mirror of
https://github.com/drasko/codezero.git
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137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
#ifndef __MACROS_H__
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#define __MACROS_H__
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#include "config.h"
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#define __KERNELNAME__ "code0"
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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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#define __initdata SECTION(".init.data")
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/*
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* FIXME: Remove __CPP__
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* This is defined in kernel linker.lds.in,
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* find some better way.
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*/
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#if !defined(__CPP__)
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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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#define ALIGN(x) __attribute__((aligned (x)))
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#endif
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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_2K 2048
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#define SZ_4K 0x1000
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#define SZ_8K 0x2000
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#define SZ_16K 0x4000
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#define SZ_32K 0x8000
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#define SZ_64K 0x10000
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#define SZ_1MB 0x100000
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#define SZ_2MB 0x200000
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#define SZ_4MB (4*SZ_1MB)
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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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/* Per-cpu variables */
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#if defined CONFIG_SMP_
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#define DECLARE_PERCPU(type, name) \
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type name[CONFIG_NCPU]
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#define per_cpu(val) (val)[smp_get_cpuid()]
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#define per_cpu_byid(val, cpu) (val)[(cpu)]
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#else /* Not CONFIG_SMP_ */
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#define DECLARE_PERCPU(type, name) \
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type name
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#define per_cpu(val) (val)
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#define per_cpu_byid(val, cpu) val
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#endif /* End of Not CONFIG_SMP_ */
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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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#define container_of(ptr, struct_type, field) \
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({ \
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const typeof(((struct_type *)0)->field) *field_ptr = (ptr); \
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(struct_type *)((char *)field_ptr - offsetof(struct_type, field)); \
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})
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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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/* Converts an int-sized field offset in a struct into a bit offset in a word */
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#define FIELD_TO_BIT(type, field) (1 << (offsetof(type, field) >> 2))
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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 WARN_ON(x) {if (x) printk("%s, %s, %s: Warning something is off here.\n", __FILE__, __FUNCTION__, __LINE__); }
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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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