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213516ef | 1 | # Copyright 2003-2023 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 | ||
d4c45423 | 24 | if {[file executable $arg]} { |
c95aea6b TT |
25 | return $arg |
26 | } | |
27 | ||
28 | set result [which $arg] | |
d4c45423 | 29 | if {[string match "/" [ string range $result 0 0 ]]} { |
c95aea6b TT |
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. | |
41e37c9d TV |
43 | # Return 0 in case of success, -1 in case of failure, and -2 in case of |
44 | # skipping the test-case. | |
c95aea6b TT |
45 | |
46 | proc selftest_setup { executable function } { | |
47 | global gdb_prompt | |
c95aea6b TT |
48 | global INTERNAL_GDBFLAGS |
49 | ||
50 | # load yourself into the debugger | |
c95aea6b TT |
51 | |
52 | global gdb_file_cmd_debug_info | |
53 | set gdb_file_cmd_debug_info "unset" | |
54 | ||
55 | set result [gdb_load $executable] | |
c95aea6b | 56 | |
d4c45423 | 57 | if {$result != 0} { |
c95aea6b TT |
58 | return -1 |
59 | } | |
60 | ||
d4c45423 | 61 | if {$gdb_file_cmd_debug_info != "debug"} { |
bc6c7af4 | 62 | untested "no debug information, skipping testcase." |
41e37c9d | 63 | return -2 |
c95aea6b TT |
64 | } |
65 | ||
41e37c9d TV |
66 | # Set a breakpoint at $function. |
67 | if { [gdb_breakpoint $function "no-message"] != 1 } { | |
68 | untested "Cannot set breakpoint at $function, skipping testcase." | |
69 | return -2 | |
70 | } | |
c95aea6b TT |
71 | |
72 | # run yourself | |
c95aea6b TT |
73 | |
74 | set description "run until breakpoint at $function" | |
75 | gdb_test_multiple "run $INTERNAL_GDBFLAGS" "$description" { | |
70ee0000 | 76 | -re "Starting program.*Breakpoint \[0-9\]+,.*$function \\(.*\\).* at .*main.c:.*$gdb_prompt $" { |
c95aea6b TT |
77 | pass "$description" |
78 | } | |
70ee0000 | 79 | -re "Starting program.*Breakpoint \[0-9\]+,.*$function \\(.*\\).*$gdb_prompt $" { |
c95aea6b TT |
80 | xfail "$description (line numbers scrambled?)" |
81 | } | |
82 | -re "vfork: No more processes.*$gdb_prompt $" { | |
83 | fail "$description (out of virtual memory)" | |
c95aea6b TT |
84 | return -1 |
85 | } | |
86 | -re ".*$gdb_prompt $" { | |
87 | fail "$description" | |
c95aea6b TT |
88 | return -1 |
89 | } | |
90 | } | |
91 | ||
c95aea6b TT |
92 | return 0 |
93 | } | |
94 | ||
95 | # A simple way to run some self-tests. | |
96 | ||
97 | proc do_self_tests {function body} { | |
98 | global GDB tool | |
99 | ||
dad0c6d2 PA |
100 | # Are we testing with a remote board? In that case, the target |
101 | # won't have access to the GDB's auxilliary data files | |
102 | # (data-directory, etc.). It's simpler to just skip. | |
103 | if [is_remote target] { | |
104 | return | |
105 | } | |
106 | ||
107 | # ... or seemingly testing with a cross debugger? Likely GDB | |
108 | # wouldn't be able to debug itself then... | |
109 | if ![isnative] { | |
110 | return | |
111 | } | |
112 | ||
113 | # ... or with a stub-like server? I.e., gdbserver + "target | |
114 | # remote"? In that case we won't be able to pass command line | |
115 | # arguments to GDB, and selftest_setup wants to do exactly that. | |
079670b9 | 116 | if [use_gdb_stub] { |
e379b391 TT |
117 | return |
118 | } | |
119 | ||
c95aea6b TT |
120 | # Run the test with self. Copy the file executable file in case |
121 | # this OS doesn't like to edit its own text space. | |
122 | ||
123 | set GDB_FULLPATH [find_gdb $GDB] | |
124 | ||
bdfe0594 TT |
125 | if {[is_remote host]} { |
126 | set xgdb x$tool | |
127 | } else { | |
128 | set xgdb [standard_output_file x$tool] | |
129 | } | |
130 | ||
c95aea6b | 131 | # Remove any old copy lying around. |
bdfe0594 | 132 | remote_file host delete $xgdb |
c95aea6b TT |
133 | |
134 | gdb_start | |
bdfe0594 | 135 | set file [remote_download host $GDB_FULLPATH $xgdb] |
c95aea6b | 136 | |
687e348e SM |
137 | # When debugging GDB with GDB, some operations can take a relatively long |
138 | # time, especially if the build is non-optimized. Bump the timeout for the | |
139 | # duration of the test. | |
140 | with_timeout_factor 10 { | |
141 | set result [selftest_setup $file $function] | |
d4c45423 | 142 | if {$result == 0} { |
687e348e SM |
143 | set result [uplevel $body] |
144 | } | |
c95aea6b TT |
145 | } |
146 | ||
147 | gdb_exit | |
148 | catch "remote_file host delete $file" | |
149 | ||
d4c45423 | 150 | if {$result == -1} { |
c95aea6b TT |
151 | warning "Couldn't test self" |
152 | } | |
153 | } |