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New implementation of va_list/va_start/var_copy that do not use dynamic memory, with this when compiling fossil-scm with tcc on linux X86_64 it works fine.

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mingodad
2014-03-28 20:28:19 +00:00
parent 700c2f769b
commit c025478d7c
2 changed files with 28 additions and 30 deletions
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28
include/stdarg.h
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@ -4,18 +4,28 @@
#ifdef __x86_64__
#ifndef _WIN64
typedef void *va_list;
//This should be in sync with the declaration on our lib/libtcc1.c
/* GCC compatible definition of va_list. */
typedef struct {
unsigned int gp_offset;
unsigned int fp_offset;
union {
unsigned int overflow_offset;
char *overflow_arg_area;
};
char *reg_save_area;
} __va_list_struct;
va_list __va_start(void *fp);
void *__va_arg(va_list ap, int arg_type, int size, int align);
va_list __va_copy(va_list src);
void __va_end(va_list ap);
typedef __va_list_struct va_list;
#define va_start(ap, last) ((ap) = __va_start(__builtin_frame_address(0)))
void __va_start(__va_list_struct *ap, void *fp);
void *__va_arg(__va_list_struct *ap, int arg_type, int size, int align);
#define va_start(ap, last) __va_start(&ap, __builtin_frame_address(0))
#define va_arg(ap, type) \
(*(type *)(__va_arg(ap, __builtin_va_arg_types(type), sizeof(type), __alignof__(type))))
#define va_copy(dest, src) ((dest) = __va_copy(src))
#define va_end(ap) __va_end(ap)
(*(type *)(__va_arg(&ap, __builtin_va_arg_types(type), sizeof(type), __alignof__(type))))
#define va_copy(dest, src) ((dest) = (src))
#define va_end(ap)
#else /* _WIN64 */
typedef char *va_list;