| /* |
| Copyright 2009-2016 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| /* Compile with "gcc -nostdlib dw2-restore.S" */ |
| |
| .text |
| .globl _start |
| .func _start |
| _start: call foo |
| mov $0,%rax |
| ret |
| .endfunc |
| |
| .func foo |
| foo: .cfi_startproc |
| push %rbp |
| .cfi_adjust_cfa_offset 8 |
| mov %rsp,%rbp |
| .cfi_def_cfa_register %rbp |
| |
| .cfi_remember_state |
| jmp 2f |
| |
| 1: mov %rbp,%rsp |
| .cfi_restore %rbp |
| pop %rbp |
| .cfi_adjust_cfa_offset -8 |
| .cfi_def_cfa_register %rsp |
| ret |
| |
| .cfi_restore_state |
| 2: movq $0,%rax |
| movq $0,(%rax) /* crash here */ |
| jmp 1b |
| .cfi_endproc |
| .endfunc |