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

1.1     ! root        1: /* This is just like the default gvarargs.h
        !             2:    except for differences described below.  */
        !             3: 
        !             4: /* Define __gnuc_va_list.  */
        !             5: 
        !             6: #ifndef __GNUC_VA_LIST
        !             7: #define __GNUC_VA_LIST
        !             8: 
        !             9: #ifndef __svr4__
        !            10: /* This has to be a char * to be compatible with Sun.
        !            11:    i.e., we have to pass a `va_list' to vsprintf.  */
        !            12: typedef char * __gnuc_va_list;
        !            13: #else
        !            14: /* This has to be a void * to be compatible with Sun svr4.
        !            15:    i.e., we have to pass a `va_list' to vsprintf.  */
        !            16: typedef void * __gnuc_va_list;
        !            17: #endif
        !            18: #endif /* not __GNUC_VA_LIST */
        !            19: 
        !            20: /* If this is for internal libc use, don't define anything but
        !            21:    __gnuc_va_list.  */
        !            22: #if defined (_STDARG_H) || defined (_VARARGS_H)
        !            23: 
        !            24: #ifdef _STDARG_H
        !            25: 
        !            26: #ifdef __GCC_NEW_VARARGS__
        !            27: #define va_start(AP, LASTARG)  (AP = (char *) __builtin_saveregs ())
        !            28: #else
        !            29: #define va_start(AP, LASTARG)                                  \
        !            30:   (__builtin_saveregs (), AP = ((char *) __builtin_next_arg ()))
        !            31: #endif
        !            32: 
        !            33: #else
        !            34: 
        !            35: #define va_alist  __builtin_va_alist
        !            36: #define va_dcl    int __builtin_va_alist;
        !            37: 
        !            38: #ifdef __GCC_NEW_VARARGS__
        !            39: #define va_start(AP)           ((AP) = (char *) __builtin_saveregs ())
        !            40: #else
        !            41: #define va_start(AP)                                           \
        !            42:  (__builtin_saveregs (), (AP) = ((char *) &__builtin_va_alist))
        !            43: #endif
        !            44: 
        !            45: #endif
        !            46: 
        !            47: #ifndef va_end
        !            48: void va_end (__gnuc_va_list);          /* Defined in libgcc.a */
        !            49: #endif
        !            50: #define va_end(pvar)
        !            51: 
        !            52: #define __va_rounded_size(TYPE)  \
        !            53:   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
        !            54: 
        !            55: /* Avoid errors if compiling GCC v2 with GCC v1.  */
        !            56: #if __GNUC__ == 1
        !            57: #define __extension__
        !            58: #endif
        !            59: 
        !            60: /* RECORD_TYPE args passed using the C calling convention are
        !            61:    passed by invisible reference.  ??? RECORD_TYPE args passed
        !            62:    in the stack are made to be word-aligned; for an aggregate that is
        !            63:    not word-aligned, we advance the pointer to the first non-reg slot.  */
        !            64: /* We don't declare the union member `d' to have type TYPE
        !            65:    because that would lose in C++ if TYPE has a constructor.  */
        !            66: /* We cast to void * and then to TYPE * because this avoids
        !            67:    a warning about increasing the alignment requirement.
        !            68:    The casts to char * avoid warnings about invalid pointer arithmetic.  */
        !            69: #define va_arg(pvar,TYPE)                                      \
        !            70: __extension__                                                  \
        !            71: ({ TYPE __va_temp;                                             \
        !            72:    ((__builtin_classify_type (__va_temp) >= 12)                        \
        !            73:     ? ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE *),   \
        !            74:        **(TYPE **) (void *) ((char *)(pvar) - __va_rounded_size (TYPE *))) \
        !            75:     : __va_rounded_size (TYPE) == 8                            \
        !            76:     ? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u;     \
        !            77:         __u.__i[0] = ((int *) (void *) (pvar))[0];             \
        !            78:         __u.__i[1] = ((int *) (void *) (pvar))[1];             \
        !            79:         (pvar) = (char *)(pvar) + 8;                           \
        !            80:         *(TYPE *) (void *) __u.__d; })                         \
        !            81:     : ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE),     \
        !            82:        *((TYPE *) (void *) ((char *)(pvar) - __va_rounded_size (TYPE)))));})
        !            83: 
        !            84: #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
        !            85: 

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