410 lines
15 KiB
Text
410 lines
15 KiB
Text
# Copyright 1997, 1999, 2007, 2008, 2009, 2010
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# 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 { [is_remote target] || ![isnative] } then {
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continue
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}
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set prms_id 0
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set bug_id 0
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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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global srcfile
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set testfile "foll-vfork"
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set testfile2 "vforked-prog"
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set srcfile ${testfile}.c
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set srcfile2 ${testfile2}.c
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set binfile ${objdir}/${subdir}/${testfile}
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set binfile2 ${objdir}/${subdir}/${testfile2}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested foll-vfork.exp
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return -1
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}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable {debug}] != "" } {
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untested foll-vfork.exp
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return -1
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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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# 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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proc check_vfork_catchpoints {} {
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global gdb_prompt
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global has_vfork_catchpoints
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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 vfork catchpoints.*$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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global gdb_prompt
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send_gdb "set follow-fork parent\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow-fork parent, vfork through step"}
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timeout {fail "set follow-fork parent, vfork through step"}
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}
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send_gdb "next\n"
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gdb_expect {
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-re "Detaching after fork from.*13.*$gdb_prompt "\
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{pass "vfork parent follow, through step"}
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-re "$gdb_prompt $" {fail "vfork parent follow, through step"}
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timeout {fail "(timeout) vfork parent follow, through step" }
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any gdb_expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}
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proc vfork_parent_follow_to_bp {} {
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global gdb_prompt
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global srcfile
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send_gdb "set follow-fork parent\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow-fork parent, vfork to bp"}
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timeout {fail "set follow-fork parent, vfork to bp"}
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}
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send_gdb "break ${srcfile}:18\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "break, vfork to bp"}
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timeout {fail "break, vfork to bp"}
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}
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send_gdb "continue\n"
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gdb_expect {
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-re ".*Detaching after fork from child process.*Breakpoint.*18.*$gdb_prompt "\
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{pass "vfork parent follow, to bp"}
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-re "$gdb_prompt $" {fail "vfork parent follow, to bp"}
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timeout {fail "(timeout) vfork parent follow, to bp" }
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}
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proc vfork_and_exec_child_follow_to_main_bp {} {
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global gdb_prompt
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global binfile
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send_gdb "set follow-fork child\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow-fork child, vfork and exec to main bp"}
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timeout {fail "set follow-fork child, vfork and exec to main bp"}
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}
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send_gdb "continue\n"
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gdb_expect {
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-re "Attaching after.* vfork to.*xecuting new program.*Breakpoint.*vforked-prog.c:9.*$gdb_prompt "\
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{pass "vfork and exec child follow, to main bp"}
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-re "$gdb_prompt $" {fail "vfork and exec child follow, to main bp"}
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timeout {fail "(timeout) vfork and exec child follow, to main bp" }
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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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# Explicitly kill this child, or a subsequent rerun actually runs
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# the exec'd child, not the original program...
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send_gdb "kill\n"
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gdb_expect {
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-re ".*Kill the program being debugged.*y or n. $" {
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send_gdb "y\n"
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send_gdb "file $binfile\n"
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gdb_expect {
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-re ".*Load new symbol table from.*y or n. $" {
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send_gdb "y\n"
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gdb_expect {
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-re "Reading symbols from.*$gdb_prompt $" {}
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timeout { fail "loading symbols (timeout)"; return }
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}
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}
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-re ".*gdb_prompt $" {}
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timeout { fail "loading symbols (timeout)"; return }
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}
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}
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-re ".*$gdb_prompt $" {}
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timeout { fail "killing inferior (timeout)" ; return }
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}
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}
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proc vfork_and_exec_child_follow_through_step {} {
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global gdb_prompt
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global binfile
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# This test cannot be performed prior to HP-UX 10.30, because ptrace-based
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# debugging of a vforking program basically doesn't allow the child to do
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# things like hit a breakpoint between a vfork and exec. This means that
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# saying "set follow-fork child; next" at a vfork() call won't work, because
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# the implementation of "next" sets a "step resume" breakpoint at the
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# return from the vfork(), which the child will hit on its way to exec'ing.
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#
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if { ![istarget "hppa*-*-hpux11.*"] } {
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verbose "vfork child-following next test ignored for non-hppa or pre-HP/UX-10.30 targets."
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return 0
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}
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send_gdb "set follow-fork child\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow-fork child, vfork and exec through step"}
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timeout {fail "set follow-fork child, vfork and exec through step"}
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}
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send_gdb "next\n"
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gdb_expect {
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-re "Attaching after fork to.*Executing new program.*Breakpoint.*vforked-prog.c:9.*$gdb_prompt "\
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{pass "vfork and exec child follow, through step"}
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-re "$gdb_prompt $" {fail "vfork and exec child follow, through step"}
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timeout {fail "(timeout) vfork and exec child follow, through step" }
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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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# Explicitly kill this child, or a subsequent rerun actually runs
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# the exec'd child, not the original program...
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send_gdb "kill\n"
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gdb_expect {
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-re ".*Kill the program being debugged.*y or n. $" {
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send_gdb "y\n"
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send_gdb "file $binfile\n"
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gdb_expect {
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-re ".*Load new symbol table from.*y or n. $" {
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send_gdb "y\n"
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gdb_expect {
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-re "Reading symbols from.*$gdb_prompt $" {}
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timeout { fail "loading symbols (timeout)"; return }
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}
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}
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-re ".*gdb_prompt $" {}
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timeout { fail "loading symbols (timeout)"; return }
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}
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}
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-re ".*$gdb_prompt $" {}
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timeout { fail "killing inferior (timeout)" ; return }
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}
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}
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proc tcatch_vfork_then_parent_follow {} {
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global gdb_prompt
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global srcfile
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send_gdb "set follow-fork parent\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow-fork parent, tcatch vfork"}
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timeout {fail "set follow-fork parent, tcatch vfork"}
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}
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send_gdb "tcatch vfork\n"
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gdb_expect {
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-re "Catchpoint .*(vfork).*$gdb_prompt $"\
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{pass "vfork parent follow, set tcatch vfork"}
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-re "$gdb_prompt $" {fail "vfork parent follow, set tcatch vfork"}
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timeout {fail "(timeout) vfork parent follow, set tcatch vfork"}
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}
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send_gdb "continue\n"
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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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gdb_expect {
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-re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt "\
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{pass "vfork parent follow, tcatch vfork"}
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-re "vfork \\(\\) at.*$gdb_prompt "\
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{pass "vfork parent follow, tcatch vfork"}
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-re "$gdb_prompt $" {fail "vfork parent follow, tcatch vfork"}
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timeout {fail "(timeout) vfork parent follow, tcatch vfork"}
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}
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send_gdb "finish\n"
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gdb_expect {
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-re "Run till exit from.*vfork.*0x\[0-9a-fA-F\]* in main .* at .*${srcfile}:12.*$gdb_prompt "\
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{pass "vfork parent follow, finish after tcatch vfork"}
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-re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " {
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send_gdb "finish\n"
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exp_continue
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}
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-re "$gdb_prompt $" {fail "vfork parent follow, finish after tcatch vfork"}
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timeout {fail "(timeout) vfork parent follow, finish after tcatch vfork" }
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}
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proc tcatch_vfork_then_child_follow {} {
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global gdb_prompt
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global srcfile
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global srcfile2
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send_gdb "set follow-fork child\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow-fork child, tcatch vfork"}
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timeout {fail "set follow-fork child, tcatch vfork"}
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}
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send_gdb "tcatch vfork\n"
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gdb_expect {
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-re "Catchpoint .*(vfork).*$gdb_prompt $"\
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{pass "vfork child follow, set tcatch vfork"}
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-re "$gdb_prompt $" {fail "vfork child follow, set tcatch vfork"}
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timeout {fail "(timeout) vfork child follow, set tcatch vfork"}
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}
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send_gdb "continue\n"
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# HP-UX 10.20 seems to stop you in "vfork", while more recent HP-UXs
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# stop you in "_vfork".
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gdb_expect {
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-re "vfork \\(\\) at .*$gdb_prompt $"\
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{pass "vfork child follow, tcatch vfork"}
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-re "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*$gdb_prompt "\
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{pass "vfork child follow, tcatch vfork"}
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-re "$gdb_prompt $" {fail "vfork child follow, tcatch vfork"}
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timeout {fail "(timeout) vfork child follow, tcatch vfork"}
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}
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send_gdb "finish\n"
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gdb_expect {
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-re "Run till exit from.*vfork.*${srcfile}:12.*$gdb_prompt "\
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{pass "vfork child follow, finish after tcatch vfork"}
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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}:9.*$gdb_prompt "\
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{pass "vfork child follow, finish after tcatch vfork (followed exec)"}
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-re "$gdb_prompt $" {fail "vfork child follow, finish after tcatch vfork"}
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timeout {fail "(timeout) vfork child follow, finish after tcatch vfork" }
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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 do_vfork_and_exec_tests {} {
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global gdb_prompt
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# Check that vfork catchpoints are supported, as an indicator for whether
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# vfork-following is supported.
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if [runto_main] then { check_vfork_catchpoints }
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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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if [runto_main] then { 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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if [runto_main] then { vfork_parent_follow_to_bp }
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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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if [runto_main] then { 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
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# "main" in the parent, and since the bp's for the parent are
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# recomputed in the exec'd child, the step through a vfork should
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# land us in the "main" for the exec'd child, too.
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#
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if [runto_main] then { vfork_and_exec_child_follow_through_step }
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# Try catching a vfork, and stepping out to the parent.
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#
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if [runto_main] then { tcatch_vfork_then_parent_follow }
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# Try catching a vfork, and stepping out to the child.
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#
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if [runto_main] then { tcatch_vfork_then_child_follow }
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# Test the ability to follow both child and parent of a vfork. Do
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# this without catchpoints.
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# ??rehrauer: NYI. Will add testpoints here when implemented.
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#
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# Test the ability to have the debugger ask the user at vfork-time
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# whether to follow the parent, child or both. Do this without
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# catchpoints.
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# ??rehrauer: NYI. Will add testpoints here when implemented.
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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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# The "Detaching..." and "Attaching..." messages may be hidden by
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# default.
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gdb_test "set verbose" ""
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# This is a test of gdb's ability to follow the parent or child
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# of a Unix vfork() system call. (The child will subsequently
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# call a variant of a Unix exec() system call.)
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#
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do_vfork_and_exec_tests
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set timeout $oldtimeout
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return 0
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