48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
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/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2017,2018,2019 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 <setjmp.h>
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#include <stdlib.h>
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void
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longjmp (jmp_buf env, int val)
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{
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val = val == 0 ? 1 : val;
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asm ("ld_____%fp,0x10(%fp)"); // env*
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asm ("ld_____%t0,0x8(%fp)"); // env.__pc
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asm ("ld_____%sp,0x10(%fp)"); // env.__sp
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asm ("ld_____%fp,0x0(%fp)"); // env.__bp
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asm ("jr_____%t0");
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// not reached
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exit (42);
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}
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int
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setjmp (__jmp_buf * env)
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{
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long *p = (long *) &env;
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env[0].__bp = p[-2];
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env[0].__pc = p[-1];
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env[0].__sp = (long) &env;
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return 0;
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}
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