mirror of
https://github.com/frida/tinycc
synced 2024-11-28 18:43:07 +03:00
3900b235e0
The ABI requires that va_list is passed as a pointer although its contents is a kept in a structure. Therefore make it a single element array.
63 lines
2.0 KiB
C
63 lines
2.0 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) \
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(*(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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#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,type) (ap += 8, sizeof(type)<=8 ? *(type*)ap : **(type**)ap)
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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) ((int)&((struct {char c;type x;} *)0)->x)
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#define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
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& ~(_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) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
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&~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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#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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