old-cross-binutils/gdb/testsuite/gdb.base/break-interp.exp
Jan Kratochvil 37cc8bfee6 gdb/testsuite/
* gdb.base/break-interp.exp (prelinkYES): XFAIL on `Not enough room to
	add .dynamic entry'.
2010-06-29 21:48:10 +00:00

703 lines
20 KiB
Text

# Copyright 2010 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/>.
# This test only works on GNU/Linux.
if { ![isnative] || [is_remote host] || ![istarget *-linux*] || [skip_shlib_tests]} {
continue
}
set test "break-interp"
set binprefix ${objdir}/${subdir}/${test}
# Only to get the $interp_system name.
set srcfile_test "start.c"
set binfile_test ${test}-test
set binfile_lib ${objdir}/${subdir}/${test}.so
set srcfile "${test}-main.c"
set srcfile_lib "${test}-lib.c"
if [get_compiler_info ${binfile_lib}] {
return -1
}
# Use -soname so that it is listed with " => " by ldd and this testcase makes
# a copy of ${binfile_lib} for each prelink variant.
if {[gdb_compile_shlib ${srcdir}/${subdir}/${srcfile_lib} ${binfile_lib} [list debug additional_flags=-Wl,-soname,${test}.so]] != ""} {
return -1
}
if {[build_executable ${test}.exp $binfile_test ${srcfile_test} {}] == -1} {
return -1
}
# Return the interpreter filename string.
# Return "" if no interpreter was found.
proc section_get {exec section} {
global objdir
global subdir
set tmp "${objdir}/${subdir}/break-interp.interp"
set objcopy_program [transform objcopy]
set command "exec $objcopy_program -O binary --set-section-flags $section=A --change-section-address $section=0 -j $section $exec $tmp"
verbose -log "command is $command"
set result [catch $command output]
verbose -log "result is $result"
verbose -log "output is $output"
if {$result == 1} {
return ""
}
set fi [open $tmp]
fconfigure $fi -translation binary
set data [read $fi]
close $fi
#file delete $tmp
# .interp has size $len + 1 but .gnu_debuglink contains garbage after \000.
set len [string first \000 $data]
if {$len < 0} {
verbose -log "section $section not found"
return ""
}
set retval [string range $data 0 [expr $len - 1]]
verbose -log "section $section is <$retval>"
return $retval
}
# Note: The separate debug info file content build-id/crc32 are not verified
# contrary to the GDB search algorithm skipping non-matching ones.
proc system_debug_get {exec} {
global debug_root
set exec_build_id_debug [build_id_debug_filename_get $exec]
set debug_base "[file tail $exec].debug"
set exec_dir [file dirname $exec]
# isfile returns 1 even for symlinks to files.
set retval $debug_root/$exec_build_id_debug
if [file isfile $retval] {
return $retval
}
set retval $exec_dir/$debug_base
if [file isfile $retval] {
return $retval
}
set retval $exec_dir/.debug/$debug_base
if [file isfile $retval] {
return $retval
}
set retval $debug_root/$exec_dir/$debug_base
if [file isfile $retval] {
return $retval
}
return ""
}
gdb_exit
gdb_start
set debug_root ""
set test "show debug-file-directory"
gdb_test_multiple $test $test {
-re "The directory where separate debug symbols are searched for is \"(.*)\".\r\n$gdb_prompt $" {
set debug_root $expect_out(1,string)
}
}
set interp_system [section_get ${objdir}/${subdir}/$binfile_test .interp]
set interp_system_debug [system_debug_get $interp_system]
verbose -log "$interp_system has debug $interp_system_debug"
proc prelinkNO_run {arg} {
set command "exec /usr/sbin/prelink -uN $arg"
verbose -log "command is $command"
set result [catch $command output]
verbose -log "result is $result"
verbose -log "output is $output"
return [list $result $output]
}
proc prelinkNO {arg {name {}}} {
if {$name == ""} {
set name [file tail $arg]
}
set test "unprelink $name"
set run [prelinkNO_run $arg]
set result [lindex $run 0]
set output [lindex $run 1]
if {$result == 0 && $output == ""} {
verbose -log "$name has been now unprelinked"
set run [prelinkNO_run $arg]
set result [lindex $run 0]
set output [lindex $run 1]
}
# Last line does miss the trailing \n.
if {$result == 1 && [regexp {^(/usr/sbin/prelink[^\r\n]*: [^ ]* does not have .gnu.prelink_undo section\n?)*$} $output]} {
pass $test
return 1
} else {
fail $test
return 0
}
}
proc prelinkYES {arg {name ""}} {
if {$name == ""} {
set name [file tail $arg]
}
set test "prelink $name"
set command "exec /usr/sbin/prelink -qNR --no-exec-shield $arg"
verbose -log "command is $command"
set result [catch $command output]
verbose -log "result is $result"
verbose -log "output is $output"
if {$result == 0 && $output == ""} {
pass $test
return 1
} elseif {$result == 1 \
&& [string match -nocase "*: Not enough room to add .dynamic entry" $output]} {
# Linker should have reserved some entries for prelink.
xfail $test
return 0
} else {
fail $test
return 0
}
}
# Resolve symlinks.
proc symlink_resolve {file} {
set loop 0
while {[file type $file] == "link"} {
set target [file readlink $file]
if {[file pathtype $target] == "relative"} {
set src2 [file dirname $file]/$target
} else {
set src2 $target
}
verbose -log "Resolved symlink $file targetting $target as $src2"
set file $src2
set loop [expr $loop + 1]
if {$loop > 30} {
fail "Looping symlink resolution for $file"
return ""
}
}
return $file
}
proc copy {src dest} {
set src [symlink_resolve $src]
# Test name would contain build-id hash for symlink-unresolved $src.
set test "copy [file tail $src] to [file tail $dest]"
set command "file copy -force $src $dest"
verbose -log "command is $command"
if [catch $command] {
fail $test
return 0
} else {
pass $test
return 1
}
}
proc strip_debug {dest} {
set test "strip [file tail $dest]"
set strip_program [transform strip]
set command "exec $strip_program --strip-debug $dest"
verbose -log "command is $command"
if [catch $command] {
fail $test
return 0
} else {
pass $test
return 1
}
}
# `runto' does not check we stopped really at the function we specified.
# DISPLACEMENT can be "NONE", "ZERO" or "NONZERO"
proc reach {func command displacement} {
global gdb_prompt expect_out
global pf_prefix
set old_ldprefix $pf_prefix
lappend pf_prefix "reach-$func:"
if [gdb_breakpoint $func allow-pending] {
set test "reach"
set test_displacement "seen displacement message as $displacement"
gdb_test_multiple $command $test {
-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
# Missing "$gdb_prompt $" is intentional.
if {$expect_out(1,string) == "0x0"} {
set case "ZERO"
} else {
set case "NONZERO"
}
if {$displacement == $case} {
pass $test_displacement
# Permit multiple such messages.
set displacement "FOUND-$displacement"
} elseif {$displacement != "FOUND-$case"} {
fail $test_displacement
}
exp_continue
}
-re "Breakpoint \[0-9\]+, $func \\(.*\\) at .*:\[0-9\]+\r\n.*$gdb_prompt $" {
pass $test
}
-re "Breakpoint \[0-9\]+, \[0-9xa-f\]+ in $func \\(\\).*\r\n$gdb_prompt $" {
pass $test
}
}
if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
fail $test_displacement
}
}
set pf_prefix $old_ldprefix
}
proc test_core {file displacement} {
global srcdir subdir gdb_prompt expect_out
set corefile [core_find $file {} "segv"]
if {$corefile == ""} {
return
}
global pf_prefix
set old_ldprefix $pf_prefix
lappend pf_prefix "core:"
gdb_exit
gdb_start
# Clear it to never find any separate debug infos in $debug_root.
gdb_test_no_output "set debug-file-directory" \
"set debug-file-directory for core"
gdb_reinitialize_dir $srcdir/$subdir
gdb_load $file
# Print the "PIE (Position Independent Executable) displacement" message.
gdb_test_no_output "set verbose on"
set test "core loaded"
set test_displacement "seen displacement message as $displacement"
gdb_test_multiple "core-file $corefile" $test {
-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
# Missing "$gdb_prompt $" is intentional.
if {$expect_out(1,string) == "0x0"} {
set case "ZERO"
} else {
set case "NONZERO"
}
if {$displacement == $case} {
pass $test_displacement
# Permit multiple such messages.
set displacement "FOUND-$displacement"
} elseif {$displacement != "FOUND-$case"} {
fail $test_displacement
}
exp_continue
}
-re "Core was generated by .*\r\n#0 .*$gdb_prompt $" {
# Do not check the binary filename as it may be truncated.
pass $test
}
}
if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
fail $test_displacement
}
gdb_test "bt" "#\[0-9\]+ +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#\[0-9\]+ +\[^\r\n\]*\\mmain\\M.*" "core main bt"
set pf_prefix $old_ldprefix
}
proc test_attach {file displacement} {
global board_info gdb_prompt expect_out
gdb_exit
set test "sleep function started"
set command "${file} sleep"
set res [remote_spawn host $command];
if { $res < 0 || $res == "" } {
perror "Spawning $command failed."
fail $test
return
}
set pid [exp_pid -i $res]
gdb_expect {
-re "sleeping\r\n" {
pass $test
}
eof {
fail "$test (eof)"
return
}
timeout {
fail "$test (timeout)"
return
}
}
global pf_prefix
set old_ldprefix $pf_prefix
lappend pf_prefix "attach:"
gdb_exit
gdb_start
# Print the "PIE (Position Independent Executable) displacement" message.
gdb_test_no_output "set verbose on"
set test "attach"
gdb_test_multiple "attach $pid" $test {
-re "Attaching to process $pid\r\n" {
# Missing "$gdb_prompt $" is intentional.
pass $test
}
}
set test "attach final prompt"
set test_displacement "seen displacement message as $displacement"
gdb_test_multiple "" $test {
-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
# Missing "$gdb_prompt $" is intentional.
if {$expect_out(1,string) == "0x0"} {
set case "ZERO"
} else {
set case "NONZERO"
}
if {$displacement == $case} {
pass $test_displacement
# Permit multiple such messages.
set displacement "FOUND-$displacement"
} elseif {$displacement != "FOUND-$case"} {
fail $test_displacement
}
exp_continue
}
-re "$gdb_prompt $" {
pass $test
}
}
if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
fail $test_displacement
}
gdb_test "bt" "#\[0-9\]+ +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#\[0-9\]+ +\[^\r\n\]*\\mmain\\M.*" "attach main bt"
gdb_exit
remote_exec host "kill -9 $pid"
set pf_prefix $old_ldprefix
}
proc test_ld {file ifmain trynosym displacement} {
global srcdir subdir gdb_prompt expect_out
# First test normal `file'-command loaded $FILE with symbols.
gdb_exit
gdb_start
# Clear it to never find any separate debug infos in $debug_root.
gdb_test_no_output "set debug-file-directory"
gdb_reinitialize_dir $srcdir/$subdir
gdb_load $file
# Print the "PIE (Position Independent Executable) displacement" message.
gdb_test_no_output "set verbose on"
reach "dl_main" "run segv" $displacement
gdb_test "bt" "#0 +\[^\r\n\]*\\mdl_main\\M.*" "dl bt"
if $ifmain {
# Displacement message will be printed the second time on initializing
# the linker from svr4_special_symbol_handling. If any ANOFFSET has
# been already set as non-zero the detection will no longer be run.
if {$displacement == "NONZERO"} {
set displacement_main "NONE"
} else {
set displacement_main $displacement
}
reach "main" continue $displacement_main
reach "libfunc" continue "NONE"
gdb_test "bt" "#0 +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#1 +\[^\r\n\]*\\mmain\\M.*" "main bt"
test_core $file $displacement
test_attach $file $displacement
}
if !$trynosym {
return
}
global pf_prefix
set old_ldprefix $pf_prefix
lappend pf_prefix "symbol-less:"
# Test also `exec-file'-command loaded $FILE - therefore without symbols.
# SYMBOL_OBJFILE is not available and only EXEC_BFD must be used.
gdb_exit
gdb_start
# Clear it to never find any separate debug infos in $debug_root.
gdb_test_no_output "set debug-file-directory"
gdb_reinitialize_dir $srcdir/$subdir
# Print the "PIE (Position Independent Executable) displacement" message.
gdb_test_no_output "set verbose on"
# Test no (error) message has been printed by `exec-file'.
set escapedfile [string_to_regexp $file]
gdb_test "exec-file $file" "exec-file $escapedfile" "load"
if $ifmain {
reach "dl_main" run $displacement
set test "info files"
set entrynohex ""
gdb_test_multiple $test $test {
-re "\r\n\[\t \]*Entry point:\[\t \]*0x(\[0-9a-f\]+)\r\n.*$gdb_prompt $" {
set entrynohex $expect_out(1,string)
pass $test
}
}
if {$entrynohex != ""} {
gdb_test "break *0x$entrynohex" "" "break at entry point"
gdb_test "continue" "\r\nBreakpoint \[0-9\]+, 0x0*$entrynohex in .*" "entry point reached"
}
} else {
# There is no symbol to break at ld.so. Moreover it can exit with an
# error code.
set test "ld.so exit"
set test_displacement "seen displacement message as $displacement"
gdb_test_multiple "run" $test {
-re "Using PIE \\(Position Independent Executable\\) displacement (0x\[0-9a-f\]+) " {
# Missing "$gdb_prompt $" is intentional.
if {$expect_out(1,string) == "0x0"} {
set case "ZERO"
} else {
set case "NONZERO"
}
if {$displacement == $case} {
pass $test_displacement
# Permit multiple such messages.
set displacement "FOUND-$displacement"
} elseif {$displacement != "FOUND-$case"} {
fail $test_displacement
}
exp_continue
}
-re "Program exited (normally|with code \[0-9\]+)\\.\r\n$gdb_prompt $" {
# Do not check the binary filename as it may be truncated.
pass $test
}
}
if ![regexp {^(NONE|FOUND-.*)$} $displacement] {
fail $test_displacement
}
}
set pf_prefix $old_ldprefix
}
# Create separate binaries for each testcase - to make the possible reported
# problem reproducible after the whole test run finishes.
set old_ldprefix $pf_prefix
foreach ldprelink {NO YES} {
foreach ldsepdebug {NO IN SEP} {
# Skip running the ldsepdebug test if we do not have system separate
# debug info available.
if {$interp_system_debug == "" && $ldsepdebug == "SEP"} {
continue
}
set ldname "LDprelink${ldprelink}debug${ldsepdebug}"
set interp $binprefix-$ldname
# prelink needs to always prelink all the dependencies to do any file
# modifications of its files. ld.so also needs all the dependencies to
# be prelinked to omit the relocation process. In-memory file offsets
# are not dependent whether ld.so went the prelink way or through the
# relocation process.
#
# For GDB we are not interested whether prelink succeeds as it is
# transparent to GDB. GDB is being tested for differences of file
# offsets vs. in-memory offsets. So we have to prelink even ld.so for
# the BIN modification to happen but we need to restore the original
# possibly unprelinked ld.so to test all the combinations for GDB.
set interp_saved ${interp}-saved
set pf_prefix $old_ldprefix
lappend pf_prefix "$ldname:"
if {$ldsepdebug == "NO"} {
copy $interp_system $interp
# Never call strip-debug before unprelink:
# prelink: ...: Section .note.gnu.build-id created after prelinking
if ![prelinkNO $interp] {
continue
}
strip_debug $interp
} elseif {$ldsepdebug == "IN" && $interp_system_debug == ""} {
copy $interp_system $interp
} elseif {$ldsepdebug == "IN" && $interp_system_debug != ""} {
copy $interp_system $interp
copy $interp_system_debug "${interp}.debug"
# eu-unstrip: DWARF data in '...' not adjusted for prelinking bias; consider prelink -u
if {![prelinkNO $interp] || ![prelinkNO "${interp}.debug"]} {
continue
}
set test "eu-unstrip unprelinked:[file tail $interp_system] + [file tail $interp_system_debug] to [file tail $interp]"
set command "exec eu-unstrip -o $interp $interp ${interp}.debug"
verbose -log "command is $command"
if [catch $command] {
setup_xfail *-*-*
fail $test
continue
} else {
pass $test
}
} elseif {$ldsepdebug == "SEP" && $interp_system_debug == ""} {
copy $interp_system $interp
# eu-unstrip: DWARF data in '...' not adjusted for prelinking bias; consider prelink -u
if ![prelinkNO $interp] {
continue
}
gdb_gnu_strip_debug $interp
} elseif {$ldsepdebug == "SEP" && $interp_system_debug != ""} {
copy $interp_system $interp
copy $interp_system_debug "${interp}.debug"
}
if {$ldsepdebug == "SEP"} {
if ![prelinkNO "${interp}.debug"] {
continue
}
} else {
file delete "${interp}.debug"
}
if ![prelink$ldprelink $interp] {
continue
}
if {$ldprelink == "NO"} {
set displacement "NONZERO"
} else {
set displacement "ZERO"
}
test_ld $interp 0 [expr {$ldsepdebug == "NO"}] $displacement
if ![copy $interp $interp_saved] {
continue
}
set old_binprefix $pf_prefix
foreach binprelink {NO YES} {
foreach binsepdebug {NO IN SEP} {
foreach binpie {NO YES} {
# This combination is not possible, non-PIE (fixed address)
# binary cannot be prelinked to any (other) address.
if {$binprelink == "YES" && $binpie == "NO"} {
continue
}
set binname "BINprelink${binprelink}debug${binsepdebug}pie${binpie}"
set exec $binprefix-$binname
set dir ${exec}.d
set pf_prefix $old_binprefix
lappend pf_prefix "$binname:"
set opts "additional_flags=-Wl,--dynamic-linker,$interp,-rpath,$dir"
lappend opts "additional_flags=-Wl,$binfile_lib,-rpath,[file dirname $binfile_lib]"
if {$binsepdebug != "NO"} {
lappend opts {debug}
}
if {$binpie == "YES"} {
lappend opts {additional_flags=-fPIE -pie}
}
if {[build_executable ${test}.exp [file tail $exec] $srcfile $opts] == -1} {
continue;
}
if {$binsepdebug == "SEP"} {
gdb_gnu_strip_debug $exec
}
# Supply a self-sufficent directory $dir with the required
# libraries. To make an executable properly prelinked all
# its dependencies on libraries must be also prelinked. If
# some of the system libraries is currently not prelinked
# we have no right to prelink (modify it) at its current
# system place.
file delete -force $dir
file mkdir $dir
set command "ldd $exec"
set test "ldd [file tail $exec]"
set result [catch "exec $command" output]
verbose -log "result of $command is $result"
verbose -log "output of $command is $output"
if {$result != 0 || $output == ""} {
fail $test
} else {
pass $test
}
# gdb testsuite will put there also needless -lm.
set test "$test output contains libc"
set libc [regexp -all -inline -line {^.* => (/[^ ]+).*$} $output]
if {[llength $libc] == 0} {
fail $test
} else {
pass $test
}
set dests {}
for {set i 1} {$i < [llength $libc]} {incr i 2} {
set abspath [lindex $libc $i]
set dest "$dir/[file tail $abspath]"
copy $abspath $dest
lappend dests $dest
}
if {[prelink$binprelink "--dynamic-linker=$interp --ld-library-path=$dir $exec $interp [concat $dests]" [file tail $exec]]
&& [copy $interp_saved $interp]} {
if {$binpie == "NO"} {
set displacement "NONE"
} elseif {$binprelink == "NO"} {
set displacement "NONZERO"
} else {
set displacement "ZERO"
}
test_ld $exec 1 [expr {$binsepdebug == "NO"}] $displacement
}
}
}
}
file delete $interp_saved
}
}
set pf_prefix $old_ldprefix