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Annotation of gcc/va-mips.h, revision 1.1.1.3

1.1       root        1: /* ---------------------------------------- */
                      2: /*           VARARGS  for MIPS/GNU CC       */
                      3: /*                                          */
                      4: /*                                          */
                      5: /*                                          */
                      6: /*                                          */
                      7: /* ---------------------------------------- */
                      8: 
                      9: 
1.1.1.3 ! root       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)
1.1       root       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: 
1.1.1.3 ! root       32: #define __va_rounded_size(__TYPE)  \
        !            33:   (((sizeof (__TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
1.1       root       34: 
                     35: #ifdef _STDARG_H
1.1.1.3 ! root       36: #define va_start(__AP, __LASTARG)                                              \
        !            37:  (__AP = ((char *) &(__LASTARG) + __va_rounded_size (__LASTARG)))
        !            38: 
1.1       root       39: #else
1.1.1.2   root       40: #define va_alist  __builtin_va_alist
                     41: #define va_dcl    int __builtin_va_alist; __va_ellipsis
1.1.1.3 ! root       42: #define va_start(__AP)  __AP = (char *) &__builtin_va_alist
1.1       root       43: #endif
                     44: 
1.1.1.3 ! root       45: #ifndef va_end
        !            46: void va_end (__gnuc_va_list);          /* Defined in libgcc.a */
        !            47: #endif
        !            48: #define va_end(__AP)
1.1       root       49: 
                     50: #ifdef lint    /* complains about constant in conditional context */
1.1.1.3 ! root       51: #define va_arg(list, mode) ((mode *)(list += __va_rounded_size(mode)))[-1]
1.1       root       52: 
                     53: #else          /* !lint */
1.1.1.3 ! root       54: /* We cast to void * and then to TYPE * because this avoids
        !            55:    a warning about increasing the alignment requirement.  */
        !            56: #define va_arg(__AP, __type)                                               \
        !            57:   ((__type *) (void *) (__AP = (char *) ((__alignof(__type) > 4                    \
        !            58:                                          ? ((int)__AP + 8 - 1) & -8        \
        !            59:                                          : ((int)__AP + 4 - 1) & -4)       \
        !            60:                                         + __va_rounded_size(__type))))[-1]
1.1       root       61: #endif         /* lint */
                     62: 
1.1.1.3 ! root       63: #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */

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