gdb/testsuite/gdb.dwarf2/dw2-restore.S

   1 /*
   2    Copyright 2009-2013 Free Software Foundation, Inc.
   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
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /* Compile with "gcc -nostdlib dw2-restore.S" */
  19
  20         .text
  21         .globl _start
  22         .func   _start
  23 _start: call foo
  24         mov $0,%rax
  25         ret
  26         .endfunc
  27
  28         .func   foo
  29 foo:    .cfi_startproc
  30         push %rbp
  31         .cfi_adjust_cfa_offset 8
  32         mov %rsp,%rbp
  33         .cfi_def_cfa_register %rbp
  34
  35         .cfi_remember_state
  36         jmp 2f
  37
  38 1:      mov %rbp,%rsp
  39         .cfi_restore %rbp
  40         pop %rbp
  41         .cfi_adjust_cfa_offset -8
  42         .cfi_def_cfa_register %rsp
  43         ret
  44
  45         .cfi_restore_state
  46 2:      movq $0,%rax
  47         movq $0,(%rax)  /* crash here */
  48         jmp 1b
  49         .cfi_endproc
  50         .endfunc