1 # Copyright 2004-2017 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 siginfo.c creates a backtrace containing a signal
18 # handler registered using sigaction's sa_sigaction / SA_SIGINFO.
19 # Some OS's (e.g., GNU/Linux) use different signal trampolines for
20 # sa_sigaction and sa_handler.
22 # This test first confirms that GDB can backtrace through the
23 # alternative sa_sigaction signal handler, and second that GDB can
24 # nexti/stepi out of such a handler.
26 if [target_info exists gdb,nosignals] {
27 verbose "Skipping siginfo.exp because of nosignals."
34 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
38 gdb_test "display/i \$pc"
41 if { ![runto_main] } then {
45 # Pass all the alarms straight through (but verbosely)
46 # gdb_test "handle SIGALRM print pass nostop"
47 # gdb_test "handle SIGVTALRM print pass nostop"
48 # gdb_test "handle SIGPROF print pass nostop"
50 # Run to the signal handler, validate the backtrace.
51 gdb_test "break handler"
52 gdb_test "continue" ".* handler .*" "continue to stepi handler"
53 gdb_test_sequence "bt" "backtrace for nexti" {
54 "\[\r\n\]+.0 \[^\r\n\]* handler "
55 "\[\r\n\]+.1 .signal handler called."
56 "\[\r\n\]+.2 \[^\r\n\]* main "
59 # Check that GDB can step the inferior back to main
60 set test "step out of handler"
61 gdb_test_multiple "step" "${test}" {
62 -re "Could not insert single-step breakpoint.*$gdb_prompt $" {
63 setup_kfail gdb/8841 sparc*-*-openbsd*
64 fail "$test (could not insert single-step breakpoint)"
66 -re "Cannot insert breakpoint.*Cannot access memory.*$gdb_prompt $" {
67 setup_kfail gdb/8841 "nios2*-*-linux*"
68 fail "$test (could not insert single-step breakpoint)"
70 -re "done = 1;.*${gdb_prompt} $" {
74 -re "\} .. handler .*${gdb_prompt} $" {
78 -re "$inferior_exited_re normally.*${gdb_prompt} $" {
79 kfail gdb/1613 "$test (program exited)"
81 -re "(while ..done|return 0).*${gdb_prompt} $" {
82 # After stepping out of a function /r signal-handler, GDB will
83 # advance the inferior until it is at the first instruction of
84 # a code-line. While typically things return to the middle of
85 # the "while..." (and hence GDB advances the inferior to the
86 # "return..." line) it is also possible for the return to land
87 # on the first instruction of "while...". Accept both cases.