1 # Copyright 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17 # The program sigaltstack.c creates a backtrace containing nested
18 # signal handlers on an alternative stack. This in turn leads to a
19 # non-contiguous (and possibly non-monotonic) backtrace - stack
20 # address jump at the normal-alt stack boundary.
22 # This test confirms that GDB can both backtrace through and finish
25 if [target_info exists gdb,nosignals] {
26 verbose "Skipping signals.exp because of nosignals."
35 set testfile sigaltstack
36 set srcfile ${testfile}.c
37 set binfile ${objdir}/${subdir}/${testfile}
38 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
39 untested "Couldn't compile ${srcfile}.c"
46 gdb_reinitialize_dir $srcdir/$subdir
49 # Pass all the alarms straight through (but verbosely)
50 gdb_test "handle SIGALRM print pass nostop"
51 gdb_test "handle SIGVTALRM print pass nostop"
52 gdb_test "handle SIGPROF print pass nostop"
55 if { ![runto_main] } then {
59 # Stop in handle, when at the inner most level
60 gdb_test "break catcher if level == INNER"
61 gdb_test "continue" ".* catcher .*" "continue to catch"
62 # step off the assignment
67 gdb_expect_list "backtrace" ".*$gdb_prompt $" {
68 "\[\r\n\]+.0 \[^\r\n\]* catcher "
69 "\[\r\n\]+.1 .signal handler called."
70 "\[\r\n\]+.2 \[^\r\n\]* thrower .next_level=INNER"
71 "\[\r\n\]+.3 \[^\r\n\]* catcher "
72 "\[\r\n\]+.4 .signal handler called."
73 "\[\r\n\]+.5 \[^\r\n\]* thrower .next_level=OUTER"
74 "\[\r\n\]+.6 \[^\r\n\]* catcher "
75 "\[\r\n\]+.7 \[^\r\n\]* main .*"
78 proc finish_test { pattern msg } {
81 gdb_test_multiple "finish" $msg {
82 -re "Cannot insert breakpoint 0.*${gdb_prompt} $" {
83 # Some platforms use a special read-only page for signal
84 # trampolines. We can't set a breakpoint there, and we
85 # don't gracefully fall back to single-stepping.
86 setup_kfail gdb/1736 "i?86-*-linux*"
87 setup_kfail gdb/1736 "*-*-openbsd*"
88 fail "$msg (could not set breakpoint)"
90 -re "$pattern.*${gdb_prompt} $" {
97 finish_test "signal handler called." "finish from catch LEAF"
98 finish_test "thrower .next_level=INNER, .*" "finish to throw INNER"
99 finish_test "catcher .*" "finish to catch INNER"
100 finish_test "signal handler called.*" "finish from catch INNER"
101 finish_test "thrower .next_level=OUTER, .*" "finish to OUTER"
102 finish_test "catcher .*" "finish to catch MAIN"
103 finish_test "main .*" "finish to MAIN"