xref: /openbsd-src/gnu/usr.bin/binutils/gdb/testsuite/gdb.base/siginfo.exp (revision 11efff7f3ac2b3cfeff0c0cddc14294d9b3aca4f) 
1# Copyright 2004 Free Software Foundation, Inc.
2
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 2 of the License, or
6# (at your option) any later version.
7#
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.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program; if not, write to the Free Software
15# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16
17
18# The program siginfo.c creates a backtrace containing a signal
19# handler registered using sigaction's sa_sigaction / SA_SIGINFO.
20# Some OS's (e.g., GNU/Linux) use different signal trampolines for
21# sa_sigaction and sa_handler.
22
23# This test first confirms that GDB can backtrace through the
24# alternative sa_sigaction signal handler, and second that GDB can
25# nexti/stepi out of such a handler.
26
27if [target_info exists gdb,nosignals] {
28    verbose "Skipping signals.exp because of nosignals."
29    continue
30}
31
32if $tracelevel then {
33    strace $tracelevel
34}
35
36set prms_id 0
37set bug_id 0
38
39set testfile siginfo
40set srcfile ${testfile}.c
41set binfile ${objdir}/${subdir}/${testfile}
42if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
43    untested "Couldn't compile ${module}.c"
44    return -1
45}
46
47# get things started
48gdb_exit
49gdb_start
50gdb_reinitialize_dir $srcdir/$subdir
51gdb_load ${binfile}
52
53gdb_test "display/i \$pc"
54
55# Advance to main
56if { ![runto_main] } then {
57    gdb_suppress_tests;
58}
59
60# Pass all the alarms straight through (but verbosely)
61# gdb_test "handle SIGALRM print pass nostop"
62# gdb_test "handle SIGVTALRM print pass nostop"
63# gdb_test "handle SIGPROF print pass nostop"
64
65# Run to the signal handler, validate the backtrace.
66gdb_test "break handler"
67gdb_test "continue" ".* handler .*" "continue to stepi handler"
68send_gdb "bt\n"
69gdb_expect_list "backtrace for nexti" ".*$gdb_prompt $" {
70    "\[\r\n\]+.0 \[^\r\n\]* handler "
71    "\[\r\n\]+.1  .signal handler called."
72    "\[\r\n\]+.2 \[^\r\n\]* main .*"
73}
74
75# Check that GDB can step the inferior back to main
76set test "step out of handler"
77gdb_test_multiple "step" "${test}" {
78    -re "done = 1;.*${gdb_prompt} $" {
79	send_gdb "$i\n"
80	exp_continue
81    }
82    -re "\} .. handler .*${gdb_prompt} $" {
83	send_gdb "step\n"
84	exp_continue
85    }
86    -re "Program exited normally.*${gdb_prompt} $" {
87	kfail gdb/1613 "$test (program exited)"
88    }
89    -re "(while ..done|return 0).*${gdb_prompt} $" {
90	# After stepping out of a function /r signal-handler, GDB will
91	# advance the inferior until it is at the first instruction of
92	# a code-line.  While typically things return to the middle of
93	# the "while..." (and hence GDB advances the inferior to the
94	# "return..." line) it is also possible for the return to land
95	# on the first instruction of "while...".  Accept both cases.
96	pass "$test"
97    }
98}
99