diff options
Diffstat (limited to 'sysdeps/generic/varargs.h')
-rw-r--r-- | sysdeps/generic/varargs.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sysdeps/generic/varargs.h b/sysdeps/generic/varargs.h new file mode 100644 index 0000000..3500480 --- /dev/null +++ b/sysdeps/generic/varargs.h @@ -0,0 +1,61 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _VARARGS_H + +#define _VARARGS_H 1 +#include <features.h> + +#ifdef __GNUC__ + +#define va_alist __builtin_va_alist +#define va_dcl int __builtin_va_alist; +#define va_list char * + +#ifdef __sparc__ +#define va_start(AP) \ + (__builtin_saveregs (), \ + AP = ((void *) &__builtin_va_alist)) +#else +#define va_start(AP) AP=(char *) &__builtin_va_alist +#endif +#define va_end(AP) + +#define __va_rounded_size(TYPE) \ + (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) + +#define va_arg(AP, TYPE) \ + (*((TYPE *) (AP += __va_rounded_size (TYPE), \ + AP - __va_rounded_size (TYPE)))) + +#else /* Not GCC. */ + +/* Implement varargs on top of our stdarg implementation. */ + +#include <stdarg.h> + +#define va_alist __va_fakearg +#define va_dcl int __va_fakearg; + +#undef va_start +#define va_start(ap) (__va_start((ap), __va_fakearg), \ + (ap) -= sizeof(__va_fakearg)) + +#endif /* GCC. */ + +#endif /* varargs.h */ |