gcc/ginclude/va-sparc.h

   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 #define va_start(AP, LASTARG)   (AP = (char *) __builtin_saveregs ())
  27
  28 #else
  29
  30 #define va_alist  __builtin_va_alist
  31 #define va_dcl
  32 #define va_start(AP)            ((AP) = (char *) __builtin_saveregs ())
  33
  34 #endif
  35
  36 #ifndef va_end
  37 void va_end (__gnuc_va_list);           /* Defined in libgcc.a */
  38 #endif
  39 #define va_end(pvar)
  40
  41 #define __va_rounded_size(TYPE)  \
  42   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  43
  44 /* Avoid errors if compiling GCC v2 with GCC v1.  */
  45 #if __GNUC__ == 1
  46 #define __extension__
  47 #endif
  48
  49 /* RECORD_TYPE args passed using the C calling convention are
  50    passed by invisible reference.  ??? RECORD_TYPE args passed
  51    in the stack are made to be word-aligned; for an aggregate that is
  52    not word-aligned, we advance the pointer to the first non-reg slot.  */
  53 /* We don't declare the union member `d' to have type TYPE
  54    because that would lose in C++ if TYPE has a constructor.  */
  55 /* We cast to void * and then to TYPE * because this avoids
  56    a warning about increasing the alignment requirement.  */
  57 #define va_arg(pvar,TYPE)                                       \
  58 __extension__                                                   \
  59 ({ TYPE __va_temp;                                              \
  60    ((__builtin_classify_type (__va_temp) >= 12)                 \
  61     ? ((pvar) += __va_rounded_size (TYPE *),                    \
  62        **(TYPE **) (void *) ((pvar) - __va_rounded_size (TYPE *))) \
  63     : __va_rounded_size (TYPE) == 8                             \
  64     ? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u;      \
  65          __u.__i[0] = ((int *) (void *) (pvar))[0];             \
  66          __u.__i[1] = ((int *) (void *) (pvar))[1];             \
  67          (pvar) += 8;                                           \
  68          *(TYPE *) (void *) __u.__d; })                         \
  69     : ((pvar) += __va_rounded_size (TYPE),                      \
  70        *((TYPE *) (void *) ((pvar) - __va_rounded_size (TYPE)))));})
  71
  72 #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
  73