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Annotation of GNUtools/cc/va-mips.h, revision 1.1

1.1     ! root        1: /* ---------------------------------------- */
        !             2: /*           VARARGS  for MIPS/GNU CC       */
        !             3: /*                                          */
        !             4: /*                                          */
        !             5: /*                                          */
        !             6: /*                                          */
        !             7: /* ---------------------------------------- */
        !             8: 
        !             9: 
        !            10: /* These macros implement varargs for GNU C--either traditional or ANSU.  */
        !            11: 
        !            12: /* Define __gnuc_va_list.  */
        !            13: 
        !            14: #ifndef __GNUC_VA_LIST
        !            15: #define __GNUC_VA_LIST
        !            16: typedef char * __gnuc_va_list;
        !            17: #endif /* not __GNUC_VA_LIST */
        !            18: 
        !            19: /* If this is for internal libc use, don't define anything but
        !            20:    __gnuc_va_list.  */
        !            21: #if defined (_STDARG_H) || defined (_VARARGS_H)
        !            22: 
        !            23: /* In GCC version 2, we want an ellipsis at the end of the declaration
        !            24:    of the argument list.  GCC version 1 can't parse it.  */
        !            25: 
        !            26: #if __GNUC__ > 1
        !            27: #define __va_ellipsis ...
        !            28: #else
        !            29: #define __va_ellipsis
        !            30: #endif
        !            31: 
        !            32: #define __va_rounded_size(__TYPE)  \
        !            33:   (((sizeof (__TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
        !            34: 
        !            35: #ifdef _STDARG_H
        !            36: #define va_start(__AP, __LASTARG)                                              \
        !            37:  (__AP = ((char *) &(__LASTARG) + __va_rounded_size (__LASTARG)))
        !            38: 
        !            39: #else
        !            40: #define va_alist  __builtin_va_alist
        !            41: #define va_dcl    int __builtin_va_alist; __va_ellipsis
        !            42: #define va_start(__AP)  __AP = (char *) &__builtin_va_alist
        !            43: #endif
        !            44: 
        !            45: #ifndef va_end
        !            46: void va_end (__gnuc_va_list);          /* Defined in libgcc.a */
        !            47: #endif
        !            48: #define va_end(__AP)
        !            49: 
        !            50: /* We cast to void * and then to TYPE * because this avoids
        !            51:    a warning about increasing the alignment requirement.  */
        !            52: #ifdef __MIPSEB__
        !            53: /* For big-endian machines.  */
        !            54: #define va_arg(__AP, __type)                                   \
        !            55:   ((__AP = (char *) ((__alignof__ (__type) > 4                 \
        !            56:                      ? ((int)__AP + 8 - 1) & -8                \
        !            57:                      : ((int)__AP + 4 - 1) & -4)               \
        !            58:                     + __va_rounded_size (__type))),            \
        !            59:    *(__type *) (void *) (__AP - __va_rounded_size (__type)))
        !            60: #else
        !            61: /* For little-endian machines.  */
        !            62: #define va_arg(__AP, __type)                                               \
        !            63:   ((__type *) (void *) (__AP = (char *) ((__alignof__(__type) > 4          \
        !            64:                                          ? ((int)__AP + 8 - 1) & -8        \
        !            65:                                          : ((int)__AP + 4 - 1) & -4)       \
        !            66:                                         + __va_rounded_size(__type))))[-1]
        !            67: #endif
        !            68: 
        !            69: #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */

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