| 1 | /* This testcase is part of GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright 2008-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | /* |
| 19 | * Test restoration of machine state |
| 20 | */ |
| 21 | |
| 22 | extern void hide (int); |
| 23 | |
| 24 | /* Test register variable |
| 25 | Requires -- compiler honors 'register'. */ |
| 26 | |
| 27 | void |
| 28 | register_state (void) |
| 29 | { |
| 30 | register int a = 0; |
| 31 | |
| 32 | hide (a); /* External function to defeat optimization. */ |
| 33 | a++; /* register_state: set breakpoint here */ |
| 34 | hide (a); /* register post-change */ |
| 35 | } |
| 36 | |
| 37 | /* Test auto variable (whatever that means). */ |
| 38 | |
| 39 | void |
| 40 | auto_state (void) |
| 41 | { |
| 42 | auto int a = 0; |
| 43 | |
| 44 | hide (a); /* External function to defeat optimization. */ |
| 45 | a++; /* auto_state: set breakpoint here */ |
| 46 | hide (a); /* auto post-change */ |
| 47 | } |
| 48 | |
| 49 | /* Test function-static variable. */ |
| 50 | |
| 51 | void |
| 52 | function_static_state (void) |
| 53 | { |
| 54 | static int a = 0; |
| 55 | |
| 56 | hide (a); /* External function to defeat optimization. */ |
| 57 | a++; /* function_static_state: set breakpoint here */ |
| 58 | hide (a); /* function static post-change */ |
| 59 | } |
| 60 | |
| 61 | /* Test module-static variable. */ |
| 62 | |
| 63 | static int astatic; |
| 64 | |
| 65 | void |
| 66 | module_static_state (void) |
| 67 | { |
| 68 | astatic = 0; |
| 69 | |
| 70 | hide (astatic); /* External function to defeat optimization. */ |
| 71 | astatic++; /* module_static_state: set breakpoint here */ |
| 72 | hide (astatic); /* module static post-change */ |
| 73 | } |
| 74 | |
| 75 | /* Test module-global variable. */ |
| 76 | |
| 77 | int aglobal; |
| 78 | |
| 79 | void |
| 80 | module_global_state (void) |
| 81 | { |
| 82 | aglobal = 0; |
| 83 | |
| 84 | hide (aglobal); /* External function to defeat optimization. */ |
| 85 | aglobal++; /* module_global_state: set breakpoint here */ |
| 86 | hide (aglobal); /* module global post-change */ |
| 87 | } |
| 88 | |
| 89 | /* main test driver */ |
| 90 | |
| 91 | int |
| 92 | main (int argc, char **argv) |
| 93 | { |
| 94 | register_state (); /* begin main */ |
| 95 | auto_state (); |
| 96 | function_static_state (); |
| 97 | module_static_state (); |
| 98 | module_global_state (); |
| 99 | |
| 100 | return 0; /* end main */ |
| 101 | } |