1# Copyright 2009-2020 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# This file is part of the GDB testsuite.  It tests precord debugging
17# with shared libraries and a logfile.
18
19# This test suitable only for process record-replay
20if ![supports_process_record] {
21    return
22}
23if {[skip_shlib_tests]} {
24    return
25}
26
27standard_testfile solib-reverse.c
28set precsave [standard_output_file solib.precsave]
29set lib1file "shr1"
30set lib1src  ${lib1file}.c
31set library1 [standard_output_file ${lib1file}.sl]
32set lib2file "shr2"
33set lib2src  ${lib2file}.c
34set library2 [standard_output_file ${lib2file}.sl]
35
36if [get_compiler_info] {
37    return -1
38}
39
40# Compile the first without debug info so that
41# stepping and reverse stepping doesn't end up inside them.
42if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib1src} ${library1} ""] != "" } {
43    untested "failed to compile shared library 1"
44    return -1
45}
46
47if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib2src} ${library2} "debug"] != "" } {
48    untested "failed to compile shared library 2"
49    return -1
50}
51
52set exec_opts [list debug shlib=${library1} shlib=${library2}]
53
54# Attempt to prevent -Wl,-z,relro which may happen by default with some
55# toolchain configurations.  Due to PR corefiles/11804 GDB will then produce
56# invalid core file.
57
58if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable \
59		     [concat $exec_opts additional_flags=-Wl,-z,norelro]] != ""
60     && [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $exec_opts] != "" } {
61    untested "failed to compile"
62    return -1
63}
64
65# Start with a fresh gdb.
66
67gdb_exit
68gdb_start
69
70# Note: The test previously did "set debug-file-directory" to (try to)
71# ensure the debug info for the dynamic loader and libc weren't found.
72# This doesn't work if the debug info is in the .debug subdirectory.
73# Avoiding debug info for system libraries is not germaine to this test
74# and is no longer attempted.  Instead, the test does not make assumptions
75# about whether the debug info is present or not.
76
77gdb_reinitialize_dir $srcdir/$subdir
78gdb_load ${binfile}
79gdb_load_shlib $library1
80gdb_load_shlib $library2
81
82runto main
83
84if [supports_process_record] {
85    # Activate process record/replay
86    gdb_test_no_output "record" "turn on process record"
87}
88
89set end_of_main [gdb_get_line_number "end of main" ]
90gdb_test "break $end_of_main" \
91    "Breakpoint $decimal at .*$srcfile, line $end_of_main\." \
92    "breakpoint at end of main"
93
94gdb_test_multiple "continue" "run to end of main" {
95    -wrap -re "Breakpoint .* end of main .*" {
96	pass $gdb_test_name
97    }
98    -wrap -re "Process record does not support instruction 0xfae64 at.*" {
99	kfail "gdb/25038" $gdb_test_name
100	return -1
101    }
102}
103
104gdb_test "record save $precsave" \
105    "Saved core file $precsave with execution log\."  \
106    "save process recfile"
107
108gdb_test "kill" "" "kill process, prepare to debug log file" \
109    "Kill the program being debugged\\? \\(y or n\\) " "y"
110
111gdb_test "record restore $precsave" \
112    "Restored records from core file .*" \
113    "reload core file"
114
115#
116# Test reverse-step over undebuggable solib functions.
117#
118
119# Run forward past some solib function calls.
120
121set end_part_one [gdb_get_line_number " end part one" "$srcfile"]
122set end_part_two [gdb_get_line_number " end part two" "$srcfile"]
123gdb_test "until $end_part_one" " end part one.*" "run until end part one"
124
125gdb_test "reverse-step" " shr1 three .*" "reverse-step third shr1"
126gdb_test "reverse-step" " shr1 two .*"   "reverse-step second shr1"
127gdb_test "reverse-step" " shr1 one .*"   "reverse-step first shr1"
128
129gdb_test "reverse-step" " generic statement.*" "reverse-step generic"
130
131
132#
133# Test reverse-next over undebuggable solib functions.
134#
135
136# Run forward again...
137
138gdb_test "until $end_part_one" " end part one.*" "forward to end part one"
139
140gdb_test "reverse-next" " shr1 three .*" "reverse-next third shr1"
141gdb_test "reverse-next" " shr1 two .*"   "reverse-next second shr1"
142gdb_test "reverse-next" " shr1 one .*"   "reverse-next first shr1"
143
144gdb_test "reverse-next" " generic statement.*" "reverse-next generic"
145
146
147#
148# Test reverse-step into debuggable solib function
149#
150
151gdb_test_multiple "reverse-step" "reverse-step into solib function one" {
152    -re -wrap "middle part two.*" {
153	send_gdb "reverse-step\n"
154	exp_continue
155    }
156    -re -wrap "${lib2src}.*" {
157	pass $gdb_test_name
158    }
159}
160gdb_test "reverse-step" "return 2.x.*" "reverse-step within solib function one"
161gdb_test "reverse-step" " middle part two.*" "reverse-step back to main one"
162
163gdb_test_multiple "reverse-step" "reverse-step into solib function two" {
164    -re -wrap "begin part two.*" {
165	send_gdb "reverse-step\n"
166	exp_continue
167    }
168    -re -wrap "${lib2src}.*" {
169	pass $gdb_test_name
170    }
171}
172gdb_test "reverse-step" "return 2.x.*" "reverse-step within solib function two"
173gdb_test "reverse-step" " begin part two.*" "reverse-step back to main two"
174
175#
176# Test reverse-next over debuggable solib function
177#
178
179gdb_test "until $end_part_two" " end part two.*" "run until end part two"
180
181gdb_test "reverse-next" " middle part two.*" "reverse-next over solib function one"
182gdb_test_multiple "reverse-next" "reverse-next over solib function two" {
183    -re -wrap "middle part two.*" {
184	send_gdb "reverse-next\n"
185	exp_continue
186    }
187    -re -wrap " begin part two.*" {
188	pass $gdb_test_name
189    }
190}
191