+# Copyright 1997, 1998, 1999, 2003, 2004, 2007 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+if [target_info exists gdb,nosignals] {
+ verbose "Skipping signals.exp because of nosignals."
+ continue
+}
+
if $tracelevel then {
strace $tracelevel
}
set prms_id 0
set bug_id 0
-gdb_reinitialize_dir $srcdir/$subdir
-set binfile $objdir/$subdir/signals
+set testfile signals
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
+ untested signals.exp
+ return -1
+}
-if ![file exists $binfile] then {
- perror "$binfile does not exist."
- return 0
+# Create and source the file that provides information about the compiler
+# used to compile the test case.
+if [get_compiler_info ${binfile}] {
+ return -1;
}
-proc signal_tests_1 {} {
- global prompt
- if [runto main] then {
- gdb_test "next" "signal \[(\]+SIGUSR1" \
- "next over signal \[(\]SIGALRM, handler\[)\]+"
- gdb_test "next" "alarm \[(\]" \
- "next over signal \[(\]+SIGUSR1, handler\[)\]+"
- gdb_test "next" "\[+\]+count" \
- "next over alarm (1)"
- # An alarm has been signaled, give the signal time to get delivered.
- exec sleep 2
-
- # i386 BSD currently fails the next test with a SIGTRAP.
- setup_xfail "i*86-*-bsd*"
- # But Dynix has a DECR_PC_AFTER_BREAK of zero, so the failure
- # is shadowed by hitting the through_sigtramp_breakpoint.
- clear_xfail "i*86-sequent-bsd*"
- # Univel SVR4 i386 continues instead of stepping.
- setup_xfail "i*86-univel-sysv4*"
- send "next\n"
- expect {
- -re "alarm .*$prompt $" { pass "next to 2nd alarm (1)" }
- -re "Program received signal SIGTRAP.*first.*$prompt $" {
-
- # This can happen on machines that have a trace flag
- # in their PS register.
- # The trace flag in the PS register will be set due to
- # the `next' command.
- # Before calling the signal handler, the PS register
- # is pushed along with the context on the user stack.
- # When the signal handler has finished, it reenters the
- # the kernel via a sigreturn syscall, which restores the
- # PS register along with the context.
- # If the kernel erroneously does not clear the trace flag
- # in the pushed context, gdb will receive a SIGTRAP from
- # the set trace flag in the restored context after the
- # signal handler has finished.
-
- # I do not yet understand why the SIGTRAP does not occur
- # after stepping the instruction at the restored PC on
- # i386 BSDI 1.0 systems.
-
- # Note that the vax under Ultrix also exhibits
- # this behaviour (it is uncovered by the `continue from
- # a break in a signal handler' test below).
- # With this test the failure is shadowed by hitting the
- # through_sigtramp_breakpoint upon return from the signal
- # handler.
-
- fail "next to 2nd alarm (1) (probably kernel bug)"
- gdb_test "next" "alarm" "next to 2nd alarm (1)"
- }
- -re "Program exited with code.*$prompt $" {
-
- # This is apparently a bug in the UnixWare kernel (but
- # has not been investigated beyond the
- # resume/target_wait level, and has not been reported
- # to Univel). If it steps when a signal is pending,
- # it does a continue instead. I don't know whether
- # there is a workaround.
-
- # Perhaps this problem exists on other SVR4 systems;
- # but (a) we have no reason to think so, and (b) if we
- # put a wrong xfail here, we never get an XPASS to let
- # us know that it was incorrect (and then if such a
- # configuration regresses we have no way of knowing).
- # Solaris is not a relevant data point either way
- # because it lacks single stepping.
-
- fail "'next' behaved as 'continue'"
- return 0
- }
- -re ".*$prompt $" { fail "next to 2nd alarm (1)" }
- timeout { fail "next to 2nd alarm (1); (timeout)" }
- eof { fail "next to 2nd alarm (1); (eof)" }
- }
+if {$hp_cc_compiler} {
+ set void 0
+} else {
+ set void void
+}
- gdb_test "break handler" "Breakpoint \[0-9\]*"
- gdb_test "next" "\[+\]+count" "next to 2nd ++count"
- # An alarm has been signaled, give the signal time to get delivered.
- exec sleep 2
-
- set bash_bug 0
- send "next\n"
- expect {
- -re "Breakpoint.*handler.*$prompt $" { pass "next" }
- -re "Program received signal SIGEMT.*$prompt $" {
- # Bash versions before 1.13.5 cause this behaviour
- # by blocking SIGTRAP.
- fail "next (known problem with bash versions before 1.13.5)"
- set bash_bug 1
- gdb_test "signal 0" "Breakpoint.*handler"
- }
- -re ".*$prompt $" { fail "next" }
- timeout { fail "(timeout)" }
- eof { fail "(eof)" }
- }
+gdb_exit
+gdb_start
+
+# This will need to be updated as the exact list of signals changes,
+# but I want to test that TARGET_SIGNAL_0, TARGET_SIGNAL_DEFAULT, and
+# TARGET_SIGNAL_UNKNOWN are skipped.
+
+proc test_handle_all_print {} {
+ global timeout
+ # Increase timeout and expect input buffer for large output from gdb.
+ # Allow blank or TAB as whitespace characters.
+ set oldtimeout $timeout
+ set timeout [expr "$timeout + 360"]
+ verbose "Timeout is now $timeout seconds" 2
+ if { ![istarget "*-*-linux*"]
+ && ( [istarget "*-*-gnu*"]
+ || [istarget "*-*-mach*"] ) } {
+ 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"
+ } else {
+ 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.*"
+ }
+ set timeout $oldtimeout
+ verbose "Timeout restored to $timeout seconds" 2
+}
+test_handle_all_print
- # This doesn't test that main is frame #2, just that main is frame
- # #2, #3, or higher. At some point this should be fixed (but
- # it quite possibly would introduce new FAILs on some systems).
- gdb_test "backtrace" "#0.*handler.*#1.*#2.*main"
-
- gdb_test "break func1" "Breakpoint \[0-9\]*"
- gdb_test "break func2" "Breakpoint \[0-9\]*"
-
- # Vax Ultrix and i386 BSD currently fail the next test with
- # a SIGTRAP, but with different symptoms.
- setup_xfail "vax-*-ultrix*"
- setup_xfail "i*86-*-bsd*"
- send "continue\n"
- expect {
- -re "Breakpoint.*func1.*$prompt $" { pass "continue" }
- -re "Program received signal SIGTRAP.*second.*$prompt $" {
-
- # See explanation for `next to 2nd alarm (1)' fail above.
- # We did step into the signal handler, hit a breakpoint
- # in the handler and continued from the breakpoint.
- # The set trace flag in the restored context is causing
- # the SIGTRAP, without stepping an instruction.
-
- fail "continue (probably kernel bug)"
- gdb_test "continue" "Breakpoint.*func1"
- }
- -re "Program received signal SIGTRAP.*func1 ..;.*$prompt $" {
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load $binfile
- # On the vax under Ultrix the set trace flag in the restored
- # context is causing the SIGTRAP, but after stepping one
- # instruction, as expected.
+if [runto_main] then {
- fail "continue (probably kernel bug)"
- gdb_test "continue" "Breakpoint.*func1"
- }
- -re ".*$prompt $" { fail "continue" }
- default { fail "continue" }
- }
- gdb_test "signal SIGUSR1" "Breakpoint.*handler"
-
- # Will tend to wrongly require an extra continue.
-
- # The problem here is that the breakpoint at func1 will be
- # inserted, and when the system finishes with the signal
- # handler it will try to execute there. For GDB to try to
- # remember that it was going to step over a breakpoint when a
- # signal happened, distinguish this case from the case where
- # func1 is called from the signal handler, etc., seems
- # exceedingly difficult. So don't expect this to get fixed
- # anytime soon.
-
- setup_xfail "*-*-*"
- send "continue\n"
- expect {
- -re "Breakpoint.*func2.*$prompt $" { pass "continue" }
- -re "Breakpoint.*func1.*$prompt $" {
- fail "continue"
- gdb_test "continue" "Breakpoint.*func2"
- }
- -re ".*$prompt $" { fail "continue" }
- default { fail "continue" }
- }
+ # Since count is a static variable outside main, runto_main is no
+ # guarantee that count will be 0 at this point.
- exec sleep 2
+ gdb_test "set variable count = 0" ""
- # GDB yanks out the breakpoints to step over the breakpoint it
- # stopped at, which means the breakpoint at handler is yanked.
- # But if NO_SINGLE_STEP, we won't get another chance to reinsert
- # them (at least not with procfs, where we tell the kernel not
- # to tell gdb about `pass' signals). So the fix would appear to
- # be to just yank that one breakpoint when we step over it.
+ # Test an inferior function call that takes a signal that hits a
+ # breakpoint (with a false condition). When GDB tries to run the
+ # stack dummy, it will hit the breakpoint at handler. Provided it
+ # doesn't lose its cool, this is not a problem, it just has to
+ # note that the breakpoint condition is false and keep going.
- setup_xfail "sparc-*-*"
- setup_xfail "rs6000-*-*"
+ # ...setup an always false conditional breakpoint
- # A faulty bash will not step the inferior into sigtramp on sun3.
- if {$bash_bug} then {
- setup_xfail "m68*-*-sunos4*"
- }
+ gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*"
+ gdb_test "set \$handler_breakpoint_number = \$bpnum" ""
- gdb_test "continue" "Breakpoint.*handler"
-
- # If the NO_SINGLE_STEP failure happened, we have already exited.
- # If we succeeded a continue will return from the handler to func2.
- # GDB now has `forgotten' that it intended to step over the
- # breakpoint at func2 and will stop at func2.
- setup_xfail "*-*-*"
- # The sun3 with a faulty bash will also be `forgetful' but it
- # already got the spurious stop at func2 and this continue will work.
- if {$bash_bug} then {
- clear_xfail "m68*-*-sunos4*"
- }
- gdb_test "continue" "Program exited with code 010"
- }
-}
+ # ...setup the signal
-# On a few losing systems, ptrace (PT_CONTINUE) or ptrace (PT_STEP)
-# causes pending signals to be cleared, which causes these tests to
-# get nowhere fast. This is totally losing behavior (perhaps there
-# are cases in which is it useful but the user needs more control,
-# which they mostly have in GDB), but some people apparently think it
-# is a feature. It is documented in the ptrace manpage on Motorola
-# Delta Series sysV68 R3V7.1 and on HPUX 9.0. Even the non-HPUX PA
-# OSes (BSD and OSF/1) seem to have figured they had to copy this
-# braindamage.
-
-if {[ istarget "m68*-motorola-*" ] || [ istarget "hppa*-*-bsd*" ] ||
- [ istarget "*-*-hpux*" ] || [ istarget "hppa*-*-osf*" ]} then {
- setup_xfail "*-*-*"
- fail "ptrace loses on signals on this target"
- return 0
-}
+ gdb_test "next" "signal \\(SIGUSR1.*" "next to signal"
+ gdb_test "next" "alarm \\(.*" "next to alarm #1"
+ gdb_test "next" "\\+\\+count; /\\* first \\*/" \
+ "next to ++count #1"
+ sleep 2
-{
- gdb_load $binfile
- signal_tests_1
-
- # Force a resync, so we're looking at the right prompt. On SCO we
- # were getting out of sync (I don't understand why).
- send "p 1+1\n"
- expect {
- -re "= 2.*$prompt $" {}
- -re ".*$prompt $" { perror "sync trouble in signals.exp" }
- default { perror "sync trouble in signals.exp" }
- }
+ # ...call the function
- if [runto main] then {
- gdb_test "break handler if 0" "Breakpoint \[0-9\]*"
- gdb_test "set \\\$handler_breakpoint_number = \\\$bpnum" ""
+ gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \
+ "p func1 () #1"
- # Get to the point where a signal is waiting to be delivered
- gdb_test "next" "signal \[(\]+SIGUSR1"
- gdb_test "next" "alarm \[(\]+"
- gdb_test "next" "\[+\]+count"
- # Give the signal time to get delivered
- exec sleep 2
+ # ...veryfiy that the cout was updated
- # Now call a function. When GDB tries to run the stack dummy,
- # it will hit the breakpoint at handler. Provided it doesn't
- # lose its cool, this is not a problem, it just has to note
- # that the breakpoint condition is false and keep going.
+ gdb_test "p count" "= 2" "p count #1"
- gdb_test "p func1 ()" "^p func1 \[)(\]+\r\n.\[0-9\]* = void"
+ # Now run the same test but with a breakpoint that does stop.
- # Make sure the count got incremented.
+ # ...set up the breakpoint and signal
- # Haven't investigated this xfail
- setup_xfail "rs6000-*-*"
- gdb_test "p count" "= 2"
- if [istarget "rs6000-*-*"] { return 0 }
+ gdb_test "condition \$handler_breakpoint_number" "now unconditional\\."
+ gdb_test "next" "alarm \\(.*" "next to alarm #2"
+ gdb_test "next" "\\+\\+count; /\\* second \\*/" \
+ "next to ++count #2"
+ sleep 2
- gdb_test "condition \\\$handler_breakpoint_number" "now unconditional"
- gdb_test "next" "alarm \[(\]+"
- gdb_test "next" "\[+\]+count"
- exec sleep 2
+ # ...call the function, which is immediatly interrupted
- # This time we stop when GDB tries to run the stack dummy.
- # So it is OK that we do not print the return value from the function.
- gdb_test "p func1 ()" \
+ gdb_test "p func1 ()" \
"Breakpoint \[0-9\]*, handler.*
-The program being debugged stopped while in a function called from GDB"
- # But we should be able to backtrace...
- gdb_test "bt" "#0.*handler.*#1.*#2.*main"
- # ...and continue...
- gdb_test "continue" "Continuing"
- # ...and then count should have been incremented
- gdb_test "p count" "= 5"
+The program being debugged stopped while in a function called from GDB.*" \
+ "p func1 () #2"
+
+ # ...verify the backtrace
+
+ gdb_test "backtrace" \
+ "#0 handler.*#1 .signal handler called.*#2 func1.*#3 .function called from gdb.*#4.*main.*" \
+ "backtrace from handler when calling func1"
+
+ # ...and continue (silently returning)
+
+ gdb_test "continue" "Continuing\\."
+
+ # ...and then count should have been incremented
+
+ gdb_test "p count" "= 5" "p count #2"
+
+
+ # Verify that "info signals" produces reasonable output.
+
+ 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.*" \
+ "info signals"
+
+ # Verify that "info signal" correctly handles an argument, be it a
+ # symbolic signal name, or an integer ID.
+
+ gdb_test "info signal SIGTRAP" \
+ "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
+ "info signal SIGTRAP"
+
+ gdb_test "info signal 5" \
+ "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
+ "info signal 5"
+
+ # Verify that "handle" with illegal arguments is gracefully, um,
+ # handled.
+
+ gdb_test "handle" \
+ "Argument required .signal to handle.*" \
+ "handle without arguments"
+
+ gdb_test "handle SIGFOO" \
+ "Unrecognized or ambiguous flag word: \"SIGFOO\".*" \
+ "handle with bogus SIG"
+
+ gdb_test "handle SIGHUP frump" \
+ "Unrecognized or ambiguous flag word: \"frump\".*" \
+ "handle SIG with bogus action"
+
+ # Verify that "handle" can take multiple actions per SIG, and that
+ # in the case of conflicting actions, that the rightmost action
+ # "wins".
+
+ gdb_test "handle SIGHUP print noprint" \
+ "SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \
+ "handle SIG with multiple conflicting actions"
+
+ # Exercise all the various actions. (We don't care what the
+ # outcome is, this is just to ensure that they all can be parsed.)
+
+ gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \
+ "Signal.*" \
+ "handle SIG parses all legal actions"
+
+ # Verify that we can "handle" multiple signals at once,
+ # interspersed with actions.
+
+ gdb_test "handle SIG63 print SIGILL" \
+ "SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \
+ "handle multiple SIGs"
+
+ # Verify that "handle" can take a numeric argument for the signal
+ # ID, rather than a symbolic name. (This may not be portable;
+ # works for HP-UX.)
+
+ # Also note that this testpoint overrides SIGTRAP, which on HP-UX
+ # at least, is used to implement single-steps and breakpoints.
+ # Don't expect to run the inferior after this!
+
+ set test "override SIGTRAP"
+ gdb_test_multiple "handle 5 nopass" "$test" {
+ -re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" {
+ gdb_test "y" \
+ "SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
+ "$test"
+ }
}
+
+ # GDB doesn't seem to allow numeric signal IDs larger than 15. Verify
+ # that restriction. ??rehrauer: Not sure if this is a feature or a
+ # bug, actually. Why is the range 1-15?
+
+ gdb_test "handle 58" \
+ "Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \
+ "invalid signal number rejected"
+
+ # Verify that we can accept a signal ID range (number-number).
+ # ??rehrauer: This feature isn't documented on the quick-reference
+ # card.
+
+ gdb_test "handle 13-15" \
+ "SIGPIPE.*SIGALRM.*SIGTERM.*" \
+ "handle multiple SIGs via integer range"
+
+ # Bizarrely enough, GDB also allows you to reverse the range stat,
+ # stop IDs. E.g., "3-1" and "1-3" mean the same thing. Probably
+ # this isn't documented, but the code anticipates it, so we'd best
+ # test it...
+
+ gdb_test "handle 15-13" \
+ "SIGPIPE.*SIGALRM.*SIGTERM.*" \
+ "handle multiple SIGs via reverse integer range"
+
+ # SIGINT is used by the debugger as well. Verify that we can
+ # change our minds about changing it.
+
+ set test "override SIGINT"
+ gdb_test_multiple "handle SIGINT nopass" "$test" {
+ -re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" {
+ gdb_test_multiple "n" "$test" {
+ -re "Not confirmed, unchanged.*Signal.*$gdb_prompt $" {
+ # "Signal ..." should not be in the output.
+ kfail gdb/1707 "$test"
+ }
+ -re "Not confirmed, unchanged.*$gdb_prompt $" {
+ pass "$test"
+ }
+ }
+ }
+ }
+
+ # Verify that GDB responds gracefully to the "signal" command with
+ # a missing argument.
+
+ gdb_test "signal" \
+ "Argument required .signal number..*" \
+ "signal without arguments disallowed"
+
+ # Verify that we can successfully send a signal other than 0 to
+ # the inferior. (This probably causes the inferior to run away.
+ # Be prepared to rerun to main for further testing.)
+
+ gdb_test "signal SIGUSR1" "Breakpoint.*handler.*"
+ gdb_test "bt" \
+ "#0 handler .*#1 .signal handler called.*\#2 .*main.*" \
+ "backtrace for SIGUSR1"
}
+
return 0