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78cef34b AC |
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 | ||
27 | if [target_info exists gdb,nosignals] { | |
28 | verbose "Skipping signals.exp because of nosignals." | |
29 | continue | |
30 | } | |
31 | ||
32 | if $tracelevel then { | |
33 | strace $tracelevel | |
34 | } | |
35 | ||
36 | set prms_id 0 | |
37 | set bug_id 0 | |
38 | ||
39 | set testfile siginfo | |
40 | set srcfile ${testfile}.c | |
41 | set binfile ${objdir}/${subdir}/${testfile} | |
42 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
43 | untested "Couldn't compile ${module}.c" | |
44 | return -1 | |
45 | } | |
46 | ||
47 | # get things started | |
48 | gdb_exit | |
49 | gdb_start | |
50 | gdb_reinitialize_dir $srcdir/$subdir | |
51 | gdb_load ${binfile} | |
52 | ||
53 | gdb_test "display/i \$pc" | |
54 | ||
55 | # Advance to main | |
56 | if { ![runto_main] } then { | |
57 | gdb_suppress_tests; | |
58 | } | |
59 | ||
60 | # Pass all the alarms straight through (but verbosely) | |
61 | # gdb_test "handle SIGALRM print pass nostop" | |
62 | # gdb_test "handle SIGVTALRM print pass nostop" | |
63 | # gdb_test "handle SIGPROF print pass nostop" | |
64 | ||
65 | # Run to the signal handler, validate the backtrace. | |
66 | gdb_test "break handler" | |
67 | gdb_test "continue" ".* handler .*" "continue to stepi handler" | |
68 | send_gdb "bt\n" | |
69 | gdb_expect_list "backtrace for nexti" ".*$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 | |
76 | set test "step out of handler" | |
77 | gdb_test_multiple "step" "${test}" { | |
78 | -re "done = 1;.*${gdb_prompt} $" { | |
79 | send_gdb "$i\n" | |
80 | exp_continue | |
81 | } | |
82 | -re "\} .. handler .*${gdb_prompt} $" { | |
83 | send_gdb "step\n" | |
84 | exp_continue | |
85 | } | |
61bcae62 AC |
86 | -re "Program exited normally.*${gdb_prompt} $" { |
87 | kfail gdb/1613 "$test (program exited)" | |
88 | } | |
89 | -re "(while ..done|return 0).*${gdb_prompt} $" { | |
90 | # After stepping out of a function /r signal-handler, GDB will | |
91 | # advance the inferior until it is at the first instruction of | |
92 | # a code-line. While typically things return to the middle of | |
93 | # the "while..." (and hence GDB advances the inferior to the | |
94 | # "return..." line) it is also possible for the return to land | |
95 | # on the first instruction of "while...". Accept both cases. | |
78cef34b AC |
96 | pass "$test" |
97 | } | |
98 | } |