diff options
Diffstat (limited to 'tinyc/lib/va_list.c')
-rw-r--r-- | tinyc/lib/va_list.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/tinyc/lib/va_list.c b/tinyc/lib/va_list.c deleted file mode 100644 index 8749f46f8..000000000 --- a/tinyc/lib/va_list.c +++ /dev/null @@ -1,65 +0,0 @@ -/* va_list.c - tinycc support for va_list on X86_64 */ - -#if defined __x86_64__ - -/* Avoid include files, they may not be available when cross compiling */ -extern void *memset(void *s, int c, __SIZE_TYPE__ n); -extern void abort(void); - -/* This should be in sync with our include/stdarg.h */ -enum __va_arg_type { - __va_gen_reg, __va_float_reg, __va_stack -}; - -/* 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; - -void __va_start(__va_list_struct *ap, void *fp) -{ - memset(ap, 0, sizeof(__va_list_struct)); - *ap = *(__va_list_struct *)((char *)fp - 16); - ap->overflow_arg_area = (char *)fp + ap->overflow_offset; - ap->reg_save_area = (char *)fp - 176 - 16; -} - -void *__va_arg(__va_list_struct *ap, - enum __va_arg_type arg_type, - int size, int align) -{ - size = (size + 7) & ~7; - align = (align + 7) & ~7; - switch (arg_type) { - case __va_gen_reg: - if (ap->gp_offset + size <= 48) { - ap->gp_offset += size; - return ap->reg_save_area + ap->gp_offset - size; - } - goto use_overflow_area; - - case __va_float_reg: - if (ap->fp_offset < 128 + 48) { - ap->fp_offset += 16; - return ap->reg_save_area + ap->fp_offset - 16; - } - size = 8; - goto use_overflow_area; - - case __va_stack: - use_overflow_area: - ap->overflow_arg_area += size; - ap->overflow_arg_area = (char*)((long long)(ap->overflow_arg_area + align - 1) & -align); - return ap->overflow_arg_area - size; - - default: /* should never happen */ - abort(); - } -} -#endif |