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# Copyright 2009-2021 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
# 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 <>.
# Generic subroutines for handling valgrind vgdb server.
# Start a vgdb server, and connect gdb to it. Return 0 on success, and -1 on
# error.
proc vgdb_start { {active_at_startup 1} } {
global binfile use_gdb_stub board testfile
global valgrind_spawn_id gdb_spawn_id
global decimal
set test "spawn valgrind"
set cmd_list [list]
lappend cmd_list "valgrind"
if { $active_at_startup } {
lappend cmd_list "--vgdb-error=0"
lappend cmd_list $binfile
set cmd [join $cmd_list]
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 "" $test {
-re "==($decimal)== Memcheck, a memory error detector\\.?\r\n" {
set vgdbpid $expect_out(1,string)
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
# Do not kill valgrind.
set valgrind_spawn_id [board_info host fileid]
unset gdb_spawn_id
set board [host_info name]
unset_board_info fileid
clean_restart $testfile
set_remotetimeout 4
# Make sure we're disconnected, in case we're testing with the
# native-extended-gdbserver board, where gdb_start/gdb_load spawn
# gdbserver and connect to it.
gdb_test "disconnect" ".*"
set vgdbcmd "target remote | vgdb --wait=2 --max-invoke-ms=2500 --pid=$vgdbpid"
if { $active_at_startup } {
gdb_test "$vgdbcmd" " in \\.?_start .*" "target remote for vgdb"
} else {
# Let $binfile run a bit before attaching. This is a bit of a hack,
# in that it lets test-case valgrind-infcall-2.exp run to the point of
# nanosleep, which seems to be required to trigger the error condition.
# So, without this, we hit
# "UNSUPPORTED: gdb.base/valgrind-infcall-2.exp: do printf".
exec sleep 1
# Connect to vgdb. Don't expect to be anywhere in particular.
gdb_test "$vgdbcmd" "" "target remote for vgdb"
gdb_test "monitor v.set gdb_output" "valgrind output will go to gdb.*"
return 0
# Stop vgdb server.
proc vgdb_stop { } {
global valgrind_spawn_id
# Only if valgrind got stuck.
kill_wait_spawned_process $valgrind_spawn_id