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