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e2882c85 | 1 | # Copyright 2012-2018 Free Software Foundation, Inc. |
3fc8eb30 PA |
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 | # Step over breakpoints with displaced stepping on, against Valgrind. | |
17 | # We can't really use displaced stepping with Valgrind, so what this | |
18 | # really tests is that GDB falls back to in-line stepping | |
19 | # automatically instead of getting stuck or crashing. | |
20 | ||
21 | if [is_remote target] { | |
22 | # The test always runs locally. | |
23 | return 0 | |
24 | } | |
25 | ||
26 | standard_testfile .c | |
27 | if {[build_executable "failed to build" $testfile $srcfile {debug}] == -1} { | |
28 | return -1 | |
29 | } | |
30 | ||
31 | set test "spawn valgrind" | |
32 | set cmd "valgrind --vgdb-error=0 $binfile" | |
33 | set res [remote_spawn host $cmd] | |
34 | if { $res < 0 || $res == "" } { | |
35 | verbose -log "Spawning $cmd failed." | |
36 | unsupported $test | |
37 | return -1 | |
38 | } | |
39 | pass $test | |
40 | # Declare GDB now as running. | |
41 | set gdb_spawn_id $res | |
42 | ||
43 | # GDB started by vgdb stops already after the startup is executed, like with | |
44 | # non-extended gdbserver. It is also not correct to run/attach the inferior. | |
45 | set use_gdb_stub 1 | |
46 | ||
47 | set test "valgrind started" | |
48 | # The trailing '.' differs for different memcheck versions. | |
49 | gdb_test_multiple "" $test { | |
50 | -re "Memcheck, a memory error detector\\.?\r\n" { | |
51 | pass $test | |
52 | } | |
53 | -re "valgrind: failed to start tool 'memcheck' for platform '.*': No such file or directory" { | |
54 | unsupported $test | |
55 | return -1 | |
56 | } | |
57 | -re "valgrind: wrong ELF executable class" { | |
58 | unsupported $test | |
59 | return -1 | |
60 | } | |
61 | -re "command not found" { | |
62 | # The spawn succeeded, but then valgrind was not found - e.g. if | |
63 | # we spawned SSH to a remote system. | |
64 | unsupported $test | |
65 | return -1 | |
66 | } | |
67 | -re "valgrind: Bad option.*--vgdb-error=0" { | |
68 | # valgrind is not >= 3.7.0. | |
69 | unsupported $test | |
70 | return -1 | |
71 | } | |
72 | } | |
73 | ||
74 | set test "vgdb prompt" | |
75 | # The trailing '.' differs for different memcheck versions. | |
76 | gdb_test_multiple "" $test { | |
77 | -re " (target remote | \[^\r\n\]*/vgdb \[^\r\n\]*)\r\n" { | |
78 | set vgdbcmd $expect_out(1,string) | |
79 | pass $test | |
80 | } | |
81 | } | |
82 | ||
83 | # Do not kill valgrind. | |
84 | set valgrind_pid [exp_pid -i [board_info host fileid]] | |
85 | unset gdb_spawn_id | |
86 | set board [host_info name] | |
87 | unset_board_info fileid | |
88 | ||
89 | clean_restart $testfile | |
90 | ||
91 | # Make sure we're disconnected, in case we're testing with the | |
92 | # native-extended-gdbserver board, where gdb_start/gdb_load spawn | |
93 | # gdbserver and connect to it. | |
94 | gdb_test "disconnect" ".*" | |
95 | ||
96 | gdb_test "$vgdbcmd" " in \\.?_start .*" "target remote for vgdb" | |
97 | ||
98 | gdb_test "monitor v.set gdb_output" "valgrind output will go to gdb.*" | |
99 | ||
100 | gdb_test_no_output "set displaced-stepping off" | |
101 | gdb_breakpoint "main" "breakpoint at main" | |
102 | gdb_test "continue" " stop 0 .*" "continue to main" | |
103 | delete_breakpoints | |
104 | ||
105 | set curr_stop 0 | |
106 | foreach displaced { "off" "on" } { | |
107 | with_test_prefix "displaced $displaced" { | |
108 | ||
109 | gdb_test_no_output "set displaced-stepping $displaced" | |
110 | ||
111 | foreach go { "once" "twice" } { | |
112 | with_test_prefix $go { | |
113 | gdb_test "break" "Breakpoint .* at .*" "set breakpoint" | |
114 | ||
115 | # Whether we should see a warning. | |
116 | set should_warn [expr {$go == "once" && $displaced == "on"}] | |
117 | ||
118 | incr curr_stop | |
119 | ||
120 | set msg "step over breakpoint" | |
121 | set pattern " stop $curr_stop .*$gdb_prompt $" | |
122 | gdb_test_multiple "next" $msg { | |
123 | -re "warning: disabling displaced stepping.*$pattern" { | |
124 | gdb_assert $should_warn $msg | |
125 | } | |
126 | -re "$pattern" { | |
127 | gdb_assert !$should_warn $msg | |
128 | } | |
129 | } | |
130 | } | |
131 | } | |
132 | } | |
133 | } | |
134 | ||
135 | # Only if valgrind got stuck. | |
136 | remote_exec host "kill -9 ${valgrind_pid}" |