gcc/ginclude/stdarg.h

   1 /* stdarg.h for GNU.
   2    Note that the type used in va_arg is supposed to match the
   3    actual type **after default promotions**.
   4    Thus, va_arg (..., short) is not valid.  */
   5
   6 #ifndef _STDARG_H
   7 #ifndef _ANSI_STDARG_H_
   8 #ifndef __need___va_list
   9 #define _STDARG_H
  10 #define _ANSI_STDARG_H_
  11 #endif /* not __need___va_list */
  12 #undef __need___va_list
  13
  14 #ifdef __clipper__
  15 #include "va-clipper.h"
  16 #else
  17 #ifdef __m88k__
  18 #include "va-m88k.h"
  19 #else
  20 #ifdef __i860__
  21 #include "va-i860.h"
  22 #else
  23 #ifdef __hppa__
  24 #include "va-pa.h"
  25 #else
  26 #ifdef __mips__
  27 #include "va-mips.h"
  28 #else
  29 #ifdef __sparc__
  30 #include "va-sparc.h"
  31 #else
  32 #ifdef __i960__
  33 #include "va-i960.h"
  34 #else
  35 #ifdef __alpha__
  36 #include "va-alpha.h"
  37 #else
  38 #if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__)
  39 #include "va-h8300.h"
  40 #else
  41 #if defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
  42 #include "va-ppc.h"
  43 #else
  44 #ifdef __sh__
  45 #include "va-sh.h"
  46 #else
  47 #ifdef __mn10300__
  48 #include "va-mn10300.h"
  49 #else
  50
  51 /* Define __gnuc_va_list.  */
  52
  53 #ifndef __GNUC_VA_LIST
  54 #define __GNUC_VA_LIST
  55 #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX) || defined(__NetBSD__)
  56 typedef char *__gnuc_va_list;
  57 #else
  58 typedef void *__gnuc_va_list;
  59 #endif
  60 #endif
  61
  62 /* Define the standard macros for the user,
  63    if this invocation was from the user program.  */
  64 #ifdef _STDARG_H
  65
  66 /* Amount of space required in an argument list for an arg of type TYPE.
  67    TYPE may alternatively be an expression whose type is used.  */
  68
  69 #if defined(sysV68)
  70 #define __va_rounded_size(TYPE)  \
  71   (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
  72 #else
  73 #define __va_rounded_size(TYPE)  \
  74   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  75 #endif
  76
  77 #define va_start(AP, LASTARG)                                           \
  78  (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
  79
  80 #undef va_end
  81 void va_end (__gnuc_va_list);           /* Defined in libgcc.a */
  82 #define va_end(AP)      ((void)0)
  83
  84 /* We cast to void * and then to TYPE * because this avoids
  85    a warning about increasing the alignment requirement.  */
  86
  87 #if defined (__arm__) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
  88 /* This is for little-endian machines; small args are padded upward.  */
  89 #define va_arg(AP, TYPE)                                                \
  90  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
  91   *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
  92 #else /* big-endian */
  93 /* This is for big-endian machines; small args are padded downward.  */
  94 #define va_arg(AP, TYPE)                                                \
  95  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
  96   *((TYPE *) (void *) ((char *) (AP)                                    \
  97                        - ((sizeof (TYPE) < __va_rounded_size (char)     \
  98                            ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
  99 #endif /* big-endian */
 100
 101 /* Copy __gnuc_va_list into another variable of this type.  */
 102 #define __va_copy(dest, src) (dest) = (src)
 103
 104 #endif /* _STDARG_H */
 105
 106 #endif /* not mn10300 */
 107 #endif /* not sh */
 108 #endif /* not powerpc with V.4 calling sequence */
 109 #endif /* not h8300 */
 110 #endif /* not alpha */
 111 #endif /* not i960 */
 112 #endif /* not sparc */
 113 #endif /* not mips */
 114 #endif /* not hppa */
 115 #endif /* not i860 */
 116 #endif /* not m88k */
 117 #endif /* not clipper */
 118
 119 #ifdef _STDARG_H
 120 /* Define va_list, if desired, from __gnuc_va_list. */
 121 /* We deliberately do not define va_list when called from
 122    stdio.h, because ANSI C says that stdio.h is not supposed to define
 123    va_list.  stdio.h needs to have access to that data type,
 124    but must not use that name.  It should use the name __gnuc_va_list,
 125    which is safe because it is reserved for the implementation.  */
 126
 127 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
 128 #undef _VA_LIST
 129 #endif
 130
 131 #ifdef _BSD_VA_LIST
 132 #undef _BSD_VA_LIST
 133 #endif
 134
 135 #if defined(__svr4__) || defined(_SCO_DS)
 136 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
 137    so we must avoid testing it and setting it here.
 138    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
 139    have no conflict with that.  */
 140 #ifndef _VA_LIST_
 141 #define _VA_LIST_
 142 #ifdef __i860__
 143 #ifndef _VA_LIST
 144 #define _VA_LIST va_list
 145 #endif
 146 #endif /* __i860__ */
 147 typedef __gnuc_va_list va_list;
 148 #endif /* _VA_LIST_ */
 149 #else /* not __svr4__ || _SCO_DS */
 150
 151 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
 152    But on BSD NET2 we must not test or define or undef it.
 153    (Note that the comments in NET 2's ansi.h
 154    are incorrect for _VA_LIST_--see stdio.h!)  */
 155 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
 156 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 157 #ifndef _VA_LIST_DEFINED
 158 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 159 #ifndef _VA_LIST
 160 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 161 #ifndef _VA_LIST_T_H
 162 typedef __gnuc_va_list va_list;
 163 #endif /* not _VA_LIST_T_H */
 164 #endif /* not _VA_LIST */
 165 #endif /* not _VA_LIST_DEFINED */
 166 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 167 #define _VA_LIST_
 168 #endif
 169 #ifndef _VA_LIST
 170 #define _VA_LIST
 171 #endif
 172 #ifndef _VA_LIST_DEFINED
 173 #define _VA_LIST_DEFINED
 174 #endif
 175 #ifndef _VA_LIST_T_H
 176 #define _VA_LIST_T_H
 177 #endif
 178
 179 #endif /* not _VA_LIST_, except on certain systems */
 180
 181 #endif /* not __svr4__ */
 182
 183 #endif /* _STDARG_H */
 184
 185 #endif /* not _ANSI_STDARG_H_ */
 186 #endif /* not _STDARG_H */