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2fd481e1 | 1 | /* |
ecd75fc8 | 2 | Copyright 2009-2014 Free Software Foundation, Inc. |
2fd481e1 PP |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
47d48711 | 15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
2fd481e1 PP |
16 | |
17 | /* Compile with "gcc -nostdlib dw2-restore.S" */ | |
18 | ||
19 | .text | |
20 | .globl _start | |
21 | .func _start | |
22 | _start: call foo | |
23 | mov $0,%rax | |
24 | ret | |
25 | .endfunc | |
26 | ||
27 | .func foo | |
28 | foo: .cfi_startproc | |
29 | push %rbp | |
30 | .cfi_adjust_cfa_offset 8 | |
31 | mov %rsp,%rbp | |
32 | .cfi_def_cfa_register %rbp | |
33 | ||
34 | .cfi_remember_state | |
35 | jmp 2f | |
36 | ||
37 | 1: mov %rbp,%rsp | |
38 | .cfi_restore %rbp | |
39 | pop %rbp | |
40 | .cfi_adjust_cfa_offset -8 | |
41 | .cfi_def_cfa_register %rsp | |
42 | ret | |
43 | ||
44 | .cfi_restore_state | |
45 | 2: movq $0,%rax | |
46 | movq $0,(%rax) /* crash here */ | |
47 | jmp 1b | |
48 | .cfi_endproc | |
49 | .endfunc |