Files
mm/include/libc/stdarg.h
T
Anghelo Carvajal 4fa13e4132 Move libultra function declarations to libultra headers (#1196)
* Delete unused headers

* Move PR and io to ultra64

* move headers to ultra64

* more cleanups

* more reorganizing

* i think that should be all

* format

* ifdef guards cleanup

* Add IO_READ and IO_WRITE macros for future use

* warnings

* review

Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>

* warnings again

* warn

* ifdef guards

* fix merge

* fix merge

* fix merge

* bss

* padutils.h

* bss

* bss

* bss

* fix merge

* bss

* bss

* bss

* fix merge

* fixes

* fixes

* bss

* bss

* fix merge

* fix

* fix

* fix includepaths

* fix paths

* bss

* fix

* ultra64/ -> PR/

* header guards

* fix ehader guards

* fix

* fix++

* format

* bss is borken

* prevent 2

* :despair:

* bss

* rename assert to dbg_hungup

* fix

* a

* fix

* bss

* fix

* bss

* bss

---------

Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>
2023-09-02 15:34:29 -04:00

45 lines
1.9 KiB
C

#ifndef LIBC_STDARG_H
#define LIBC_STDARG_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 */