1# Copyright 1997-2015 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 signals.exp 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 35if {$hp_cc_compiler} { 36 set void 0 37} else { 38 set void void 39} 40 41gdb_exit 42gdb_start 43 44# This will need to be updated as the exact list of signals changes, 45# but I want to test that GDB_SIGNAL_0, GDB_SIGNAL_DEFAULT, and 46# GDB_SIGNAL_UNKNOWN are skipped. 47 48proc test_handle_all_print {} { 49 global timeout 50 # Increase timeout and expect input buffer for large output from gdb. 51 # Allow blank or TAB as whitespace characters. 52 set oldtimeout $timeout 53 set timeout [expr "$timeout + 60"] 54 verbose "Timeout is now $timeout seconds" 2 55 if { ![istarget "*-*-linux*"] 56 && ( [istarget "*-*-gnu*"] 57 || [istarget "*-*-mach*"] ) } { 58 gdb_test_sequence "handle all print" "" \ 59 { 60 "Signal\[ \]+Stop\[ \]+Print\[ \]+Pass to program\[ \]+Description\r\nSIGHUP\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Hangup" 61 "SIG63\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Real-time event 63" 62 "EXC_BREAKPOINT\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Breakpoint" 63 } 64 } else { 65 gdb_test_sequence "handle all print" "" \ 66 { 67 "Signal\[ \]+Stop\[ \]+Print\[ \]+Pass to program\[ \]+Description\r\nSIGHUP\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Hangup" 68 "SIG63\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Real-time event 63" 69 } 70 } 71 set timeout $oldtimeout 72 verbose "Timeout restored to $timeout seconds" 2 73} 74test_handle_all_print 75 76clean_restart $binfile 77 78if [runto_main] then { 79 80 # Since count is a static variable outside main, runto_main is no 81 # guarantee that count will be 0 at this point. 82 83 gdb_test_no_output "set variable count = 0" 84 85 # Test an inferior function call that takes a signal that hits a 86 # breakpoint (with a false condition). When GDB tries to run the 87 # stack dummy, it will hit the breakpoint at handler. Provided it 88 # doesn't lose its cool, this is not a problem, it just has to 89 # note that the breakpoint condition is false and keep going. 90 91 # ...setup an always false conditional breakpoint 92 93 gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*" 94 gdb_test_no_output "set \$handler_breakpoint_number = \$bpnum" 95 96 # ...setup the signal 97 98 gdb_test "next" "signal \\(SIGUSR1.*" "next to signal" 99 gdb_test "next" "alarm \\(.*" "next to alarm #1" 100 gdb_test "next" "\\+\\+count; /\\* first \\*/" \ 101 "next to ++count #1" 102 sleep 2 103 104 # ...call the function 105 106 gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \ 107 "p func1 () #1" 108 109 # ...veryfiy that the cout was updated 110 111 gdb_test "p count" "= 2" "p count #1" 112 113 # Now run the same test but with a breakpoint that does stop. 114 115 # ...set up the breakpoint and signal 116 117 gdb_test "condition \$handler_breakpoint_number" "now unconditional\\." 118 gdb_test "next" "alarm \\(.*" "next to alarm #2" 119 gdb_test "next" "\\+\\+count; /\\* second \\*/" \ 120 "next to ++count #2" 121 sleep 2 122 123 # ...call the function, which is immediatly interrupted 124 125 gdb_test "p func1 ()" \ 126"Breakpoint \[0-9\]*, handler.* 127The program being debugged stopped while in a function called from GDB.*" \ 128 "p func1 () #2" 129 130 # ...verify the backtrace 131 132 gdb_test "backtrace" \ 133 "#0 handler.*#1 .signal handler called.*#2 func1.*#3 .function called from gdb.*#4.*main.*" \ 134 "backtrace from handler when calling func1" 135 136 # ...and continue (silently returning) 137 138 gdb_test "continue" "Continuing\\." 139 140 # ...and then count should have been incremented 141 142 gdb_test "p count" "= 5" "p count #2" 143 144 145 # Verify that "info signals" produces reasonable output. 146 147 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.*" \ 148 "info signals" 149 150 # Verify that "info signal" correctly handles an argument, be it a 151 # symbolic signal name, or an integer ID. 152 153 gdb_test "info signal SIGTRAP" \ 154 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \ 155 "info signal SIGTRAP" 156 157 gdb_test "info signal 5" \ 158 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \ 159 "info signal 5" 160 161 # Verify that "handle" with illegal arguments is gracefully, um, 162 # handled. 163 164 gdb_test "handle" \ 165 "Argument required .signal to handle.*" \ 166 "handle without arguments" 167 168 gdb_test "handle SIGFOO" \ 169 "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \ 170 "handle with bogus SIG" 171 172 gdb_test "handle SIGHUP frump" \ 173 "Unrecognized or ambiguous flag word: \"frump\".*" \ 174 "handle SIG with bogus action" 175 176 # Verify that "handle" can take multiple actions per SIG, and that 177 # in the case of conflicting actions, that the rightmost action 178 # "wins". 179 180 gdb_test "handle SIGHUP print noprint" \ 181 "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \ 182 "handle SIG with multiple conflicting actions" 183 184 # Exercise all the various actions. (We don't care what the 185 # outcome is, this is just to ensure that they all can be parsed.) 186 187 gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \ 188 "Signal.*" \ 189 "handle SIG parses all legal actions" 190 191 # Verify that we can "handle" multiple signals at once, 192 # interspersed with actions. 193 194 gdb_test "handle SIG63 print SIGILL" \ 195 "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \ 196 "handle multiple SIGs" 197 198 # Verify that "handle" can take a numeric argument for the signal 199 # ID, rather than a symbolic name. (This may not be portable; 200 # works for HP-UX.) 201 202 # Also note that this testpoint overrides SIGTRAP, which on HP-UX 203 # at least, is used to implement single-steps and breakpoints. 204 # Don't expect to run the inferior after this! 205 206 set test "override SIGTRAP" 207 gdb_test_multiple "handle 5 nopass" "$test" { 208 -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" { 209 gdb_test "y" \ 210 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \ 211 "$test" 212 } 213 } 214 215 # GDB doesn't seem to allow numeric signal IDs larger than 15. Verify 216 # that restriction. ??rehrauer: Not sure if this is a feature or a 217 # bug, actually. Why is the range 1-15? 218 219 gdb_test "handle 58" \ 220 "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \ 221 "invalid signal number rejected" 222 223 # Verify that we can accept a signal ID range (number-number). 224 # ??rehrauer: This feature isn't documented on the quick-reference 225 # card. 226 227 gdb_test "handle 13-15" \ 228 "SIGPIPE.*SIGALRM.*SIGTERM.*" \ 229 "handle multiple SIGs via integer range" 230 231 # Bizarrely enough, GDB also allows you to reverse the range stat, 232 # stop IDs. E.g., "3-1" and "1-3" mean the same thing. Probably 233 # this isn't documented, but the code anticipates it, so we'd best 234 # test it... 235 236 gdb_test "handle 15-13" \ 237 "SIGPIPE.*SIGALRM.*SIGTERM.*" \ 238 "handle multiple SIGs via reverse integer range" 239 240 # SIGINT is used by the debugger as well. Verify that we can 241 # change our minds about changing it. 242 243 set test "override SIGINT" 244 gdb_test_multiple "handle SIGINT nopass" "$test" { 245 -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" { 246 gdb_test_multiple "n" "$test" { 247 -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $" { 248 # "Signal ..." should not be in the output. 249 fail gdb/8812 "$test" 250 } 251 -re "Not confirmed, unchanged.*$gdb_prompt $" { 252 pass "$test" 253 } 254 } 255 } 256 } 257 258 # Verify that GDB responds gracefully to the "signal" command with 259 # a missing argument. 260 261 gdb_test "signal" \ 262 "Argument required .signal number..*" \ 263 "signal without arguments disallowed" 264 265 # Verify that we can successfully send a signal other than 0 to 266 # the inferior. (This probably causes the inferior to run away. 267 # Be prepared to rerun to main for further testing.) 268 269 gdb_test "signal SIGUSR1" "Breakpoint.*handler.*" 270 gdb_test "bt" \ 271 "#0 handler .*#1 .signal handler called.*\#2 .*main.*" \ 272 "backtrace for SIGUSR1" 273} 274 275return 0 276