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205 lines
7.1 KiB
Plaintext
205 lines
7.1 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2013-2018 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corp. <christian.himpel@intel.com>
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#
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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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if { [skip_btrace_tests] } {
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unsupported "target does not support record-btrace"
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return -1
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}
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standard_testfile .c .S
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if [prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2" {debug}] {
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return -1
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}
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if ![runto_main] {
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untested "failed to run to main"
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return -1
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}
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# set bp before loop and continue
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set bp_location [gdb_get_line_number "bp.1" $srcfile2]
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gdb_breakpoint $srcfile2:$bp_location
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gdb_continue_to_breakpoint "cont to $bp_location" ".*$srcfile2:$bp_location.*"
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# start btrace
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gdb_test_no_output "record btrace"
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# set bp after loop and continue
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set bp_location [gdb_get_line_number "bp.2" $srcfile2]
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gdb_breakpoint $srcfile2:$bp_location
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gdb_continue_to_breakpoint "cont to $bp_location" ".*$srcfile2:$bp_location.*"
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# The following test cases test if "browsing" through the
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# instruction history works as expected. So for the tests
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# it is necessary to count the number of lines that are
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# shown by the "record instruction-history" command.
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set traced {}
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set testname "determine number of recorded instructions"
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gdb_test_multiple "info record" $testname {
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-re "Active record target: record-btrace\r\n.*\r\nRecorded \(\[0-9\]*\) instructions in \(\[0-9\]*\) functions \\\(0 gaps\\\) for thread 1 .*\\.\r\n$gdb_prompt $" {
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set traced $expect_out(1,string)
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pass $testname
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}
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}
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# we have exactly 11 instructions here
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set message "exactly 11 instructions"
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if { $traced != 11 } {
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fail $message
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} else {
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pass $message
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}
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# test that we see the expected instructions
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gdb_test "record instruction-history 3,7" [multi_line \
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"3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"4\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tdec %eax" \
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"5\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"6\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
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"7\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
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]
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gdb_test "record instruction-history /f 3,+5" [multi_line \
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"3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tdec %eax" \
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"5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
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"7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
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]
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gdb_test "record instruction-history /p 7,-5" [multi_line \
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"3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"4\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tdec %eax" \
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"5\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"6\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
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"7\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
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]
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gdb_test "record instruction-history /pf 3,7" [multi_line \
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"3\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"4\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tdec %eax" \
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"5\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tjmp 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>" \
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"6\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tcmp \\\$0x0,%eax" \
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"7\t 0x\[0-9a-f\]+ <\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r" \
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]
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gdb_test "record instruction-history 3,3" "3\t 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>:\tje 0x\[0-9a-f\]+ <loop\\+\[0-9\]+>\r"
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# the following tests are checking the iterators
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# to avoid lots of regexps, we just check the number of lines that
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# were printed during command execution.
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# test_lines_output returns the output lines from command as a list.
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proc test_lines_output { command message } {
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global gdb_prompt
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set message "test_lines_output: $message"
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gdb_test_multiple $command $message {
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-re "\n\(.*\)\r\n$gdb_prompt $" {
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return [split [string trim $expect_out(1,string)] "\n"]
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}
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}
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}
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# test_lines_length returns the number of lines from command.
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proc test_lines_length { command message } {
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return [llength [test_lines_output $command $message]]
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}
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# show instruction history with unlimited size, we expect to see
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# all $traced instructions
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gdb_test_no_output "set record instruction-history-size 0"
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set message "record instruction-history - unlimited"
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set lines [test_lines_length "record instruction-history 1" $message]
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if { $traced != $lines } {
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fail $message
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} else {
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pass $message
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}
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gdb_test_no_output "set record instruction-history-size $traced"
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set message "record instruction-history - traced"
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set lines [test_lines_length "record instruction-history 1" $message]
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if { $traced != $lines } {
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fail $message
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} else {
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pass $message
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}
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# test that the iterator works
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set history_size 4
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gdb_test_no_output "set record instruction-history-size $history_size"
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set message "browse history forward start"
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set lines [test_lines_length "record instruction-history 1" $message]
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if { $lines != $history_size } {
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fail $message
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} else {
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pass $message
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}
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set message "browse history forward middle"
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set lines [test_lines_length "record instruction-history +" $message]
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if { $lines != $history_size } {
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fail $message
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} else {
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pass $message
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}
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set message "browse history forward last"
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set lines [test_lines_length "record instruction-history +" $message]
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if { $lines != 3 } {
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fail $message
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} else {
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pass $message
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}
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gdb_test "record instruction-history" "At the end of the branch trace record\\." "browse history forward beyond 1"
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# make sure we cannot move further
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gdb_test "record instruction-history" "At the end of the branch trace record\\." "browse history forward beyond 2"
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set message "browse history backward last"
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set lines [test_lines_length "record instruction-history -" $message]
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if { $lines != $history_size } {
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fail $message
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} else {
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pass $message
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}
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set message "browse history backward middle"
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set lines [test_lines_length "record instruction-history -" $message]
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if { $lines != $history_size } {
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fail $message
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} else {
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pass $message
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}
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set message "browse history backward first"
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set lines [test_lines_length "record instruction-history -" $message]
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if { $lines != 3 } {
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fail $message
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} else {
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pass $message
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}
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gdb_test "record instruction-history -" "At the start of the branch trace record\\." "browse history backward beyond 1"
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# make sure we cannot move further back
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gdb_test "record instruction-history -" "At the start of the branch trace record\\." "browse history backward beyond 2"
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