1# Copyright 1997-2019 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15 16if [target_info exists gdb,nosignals] { 17 verbose "Skipping signals.exp because of nosignals." 18 continue 19} 20 21 22standard_testfile .c 23 24if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { 25 untested "failed to compile" 26 return -1 27} 28 29# Create and source the file that provides information about the compiler 30# used to compile the test case. 31if [get_compiler_info] { 32 return -1 33} 34 35gdb_exit 36gdb_start 37 38# This will need to be updated as the exact list of signals changes, 39# but I want to test that GDB_SIGNAL_0, GDB_SIGNAL_DEFAULT, and 40# GDB_SIGNAL_UNKNOWN are skipped. 41 42proc test_handle_all_print {} { 43 global timeout 44 # Increase timeout and expect input buffer for large output from gdb. 45 # Allow blank or TAB as whitespace characters. 46 set oldtimeout $timeout 47 set timeout [expr "$timeout + 60"] 48 verbose "Timeout is now $timeout seconds" 2 49 if { ![istarget "*-*-linux*"] 50 && ( [istarget "*-*-gnu*"] 51 || [istarget "*-*-mach*"] ) } { 52 gdb_test_sequence "handle all print" "" \ 53 { 54 "Signal\[ \]+Stop\[ \]+Print\[ \]+Pass to program\[ \]+Description\r\nSIGHUP\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Hangup" 55 "SIG63\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Real-time event 63" 56 "EXC_BREAKPOINT\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Breakpoint" 57 } 58 } else { 59 gdb_test_sequence "handle all print" "" \ 60 { 61 "Signal\[ \]+Stop\[ \]+Print\[ \]+Pass to program\[ \]+Description\r\nSIGHUP\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Hangup" 62 "SIG63\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Real-time event 63" 63 } 64 } 65 set timeout $oldtimeout 66 verbose "Timeout restored to $timeout seconds" 2 67} 68test_handle_all_print 69 70clean_restart $binfile 71 72if [runto_main] then { 73 74 # Since count is a static variable outside main, runto_main is no 75 # guarantee that count will be 0 at this point. 76 77 gdb_test_no_output "set variable count = 0" 78 79 # Test an inferior function call that takes a signal that hits a 80 # breakpoint (with a false condition). When GDB tries to run the 81 # stack dummy, it will hit the breakpoint at handler. Provided it 82 # doesn't lose its cool, this is not a problem, it just has to 83 # note that the breakpoint condition is false and keep going. 84 85 # ...setup an always false conditional breakpoint 86 87 gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*" 88 gdb_test_no_output "set \$handler_breakpoint_number = \$bpnum" 89 90 # ...setup the signal 91 92 gdb_test "next" "signal \\(SIGUSR1.*" "next to signal" 93 gdb_test "next" "alarm \\(.*" "next to alarm #1" 94 gdb_test "next" "\\+\\+count; /\\* first \\*/" \ 95 "next to ++count #1" 96 sleep 2 97 98 # ...call the function 99 100 gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = void" \ 101 "p func1 () #1" 102 103 # ...veryfiy that the cout was updated 104 105 gdb_test "p count" "= 2" "p count #1" 106 107 # Now run the same test but with a breakpoint that does stop. 108 109 # ...set up the breakpoint and signal 110 111 gdb_test "condition \$handler_breakpoint_number" "now unconditional\\." 112 gdb_test "next" "alarm \\(.*" "next to alarm #2" 113 gdb_test "next" "\\+\\+count; /\\* second \\*/" \ 114 "next to ++count #2" 115 sleep 2 116 117 # ...call the function, which is immediatly interrupted 118 119 gdb_test "p func1 ()" \ 120"Breakpoint \[0-9\]*, handler.* 121The program being debugged stopped while in a function called from GDB.*" \ 122 "p func1 () #2" 123 124 # ...verify the backtrace 125 126 gdb_test "backtrace" \ 127 "#0 handler.*#1 .signal handler called.*#2 func1.*#3 .function called from gdb.*#4.*main.*" \ 128 "backtrace from handler when calling func1" 129 130 # ...and continue (silently returning) 131 132 gdb_test "continue" "Continuing\\." 133 134 # ...and then count should have been incremented 135 136 gdb_test "p count" "= 5" "p count #2" 137 138 139 # Verify that "info signals" produces reasonable output. 140 141 gdb_test "info signals" "SIGHUP.*SIGINT.*SIGQUIT.*SIGILL.*SIGTRAP.*SIGABRT.*SIGEMT.*SIGFPE.*SIGKILL.*SIGBUS.*SIGSEGV.*SIGSYS.*SIGPIPE.*SIGALRM.*SIGTERM.*SIGURG.*SIGSTOP.*SIGTSTP.*SIGCONT.*SIGCHLD.*SIGTTIN.*SIGTTOU.*SIGIO.*SIGXCPU.*SIGXFSZ.*SIGVTALRM.*SIGPROF.*SIGWINCH.*SIGLOST.*SIGUSR1.*SIGUSR2.*SIGPWR.*SIGPOLL.*SIGWIND.*SIGPHONE.*SIGWAITING.*SIGLWP.*SIGDANGER.*SIGGRANT.*SIGRETRACT.*SIGMSG.*SIGSOUND.*SIGSAK.*SIGPRIO.*SIG33.*SIG34.*SIG35.*SIG36.*SIG37.*SIG38.*SIG39.*SIG40.*SIG41.*SIG42.*SIG43.*SIG44.*SIG45.*SIG46.*SIG47.*SIG48.*SIG49.*SIG50.*SIG51.*SIG52.*SIG53.*SIG54.*SIG55.*SIG56.*SIG57.*SIG58.*SIG59.*SIG60.*SIG61.*SIG62.*SIG63.*Use the \"handle\" command to change these tables.*" \ 142 "info signals" 143 144 # Verify that "info signal" correctly handles an argument, be it a 145 # symbolic signal name, or an integer ID. 146 147 gdb_test "info signal SIGTRAP" \ 148 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \ 149 "info signal SIGTRAP" 150 151 gdb_test "info signal 5" \ 152 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \ 153 "info signal 5" 154 155 # Verify that "handle" with illegal arguments is gracefully, um, 156 # handled. 157 158 gdb_test "handle" \ 159 "Argument required .signal to handle.*" \ 160 "handle without arguments" 161 162 gdb_test "handle SIGFOO" \ 163 "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \ 164 "handle with bogus SIG" 165 166 gdb_test "handle SIGHUP frump" \ 167 "Unrecognized or ambiguous flag word: \"frump\".*" \ 168 "handle SIG with bogus action" 169 170 # Verify that "handle" can take multiple actions per SIG, and that 171 # in the case of conflicting actions, that the rightmost action 172 # "wins". 173 174 gdb_test "handle SIGHUP print noprint" \ 175 "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \ 176 "handle SIG with multiple conflicting actions" 177 178 # Exercise all the various actions. (We don't care what the 179 # outcome is, this is just to ensure that they all can be parsed.) 180 181 gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \ 182 "Signal.*" \ 183 "handle SIG parses all legal actions" 184 185 # Verify that we can "handle" multiple signals at once, 186 # interspersed with actions. 187 188 gdb_test "handle SIG63 print SIGILL" \ 189 "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \ 190 "handle multiple SIGs" 191 192 # Verify that "handle" can take a numeric argument for the signal 193 # ID, rather than a symbolic name. (This may not be portable; 194 # works for HP-UX.) 195 196 # Also note that this testpoint overrides SIGTRAP, which on HP-UX 197 # at least, is used to implement single-steps and breakpoints. 198 # Don't expect to run the inferior after this! 199 200 set test "override SIGTRAP" 201 gdb_test_multiple "handle 5 nopass" "$test" { 202 -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" { 203 gdb_test "y" \ 204 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \ 205 "$test" 206 } 207 } 208 209 # GDB doesn't seem to allow numeric signal IDs larger than 15. Verify 210 # that restriction. ??rehrauer: Not sure if this is a feature or a 211 # bug, actually. Why is the range 1-15? 212 213 gdb_test "handle 58" \ 214 "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \ 215 "invalid signal number rejected" 216 217 # Verify that we can accept a signal ID range (number-number). 218 # ??rehrauer: This feature isn't documented on the quick-reference 219 # card. 220 221 gdb_test "handle 13-15" \ 222 "SIGPIPE.*SIGALRM.*SIGTERM.*" \ 223 "handle multiple SIGs via integer range" 224 225 # Bizarrely enough, GDB also allows you to reverse the range stat, 226 # stop IDs. E.g., "3-1" and "1-3" mean the same thing. Probably 227 # this isn't documented, but the code anticipates it, so we'd best 228 # test it... 229 230 gdb_test "handle 15-13" \ 231 "SIGPIPE.*SIGALRM.*SIGTERM.*" \ 232 "handle multiple SIGs via reverse integer range" 233 234 # SIGINT is used by the debugger as well. Verify that we can 235 # change our minds about changing it. 236 237 set test "override SIGINT" 238 gdb_test_multiple "handle SIGINT nopass" "$test" { 239 -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" { 240 gdb_test_multiple "n" "$test" { 241 -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $" { 242 # "Signal ..." should not be in the output. 243 fail gdb/8812 "$test" 244 } 245 -re "Not confirmed, unchanged.*$gdb_prompt $" { 246 pass "$test" 247 } 248 } 249 } 250 } 251 252 # Verify that GDB responds gracefully to the "signal" command with 253 # a missing argument. 254 255 gdb_test "signal" \ 256 "Argument required .signal number..*" \ 257 "signal without arguments disallowed" 258 259 # Verify that we can successfully send a signal other than 0 to 260 # the inferior. (This probably causes the inferior to run away. 261 # Be prepared to rerun to main for further testing.) 262 263 gdb_test "signal SIGUSR1" "Breakpoint.*handler.*" 264 gdb_test "bt" \ 265 "#0 handler .*#1 .signal handler called.*\#2 .*main.*" \ 266 "backtrace for SIGUSR1" 267} 268 269return 0 270