diff options
author | pommicket <pommicket@gmail.com> | 2022-02-17 13:22:13 -0500 |
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committer | pommicket <pommicket@gmail.com> | 2022-02-17 13:22:13 -0500 |
commit | e900dd8d6f2ff7cef66fbd31898d375b71ef53d6 (patch) | |
tree | ae732e8f5d6163acb78355ae4e5ca69d6e0c995e /05/tcc-0.9.25/include/stdarg.h | |
parent | 6e1158f49aa014b801b171b358c47389e7f9964e (diff) |
procuding a (non-working) executable for tcc
Diffstat (limited to '05/tcc-0.9.25/include/stdarg.h')
-rw-r--r-- | 05/tcc-0.9.25/include/stdarg.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/05/tcc-0.9.25/include/stdarg.h b/05/tcc-0.9.25/include/stdarg.h new file mode 100644 index 0000000..86e556c --- /dev/null +++ b/05/tcc-0.9.25/include/stdarg.h @@ -0,0 +1,67 @@ +#ifndef _STDARG_H +#define _STDARG_H + +#ifdef __x86_64__ +#include <stdlib.h> + +/* GCC compatible definition of va_list. */ +struct __va_list_struct { + unsigned int gp_offset; + unsigned int fp_offset; + union { + unsigned int overflow_offset; + char *overflow_arg_area; + }; + char *reg_save_area; +}; + +typedef struct __va_list_struct *va_list; + +/* we use __builtin_(malloc|free) to avoid #define malloc tcc_malloc */ +/* XXX: this lacks the support of aggregated types. */ +#define va_start(ap, last) \ + (ap = (va_list)__builtin_malloc(sizeof(struct __va_list_struct)), \ + *ap = *(struct __va_list_struct*)( \ + (char*)__builtin_frame_address(0) - 16), \ + ap->overflow_arg_area = ((char *)__builtin_frame_address(0) + \ + ap->overflow_offset), \ + ap->reg_save_area = (char *)__builtin_frame_address(0) - 176 - 16 \ + ) +#define va_arg(ap, type) \ + (*(type*)(__builtin_types_compatible_p(type, long double) \ + ? (ap->overflow_arg_area += 16, \ + ap->overflow_arg_area - 16) \ + : __builtin_types_compatible_p(type, double) \ + ? (ap->fp_offset < 128 + 48 \ + ? (ap->fp_offset += 16, \ + ap->reg_save_area + ap->fp_offset - 16) \ + : (ap->overflow_arg_area += 8, \ + ap->overflow_arg_area - 8)) \ + : (ap->gp_offset < 48 \ + ? (ap->gp_offset += 8, \ + ap->reg_save_area + ap->gp_offset - 8) \ + : (ap->overflow_arg_area += 8, \ + ap->overflow_arg_area - 8)) \ + )) +#define va_copy(dest, src) \ + ((dest) = (va_list)malloc(sizeof(struct __va_list_struct)), \ + *(dest) = *(src)) +#define va_end(ap) __builtin_free(ap) + +#else + +typedef char *va_list; + +/* only correct for i386 */ +#define va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3) +#define va_arg(ap,type) (ap += (sizeof(type)+3)&~3, *(type *)(ap - ((sizeof(type)+3)&~3))) +#define va_copy(dest, src) (dest) = (src) +#define va_end(ap) + +#endif + +/* fix a buggy dependency on GCC in libio.h */ +typedef va_list __gnuc_va_list; +#define _VA_LIST_DEFINED + +#endif /* _STDARG_H */ |