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93d42b30 DJ |
1 | /* Unwinder test program for signal frames. |
2 | ||
b811d2c2 | 3 | Copyright 2007-2020 Free Software Foundation, Inc. |
93d42b30 DJ |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
93d42b30 | 10 | (at your option) any later version. |
a9762ec7 | 11 | |
93d42b30 DJ |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
a9762ec7 | 16 | |
93d42b30 | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
93d42b30 DJ |
19 | |
20 | void sigframe (void); | |
21 | void setup (void); | |
22 | ||
23 | void | |
24 | func (void) | |
25 | { | |
26 | } | |
27 | ||
28 | int | |
29 | main (void) | |
30 | { | |
31 | setup (); | |
32 | } | |
33 | ||
34 | /* Create an imitation signal frame. This will work on any x86 or | |
35 | x86-64 target which uses a version of GAS recent enough for | |
36 | .cfi_signal_frame (added 2006-02-27 and included in binutils 2.17). | |
37 | The default CIE created by gas suffices to unwind from an empty | |
38 | function. */ | |
39 | ||
6e0a4f15 MS |
40 | /* Note: to make sure that the Dwarf unwinder gets to handle |
41 | the frame, we add an extra 'nop' after the label. Otherwise, | |
42 | the epilogue unwinder will see the 'ret' and grab the frame. */ | |
43 | ||
93d42b30 DJ |
44 | asm(".text\n" |
45 | " .align 8\n" | |
46 | " .globl setup\n" | |
47 | "setup:\n" | |
48 | " push $sigframe\n" | |
49 | " jmp func\n" | |
50 | "\n" | |
51 | " .cfi_startproc\n" | |
52 | " .cfi_signal_frame\n" | |
53 | " nop\n" | |
54 | " .globl sigframe\n" | |
55 | "sigframe:\n" | |
6e0a4f15 | 56 | " nop\n" |
93d42b30 DJ |
57 | " ret\n" |
58 | " .cfi_endproc"); |