diff options
| author | Prakxo <87568477+Prakxo@users.noreply.github.com> | 2023-08-15 18:21:42 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-08-15 10:21:42 -0700 |
| commit | a2deca64d24427d6856dc5e7fc43bde4b1641a43 (patch) | |
| tree | b6566ff3648a5fdab02c57c21b1bb9fab1294ccd /include/libc | |
| parent | f19df74c6ee597f01c3d7def1fdef105d9bdef92 (diff) | |
aprintf OK (#51)
* m_pause OK
* yeah now it's OK lol
* refactor
* refactor 2
* m_controller OK
* format
* fix size comment in game
* refactor 3
* refactor 4
* refactor 5
* add unused macro
* aprintf OK
Diffstat (limited to 'include/libc')
| -rw-r--r-- | include/libc/stdarg.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/libc/stdarg.h b/include/libc/stdarg.h new file mode 100644 index 0000000..77b8b88 --- /dev/null +++ b/include/libc/stdarg.h @@ -0,0 +1,46 @@ +#ifndef STDARG_H +#define STDARG_H + +#include "ultra64.h" + +// When building with GCC, use the official vaarg macros to avoid warnings +// and possibly bad codegen. +#ifdef __GNUC__ +#define va_list __builtin_va_list +#define va_start __builtin_va_start +#define va_arg __builtin_va_arg +#define va_end __builtin_va_end +#else + +typedef char *va_list; +#define _FP 1 +#define _INT 0 +#define _STRUCT 2 + +#define _VA_FP_SAVE_AREA 0x10 +#define _VA_ALIGN(p, a) (((unsigned int)(((char *)p) + ((a) > 4 ? (a) : 4) - 1)) & -((a) > 4 ? (a) : 4)) +#define va_start(vp, parmN) (vp = ((va_list)&parmN + sizeof(parmN))) + +#define __va_stack_arg(list, mode) \ + ( \ + ((list) = (char *)_VA_ALIGN(list, __builtin_alignof(mode)) + \ + _VA_ALIGN(sizeof(mode), 4)), \ + (((char *)list) - (_VA_ALIGN(sizeof(mode), 4) - sizeof(mode)))) + +#define __va_double_arg(list, mode) \ + ( \ + (((long)list & 0x1) /* 1 byte aligned? */ \ + ? (list = (char *)((long)list + 7), (char *)((long)list - 6 - _VA_FP_SAVE_AREA)) \ + : (((long)list & 0x2) /* 2 byte aligned? */ \ + ? (list = (char *)((long)list + 10), (char *)((long)list - 24 - _VA_FP_SAVE_AREA)) \ + : __va_stack_arg(list, mode)))) + +#define va_arg(list, mode) ((mode *)(((__builtin_classof(mode) == _FP && \ + __builtin_alignof(mode) == sizeof(double)) \ + ? __va_double_arg(list, mode) \ + : __va_stack_arg(list, mode))))[-1] +#define va_end(__list) + +#endif /* __GNUC__ */ + +#endif /* STDARG_H */ |