1 # Copyright 2014-2016 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/>.
16 # Test the compare-sections command.
20 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug}]} {
24 # Run the compare-sections command along with any options as specified
25 # by OPTIONS, and check that no mismatch is found.
26 proc compare_sections { {options ""} } {
30 set command "compare-sections $options"
32 set command "compare-sections"
35 gdb_test_multiple $command $test {
36 -re "MIS-MATCHED.*$gdb_prompt $" {
39 -re "warning.*One or more sections.*does not match.*loaded file.*$gdb_prompt $" {
42 -re "Section.*matched.*$gdb_prompt $" {
50 with_test_prefix "after file" {
51 # Before starting the target, we're just comparing the
52 # executable's sections against themselves... This should never
58 # Load the file into the target.
61 with_test_prefix "after reload" {
62 # We're presumabily still stopped at the entry point. All
63 # sections should match.
68 # Try comparing just one section. Assume there's a .text section,
69 # which is a pretty safe bet.
70 set command "compare-sections .text"
71 set command_re [string_to_regexp $command]
73 gdb_test_multiple $command $test {
74 -re "^$command_re\r\nSection .text, range $hex -- $hex. matched\.\r\n$gdb_prompt $" {
79 # Now get past startup code.
80 if ![runto_main] then {
81 fail "Can't run to main"
85 with_test_prefix "after run to main" {
86 # Assume all targets' startup code changes some loaded variable.
87 gdb_test "compare-sections" \
88 "MIS-MATCHED.*warning.*One or more sections.*does not match.*loaded file"
90 # Assume startup code doesn't change read-only sections.
94 # Now test that "compare-sections -r" works as expected. Look for an
95 # address in a read-only section, patch it, and check that
96 # "compare-sections -r" detects a mismatch.
97 with_test_prefix "read-only" {
100 set test "list read-only sections"
101 gdb_test_multiple "maint info sections READONLY" $test {
102 -re "($hex)->$hex at $hex. \[^\r\n\]* READONLY.*$gdb_prompt $" {
103 set ro_address $expect_out(1,string)
104 set has_ro_sections 1
107 -re "$gdb_prompt $" {
112 if {!$has_ro_sections} {
113 unsupported "no read-only sections"
119 set test "get value of read-only section"
120 gdb_test_multiple "print /d *(unsigned char *) $ro_address" "$test" {
121 -re " = (\[0-9\]*).*$gdb_prompt $" {
122 set orig $expect_out(1,string)
128 untested "couldn't read address of read-only section"
132 # Come up with different value.
133 set patch [expr 255 - $orig]
135 # Write PATCH to memory.
137 set test "corrupt read-only section"
138 gdb_test_multiple "print /d *(unsigned char *) $ro_address = $patch" "$test" {
139 -re " = (\[0-9\]*).*$gdb_prompt $" {
140 set written $expect_out(1,string)
145 if { $written != $patch } {
146 unsupported "can't patch read-only section"
150 gdb_test "compare-sections -r" \
151 "MIS-MATCHED.*warning.*One or more sections.*does not match.*loaded file.*"