82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
#ifndef _STDARG_H
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#define _STDARG_H
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#ifdef __x86_64__
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#ifndef _WIN64
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// This should be in sync with the declaration on our lib/libtcc1.c
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/* GCC compatible definition of va_list. */
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typedef struct {
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unsigned int gp_offset;
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unsigned int fp_offset;
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union {
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unsigned int overflow_offset;
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char* overflow_arg_area;
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};
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char* reg_save_area;
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} __va_list_struct;
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typedef __va_list_struct va_list[1];
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void __va_start(__va_list_struct* ap, void* fp);
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void* __va_arg(__va_list_struct* ap, int arg_type, int size, int align);
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#define va_start(ap, last) __va_start(ap, __builtin_frame_address(0))
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#define va_arg(ap, type) (*(type*)(__va_arg(ap, __builtin_va_arg_types(type), sizeof(type), __alignof__(type))))
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#define va_copy(dest, src) (*(dest) = *(src))
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#define va_end(ap)
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/* avoid conflicting definition for va_list on Macs. */
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#define _VA_LIST_T
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#else /* _WIN64 */
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typedef char* va_list;
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#define va_start(ap, last) __builtin_va_start(ap, last)
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#define va_arg(ap, t) ((sizeof(t) > 8 || (sizeof(t) & (sizeof(t) - 1))) ? **(t**)((ap += 8) - 8) : *(t*)((ap += 8) - 8))
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#define va_copy(dest, src) ((dest) = (src))
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#define va_end(ap)
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#endif
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#elif __arm__
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typedef char* va_list;
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#define _tcc_alignof(type) \
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((int)&((struct { \
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char c; \
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type x; \
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}*)0) \
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->x)
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#define _tcc_align(addr, type) (((unsigned)addr + _tcc_alignof(type) - 1) & ~(_tcc_alignof(type) - 1))
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#define va_start(ap, last) ap = ((char*)&(last)) + ((sizeof(last) + 3) & ~3)
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#define va_arg(ap, type) \
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(ap = (void*)((_tcc_align(ap, type) + sizeof(type) + 3) & ~3), *(type*)(ap - ((sizeof(type) + 3) & ~3)))
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#define va_copy(dest, src) (dest) = (src)
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#define va_end(ap)
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#elif defined(__aarch64__)
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typedef struct {
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void* __stack;
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void* __gr_top;
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void* __vr_top;
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int __gr_offs;
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int __vr_offs;
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} va_list;
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#define va_start(ap, last) __va_start(ap, last)
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#define va_arg(ap, type) __va_arg(ap, type)
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#define va_end(ap)
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#define va_copy(dest, src) ((dest) = (src))
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#else /* __i386__ */
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typedef char* va_list;
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/* only correct for i386 */
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#define va_start(ap, last) ap = ((char*)&(last)) + ((sizeof(last) + 3) & ~3)
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#define va_arg(ap, type) (ap += (sizeof(type) + 3) & ~3, *(type*)(ap - ((sizeof(type) + 3) & ~3)))
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#define va_copy(dest, src) (dest) = (src)
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#define va_end(ap)
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#endif
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/* fix a buggy dependency on GCC in libio.h */
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typedef va_list __gnuc_va_list;
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#define _VA_LIST_DEFINED
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#endif /* _STDARG_H */
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