136 lines
3.9 KiB
Text
136 lines
3.9 KiB
Text
# Copyright 2012-2016 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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# Step over breakpoints with displaced stepping on, against Valgrind.
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# We can't really use displaced stepping with Valgrind, so what this
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# really tests is that GDB falls back to in-line stepping
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# automatically instead of getting stuck or crashing.
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if [is_remote target] {
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# The test always runs locally.
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return 0
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}
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standard_testfile .c
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if {[build_executable "failed to build" $testfile $srcfile {debug}] == -1} {
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return -1
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}
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set test "spawn valgrind"
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set cmd "valgrind --vgdb-error=0 $binfile"
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set res [remote_spawn host $cmd]
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if { $res < 0 || $res == "" } {
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verbose -log "Spawning $cmd failed."
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unsupported $test
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return -1
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}
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pass $test
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# Declare GDB now as running.
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set gdb_spawn_id $res
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# GDB started by vgdb stops already after the startup is executed, like with
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# non-extended gdbserver. It is also not correct to run/attach the inferior.
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set use_gdb_stub 1
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set test "valgrind started"
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# The trailing '.' differs for different memcheck versions.
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gdb_test_multiple "" $test {
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-re "Memcheck, a memory error detector\\.?\r\n" {
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pass $test
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}
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-re "valgrind: failed to start tool 'memcheck' for platform '.*': No such file or directory" {
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unsupported $test
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return -1
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}
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-re "valgrind: wrong ELF executable class" {
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unsupported $test
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return -1
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}
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-re "command not found" {
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# The spawn succeeded, but then valgrind was not found - e.g. if
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# we spawned SSH to a remote system.
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unsupported $test
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return -1
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}
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-re "valgrind: Bad option.*--vgdb-error=0" {
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# valgrind is not >= 3.7.0.
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unsupported $test
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return -1
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}
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}
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set test "vgdb prompt"
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# The trailing '.' differs for different memcheck versions.
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gdb_test_multiple "" $test {
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-re " (target remote | \[^\r\n\]*/vgdb \[^\r\n\]*)\r\n" {
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set vgdbcmd $expect_out(1,string)
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pass $test
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}
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}
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# Do not kill valgrind.
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set valgrind_pid [exp_pid -i [board_info host fileid]]
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unset gdb_spawn_id
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set board [host_info name]
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unset_board_info fileid
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clean_restart $testfile
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# Make sure we're disconnected, in case we're testing with the
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# native-extended-gdbserver board, where gdb_start/gdb_load spawn
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# gdbserver and connect to it.
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gdb_test "disconnect" ".*"
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gdb_test "$vgdbcmd" " in \\.?_start .*" "target remote for vgdb"
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gdb_test "monitor v.set gdb_output" "valgrind output will go to gdb.*"
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gdb_test_no_output "set displaced-stepping off"
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gdb_breakpoint "main" "breakpoint at main"
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gdb_test "continue" " stop 0 .*" "continue to main"
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delete_breakpoints
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set curr_stop 0
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foreach displaced { "off" "on" } {
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with_test_prefix "displaced $displaced" {
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gdb_test_no_output "set displaced-stepping $displaced"
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foreach go { "once" "twice" } {
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with_test_prefix $go {
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gdb_test "break" "Breakpoint .* at .*" "set breakpoint"
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# Whether we should see a warning.
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set should_warn [expr {$go == "once" && $displaced == "on"}]
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incr curr_stop
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set msg "step over breakpoint"
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set pattern " stop $curr_stop .*$gdb_prompt $"
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gdb_test_multiple "next" $msg {
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-re "warning: disabling displaced stepping.*$pattern" {
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gdb_assert $should_warn $msg
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}
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-re "$pattern" {
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gdb_assert !$should_warn $msg
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}
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}
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}
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}
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}
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}
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# Only if valgrind got stuck.
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remote_exec host "kill -9 ${valgrind_pid}"
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