mirror of
https://sourceware.org/git/binutils-gdb.git
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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
502 lines
15 KiB
Plaintext
502 lines
15 KiB
Plaintext
# Copyright 1997-2022 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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# 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 "*-linux*"]} then {
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continue
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}
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standard_testfile
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set compile_options debug
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if {[build_executable $testfile.exp $testfile $srcfile $compile_options] == -1} {
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untested "failed to compile main testcase"
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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 secondary testcase"
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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 srcfile
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clean_restart $testfile
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if ![runto_main] {
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return -code return
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}
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set tbreak_line [gdb_get_line_number " VFORK " $srcfile]
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gdb_test "tbreak ${tbreak_line}"
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gdb_continue_to_breakpoint ".*"
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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 "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 "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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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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# 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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# 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 continue_to_vfork {} {
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global gdb_prompt
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# A vfork catchpoint may stop in either "vfork" or "_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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}
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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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continue_to_vfork
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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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continue_to_vfork
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set linenum1 [gdb_get_line_number "pid = vfork ();"]
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set linenum2 [gdb_get_line_number "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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continue_to_vfork
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set test "finish"
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gdb_test_multiple "finish" $test {
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-re "Run till exit from.*vfork.*exited normally.*$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 parent of inferior 2.*is vfork child of inferior 1" \
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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 "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 -wrap "is vfork child of inferior 1.*" {
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fail $test
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}
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-re -wrap "is vfork parent of inferior 2.*" {
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fail $test
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}
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-re -wrap "" {
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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
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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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vfork_and_exec_child_follow_through_step
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# Try catching a vfork, and stepping out to the child.
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#
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tcatch_vfork_then_child_follow_exec
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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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# Step over a vfork in the child, do "info inferiors" and check the
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# parent/child relation is displayed. Run the child over the exec,
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# and confirm the relation is no longer displayed in "info
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# inferiors".
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#
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vfork_relations_in_info_inferiors "exec"
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}
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proc do_vfork_and_follow_child_tests_exit {} {
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# Try following the child process by just continuing through the
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# vfork, and letting the child exit.
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#
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vfork_child_follow_to_exit
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# Try catching a vfork, and stepping out to the child.
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#
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tcatch_vfork_then_child_follow_exit
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# Step over a vfork in the child, do "info inferiors" and check the
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# parent/child relation is displayed. Run the child to completion,
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# and confirm the relation is no longer displayed in "info
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# inferiors".
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#
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vfork_relations_in_info_inferiors "exit"
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}
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with_test_prefix "check vfork support" {
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# Check that vfork catchpoints are supported, as an indicator for
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# whether vfork-following is supported.
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check_vfork_catchpoints
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}
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# Follow parent and follow child vfork tests with a child that execs.
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with_test_prefix "exec" {
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# These are tests of gdb's ability to follow the parent of a Unix
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# vfork system call. The child will subsequently call a variant
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# of the Unix exec system call.
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do_vfork_and_follow_parent_tests
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# These are tests of gdb's ability to follow the child of a Unix
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# vfork system call. The child will subsequently call a variant
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# of a Unix exec system call.
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#
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do_vfork_and_follow_child_tests_exec
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}
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# Switch to test the case of the child exiting. We can't use
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# standard_testfile here because we don't want to overwrite the binary
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# of the previous tests.
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set testfile "foll-vfork-exit"
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set srcfile ${testfile}.c
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set binfile [standard_output_file ${testfile}]
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if {[build_executable $testfile.exp $testfile $srcfile] == -1} {
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untested "failed to build $testfile"
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return
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}
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# Follow parent and follow child vfork tests with a child that exits.
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with_test_prefix "exit" {
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# These are tests of gdb's ability to follow the parent of a Unix
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# vfork system call. The child will subsequently exit.
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do_vfork_and_follow_parent_tests
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# These are tests of gdb's ability to follow the child of a Unix
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# vfork system call. The child will subsequently exit.
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#
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do_vfork_and_follow_child_tests_exit
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}
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set timeout $oldtimeout
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return 0
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