| # Copyright 1997, 1999, 2007-2012 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 |
| } |
| |
| # 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 |
| } |
| |
| # 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 |
| } |
| |
| # 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. $" { |
| gdb_test_no_output "y" "" |
| 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. $" { |
| gdb_test_no_output "y" "" |
| 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 |
