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42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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 not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <sysdep.h>
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#include <setjmp.h>
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#include <bits/setjmp.h>
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#include <stdlib.h>
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#include <unistd.h>
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/* Jump to the position specified by ENV, causing the
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setjmp call there to return VAL, or 1 if VAL is 0. */
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void
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__longjmp (__jmp_buf env, int val)
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{
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/* Restore registers and jump back. */
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asm volatile ("lr %%r2,%0\n\t" /* PUT val in grp 2. */
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"lm %%r6,%%r15,%1\n\t"
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"br %%r14"
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: : "r" (val == 0 ? 1 : val),
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"m" (env->gregs[__JB_GPR6]) : "2" );
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/* Avoid `volatile function does return' warnings. */
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for (;;);
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}
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