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618f726f | 1 | /* Copyright (C) 2014-2016 Free Software Foundation, Inc. |
af48d08f PA |
2 | |
3 | This file is part of GDB. | |
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 | #include <string.h> | |
19 | #ifdef SIGNALS | |
20 | #include <signal.h> | |
a267f3ad | 21 | #include <unistd.h> |
af48d08f PA |
22 | #endif |
23 | ||
0d7b2549 AA |
24 | /* NOP instruction: must have the same size as the breakpoint |
25 | instruction. */ | |
26 | ||
27 | #if defined(__s390__) || defined(__s390x__) | |
28 | #define NOP asm("nopr 0") | |
29 | #else | |
af48d08f | 30 | #define NOP asm("nop") |
0d7b2549 | 31 | #endif |
af48d08f PA |
32 | |
33 | /* Buffer holding the breakpoint instruction. */ | |
34 | unsigned char buffer[16]; | |
35 | ||
36 | volatile unsigned char *addr_bp; | |
37 | volatile unsigned char *addr_after_bp; | |
38 | int counter = 0; | |
39 | ||
40 | void | |
41 | test (void) | |
42 | { | |
43 | NOP; | |
44 | NOP; | |
45 | NOP; | |
46 | NOP; /* write permanent bp here */ | |
47 | NOP; /* after permanent bp */ | |
48 | NOP; | |
49 | NOP; | |
50 | NOP; | |
51 | NOP; | |
52 | NOP; | |
53 | ||
54 | counter++; | |
55 | } | |
56 | ||
57 | void | |
58 | setup (void) | |
59 | { | |
60 | memcpy (buffer, (void *) addr_bp, addr_after_bp - addr_bp); | |
61 | } | |
62 | ||
63 | void | |
64 | test_basics (void) | |
65 | { | |
66 | test (); /* for SIGTRAP */ | |
67 | test (); /* for breakpoint once */ | |
68 | test (); /* for breakpoint twice */ | |
69 | test (); /* for disabled bp SIGTRAP */ | |
70 | test (); /* for breakpoint thrice */ | |
71 | } | |
72 | ||
73 | void | |
74 | test_next (void) | |
75 | { | |
76 | test (); /* for next */ | |
77 | counter = 0; /* after next */ | |
78 | } | |
79 | ||
80 | #ifdef SIGNALS | |
81 | ||
82 | static void | |
83 | test_signal_handler (int sig) | |
84 | { | |
85 | } | |
86 | ||
87 | void | |
88 | test_signal_with_handler (void) | |
89 | { | |
90 | signal (SIGUSR1, test_signal_handler); | |
91 | test (); | |
92 | } | |
93 | ||
94 | void | |
95 | test_signal_no_handler (void) | |
96 | { | |
97 | signal (SIGUSR1, SIG_IGN); | |
98 | test (); | |
99 | } | |
100 | ||
101 | static void | |
102 | test_signal_nested_handler () | |
103 | { | |
104 | test (); | |
105 | } | |
106 | ||
107 | void | |
108 | test_signal_nested_done (void) | |
109 | { | |
110 | } | |
111 | ||
112 | void | |
113 | test_signal_nested (void) | |
114 | { | |
115 | counter = 0; | |
116 | signal (SIGALRM, test_signal_nested_handler); | |
117 | alarm (1); | |
118 | test (); | |
119 | test_signal_nested_done (); | |
120 | } | |
121 | ||
122 | #endif | |
123 | ||
124 | int | |
125 | main (void) | |
126 | { | |
127 | setup (); | |
128 | test_basics (); | |
129 | test_next (); | |
130 | #ifdef SIGNALS | |
131 | test_signal_nested (); | |
132 | test_signal_with_handler (); | |
133 | test_signal_no_handler (); | |
134 | #endif | |
135 | return 0; | |
136 | } |