| # Copyright 2012-2017 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| # Step over breakpoints with displaced stepping on, against Valgrind. |
| # We can't really use displaced stepping with Valgrind, so what this |
| # really tests is that GDB falls back to in-line stepping |
| # automatically instead of getting stuck or crashing. |
| |
| if [is_remote target] { |
| # The test always runs locally. |
| return 0 |
| } |
| |
| standard_testfile .c |
| if {[build_executable "failed to build" $testfile $srcfile {debug}] == -1} { |
| return -1 |
| } |
| |
| set test "spawn valgrind" |
| set cmd "valgrind --vgdb-error=0 $binfile" |
| set res [remote_spawn host $cmd] |
| if { $res < 0 || $res == "" } { |
| verbose -log "Spawning $cmd failed." |
| unsupported $test |
| return -1 |
| } |
| pass $test |
| # Declare GDB now as running. |
| set gdb_spawn_id $res |
| |
| # GDB started by vgdb stops already after the startup is executed, like with |
| # non-extended gdbserver. It is also not correct to run/attach the inferior. |
| set use_gdb_stub 1 |
| |
| set test "valgrind started" |
| # The trailing '.' differs for different memcheck versions. |
| gdb_test_multiple "" $test { |
| -re "Memcheck, a memory error detector\\.?\r\n" { |
| pass $test |
| } |
| -re "valgrind: failed to start tool 'memcheck' for platform '.*': No such file or directory" { |
| unsupported $test |
| return -1 |
| } |
| -re "valgrind: wrong ELF executable class" { |
| unsupported $test |
| return -1 |
| } |
| -re "command not found" { |
| # The spawn succeeded, but then valgrind was not found - e.g. if |
| # we spawned SSH to a remote system. |
| unsupported $test |
| return -1 |
| } |
| -re "valgrind: Bad option.*--vgdb-error=0" { |
| # valgrind is not >= 3.7.0. |
| unsupported $test |
| return -1 |
| } |
| } |
| |
| set test "vgdb prompt" |
| # The trailing '.' differs for different memcheck versions. |
| gdb_test_multiple "" $test { |
| -re " (target remote | \[^\r\n\]*/vgdb \[^\r\n\]*)\r\n" { |
| set vgdbcmd $expect_out(1,string) |
| pass $test |
| } |
| } |
| |
| # Do not kill valgrind. |
| set valgrind_pid [exp_pid -i [board_info host fileid]] |
| unset gdb_spawn_id |
| set board [host_info name] |
| unset_board_info fileid |
| |
| clean_restart $testfile |
| |
| # Make sure we're disconnected, in case we're testing with the |
| # native-extended-gdbserver board, where gdb_start/gdb_load spawn |
| # gdbserver and connect to it. |
| gdb_test "disconnect" ".*" |
| |
| gdb_test "$vgdbcmd" " in \\.?_start .*" "target remote for vgdb" |
| |
| gdb_test "monitor v.set gdb_output" "valgrind output will go to gdb.*" |
| |
| gdb_test_no_output "set displaced-stepping off" |
| gdb_breakpoint "main" "breakpoint at main" |
| gdb_test "continue" " stop 0 .*" "continue to main" |
| delete_breakpoints |
| |
| set curr_stop 0 |
| foreach displaced { "off" "on" } { |
| with_test_prefix "displaced $displaced" { |
| |
| gdb_test_no_output "set displaced-stepping $displaced" |
| |
| foreach go { "once" "twice" } { |
| with_test_prefix $go { |
| gdb_test "break" "Breakpoint .* at .*" "set breakpoint" |
| |
| # Whether we should see a warning. |
| set should_warn [expr {$go == "once" && $displaced == "on"}] |
| |
| incr curr_stop |
| |
| set msg "step over breakpoint" |
| set pattern " stop $curr_stop .*$gdb_prompt $" |
| gdb_test_multiple "next" $msg { |
| -re "warning: disabling displaced stepping.*$pattern" { |
| gdb_assert $should_warn $msg |
| } |
| -re "$pattern" { |
| gdb_assert !$should_warn $msg |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| # Only if valgrind got stuck. |
| remote_exec host "kill -9 ${valgrind_pid}" |