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Diffstat (limited to 'kernel/include/kernel.h')
| -rw-r--r-- | kernel/include/kernel.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/kernel/include/kernel.h b/kernel/include/kernel.h new file mode 100644 index 0000000..c3f7827 --- /dev/null +++ b/kernel/include/kernel.h @@ -0,0 +1,79 @@ +#pragma once + +#include "types.h" + +/* The linker script will initialize these symbols. Note + * that the linker does not actually allocate any space + * for these variables (thus the void type) it only sets + * the address that the symbol points to. So for example + * the address where the kernel ends is &kernel_end, + * NOT kernel_end. + */ +extern void *setup_end; +extern void *kernel_start; +extern void *kernel_start_text; +extern void *kernel_start_data; +extern void *kernel_start_bss; +extern void *kernel_end; +extern void *kernel_end_text; +extern void *kernel_end_data; +extern void *kernel_end_bss; +extern void *kernel_start_init; +extern void *kernel_end_init; + +extern void *kernel_phys_base; +extern void *kernel_phys_end; + +#define inline __attribute__((always_inline, used)) +#define noreturn __attribute__((noreturn)) + +#define offsetof(type, member) \ + ((uintptr_t)((char *)&((type *)(0))->member - (char *)0)) + +#define NOT_YET_IMPLEMENTED(f) \ + dbg(DBG_PRINT, "Not yet implemented: %s, file %s, line %d\n", f, __FILE__, \ + __LINE__) + +#ifndef MIN +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#endif +#ifndef MAX +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#endif + +#define CONTAINER_OF(obj, type, member) \ + ((type *)((char *)(obj)-offsetof(type, member))) + +/* This truly atrocious macro hack taken from the wikipedia article on the C + * preprocessor, use to "quote" the value (or name) of another macro: + * QUOTE_BY_NAME(NTERMS) -> "NTERMS" + * QUOTE(NTERMS) -> "3" + * + * These macros even made more atrocious by searching for "stringizing operator + * comma". The variable length macros account for comma separated symbols. + */ +#define QUOTE_BY_NAME(...) #__VA_ARGS__ +#define QUOTE_BY_VALUE(x) QUOTE_BY_NAME(x) +/* By default, we quote by value */ +#define QUOTE(...) QUOTE_BY_NAME(__VA_ARGS__) + +#if 0 +#ifndef __DRIVERS__ +#define __DRIVERS__ +#endif +#ifndef __VFS__ +#define __VFS__ +#endif +#ifndef __S5FS__ +#define __S5FS__ +#endif +#ifndef __VM__ +#define __VM__ +#endif +#ifndef __NTERMS__ +#define __NTERMS__ 3 +#endif +#ifndef __NDISKS__ +#define __NDISKS__ 1 +#endif +#endif
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