diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/stdarg.h | 52 |
1 files changed, 10 insertions, 42 deletions
diff --git a/include/stdarg.h b/include/stdarg.h index b5844d0..6dd6e9e 100644 --- a/include/stdarg.h +++ b/include/stdarg.h @@ -3,51 +3,19 @@ #ifdef __x86_64__ #ifndef _WIN64 -#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 void *va_list; -typedef struct __va_list_struct *va_list; +va_list __va_start(void *fp); +void *__va_arg(va_list ap, int arg_type, int size); +va_list __va_copy(va_list src); +void __va_end(va_list ap); -/* 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) +#define va_start(ap, last) ((ap) = __va_start(__builtin_frame_address(0))) +#define va_arg(ap, type) \ + (*(type *)(__va_arg(ap, __builtin_va_arg_types(type), sizeof(type)))); +#define va_copy(dest, src) ((dest) = __va_copy(src)) +#define va_end(ap) __va_end(ap) #else /* _WIN64 */ typedef char *va_list; |