/* Copyright (C) 1991-2018 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)