From 78cef34b48f85a5a79675fe0760e0ce17d0d7d25 Mon Sep 17 00:00:00 2001 From: Andrew Cagney Date: Thu, 15 Apr 2004 21:14:00 +0000 Subject: [PATCH] 2004-04-15 Andrew Cagney * gdb.base/siginfo.c: New file. * gdb.base/siginfo.exp: New file. --- gdb/testsuite/ChangeLog | 5 ++ gdb/testsuite/gdb.base/siginfo.c | 68 ++++++++++++++++++++++ gdb/testsuite/gdb.base/siginfo.exp | 91 ++++++++++++++++++++++++++++++ 3 files changed, 164 insertions(+) create mode 100644 gdb/testsuite/gdb.base/siginfo.c create mode 100644 gdb/testsuite/gdb.base/siginfo.exp diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 278e50e8a39..319c6a0c617 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2004-04-15 Andrew Cagney + + * gdb.base/siginfo.c: New file. + * gdb.base/siginfo.exp: New file. + 2004-04-12 J. Brobecker * gdb.base/sep.exp: Fix typo in comment. diff --git a/gdb/testsuite/gdb.base/siginfo.c b/gdb/testsuite/gdb.base/siginfo.c new file mode 100644 index 00000000000..b2a758b0a1f --- /dev/null +++ b/gdb/testsuite/gdb.base/siginfo.c @@ -0,0 +1,68 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2004 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 2 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#include +#include +#include + +static volatile int done; + +#ifdef SA_SIGINFO +static void /* HANDLER */ +handler (int sig, siginfo_t *info, void *context) +{ + done = 1; +} /* handler */ +#else +static void +handler (int sig) +{ + done = 1; +} /* handler */ +#endif + +main () +{ + /* Set up the signal handler. */ + { + struct sigaction action; + memset (&action, 0, sizeof (action)); +#ifdef SA_SIGINFO + action.sa_sigaction = handler; + action.sa_flags |= SA_SIGINFO; +#else + action.sa_handler = handler; +#endif + sigaction (SIGVTALRM, &action, NULL); + } + + /* Set up a one-off timer. A timer, rather than SIGSEGV, is used as + after a timer handler finishes the interrupted code can safely + resume. */ + { + struct itimerval itime; + memset (&itime, 0, sizeof (itime)); + itime.it_value.tv_usec = 250 * 1000; + setitimer (ITIMER_VIRTUAL, &itime, NULL); + } + /* Wait. */ + while (!done); + return 0; +} /* main */ diff --git a/gdb/testsuite/gdb.base/siginfo.exp b/gdb/testsuite/gdb.base/siginfo.exp new file mode 100644 index 00000000000..f335bc73999 --- /dev/null +++ b/gdb/testsuite/gdb.base/siginfo.exp @@ -0,0 +1,91 @@ +# Copyright 2004 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 2 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, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + +# The program siginfo.c creates a backtrace containing a signal +# handler registered using sigaction's sa_sigaction / SA_SIGINFO. +# Some OS's (e.g., GNU/Linux) use different signal trampolines for +# sa_sigaction and sa_handler. + +# This test first confirms that GDB can backtrace through the +# alternative sa_sigaction signal handler, and second that GDB can +# nexti/stepi out of such a handler. + +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 + +set testfile siginfo +set srcfile ${testfile}.c +set binfile ${objdir}/${subdir}/${testfile} +if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { + untested "Couldn't compile ${module}.c" + return -1 +} + +# get things started +gdb_exit +gdb_start +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +gdb_test "display/i \$pc" + +# Advance to main +if { ![runto_main] } then { + gdb_suppress_tests; +} + +# Pass all the alarms straight through (but verbosely) +# gdb_test "handle SIGALRM print pass nostop" +# gdb_test "handle SIGVTALRM print pass nostop" +# gdb_test "handle SIGPROF print pass nostop" + +# Run to the signal handler, validate the backtrace. +gdb_test "break handler" +gdb_test "continue" ".* handler .*" "continue to stepi handler" +send_gdb "bt\n" +gdb_expect_list "backtrace for nexti" ".*$gdb_prompt $" { + "\[\r\n\]+.0 \[^\r\n\]* handler " + "\[\r\n\]+.1 .signal handler called." + "\[\r\n\]+.2 \[^\r\n\]* main .*" +} + +# Check that GDB can step the inferior back to main +set test "step out of handler" +gdb_test_multiple "step" "${test}" { + -re "done = 1;.*${gdb_prompt} $" { + send_gdb "$i\n" + exp_continue + } + -re "\} .. handler .*${gdb_prompt} $" { + send_gdb "step\n" + exp_continue + } + -re "return 0.*${gdb_prompt} $" { + # Stepping out of a function GDB advances the inferior to the + # start of the next line + pass "$test" + } +} -- 2.30.2