# check for successful completion.
+#
+# Arguments: <path_to_qemu> <test_elf_file>
+#
+# Returns 0 on successful test run within QEMU, 1 on failure
+
+
+# Start the test
+spawn [lindex $argv 0] -nographic -monitor null -semihosting \
+    --machine NUCLEO-F103RB --kernel [lindex $argv 1]
+
+# Expect to see the test starting within 10 seconds
+set timeout 10
+
+# Wait for the test to start ("Go")
+expect {
+	"Go" {
+		puts "Test started"
+
+		# The test could take up to 3 minutes to complete once started
+		set timeout 180
+
+		# Now expect to see "Pass" or "Fail" within 3 minutes
+		expect {
+			"Pass" { puts "Test passed"; exit 0 }
+			"Fail" { puts "Test failed"; exit 1 }
+			timeout { puts "Test timed out without completing"; exit 1 }
+		}
+	}
+
+	timeout {
+		# Didn't receive "Go" within 10 seconds
+		puts "Test failed to start ('Go' not seen)"
+		exit 1
+	}
+}
+

ports/cortex-m/common/helloworld.c

@@ -1,57 +1,100 @@
-/*
- * Copyright (c) 2010, Kelvin Lawson. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. No personal names or organizations' names associated with the
- *    Atomthreads project may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef __ATOMPORT_TEST_H__
-#define __ATOMPORT_TEST_H__
-
-/* Include Atomthreads kernel API */
-#include "atom.h"
-
-/* Prerequisite include for ATOMLOG() macro (via printf) */
-#include <stdio.h>
-
-/* Logger macro for viewing test results */
-#define ATOMLOG     printf
-
-/*
- * String location macro: for platforms which need to place strings in
- * alternative locations, e.g. on avr-gcc strings can be placed in
- * program space, saving SRAM. On most platforms this can expand to
- * empty.
- */
-#define _STR(x)     x
-
-/* Default thread stack size (in bytes) */
-#define TEST_THREAD_STACK_SIZE      0x4000
-
-/* Uncomment to enable logging of stack usage to UART */
-/* #define TESTS_LOG_STACK_USAGE */
-
-
-#endif /* __ATOMPORT_TEST_H__ */
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+
+#include <libopencm3/cm3/nvic.h>
+#include "atom.h"
+#include "atomport-private.h"
+#include "atomtimer.h"
+
+#define STACK_SIZE      1024
+#define THREAD_PRIO     42
+
+static ATOM_TCB main_tcb;
+
+static uint8_t thread_stacks[2][STACK_SIZE];
+
+static void main_thread_func(uint32_t data);
+
+/**
+ * Example for a stand-alone board application
+ */
+extern int board_setup(void);
+int main(void)
+{
+    int8_t status;
+    uint32_t loop;
+
+    /**
+     * Brief delay to give the debugger a chance to stop the core before we
+     * muck around with the chip's configuration.
+     */
+    for(loop = 0;loop < 1000000;++loop){
+        __asm__("nop");
+    }
+
+    board_setup();
+
+    /**
+     * Initialise OS and set up idle thread
+     */
+    status = atomOSInit(&thread_stacks[0][0], STACK_SIZE, FALSE);
+
+    if(status == ATOM_OK){
+        /* Set up main thread */
+        status = atomThreadCreate(&main_tcb, THREAD_PRIO, main_thread_func, 0,
+                                  &thread_stacks[1][0], STACK_SIZE, TRUE);
+
+        if(status == ATOM_OK){
+            atomOSStart();
+        }
+    }
+
+    while(1)
+        ;
+
+    /* We will never get here */
+    return 0;
+}
+
+extern void test_led_toggle(void);
+static void main_thread_func(uint32_t data __maybe_unused)
+{
+    /* Print message */
+    printf("Hello, world!\n");
+
+    /* Loop forever and blink the LED */
+    while(1){
+        test_led_toggle();
+
+        atomTimerDelay(SYSTEM_TICKS_PER_SEC);
+    }
+
+}

ports/cortex-m/common/lm4f_con.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -26,63 +26,68 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
-#include <stdio.h>
-#include "modules.h"
-#include "atom.h"
-#include "tests/atomtests.h"
 
-#ifndef ATOMTHREADS_TEST
-#define ATOMTHREADS_TEST                "kern1"
-#endif
-
-#define TEST_STACK_BYTE_SIZE            1024
-#define IDLE_STACK_BYTE_SIZE            512
-
-static unsigned char	test_stack[TEST_STACK_BYTE_SIZE] ;
-static unsigned char	idle_stack[IDLE_STACK_BYTE_SIZE] ;
-ATOM_TCB				test_tcb ;
+#include <errno.h>
 
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/lm4f/uart.h>
 
 /**
- * \b test_thread
- *
- * Function calling the test function of the Atomthreads test suite.
+ * _read and _write for LM4F
  *
+ * _read and _write are used by newlib's I/O routines (think printf, etc.)
+ * If you want to use this code in your binary, you will have to initialise
+ * the UART in your board's setup code and define STD_CON to your UART's
+ * name in your board's Makefile
  */
-void
-test_thread (uint32_t param)
+int _read(int fd, void *buf, size_t count)
 {
-    uint32_t failures ;
-    CRITICAL_STORE ;
+    int rcvd;
+    char *ptr;
 
-    failures = test_start ()  ;
+    if(fd <= 2){
+        ptr = (char *) buf;
+        rcvd = 0;
 
-    atomTimerDelay (10) ;
-    CRITICAL_START() ;
-    printf ("%s %s\r\n", ATOMTHREADS_TEST, failures ? "FAIL" : "PASS") ;
-    exit (failures) ;
-    CRITICAL_END() ;
+        while(count > 0){
+            *ptr = uart_recv_blocking(STD_CON);
+            if(*ptr == '\r'){
+                *ptr = '\n';
+            }
+
+            ++rcvd;
+            --count;
+        }
+    }else{
+        rcvd = -1;
+        errno = EIO;
+    }
+
+    return rcvd;
 }
 
-
-/**
- * \b main
- *
- * Initialize atomthreads and start a test_thread to run the Atomthreads test suite. 
- *
- */
-int
-main (void)
+int _write(int fd, const void *buf, size_t count)
 {
-    int i = 0 ;
+    int sent;
+    char *ptr;
 
-    uint32_t failures ;
-    printf ("Atomthreads starting %s... \r\n", ATOMTHREADS_TEST) ;
+    if(fd <= 2){
+        sent = count;
+        ptr = (char *) buf;
 
-    atomOSInit(&idle_stack[0], IDLE_STACK_BYTE_SIZE, TRUE) ;
-    atomThreadCreate ((ATOM_TCB *)&test_tcb, TEST_THREAD_PRIO, test_thread, 0, &test_stack[0], TEST_STACK_BYTE_SIZE, TRUE);
-    atomOSStart() ;
+        while(count > 0){
+            if(*ptr == '\n'){
+                uart_send_blocking(STD_CON, '\r');
+            }
+            uart_send_blocking(STD_CON, *ptr++);
 
-    return 0 ;
+            ++sent;
+            --count;
+        }
+    }else{
+        errno = EIO;
+        sent = -1;
+    }
+
+    return sent;
 }
-

ports/cortex-m/common/stm32_con.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Natie van Rooyen. All rights reserved.
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -27,55 +27,66 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef __ATOM_PORT_H__
-#define __ATOM_PORT_H__
+#include <errno.h>
 
-#include "types.h"
-
-#define SYSTEM_TICKS_PER_SEC    100
+#include <libopencm3/cm3/cortex.h>
+#include <libopencm3/stm32/usart.h>
 
 /**
- * Definition of NULL.
- * If stddef.h is available on the platform it is simplest to include it
- * from this header, otherwise define below.
- */
-#ifndef NULL
-#define NULL					((void *)(0))
-#endif
-
-/* Size of each stack entry / stack alignment size (e.g. 32 bits) */
-#define STACK_ALIGN_SIZE        sizeof(unsigned int)
-
-/**
- * Architecture-specific types.
- * Most of these are available from types.h on this platform, which is
- * included above.
- */
-
-
-/**
- * Architecture-specific types.
- * Most of these are available from types.h on this platform, which is
- * included above.
- */
-#ifndef POINTER
-#define POINTER                void *
-#endif
-
-/* *
- *
- * Functions defined in atomport_arm.asm
+ * _read and _write for STM32
  *
+ * _read and _write are used by newlib's I/O routines (think printf, etc.)
+ * If you want to use this code in your binary, you will have to initialise
+ * the UART in your board's setup code and define STD_CON to your UART's
+ * name in your board's Makefile
  */
-extern void						contextInit (void) ;
-extern uint32_t					contextEnterCritical (void) ;
-extern void						contextExitCritical (uint32_t posture) ;
+int _read(int fd, void *buf, size_t count)
+{
+    int rcvd;
+    char *ptr;
 
+    if(fd <= 2){
+        ptr = (char *) buf;
+        rcvd = 0;
+        while(count > 0){
+            *ptr = usart_recv_blocking(STD_CON);
+            if(*ptr == '\r'){
+                *ptr = '\n';
+            }
+            ++rcvd;
+            --count;
+        }
+    }else{
+        rcvd = -1;
+        errno = EIO;
+    }
 
-/* Critical region protection */
-#define CRITICAL_STORE          uint32_t __atom_critical
-#define CRITICAL_START()        __atom_critical = contextEnterCritical()
-#define CRITICAL_END()          contextExitCritical(__atom_critical)
+    return rcvd;
+}
 
-#endif /* __ATOM_PORT_H__ */
+int _write(int fd, const void *buf, size_t count)
+{
+    int sent;
+    char *ptr;
+
+    if(fd <= 2){
+        sent = count;
+        ptr = (char *) buf;
+
+        while(count > 0){
+            if(*ptr == '\n'){
+                usart_send_blocking(STD_CON, '\r');
+            }
+            usart_send_blocking(STD_CON, *ptr++);
+            ++sent;
+            --count;
+        }
+
+    }else{
+        errno = EIO;
+        sent = -1;
+    }
+
+    return sent;
+}
 

ports/cortex-m/common/stubs.c

@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2015, Tido Klaassen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/stat.h>
+
+#include <libopencm3/cm3/vector.h>
+
+#include "atomport.h"
+
+/**
+ * _sbrk is needed by newlib for heap management.
+ * The main stack usually starts at the top of RAM and grows downwards,
+ * while the heap starts at the bottom and grows upwards. To prevent
+ * the heap from colliding with the main stack, we reserve a certain amount
+ * of memory and check that growing the heap won't touch that region.
+ * The size of the protected area is set via the define MST_SIZE in the
+ * board Makefile
+ */
+
+#ifndef MST_SIZE
+#error Main stack size not defined. Please define MST_SIZE in board Makefile
+#endif
+
+/**
+ * The vector table is provided by libopencm3/cm3/vector.h and contains
+ * the initial main stack pointer value
+ */
+extern vector_table_t vector_table;
+
+/**
+ * The linker provides the start address of the unused system memory.
+ * It is exported via the symbol 'end' and will be used as the bottom
+ * of the heap
+ */
+extern char end;
+
+static char *heap_end = 0;
+caddr_t _sbrk(int incr)
+{
+    char *prev_end;
+    CRITICAL_STORE;
+
+    prev_end = NULL;
+
+    CRITICAL_START();
+
+    if(unlikely(heap_end == 0)){
+        heap_end = &end;
+    }
+
+    /* make sure new heap size does not collide with main stack area*/
+    if(heap_end + incr + MST_SIZE <= (char *) vector_table.initial_sp_value){
+        prev_end = heap_end;
+        heap_end += incr;
+    }
+
+    CRITICAL_END();
+
+    return (caddr_t) prev_end;
+}
+
+/**
+ * dummy stubs needed by newlib when not linked with libnosys
+ */
+int _close(int file __maybe_unused)
+{
+    return -1;
+}
+
+int _fstat(int file __maybe_unused, struct stat *st)
+{
+    st->st_mode = S_IFCHR;
+
+    return 0;
+}
+
+int _isatty(int file __maybe_unused)
+{
+    return 1;
+}
+
+int _lseek(int file __maybe_unused,
+           int ptr __maybe_unused,
+           int dir __maybe_unused)
+{
+    return 0;
+}
+
+int _open(const char *name __maybe_unused,
+          int flags __maybe_unused,
+          int mode __maybe_unused)
+{
+    return -1;
+}

ports/cortex-m/linker/lm4f120xl.ld

@@ -0,0 +1,10 @@
+/* Memory regions for TI Stellaris EX-LM4F120XL evaluation board. */
+
+MEMORY
+{
+    rom (rx) : ORIGIN = 0x00000000, LENGTH = 256K
+    ram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
+}
+
+/* Include main opencm3 linker script */
+INCLUDE libopencm3_lm4f.ld

ports/cortex-m/linker/stm32f072rb.ld

@@ -0,0 +1,10 @@
+/* Memory regions for STM32F072RB, 128K flash, 16K RAM. */
+
+MEMORY
+{
+    rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+    ram (rwx) : ORIGIN = 0x20000000, LENGTH = 16K
+}
+
+/* Include main opencm3 linker script */
+INCLUDE libopencm3_stm32f0.ld

ports/cortex-m/linker/stm32f103rb.ld

@@ -0,0 +1,10 @@
+/* Memory regions for STM32F103RB, 128K flash, 20K RAM. */
+
+MEMORY
+{
+    rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+    ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+/* Include main opencm3 linker script */
+INCLUDE libopencm3_stm32f1.ld

ports/cortex-m/linker/stm32f411re.ld

@@ -0,0 +1,10 @@
+/* Memory regions for STM32F411RE, 512K flash, 128K RAM. */
+
+MEMORY
+{
+    rom (rx) : ORIGIN = 0x08000000, LENGTH = 512K
+    ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
+}
+
+/* Include main opencm3 linker script */
+INCLUDE libopencm3_stm32f4.ld

ports/cortex-m/tests-main.c

@@ -0,0 +1,283 @@
+/*
+ * Copyright (c) 2010, Kelvin Lawson. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. No personal names or organizations' names associated with the
+ *    Atomthreads project may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+
+#include <libopencm3/cm3/nvic.h>
+#include "atom.h"
+#include "atomport-private.h"
+#include "atomtests.h"
+#include "atomtimer.h"
+
+
+/* Constants */
+
+/*
+ * Idle thread stack size
+ *
+ * This needs to be large enough to handle any interrupt handlers
+ * and callbacks called by interrupt handlers (e.g. user-created
+ * timer callbacks) as well as the saving of all context when
+ * switching away from this thread.
+ *
+ * In this case, the idle stack is allocated on the BSS via the
+ * idle_thread_stack[] byte array.
+ */
+#define IDLE_STACK_SIZE_BYTES       512
+
+
+/*
+ * Main thread stack size
+ *
+ * Note that this is not a required OS kernel thread - you will replace
+ * this with your own application thread.
+ *
+ * In this case the Main thread is responsible for calling out to the
+ * test routines. Once a test routine has finished, the test status is
+ * printed out on the UART and the thread remains running in a loop
+ * flashing a LED.
+ *
+ * The Main thread stack generally needs to be larger than the idle
+ * thread stack, as not only does it need to store interrupt handler
+ * stack saves and context switch saves, but the application main thread
+ * will generally be carrying out more nested function calls and require
+ * stack for application code local variables etc.
+ *
+ * With all OS tests implemented to date on the AVR, the Main thread
+ * stack has not exceeded 201 bytes. To allow all tests to run we set
+ * a minimum main thread stack size of 204 bytes. This may increase in
+ * future as the codebase changes but for the time being is enough to
+ * cope with all of the automated tests.
+ */
+#define MAIN_STACK_SIZE_BYTES       1024
+
+
+/*
+ * Startup code stack
+ *
+ * Some stack space is required at initial startup for running the main()
+ * routine. This stack space is only temporarily required at first bootup
+ * and is no longer required as soon as the OS is started. By default
+ * GCC sets this to the top of RAM (RAMEND) and it grows down from there.
+ * Because we only need this temporarily, though, it would be wasteful to
+ * set aside a region at the top of RAM which is not used during runtime.
+ *
+ * What we do here is to reuse part of the idle thread's stack during
+ * initial startup. As soon as we enter the main() routine we move the
+ * stack pointer to half-way down the idle thread's stack. This is used
+ * temporarily while calls are made to atomOSInit(), atomThreadCreate()
+ * and atomOSStart(). Once the OS is started this stack area is no
+ * longer required, and can be used for its original purpose (for the
+ * idle thread's stack).
+ *
+ * This does mean, however, that we cannot monitor the stack usage of the
+ * idle thread. Stack usage is monitored by prefilling the stack with a
+ * known value, and we are obliterating some of that prefilled area by
+ * using it as our startup stack, so we cannot use the stack-checking API
+ * to get a true picture of idle thread stack usage. If you wish to 
+ * monitor idle thread stack usage for your applications then you are
+ * free to use a different region for the startup stack (e.g. set aside
+ * an area permanently, or place it somewhere you know you can reuse
+ * later in the application). For the time being, this method gives us a
+ * simple way of reducing the memory consumption without having to add
+ * any special AVR-specific considerations to the automated test
+ * applications.
+ *
+ * This optimisation was required to allow some of the larger automated
+ * test modules to run on devices with 1KB of RAM. You should avoid doing
+ * this if you can afford to set aside 64 bytes or so, or if you are
+ * writing your own applications in which you have further control over
+ * where data is located.
+ */
+
+
+/* Local data */
+
+/* Application threads' TCBs */
+static ATOM_TCB main_tcb;
+
+/* Main thread's stack area */
+static uint8_t main_thread_stack[MAIN_STACK_SIZE_BYTES];
+
+/* Idle thread's stack area */
+static uint8_t idle_thread_stack[IDLE_STACK_SIZE_BYTES];
+
+/* Forward declarations */
+static void main_thread_func (uint32_t data);
+
+
+/**
+ * \b main
+ *
+ * Program entry point.
+ *
+ * Sets up the AVR hardware resources (system tick timer interrupt) necessary
+ * for the OS to be started. Creates an application thread and starts the OS.
+ */
+extern int board_setup(void);
+int main ( void )
+{
+    int8_t status;
+    uint32_t loop;
+
+    /**
+     * Brief delay to give the debugger a chance to stop the core before we
+     * muck around with the chip's configuration.
+     */
+    for(loop = 0; loop < 1000000; ++loop){
+        __asm__("nop");
+    }
+
+    /**
+     * Note: to protect OS structures and data during initialisation,
+     * interrupts must remain disabled until the first thread
+     * has been restored. They are reenabled at the very end of
+     * the first thread restore, at which point it is safe for a
+     * reschedule to take place.
+     */
+    board_setup();
+
+    /**
+     * Initialise the OS before creating our threads.
+     *
+     * Note that we cannot enable stack-checking on the idle thread on
+     * this platform because we are already using part of the idle
+     * thread's stack now as our startup stack. Prefilling for stack
+     * checking would overwrite our current stack.
+     *
+     * If you are not reusing the idle thread's stack during startup then
+     * you are free to enable stack-checking here.
+     */
+    status = atomOSInit(&idle_thread_stack[0], IDLE_STACK_SIZE_BYTES, FALSE);
+    if (status == ATOM_OK)
+    {
+
+        /* Create an application thread */
+        status = atomThreadCreate(&main_tcb,
+                     TEST_THREAD_PRIO, main_thread_func, 0,
+                     &main_thread_stack[0],
+                     MAIN_STACK_SIZE_BYTES,
+                     TRUE);
+        if (status == ATOM_OK)
+        {
+            /**
+             * First application thread successfully created. It is
+             * now possible to start the OS. Execution will not return
+             * from atomOSStart(), which will restore the context of
+             * our application thread and start executing it.
+             *
+             * Note that interrupts are still disabled at this point.
+             * They will be enabled as we restore and execute our first
+             * thread in archFirstThreadRestore().
+             */
+            atomOSStart();
+        }
+    }
+
+    while (1)
+        ;
+
+    /* There was an error starting the OS if we reach here */
+    return (0);
+}
+
+
+/**
+ * \b main_thread_func
+ *
+ * Entry point for main application thread.
+ *
+ * This is the first thread that will be executed when the OS is started.
+ *
+ * @param[in] data Unused (optional thread entry parameter)
+ *
+ * @return None
+ */
+extern void test_led_toggle(void);
+static void main_thread_func (uint32_t data __maybe_unused)
+{
+    uint32_t test_status;
+    int sleep_ticks;
+
+
+    /* Put a message out on the UART */
+    printf("Go\n");
+
+    /* Start test. All tests use the same start API. */
+    test_status = test_start();
+
+    /* Check main thread stack usage (if enabled) */
+#ifdef ATOM_STACK_CHECKING
+    if (test_status == 0)
+    {
+        uint32_t used_bytes, free_bytes;
+
+        /* Check idle thread stack usage */
+        if (atomThreadStackCheck (&main_tcb, &used_bytes, &free_bytes) == ATOM_OK)
+        {
+            /* Check the thread did not use up to the end of stack */
+            if (free_bytes == 0)
+            {
+                printf("Main stack overflow\n");
+                test_status++;
+            }
+
+            /* Log the stack usage */
+#ifdef TESTS_LOG_STACK_USAGE
+            printf("MainUse: %lu\n", used_bytes);
+#endif
+        }
+
+    }
+#endif
+
+    /* Log final status */
+    if (test_status == 0)
+    {
+        printf("Pass\n");
+    }
+    else
+    {
+        printf("Fail(%lu)\n", test_status);
+    }
+
+    /* Flash LED once per second if passed, very quickly if failed */
+    sleep_ticks = (test_status == 0) ? SYSTEM_TICKS_PER_SEC : (SYSTEM_TICKS_PER_SEC/8);
+
+    /* Test finished, flash slowly for pass, fast for fail */
+    while (1)
+    {
+        /* Toggle a LED (STK500-specific) */
+        test_led_toggle();
+
+        /* Sleep then toggle LED again */
+        atomTimerDelay (sleep_ticks);
+    }
+
+}

ports/cortex_m/Makefile

@@ -1,19 +0,0 @@
-ATOMTHREADS_PORT = $(ATOMTHREADS)/ports/cortex_m
-ATOMTHREADS_KERNEL = $(ATOMTHREADS)/kernel
-
-INCLUDES := $(INCLUDES) \
-			-I$(ATOMTHREADS_KERNEL) \
-			-I$(ATOMTHREADS_PORT)
-			
-SRCS := $(SRCS) \
-		$(ATOMTHREADS_KERNEL)/atomkernel.c \
-		$(ATOMTHREADS_KERNEL)/atommutex.c \
-		$(ATOMTHREADS_KERNEL)/atomqueue.c \
-		$(ATOMTHREADS_KERNEL)/atomsem.c \
-		$(ATOMTHREADS_KERNEL)/atomtimer.c \
-		$(ATOMTHREADS_PORT)/atomport.c
-
-ASMS := $(ASMS) \
-		$(ATOMTHREADS_PORT)/atomport_s.S
-
-