gdb/testsuite/gdb.base/signals.exp

   1 # Copyright 1997, 1998, 1999, 2003, 2004, 2007 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
  16 if [target_info exists gdb,nosignals] {
  17     verbose "Skipping signals.exp because of nosignals."
  18     continue
  19 }
  20
  21 if $tracelevel then {
  22         strace $tracelevel
  23 }
  24
  25 set prms_id 0
  26 set bug_id 0
  27
  28 set testfile signals
  29 set srcfile ${testfile}.c
  30 set binfile ${objdir}/${subdir}/${testfile}
  31 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  32     untested signals.exp
  33     return -1
  34 }
  35
  36 # Create and source the file that provides information about the compiler
  37 # used to compile the test case.
  38 if [get_compiler_info ${binfile}] {
  39     return -1;
  40 }
  41
  42 if {$hp_cc_compiler} {
  43     set void 0
  44 } else {
  45     set void void
  46 }
  47
  48 gdb_exit
  49 gdb_start
  50
  51 # This will need to be updated as the exact list of signals changes,
  52 # but I want to test that TARGET_SIGNAL_0, TARGET_SIGNAL_DEFAULT, and
  53 # TARGET_SIGNAL_UNKNOWN are skipped.
  54
  55 proc test_handle_all_print {} {
  56     global timeout
  57     # Increase timeout and expect input buffer for large output from gdb.
  58     # Allow blank or TAB as whitespace characters.
  59     set oldtimeout $timeout
  60     set timeout [expr "$timeout + 360"]
  61     verbose "Timeout is now $timeout seconds" 2
  62     if { ![istarget "*-*-linux*"]
  63          && ( [istarget "*-*-gnu*"]
  64               || [istarget "*-*-mach*"] ) } {
  65         gdb_test "handle all print" "Signal\[   \]+Stop\[       \]+Print\[      \]+Pass to program\[    \]+Description\r\nSIGHUP\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Hangup.*SIG63\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Real-time event 63.*EXC_BREAKPOINT\[         \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Breakpoint"
  66     } else {
  67         gdb_test "handle all print" "Signal\[   \]+Stop\[       \]+Print\[      \]+Pass to program\[    \]+Description\r\nSIGHUP\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Hangup.*SIG63\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Real-time event 63.*"
  68     }
  69     set timeout $oldtimeout
  70     verbose "Timeout restored to $timeout seconds" 2
  71 }
  72 test_handle_all_print
  73
  74 gdb_exit
  75 gdb_start
  76 gdb_reinitialize_dir $srcdir/$subdir
  77 gdb_load $binfile
  78
  79 if [runto_main] then {
  80
  81     # Since count is a static variable outside main, runto_main is no
  82     # guarantee that count will be 0 at this point.
  83
  84     gdb_test "set variable count = 0" ""
  85
  86     # Test an inferior function call that takes a signal that hits a
  87     # breakpoint (with a false condition).  When GDB tries to run the
  88     # stack dummy, it will hit the breakpoint at handler.  Provided it
  89     # doesn't lose its cool, this is not a problem, it just has to
  90     # note that the breakpoint condition is false and keep going.
  91
  92     # ...setup an always false conditional breakpoint
  93
  94     gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*"
  95     gdb_test "set \$handler_breakpoint_number = \$bpnum" ""
  96
  97     # ...setup the signal
  98
  99     gdb_test "next" "signal \\(SIGUSR1.*" "next to signal"
 100     gdb_test "next" "alarm \\(.*" "next to alarm #1"
 101     gdb_test "next" "\\+\\+count; /\\* first \\*/" \
 102         "next to ++count #1"
 103     sleep 2
 104
 105     # ...call the function
 106
 107     gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \
 108         "p func1 () #1"
 109
 110     # ...veryfiy that the cout was updated
 111
 112     gdb_test "p count" "= 2" "p count #1"
 113
 114     # Now run the same test but with a breakpoint that does stop.
 115
 116     # ...set up the breakpoint and signal
 117
 118     gdb_test "condition \$handler_breakpoint_number" "now unconditional\\."
 119     gdb_test "next" "alarm \\(.*" "next to alarm #2"
 120     gdb_test "next" "\\+\\+count; /\\* second \\*/" \
 121         "next to ++count #2"
 122     sleep 2
 123
 124     # ...call the function, which is immediatly interrupted
 125
 126     gdb_test "p func1 ()" \
 127 "Breakpoint \[0-9\]*, handler.*
 128 The program being debugged stopped while in a function called from GDB.*" \
 129         "p func1 () #2"
 130
 131     # ...verify the backtrace
 132
 133     gdb_test "backtrace" \
 134         "#0  handler.*#1  .signal handler called.*#2  func1.*#3  .function called from gdb.*#4.*main.*" \
 135         "backtrace from handler when calling func1"
 136
 137     # ...and continue (silently returning)
 138
 139     gdb_test "continue" "Continuing\\."
 140
 141     # ...and then count should have been incremented
 142
 143     gdb_test "p count" "= 5" "p count #2"
 144
 145
 146     # Verify that "info signals" produces reasonable output.
 147
 148     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.*" \
 149         "info signals"
 150
 151     # Verify that "info signal" correctly handles an argument, be it a
 152     # symbolic signal name, or an integer ID.
 153
 154     gdb_test "info signal SIGTRAP" \
 155         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 156         "info signal SIGTRAP"
 157
 158     gdb_test "info signal 5" \
 159         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 160         "info signal 5"
 161
 162     # Verify that "handle" with illegal arguments is gracefully, um,
 163     # handled.
 164
 165     gdb_test "handle" \
 166         "Argument required .signal to handle.*" \
 167         "handle without arguments"
 168
 169     gdb_test "handle SIGFOO" \
 170         "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \
 171         "handle with bogus SIG"
 172
 173     gdb_test "handle SIGHUP frump" \
 174         "Unrecognized or ambiguous flag word: \"frump\".*" \
 175         "handle SIG with bogus action"
 176
 177     # Verify that "handle" can take multiple actions per SIG, and that
 178     # in the case of conflicting actions, that the rightmost action
 179     # "wins".
 180
 181     gdb_test "handle SIGHUP print noprint" \
 182         "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \
 183         "handle SIG with multiple conflicting actions"
 184
 185     # Exercise all the various actions.  (We don't care what the
 186     # outcome is, this is just to ensure that they all can be parsed.)
 187
 188     gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \
 189         "Signal.*" \
 190         "handle SIG parses all legal actions"
 191
 192     # Verify that we can "handle" multiple signals at once,
 193     # interspersed with actions.
 194
 195     gdb_test "handle SIG63 print SIGILL" \
 196         "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \
 197         "handle multiple SIGs"
 198
 199     # Verify that "handle" can take a numeric argument for the signal
 200     # ID, rather than a symbolic name.  (This may not be portable;
 201     # works for HP-UX.)
 202
 203     # Also note that this testpoint overrides SIGTRAP, which on HP-UX
 204     # at least, is used to implement single-steps and breakpoints.
 205     # Don't expect to run the inferior after this!
 206
 207     set test "override SIGTRAP"
 208     gdb_test_multiple "handle 5 nopass" "$test" {
 209         -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 210             gdb_test "y" \
 211                 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 212                 "$test"
 213         }
 214     }
 215
 216     # GDB doesn't seem to allow numeric signal IDs larger than 15.  Verify
 217     # that restriction.  ??rehrauer: Not sure if this is a feature or a
 218     # bug, actually.  Why is the range 1-15?
 219
 220     gdb_test "handle 58" \
 221         "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \
 222         "invalid signal number rejected"
 223
 224     # Verify that we can accept a signal ID range (number-number).
 225     # ??rehrauer: This feature isn't documented on the quick-reference
 226     # card.
 227
 228     gdb_test "handle 13-15" \
 229         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 230         "handle multiple SIGs via integer range"
 231
 232     # Bizarrely enough, GDB also allows you to reverse the range stat,
 233     # stop IDs.  E.g., "3-1" and "1-3" mean the same thing.  Probably
 234     # this isn't documented, but the code anticipates it, so we'd best
 235     # test it...
 236
 237     gdb_test "handle 15-13" \
 238         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 239         "handle multiple SIGs via reverse integer range"
 240
 241     # SIGINT is used by the debugger as well.  Verify that we can
 242     # change our minds about changing it.
 243
 244     set test "override SIGINT"
 245     gdb_test_multiple "handle SIGINT nopass" "$test" {
 246         -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 247             gdb_test_multiple "n" "$test" {
 248                 -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $"  {
 249                     # "Signal ..." should not be in the output.
 250                     kfail gdb/1707 "$test"
 251                 }
 252                 -re "Not confirmed, unchanged.*$gdb_prompt $" {
 253                     pass "$test"
 254                 }
 255             }
 256         }
 257     }
 258
 259     # Verify that GDB responds gracefully to the "signal" command with
 260     # a missing argument.
 261
 262     gdb_test "signal" \
 263         "Argument required .signal number..*" \
 264         "signal without arguments disallowed"
 265
 266     # Verify that we can successfully send a signal other than 0 to
 267     # the inferior.  (This probably causes the inferior to run away.
 268     # Be prepared to rerun to main for further testing.)
 269
 270     gdb_test "signal SIGUSR1" "Breakpoint.*handler.*"
 271     gdb_test "bt" \
 272         "#0  handler .*#1  .signal handler called.*\#2 .*main.*" \
 273         "backtrace for SIGUSR1"
 274 }
 275
 276 return 0