blob: 98aa09eb17f4afcd5301133a4da7a0a2ea1088aa (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* This is just like the default gvarargs.h
except for differences decribed below. */
/* va_list is a structure instead of a char*. */
typedef struct __va_ctl
{
char *__stack; /* Current pointer for fetching args. */
char *__beg; /* Pointer to position of first saved register arg. */
} va_list;
#define va_alist __builtin_va_alist
#define va_dcl int __builtin_va_alist;
/* The difference is to store the stack address in both components
instead of in AP itself. */
#define va_start(AP) \
(__builtin_saveregs (), \
(AP).__beg = (AP).__stack = ((char *) &__builtin_va_alist))
#define va_end(pvar)
#define __va_rounded_size(TYPE) \
(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
/* The difference is that, for an aggregate that is not word-aligned,
we advance (pvar).__stack to the first non-reg slot. */
#define va_arg(pvar,TYPE) \
({ TYPE __va_temp; \
((__builtin_classify_type (__va_temp) < 12 \
|| __alignof__ __va_temp >= 4) \
? ((pvar).__stack += __va_rounded_size (TYPE), \
*((TYPE *) ((pvar).__stack - __va_rounded_size (TYPE)))) \
: ((((pvar).__stack - (pvar).__beg < 24) \
? (pvar).__stack = (pvar).__beg + 24 : 0), \
(pvar).__stack += __va_rounded_size (TYPE), \
*((TYPE *) ((pvar).__stack - __va_rounded_size (TYPE)))));})
|
