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a43565ac | 1 | /* Test that the GET_PC macro is consistent with the unwinder. |
581c785b | 2 | Copyright (C) 2019-2022 Free Software Foundation, Inc. |
a43565ac AZ |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public License as | |
7 | published by the Free Software Foundation; either version 2.1 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If | |
5a82c748 | 17 | not, see <https://www.gnu.org/licenses/>. */ |
a43565ac AZ |
18 | |
19 | /* This test searches for the value of the GET_PC macro in the | |
20 | addresses obtained from the backtrace function. */ | |
21 | ||
22 | #include <array_length.h> | |
23 | #include <execinfo.h> | |
24 | #include <inttypes.h> | |
25 | #include <signal.h> | |
26 | #include <stdbool.h> | |
27 | #include <stdio.h> | |
28 | #include <support/check.h> | |
29 | #include <support/xsignal.h> | |
30 | #include <sigcontextinfo.h> | |
31 | ||
32 | static bool handler_called; | |
33 | ||
34 | static void | |
35 | handler (int signal, siginfo_t *info, void *ctx) | |
36 | { | |
37 | TEST_COMPARE (signal, SIGUSR1); | |
38 | ||
39 | uintptr_t pc = sigcontext_get_pc (ctx); | |
40 | printf ("info: address in signal handler: 0x%" PRIxPTR "\n", pc); | |
41 | ||
42 | void *callstack[10]; | |
43 | int callstack_count = backtrace (callstack, array_length (callstack)); | |
44 | TEST_VERIFY_EXIT (callstack_count > 0); | |
45 | TEST_VERIFY_EXIT (callstack_count <= array_length (callstack)); | |
46 | bool found = false; | |
47 | for (int i = 0; i < callstack_count; ++i) | |
48 | { | |
49 | const char *marker; | |
50 | if ((uintptr_t) callstack[i] == pc) | |
51 | { | |
52 | found = true; | |
53 | marker = " *"; | |
54 | } | |
55 | else | |
56 | marker = ""; | |
57 | printf ("info: call stack entry %d: 0x%" PRIxPTR "%s\n", | |
58 | i, (uintptr_t) callstack[i], marker); | |
59 | } | |
60 | TEST_VERIFY (found); | |
61 | handler_called = true; | |
62 | } | |
63 | ||
64 | static int | |
65 | do_test (void) | |
66 | { | |
67 | struct sigaction sa = | |
68 | { | |
69 | .sa_sigaction = &handler, | |
70 | .sa_flags = SA_SIGINFO | |
71 | }; | |
72 | xsigaction (SIGUSR1, &sa, NULL); | |
73 | raise (SIGUSR1); | |
74 | TEST_VERIFY (handler_called); | |
75 | return 0; | |
76 | } | |
77 | ||
78 | #include <support/test-driver.c> |