| 1 | /* GNU C varargs support for the Motorola 88100 */ |
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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 | |
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| 8 | typedef struct |
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| 9 | { |
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| 10 | int __va_arg; /* argument number */ |
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| 11 | int *__va_stk; /* start of args passed on stack */ |
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| 12 | int *__va_reg; /* start of args passed in regs */ |
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| 13 | } __gnuc_va_list; |
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| 14 | #endif /* not __GNUC_VA_LIST */ |
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| 15 | |
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| 16 | /* If this is for internal libc use, don't define anything but |
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| 17 | __gnuc_va_list. */ |
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| 18 | #if defined (_STDARG_H) || defined (_VARARGS_H) |
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| 19 | |
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| 20 | #ifdef _STDARG_H /* stdarg.h support */ |
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| 21 | |
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| 22 | /* Call __builtin_next_arg even though we aren't using its value, so that |
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| 23 | we can verify that LASTARG is correct. */ |
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| 24 | #if __GNUC__ > 1 /* GCC 2.0 and beyond */ |
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| 25 | #define va_start(AP,LASTARG) \ |
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| 26 | (__builtin_next_arg (LASTARG), \ |
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| 27 | (AP) = *(__gnuc_va_list *)__builtin_saveregs()) |
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| 28 | #else |
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| 29 | #define va_start(AP,LASTARG) \ |
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| 30 | ( (AP).__va_reg = (int *) __builtin_saveregs2(0), \ |
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| 31 | (AP).__va_stk = (int *) __builtin_argptr(), \ |
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| 32 | (AP).__va_arg = (int) (__builtin_argsize() + 3) / 4 ) |
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| 33 | #endif |
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| 34 | |
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| 35 | #else /* varargs.h support */ |
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| 36 | |
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| 37 | #if __GNUC__ > 1 /* GCC 2.0 and beyond */ |
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| 38 | #define va_start(AP) ((AP) = *(__gnuc_va_list *)__builtin_saveregs()) |
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| 39 | #else |
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| 40 | #define va_start(AP) \ |
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| 41 | ( (AP).__va_reg = (int *) __builtin_saveregs2(1), \ |
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| 42 | (AP).__va_stk = (int *) __builtin_argptr(), \ |
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| 43 | (AP).__va_arg = (int) (__builtin_argsize() - 4 + 3) / 4 ) |
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| 44 | #endif |
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| 45 | #define va_alist __va_1st_arg |
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| 46 | #define va_dcl register int va_alist;... |
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| 47 | |
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| 48 | #endif /* _STDARG_H */ |
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| 49 | |
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| 50 | /* Avoid trouble between this file and _int_varargs.h under DG/UX. This file |
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| 51 | can be included by <stdio.h> and others and provides definitions of |
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| 52 | __va_size and __va_reg_p and a va_list typedef. Avoid defining va_list |
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| 53 | again with _VA_LIST. */ |
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| 54 | #ifdef __INT_VARARGS_H |
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| 55 | #undef __va_size |
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| 56 | #undef __va_reg_p |
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| 57 | #define __gnuc_va_list va_list |
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| 58 | #define _VA_LIST |
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| 59 | #define _VA_LIST_ |
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| 60 | #else |
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| 61 | /* Similarly, if this gets included first, do nothing in _int_varargs.h. */ |
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| 62 | #define __INT_VARARGS_H |
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| 63 | #endif |
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| 64 | |
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| 65 | #define __va_reg_p(TYPE) \ |
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| 66 | (__builtin_classify_type(*(TYPE *)0) < 12 \ |
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| 67 | ? sizeof(TYPE) <= 8 : sizeof(TYPE) == 4 && __alignof__(TYPE) == 4) |
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| 68 | |
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| 69 | #define __va_size(TYPE) ((sizeof(TYPE) + 3) >> 2) |
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| 70 | |
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| 71 | /* We cast to void * and then to TYPE * because this avoids |
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| 72 | a warning about increasing the alignment requirement. */ |
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| 73 | #define va_arg(AP,TYPE) \ |
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| 74 | ( (AP).__va_arg = (((AP).__va_arg + (1 << (__alignof__(TYPE) >> 3)) - 1) \ |
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| 75 | & ~((1 << (__alignof__(TYPE) >> 3)) - 1)) \ |
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| 76 | + __va_size(TYPE), \ |
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| 77 | *((TYPE *) (void *) ((__va_reg_p(TYPE) \ |
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| 78 | && (AP).__va_arg < 8 + __va_size(TYPE) \ |
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| 79 | ? (AP).__va_reg : (AP).__va_stk) \ |
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| 80 | + ((AP).__va_arg - __va_size(TYPE))))) |
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| 81 | |
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| 82 | #define va_end(AP) ((void)0) |
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| 83 | |
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| 84 | #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */ |
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