| /* Unwinder test program for signal frames. |
| |
| Copyright 2007-2021 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| 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/>. */ |
| |
| void sigframe (void); |
| void setup (void); |
| |
| void |
| func (void) |
| { |
| } |
| |
| int |
| main (void) |
| { |
| setup (); |
| } |
| |
| /* Create an imitation signal frame. This will work on any x86 or |
| x86-64 target which uses a version of GAS recent enough for |
| .cfi_signal_frame (added 2006-02-27 and included in binutils 2.17). |
| The default CIE created by gas suffices to unwind from an empty |
| function. */ |
| |
| /* Note: to make sure that the Dwarf unwinder gets to handle |
| the frame, we add an extra 'nop' after the label. Otherwise, |
| the epilogue unwinder will see the 'ret' and grab the frame. */ |
| |
| asm(".text\n" |
| " .align 8\n" |
| " .globl setup\n" |
| "setup:\n" |
| " push $sigframe\n" |
| " jmp func\n" |
| "\n" |
| " .cfi_startproc\n" |
| " .cfi_signal_frame\n" |
| " nop\n" |
| " .globl sigframe\n" |
| "sigframe:\n" |
| " nop\n" |
| " ret\n" |
| " .cfi_endproc"); |