gdb/testsuite/gdb.base/signals.exp

   1 # Copyright 1997, 1998, 1999, 2003, 2004 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  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 set prms_id 0
  27 set bug_id 0
  28
  29 set testfile signals
  30 set srcfile ${testfile}.c
  31 set binfile ${objdir}/${subdir}/${testfile}
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  33     untested signals.exp
  34     return -1
  35 }
  36
  37 # Create and source the file that provides information about the compiler
  38 # used to compile the test case.
  39 if [get_compiler_info ${binfile}] {
  40     return -1;
  41 }
  42
  43 if {$hp_cc_compiler} {
  44     set void 0
  45 } else {
  46     set void void
  47 }
  48
  49 gdb_exit
  50 gdb_start
  51
  52 # This will need to be updated as the exact list of signals changes,
  53 # but I want to test that TARGET_SIGNAL_0, TARGET_SIGNAL_DEFAULT, and
  54 # TARGET_SIGNAL_UNKNOWN are skipped.
  55
  56 proc test_handle_all_print {} {
  57     global timeout
  58     # Increase timeout and expect input buffer for large output from gdb.
  59     # Allow blank or TAB as whitespace characters.
  60     set oldtimeout $timeout
  61     set timeout [expr "$timeout + 360"]
  62     verbose "Timeout is now $timeout seconds" 2
  63     if { ![istarget "*-*-linux*"]
  64          && ( [istarget "*-*-gnu*"]
  65               || [istarget "*-*-mach*"] ) } {
  66         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"
  67     } else {
  68         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.*"
  69     }
  70     set timeout $oldtimeout
  71     verbose "Timeout restored to $timeout seconds" 2
  72 }
  73 test_handle_all_print
  74
  75 gdb_exit
  76 gdb_start
  77 gdb_reinitialize_dir $srcdir/$subdir
  78 gdb_load $binfile
  79
  80 if [runto_main] then {
  81
  82     # Since count is a static variable outside main, runto_main is no
  83     # guarantee that count will be 0 at this point.
  84
  85     gdb_test "set variable count = 0" ""
  86
  87     # Test an inferior function call that takes a signal that hits a
  88     # breakpoint (with a false condition).  When GDB tries to run the
  89     # stack dummy, it will hit the breakpoint at handler.  Provided it
  90     # doesn't lose its cool, this is not a problem, it just has to
  91     # note that the breakpoint condition is false and keep going.
  92
  93     # ...setup an always false conditional breakpoint
  94
  95     gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*"
  96     gdb_test "set \$handler_breakpoint_number = \$bpnum" ""
  97
  98     # ...setup the signal
  99
 100     gdb_test "next" "signal \\(SIGUSR1.*" "next to signal"
 101     gdb_test "next" "alarm \\(.*" "next to alarm #1"
 102     gdb_test "next" "\\+\\+count; /\\* first \\*/" \
 103         "next to ++count #1"
 104     sleep 2
 105
 106     # ...call the function
 107
 108     gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \
 109         "p func1 () #1"
 110
 111     # ...veryfiy that the cout was updated
 112
 113     gdb_test "p count" "= 2" "p count #1"
 114
 115     # Now run the same test but with a breakpoint that does stop.
 116
 117     # ...set up the breakpoint and signal
 118
 119     gdb_test "condition \$handler_breakpoint_number" "now unconditional\\."
 120     gdb_test "next" "alarm \\(.*" "next to alarm #2"
 121     gdb_test "next" "\\+\\+count; /\\* second \\*/" \
 122         "next to ++count #2"
 123     sleep 2
 124
 125     # ...call the function, which is immediatly interrupted
 126
 127     gdb_test "p func1 ()" \
 128 "Breakpoint \[0-9\]*, handler.*
 129 The program being debugged stopped while in a function called from GDB.*" \
 130         "p func1 () #2"
 131
 132     # ...verify the backtrace
 133
 134     gdb_test "backtrace" \
 135         "#0  handler.*#1  .signal handler called.*#2  func1.*#3  .function called from gdb.*#4.*main.*" \
 136         "backtrace from handler when calling func1"
 137
 138     # ...and continue (silently returning)
 139
 140     gdb_test "continue" "Continuing\\."
 141
 142     # ...and then count should have been incremented
 143
 144     gdb_test "p count" "= 5" "p count #2"
 145
 146
 147     # Verify that "info signals" produces reasonable output.
 148
 149     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.*" \
 150         "info signals"
 151
 152     # Verify that "info signal" correctly handles an argument, be it a
 153     # symbolic signal name, or an integer ID.
 154
 155     gdb_test "info signal SIGTRAP" \
 156         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 157         "info signal SIGTRAP"
 158
 159     gdb_test "info signal 5" \
 160         "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 161         "info signal 5"
 162
 163     # Verify that "handle" with illegal arguments is gracefully, um,
 164     # handled.
 165
 166     gdb_test "handle" \
 167         "Argument required .signal to handle.*" \
 168         "handle without arguments"
 169
 170     gdb_test "handle SIGFOO" \
 171         "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \
 172         "handle with bogus SIG"
 173
 174     gdb_test "handle SIGHUP frump" \
 175         "Unrecognized or ambiguous flag word: \"frump\".*" \
 176         "handle SIG with bogus action"
 177
 178     # Verify that "handle" can take multiple actions per SIG, and that
 179     # in the case of conflicting actions, that the rightmost action
 180     # "wins".
 181
 182     gdb_test "handle SIGHUP print noprint" \
 183         "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \
 184         "handle SIG with multiple conflicting actions"
 185
 186     # Exercise all the various actions.  (We don't care what the
 187     # outcome is, this is just to ensure that they all can be parsed.)
 188
 189     gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \
 190         "Signal.*" \
 191         "handle SIG parses all legal actions"
 192
 193     # Verify that we can "handle" multiple signals at once,
 194     # interspersed with actions.
 195
 196     gdb_test "handle SIG63 print SIGILL" \
 197         "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \
 198         "handle multiple SIGs"
 199
 200     # Verify that "handle" can take a numeric argument for the signal
 201     # ID, rather than a symbolic name.  (This may not be portable;
 202     # works for HP-UX.)
 203
 204     # Also note that this testpoint overrides SIGTRAP, which on HP-UX
 205     # at least, is used to implement single-steps and breakpoints.
 206     # Don't expect to run the inferior after this!
 207
 208     set test "override SIGTRAP"
 209     gdb_test_multiple "handle 5 nopass" "$test" {
 210         -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 211             gdb_test "y" \
 212                 "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
 213                 "$test"
 214         }
 215     }
 216
 217     # GDB doesn't seem to allow numeric signal IDs larger than 15.  Verify
 218     # that restriction.  ??rehrauer: Not sure if this is a feature or a
 219     # bug, actually.  Why is the range 1-15?
 220
 221     gdb_test "handle 58" \
 222         "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \
 223         "invalid signal number rejected"
 224
 225     # Verify that we can accept a signal ID range (number-number).
 226     # ??rehrauer: This feature isn't documented on the quick-reference
 227     # card.
 228
 229     gdb_test "handle 13-15" \
 230         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 231         "handle multiple SIGs via integer range"
 232
 233     # Bizarrely enough, GDB also allows you to reverse the range stat,
 234     # stop IDs.  E.g., "3-1" and "1-3" mean the same thing.  Probably
 235     # this isn't documented, but the code anticipates it, so we'd best
 236     # test it...
 237
 238     gdb_test "handle 15-13" \
 239         "SIGPIPE.*SIGALRM.*SIGTERM.*" \
 240         "handle multiple SIGs via reverse integer range"
 241
 242     # SIGINT is used by the debugger as well.  Verify that we can
 243     # change our minds about changing it.
 244
 245     set test "override SIGINT"
 246     gdb_test_multiple "handle SIGINT nopass" "$test" {
 247         -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" {
 248             gdb_test_multiple "n" "$test" {
 249                 -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $"  {
 250                     # "Signal ..." should not be in the output.
 251                     kfail gdb/1707 "$test"
 252                 }
 253                 -re "Not confirmed, unchanged.*$gdb_prompt $" {
 254                     pass "$test"
 255                 }
 256             }
 257         }
 258     }
 259
 260     # Verify that GDB responds gracefully to the "signal" command with
 261     # a missing argument.
 262
 263     gdb_test "signal" \
 264         "Argument required .signal number..*" \
 265         "signal without arguments disallowed"
 266
 267     # Verify that we can successfully send a signal other than 0 to
 268     # the inferior.  (This probably causes the inferior to run away.
 269     # Be prepared to rerun to main for further testing.)
 270
 271     gdb_test "signal SIGUSR1" "Breakpoint.*handler.*"
 272     gdb_test "bt" \
 273         "#0  handler .*#1  .signal handler called.*\#2 .*main.*" \
 274         "backtrace for SIGUSR1"
 275 }
 276
 277 return 0