/gdb/testsuite/gdb.base/foll-vfork.exp
Expect | 408 lines | 256 code | 46 blank | 106 comment | 20 complexity | 74c819651aebd26f227718cf3ec0b8fe MD5 | raw file
- # Copyright 1997, 1999, 2007, 2008, 2009, 2010, 2011
- # Free Software Foundation, Inc.
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 3 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program. If not, see <http://www.gnu.org/licenses/>.
- if { [is_remote target] || ![isnative] } then {
- continue
- }
- # NOTE drow/2002-12-06: I don't know what the referenced kernel problem
- # is, but it appears to be fixed in recent HP/UX versions.
- ##if [istarget "hppa2.0w-hp-hpux*"] {
- ## warning "Don't run gdb.base/foll-vfork.exp until JAGaa43495 kernel problem is fixed."
- ## return 0
- ##}
- global srcfile
- set testfile "foll-vfork"
- set testfile2 "vforked-prog"
- set srcfile ${testfile}.c
- set srcfile2 ${testfile2}.c
- set binfile ${objdir}/${subdir}/${testfile}
- set binfile2 ${objdir}/${subdir}/${testfile2}
- if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
- untested foll-vfork.exp
- return -1
- }
- if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
- untested foll-vfork.exp
- return -1
- }
- # Until "set follow-fork-mode" and "catch vfork" are implemented on
- # other targets...
- #
- if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then {
- continue
- }
- # Test to see if we are on an HP-UX 10.20 and if so,
- # do not run these tests as catching vfork is disabled for
- # 10.20.
- if [istarget "hppa*-hp-hpux10.20"] then {
- return 0
- }
- # A few of these tests require a little more time than the standard
- # timeout allows.
- set oldtimeout $timeout
- set timeout [expr "$timeout + 10"]
- proc check_vfork_catchpoints {} {
- global gdb_prompt
- global has_vfork_catchpoints
- # Verify that the system supports "catch vfork".
- gdb_test "catch vfork" "Catchpoint \[0-9\]* \\(vfork\\)" "insert first vfork catchpoint"
- set has_vfork_catchpoints 0
- gdb_test_multiple "continue" "continue to first vfork catchpoint" {
- -re ".*Your system does not support this type\r\nof catchpoint.*$gdb_prompt $" {
- unsupported "continue to first vfork catchpoint"
- }
- -re ".*Catchpoint.*$gdb_prompt $" {
- set has_vfork_catchpoints 1
- pass "continue to first vfork catchpoint"
- }
- }
- if {$has_vfork_catchpoints == 0} {
- unsupported "vfork catchpoints"
- return -code return
- }
- }
- proc vfork_parent_follow_through_step {} {
- global gdb_prompt
- send_gdb "set follow-fork parent\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "set follow-fork parent, vfork through step"}
- timeout {fail "set follow-fork parent, vfork through step"}
- }
- send_gdb "next\n"
- gdb_expect {
- -re "Detaching after fork from.*13.*$gdb_prompt "\
- {pass "vfork parent follow, through step"}
- -re "$gdb_prompt $" {fail "vfork parent follow, through step"}
- timeout {fail "(timeout) vfork parent follow, through step" }
- }
- # The child has been detached; allow time for any output it might
- # generate to arrive, so that output doesn't get confused with
- # any gdb_expected debugger output from a subsequent testpoint.
- #
- exec sleep 1
- }
- proc vfork_parent_follow_to_bp {} {
- global gdb_prompt
- global srcfile
- send_gdb "set follow-fork parent\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "set follow-fork parent, vfork to bp"}
- timeout {fail "set follow-fork parent, vfork to bp"}
- }
- send_gdb "break ${srcfile}:18\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "break, vfork to bp"}
- timeout {fail "break, vfork to bp"}
- }
- send_gdb "continue\n"
- gdb_expect {
- -re ".*Detaching after fork from child process.*Breakpoint.*18.*$gdb_prompt "\
- {pass "vfork parent follow, to bp"}
- -re "$gdb_prompt $" {fail "vfork parent follow, to bp"}
- timeout {fail "(timeout) vfork parent follow, to bp" }
- }
- # The child has been detached; allow time for any output it might
- # generate to arrive, so that output doesn't get confused with
- # any expected debugger output from a subsequent testpoint.
- #
- exec sleep 1
- }
- proc vfork_and_exec_child_follow_to_main_bp {} {
- global gdb_prompt
- global binfile
- send_gdb "set follow-fork child\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "set follow-fork child, vfork and exec to main bp"}
- timeout {fail "set follow-fork child, vfork and exec to main bp"}
- }
- send_gdb "continue\n"
- gdb_expect {
- -re "Attaching after.* vfork to.*xecuting new program.*Breakpoint.*vforked-prog.c:9.*$gdb_prompt "\
- {pass "vfork and exec child follow, to main bp"}
- -re "$gdb_prompt $" {fail "vfork and exec child follow, to main bp"}
- timeout {fail "(timeout) vfork and exec child follow, to main bp" }
- }
- # The parent has been detached; allow time for any output it might
- # generate to arrive, so that output doesn't get confused with
- # any gdb_expected debugger output from a subsequent testpoint.
- #
- exec sleep 1
- # Explicitly kill this child, or a subsequent rerun actually runs
- # the exec'd child, not the original program...
- send_gdb "kill\n"
- gdb_expect {
- -re ".*Kill the program being debugged.*y or n. $" {
- send_gdb "y\n"
- send_gdb "file $binfile\n"
- gdb_expect {
- -re ".*Load new symbol table from.*y or n. $" {
- send_gdb "y\n"
- gdb_expect {
- -re "Reading symbols from.*$gdb_prompt $" {}
- timeout { fail "loading symbols (timeout)"; return }
- }
- }
- -re ".*gdb_prompt $" {}
- timeout { fail "loading symbols (timeout)"; return }
- }
- }
- -re ".*$gdb_prompt $" {}
- timeout { fail "killing inferior (timeout)" ; return }
- }
- }
- proc vfork_and_exec_child_follow_through_step {} {
- global gdb_prompt
- global binfile
- # This test cannot be performed prior to HP-UX 10.30, because ptrace-based
- # debugging of a vforking program basically doesn't allow the child to do
- # things like hit a breakpoint between a vfork and exec. This means that
- # saying "set follow-fork child; next" at a vfork() call won't work, because
- # the implementation of "next" sets a "step resume" breakpoint at the
- # return from the vfork(), which the child will hit on its way to exec'ing.
- #
- if { ![istarget "hppa*-*-hpux11.*"] } {
- verbose "vfork child-following next test ignored for non-hppa or pre-HP/UX-10.30 targets."
- return 0
- }
- send_gdb "set follow-fork child\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "set follow-fork child, vfork and exec through step"}
- timeout {fail "set follow-fork child, vfork and exec through step"}
- }
- send_gdb "next\n"
- gdb_expect {
- -re "Attaching after fork to.*Executing new program.*Breakpoint.*vforked-prog.c:9.*$gdb_prompt "\
- {pass "vfork and exec child follow, through step"}
- -re "$gdb_prompt $" {fail "vfork and exec child follow, through step"}
- timeout {fail "(timeout) vfork and exec child follow, through step" }
- }
- # The parent has been detached; allow time for any output it might
- # generate to arrive, so that output doesn't get confused with
- # any expected debugger output from a subsequent testpoint.
- #
- exec sleep 1
- # Explicitly kill this child, or a subsequent rerun actually runs
- # the exec'd child, not the original program...
- send_gdb "kill\n"
- gdb_expect {
- -re ".*Kill the program being debugged.*y or n. $" {
- send_gdb "y\n"
- send_gdb "file $binfile\n"
- gdb_expect {
- -re ".*Load new symbol table from.*y or n. $" {
- send_gdb "y\n"
- gdb_expect {
- -re "Reading symbols from.*$gdb_prompt $" {}
- timeout { fail "loading symbols (timeout)"; return }
- }
- }
- -re ".*gdb_prompt $" {}
- timeout { fail "loading symbols (timeout)"; return }
- }
- }
- -re ".*$gdb_prompt $" {}
- timeout { fail "killing inferior (timeout)" ; return }
- }
- }
- proc tcatch_vfork_then_parent_follow {} {
- global gdb_prompt
- global srcfile
- send_gdb "set follow-fork parent\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "set follow-fork parent, tcatch vfork"}
- timeout {fail "set follow-fork parent, tcatch vfork"}
- }
- send_gdb "tcatch vfork\n"
- gdb_expect {
- -re "Catchpoint .*(vfork).*$gdb_prompt $"\
- {pass "vfork parent follow, set tcatch vfork"}
- -re "$gdb_prompt $" {fail "vfork parent follow, set tcatch vfork"}
- timeout {fail "(timeout) vfork parent follow, set tcatch vfork"}
- }
- send_gdb "continue\n"
- # HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
- # stop you in "_vfork".
- gdb_expect {
- -re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt "\
- {pass "vfork parent follow, tcatch vfork"}
- -re "vfork \\(\\) at.*$gdb_prompt "\
- {pass "vfork parent follow, tcatch vfork"}
- -re "$gdb_prompt $" {fail "vfork parent follow, tcatch vfork"}
- timeout {fail "(timeout) vfork parent follow, tcatch vfork"}
- }
- send_gdb "finish\n"
- gdb_expect {
- -re "Run till exit from.*vfork.*0x\[0-9a-fA-F\]* in main .* at .*${srcfile}:12.*$gdb_prompt "\
- {pass "vfork parent follow, finish after tcatch vfork"}
- -re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " {
- send_gdb "finish\n"
- exp_continue
- }
- -re "$gdb_prompt $" {fail "vfork parent follow, finish after tcatch vfork"}
- timeout {fail "(timeout) vfork parent follow, finish after tcatch vfork" }
- }
- # The child has been detached; allow time for any output it might
- # generate to arrive, so that output doesn't get confused with
- # any expected debugger output from a subsequent testpoint.
- #
- exec sleep 1
- }
- proc tcatch_vfork_then_child_follow {} {
- global gdb_prompt
- global srcfile
- global srcfile2
- send_gdb "set follow-fork child\n"
- gdb_expect {
- -re "$gdb_prompt $" {pass "set follow-fork child, tcatch vfork"}
- timeout {fail "set follow-fork child, tcatch vfork"}
- }
- send_gdb "tcatch vfork\n"
- gdb_expect {
- -re "Catchpoint .*(vfork).*$gdb_prompt $"\
- {pass "vfork child follow, set tcatch vfork"}
- -re "$gdb_prompt $" {fail "vfork child follow, set tcatch vfork"}
- timeout {fail "(timeout) vfork child follow, set tcatch vfork"}
- }
- send_gdb "continue\n"
- # HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
- # stop you in "_vfork".
- gdb_expect {
- -re "vfork \\(\\) at .*$gdb_prompt $"\
- {pass "vfork child follow, tcatch vfork"}
- -re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt "\
- {pass "vfork child follow, tcatch vfork"}
- -re "$gdb_prompt $" {fail "vfork child follow, tcatch vfork"}
- timeout {fail "(timeout) vfork child follow, tcatch vfork"}
- }
- send_gdb "finish\n"
- gdb_expect {
- -re "Run till exit from.*vfork.*${srcfile}:12.*$gdb_prompt "\
- {pass "vfork child follow, finish after tcatch vfork"}
- -re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " {
- send_gdb "finish\n"
- exp_continue
- }
- -re "Run till exit from.*vfork.*${srcfile2}:9.*$gdb_prompt "\
- {pass "vfork child follow, finish after tcatch vfork (followed exec)"}
- -re "$gdb_prompt $" {fail "vfork child follow, finish after tcatch vfork"}
- timeout {fail "(timeout) vfork child follow, finish after tcatch vfork" }
- }
- # The parent has been detached; allow time for any output it might
- # generate to arrive, so that output doesn't get confused with
- # any expected debugger output from a subsequent testpoint.
- #
- exec sleep 1
- }
- proc do_vfork_and_exec_tests {} {
- global gdb_prompt
- # Check that vfork catchpoints are supported, as an indicator for whether
- # vfork-following is supported.
- if [runto_main] then { check_vfork_catchpoints }
- # Try following the parent process by stepping through a call to
- # vfork. Do this without catchpoints.
- if [runto_main] then { vfork_parent_follow_through_step }
- # Try following the parent process by setting a breakpoint on the
- # other side of a vfork, and running to that point. Do this
- # without catchpoints.
- if [runto_main] then { vfork_parent_follow_to_bp }
- # Try following the child process by just continuing through the
- # vfork, and letting the parent's breakpoint on "main" be auto-
- # magically reset in the child.
- #
- if [runto_main] then { vfork_and_exec_child_follow_to_main_bp }
- # Try following the child process by stepping through a call to
- # vfork. The child also executes an exec. Since the child cannot
- # 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.
- #
- if [runto_main] then { vfork_and_exec_child_follow_through_step }
- # Try catching a vfork, and stepping out to the parent.
- #
- if [runto_main] then { tcatch_vfork_then_parent_follow }
- # Try catching a vfork, and stepping out to the child.
- #
- if [runto_main] then { tcatch_vfork_then_child_follow }
- # 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.
- #
- }
- # Start with a fresh gdb
- gdb_exit
- gdb_start
- gdb_reinitialize_dir $srcdir/$subdir
- gdb_load ${binfile}
- # The "Detaching..." and "Attaching..." messages may be hidden by
- # default.
- gdb_test_no_output "set verbose"
- # This is a test of gdb's ability to follow the parent or child
- # of a Unix vfork() system call. (The child will subsequently
- # call a variant of a Unix exec() system call.)
- #
- do_vfork_and_exec_tests
- set timeout $oldtimeout
- return 0