# Copyright 1997-2015 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 . if [target_info exists gdb,nosignals] { verbose "Skipping signals.exp because of nosignals." continue } standard_testfile .c if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { untested signals.exp return -1 } # Create and source the file that provides information about the compiler # used to compile the test case. if [get_compiler_info] { return -1 } if {$hp_cc_compiler} { set void 0 } else { set void void } gdb_exit gdb_start # This will need to be updated as the exact list of signals changes, # but I want to test that GDB_SIGNAL_0, GDB_SIGNAL_DEFAULT, and # GDB_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 + 60"] verbose "Timeout is now $timeout seconds" 2 if { ![istarget "*-*-linux*"] && ( [istarget "*-*-gnu*"] || [istarget "*-*-mach*"] ) } { gdb_test_sequence "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_sequence "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 clean_restart $binfile if [runto_main] then { # Since count is a static variable outside main, runto_main is no # guarantee that count will be 0 at this point. gdb_test_no_output "set variable count = 0" # 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 an always false conditional breakpoint gdb_test "break handler if 0" "Breakpoint \[0-9\]+ .*" gdb_test_no_output "set \$handler_breakpoint_number = \$bpnum" # ...setup the signal 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 # ...call the function gdb_test "p func1 ()" "^p func1 \\(\\)\r\n.\[0-9\]* = $void" \ "p func1 () #1" # ...veryfiy that the cout was updated gdb_test "p count" "= 2" "p count #1" # Now run the same test but with a breakpoint that does stop. # ...set up the breakpoint and signal 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 # ...call the function, which is immediatly interrupted gdb_test "p func1 ()" \ "Breakpoint \[0-9\]*, handler.* 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 $" { # "Signal ..." should not be in the output. fail gdb/8812 "$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