153 lines
4.1 KiB
Plaintext
153 lines
4.1 KiB
Plaintext
# Copyright 2014-2017 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test the compare-sections command.
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standard_testfile
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug}]} {
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return -1
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}
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# Run the compare-sections command along with any options as specified
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# by OPTIONS, and check that no mismatch is found.
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proc compare_sections { {options ""} } {
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global gdb_prompt
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if {$options != ""} {
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set command "compare-sections $options"
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} else {
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set command "compare-sections"
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}
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set test $command
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gdb_test_multiple $command $test {
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-re "MIS-MATCHED.*$gdb_prompt $" {
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fail $test
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}
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-re "warning.*One or more sections.*does not match.*loaded file.*$gdb_prompt $" {
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fail $test
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}
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-re "Section.*matched.*$gdb_prompt $" {
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pass $test
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}
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}
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}
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gdb_file_cmd $binfile
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with_test_prefix "after file" {
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# Before starting the target, we're just comparing the
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# executable's sections against themselves... This should never
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# find a mismatch.
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compare_sections
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compare_sections "-r"
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}
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# Load the file into the target.
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gdb_reload
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with_test_prefix "after reload" {
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# We're presumabily still stopped at the entry point. All
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# sections should match.
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compare_sections
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compare_sections "-r"
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}
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# Try comparing just one section. Assume there's a .text section,
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# which is a pretty safe bet.
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set command "compare-sections .text"
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set command_re [string_to_regexp $command]
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set test $command
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gdb_test_multiple $command $test {
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-re "^$command_re\r\nSection .text, range $hex -- $hex. matched\.\r\n$gdb_prompt $" {
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pass $test
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}
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}
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# Now get past startup code.
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if ![runto_main] then {
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fail "can't run to main"
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return 0
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}
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with_test_prefix "after run to main" {
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# Assume all targets' startup code changes some loaded variable.
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gdb_test "compare-sections" \
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"MIS-MATCHED.*warning.*One or more sections.*does not match.*loaded file"
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# Assume startup code doesn't change read-only sections.
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compare_sections "-r"
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}
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# Now test that "compare-sections -r" works as expected. Look for an
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# address in a read-only section, patch it, and check that
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# "compare-sections -r" detects a mismatch.
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with_test_prefix "read-only" {
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set ro_address 0
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set has_ro_sections 0
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set test "list read-only sections"
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gdb_test_multiple "maint info sections READONLY" $test {
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-re "($hex)->$hex at $hex. \[^\r\n\]* READONLY.*$gdb_prompt $" {
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set ro_address $expect_out(1,string)
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set has_ro_sections 1
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pass $test
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}
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-re "$gdb_prompt $" {
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pass $test
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}
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}
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if {!$has_ro_sections} {
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unsupported "no read-only sections"
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return -1;
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}
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set orig -1
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set test "get value of read-only section"
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gdb_test_multiple "print /d *(unsigned char *) $ro_address" "$test" {
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-re " = (\[0-9\]*).*$gdb_prompt $" {
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set orig $expect_out(1,string)
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pass "$test"
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}
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}
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if {$orig == -1} {
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untested "couldn't read address of read-only section"
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return -1
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}
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# Come up with different value.
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set patch [expr 255 - $orig]
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# Write PATCH to memory.
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set written -1
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set test "corrupt read-only section"
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gdb_test_multiple "print /d *(unsigned char *) $ro_address = $patch" "$test" {
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-re " = (\[0-9\]*).*$gdb_prompt $" {
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set written $expect_out(1,string)
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pass "$test"
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}
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}
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if { $written != $patch } {
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unsupported "can't patch read-only section"
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return -1
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}
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gdb_test "compare-sections -r" \
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"MIS-MATCHED.*warning.*One or more sections.*does not match.*loaded file.*"
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}
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