mirror of
https://github.com/drasko/codezero.git
synced 2026-01-12 10:53:16 +01:00
35d2d275b6
- fixed is_err(x), was evaluating x twice, resulting in calling a function x twice. - Divided task initialisation into multiple parts. - MM0 now creates a tcb for itself and maintains memory regions of its own. - MM0's tcb is used for mmapping other tasks' regions. MM0 mmaps and prefaults those regions, instead of the typical mmap() and fault approach used by non-pager tasks. For example there's an internal shmget_shmat() path to map in other tasks' shm utcbs. Those mappings are then prefaulted into mm0's address space using the default fault handling path. - FS0 now reads task data into its utcb from mm0 via a syscall. FS0 shmat()s to utcbs of other tasks, e.g. mm0 and test0. FS0 then crashes, that is to be fixed and where this commit is left last.
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
#ifndef __MACROS_H__
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#define __MACROS_H__
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#include "config.h"
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/*
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* This file is automatically included before the first line of any
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* source file, using gcc's -imacro command line option. Only macro
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* definitions will be extracted.
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*/
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#define INC_ARCH(x) <l4/arch/__ARCH__/x>
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#define INC_SUBARCH(x) <l4/arch/__ARCH__/__SUBARCH__/x>
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#define INC_CPU(x) <l4/arch/__ARCH__/__SUBARCH__/__CPU__/x>
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#define INC_PLAT(x) <l4/platform/__PLATFORM__/x>
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#define INC_API(x) <l4/api/x>
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#define INC_GLUE(x) <l4/glue/__ARCH__/x>
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/* use this to place code/data in a certain section */
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#define SECTION(x) __attribute__((section(x)))
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/* Functions for critical path optimizations */
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#if (__GNUC__ >= 3)
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#define unlikely(x) __builtin_expect((x), false)
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#define likely(x) __builtin_expect((x), true)
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#define likelyval(x,val) __builtin_expect((x), (val))
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#else /* __GNUC__ < 3 */
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#define likely(x) (x)
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#define unlikely(x) (x)
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#define likelyval(x,val) (x)
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#endif /* __GNUC__ < 3 */
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/* This guard is needed because tests use host C library and NULL is defined */
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#ifndef NULL
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#define NULL 0
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#endif
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/* Convenience functions for memory sizes. */
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#define SZ_1K 1024
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#define SZ_4K 0x1000
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#define SZ_16K 0x4000
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#define SZ_64K 0x10000
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#define SZ_1MB 0x100000
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#define SZ_8MB (8*SZ_1MB)
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#define SZ_16MB (16*SZ_1MB)
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#define SZ_1K_BITS 10
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#define SZ_4K_BITS 12
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#define SZ_16K_BITS 14
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#define SZ_1MB_BITS 20
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#ifndef __ASSEMBLY__
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#include <stddef.h> /* offsetof macro, defined in the `standard' way. */
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#endif
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/* Offset of struct fields. */
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//#if (__GNUC__ >= 4)
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//#define offsetof(type, field) __builtin_offsetof(type, field)
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//#else
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//#define offsetof(type, field) (u32)(&((type *)0)->field)
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//#endif
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/* LICENSE: Taken off Linux */
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/**
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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/* Prefetching is noop for now */
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#define prefetch(x) x
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#if !defined(__KERNEL__)
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#define printk printf
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#endif
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/* Functions who may either return a pointer or an error code can use these: */
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#define PTR_ERR(x) ((void *)(x))
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/* checks up to -1000, the rest might be valid pointers!!! E.g. 0xE0000000 */
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// #define IS_ERR(x) ((((int)(x)) < 0) && (((int)(x) > -1000)))
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#if !defined(__ASSEMBLY__)
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#define IS_ERR(x) is_err((int)(x))
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static inline int is_err(int x)
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{
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return x < 0 && x > -0x1000;
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}
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#endif
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/* TEST: Is this type of printk well tested? */
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#define BUG() {do { \
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printk("BUG in file: %s function: %s line: %d\n", \
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__FILE__, __FUNCTION__, __LINE__); \
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} while(0); \
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while(1);}
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#define BUG_ON(x) {if (x) BUG();}
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#define BUG_ON_MSG(msg, x) do { \
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printk(msg); \
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BUG_ON(x) \
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} while(0)
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#define BUG_MSG(msg...) do { \
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printk(msg); \
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BUG(); \
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} while(0)
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#endif /* __MACROS_H__ */
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