sys/arch/powerpc/include/varargs.h

   1 /*      $NetBSD: varargs.h,v 1.7 2002/06/01 09:22:44 tsubai Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef _POWERPC_VARARGS_H_
  30 #define _POWERPC_VARARGS_H_
  31
  32 #include <machine/stdarg.h>
  33
  34 #define va_alist        __builtin_va_alist
  35 #define va_dcl          int va_alist; ...
  36
  37 #undef va_start
  38
  39 #ifdef __lint__
  40 #define va_start(ap)    ((ap) = *(va_list *)0)
  41 #elif __GNUC_PREREQ__(3, 0)
  42 #define va_start(ap)    __builtin_varargs_start((ap).__va)
  43 #elif __GNUC_PREREQ__(2, 95)
  44 #define va_start(ap)    ((ap) = *(va_list *)__builtin_saveregs())
  45 #undef va_alist
  46 #define va_alist __va_1st_arg
  47 #else
  48 #define va_start(ap)                                                    \
  49         ((ap).__stack = __va_stack_args,                                \
  50          (ap).__base = __va_reg_args,                                   \
  51          (ap).__gpr = __va_first_gpr,                                   \
  52          (ap).__fpr = __va_first_fpr)
  53 #endif
  54
  55 #endif /* _POWERPC_VARARGS_H_ */