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 __M32R__
  45 #include "va-m32r.h"
  46 #else
  47 #ifdef __sh__
  48 #include "va-sh.h"
  49 #else
  50 #ifdef __mn10300__
  51 #include "va-mn10300.h"
  52 #else
  53 #ifdef __mn10200__
  54 #include "va-mn10200.h"
  55 #else
  56
  57 /* Define __gnuc_va_list.  */
  58
  59 #ifndef __GNUC_VA_LIST
  60 #define __GNUC_VA_LIST
  61 #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX) || defined(__NetBSD__)
  62 typedef char *__gnuc_va_list;
  63 #else
  64 typedef void *__gnuc_va_list;
  65 #endif
  66 #endif
  67
  68 /* Define the standard macros for the user,
  69    if this invocation was from the user program.  */
  70 #ifdef _STDARG_H
  71
  72 /* Amount of space required in an argument list for an arg of type TYPE.
  73    TYPE may alternatively be an expression whose type is used.  */
  74
  75 #if defined(sysV68)
  76 #define __va_rounded_size(TYPE)  \
  77   (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
  78 #else
  79 #define __va_rounded_size(TYPE)  \
  80   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  81 #endif
  82
  83 #define va_start(AP, LASTARG)                                           \
  84  (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
  85
  86 #undef va_end
  87 void va_end (__gnuc_va_list);           /* Defined in libgcc.a */
  88 #define va_end(AP)      ((void)0)
  89
  90 /* We cast to void * and then to TYPE * because this avoids
  91    a warning about increasing the alignment requirement.  */
  92
  93 #if defined (__arm__) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
  94 /* This is for little-endian machines; small args are padded upward.  */
  95 #define va_arg(AP, TYPE)                                                \
  96  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
  97   *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
  98 #else /* big-endian */
  99 /* This is for big-endian machines; small args are padded downward.  */
 100 #define va_arg(AP, TYPE)                                                \
 101  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 102   *((TYPE *) (void *) ((char *) (AP)                                    \
 103                        - ((sizeof (TYPE) < __va_rounded_size (char)     \
 104                            ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
 105 #endif /* big-endian */
 106
 107 /* Copy __gnuc_va_list into another variable of this type.  */
 108 #define __va_copy(dest, src) (dest) = (src)
 109
 110 #endif /* _STDARG_H */
 111
 112 #endif /* not mn10200 */
 113 #endif /* not mn10300 */
 114 #endif /* not sh */
 115 #endif /* not m32r */
 116 #endif /* not powerpc with V.4 calling sequence */
 117 #endif /* not h8300 */
 118 #endif /* not alpha */
 119 #endif /* not i960 */
 120 #endif /* not sparc */
 121 #endif /* not mips */
 122 #endif /* not hppa */
 123 #endif /* not i860 */
 124 #endif /* not m88k */
 125 #endif /* not clipper */
 126
 127 #ifdef _STDARG_H
 128 /* Define va_list, if desired, from __gnuc_va_list. */
 129 /* We deliberately do not define va_list when called from
 130    stdio.h, because ANSI C says that stdio.h is not supposed to define
 131    va_list.  stdio.h needs to have access to that data type,
 132    but must not use that name.  It should use the name __gnuc_va_list,
 133    which is safe because it is reserved for the implementation.  */
 134
 135 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
 136 #undef _VA_LIST
 137 #endif
 138
 139 #ifdef _BSD_VA_LIST
 140 #undef _BSD_VA_LIST
 141 #endif
 142
 143 #if defined(__svr4__) || (defined(_SCO_DS) && !defined(__VA_LIST))
 144 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
 145    so we must avoid testing it and setting it here.
 146    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
 147    have no conflict with that.  */
 148 #ifndef _VA_LIST_
 149 #define _VA_LIST_
 150 #ifdef __i860__
 151 #ifndef _VA_LIST
 152 #define _VA_LIST va_list
 153 #endif
 154 #endif /* __i860__ */
 155 typedef __gnuc_va_list va_list;
 156 #ifdef _SCO_DS
 157 #define __VA_LIST
 158 #endif
 159 #endif /* _VA_LIST_ */
 160 #else /* not __svr4__ || _SCO_DS */
 161
 162 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
 163    But on BSD NET2 we must not test or define or undef it.
 164    (Note that the comments in NET 2's ansi.h
 165    are incorrect for _VA_LIST_--see stdio.h!)  */
 166 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
 167 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 168 #ifndef _VA_LIST_DEFINED
 169 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 170 #ifndef _VA_LIST
 171 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 172 #ifndef _VA_LIST_T_H
 173 typedef __gnuc_va_list va_list;
 174 #endif /* not _VA_LIST_T_H */
 175 #endif /* not _VA_LIST */
 176 #endif /* not _VA_LIST_DEFINED */
 177 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 178 #define _VA_LIST_
 179 #endif
 180 #ifndef _VA_LIST
 181 #define _VA_LIST
 182 #endif
 183 #ifndef _VA_LIST_DEFINED
 184 #define _VA_LIST_DEFINED
 185 #endif
 186 #ifndef _VA_LIST_T_H
 187 #define _VA_LIST_T_H
 188 #endif
 189
 190 #endif /* not _VA_LIST_, except on certain systems */
 191
 192 #endif /* not __svr4__ */
 193
 194 #endif /* _STDARG_H */
 195
 196 #endif /* not _ANSI_STDARG_H_ */
 197 #endif /* not _STDARG_H */