464 lines
13 KiB
Text
464 lines
13 KiB
Text
# Copyright 1997-2016 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>. */
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if {![can_spawn_for_attach]} {
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return 0
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}
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standard_testfile attach.c attach2.c
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set binfile2 ${binfile}2
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set escapedbinfile [string_to_regexp $binfile]
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#execute_anywhere "rm -f ${binfile} ${binfile2}"
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remote_exec build "rm -f ${binfile} ${binfile2}"
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# For debugging this test
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#
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#log_user 1
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# build the first test case
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#
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested attach.exp
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return -1
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}
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# Build the in-system-call test
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
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untested attach.exp
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return -1
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}
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if [get_compiler_info] {
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return -1
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}
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proc do_attach_tests {} {
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global gdb_prompt
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global binfile
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global escapedbinfile
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global srcfile
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global testfile
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global subdir
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global timeout
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# Figure out a regular expression that will match the sysroot,
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# noting that the default sysroot is "target:", and also noting
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# that GDB will strip "target:" from the start of filenames when
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# operating on the local filesystem
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set sysroot ""
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set test "show sysroot"
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gdb_test_multiple $test $test {
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-re "The current system root is \"(.*)\"\..*${gdb_prompt} $" {
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set sysroot $expect_out(1,string)
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}
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}
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regsub "^target:" "$sysroot" "(target:)?" sysroot
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# Start the program running and then wait for a bit, to be sure
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# that it can be attached to.
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set test_spawn_id [spawn_wait_for_attach $binfile]
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set testpid [spawn_id_get_pid $test_spawn_id]
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# Verify that we cannot attach to nonsense.
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set test "attach to nonsense is prohibited"
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gdb_test_multiple "attach abc" "$test" {
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-re "Illegal process-id: abc\\.\r\n$gdb_prompt $" {
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pass "$test"
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}
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-re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
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# Response expected from /proc-based systems.
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pass "$test"
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}
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-re "Can't attach to process..*$gdb_prompt $" {
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# Response expected on Cygwin
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pass "$test"
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}
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-re "Attaching to.*$gdb_prompt $" {
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fail "$test (bogus pid allowed)"
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}
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}
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# Verify that we cannot attach to nonsense even if its initial part is
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# a valid PID.
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set test "attach to digits-starting nonsense is prohibited"
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gdb_test_multiple "attach ${testpid}x" "$test" {
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-re "Illegal process-id: ${testpid}x\\.\r\n$gdb_prompt $" {
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pass "$test"
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}
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-re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
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# Response expected from /proc-based systems.
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pass "$test"
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}
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-re "Can't attach to process..*$gdb_prompt $" {
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# Response expected on Cygwin
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pass "$test"
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}
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-re "Attaching to.*$gdb_prompt $" {
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fail "$test (bogus pid allowed)"
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}
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}
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# Verify that we cannot attach to what appears to be a valid
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# process ID, but is a process that doesn't exist. Traditionally,
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# most systems didn't have a process with ID 0, so we take that as
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# the default. However, there are a few exceptions.
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set boguspid 0
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if { [istarget "*-*-*bsd*"] } {
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# In FreeBSD 5.0, PID 0 is used for "swapper". Use -1 instead
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# (which should have the desired effect on any version of
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# FreeBSD, and probably other *BSD's too).
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set boguspid -1
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}
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set test "attach to nonexistent process is prohibited"
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gdb_test_multiple "attach $boguspid" "$test" {
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-re "Attaching to.*, process $boguspid.*No such process.*$gdb_prompt $" {
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# Response expected on ptrace-based systems (i.e. HP-UX 10.20).
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pass "$test"
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}
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-re "Attaching to.*, process $boguspid failed.*Hint.*$gdb_prompt $" {
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# Response expected on ttrace-based systems (i.e. HP-UX 11.0).
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pass "$test"
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}
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-re "Attaching to.*, process $boguspid.*denied.*$gdb_prompt $" {
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pass "$test"
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}
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-re "Attaching to.*, process $boguspid.*not permitted.*$gdb_prompt $" {
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pass "$test"
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}
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-re "Attaching to.*, process .*couldn't open /proc file.*$gdb_prompt $" {
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# Response expected from /proc-based systems.
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pass "$test"
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}
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-re "Can't attach to process..*$gdb_prompt $" {
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# Response expected on Cygwin
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pass "$test"
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}
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-re "Attaching to.*, process $boguspid.*failed.*$gdb_prompt $" {
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# Response expected on the extended-remote target.
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pass "$test"
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}
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}
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# Verify that we can attach to the process by first giving its
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# executable name via the file command, and using attach with the
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# process ID.
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# (Actually, the test system appears to do this automatically for
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# us. So, we must also be prepared to be asked if we want to
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# discard an existing set of symbols.)
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set test "set file, before attach1"
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gdb_test_multiple "file $binfile" "$test" {
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-re "Load new symbol table from.*y or n. $" {
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gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
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"$test (re-read)"
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}
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-re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
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pass "$test"
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}
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}
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set test "attach1, after setting file"
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gdb_test_multiple "attach $testpid" "$test" {
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-re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*main.*at .*$srcfile:.*$gdb_prompt $" {
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pass "$test"
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}
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-re "Attaching to program.*`?$escapedbinfile\.exe'?, process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
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# Response expected on Cygwin
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pass "$test"
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}
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}
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# Verify that we can "see" the variable "should_exit" in the
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# program, and that it is zero.
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gdb_test "print should_exit" " = 0" "after attach1, print should_exit"
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# Detach the process.
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gdb_test "detach" \
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"Detaching from program: .*$escapedbinfile, process $testpid" \
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"attach1 detach"
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# Wait a bit for gdb to finish detaching
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exec sleep 5
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# Purge the symbols from gdb's brain. (We want to be certain the
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# next attach, which won't be preceded by a "file" command, is
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# really getting the executable file without our help.)
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set old_timeout $timeout
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set timeout 15
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set test "attach1, purging symbols after detach"
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gdb_test_multiple "file" "$test" {
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-re "No executable file now.*Discard symbol table.*y or n. $" {
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gdb_test "y" "No symbol file now." "$test"
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}
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}
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set timeout $old_timeout
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# Verify that we can attach to the process just by giving the
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# process ID.
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set test "attach2, with no file"
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set found_exec_file 0
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gdb_test_multiple "attach $testpid" "$test" {
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-re "Attaching to process $testpid.*Load new symbol table from \"$sysroot$escapedbinfile\.exe\".*y or n. $" {
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# On Cygwin, the DLL's symbol tables are loaded prior to the
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# executable's symbol table. This in turn always results in
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# asking the user for actually loading the symbol table of the
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# executable.
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gdb_test "y" "Reading symbols from $sysroot$escapedbinfile\.\.\.*done." \
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"$test (reset file)"
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set found_exec_file 1
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}
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-re "Attaching to process $testpid.*Reading symbols from $sysroot$escapedbinfile.*main.*at .*$gdb_prompt $" {
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pass "$test"
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set found_exec_file 1
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}
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}
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if {$found_exec_file == 0} {
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set test "load file manually, after attach2"
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gdb_test_multiple "file $binfile" "$test" {
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-re "A program is being debugged already..*Are you sure you want to change the file.*y or n. $" {
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gdb_test "y" "Reading symbols from $escapedbinfile\.\.\.*done." \
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"$test (re-read)"
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}
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-re "Reading symbols from $escapedbinfile\.\.\.*done.*$gdb_prompt $" {
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pass "$test"
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}
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}
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}
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# Verify that we can modify the variable "should_exit" in the
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# program.
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gdb_test_no_output "set should_exit=1" "after attach2, set should_exit"
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# Verify that the modification really happened.
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gdb_breakpoint [gdb_get_line_number "postloop"] temporary
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gdb_continue_to_breakpoint "postloop" ".* postloop .*"
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# Allow the test process to exit, to cleanup after ourselves.
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gdb_continue_to_end "after attach2, exit"
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# Make sure we don't leave a process around to confuse
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# the next test run (and prevent the compile by keeping
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# the text file busy), in case the "set should_exit" didn't
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# work.
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kill_wait_spawned_process $test_spawn_id
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set test_spawn_id [spawn_wait_for_attach $binfile]
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set testpid [spawn_id_get_pid $test_spawn_id]
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# Verify that we can attach to the process, and find its a.out
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# when we're cd'd to some directory that doesn't contain the
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# a.out. (We use the source path set by the "dir" command.)
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gdb_test "dir [standard_output_file {}]" "Source directories searched: .*" \
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"set source path"
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gdb_test "cd /tmp" "Working directory /tmp." \
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"cd away from process working directory"
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# Explicitly flush out any knowledge of the previous attachment.
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set test "before attach3, flush symbols"
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gdb_test_multiple "symbol-file" "$test" {
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-re "Discard symbol table from.*y or n. $" {
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gdb_test "y" "No symbol file now." \
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"$test"
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}
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-re "No symbol file now.*$gdb_prompt $" {
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pass "$test"
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}
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}
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gdb_test "exec" "No executable file now." \
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"before attach3, flush exec"
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gdb_test "attach $testpid" \
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"Attaching to process $testpid.*Reading symbols from $sysroot$escapedbinfile.*main.*at .*" \
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"attach when process' a.out not in cwd"
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set test "after attach3, exit"
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gdb_test "kill" \
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"" \
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"$test" \
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"Kill the program being debugged.*y or n. $" \
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"y"
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# Another "don't leave a process around"
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kill_wait_spawned_process $test_spawn_id
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}
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proc do_call_attach_tests {} {
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global gdb_prompt
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global binfile2
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set test_spawn_id [spawn_wait_for_attach $binfile2]
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set testpid [spawn_id_get_pid $test_spawn_id]
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# Attach
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gdb_test "file $binfile2" ".*" "force switch to gdb64, if necessary"
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set test "attach call"
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gdb_test_multiple "attach $testpid" "$test" {
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-re "warning: reading register.*I.*O error.*$gdb_prompt $" {
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fail "$test (read register error)"
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}
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-re "Attaching to.*process $testpid.*libc.*$gdb_prompt $" {
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pass "$test"
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}
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-re "Attaching to.*process $testpid.*\[Switching to thread $testpid\..*\].*$gdb_prompt $" {
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pass "$test"
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}
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}
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# See if other registers are problems
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set test "info other register"
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gdb_test_multiple "i r r3" "$test" {
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-re "warning: reading register.*$gdb_prompt $" {
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fail "$test"
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}
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-re "r3.*$gdb_prompt $" {
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pass "$test"
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}
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}
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# Get rid of the process
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gdb_test "p should_exit = 1"
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gdb_continue_to_end
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# Be paranoid
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kill_wait_spawned_process $test_spawn_id
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}
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proc do_command_attach_tests {} {
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global gdb_prompt
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global binfile
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global verbose
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global GDB
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global INTERNAL_GDBFLAGS
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global GDBFLAGS
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if ![isnative] then {
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unsupported "command attach test"
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return 0
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}
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set test_spawn_id [spawn_wait_for_attach $binfile]
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set testpid [spawn_id_get_pid $test_spawn_id]
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gdb_exit
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set res [gdb_spawn_with_cmdline_opts "--pid=$testpid"]
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set test "starting with --pid"
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gdb_test_multiple "" $test {
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-re "Reading symbols from.*$gdb_prompt $" {
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pass "$test"
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}
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}
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# Get rid of the process
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kill_wait_spawned_process $test_spawn_id
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}
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# Test ' gdb --pid PID -ex "run" '. GDB used to have a bug where
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# "run" would run before the attach finished - PR17347.
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proc test_command_line_attach_run {} {
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global gdb_prompt
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global binfile
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if ![isnative] then {
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unsupported "commandline attach run test"
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return 0
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}
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with_test_prefix "cmdline attach run" {
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set test_spawn_id [spawn_wait_for_attach $binfile]
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set testpid [spawn_id_get_pid $test_spawn_id]
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set test "run to prompt"
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gdb_exit
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set res [gdb_spawn_with_cmdline_opts \
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"-iex \"set height 0\" -iex \"set width 0\" --pid=$testpid -ex \"start\""]
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if { $res != 0} {
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fail $test
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kill_wait_spawned_process $test_spawn_id
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return $res
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}
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gdb_test_multiple "" $test {
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-re {Attaching to.*Start it from the beginning\? \(y or n\) } {
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pass $test
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}
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}
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send_gdb "y\n"
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set test "run to main"
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gdb_test_multiple "" $test {
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-re "Temporary breakpoint .* main .*$gdb_prompt $" {
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pass $test
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}
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}
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# Get rid of the process
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kill_wait_spawned_process $test_spawn_id
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}
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}
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# Start with a fresh gdb
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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# This is a test of gdb's ability to attach to a running process.
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do_attach_tests
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# Test attaching when the target is inside a system call
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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do_call_attach_tests
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# Test "gdb --pid"
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do_command_attach_tests
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test_command_line_attach_run
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return 0
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