1 # Copyright 2004-2024 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 require {!target_info exists gdb,nosignals}
30 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
31 untested "failed to compile"
36 clean_restart ${binfile}
38 # Pass all the alarms straight through (but verbosely)
39 gdb_test "handle SIGALRM print pass nostop"
40 gdb_test "handle SIGVTALRM print pass nostop"
41 gdb_test "handle SIGPROF print pass nostop"
48 # Stop in handle, when at the inner most level
49 gdb_test "break catcher if level == INNER"
50 gdb_test "continue" ".* catcher .*" "continue to catch"
51 # step off the assignment
55 gdb_test_sequence "bt" "backtrace" {
56 "\[\r\n\]+.0 \[^\r\n\]* catcher "
57 "\[\r\n\]+.1 .signal handler called."
58 "\[\r\n\]+.2 \[^\r\n\]* thrower .next_level=INNER"
59 "\[\r\n\]+.3 \[^\r\n\]* catcher "
60 "\[\r\n\]+.4 .signal handler called."
61 "\[\r\n\]+.5 \[^\r\n\]* thrower .next_level=OUTER"
62 "\[\r\n\]+.6 \[^\r\n\]* catcher "
63 "\[\r\n\]+.7 \[^\r\n\]* main "
66 proc finish_test { pattern msg } {
69 gdb_test_multiple "finish" $msg {
70 -re "Cannot insert breakpoint 0.*${gdb_prompt} $" {
71 # Some platforms use a special read-only page for signal
72 # trampolines. We can't set a breakpoint there, and we
73 # don't gracefully fall back to single-stepping.
74 setup_kfail gdb/8841 "i?86-*-linux*"
75 setup_kfail gdb/8841 "*-*-openbsd*"
76 fail "$msg (could not set breakpoint)"
78 -re "$pattern.*${gdb_prompt} $" {
85 finish_test "signal handler called." "finish from catch LEAF"
86 finish_test "thrower .next_level=INNER, .*" "finish to throw INNER"
87 finish_test "catcher .*" "finish to catch INNER"
88 finish_test "signal handler called.*" "finish from catch INNER"
89 finish_test "thrower .next_level=OUTER, .*" "finish to OUTER"
90 finish_test "catcher .*" "finish to catch MAIN"
91 finish_test "main .*" "finish to MAIN"