blob: 63e3a279a4816f519d382b7cc88cd287d235b56c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/* Copyright (C) 2003-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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 <setjmp.h>
#include <stdint.h>
#include <unwind.h>
/* Test if longjmp to JMPBUF would unwind the frame containing a local
variable at ADDRESS. */
#define _JMPBUF_UNWINDS(_jmpbuf, _address, _demangle) \
((void *) (_address) < (void *) (((long int *) _jmpbuf)[0]))
#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
({ uintptr_t _cfa = (uintptr_t) _Unwind_GetCFA (_context) - (_adj); \
(_cfa < (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj) \
|| (_cfa == (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj) \
&& (uintptr_t) _Unwind_GetBSP (_context) - (_adj) \
>= (uintptr_t)(((long *)(_jmpbuf))[17]) - (_adj))); \
})
#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
((uintptr_t)(_address) - (_adj) < (uintptr_t)(((long *)_jmpbuf)[0]) - (_adj))
/* We use a longjmp() which can cross from the alternate signal-stack
to the normal stack. */
extern void __libc_unwind_longjmp (sigjmp_buf env, int val)
__attribute__ ((noreturn));
hidden_proto (__libc_unwind_longjmp)
|
