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/* __libc_siglongjmp for x86.
Copyright (C) 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/>. */
#define __libc_longjmp __redirect___libc_longjmp
#include <setjmp/longjmp.c>
#undef __libc_longjmp
extern void __longjmp_cancel (__jmp_buf __env, int __val)
__attribute__ ((__noreturn__)) attribute_hidden;
/* Since __libc_longjmp is a private interface for cancellation
implementation in libpthread, there is no need to restore shadow
stack register. */
void
__libc_longjmp (sigjmp_buf env, int val)
{
/* Perform any cleanups needed by the frames being unwound. */
_longjmp_unwind (env, val);
if (env[0].__mask_was_saved)
/* Restore the saved signal mask. */
(void) __sigprocmask (SIG_SETMASK,
(sigset_t *) &env[0].__saved_mask,
(sigset_t *) NULL);
/* Call the machine-dependent function to restore machine state
without shadow stack. */
__longjmp_cancel (env[0].__jmpbuf, val ?: 1);
}
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