gdb/testsuite/lib/valgrind.exp

   1 # Copyright 2009-2021 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Generic subroutines for handling valgrind vgdb server.
  17
  18 #
  19 # Start a vgdb server, and connect gdb to it.  Return 0 on success, and -1 on
  20 # error.
  21 #
  22 proc vgdb_start { {active_at_startup 1} } {
  23     global binfile use_gdb_stub board testfile
  24     global valgrind_spawn_id gdb_spawn_id
  25     global decimal
  26
  27     set test "spawn valgrind"
  28     set cmd_list [list]
  29     lappend cmd_list "valgrind"
  30     if { $active_at_startup } {
  31         lappend cmd_list "--vgdb-error=0"
  32     }
  33     lappend cmd_list $binfile
  34     set cmd [join $cmd_list]
  35     set res [remote_spawn host $cmd]
  36     if { $res < 0 || $res == "" } {
  37         verbose -log "Spawning $cmd failed."
  38         unsupported $test
  39         return -1
  40     }
  41     pass $test
  42     # Declare GDB now as running.
  43     set gdb_spawn_id $res
  44
  45     # GDB started by vgdb stops already after the startup is executed, like with
  46     # non-extended gdbserver.  It is also not correct to run/attach the inferior.
  47     set use_gdb_stub 1
  48
  49     set test "valgrind started"
  50     # The trailing '.' differs for different memcheck versions.
  51     gdb_test_multiple "" $test {
  52         -re "==($decimal)== Memcheck, a memory error detector\\.?\r\n" {
  53             set vgdbpid $expect_out(1,string)
  54             pass $test
  55         }
  56         -re "valgrind: failed to start tool 'memcheck' for platform '.*': No such file or directory" {
  57             unsupported $test
  58             return -1
  59         }
  60         -re "valgrind: wrong ELF executable class" {
  61             unsupported $test
  62             return -1
  63         }
  64         -re "command not found" {
  65             # The spawn succeeded, but then valgrind was not found - e.g. if
  66             # we spawned SSH to a remote system.
  67             unsupported $test
  68             return -1
  69         }
  70         -re "valgrind: Bad option.*--vgdb-error=0" {
  71             # valgrind is not >= 3.7.0.
  72             unsupported $test
  73             return -1
  74         }
  75     }
  76
  77     # Do not kill valgrind.
  78     set valgrind_spawn_id [board_info host fileid]
  79     unset gdb_spawn_id
  80     set board [host_info name]
  81     unset_board_info fileid
  82
  83     clean_restart $testfile
  84
  85     # Make sure we're disconnected, in case we're testing with the
  86     # native-extended-gdbserver board, where gdb_start/gdb_load spawn
  87     # gdbserver and connect to it.
  88     gdb_test "disconnect" ".*"
  89
  90     set vgdbcmd "target remote | vgdb --pid=$vgdbpid"
  91     if { $active_at_startup } {
  92         gdb_test "$vgdbcmd" " in \\.?_start .*" "target remote for vgdb"
  93     } else {
  94         # Let $binfile run a bit before attaching.  This is a bit of a hack,
  95         # in that it lets test-case valgrind-infcall-2.exp run to the point of
  96         # nanosleep, which seems to be required to trigger the error condition.
  97         # So, without this, we hit
  98         # "UNSUPPORTED: gdb.base/valgrind-infcall-2.exp: do printf".
  99         exec sleep 1
 100
 101         # Connect to vgdb.  Don't expect to be anywhere in particular.
 102         gdb_test "$vgdbcmd" "" "target remote for vgdb"
 103     }
 104
 105     gdb_test "monitor v.set gdb_output" "valgrind output will go to gdb.*"
 106     return 0
 107 }
 108
 109 #
 110 # Stop vgdb server.
 111 #
 112 proc vgdb_stop { } {
 113     global valgrind_spawn_id
 114
 115     # Only if valgrind got stuck.
 116     kill_wait_spawned_process $valgrind_spawn_id
 117 }