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28d41a99 MS |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright 2008-2020 Free Software Foundation, Inc. |
28d41a99 MS |
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 | } |