116 lines
2.3 KiB
C
116 lines
2.3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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* Copyright © 2021 W. J. van der Laan <laanwj@protonmail.com>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mes/lib.h>
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#include <stdarg.h>
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int
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//stdarg1 (long one, ...)
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stdarg1 (long *one, ...)
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{
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va_list ap;
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char c;
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int r;
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va_start (ap, one);
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#if __GNUC__ && __x86_64__ && !SYSTEM_LIBC
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#define __FUNCTION_ARGS 1
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ap += (__FOO_VARARGS + (__FUNCTION_ARGS << 1)) << 3;
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#undef __FUNCTION_ARGS
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#endif
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c = va_arg (ap, int);
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r = c;
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eputs ("c:");
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eputs (itoa (c));
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eputs ("\n");
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va_end (ap);
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return r;
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}
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int
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///stdarg2 (long one, long two, ...)
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stdarg2 (long *one, long *two, ...)
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{
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va_list ap;
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char c;
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int r;
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va_start (ap, two);
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#if __GNUC__ && __x86_64__ && !SYSTEM_LIBC
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#define __FUNCTION_ARGS 2
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ap += (__FOO_VARARGS + (__FUNCTION_ARGS << 1)) << 3;
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#undef __FUNCTION_ARGS
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#endif
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c = va_arg (ap, int);
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r = c;
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eputs ("c:");
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eputs (itoa (c));
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eputs ("\n");
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va_end (ap);
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return r;
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}
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int
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//stdarg3 (long one, long two, long three, ...)
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stdarg3 (long *one, long *two, long *three, ...)
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{
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va_list ap;
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char c;
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int r;
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va_start (ap, three);
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#if __GNUC__ && __x86_64__ && !SYSTEM_LIBC
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#define __FUNCTION_ARGS 3
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ap += (__FOO_VARARGS + (__FUNCTION_ARGS << 1)) << 3;
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#undef __FUNCTION_ARGS
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#endif
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c = va_arg (ap, int);
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r = c;
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eputs ("c:");
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eputs (itoa (c));
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eputs ("\n");
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va_end (ap);
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return r;
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}
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int
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main ()
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{
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char c = 'm';
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char buf[20];
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if (stdarg1 (-1, c) != c)
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return 1;
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c = 'w';
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if (stdarg2 (-1, -2, c) != c)
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return 2;
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c = 'g';
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if (stdarg3 (-1, -2, -3, c) != c)
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return 3;
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return 0;
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}
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