gdb/testsuite/gdb.base/signals.exp

   1 # Copyright 1997-1999, 2003-2004, 2007-2012 Free Software Foundation,
   2 # 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
  23 set testfile signals
  24 set srcfile ${testfile}.c
  25 set binfile ${objdir}/${subdir}/${testfile}
  26 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  27     untested signals.exp
  28     return -1
  29 }
  30
  31 # Create and source the file that provides information about the compiler
  32 # used to compile the test case.
  33 if [get_compiler_info ${binfile}] {
  34     return -1;
  35 }
  36
  37 if {$hp_cc_compiler} {
  38     set void 0
  39 } else {
  40     set void void
  41 }
  42
  43 gdb_exit
  44 gdb_start
  45
  46 # This will need to be updated as the exact list of signals changes,
  47 # but I want to test that GDB_SIGNAL_0, GDB_SIGNAL_DEFAULT, and
  48 # GDB_SIGNAL_UNKNOWN are skipped.
  49
  50 proc test_handle_all_print {} {
  51     global timeout
  52     # Increase timeout and expect input buffer for large output from gdb.
  53     # Allow blank or TAB as whitespace characters.
  54     set oldtimeout $timeout
  55     set timeout [expr "$timeout + 60"]
  56     verbose "Timeout is now $timeout seconds" 2
  57     if { ![istarget "*-*-linux*"]
  58          && ( [istarget "*-*-gnu*"]
  59               || [istarget "*-*-mach*"] ) } {
  60         gdb_test_sequence "handle all print" "" \
  61             {
  62                 "Signal\[       \]+Stop\[       \]+Print\[      \]+Pass to program\[    \]+Description\r\nSIGHUP\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Hangup"
  63                 "SIG63\[        \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Real-time event 63"
  64                 "EXC_BREAKPOINT\[       \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Breakpoint"
  65             }
  66     } else {
  67         gdb_test_sequence "handle all print" "" \
  68             {
  69                 "Signal\[       \]+Stop\[       \]+Print\[      \]+Pass to program\[    \]+Description\r\nSIGHUP\[      \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Hangup"
  70                 "SIG63\[        \]+Yes\[        \]+Yes\[        \]+Yes\[        \]+Real-time event 63"
  71             }
  72     }
  73     set timeout $oldtimeout
  74     verbose "Timeout restored to $timeout seconds" 2
  75 }
  76 test_handle_all_print
  77
  78 gdb_exit
  79 gdb_start
  80 gdb_reinitialize_dir $srcdir/$subdir
  81 gdb_load $binfile
  82
  83 if [runto_main] then {
  84
  85     # Since count is a static variable outside main, runto_main is no
  86     # guarantee that count will be 0 at this point.
  87
  88     gdb_test_no_output "set variable count = 0"
  89
  90     # Test an inferior function call that takes a signal that hits a
  91     # breakpoint (with a false condition).  When GDB tries to run the
  92     # stack dummy, it will hit the breakpoint at handler.  Provided it
  93     # doesn't lose its cool, this is not a problem, it just has to
  94     # note that the breakpoint condition is false and keep going.
  95
  96     # ...setup an always false conditional breakpoint
  97
  98     gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*"
  99     gdb_test_no_output "set \$handler_breakpoint_number = \$bpnum"
 100
 101     # ...setup the signal
 102
 103     gdb_test "next" "signal \\(SIGUSR1.*" "next to signal"
 104     gdb_test "next" "alarm \\(.*" "next to alarm #1"
 105     gdb_test "next" "\\+\\+count; /\\* first \\*/" \
 106         "next to ++count #1"
 107     sleep 2
 108
 109     # ...call the function
 110
 111     gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \
 112         "p func1 () #1"
 113
 114     # ...veryfiy that the cout was updated
 115
 116     gdb_test "p count" "= 2" "p count #1"
 117
 118     # Now run the same test but with a breakpoint that does stop.
 119
 120     # ...set up the breakpoint and signal
 121
 122     gdb_test "condition \$handler_breakpoint_number" "now unconditional\\."
 123     gdb_test "next" "alarm \\(.*" "next to alarm #2"
 124     gdb_test "next" "\\+\\+count; /\\* second \\*/" \
 125         "next to ++count #2"
 126     sleep 2
 127
 128     # ...call the function, which is immediatly interrupted
 129
 130     gdb_test "p func1 ()" \
 131 "Breakpoint \[0-9\]*, handler.*
 132 The program being debugged stopped while in a function called from GDB.*" \
 133         "p func1 () #2"
 134
 135     # ...verify the backtrace
 136
 137     gdb_test "backtrace" \
 138         "#0  handler.*#1  .signal handler called.*#2  func1.*#3  .function called from gdb.*#4.*main.*" \
 139         "backtrace from handler when calling func1"
 140
 141     # ...and continue (silently returning)
 142
 143     gdb_test "continue" "Continuing\\."
 144
 145     # ...and then count should have been incremented
 146
 147     gdb_test "p count" "= 5" "p count #2"
 148
 149
 150     # Verify that "info signals" produces reasonable output.
 151
 152     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.*" \
 153         "info signals"
 154
 155     # Verify that "info signal" correctly handles an argument, be it a
 156     # symbolic signal name, or an integer ID.
 157
 158     gdb_test "info signal SIGTRAP" \
 159         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 160         "info signal SIGTRAP"
 161
 162     gdb_test "info signal 5" \
 163         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 164         "info signal 5"
 165
 166     # Verify that "handle" with illegal arguments is gracefully, um,
 167     # handled.
 168
 169     gdb_test "handle" \
 170         "Argument required .signal to handle.*" \
 171         "handle without arguments"
 172
 173     gdb_test "handle SIGFOO" \
 174         "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \
 175         "handle with bogus SIG"
 176
 177     gdb_test "handle SIGHUP frump" \
 178         "Unrecognized or ambiguous flag word: \"frump\".*" \
 179         "handle SIG with bogus action"
 180
 181     # Verify that "handle" can take multiple actions per SIG, and that
 182     # in the case of conflicting actions, that the rightmost action
 183     # "wins".
 184
 185     gdb_test "handle SIGHUP print noprint" \
 186         "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \
 187         "handle SIG with multiple conflicting actions"
 188
 189     # Exercise all the various actions.  (We don't care what the
 190     # outcome is, this is just to ensure that they all can be parsed.)
 191
 192     gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \
 193         "Signal.*" \
 194         "handle SIG parses all legal actions"
 195
 196     # Verify that we can "handle" multiple signals at once,
 197     # interspersed with actions.
 198
 199     gdb_test "handle SIG63 print SIGILL" \
 200         "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \
 201         "handle multiple SIGs"
 202
 203     # Verify that "handle" can take a numeric argument for the signal
 204     # ID, rather than a symbolic name.  (This may not be portable;
 205     # works for HP-UX.)
 206
 207     # Also note that this testpoint overrides SIGTRAP, which on HP-UX
 208     # at least, is used to implement single-steps and breakpoints.
 209     # Don't expect to run the inferior after this!
 210
 211     set test "override SIGTRAP"
 212     gdb_test_multiple "handle 5 nopass" "$test" {
 213         -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 214             gdb_test "y" \
 215                 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 216                 "$test"
 217         }
 218     }
 219
 220     # GDB doesn't seem to allow numeric signal IDs larger than 15.  Verify
 221     # that restriction.  ??rehrauer: Not sure if this is a feature or a
 222     # bug, actually.  Why is the range 1-15?
 223
 224     gdb_test "handle 58" \
 225         "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \
 226         "invalid signal number rejected"
 227
 228     # Verify that we can accept a signal ID range (number-number).
 229     # ??rehrauer: This feature isn't documented on the quick-reference
 230     # card.
 231
 232     gdb_test "handle 13-15" \
 233         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 234         "handle multiple SIGs via integer range"
 235
 236     # Bizarrely enough, GDB also allows you to reverse the range stat,
 237     # stop IDs.  E.g., "3-1" and "1-3" mean the same thing.  Probably
 238     # this isn't documented, but the code anticipates it, so we'd best
 239     # test it...
 240
 241     gdb_test "handle 15-13" \
 242         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 243         "handle multiple SIGs via reverse integer range"
 244
 245     # SIGINT is used by the debugger as well.  Verify that we can
 246     # change our minds about changing it.
 247
 248     set test "override SIGINT"
 249     gdb_test_multiple "handle SIGINT nopass" "$test" {
 250         -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 251             gdb_test_multiple "n" "$test" {
 252                 -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $"  {
 253                     # "Signal ..." should not be in the output.
 254                     fail gdb/8812 "$test"
 255                 }
 256                 -re "Not confirmed, unchanged.*$gdb_prompt $" {
 257                     pass "$test"
 258                 }
 259             }
 260         }
 261     }
 262
 263     # Verify that GDB responds gracefully to the "signal" command with
 264     # a missing argument.
 265
 266     gdb_test "signal" \
 267         "Argument required .signal number..*" \
 268         "signal without arguments disallowed"
 269
 270     # Verify that we can successfully send a signal other than 0 to
 271     # the inferior.  (This probably causes the inferior to run away.
 272     # Be prepared to rerun to main for further testing.)
 273
 274     gdb_test "signal SIGUSR1" "Breakpoint.*handler.*"
 275     gdb_test "bt" \
 276         "#0  handler .*#1  .signal handler called.*\#2 .*main.*" \
 277         "backtrace for SIGUSR1"
 278 }
 279
 280 return 0