1 # Copyright 1997-2019 Free Software Foundation, Inc.
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.
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.
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/>. */
16 if {![can_spawn_for_attach]} {
20 standard_testfile attach.c attach2.c
21 set binfile2 ${binfile}2
22 set escapedbinfile [string_to_regexp $binfile]
24 #execute_anywhere "rm -f ${binfile} ${binfile2}"
25 remote_exec build "rm -f ${binfile} ${binfile2}"
26 # For debugging this test
30 # build the first test case
32 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
33 untested "failed to compile"
37 # Build the in-system-call test
39 if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
40 untested "failed to compile in-system-call test"
44 if [get_compiler_info] {
48 proc do_attach_tests {} {
58 # Figure out a regular expression that will match the sysroot,
59 # noting that the default sysroot is "target:", and also noting
60 # that GDB will strip "target:" from the start of filenames when
61 # operating on the local filesystem. However the default sysroot
62 # can be set via configure option --with-sysroot, which can be "/".
63 # If $binfile is a absolute path, so pattern
64 # "$sysroot$escapedbinfile" below is wrong. Use [^\r\n]* to make
66 set sysroot "\[^\r\n\]*"
68 # Start the program running and then wait for a bit, to be sure
69 # that it can be attached to.
71 set test_spawn_id [spawn_wait_for_attach $binfile]
72 set testpid [spawn_id_get_pid $test_spawn_id]
74 # Verify that we cannot attach to nonsense.
76 set test "attach to nonsense is prohibited"
77 gdb_test_multiple "attach abc" "$test" {
78 -re "Illegal process-id: abc\\.\r\n$gdb_prompt $" {
81 -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
82 # Response expected from /proc-based systems.
85 -re "Can't attach to process..*$gdb_prompt $" {
86 # Response expected on Cygwin
89 -re "Attaching to.*$gdb_prompt $" {
90 fail "$test (bogus pid allowed)"
94 # Verify that we cannot attach to nonsense even if its initial part is
97 set test "attach to digits-starting nonsense is prohibited"
98 gdb_test_multiple "attach ${testpid}x" "$test" {
99 -re "Illegal process-id: ${testpid}x\\.\r\n$gdb_prompt $" {
102 -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
103 # Response expected from /proc-based systems.
106 -re "Can't attach to process..*$gdb_prompt $" {
107 # Response expected on Cygwin
110 -re "Attaching to.*$gdb_prompt $" {
111 fail "$test (bogus pid allowed)"
115 # Verify that we cannot attach to what appears to be a valid
116 # process ID, but is a process that doesn't exist. Traditionally,
117 # most systems didn't have a process with ID 0, so we take that as
118 # the default. However, there are a few exceptions.
121 if { [istarget "*-*-*bsd*"] } {
122 # In FreeBSD 5.0, PID 0 is used for "swapper". Use -1 instead
123 # (which should have the desired effect on any version of
124 # FreeBSD, and probably other *BSD's too).
127 set test "attach to nonexistent process is prohibited"
128 gdb_test_multiple "attach $boguspid" "$test" {
129 -re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
130 # Response expected on ptrace-based systems (i.e. HP-UX 10.20).
133 -re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
134 # Response expected on ttrace-based systems (i.e. HP-UX 11.0).
137 -re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
140 -re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
143 -re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
144 # Response expected from /proc-based systems.
147 -re "Can't attach to process..*$gdb_prompt $" {
148 # Response expected on Cygwin
151 -re "Attaching to.*, process $boguspid.*failed.*$gdb_prompt $" {
152 # Response expected on the extended-remote target.
157 # Verify that we can attach to the process by first giving its
158 # executable name via the file command, and using attach with the
161 # (Actually, the test system appears to do this automatically for
162 # us. So, we must also be prepared to be asked if we want to
163 # discard an existing set of symbols.)
165 set test "set file, before attach1"
166 gdb_test_multiple "file $binfile" "$test" {
167 -re "Load new symbol table from.*y or n. $" {
168 gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*" \
171 -re "Reading symbols from $escapedbinfile\.\.\.*$gdb_prompt $" {
176 set test "attach1, after setting file"
177 gdb_test_multiple "attach $testpid" "$test" {
178 -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
181 -re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
182 # Response expected on Cygwin
187 # Verify that we can "see" the variable "should_exit" in the
188 # program, and that it is zero.
190 gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
192 # Detach the process.
195 "Detaching from program: .*$escapedbinfile, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]" \
198 # Wait a bit for gdb to finish detaching
202 # Purge the symbols from gdb's brain. (We want to be certain the
203 # next attach, which won't be preceded by a "file" command, is
204 # really getting the executable file without our help.)
206 set old_timeout $timeout
208 set test "attach1, purging symbols after detach"
209 gdb_test_multiple "file" "$test" {
210 -re "No executable file now.*Discard symbol table.*y or n. $" {
211 gdb_test "y" "No symbol file now." "$test"
214 set timeout $old_timeout
216 # Verify that we can attach to the process just by giving the
219 set test "attach2, with no file"
220 set found_exec_file 0
221 gdb_test_multiple "attach $testpid" "$test" {
222 -re "Attaching to process $testpid.*Load new symbol table from \"$sysroot$escapedbinfile\.exe\".*y or n. $" {
223 # On Cygwin, the DLL's symbol tables are loaded prior to the
224 # executable's symbol table. This in turn always results in
225 # asking the user for actually loading the symbol table of the
227 gdb_test "y" "Reading symbols from $sysroot$escapedbinfile\.\.\.*" \
230 set found_exec_file 1
232 -re "Attaching to process $testpid.*Reading symbols from $sysroot$escapedbinfile.*main.*at .*$gdb_prompt $" {
234 set found_exec_file 1
238 if {$found_exec_file == 0} {
239 set test "load file manually, after attach2"
240 gdb_test_multiple "file $binfile" "$test" {
241 -re "A program is being debugged already..*Are you sure you want to change the file.*y or n. $" {
242 gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*" \
245 -re "Reading symbols from $escapedbinfile\.\.\.*$gdb_prompt $" {
251 # Verify that we can modify the variable "should_exit" in the
254 gdb_test_no_output "set should_exit=1" "after attach2, set should_exit"
256 # Verify that the modification really happened.
258 gdb_breakpoint [gdb_get_line_number "postloop"] temporary
259 gdb_continue_to_breakpoint "postloop" ".* postloop .*"
261 # Allow the test process to exit, to cleanup after ourselves.
263 gdb_continue_to_end "after attach2, exit"
265 # Make sure we don't leave a process around to confuse
266 # the next test run (and prevent the compile by keeping
267 # the text file busy), in case the "set should_exit" didn't
270 kill_wait_spawned_process $test_spawn_id
272 set test_spawn_id [spawn_wait_for_attach $binfile]
273 set testpid [spawn_id_get_pid $test_spawn_id]
275 # Verify that we can attach to the process, and find its a.out
276 # when we're cd'd to some directory that doesn't contain the
277 # a.out. (We use the source path set by the "dir" command.)
279 gdb_test "dir [standard_output_file {}]" "Source directories searched: .*" \
282 gdb_test "cd /tmp" "Working directory /tmp." \
283 "cd away from process working directory"
285 # Explicitly flush out any knowledge of the previous attachment.
287 set test "before attach3, flush symbols"
288 gdb_test_multiple "symbol-file" "$test" {
289 -re "Discard symbol table from.*y or n. $" {
290 gdb_test "y" "No symbol file now." \
293 -re "No symbol file now.*$gdb_prompt $" {
298 gdb_test "exec" "No executable file now." \
299 "before attach3, flush exec"
301 gdb_test "attach $testpid" \
302 "Attaching to process $testpid.*Reading symbols from $sysroot$escapedbinfile.*main.*at .*" \
303 "attach when process' a.out not in cwd"
305 set test "after attach3, exit"
309 "Kill the program being debugged.*y or n. $" \
312 # Another "don't leave a process around"
313 kill_wait_spawned_process $test_spawn_id
316 proc do_call_attach_tests {} {
320 set test_spawn_id [spawn_wait_for_attach $binfile2]
321 set testpid [spawn_id_get_pid $test_spawn_id]
325 gdb_test "file $binfile2" ".*" "load file"
326 set test "attach call"
327 gdb_test_multiple "attach $testpid" "$test" {
328 -re "warning: reading register.*I.*O error.*$gdb_prompt $" {
329 fail "$test (read register error)"
331 -re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
334 -re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
339 # See if other registers are problems
341 set test "info other register"
342 gdb_test_multiple "i r r3" "$test" {
343 -re "warning: reading register.*$gdb_prompt $" {
346 -re "r3.*$gdb_prompt $" {
351 # Get rid of the process
353 gdb_test "p should_exit = 1"
358 kill_wait_spawned_process $test_spawn_id
361 proc do_command_attach_tests {} {
366 global INTERNAL_GDBFLAGS
369 if ![isnative] then {
370 unsupported "command attach test"
374 set test_spawn_id [spawn_wait_for_attach $binfile]
375 set testpid [spawn_id_get_pid $test_spawn_id]
379 set res [gdb_spawn_with_cmdline_opts \
380 "-quiet -iex \"set height 0\" -iex \"set width 0\" --pid=$testpid"]
381 set test "starting with --pid"
382 gdb_test_multiple "" $test {
383 -re "Reading symbols from.*$gdb_prompt $" {
388 # Get rid of the process
389 kill_wait_spawned_process $test_spawn_id
392 # Test ' gdb --pid PID -ex "run" '. GDB used to have a bug where
393 # "run" would run before the attach finished - PR17347.
395 proc test_command_line_attach_run {} {
399 if ![isnative] then {
400 unsupported "commandline attach run test"
404 with_test_prefix "cmdline attach run" {
405 set test_spawn_id [spawn_wait_for_attach $binfile]
406 set testpid [spawn_id_get_pid $test_spawn_id]
408 set test "run to prompt"
411 set res [gdb_spawn_with_cmdline_opts \
412 "-quiet -iex \"set height 0\" -iex \"set width 0\" --pid=$testpid -ex \"start\""]
415 kill_wait_spawned_process $test_spawn_id
418 gdb_test_multiple "" $test {
419 -re {Attaching to.*Start it from the beginning\? \(y or n\) } {
426 set test "run to main"
427 gdb_test_multiple "" $test {
428 -re "Temporary breakpoint .* main .*$gdb_prompt $" {
433 # Get rid of the process
434 kill_wait_spawned_process $test_spawn_id
438 # Start with a fresh gdb
442 gdb_reinitialize_dir $srcdir/$subdir
445 # This is a test of gdb's ability to attach to a running process.
449 # Test attaching when the target is inside a system call
454 gdb_reinitialize_dir $srcdir/$subdir
459 do_command_attach_tests
461 test_command_line_attach_run