gdb/testsuite/gdb.base/signals.exp

   1 # Copyright 1997, 1998, 1999, 2003, 2004, 2007, 2008, 2009, 2010, 2011
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 if [target_info exists gdb,nosignals] {
  18     verbose "Skipping signals.exp because of nosignals."
  19     continue
  20 }
  21
  22 if $tracelevel then {
  23         strace $tracelevel
  24 }
  25
  26
  27 set testfile signals
  28 set srcfile ${testfile}.c
  29 set binfile ${objdir}/${subdir}/${testfile}
  30 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  31     untested signals.exp
  32     return -1
  33 }
  34
  35 # Create and source the file that provides information about the compiler
  36 # used to compile the test case.
  37 if [get_compiler_info ${binfile}] {
  38     return -1;
  39 }
  40
  41 if {$hp_cc_compiler} {
  42     set void 0
  43 } else {
  44     set void void
  45 }
  46
  47 gdb_exit
  48 gdb_start
  49
  50 # This will need to be updated as the exact list of signals changes,
  51 # but I want to test that TARGET_SIGNAL_0, TARGET_SIGNAL_DEFAULT, and
  52 # TARGET_SIGNAL_UNKNOWN are skipped.
  53
  54 proc test_handle_all_print {} {
  55     global timeout
  56     # Increase timeout and expect input buffer for large output from gdb.
  57     # Allow blank or TAB as whitespace characters.
  58     set oldtimeout $timeout
  59     set timeout [expr "$timeout + 60"]
  60     verbose "Timeout is now $timeout seconds" 2
  61     if { ![istarget "*-*-linux*"]
  62          && ( [istarget "*-*-gnu*"]
  63               || [istarget "*-*-mach*"] ) } {
  64         gdb_test_sequence "handle all print" "" \
  65             {
  66                 "Signal\[       \]+Stop\[       \]+Print\[      \]+Pass to program\[    \]+Description\r\nSIGHUP\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Hangup"
  67                 "SIG63\[        \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Real-time event 63"
  68                 "EXC_BREAKPOINT\[       \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Breakpoint"
  69             }
  70     } else {
  71         gdb_test_sequence "handle all print" "" \
  72             {
  73                 "Signal\[       \]+Stop\[       \]+Print\[      \]+Pass to program\[    \]+Description\r\nSIGHUP\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Hangup"
  74                 "SIG63\[        \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Real-time event 63"
  75             }
  76     }
  77     set timeout $oldtimeout
  78     verbose "Timeout restored to $timeout seconds" 2
  79 }
  80 test_handle_all_print
  81
  82 gdb_exit
  83 gdb_start
  84 gdb_reinitialize_dir $srcdir/$subdir
  85 gdb_load $binfile
  86
  87 if [runto_main] then {
  88
  89     # Since count is a static variable outside main, runto_main is no
  90     # guarantee that count will be 0 at this point.
  91
  92     gdb_test_no_output "set variable count = 0"
  93
  94     # Test an inferior function call that takes a signal that hits a
  95     # breakpoint (with a false condition).  When GDB tries to run the
  96     # stack dummy, it will hit the breakpoint at handler.  Provided it
  97     # doesn't lose its cool, this is not a problem, it just has to
  98     # note that the breakpoint condition is false and keep going.
  99
 100     # ...setup an always false conditional breakpoint
 101
 102     gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*"
 103     gdb_test_no_output "set \$handler_breakpoint_number = \$bpnum"
 104
 105     # ...setup the signal
 106
 107     gdb_test "next" "signal \\(SIGUSR1.*" "next to signal"
 108     gdb_test "next" "alarm \\(.*" "next to alarm #1"
 109     gdb_test "next" "\\+\\+count; /\\* first \\*/" \
 110         "next to ++count #1"
 111     sleep 2
 112
 113     # ...call the function
 114
 115     gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \
 116         "p func1 () #1"
 117
 118     # ...veryfiy that the cout was updated
 119
 120     gdb_test "p count" "= 2" "p count #1"
 121
 122     # Now run the same test but with a breakpoint that does stop.
 123
 124     # ...set up the breakpoint and signal
 125
 126     gdb_test "condition \$handler_breakpoint_number" "now unconditional\\."
 127     gdb_test "next" "alarm \\(.*" "next to alarm #2"
 128     gdb_test "next" "\\+\\+count; /\\* second \\*/" \
 129         "next to ++count #2"
 130     sleep 2
 131
 132     # ...call the function, which is immediatly interrupted
 133
 134     gdb_test "p func1 ()" \
 135 "Breakpoint \[0-9\]*, handler.*
 136 The program being debugged stopped while in a function called from GDB.*" \
 137         "p func1 () #2"
 138
 139     # ...verify the backtrace
 140
 141     gdb_test "backtrace" \
 142         "#0  handler.*#1  .signal handler called.*#2  func1.*#3  .function called from gdb.*#4.*main.*" \
 143         "backtrace from handler when calling func1"
 144
 145     # ...and continue (silently returning)
 146
 147     gdb_test "continue" "Continuing\\."
 148
 149     # ...and then count should have been incremented
 150
 151     gdb_test "p count" "= 5" "p count #2"
 152
 153
 154     # Verify that "info signals" produces reasonable output.
 155
 156     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.*" \
 157         "info signals"
 158
 159     # Verify that "info signal" correctly handles an argument, be it a
 160     # symbolic signal name, or an integer ID.
 161
 162     gdb_test "info signal SIGTRAP" \
 163         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 164         "info signal SIGTRAP"
 165
 166     gdb_test "info signal 5" \
 167         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 168         "info signal 5"
 169
 170     # Verify that "handle" with illegal arguments is gracefully, um,
 171     # handled.
 172
 173     gdb_test "handle" \
 174         "Argument required .signal to handle.*" \
 175         "handle without arguments"
 176
 177     gdb_test "handle SIGFOO" \
 178         "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \
 179         "handle with bogus SIG"
 180
 181     gdb_test "handle SIGHUP frump" \
 182         "Unrecognized or ambiguous flag word: \"frump\".*" \
 183         "handle SIG with bogus action"
 184
 185     # Verify that "handle" can take multiple actions per SIG, and that
 186     # in the case of conflicting actions, that the rightmost action
 187     # "wins".
 188
 189     gdb_test "handle SIGHUP print noprint" \
 190         "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \
 191         "handle SIG with multiple conflicting actions"
 192
 193     # Exercise all the various actions.  (We don't care what the
 194     # outcome is, this is just to ensure that they all can be parsed.)
 195
 196     gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \
 197         "Signal.*" \
 198         "handle SIG parses all legal actions"
 199
 200     # Verify that we can "handle" multiple signals at once,
 201     # interspersed with actions.
 202
 203     gdb_test "handle SIG63 print SIGILL" \
 204         "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \
 205         "handle multiple SIGs"
 206
 207     # Verify that "handle" can take a numeric argument for the signal
 208     # ID, rather than a symbolic name.  (This may not be portable;
 209     # works for HP-UX.)
 210
 211     # Also note that this testpoint overrides SIGTRAP, which on HP-UX
 212     # at least, is used to implement single-steps and breakpoints.
 213     # Don't expect to run the inferior after this!
 214
 215     set test "override SIGTRAP"
 216     gdb_test_multiple "handle 5 nopass" "$test" {
 217         -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 218             gdb_test "y" \
 219                 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 220                 "$test"
 221         }
 222     }
 223
 224     # GDB doesn't seem to allow numeric signal IDs larger than 15.  Verify
 225     # that restriction.  ??rehrauer: Not sure if this is a feature or a
 226     # bug, actually.  Why is the range 1-15?
 227
 228     gdb_test "handle 58" \
 229         "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \
 230         "invalid signal number rejected"
 231
 232     # Verify that we can accept a signal ID range (number-number).
 233     # ??rehrauer: This feature isn't documented on the quick-reference
 234     # card.
 235
 236     gdb_test "handle 13-15" \
 237         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 238         "handle multiple SIGs via integer range"
 239
 240     # Bizarrely enough, GDB also allows you to reverse the range stat,
 241     # stop IDs.  E.g., "3-1" and "1-3" mean the same thing.  Probably
 242     # this isn't documented, but the code anticipates it, so we'd best
 243     # test it...
 244
 245     gdb_test "handle 15-13" \
 246         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 247         "handle multiple SIGs via reverse integer range"
 248
 249     # SIGINT is used by the debugger as well.  Verify that we can
 250     # change our minds about changing it.
 251
 252     set test "override SIGINT"
 253     gdb_test_multiple "handle SIGINT nopass" "$test" {
 254         -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 255             gdb_test_multiple "n" "$test" {
 256                 -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $"  {
 257                     # "Signal ..." should not be in the output.
 258                     fail gdb/8812 "$test"
 259                 }
 260                 -re "Not confirmed, unchanged.*$gdb_prompt $" {
 261                     pass "$test"
 262                 }
 263             }
 264         }
 265     }
 266
 267     # Verify that GDB responds gracefully to the "signal" command with
 268     # a missing argument.
 269
 270     gdb_test "signal" \
 271         "Argument required .signal number..*" \
 272         "signal without arguments disallowed"
 273
 274     # Verify that we can successfully send a signal other than 0 to
 275     # the inferior.  (This probably causes the inferior to run away.
 276     # Be prepared to rerun to main for further testing.)
 277
 278     gdb_test "signal SIGUSR1" "Breakpoint.*handler.*"
 279     gdb_test "bt" \
 280         "#0  handler .*#1  .signal handler called.*\#2 .*main.*" \
 281         "backtrace for SIGUSR1"
 282 }
 283
 284 return 0