[8833] | 1 | /* GNU C varargs support for the Intel 80960. */ |
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| 2 | |
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| 3 | /* Define __gnuc_va_list. */ |
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| 4 | |
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| 5 | #ifndef __GNUC_VA_LIST |
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| 6 | #define __GNUC_VA_LIST |
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| 7 | /* The first element is the address of the first argument. |
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| 8 | The second element is the number of bytes skipped past so far. */ |
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| 9 | typedef unsigned __gnuc_va_list[2]; |
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| 10 | #endif /* not __GNUC_VA_LIST */ |
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| 11 | |
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| 12 | /* If this is for internal libc use, don't define anything but |
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| 13 | __gnuc_va_list. */ |
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| 14 | #if defined (_STDARG_H) || defined (_VARARGS_H) |
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| 15 | |
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| 16 | /* In GCC version 2, we want an ellipsis at the end of the declaration |
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| 17 | of the argument list. GCC version 1 can't parse it. */ |
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| 18 | |
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| 19 | #if __GNUC__ > 1 |
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| 20 | #define __va_ellipsis ... |
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| 21 | #else |
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| 22 | #define __va_ellipsis |
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| 23 | #endif |
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| 24 | |
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| 25 | /* The stack size of the type t. */ |
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| 26 | #define __vsiz(T) (((sizeof (T) + 3) / 4) * 4) |
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| 27 | /* The stack alignment of the type t. */ |
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| 28 | #define __vali(T) (__alignof__ (T) >= 4 ? __alignof__ (T) : 4) |
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| 29 | /* The offset of the next stack argument after one of type t at offset i. */ |
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| 30 | #define __vpad(I, T) ((((I) + __vali (T) - 1) / __vali (T)) \ |
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| 31 | * __vali (T) + __vsiz (T)) |
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| 32 | |
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| 33 | /* Avoid errors if compiling GCC v2 with GCC v1. */ |
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| 34 | #if __GNUC__ == 1 |
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| 35 | #define __extension__ |
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| 36 | #endif |
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| 37 | |
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| 38 | #ifdef _STDARG_H |
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| 39 | /* Call __builtin_next_arg even though we aren't using its value, so that |
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| 40 | we can verify that firstarg is correct. */ |
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| 41 | #define va_start(AP, LASTARG) \ |
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| 42 | __extension__ \ |
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| 43 | ({ __builtin_next_arg (LASTARG); \ |
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| 44 | __asm__ ("st g14,%0" : "=m" (*(AP))); \ |
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| 45 | (AP)[1] = (__builtin_args_info (0) + __builtin_args_info (1)) * 4; }) |
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| 46 | |
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| 47 | #else |
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| 48 | |
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| 49 | #define va_alist __builtin_va_alist |
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| 50 | #define va_dcl char *__builtin_va_alist; __va_ellipsis |
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| 51 | #define va_start(AP) \ |
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| 52 | __extension__ \ |
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| 53 | ({ __asm__ ("st g14,%0" : "=m" (*(AP))); \ |
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| 54 | (AP)[1] = (__builtin_args_info (0) + __builtin_args_info (1)) * 4; }) |
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| 55 | #endif |
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| 56 | |
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| 57 | /* We cast to void * and then to TYPE * because this avoids |
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| 58 | a warning about increasing the alignment requirement. */ |
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| 59 | #define va_arg(AP, T) \ |
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| 60 | ( \ |
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| 61 | ( \ |
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| 62 | ((AP)[1] <= 48 && (__vpad ((AP)[1], T) > 48 || __vsiz (T) > 16)) \ |
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| 63 | ? ((AP)[1] = 48 + __vsiz (T)) \ |
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| 64 | : ((AP)[1] = __vpad ((AP)[1], T)) \ |
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| 65 | ), \ |
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| 66 | \ |
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| 67 | *((T *) (void *) ((char *) *(AP) + (AP)[1] - __vsiz (T))) \ |
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| 68 | ) |
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| 69 | |
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| 70 | #ifndef va_end |
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| 71 | void va_end (__gnuc_va_list); /* Defined in libgcc.a */ |
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| 72 | #endif |
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| 73 | #define va_end(AP) ((void *)0) |
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| 74 | |
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[11287] | 75 | /* Copy __gnuc_va_list into another variable of this type. */ |
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| 76 | #define __va_copy(dest, src) (dest) = (src) |
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| 77 | |
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[8833] | 78 | #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */ |
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| 79 | |
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