1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
# Copyright 2012-2018 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}"
|
