1# Copyright 2008-2020 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 3 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, see <http://www.gnu.org/licenses/>.
15
16# Test inferior resumption after discarding a hand-called function.
17# There are two things to test.
18# 1) Inferior stops normally.  Upon resumption it should continue normally,
19#    regardless of whatever signal the hand-called function got.
20# 2) Inferior is stopped at a signal.  Upon resumption it should continue
21#    with that signal, regardless of whatever the hand-called function did.
22
23if [target_info exists gdb,nosignals] {
24    verbose "Skipping call-signal-resume.exp because of nosignals."
25    continue
26}
27
28
29standard_testfile call-signals.c
30
31if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
32     untested "failed to compile"
33     return -1
34}
35
36# Some targets can't do function calls, so don't even bother with this
37# test.
38if [target_info exists gdb,cannot_call_functions] {
39    unsupported "this target can not call functions"
40    continue
41}
42
43proc get_dummy_frame_number { } {
44    global gdb_prompt
45
46    gdb_test_multiple "bt" "backtrace" {
47	-re "#(\[0-9\]*) *<function called from gdb>.*$gdb_prompt $" {
48	    return $expect_out(1,string)
49	}
50    }
51    return ""
52}
53
54# Start with a fresh gdb.
55
56clean_restart ${binfile}
57
58if { ![runto_main] } {
59    fail "can't run to main"
60    return 0
61}
62
63gdb_test "break stop_one" "Breakpoint \[0-9\]* at .*"
64gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, stop_one.*" \
65    "continue to breakpoint at stop_one"
66
67# Call function (causing the program to get a signal), and see if gdb handles
68# it properly.
69if {[gdb_test "call gen_signal ()"  \
70	 "\[\r\n\]*The program being debugged was signaled.*" \
71	 "inferior function call signaled"] != 0} {
72    return 0
73}
74
75set frame_number [get_dummy_frame_number]
76if { "$frame_number" == "" } {
77    fail "dummy stack frame number"
78    setup_xfail "*-*-*"
79} else {
80    pass "dummy stack frame number"
81}
82
83# Pop the dummy frame.
84gdb_test "frame $frame_number" ".*"
85gdb_test_no_output "set confirm off"
86gdb_test "return" ""
87
88# Verify there are no remains of the dummy frame.
89gdb_test_no_output "maintenance print dummy-frames"
90set test "maintenance info breakpoints"
91gdb_test_multiple $test $test {
92    -re " call dummy .*\r\n$gdb_prompt $" {
93	fail $test
94    }
95    -re "\r\n$gdb_prompt $" {
96	pass $test
97    }
98}
99
100# Resume execution, the program should continue without any signal.
101
102gdb_test "break stop_two" "Breakpoint \[0-9\]* at .*"
103gdb_test "continue" "Breakpoint \[0-9\]*, stop_two.*" \
104    "continue to breakpoint at stop_two"
105
106# Continue again, we should get a signal.
107
108gdb_test "continue" "Program received signal .*" \
109    "continue to receipt of signal"
110
111# Hand call another function that prematurely stops,
112# then manually pop the dummy stack frame.
113
114gdb_test "break null_hand_call" "Breakpoint \[0-9\]* at .*"
115gdb_test "call null_hand_call ()" "Breakpoint \[0-9\]*, null_hand_call.*" \
116    "null_hand_call"
117
118set frame_number [get_dummy_frame_number]
119if { "$frame_number" == "" } {
120    fail "dummy stack frame number"
121    setup_xfail "*-*-*"
122    # Need something.
123    set frame_number 0
124} else {
125    pass "dummy stack frame number"
126}
127
128# Pop the dummy frame.
129gdb_test "frame $frame_number" ".*"
130gdb_test_no_output "set confirm off"
131gdb_test "return" ""
132
133# Continue again, this time we should get to the signal handler.
134
135gdb_test "break handle_signal" "Breakpoint \[0-9\]* at .*"
136gdb_test "continue" "Breakpoint \[0-9\]*, handle_signal.*" \
137    "continue to breakpoint at handle_signal"
138
139# Continue one last time, the program should exit normally.
140
141gdb_test "continue" "$inferior_exited_re normally." \
142    "continue to program exit"
143
144return 0
145