1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2008-2020 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
22extern void hide (int);
23
24/* Test register variable
25   Requires -- compiler honors 'register'.  */
26
27void
28register_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
39void
40auto_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
51void
52function_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
63static int astatic;
64
65void
66module_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
77int aglobal;
78
79void
80module_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
91int
92main (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}
102