gdb/testsuite/gdb.base/break-interp.exp - binutils-gdb - Git at Google

 # 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: [^ ]* 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
     } 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.
 proc reach {func command} {
     global gdb_prompt

     if [gdb_breakpoint $func allow-pending] {
 	set test "reach $func"
 	gdb_test_multiple $command $test {
 	    -re "Breakpoint \[0-9\]+, $func \\(.*\\) at .*:\[0-9\]+\r\n.*$gdb_prompt $" {
 		pass $test
 	    }
 	    -re "Breakpoint \[0-9\]+, \[0-9xa-f\]+ in $func \\(\\)( from .*)?\r\n$gdb_prompt $" {
 		pass $test
 	    }
 	}
     }
 }

 proc test_core {file} {
     global srcdir subdir gdb_prompt

     set corefile [core_find $file {} "segv"]
     if {$corefile == ""} {
 	return
     }

     gdb_exit
     gdb_start
     # Clear it to never find any separate debug infos in $debug_root.
     gdb_test "set debug-file-directory" "" "set debug-file-directory for core"
     gdb_reinitialize_dir $srcdir/$subdir
     gdb_load $file

     # Do not check the binary filename as it may be truncated.
     gdb_test "core-file $corefile" "Core was generated by .*\r\n#0 .*" "core loaded"

     gdb_test "bt" "#\[0-9\]+ +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#\[0-9\]+ +\[^\r\n\]*\\mmain\\M.*" "core main bt"
 }

 proc test_attach {file} {
     global board_info

     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
 	}
     }

     gdb_exit
     gdb_start
     gdb_test "attach $pid" "Attaching to process $pid\r\n.*" "attach"
     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"
 }

 proc test_ld {file ifmain trynosym} {
     global srcdir subdir gdb_prompt

     # 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 "set debug-file-directory"
     gdb_reinitialize_dir $srcdir/$subdir
     gdb_load $file

     reach "dl_main" "run segv"

     gdb_test "bt" "#0 +\[^\r\n\]*\\mdl_main\\M.*" "dl bt"

     if $ifmain {
 	reach "main" continue

 	reach "libfunc" continue

 	gdb_test "bt" "#0 +\[^\r\n\]*\\mlibfunc\\M\[^\r\n\]*\r\n#1 +\[^\r\n\]*\\mmain\\M.*" "main bt"

 	test_core $file

 	test_attach $file
     }

     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 "set debug-file-directory"
     gdb_reinitialize_dir $srcdir/$subdir

     # 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

 	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.
 	gdb_test "run" "Program exited (normally|with code \[0-9\]+)\\." "ld.so exit"
     }

     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
 	}
 	test_ld $interp 0 [expr {$ldsepdebug == "NO"}]

 	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
 			# Just a sanity check.  As gdb_gnu_strip_debug uses the
 			# "[file dirname $exec]/.debug/[file tail $exec].debug"
 			# variant delete the higher-priority exec.debug file.
 			file delete "$exec.debug"
 		    }

 		    # 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]} {
 			test_ld $exec 1 [expr {$binsepdebug == "NO"}]
 		    }
 		}
 	    }
 	}

 	file delete $interp_saved
     }
 }
 set pf_prefix $old_ldprefix
	# 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: [^ ]* 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
	} 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.
	proc reach {func command} {
	global gdb_prompt

	if [gdb_breakpoint $func allow-pending] {
	set test "reach $func"
	gdb_test_multiple $command $test {
	-re "Breakpoint \[0-9\]+, $func \\(.\\) at .:\[0-9\]+\r\n.*$gdb_prompt $" {
	pass $test
	}
	-re "Breakpoint \[0-9\]+, \[0-9xa-f\]+ in $func \\(\\)( from .*)?\r\n$gdb_prompt $" {
	pass $test
	}
	}
	}
	}

	proc test_core {file} {
	global srcdir subdir gdb_prompt

	set corefile [core_find $file {} "segv"]
	if {$corefile == ""} {
	return
	}

	gdb_exit
	gdb_start
	# Clear it to never find any separate debug infos in $debug_root.
	gdb_test "set debug-file-directory" "" "set debug-file-directory for core"
	gdb_reinitialize_dir $srcdir/$subdir
	gdb_load $file

	# Do not check the binary filename as it may be truncated.
	gdb_test "core-file $corefile" "Core was generated by .\r\n#0 ." "core loaded"

	gdb_test "bt" "#\[0-9\]+ +\[^\r\n\]\\mlibfunc\\M\[^\r\n\]\r\n#\[0-9\]+ +\[^\r\n\]\\mmain\\M." "core main bt"
	}

	proc test_attach {file} {
	global board_info

	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
	}
	}

	gdb_exit
	gdb_start
	gdb_test "attach $pid" "Attaching to process $pid\r\n.*" "attach"
	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"
	}

	proc test_ld {file ifmain trynosym} {
	global srcdir subdir gdb_prompt

	# 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 "set debug-file-directory"
	gdb_reinitialize_dir $srcdir/$subdir
	gdb_load $file

	reach "dl_main" "run segv"

	gdb_test "bt" "#0 +\[^\r\n\]\\mdl_main\\M." "dl bt"

	if $ifmain {
	reach "main" continue

	reach "libfunc" continue

	gdb_test "bt" "#0 +\[^\r\n\]\\mlibfunc\\M\[^\r\n\]\r\n#1 +\[^\r\n\]\\mmain\\M." "main bt"

	test_core $file

	test_attach $file
	}

	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 "set debug-file-directory"
	gdb_reinitialize_dir $srcdir/$subdir

	# 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

	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.
	gdb_test "run" "Program exited (normally\|with code \[0-9\]+)\\." "ld.so exit"
	}

	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
	}
	test_ld $interp 0 [expr {$ldsepdebug == "NO"}]

	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
	# Just a sanity check. As gdb_gnu_strip_debug uses the
	# "[file dirname $exec]/.debug/[file tail $exec].debug"
	# variant delete the higher-priority exec.debug file.
	file delete "$exec.debug"
	}

	# 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]} {
	test_ld $exec 1 [expr {$binsepdebug == "NO"}]
	}
	}
	}
	}

	file delete $interp_saved
	}
	}
	set pf_prefix $old_ldprefix