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44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
/* Copyright (C) 1991-2017 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stddef.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <pthreadP.h>
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#include <jmpbuf-unwind.h>
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extern void __sigstack_longjmp (__jmp_buf, int)
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__attribute__ ((noreturn));
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/* Like __libc_siglongjmp(), but safe for crossing from alternate
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signal stack to normal stack. Needed by NPTL. */
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void
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__libc_unwind_longjmp (sigjmp_buf env, int val)
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{
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/* Perform any cleanups needed by the frames being unwound. */
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__pthread_cleanup_upto (env->__jmpbuf, CURRENT_STACK_FRAME);
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if (env[0].__mask_was_saved)
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/* Restore the saved signal mask. */
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(void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
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(sigset_t *) NULL);
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/* Call the machine-dependent function to restore machine state. */
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__sigstack_longjmp (env[0].__jmpbuf, val ?: 1);
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}
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hidden_def (__libc_unwind_longjmp)
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