2fd33e9448
This patch updates several exec-related tests and some of the library functions in order to get them running with extended-remote. There were three changes that were required, as follows: In gdb.base/foll-exec.exp, use 'clean_start' in place of proc 'zap_session' to reset the state of the debugger between tests. This sets 'remote exec-file' to execute the correct binary file in each subsequent test. In gdb.base/pie-execl.exp, there is an expect statement with an expression that is used to match output from both gdb and the program under debug. For the remote target, this had to be split into two expressions, using $inferior_spawn_id to match the output from the program. Because I had encountered problems with extended-remote exec events in non-stop mode in my manual testing, I added non-stop testing to the non-ldr-exc-[1234].exp tests. In order to set non-stop mode for remote targets, it is necessary to 'set non-stop on' after gdb has started, but before it connects to gdbserver. This is done using 'save_vars' to set non-stop mode in GDBFLAGS, so GDB sets non-stop mode on startup. gdb/testsuite/ChangeLog: * gdb.base/foll-exec.c: Add copyright header. Fix formatting issues. * gdb.base/foll-exec.exp (zap_session): Delete proc. (do_exec_tests): Use clean_restart in place of zap_session, and for test initialization. Fix formatting issues. Use fail in place of perror. * gdb.base/pie-execl.exp (main): Use 'inferior_spawn_id' in an expect statement to match an expression with output from the program under debug. * gdb.threads/non-ldr-exc-1.exp (do_test, main): Add non-stop tests and pass stop mode argument to clean_restart. Use save_vars to enable non-stop in GDBFLAGS. * gdb.threads/non-ldr-exc-2.exp: Likewise. * gdb.threads/non-ldr-exc-3.exp: Likewise. * gdb.threads/non-ldr-exc-4.exp: Likewise.
566 lines
17 KiB
Text
566 lines
17 KiB
Text
# Copyright 1997-2015 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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# Various tests of gdb's ability to follow the parent or child of a
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# Unix vfork system call. A vfork parent is blocked until the child
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# either execs or exits --- since those events take somewhat different
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# code paths in GDB, both variants are exercised.
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if { [is_remote target] || ![isnative] } then {
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continue
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}
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# Until "set follow-fork-mode" and "catch vfork" are implemented on
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# other targets...
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#
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if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then {
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continue
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}
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# Test to see if we are on an HP-UX 10.20 and if so,
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# do not run these tests as catching vfork is disabled for
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# 10.20.
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if [istarget "hppa*-hp-hpux10.20"] then {
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return 0
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}
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# NOTE drow/2002-12-06: I don't know what the referenced kernel problem
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# is, but it appears to be fixed in recent HP/UX versions.
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##if [istarget "hppa2.0w-hp-hpux*"] {
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## warning "Don't run gdb.base/foll-vfork.exp until JAGaa43495 kernel problem is fixed."
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## return 0
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##}
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standard_testfile
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set compile_options debug
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set dirname [relative_filename [pwd] [file dirname $binfile]]
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lappend compile_options "additional_flags=-DBASEDIR=\"$dirname\""
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if {[build_executable $testfile.exp $testfile $srcfile $compile_options] == -1} {
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untested "failed to compile $testfile"
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return -1
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}
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set testfile2 "vforked-prog"
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set srcfile2 ${testfile2}.c
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if {[build_executable $testfile.exp $testfile2 $srcfile2 $compile_options] == -1} {
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untested "failed to compile $testfile2"
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return -1
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}
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# A few of these tests require a little more time than the standard
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# timeout allows.
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set oldtimeout $timeout
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set timeout [expr "$timeout + 10"]
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# Start with a fresh GDB, with verbosity enabled, and run to main. On
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# error, behave as "return", so we don't try to continue testing with
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# a borked session.
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proc setup_gdb {} {
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global testfile
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clean_restart $testfile
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# The "Detaching..." and "Attaching..." messages may be hidden by
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# default.
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gdb_test_no_output "set verbose"
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if ![runto_main] {
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return -code return
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}
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}
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proc check_vfork_catchpoints {} {
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global gdb_prompt
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global has_vfork_catchpoints
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setup_gdb
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# Verify that the system supports "catch vfork".
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gdb_test "catch vfork" "Catchpoint \[0-9\]* \\(vfork\\)" "insert first vfork catchpoint"
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set has_vfork_catchpoints 0
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gdb_test_multiple "continue" "continue to first vfork catchpoint" {
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-re ".*Your system does not support this type\r\nof catchpoint.*$gdb_prompt $" {
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unsupported "continue to first vfork catchpoint"
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}
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-re ".*Catchpoint.*$gdb_prompt $" {
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set has_vfork_catchpoints 1
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pass "continue to first vfork catchpoint"
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}
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}
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if {$has_vfork_catchpoints == 0} {
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unsupported "vfork catchpoints"
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return -code return
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}
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}
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proc vfork_parent_follow_through_step {} {
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with_test_prefix "vfork parent follow, through step" {
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global gdb_prompt
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setup_gdb
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gdb_test_no_output "set follow-fork parent"
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set test "step"
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gdb_test_multiple "next" $test {
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-re "Detaching after vfork from.*if \\(pid == 0\\).*$gdb_prompt " {
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pass $test
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}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any gdb_expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc vfork_parent_follow_to_bp {} {
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with_test_prefix "vfork parent follow, to bp" {
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global gdb_prompt
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global srcfile
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setup_gdb
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gdb_test_no_output "set follow-fork parent"
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set bp_location [gdb_get_line_number "printf (\"I'm the proud parent of child"]
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gdb_test "break ${srcfile}:${bp_location}" ".*" "break, vfork to bp"
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set test "continue to bp"
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gdb_test_multiple "continue" $test {
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-re ".*Detaching after vfork from child process.*Breakpoint.*${bp_location}.*$gdb_prompt " {
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pass $test
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}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc vfork_child_follow_to_exit {} {
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with_test_prefix "vfork child follow, to exit" {
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global gdb_prompt
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setup_gdb
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gdb_test_no_output "set follow-fork child"
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set test "continue to child exit"
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gdb_test_multiple "continue" $test {
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-re "Couldn't get registers.*$gdb_prompt " {
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# PR gdb/14766
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fail "$test"
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}
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-re "Attaching after.* vfork to.*Detaching vfork parent .* after child exit.*$gdb_prompt " {
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pass $test
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}
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}
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# The parent has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any gdb_expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc vfork_and_exec_child_follow_to_main_bp {} {
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with_test_prefix "vfork and exec child follow, to main bp" {
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global gdb_prompt
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global srcfile2
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setup_gdb
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gdb_test_no_output "set follow-fork child"
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set linenum [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}]
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set test "continue to bp"
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gdb_test_multiple "continue" $test {
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-re "Attaching after.* vfork to.*Detaching vfork parent.*xecuting new program.*Breakpoint.*vforked-prog.c:${linenum}.*$gdb_prompt " {
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pass $test
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}
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}
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# The parent has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any gdb_expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc vfork_and_exec_child_follow_through_step {} {
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with_test_prefix "vfork and exec child follow, through step" {
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global gdb_prompt
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global srcfile2
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if { [istarget "hppa*-*-hpux*"] && ![istarget "hppa*-*-hpux11.*"] } {
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# This test cannot be performed prior to HP-UX 10.30, because
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# ptrace-based debugging of a vforking program basically doesn't
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# allow the child to do things like hit a breakpoint between a
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# vfork and exec. This means that saying "set follow-fork
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# child; next" at a vfork() call won't work, because the
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# implementation of "next" sets a "step resume" breakpoint at
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# the return from the vfork(), which the child will hit on its
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# way to exec'ing.
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#
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verbose "vfork child-following next test ignored for pre-HP/UX-10.30 targets."
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return 0
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}
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setup_gdb
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gdb_test_no_output "set follow-fork child"
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set test "step over vfork"
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if { [istarget "hppa*-*-hpux*"]} {
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# Since the child cannot be debugged until after it has exec'd,
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# and since there's a bp on "main" in the parent, and since the
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# bp's for the parent are recomputed in the exec'd child, the
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# step through a vfork should land us in the "main" for the
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# exec'd child, too.
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#
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set linenum [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}]
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gdb_test_multiple "next" $test {
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-re "Attaching after vfork to.*Executing new program.*Breakpoint.*vforked-prog.c:${linenum}.*$gdb_prompt " {
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pass "$test"
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}
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}
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} else {
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# The ideal support is to be able to debug the child even
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# before it execs. Thus, "next" lands on the next line after
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# the vfork.
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gdb_test_multiple "next" $test {
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-re "Attaching after .* vfork to child.*if \\(pid == 0\\).*$gdb_prompt " {
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pass "$test"
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}
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}
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}
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# The parent has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc tcatch_vfork_then_parent_follow {} {
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with_test_prefix "vfork parent follow, finish after tcatch vfork" {
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global gdb_prompt
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global srcfile
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setup_gdb
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gdb_test_no_output "set follow-fork parent"
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gdb_test "tcatch vfork" "Catchpoint .*(vfork).*"
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# HP-UX 10.20 seems to stop you in "vfork", while more recent
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# HP-UXs stop you in "_vfork".
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set test "continue to vfork"
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gdb_test_multiple "continue" $test {
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-re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt " {
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pass $test
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}
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-re "vfork \\(\\) at.*$gdb_prompt " {
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pass $test
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}
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}
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set linenum [gdb_get_line_number "pid = vfork ();"]
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set test "finish"
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gdb_test_multiple "finish" $test {
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-re "Run till exit from.*vfork.*0x\[0-9a-fA-F\]* in main .* at .*${srcfile}:${linenum}.*$gdb_prompt " {
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pass $test
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}
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-re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " {
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send_gdb "finish\n"
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exp_continue
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}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc tcatch_vfork_then_child_follow_exec {} {
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with_test_prefix "vfork child follow, finish after tcatch vfork" {
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global gdb_prompt
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global srcfile
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global srcfile2
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setup_gdb
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gdb_test_no_output "set follow-fork child"
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gdb_test "tcatch vfork" "Catchpoint .*(vfork).*"
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# HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
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# stop you in "_vfork".
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set test "continue to vfork"
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gdb_test_multiple "continue" $test {
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-re "vfork \\(\\) at .*$gdb_prompt $" {
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pass $test
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}
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-re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt " {
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pass $test
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}
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}
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set linenum1 [gdb_get_line_number "pid = vfork ();"]
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set linenum2 [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}]
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set test "finish"
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gdb_test_multiple "finish" $test {
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-re "Run till exit from.*vfork.*${srcfile}:${linenum1}.*$gdb_prompt " {
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pass $test
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}
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-re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " {
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send_gdb "finish\n"
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exp_continue
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}
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-re "Run till exit from.*vfork.*${srcfile2}:${linenum2}.*$gdb_prompt " {
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pass "$test (followed exec)"
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}
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}
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# The parent has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc tcatch_vfork_then_child_follow_exit {} {
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with_test_prefix "vfork child follow, finish after tcatch vfork" {
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global gdb_prompt
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global srcfile
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setup_gdb
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gdb_test_no_output "set follow-fork child"
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gdb_test "tcatch vfork" "Catchpoint .*(vfork).*"
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# HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
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# stop you in "_vfork".
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set test "continue to vfork"
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gdb_test_multiple "continue" $test {
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-re "vfork \\(\\) at .*$gdb_prompt $" {
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pass $test
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}
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-re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt " {
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pass $test
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}
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}
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set test "finish"
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gdb_test_multiple "finish" $test {
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-re "Run till exit from.*vfork.*exited normally.*$gdb_prompt " {
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setup_kfail "gdb/14762" *-*-*
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fail $test
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}
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-re "Run till exit from.*vfork.*pid = vfork \\(\\).*$gdb_prompt " {
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pass $test
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}
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-re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " {
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send_gdb "finish\n"
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exp_continue
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}
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}
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# The parent has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}}
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proc vfork_relations_in_info_inferiors { variant } {
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with_test_prefix "vfork relations in info inferiors" {
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global gdb_prompt
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setup_gdb
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gdb_test_no_output "set follow-fork child"
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set test "step over vfork"
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gdb_test_multiple "next" $test {
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-re "Attaching after .* vfork to child.*if \\(pid == 0\\).*$gdb_prompt " {
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pass "$test"
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}
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}
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gdb_test "info inferiors" \
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".*is vfork child of inferior 1.*is vfork parent of inferior 2" \
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"info inferiors shows vfork parent/child relation"
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if { $variant == "exec" } {
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global srcfile2
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set linenum [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}]
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set test "continue to bp"
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gdb_test_multiple "continue" $test {
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-re ".*xecuting new program.*Breakpoint.*vforked-prog.c:${linenum}.*$gdb_prompt " {
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pass $test
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}
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}
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} else {
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set test "continue to child exit"
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gdb_test_multiple "continue" $test {
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-re "exited normally.*$gdb_prompt " {
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pass $test
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}
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}
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}
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set test "vfork relation no longer appears in info inferiors"
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gdb_test_multiple "info inferiors" $test {
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-re "is vfork child of inferior 1.*$gdb_prompt $" {
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fail $test
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}
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-re "is vfork parent of inferior 2.*$gdb_prompt $" {
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fail $test
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}
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-re "$gdb_prompt $" {
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pass $test
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}
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}
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}}
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proc do_vfork_and_follow_parent_tests {} {
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global gdb_prompt
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# Try following the parent process by stepping through a call to
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# vfork. Do this without catchpoints.
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vfork_parent_follow_through_step
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# Try following the parent process by setting a breakpoint on the
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# other side of a vfork, and running to that point. Do this
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# without catchpoints.
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vfork_parent_follow_to_bp
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# Try catching a vfork, and stepping out to the parent.
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#
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tcatch_vfork_then_parent_follow
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}
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proc do_vfork_and_follow_child_tests_exec {} {
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# Try following the child process by just continuing through the
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# vfork, and letting the parent's breakpoint on "main" be auto-
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# magically reset in the child.
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#
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vfork_and_exec_child_follow_to_main_bp
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# Try following the child process by stepping through a call to
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# vfork. The child also executes an exec. Since the child cannot
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# be debugged until after it has exec'd, and since there's a bp on
|
|
# "main" in the parent, and since the bp's for the parent are
|
|
# recomputed in the exec'd child, the step through a vfork should
|
|
# land us in the "main" for the exec'd child, too.
|
|
#
|
|
vfork_and_exec_child_follow_through_step
|
|
|
|
# Try catching a vfork, and stepping out to the child.
|
|
#
|
|
tcatch_vfork_then_child_follow_exec
|
|
|
|
# Test the ability to follow both child and parent of a vfork. Do
|
|
# this without catchpoints.
|
|
# ??rehrauer: NYI. Will add testpoints here when implemented.
|
|
#
|
|
|
|
# Test the ability to have the debugger ask the user at vfork-time
|
|
# whether to follow the parent, child or both. Do this without
|
|
# catchpoints.
|
|
# ??rehrauer: NYI. Will add testpoints here when implemented.
|
|
#
|
|
|
|
# Step over a vfork in the child, do "info inferiors" and check the
|
|
# parent/child relation is displayed. Run the child over the exec,
|
|
# and confirm the relation is no longer displayed in "info
|
|
# inferiors".
|
|
#
|
|
vfork_relations_in_info_inferiors "exec"
|
|
}
|
|
|
|
proc do_vfork_and_follow_child_tests_exit {} {
|
|
# Try following the child process by just continuing through the
|
|
# vfork, and letting the child exit.
|
|
#
|
|
vfork_child_follow_to_exit
|
|
|
|
# Try catching a vfork, and stepping out to the child.
|
|
#
|
|
tcatch_vfork_then_child_follow_exit
|
|
|
|
# Step over a vfork in the child, do "info inferiors" and check the
|
|
# parent/child relation is displayed. Run the child to completion,
|
|
# and confirm the relation is no longer displayed in "info
|
|
# inferiors".
|
|
#
|
|
vfork_relations_in_info_inferiors "exit"
|
|
}
|
|
|
|
with_test_prefix "check vfork support" {
|
|
# Check that vfork catchpoints are supported, as an indicator for
|
|
# whether vfork-following is supported.
|
|
check_vfork_catchpoints
|
|
}
|
|
|
|
# Follow parent and follow child vfork tests with a child that execs.
|
|
with_test_prefix "exec" {
|
|
# These are tests of gdb's ability to follow the parent of a Unix
|
|
# vfork system call. The child will subsequently call a variant
|
|
# of the Unix exec system call.
|
|
do_vfork_and_follow_parent_tests
|
|
|
|
# These are tests of gdb's ability to follow the child of a Unix
|
|
# vfork system call. The child will subsequently call a variant
|
|
# of a Unix exec system call.
|
|
#
|
|
do_vfork_and_follow_child_tests_exec
|
|
}
|
|
|
|
# Switch to test the case of the child exiting. We can't use
|
|
# standard_testfile here because we don't want to overwrite the binary
|
|
# of the previous tests.
|
|
set testfile "foll-vfork-exit"
|
|
set srcfile ${testfile}.c
|
|
set binfile [standard_output_file ${testfile}]
|
|
|
|
if {[build_executable $testfile.exp $testfile $srcfile] == -1} {
|
|
untested "failed to build $testfile"
|
|
return
|
|
}
|
|
|
|
# Follow parent and follow child vfork tests with a child that exits.
|
|
with_test_prefix "exit" {
|
|
# These are tests of gdb's ability to follow the parent of a Unix
|
|
# vfork system call. The child will subsequently exit.
|
|
do_vfork_and_follow_parent_tests
|
|
|
|
# These are tests of gdb's ability to follow the child of a Unix
|
|
# vfork system call. The child will subsequently exit.
|
|
#
|
|
do_vfork_and_follow_child_tests_exit
|
|
}
|
|
|
|
set timeout $oldtimeout
|
|
return 0
|