1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | /* Copyright (C) 2014-2020 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <string.h> #ifdef SIGNALS #include <signal.h> #include <unistd.h> #endif /* NOP instruction: must have the same size as the breakpoint instruction. */ #if defined(__s390__) || defined(__s390x__) #define NOP asm("nopr 0") #elif defined(__or1k__) #define NOP asm("l.nop") #else #define NOP asm("nop") #endif /* Buffer holding the breakpoint instruction. */ unsigned char buffer[16]; volatile unsigned char *addr_bp; volatile unsigned char *addr_after_bp; int counter = 0; void test (void) { NOP; NOP; NOP; NOP; /* write permanent bp here */ NOP; /* after permanent bp */ NOP; NOP; NOP; NOP; NOP; counter++; } void setup (void) { memcpy (buffer, (void *) addr_bp, addr_after_bp - addr_bp); } void test_basics (void) { test (); /* for SIGTRAP */ test (); /* for breakpoint once */ test (); /* for breakpoint twice */ test (); /* for disabled bp SIGTRAP */ test (); /* for breakpoint thrice */ } void test_next (void) { test (); /* for next */ counter = 0; /* after next */ } #ifdef SIGNALS static void test_signal_handler (int sig) { } void test_signal_with_handler (void) { signal (SIGUSR1, test_signal_handler); test (); } void test_signal_no_handler (void) { signal (SIGUSR1, SIG_IGN); test (); } static void test_signal_nested_handler () { test (); } void test_signal_nested_done (void) { } void test_signal_nested (void) { counter = 0; signal (SIGALRM, test_signal_nested_handler); alarm (1); test (); test_signal_nested_done (); } #endif int main (void) { setup (); test_basics (); test_next (); #ifdef SIGNALS test_signal_nested (); test_signal_with_handler (); test_signal_no_handler (); #endif return 0; } |