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102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
/*
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* Copyright (c) 2010, Kelvin Lawson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. No personal names or organizations' names associated with the
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* Atomthreads project may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __ATOM_PORT_H
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#define __ATOM_PORT_H
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#include "stm8s_type.h"
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#if defined(__IAR_SYSTEMS_ICC__)
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#include "intrinsics.h"
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#elif defined (__RCSTM8__)
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#include <intrins.h>
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#endif
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/* Definition of NULL is available from stddef.h on this platform */
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#include <stddef.h>
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/* Required number of system ticks per second (normally 100 for 10ms tick) */
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#define SYSTEM_TICKS_PER_SEC 100
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/* Size of each stack entry / stack alignment size (8 bits on STM8) */
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#define STACK_ALIGN_SIZE sizeof(u8)
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/**
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* Architecture-specific types.
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*/
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#define int8_t s8
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#define int16_t s16
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#define int32_t s32
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#define uint8_t u8
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#define uint16_t u16
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#define uint32_t u32
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#define POINTER void *
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/**
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* Critical region protection: this should disable interrupts
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* to protect OS data structures during modification. It must
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* allow nested calls, which means that interrupts should only
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* be re-enabled when the outer CRITICAL_END() is reached.
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*/
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/* COSMIC: Use inline assembler */
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#if defined(__CSMC__)
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#define CRITICAL_STORE uint8_t ccr
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#define CRITICAL_START() _asm ("push CC\npop a\nld (X),A\nsim", &ccr)
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#define CRITICAL_END() _asm ("ld A,(X)\npush A\npop CC", &ccr)
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/* IAR: Use intrinsics */
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#elif defined(__IAR_SYSTEMS_ICC__)
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#define CRITICAL_STORE __istate_t _istate
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#define CRITICAL_START() _istate = __get_interrupt_state(); __disable_interrupt()
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#define CRITICAL_END() __set_interrupt_state(_istate)
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/* Raisonance: Use intrinsics */
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#elif defined(__RCSTM8__)
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#define CRITICAL_STORE unsigned char ccr
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#define CRITICAL_START() ccr = _getCC_(); _sim_()
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#define CRITICAL_END() _setCC_(ccr)
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/* SDCC: Use custom function */
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#elif defined(__SDCC_stm8)
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uint8_t get_cc(void);
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void set_cc(uint8_t);
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#define CRITICAL_STORE uint8_t ccr
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#define CRITICAL_START() ccr = get_cc(); __asm__("sim")
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#define CRITICAL_END() set_cc(ccr)
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#endif
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/* Uncomment to enable stack-checking */
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/* #define ATOM_STACK_CHECKING */
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#endif /* __ATOM_PORT_H */
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