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/* Internal header file for <setjmp.h>. Linux/x86 version.
Copyright (C) 2017-2018 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/>. */
#ifndef _SETJMPP_H
#define _SETJMPP_H 1
#include <bits/types/__sigset_t.h>
/* The biggest signal number + 1. As of kernel 4.14, x86 _NSIG is 64.
Define it to 513 to leave some rooms for future use. */
#define _JUMP_BUF_SIGSET_NSIG 513
/* Number of longs to hold all signals. */
#define _JUMP_BUF_SIGSET_NWORDS \
((_JUMP_BUF_SIGSET_NSIG - 1 + 7) / (8 * sizeof (unsigned long int)))
typedef struct
{
unsigned long int __val[_JUMP_BUF_SIGSET_NWORDS];
} __jmp_buf_sigset_t;
typedef union
{
__sigset_t __saved_mask_compat;
struct
{
__jmp_buf_sigset_t __saved_mask;
/* Used for shadow stack pointer. */
unsigned long int __shadow_stack_pointer;
} __saved;
} __jmpbuf_arch_t;
#undef __sigset_t
#define __sigset_t __jmpbuf_arch_t
#include <setjmp.h>
#undef __saved_mask
#define __saved_mask __saved_mask.__saved.__saved_mask
#include <signal.h>
#define _SIGPROCMASK_NSIG_WORDS (_NSIG / (8 * sizeof (unsigned long int)))
typedef struct
{
unsigned long int __val[_SIGPROCMASK_NSIG_WORDS];
} __sigprocmask_sigset_t;
extern jmp_buf ___buf;
extern __typeof (___buf[0].__saved_mask) ___saved_mask;
_Static_assert (sizeof (___saved_mask) >= sizeof (__sigprocmask_sigset_t),
"size of ___saved_mask < size of __sigprocmask_sigset_t");
#endif /* setjmpP.h */
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