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/* __libc_siglongjmp for Linux/x86
Copyright (C) 2018-2022 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
<https://www.gnu.org/licenses/>. */
#include <sysdeps/x86/longjmp.c>
#include <pthreadP.h>
#include <jmp_buf-ssp.h>
#ifdef __x86_64__
# define SHADOW_STACK_POINTER_SIZE 8
#else
# define SHADOW_STACK_POINTER_SIZE 4
#endif
/* Assert that the priv field in struct pthread_unwind_buf has space
to store shadow stack pointer. */
_Static_assert ((offsetof (struct pthread_unwind_buf, priv)
<= SHADOW_STACK_POINTER_OFFSET)
&& ((offsetof (struct pthread_unwind_buf, priv)
+ sizeof (((struct pthread_unwind_buf *) 0)->priv))
>= (SHADOW_STACK_POINTER_OFFSET
+ SHADOW_STACK_POINTER_SIZE)),
"Shadow stack pointer is not within private storage "
"of pthread_unwind_buf.");
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