608 lines
17 KiB
Plaintext
608 lines
17 KiB
Plaintext
# Copyright 2010 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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# This test only works on GNU/Linux.
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if { ![isnative] || [is_remote host] || ![istarget *-linux*] || [skip_shlib_tests]} {
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continue
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}
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load_lib prelink-support.exp
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set test "break-interp"
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set binprefix ${objdir}/${subdir}/${test}
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# Only to get the $interp_system name.
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set srcfile_test "start.c"
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set binfile_test ${test}-test
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set binfile_lib ${objdir}/${subdir}/${test}.so
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set srcfile "${test}-main.c"
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set srcfile_lib "${test}-lib.c"
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if [get_compiler_info ${binfile_lib}] {
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return -1
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}
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# Use -soname so that the new library gets copied by build_executable_own_libs.
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if {[gdb_compile_shlib ${srcdir}/${subdir}/${srcfile_lib} ${binfile_lib} [list debug additional_flags=-Wl,-soname,${test}.so]] != ""} {
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return -1
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}
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if {[build_executable ${test}.exp $binfile_test ${srcfile_test} {}] == -1} {
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return -1
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}
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# Note: The separate debug info file content build-id/crc32 are not verified
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# contrary to the GDB search algorithm skipping non-matching ones.
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proc system_debug_get {exec} {
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global debug_root
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set exec_build_id_debug [build_id_debug_filename_get $exec]
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set debug_base "[file tail $exec].debug"
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set exec_dir [file dirname $exec]
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# isfile returns 1 even for symlinks to files.
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set retval $debug_root/$exec_build_id_debug
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if [file isfile $retval] {
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return $retval
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}
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set retval $exec_dir/$debug_base
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if [file isfile $retval] {
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return $retval
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}
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set retval $exec_dir/.debug/$debug_base
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if [file isfile $retval] {
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return $retval
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}
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set retval $debug_root/$exec_dir/$debug_base
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if [file isfile $retval] {
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return $retval
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}
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return ""
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}
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gdb_exit
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gdb_start
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set debug_root ""
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set test "show debug-file-directory"
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gdb_test_multiple $test $test {
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-re "The directory where separate debug symbols are searched for is \"(.*)\".\r\n$gdb_prompt $" {
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set debug_root $expect_out(1,string)
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}
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}
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set interp_system [section_get ${objdir}/${subdir}/$binfile_test .interp]
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set interp_system_debug [system_debug_get $interp_system]
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verbose -log "$interp_system has debug $interp_system_debug"
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proc prelinkNO {arg {name ""}} {
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return [prelink_no $arg $name]
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}
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proc prelinkYES {arg {name ""}} {
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return [prelink_yes $arg $name]
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}
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proc strip_debug {dest} {
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set test "strip [file tail $dest]"
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set strip_program [transform strip]
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set command "exec $strip_program --strip-debug $dest"
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verbose -log "command is $command"
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if [catch $command] {
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fail $test
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return 0
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} else {
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pass $test
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return 1
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}
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}
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# `runto' does not check we stopped really at the function we specified.
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# DISPLACEMENT can be "NONE", "ZERO" or "NONZERO"
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proc reach {func command displacement} {
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global gdb_prompt expect_out
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global pf_prefix
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set old_ldprefix $pf_prefix
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lappend pf_prefix "reach-$func:"
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if [gdb_breakpoint $func allow-pending] {
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set test "reach"
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set test_displacement "seen displacement message as $displacement"
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gdb_test_multiple $command $test {
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-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
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# Missing "$gdb_prompt $" is intentional.
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if {$expect_out(1,string) == "0x0"} {
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set case "ZERO"
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} else {
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set case "NONZERO"
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}
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if {$displacement == $case} {
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pass $test_displacement
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set displacement "FOUND-$displacement"
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} else {
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fail $test_displacement
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}
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exp_continue
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}
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-re "Breakpoint \[0-9\]+, $func \\(.*\\) at .*:\[0-9\]+\r\n.*$gdb_prompt $" {
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pass $test
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}
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-re "Breakpoint \[0-9\]+, \[0-9xa-f\]+ in $func \\(\\).*\r\n$gdb_prompt $" {
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pass $test
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}
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}
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if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
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fail $test_displacement
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}
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}
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set pf_prefix $old_ldprefix
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}
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proc test_core {file displacement} {
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global srcdir subdir gdb_prompt expect_out
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set corefile [core_find $file {} "segv"]
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if {$corefile == ""} {
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return
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}
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global pf_prefix
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set old_ldprefix $pf_prefix
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lappend pf_prefix "core:"
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gdb_exit
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gdb_start
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# Clear it to never find any separate debug infos in $debug_root.
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gdb_test_no_output "set debug-file-directory" \
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"set debug-file-directory for core"
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load $file
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# Print the "PIE (Position Independent Executable) displacement" message.
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gdb_test_no_output "set verbose on"
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set test "core loaded"
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set test_displacement "seen displacement message as $displacement"
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gdb_test_multiple "core-file $corefile" $test {
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-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
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# Missing "$gdb_prompt $" is intentional.
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if {$expect_out(1,string) == "0x0"} {
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set case "ZERO"
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} else {
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set case "NONZERO"
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}
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if {$displacement == $case} {
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pass $test_displacement
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set displacement "FOUND-$displacement"
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} else {
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fail $test_displacement
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}
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exp_continue
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}
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-re "Core was generated by .*\r\n#0 .*$gdb_prompt $" {
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# Do not check the binary filename as it may be truncated.
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pass $test
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}
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}
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if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
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fail $test_displacement
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}
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gdb_test "bt" "#\[0-9\]+ +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#\[0-9\]+ +\[^\r\n\]*\\mmain\\M.*" "core main bt"
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set pf_prefix $old_ldprefix
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}
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proc test_attach_gdb {file pid displacement prefix} {
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global gdb_prompt expect_out
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global pf_prefix
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set old_ldprefix $pf_prefix
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lappend pf_prefix "$prefix:"
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gdb_exit
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gdb_start
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# Print the "PIE (Position Independent Executable) displacement" message.
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gdb_test_no_output "set verbose on"
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if {$file != ""} {
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gdb_test "file $file" "Reading symbols from .*done\\." "file"
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}
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set test "attach"
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gdb_test_multiple "attach $pid" $test {
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-re "Attaching to (program: .*, )?process $pid\r\n" {
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# Missing "$gdb_prompt $" is intentional.
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pass $test
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}
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}
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set test "attach final prompt"
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set test_displacement "seen displacement message as $displacement"
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gdb_test_multiple "" $test {
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-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
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# Missing "$gdb_prompt $" is intentional.
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if {$expect_out(1,string) == "0x0"} {
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set case "ZERO"
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} else {
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set case "NONZERO"
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}
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if {$displacement == $case} {
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pass $test_displacement
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set displacement "FOUND-$displacement"
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} else {
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fail $test_displacement
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}
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exp_continue
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}
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-re "$gdb_prompt $" {
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pass $test
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}
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}
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if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
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fail $test_displacement
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}
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gdb_test "bt" "#\[0-9\]+ +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#\[0-9\]+ +\[^\r\n\]*\\mmain\\M.*" "attach main bt"
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gdb_exit
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set pf_prefix $old_ldprefix
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}
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proc test_attach {file displacement {relink_args ""}} {
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global board_info
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gdb_exit
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set test "sleep function started"
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set command "${file} sleep"
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set res [remote_spawn host $command];
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if { $res < 0 || $res == "" } {
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perror "Spawning $command failed."
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fail $test
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return
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}
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set pid [exp_pid -i $res]
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gdb_expect {
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-re "sleeping\r\n" {
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pass $test
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}
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eof {
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fail "$test (eof)"
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return
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}
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timeout {
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fail "$test (timeout)"
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return
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}
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}
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if {$relink_args == ""} {
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test_attach_gdb "" $pid $displacement "attach"
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} else {
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# These could be rather passed as arguments.
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global exec interp_saved interp
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foreach relink {YES NO} {
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# Formerly this test was testing only prelinking of $EXEC. As the
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# prelink command automatically prelinks all of $EXEC's libraries,
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# even $INTERP got prelinked. Therefore, we formerly had to
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# `[file_copy $interp_saved $interp]' to make $INTERP not affected
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# by this prelinking of $EXEC.
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#
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# But now we need to test even prelinking of $INTERP. We could
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# create a separate test to test just the $INTERP prelinking. For
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# test simplicity, we merged this test and the test above by not
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# restoring $INTERP after $EXEC prelink. $INTERP gets restored
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# later below.
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if [prelink$relink $relink_args [file tail $exec]] {
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# /proc/PID/exe cannot be loaded as it is "EXECNAME (deleted)".
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test_attach_gdb $exec $pid $displacement "attach-relink$relink"
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}
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}
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file_copy $interp_saved $interp
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}
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remote_exec host "kill -9 $pid"
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}
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proc test_ld {file ifmain trynosym displacement} {
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global srcdir subdir gdb_prompt expect_out
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# First test normal `file'-command loaded $FILE with symbols.
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gdb_exit
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gdb_start
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# Clear it to never find any separate debug infos in $debug_root.
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gdb_test_no_output "set debug-file-directory"
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load $file
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# Print the "PIE (Position Independent Executable) displacement" message.
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gdb_test_no_output "set verbose on"
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reach "dl_main" "run segv" $displacement
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gdb_test "bt" "#0 +\[^\r\n\]*\\mdl_main\\M.*" "dl bt"
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if $ifmain {
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reach "main" continue "NONE"
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reach "libfunc" continue "NONE"
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gdb_test "bt" "#0 +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#1 +\[^\r\n\]*\\mmain\\M.*" "main bt"
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test_core $file $displacement
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test_attach $file $displacement
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}
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if !$trynosym {
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return
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}
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global pf_prefix
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set old_ldprefix $pf_prefix
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lappend pf_prefix "symbol-less:"
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# Test also `exec-file'-command loaded $FILE - therefore without symbols.
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# SYMBOL_OBJFILE is not available and only EXEC_BFD must be used.
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gdb_exit
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gdb_start
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# Clear it to never find any separate debug infos in $debug_root.
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gdb_test_no_output "set debug-file-directory"
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gdb_reinitialize_dir $srcdir/$subdir
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# Print the "PIE (Position Independent Executable) displacement" message.
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gdb_test_no_output "set verbose on"
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# Test no (error) message has been printed by `exec-file'.
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set escapedfile [string_to_regexp $file]
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gdb_test "exec-file $file" "exec-file $escapedfile" "load"
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if $ifmain {
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reach "dl_main" run $displacement
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set test "info files"
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set entrynohex ""
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gdb_test_multiple $test $test {
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-re "\r\n\[\t \]*Entry point:\[\t \]*0x(\[0-9a-f\]+)\r\n.*$gdb_prompt $" {
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set entrynohex $expect_out(1,string)
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pass $test
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}
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}
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if {$entrynohex != ""} {
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gdb_test "break *0x$entrynohex" "" "break at entry point"
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gdb_test "continue" "\r\nBreakpoint \[0-9\]+, 0x0*$entrynohex in .*" "entry point reached"
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}
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} else {
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# There is no symbol to break at ld.so. Moreover it can exit with an
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# error code.
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set test "ld.so exit"
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set test_displacement "seen displacement message as $displacement"
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gdb_test_multiple "run" $test {
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-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
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# Missing "$gdb_prompt $" is intentional.
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if {$expect_out(1,string) == "0x0"} {
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set case "ZERO"
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} else {
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set case "NONZERO"
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}
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if {$displacement == $case} {
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pass $test_displacement
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set displacement "FOUND-$displacement"
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} else {
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fail $test_displacement
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}
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exp_continue
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}
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-re "Program exited (normally|with code \[0-9\]+)\\.\r\n$gdb_prompt $" {
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# Do not check the binary filename as it may be truncated.
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pass $test
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}
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}
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if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
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fail $test_displacement
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}
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}
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set pf_prefix $old_ldprefix
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}
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# Create separate binaries for each testcase - to make the possible reported
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# problem reproducible after the whole test run finishes.
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set old_ldprefix $pf_prefix
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foreach ldprelink {NO YES} {
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foreach ldsepdebug {NO IN SEP} {
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# Skip running the ldsepdebug test if we do not have system separate
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# debug info available.
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if {$interp_system_debug == "" && $ldsepdebug == "SEP"} {
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continue
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}
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set ldname "LDprelink${ldprelink}debug${ldsepdebug}"
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set interp $binprefix-$ldname
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# prelink needs to always prelink all the dependencies to do any file
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# modifications of its files. ld.so also needs all the dependencies to
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# be prelinked to omit the relocation process. In-memory file offsets
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# are not dependent whether ld.so went the prelink way or through the
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# relocation process.
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#
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# For GDB we are not interested whether prelink succeeds as it is
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# transparent to GDB. GDB is being tested for differences of file
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# offsets vs. in-memory offsets. So we have to prelink even ld.so for
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# the BIN modification to happen but we need to restore the original
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# possibly unprelinked ld.so to test all the combinations for GDB.
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set interp_saved ${interp}-saved
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set pf_prefix $old_ldprefix
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lappend pf_prefix "$ldname:"
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if {$ldsepdebug == "NO"} {
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file_copy $interp_system $interp
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# Never call strip-debug before unprelink:
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# prelink: ...: Section .note.gnu.build-id created after prelinking
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if ![prelinkNO $interp] {
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continue
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}
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strip_debug $interp
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} elseif {$ldsepdebug == "IN" && $interp_system_debug == ""} {
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file_copy $interp_system $interp
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} elseif {$ldsepdebug == "IN" && $interp_system_debug != ""} {
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file_copy $interp_system $interp
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file_copy $interp_system_debug "${interp}.debug"
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# eu-unstrip: DWARF data in '...' not adjusted for prelinking bias; consider prelink -u
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if {![prelinkNO $interp] || ![prelinkNO "${interp}.debug"]} {
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continue
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}
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set test "eu-unstrip unprelinked:[file tail $interp_system] + [file tail $interp_system_debug] to [file tail $interp]"
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set command "exec eu-unstrip -o $interp $interp ${interp}.debug"
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verbose -log "command is $command"
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if [catch $command] {
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setup_xfail *-*-*
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fail $test
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continue
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} else {
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pass $test
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}
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} elseif {$ldsepdebug == "SEP" && $interp_system_debug == ""} {
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file_copy $interp_system $interp
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# eu-unstrip: DWARF data in '...' not adjusted for prelinking bias; consider prelink -u
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if ![prelinkNO $interp] {
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continue
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}
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gdb_gnu_strip_debug $interp
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} elseif {$ldsepdebug == "SEP" && $interp_system_debug != ""} {
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file_copy $interp_system $interp
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file_copy $interp_system_debug "${interp}.debug"
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}
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if {$ldsepdebug == "SEP"} {
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if ![prelinkNO "${interp}.debug"] {
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continue
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}
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} else {
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file delete "${interp}.debug"
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}
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if ![prelink$ldprelink $interp] {
|
|
continue
|
|
}
|
|
if {$ldprelink == "NO"} {
|
|
set displacement "NONZERO"
|
|
} else {
|
|
set displacement "ZERO"
|
|
}
|
|
test_ld $interp 0 [expr {$ldsepdebug == "NO"}] $displacement
|
|
|
|
if ![file_copy $interp $interp_saved] {
|
|
continue
|
|
}
|
|
set old_binprefix $pf_prefix
|
|
foreach binprelink {NO YES} {
|
|
foreach binsepdebug {NO IN SEP} {
|
|
# "ATTACH" is like "YES" but it is modified during run.
|
|
# It cannot be used for problem reproducibility after the
|
|
# testcase ends.
|
|
foreach binpie {NO YES ATTACH} {
|
|
# This combination is not possible, non-PIE (fixed address)
|
|
# binary cannot be prelinked to any (other) address.
|
|
if {$binprelink == "YES" && $binpie == "NO"} {
|
|
continue
|
|
}
|
|
|
|
set binname "BINprelink${binprelink}debug${binsepdebug}pie${binpie}"
|
|
set exec $binprefix-$binname
|
|
|
|
set pf_prefix $old_binprefix
|
|
lappend pf_prefix "$binname:"
|
|
|
|
set opts "additional_flags=-Wl,$binfile_lib,-rpath,[file dirname $binfile_lib]"
|
|
if {$binsepdebug != "NO"} {
|
|
lappend opts {debug}
|
|
}
|
|
if {$binpie != "NO"} {
|
|
lappend opts {additional_flags=-fPIE -pie}
|
|
}
|
|
|
|
set dir ${exec}.d
|
|
set relink_args [build_executable_own_libs ${test}.exp [file tail $exec] $srcfile $opts $interp $dir]
|
|
if {$relink_args == ""} {
|
|
continue;
|
|
}
|
|
|
|
if {$binsepdebug == "SEP"} {
|
|
gdb_gnu_strip_debug $exec
|
|
}
|
|
|
|
if {$binpie == "NO"} {
|
|
set displacement "NONE"
|
|
} elseif {$binprelink == "NO"} {
|
|
set displacement "NONZERO"
|
|
} else {
|
|
set displacement "ZERO"
|
|
}
|
|
|
|
if {[prelink$binprelink $relink_args [file tail $exec]]
|
|
&& [file_copy $interp_saved $interp]} {
|
|
if {$binpie != "ATTACH"} {
|
|
test_ld $exec 1 [expr {$binsepdebug == "NO"}] $displacement
|
|
} else {
|
|
# If the file has been randomly prelinked it must
|
|
# be "NONZERO". We could see "ZERO" only if it was
|
|
# unprelinked and it is now running at the same
|
|
# address - which is 0 but executable can never run
|
|
# at address 0.
|
|
|
|
set displacement "NONZERO"
|
|
test_attach $exec $displacement $relink_args
|
|
|
|
# ATTACH means that executables and libraries have
|
|
# been modified after they have been run. They
|
|
# cannot be reused for problem reproducibility after
|
|
# the testcase ends in the ATTACH case. Therefore
|
|
# they are rather deleted not to confuse after the
|
|
# run finishes.
|
|
set exec_debug [system_debug_get $exec]
|
|
if {$exec_debug != ""} {
|
|
# `file delete [glob "${exec_debug}*"]' does not work.
|
|
foreach f [glob "${exec_debug}*"] {
|
|
file delete $f
|
|
}
|
|
}
|
|
file delete -force $dir
|
|
# `file delete [glob "${exec}*"]' does not work.
|
|
foreach f [glob "${exec}*"] {
|
|
file delete $f
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
file delete $interp_saved
|
|
}
|
|
}
|
|
set pf_prefix $old_ldprefix
|