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/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stddef.h>
#include <setjmp.h>
#include <signal.h>
#include <pthreadP.h>
#include <jmpbuf-unwind.h>
extern void __sigstack_longjmp (__jmp_buf, int)
__attribute__ ((noreturn));
/* Like __libc_siglongjmp(), but safe for crossing from alternate
signal stack to normal stack. Needed by NPTL. */
void
__libc_unwind_longjmp (sigjmp_buf env, int val)
{
/* Perform any cleanups needed by the frames being unwound. */
__pthread_cleanup_upto (env->__jmpbuf, CURRENT_STACK_FRAME);
if (env[0].__mask_was_saved)
/* Restore the saved signal mask. */
(void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
(sigset_t *) NULL);
/* Call the machine-dependent function to restore machine state. */
__sigstack_longjmp (env[0].__jmpbuf, val ?: 1);
}
hidden_def (__libc_unwind_longjmp)
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