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42a4f53d | 1 | # Copyright 2003-2019 Free Software Foundation, Inc. |
c95aea6b TT |
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 | # Find a pathname to a file that we would execute if the shell was asked | |
17 | # to run $arg using the current PATH. | |
18 | ||
19 | proc find_gdb { arg } { | |
20 | ||
21 | # If the arg directly specifies an existing executable file, then | |
22 | # simply use it. | |
23 | ||
24 | if [file executable $arg] then { | |
25 | return $arg | |
26 | } | |
27 | ||
28 | set result [which $arg] | |
29 | if [string match "/" [ string range $result 0 0 ]] then { | |
30 | return $result | |
31 | } | |
32 | ||
33 | # If everything fails, just return the unqualified pathname as default | |
34 | # and hope for best. | |
35 | ||
36 | return $arg | |
37 | } | |
38 | ||
39 | # A helper proc that sets up for self-testing. | |
40 | # EXECUTABLE is the gdb to use. | |
41 | # FUNCTION is the function to break in, either captured_main | |
42 | # or captured_command_loop. | |
43 | ||
44 | proc selftest_setup { executable function } { | |
45 | global gdb_prompt | |
46 | global timeout | |
47 | global INTERNAL_GDBFLAGS | |
48 | ||
49 | # load yourself into the debugger | |
50 | # This can take a relatively long time, particularly for testing where | |
51 | # the executable is being accessed over a network, or where gdb does not | |
52 | # support partial symbols for a particular target and has to load the | |
53 | # entire symbol table. Set the timeout to 10 minutes, which should be | |
54 | # adequate for most environments (it *has* timed out with 5 min on a | |
55 | # SPARCstation SLC under moderate load, so this isn't unreasonable). | |
56 | # After gdb is started, set the timeout to 30 seconds for the duration | |
57 | # of this test, and then back to the original value. | |
58 | ||
59 | set oldtimeout $timeout | |
60 | set timeout 600 | |
61 | verbose "Timeout is now $timeout seconds" 2 | |
62 | ||
63 | global gdb_file_cmd_debug_info | |
64 | set gdb_file_cmd_debug_info "unset" | |
65 | ||
66 | set result [gdb_load $executable] | |
67 | set timeout $oldtimeout | |
68 | verbose "Timeout is now $timeout seconds" 2 | |
69 | ||
70 | if { $result != 0 } then { | |
71 | return -1 | |
72 | } | |
73 | ||
74 | if { $gdb_file_cmd_debug_info != "debug" } then { | |
bc6c7af4 | 75 | untested "no debug information, skipping testcase." |
c95aea6b TT |
76 | return -1 |
77 | } | |
78 | ||
79 | # Set a breakpoint at main | |
80 | gdb_test "break $function" \ | |
81 | "Breakpoint.*at.* file.*, line.*" \ | |
82 | "breakpoint in $function" | |
83 | ||
84 | # run yourself | |
85 | # It may take a very long time for the inferior gdb to start (lynx), | |
86 | # so we bump it back up for the duration of this command. | |
87 | set timeout 600 | |
88 | ||
89 | set description "run until breakpoint at $function" | |
90 | gdb_test_multiple "run $INTERNAL_GDBFLAGS" "$description" { | |
70ee0000 | 91 | -re "Starting program.*Breakpoint \[0-9\]+,.*$function \\(.*\\).* at .*main.c:.*$gdb_prompt $" { |
c95aea6b TT |
92 | pass "$description" |
93 | } | |
70ee0000 | 94 | -re "Starting program.*Breakpoint \[0-9\]+,.*$function \\(.*\\).*$gdb_prompt $" { |
c95aea6b TT |
95 | xfail "$description (line numbers scrambled?)" |
96 | } | |
97 | -re "vfork: No more processes.*$gdb_prompt $" { | |
98 | fail "$description (out of virtual memory)" | |
99 | set timeout $oldtimeout | |
100 | verbose "Timeout is now $timeout seconds" 2 | |
101 | return -1 | |
102 | } | |
103 | -re ".*$gdb_prompt $" { | |
104 | fail "$description" | |
105 | set timeout $oldtimeout | |
106 | verbose "Timeout is now $timeout seconds" 2 | |
107 | return -1 | |
108 | } | |
109 | } | |
110 | ||
111 | set timeout $oldtimeout | |
112 | verbose "Timeout is now $timeout seconds" 2 | |
113 | ||
114 | return 0 | |
115 | } | |
116 | ||
117 | # A simple way to run some self-tests. | |
118 | ||
119 | proc do_self_tests {function body} { | |
120 | global GDB tool | |
121 | ||
dad0c6d2 PA |
122 | # Are we testing with a remote board? In that case, the target |
123 | # won't have access to the GDB's auxilliary data files | |
124 | # (data-directory, etc.). It's simpler to just skip. | |
125 | if [is_remote target] { | |
126 | return | |
127 | } | |
128 | ||
129 | # ... or seemingly testing with a cross debugger? Likely GDB | |
130 | # wouldn't be able to debug itself then... | |
131 | if ![isnative] { | |
132 | return | |
133 | } | |
134 | ||
135 | # ... or with a stub-like server? I.e., gdbserver + "target | |
136 | # remote"? In that case we won't be able to pass command line | |
137 | # arguments to GDB, and selftest_setup wants to do exactly that. | |
079670b9 | 138 | if [use_gdb_stub] { |
e379b391 TT |
139 | return |
140 | } | |
141 | ||
c95aea6b TT |
142 | # Run the test with self. Copy the file executable file in case |
143 | # this OS doesn't like to edit its own text space. | |
144 | ||
145 | set GDB_FULLPATH [find_gdb $GDB] | |
146 | ||
bdfe0594 TT |
147 | if {[is_remote host]} { |
148 | set xgdb x$tool | |
149 | } else { | |
150 | set xgdb [standard_output_file x$tool] | |
151 | } | |
152 | ||
c95aea6b | 153 | # Remove any old copy lying around. |
bdfe0594 | 154 | remote_file host delete $xgdb |
c95aea6b TT |
155 | |
156 | gdb_start | |
bdfe0594 | 157 | set file [remote_download host $GDB_FULLPATH $xgdb] |
c95aea6b TT |
158 | |
159 | set result [selftest_setup $file $function] | |
160 | if {$result == 0} then { | |
161 | set result [uplevel $body] | |
162 | } | |
163 | ||
164 | gdb_exit | |
165 | catch "remote_file host delete $file" | |
166 | ||
167 | if {$result < 0} then { | |
168 | warning "Couldn't test self" | |
169 | } | |
170 | } |