269 lines
9.4 KiB
Text
269 lines
9.4 KiB
Text
# Copyright 1997-2016 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if [target_info exists gdb,nosignals] {
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verbose "Skipping signals.exp because of nosignals."
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continue
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}
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standard_testfile .c
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested signals.exp
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return -1
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}
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# Create and source the file that provides information about the compiler
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# used to compile the test case.
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if [get_compiler_info] {
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return -1
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}
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gdb_exit
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gdb_start
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# This will need to be updated as the exact list of signals changes,
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# but I want to test that GDB_SIGNAL_0, GDB_SIGNAL_DEFAULT, and
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# GDB_SIGNAL_UNKNOWN are skipped.
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proc test_handle_all_print {} {
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global timeout
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# Increase timeout and expect input buffer for large output from gdb.
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# Allow blank or TAB as whitespace characters.
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set oldtimeout $timeout
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set timeout [expr "$timeout + 60"]
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verbose "Timeout is now $timeout seconds" 2
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if { ![istarget "*-*-linux*"]
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&& ( [istarget "*-*-gnu*"]
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|| [istarget "*-*-mach*"] ) } {
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gdb_test_sequence "handle all print" "" \
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{
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"Signal\[ \]+Stop\[ \]+Print\[ \]+Pass to program\[ \]+Description\r\nSIGHUP\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Hangup"
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"SIG63\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Real-time event 63"
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"EXC_BREAKPOINT\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Breakpoint"
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}
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} else {
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gdb_test_sequence "handle all print" "" \
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{
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"Signal\[ \]+Stop\[ \]+Print\[ \]+Pass to program\[ \]+Description\r\nSIGHUP\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Hangup"
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"SIG63\[ \]+Yes\[ \]+Yes\[ \]+Yes\[ \]+Real-time event 63"
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}
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}
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set timeout $oldtimeout
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verbose "Timeout restored to $timeout seconds" 2
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}
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test_handle_all_print
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clean_restart $binfile
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if [runto_main] then {
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# Since count is a static variable outside main, runto_main is no
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# guarantee that count will be 0 at this point.
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gdb_test_no_output "set variable count = 0"
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# Test an inferior function call that takes a signal that hits a
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# breakpoint (with a false condition). When GDB tries to run the
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# stack dummy, it will hit the breakpoint at handler. Provided it
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# doesn't lose its cool, this is not a problem, it just has to
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# note that the breakpoint condition is false and keep going.
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# ...setup an always false conditional breakpoint
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gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*"
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gdb_test_no_output "set \$handler_breakpoint_number = \$bpnum"
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# ...setup the signal
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gdb_test "next" "signal \\(SIGUSR1.*" "next to signal"
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gdb_test "next" "alarm \\(.*" "next to alarm #1"
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gdb_test "next" "\\+\\+count; /\\* first \\*/" \
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"next to ++count #1"
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sleep 2
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# ...call the function
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gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = void" \
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"p func1 () #1"
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# ...veryfiy that the cout was updated
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gdb_test "p count" "= 2" "p count #1"
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# Now run the same test but with a breakpoint that does stop.
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# ...set up the breakpoint and signal
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gdb_test "condition \$handler_breakpoint_number" "now unconditional\\."
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gdb_test "next" "alarm \\(.*" "next to alarm #2"
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gdb_test "next" "\\+\\+count; /\\* second \\*/" \
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"next to ++count #2"
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sleep 2
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# ...call the function, which is immediatly interrupted
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gdb_test "p func1 ()" \
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"Breakpoint \[0-9\]*, handler.*
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The program being debugged stopped while in a function called from GDB.*" \
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"p func1 () #2"
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# ...verify the backtrace
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gdb_test "backtrace" \
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"#0 handler.*#1 .signal handler called.*#2 func1.*#3 .function called from gdb.*#4.*main.*" \
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"backtrace from handler when calling func1"
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# ...and continue (silently returning)
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gdb_test "continue" "Continuing\\."
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# ...and then count should have been incremented
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gdb_test "p count" "= 5" "p count #2"
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# Verify that "info signals" produces reasonable output.
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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.*" \
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"info signals"
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# Verify that "info signal" correctly handles an argument, be it a
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# symbolic signal name, or an integer ID.
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gdb_test "info signal SIGTRAP" \
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"SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
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"info signal SIGTRAP"
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gdb_test "info signal 5" \
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"SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
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"info signal 5"
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# Verify that "handle" with illegal arguments is gracefully, um,
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# handled.
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gdb_test "handle" \
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"Argument required .signal to handle.*" \
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"handle without arguments"
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gdb_test "handle SIGFOO" \
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"Unrecognized or ambiguous flag word: \"SIGFOO\".*" \
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"handle with bogus SIG"
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gdb_test "handle SIGHUP frump" \
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"Unrecognized or ambiguous flag word: \"frump\".*" \
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"handle SIG with bogus action"
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# Verify that "handle" can take multiple actions per SIG, and that
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# in the case of conflicting actions, that the rightmost action
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# "wins".
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gdb_test "handle SIGHUP print noprint" \
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"SIGHUP\[ \t\]*No\[ \t\]*No\[ \t\]*Yes\[ \t\]*Hangup.*" \
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"handle SIG with multiple conflicting actions"
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# Exercise all the various actions. (We don't care what the
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# outcome is, this is just to ensure that they all can be parsed.)
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gdb_test "handle SIGHUP print noprint stop nostop ignore noignore pass nopass" \
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"Signal.*" \
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"handle SIG parses all legal actions"
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# Verify that we can "handle" multiple signals at once,
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# interspersed with actions.
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gdb_test "handle SIG63 print SIGILL" \
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"SIGILL\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Illegal instruction.*SIG63\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*Real-time event 63.*" \
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"handle multiple SIGs"
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# Verify that "handle" can take a numeric argument for the signal
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# ID, rather than a symbolic name. (This may not be portable;
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# works for HP-UX.)
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# Also note that this testpoint overrides SIGTRAP, which on HP-UX
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# at least, is used to implement single-steps and breakpoints.
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# Don't expect to run the inferior after this!
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set test "override SIGTRAP"
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gdb_test_multiple "handle 5 nopass" "$test" {
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-re "SIGTRAP is used by the debugger.*Are you sure you want to change it.*y or n.*" {
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gdb_test "y" \
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"SIGTRAP\[ \t\]*Yes\[ \t\]*Yes\[ \t\]*No\[ \t\]*Trace/breakpoint trap.*" \
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"$test"
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}
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}
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# GDB doesn't seem to allow numeric signal IDs larger than 15. Verify
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# that restriction. ??rehrauer: Not sure if this is a feature or a
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# bug, actually. Why is the range 1-15?
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gdb_test "handle 58" \
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"Only signals 1-15 are valid as numeric signals.*Use \"info signals\" for a list of symbolic signals.*" \
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"invalid signal number rejected"
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# Verify that we can accept a signal ID range (number-number).
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# ??rehrauer: This feature isn't documented on the quick-reference
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# card.
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gdb_test "handle 13-15" \
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"SIGPIPE.*SIGALRM.*SIGTERM.*" \
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"handle multiple SIGs via integer range"
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# Bizarrely enough, GDB also allows you to reverse the range stat,
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# stop IDs. E.g., "3-1" and "1-3" mean the same thing. Probably
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# this isn't documented, but the code anticipates it, so we'd best
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# test it...
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gdb_test "handle 15-13" \
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"SIGPIPE.*SIGALRM.*SIGTERM.*" \
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"handle multiple SIGs via reverse integer range"
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# SIGINT is used by the debugger as well. Verify that we can
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# change our minds about changing it.
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set test "override SIGINT"
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gdb_test_multiple "handle SIGINT nopass" "$test" {
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-re "SIGINT is used by the debugger.*Are you sure you want to change it.*y or n.*" {
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gdb_test_multiple "n" "$test" {
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-re "Not confirmed, unchanged.*Signal.*$gdb_prompt $" {
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# "Signal ..." should not be in the output.
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fail gdb/8812 "$test"
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}
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-re "Not confirmed, unchanged.*$gdb_prompt $" {
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pass "$test"
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}
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}
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}
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}
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# Verify that GDB responds gracefully to the "signal" command with
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# a missing argument.
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gdb_test "signal" \
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"Argument required .signal number..*" \
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"signal without arguments disallowed"
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# Verify that we can successfully send a signal other than 0 to
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# the inferior. (This probably causes the inferior to run away.
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# Be prepared to rerun to main for further testing.)
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gdb_test "signal SIGUSR1" "Breakpoint.*handler.*"
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gdb_test "bt" \
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"#0 handler .*#1 .signal handler called.*\#2 .*main.*" \
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"backtrace for SIGUSR1"
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}
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return 0
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