| /* 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 */ |