2007-01-09 17:59:20 +00:00
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# Copyright 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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2004-04-21 17:19:28 +00:00
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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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2007-08-23 18:14:19 +00:00
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# the Free Software Foundation; either version 3 of the License, or
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2004-04-21 17:19:28 +00:00
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# (at your option) any later version.
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2007-08-23 18:14:19 +00:00
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#
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2004-04-21 17:19:28 +00:00
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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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2007-08-23 18:14:19 +00:00
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#
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2004-04-21 17:19:28 +00:00
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# You should have received a copy of the GNU General Public License
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2007-08-23 18:14:19 +00:00
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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2004-04-21 17:19:28 +00:00
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# The program sigstep.c creates a very simple backtrace containing one
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2004-08-25 15:26:19 +00:00
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# signal handler and signal trampoline. A flag is set and then the
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# handler returns. This is repeated at infinitum.
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2004-04-21 17:19:28 +00:00
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# This test runs the program up to the signal handler, and then
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2004-08-25 15:26:19 +00:00
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# attempts to step/next out of the handler and back into main.
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2004-04-21 17:19:28 +00:00
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if [target_info exists gdb,nosignals] {
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verbose "Skipping sigstep.exp because of nosignals."
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continue
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}
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if $tracelevel then {
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strace $tracelevel
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}
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set prms_id 0
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set bug_id 0
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set testfile sigstep
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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2007-04-25 15:56:15 +00:00
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untested "Couldn't compile ${srcfile}.c"
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2004-04-21 17:19:28 +00:00
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return -1
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}
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# get things started
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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gdb_test "display/i \$pc"
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# Advance to main
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if { ![runto_main] } then {
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gdb_suppress_tests;
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}
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# Pass all the alarms straight through (but verbosely)
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# gdb_test "handle SIGALRM print pass nostop"
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# gdb_test "handle SIGVTALRM print pass nostop"
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# gdb_test "handle SIGPROF print pass nostop"
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# Run to the signal handler, validate the backtrace.
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gdb_test "break handler"
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gdb_test "continue" ".* handler .*" "continue to stepi handler"
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send_gdb "bt\n"
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gdb_expect_list "backtrace for nexti" ".*$gdb_prompt $" {
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"\[\r\n\]+.0 \[^\r\n\]* handler "
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"\[\r\n\]+.1 .signal handler called."
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"\[\r\n\]+.2 \[^\r\n\]* main .*"
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}
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proc advance { i } {
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global gdb_prompt
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2004-08-25 15:26:19 +00:00
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set prefix "$i from handler"
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2004-04-21 17:19:28 +00:00
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# Get us back into the handler
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2004-08-25 15:26:19 +00:00
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gdb_test "continue" ".* handler .*" "$prefix; continue to handler"
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2004-04-21 17:19:28 +00:00
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2004-08-25 15:26:19 +00:00
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set test "$prefix; leave handler"
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2004-04-21 17:19:28 +00:00
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gdb_test_multiple "$i" "${test}" {
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2006-05-01 16:39:36 +00:00
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-re "Could not insert single-step breakpoint.*$gdb_prompt $" {
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setup_kfail "sparc*-*-openbsd*" gdb/1736
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fail "$test (could not insert single-step breakpoint)"
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}
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2004-04-21 17:19:28 +00:00
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-re "done = 1;.*${gdb_prompt} $" {
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send_gdb "$i\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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-re "\} .. handler .*${gdb_prompt} $" {
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send_gdb "$i\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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-re "Program exited normally.*${gdb_prompt} $" {
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2004-05-11 16:57:04 +00:00
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setup_kfail powerpc-*-*bsd* gdb/1639
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fail "$test (program exited)"
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2004-04-23 16:44:25 +00:00
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}
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2004-08-25 15:26:19 +00:00
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-re "(while ..done|done = 0).*${gdb_prompt} $" {
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2004-04-23 16:44:25 +00:00
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# After stepping out of a function /r signal-handler, GDB will
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# advance the inferior until it is at the first instruction of
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# a code-line. While typically things return to the middle of
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# the "while..." (and hence GDB advances the inferior to the
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# "return..." line) it is also possible for the return to land
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# on the first instruction of "while...". Accept both cases.
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2004-04-21 17:19:28 +00:00
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pass "$test"
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}
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}
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}
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proc advancei { i } {
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global gdb_prompt
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2004-08-25 15:26:19 +00:00
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set prefix "$i from handleri"
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2004-04-21 17:19:28 +00:00
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set program_exited 0
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# Get us back into the handler
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2004-08-25 15:26:19 +00:00
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gdb_test "continue" ".* handler .*" "$prefix; continue to handler"
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2004-04-21 17:19:28 +00:00
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2004-08-25 15:26:19 +00:00
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set test "$prefix; leave handler"
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2004-04-21 17:19:28 +00:00
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gdb_test_multiple "$i" "${test}" {
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2004-08-09 13:16:16 +00:00
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-re "Cannot insert breakpoint 0.*${gdb_prompt} $" {
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# Some platforms use a special read-only page for signal
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# trampolines. We can't set a breakpoint there, and we
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# don't gracefully fall back to single-stepping.
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setup_kfail "i?86-*-linux*" gdb/1736
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2005-07-18 19:23:54 +00:00
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setup_kfail "*-*-openbsd*" gdb/1736
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2004-08-09 13:16:16 +00:00
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fail "$test (could not set breakpoint)"
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return
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}
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2006-05-01 16:39:36 +00:00
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-re "Could not insert single-step breakpoint.*$gdb_prompt $" {
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setup_kfail "sparc*-*-openbsd*" gdb/1736
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fail "$test (could not insert single-step breakpoint)"
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}
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2006-12-31 20:01:25 +00:00
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-re "Breakpoint \[0-9\]*, handler .*${gdb_prompt} $" {
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fail "$test (hit breakpoint again)"
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}
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2004-04-21 17:19:28 +00:00
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-re "done = 1;.*${gdb_prompt} $" {
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send_gdb "$i\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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-re "\} .. handler .*${gdb_prompt} $" {
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send_gdb "$i\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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-re "signal handler called.*${gdb_prompt} $" {
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pass "$test"
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}
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-re "main .*${gdb_prompt} $" {
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fail "$test (in main)"
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}
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2004-05-11 16:57:04 +00:00
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-re "Program exited normally.*${gdb_prompt} $" {
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fail "$test (program exited)"
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set program_exited 1
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}
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2004-04-21 17:19:28 +00:00
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-re "Make handler return now.*y or n. $" {
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send_gdb "y\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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}
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2004-08-25 15:26:19 +00:00
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set test "$prefix; leave signal trampoline"
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2004-04-21 17:19:28 +00:00
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gdb_test_multiple "$i" "${test}" {
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-re "while .*${gdb_prompt} $" {
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pass "$test (in main)"
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}
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-re "signal handler called.*${gdb_prompt} $" {
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send_gdb "$i\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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-re "return .*${gdb_prompt} $" {
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fail "$test (stepped)"
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}
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-re "Make .*frame return now.*y or n. $" {
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send_gdb "y\n"
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2004-09-02 09:47:38 +00:00
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exp_continue -continue_timer
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2004-04-21 17:19:28 +00:00
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}
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2004-05-11 16:57:04 +00:00
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-re "Program exited normally.*${gdb_prompt} $" {
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kfail gdb/1639 "$test (program exited)"
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set program_exited 1
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}
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2004-04-21 17:19:28 +00:00
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-re "The program is not being run.*${gdb_prompt} $" {
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if { $program_exited } {
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# Previously kfailed with an exit
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2004-05-11 16:57:04 +00:00
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pass "$test (the program is not being run)"
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2004-04-21 17:19:28 +00:00
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} else {
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2004-05-11 16:57:04 +00:00
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fail "$test (the program is not being run)"
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2004-04-21 17:19:28 +00:00
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}
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}
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}
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}
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2004-08-25 15:26:19 +00:00
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# Check that we can step/next our way out of a signal handler.
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2004-04-21 17:19:28 +00:00
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advance step
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advancei stepi
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advance next
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advancei nexti
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advancei finish
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advancei return
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2004-08-25 15:26:19 +00:00
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gdb_test "set done = 1" "" "Set done as return will have skipped it"
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# Check that we can step/next our way into / over a signal handler.
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# There are at least the following cases: breakpoint @pc VS breakpoint
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# in handler VS step / next / continue.
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# Use the real-time itimer, as otherwize the process never gets enough
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# time to expire the timer.
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delete_breakpoints
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set infinite_loop [gdb_get_line_number {while (!done)}]
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gdb_test "set itimer = itimer_real"
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gdb_test "break [gdb_get_line_number {done = 0}]"
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# Try stepping when there's a signal pending, and a breakpoint at the
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# handler. Should step into the signal handler.
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proc skip_to_handler { i } {
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global gdb_prompt
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global infinite_loop
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set prefix "$i to handler"
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# Run around to the done
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2004-09-23 20:29:30 +00:00
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# You can add more patterns to this if you need them.
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2004-08-25 15:26:19 +00:00
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set test "$prefix; resync"
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gdb_test_multiple "continue" "$test" {
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-re "done = 0.*$gdb_prompt " {
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pass "$test"
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}
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}
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# Advance to the infinite loop
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gdb_test "advance $infinite_loop" "" "$prefix; advance to infinite loop"
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# Make the signal pending
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sleep 1
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# Insert / remove the handler breakpoint.
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gdb_test "break handler" "" "$prefix; break handler"
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gdb_test "$i" " handler .*" "$prefix; performing $i"
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gdb_test "clear handler" "" "$prefix; clear handler"
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}
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skip_to_handler step
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skip_to_handler next
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skip_to_handler continue
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2004-08-31 14:43:18 +00:00
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# Try stepping when there's a signal pending, and a breakpoint at the
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# handler's entry-point. Should step into the signal handler stopping
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# at the entry-point.
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# Some systems (e.x., GNU/Linux as of 2004-08-30), when delivering a
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# signal, resume the process at the first instruction of the signal
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# handler and not the first instruction of the signal trampoline. The
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# stack is constructed such that the signal handler still appears to
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# have been called by the trampoline code. This test checks that it
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# is possible to stop the inferior, even at that first instruction.
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proc skip_to_handler_entry { i } {
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global gdb_prompt
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global infinite_loop
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set prefix "$i to handler entry"
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# Run around to the done
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2004-09-23 20:29:30 +00:00
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# You can add more patterns to this if you need them.
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2004-08-31 14:43:18 +00:00
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set test "$prefix; resync"
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gdb_test_multiple "continue" "$test" {
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-re "done = 0.*$gdb_prompt " {
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pass "$test"
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}
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}
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# Advance to the infinite loop
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gdb_test "advance $infinite_loop" "" "$prefix; advance to infinite loop"
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# Make the signal pending
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sleep 1
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# Insert / remove the handler breakpoint.
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gdb_test "break *handler" "" "$prefix; break handler"
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gdb_test "$i" " handler .*" "$prefix; performing $i"
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gdb_test "clear *handler" "" "$prefix; clear handler"
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}
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skip_to_handler_entry step
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skip_to_handler_entry next
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skip_to_handler_entry continue
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2004-08-25 15:26:19 +00:00
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# Try stepping when there's a signal pending but no breakpoints.
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# Should skip the handler advancing to the next line.
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proc skip_over_handler { i } {
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global gdb_prompt
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global infinite_loop
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set prefix "$i over handler"
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# Run around to the done
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2004-09-23 20:29:30 +00:00
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# You can add more patterns to this if you need them.
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2004-08-25 15:26:19 +00:00
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set test "$prefix; resync"
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gdb_test_multiple "continue" "$test" {
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-re "done = 0.*$gdb_prompt " {
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pass "$test"
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}
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}
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# Advance to the infinite loop
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gdb_test "advance $infinite_loop" "" "$prefix; advance to infinite loop"
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# Make the signal pending
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sleep 1
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gdb_test "$i" "done = 0.*" "$prefix; performing $i"
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}
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skip_over_handler step
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skip_over_handler next
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skip_over_handler continue
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# Try stepping when there's a signal pending, a pre-existing
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# breakpoint at the current instruction, and a breakpoint in the
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# handler. Should advance to the signal handler.
|
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|
|
proc breakpoint_to_handler { i } {
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|
|
global gdb_prompt
|
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|
|
global infinite_loop
|
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|
|
set prefix "$i on breakpoint, to handler"
|
|
|
|
|
|
|
|
# Run around to the done
|
2004-09-23 20:29:30 +00:00
|
|
|
# You can add more patterns to this if you need them.
|
2004-08-25 15:26:19 +00:00
|
|
|
set test "$prefix; resync"
|
|
|
|
gdb_test_multiple "continue" "$test" {
|
|
|
|
-re "done = 0.*$gdb_prompt " {
|
|
|
|
pass "$test"
|
|
|
|
}
|
|
|
|
}
|
|
|
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|
|
gdb_test "break $infinite_loop" "" "$prefix; break infinite loop"
|
|
|
|
gdb_test "break handler" "" "$prefix; break handler"
|
|
|
|
|
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|
|
# Continue to the infinite loop
|
|
|
|
gdb_test "continue" "while ..done.*" "$prefix; continue to infinite loop"
|
|
|
|
|
|
|
|
# Make the signal pending
|
|
|
|
sleep 1
|
|
|
|
|
|
|
|
setup_kfail "i*86-*-*" gdb/1738
|
|
|
|
gdb_test "$i" " handler .*" "$prefix; performing $i"
|
|
|
|
gdb_test "clear $infinite_loop" "" "$prefix; clear infinite loop"
|
|
|
|
gdb_test "clear handler" "" "$prefix; clear handler"
|
|
|
|
}
|
|
|
|
|
|
|
|
breakpoint_to_handler step
|
|
|
|
breakpoint_to_handler next
|
|
|
|
breakpoint_to_handler continue
|
|
|
|
|
2004-08-31 14:43:18 +00:00
|
|
|
# Try stepping when there's a signal pending, and a breakpoint at the
|
|
|
|
# handler's entry instruction and a breakpoint at the current
|
|
|
|
# instruction. Should step into the signal handler and breakpoint at
|
|
|
|
# that entry instruction.
|
|
|
|
|
|
|
|
# Some systems (e.x., GNU/Linux as of 2004-08-30), when delivering a
|
|
|
|
# signal, resume the process at the first instruction of the signal
|
|
|
|
# handler and not the first instruction of the signal trampoline. The
|
|
|
|
# stack is constructed such that the signal handler still appears to
|
|
|
|
# have been called by the trampoline code. This test checks that it
|
|
|
|
# is possible to stop the inferior, even at that first instruction.
|
|
|
|
|
|
|
|
proc breakpoint_to_handler_entry { i } {
|
|
|
|
global gdb_prompt
|
|
|
|
global infinite_loop
|
|
|
|
set prefix "$i on breakpoint, to handler entry"
|
|
|
|
|
|
|
|
# Run around to the done
|
2004-09-23 20:29:30 +00:00
|
|
|
# You can add more patterns to this if you need them.
|
2004-08-31 14:43:18 +00:00
|
|
|
set test "$prefix; resync"
|
|
|
|
gdb_test_multiple "continue" "$test" {
|
|
|
|
-re "done = 0.*$gdb_prompt " {
|
|
|
|
pass "$test"
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
gdb_test "break $infinite_loop" "" "$prefix; break infinite loop"
|
|
|
|
gdb_test "break *handler" "" "$prefix; break handler"
|
|
|
|
|
|
|
|
# Continue to the infinite loop
|
|
|
|
gdb_test "continue" "while ..done.*" "$prefix; continue to infinite loop"
|
|
|
|
|
|
|
|
# Make the signal pending
|
|
|
|
sleep 1
|
|
|
|
|
|
|
|
setup_kfail "i*86-*-*" gdb/1738
|
|
|
|
gdb_test "$i" " handler .*" "$prefix; performing $i"
|
|
|
|
gdb_test "clear $infinite_loop" "" "$prefix; clear infinite loop"
|
|
|
|
gdb_test "clear *handler" "" "$prefix; clear handler"
|
|
|
|
}
|
|
|
|
|
|
|
|
breakpoint_to_handler_entry step
|
|
|
|
breakpoint_to_handler_entry next
|
|
|
|
breakpoint_to_handler_entry continue
|
|
|
|
|
2004-08-25 15:26:19 +00:00
|
|
|
# Try stepping when there's a signal pending, and a pre-existing
|
|
|
|
# breakpoint at the current instruction, and no breakpoint in the
|
|
|
|
# handler. Should advance to the next line.
|
|
|
|
|
|
|
|
proc breakpoint_over_handler { i } {
|
|
|
|
global gdb_prompt
|
|
|
|
global infinite_loop
|
|
|
|
set prefix "$i on breakpoint, skip handler"
|
|
|
|
|
|
|
|
# Run around to the done
|
2004-09-23 20:29:30 +00:00
|
|
|
# You can add more patterns to this if you need them.
|
2004-08-25 15:26:19 +00:00
|
|
|
set test "$prefix; resync"
|
|
|
|
gdb_test_multiple "continue" "$test" {
|
|
|
|
-re "done = 0.*$gdb_prompt " {
|
|
|
|
pass "$test"
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
gdb_test "break $infinite_loop" "" "$prefix; break infinite loop"
|
|
|
|
|
|
|
|
# Continue to the infinite loop
|
|
|
|
gdb_test "continue" "while ..done.*" "$prefix; continue to infinite loop"
|
|
|
|
|
|
|
|
# Make the signal pending
|
|
|
|
sleep 1
|
|
|
|
|
|
|
|
gdb_test "$i" "done = 0.*" "$prefix; performing $i"
|
|
|
|
gdb_test "clear $infinite_loop" "" "$prefix; clear infinite loop"
|
|
|
|
}
|
|
|
|
|
|
|
|
breakpoint_over_handler step
|
|
|
|
breakpoint_over_handler next
|
|
|
|
breakpoint_over_handler continue
|