lib/gcc-lib/i686-pc-msys/2.95.3-1/include/va-arc.h

   1 /* stdarg/varargs support for the ARC */
   2
   3 /* Define __gnuc_va_list.  */
   4
   5 #ifndef __GNUC_VA_LIST
   6 #define __GNUC_VA_LIST
   7 typedef void * __gnuc_va_list;
   8 #endif /* not __GNUC_VA_LIST */
   9
  10 /* If this is for internal libc use, don't define anything but
  11    __gnuc_va_list.  */
  12 #if defined (_STDARG_H) || defined (_VARARGS_H)
  13
  14 /* In GCC version 2, we want an ellipsis at the end of the declaration
  15    of the argument list.  GCC version 1 can't parse it.  */
  16
  17 #if __GNUC__ > 1
  18 #define __va_ellipsis ...
  19 #else
  20 #define __va_ellipsis
  21 #endif
  22
  23 /* See arc_setup_incoming_varargs for reasons for the oddity in va_start.  */
  24 #ifdef _STDARG_H
  25 #define va_start(AP, LASTARG) \
  26 (AP = (__gnuc_va_list) ((int *) __builtin_next_arg (LASTARG) \
  27                         + (__builtin_args_info (0) < 8 \
  28                            ? (__builtin_args_info (0) & 1) \
  29                            : 0)))
  30 #else
  31 #define va_alist  __builtin_va_alist
  32 #define va_dcl    int __builtin_va_alist; __va_ellipsis
  33 #define va_start(AP) \
  34 (AP = (__gnuc_va_list) ((int *) &__builtin_va_alist \
  35                         + (__builtin_args_info (0) < 8 \
  36                            ? (__builtin_args_info (0) & 1) \
  37                            : 0)))
  38 #endif
  39
  40 #ifndef va_end
  41 void va_end (__gnuc_va_list);           /* Defined in libgcc.a */
  42
  43 /* Values returned by __builtin_classify_type.  */
  44
  45 enum __va_type_classes {
  46   __no_type_class = -1,
  47   __void_type_class,
  48   __integer_type_class,
  49   __char_type_class,
  50   __enumeral_type_class,
  51   __boolean_type_class,
  52   __pointer_type_class,
  53   __reference_type_class,
  54   __offset_type_class,
  55   __real_type_class,
  56   __complex_type_class,
  57   __function_type_class,
  58   __method_type_class,
  59   __record_type_class,
  60   __union_type_class,
  61   __array_type_class,
  62   __string_type_class,
  63   __set_type_class,
  64   __file_type_class,
  65   __lang_type_class
  66 };
  67
  68 #endif
  69 #define va_end(AP)      ((void)0)
  70
  71 /* Avoid errors if compiling GCC v2 with GCC v1.  */
  72 #if __GNUC__ == 1
  73 #define __extension__
  74 #endif
  75
  76 /* All aggregates are passed by reference.  All scalar types larger than 8
  77    bytes are passed by reference.  */
  78 /* We cast to void * and then to TYPE * because this avoids
  79    a warning about increasing the alignment requirement.
  80    The casts to char * avoid warnings about invalid pointer arithmetic.  */
  81
  82 #define __va_rounded_size(TYPE)  \
  83   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  84
  85 #ifdef __big_endian__
  86 #define va_arg(AP,TYPE) \
  87 __extension__                                                   \
  88 (*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
  89       || __va_rounded_size (TYPE) > 8)                          \
  90      ? ((AP) = (char *)(AP) + __va_rounded_size (TYPE *),       \
  91         *(TYPE **) (void *) ((char *)(AP) - __va_rounded_size (TYPE *))) \
  92      : ((TYPE *) (void *)                                       \
  93         (AP = (void *) ((__alignof__ (TYPE) > 4                 \
  94                          ? ((int) AP + 8 - 1) & -8              \
  95                          : (int) AP)                            \
  96                          + __va_rounded_size (TYPE))) - 1));}))
  97 #else
  98 #define va_arg(AP,TYPE) \
  99 __extension__                                                   \
 100 (*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
 101       || __va_rounded_size (TYPE) > 8)                          \
 102      ? ((AP) = (char *)(AP) + __va_rounded_size (TYPE *),       \
 103         *(TYPE **) (void *) ((char *)(AP) - __va_rounded_size (TYPE *))) \
 104      : ((AP = (void *) ((__alignof__ (TYPE) > 4                 \
 105                         ? ((int) AP + 8 - 1) & -8               \
 106                         : (int) AP)                             \
 107                        + __va_rounded_size (TYPE))),            \
 108         (TYPE *) (void *) (AP - __va_rounded_size (TYPE))));}))
 109 #endif
 110
 111 #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */