binutils/testsuite/lib/utils-lib.exp - binutils-gdb - Git at Google

 # Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2003, 2004, 2006, 2007,
 # 2009 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, write to the Free Software
 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.

 # Please email any bugs, comments, and/or additions to this file to:
 # bug-dejagnu@prep.ai.mit.edu

 # This file was written by Rob Savoye <rob@cygnus.com>
 # and extended by Ian Lance Taylor <ian@cygnus.com>

 proc binutil_version { prog } {
     if ![is_remote host] {
 	set path [which $prog]
 	if {$path == 0} then {
 	    perror "$prog can't be run, file not found."
 	    return ""
 	}
     } else {
 	set path $prog
     }
     set state [remote_exec host $prog --version]
     set tmp "[lindex $state 1]\n"
     # Should find a way to discard constant parts, keep whatever's
     # left, so the version string could be almost anything at all...
     regexp "\[^\n\]* (cygnus-|)(\[-0-9.a-zA-Z-\]+)\[\r\n\].*" "$tmp" version cyg number
     if ![info exists number] then {
         return "$path (no version number)\n"
     }
     return "$path $number\n"
 }

 #
 # default_binutils_run
 #	run a program, returning the output
 #	sets binutils_run_failed if the program does not exist
 #
 proc default_binutils_run { prog progargs } {
     global binutils_run_failed
     global host_triplet

     set binutils_run_failed 0

     if ![is_remote host] {
 	if {[which $prog] == 0} then {
 	    perror "$prog does not exist"
 	    set binutils_run_failed 1
 	    return ""
 	}
     }

     send_log "$prog $progargs\n"
     verbose "$prog $progargs"

     # Gotta quote dollar-signs because they get mangled by the
     # shell otherwise.
     regsub -all "\\$" "$progargs" "\\$" progargs

     set state [remote_exec host $prog $progargs]
     set exec_output [prune_warnings [lindex $state 1]]
     if {![string match "" $exec_output]} then {
 	send_log "$exec_output\n"
 	verbose "$exec_output"
     } else {
 	if { [lindex $state 0] != 0 } {
 	    set exec_output "$prog exited with status [lindex $state 0]"
 	    send_log "$exec_output\n"
 	    verbose "$exec_output"
 	}
     }
     return $exec_output
 }

 #
 # default_binutils_assemble
 #	assemble a file
 #
 proc default_binutils_assemble { source object } {
     global srcdir
     global host_triplet

     # The HPPA assembler syntax is a little different than most, to make
     # the test source file assemble we need to run it through sed.
     #
     # This is a hack in that it won't scale well if other targets need
     # similar transformations to assemble.  We'll generalize the hack
     # if/when other targets need similar handling.
     if { [istarget "hppa*-*-*"] && ![istarget "*-*-linux*" ] } then {
         set sed_file $srcdir/config/hppa.sed
 	send_log "sed -f $sed_file < $source > asm.s\n"
 	verbose "sed -f $sed_file < $source > asm.s"
 	catch "exec sed -f $sed_file < $source > asm.s"
 	set source asm.s
     }

     set exec_output [target_assemble $source $object ""]
     set exec_output [prune_warnings $exec_output]

     if [string match "" $exec_output] {
 	return 1
     } else {
 	send_log "$exec_output\n"
 	verbose "$exec_output"
 	perror "$source: assembly failed"
 	return 0
     }
 }

 #
 # is_elf_format
 #	true if the object format is known to be ELF
 #
 proc is_elf_format {} {
     if { ![istarget *-*-sysv4*] \
 	 && ![istarget *-*-unixware*] \
 	 && ![istarget *-*-elf*] \
 	 && ![istarget *-*-eabi*] \
 	 && ![istarget hppa*64*-*-hpux*] \
 	 && ![istarget ia64-*-hpux*] \
 	 && ![istarget *-*-linux*] \
 	 && ![istarget *-*-irix5*] \
 	 && ![istarget *-*-irix6*] \
 	 && ![istarget *-*-netbsd*] \
 	 && ![istarget *-*-solaris2*] } {
 	return 0
     }

     if { [istarget *-*-linux*aout*] \
 	 || [istarget *-*-linux*oldld*] } {
 	return 0
     }

     if { ![istarget *-*-netbsdelf*] \
 	 && ([istarget *-*-netbsd*aout*] \
 	     || [istarget *-*-netbsdpe*] \
 	     || [istarget arm*-*-netbsd*] \
 	     || [istarget sparc-*-netbsd*] \
 	     || [istarget i*86-*-netbsd*] \
 	     || [istarget m68*-*-netbsd*] \
 	     || [istarget vax-*-netbsd*] \
 	     || [istarget ns32k-*-netbsd*]) } {
     	return 0
     }
     return 1
 }

 #
 # exe_ext
 #	Returns target executable extension, if any.
 #
 proc exe_ext {} {
     if { [istarget *-*-mingw*] || [istarget *-*-cygwin*] } {
         return ".exe"
     } else {
         return ""
     }
 }

 # Copied and modified from gas.

 # run_dump_test FILE (optional:) EXTRA_OPTIONS
 #
 # Assemble a .s file, then run some utility on it and check the output.
 #
 # There should be an assembly language file named FILE.s in the test
 # suite directory, and a pattern file called FILE.d.  `run_dump_test'
 # will assemble FILE.s, run some tool like `objdump', `objcopy', or
 # `nm' on the .o file to produce textual output, and then analyze that
 # with regexps.  The FILE.d file specifies what program to run, and
 # what to expect in its output.
 #
 # The FILE.d file begins with zero or more option lines, which specify
 # flags to pass to the assembler, the program to run to dump the
 # assembler's output, and the options it wants.  The option lines have
 # the syntax:
 #
 #         # OPTION: VALUE
 #
 # OPTION is the name of some option, like "name" or "objdump", and
 # VALUE is OPTION's value.  The valid options are described below.
 # Whitespace is ignored everywhere, except within VALUE.  The option
 # list ends with the first line that doesn't match the above syntax.
 # However, a line within the options that begins with a #, but doesn't
 # have a recognizable option name followed by a colon, is considered a
 # comment and entirely ignored.
 #
 # The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
 # two-element lists.  The first element of each is an option name, and
 # the second additional arguments to be added on to the end of the
 # option list as given in FILE.d.  (If omitted, no additional options
 # are added.)
 #
 # The interesting options are:
 #
 #   name: TEST-NAME
 #	The name of this test, passed to DejaGNU's `pass' and `fail'
 #       commands.  If omitted, this defaults to FILE, the root of the
 #       .s and .d files' names.
 #
 #   as: FLAGS
 #	When assembling FILE.s, pass FLAGS to the assembler.
 #
 #   PROG: PROGRAM-NAME
 #       The name of the program to run to analyze the .o file produced
 #       by the assembler.  This can be omitted; run_dump_test will guess
 #       which program to run by seeing which of the flags options below
 #	is present.
 #
 #   objdump: FLAGS
 #   nm: FLAGS
 #   objcopy: FLAGS
 #	Use the specified program to analyze the .o file, and pass it
 #	FLAGS, in addition to the .o file name.  Note that they are run
 #	with LC_ALL=C in the environment to give consistent sorting
 #	of symbols.
 #
 #   source: SOURCE
 #	Assemble the file SOURCE.s.  If omitted, this defaults to FILE.s.
 #       This is useful if several .d files want to share a .s file.
 #
 #   target: GLOBS...
 #       Run this test only on a specified list of targets.  More precisely,
 #       each glob in the space-separated list is passed to "istarget"; if
 #       it evaluates true for any of them, the test will be run, otherwise
 #       it will be marked unsupported.
 #
 #   not-target: GLOBS...
 #       Do not run this test on a specified list of targets.  Again,
 #       the each glob in the space-separated list is passed to
 #       "istarget", and the test is run if it evaluates *false* for
 #       *all* of them.  Otherwise it will be marked unsupported.
 #
 #   skip: GLOBS...
 #   not-skip: GLOBS...
 #       These are exactly the same as "not-target" and "target",
 #       respectively, except that they do nothing at all if the check
 #       fails.  They should only be used in groups, to construct a single
 #       test which is run on all targets but with variant options or
 #       expected output on some targets.  (For example, see
 #       gas/arm/inst.d and gas/arm/wince_inst.d.)
 #
 #   error: REGEX
 #	An error with message matching REGEX must be emitted for the test
 #	to pass.  The PROG, objdump, nm and objcopy options have no
 #	meaning and need not supplied if this is present.
 #
 #   warning: REGEX
 #	Expect a gas warning matching REGEX.  It is an error to issue
 #	both "error" and "warning".
 #
 #   stderr: FILE
 #       FILE contains regexp lines to be matched against the diagnostic
 #       output of the assembler.  This does not preclude the use of
 #       PROG, nm, objdump, or objcopy.
 #
 #   error-output: FILE
 #       Means the same as 'stderr', but also indicates that the assembler
 #       is expected to exit unsuccessfully (therefore PROG, objdump, nm,
 #       and objcopy have no meaning and should not be supplied).
 #
 # Each option may occur at most once.
 #
 # After the option lines come regexp lines.  `run_dump_test' calls
 # `regexp_diff' to compare the output of the dumping tool against the
 # regexps in FILE.d.  `regexp_diff' is defined later in this file; see
 # further comments there.

 proc run_dump_test { name {extra_options {}} } {
     global subdir srcdir
     global OBJDUMP NM OBJCOPY READELF STRIP
     global OBJDUMPFLAGS NMFLAGS OBJCOPYFLAGS READELFFLAGS STRIPFLAGS
     global host_triplet
     global env
     global copyfile
     global tempfile

     if [string match "*/*" $name] {
 	set file $name
 	set name [file tail $name]
     } else {
 	set file "$srcdir/$subdir/$name"
     }
     set opt_array [slurp_options "${file}.d"]
     if { $opt_array == -1 } {
 	perror "error reading options from $file.d"
 	unresolved $subdir/$name
 	return
     }
     set opts(addr2line) {}
     set opts(ar) {}
     set opts(nm) {}
     set opts(objcopy) {}
     set opts(objdump) {}
     set opts(strip) {}
     set opts(ranlib) {}
     set opts(readelf) {}
     set opts(size) {}
     set opts(strings) {}
     set opts(name) {}
     set opts(PROG) {}
     set opts(DUMPPROG) {}
     set opts(source) {}
     set opts(target) {}
     set opts(not-target) {}
     set opts(skip) {}
     set opts(not-skip) {}

     foreach i $opt_array {
 	set opt_name [lindex $i 0]
 	set opt_val [lindex $i 1]
 	if ![info exists opts($opt_name)] {
 	    perror "unknown option $opt_name in file $file.d"
 	    unresolved $subdir/$name
 	    return
 	}
 	if [string length $opts($opt_name)] {
 	    perror "option $opt_name multiply set in $file.d"
 	    unresolved $subdir/$name
 	    return
 	}
 	set opts($opt_name) $opt_val
     }

     foreach i $extra_options {
 	set opt_name [lindex $i 0]
 	set opt_val [lindex $i 1]
 	if ![info exists opts($opt_name)] {
 	    perror "unknown option $opt_name given in extra_opts"
 	    unresolved $subdir/$name
 	    return
 	}
 	# add extra option to end of existing option, adding space
 	# if necessary.
 	if [string length $opts($opt_name)] {
 	    append opts($opt_name) " "
 	}
 	append opts($opt_name) $opt_val
     }

     if { $opts(name) == "" } {
 	set testname "$subdir/$name"
     } else {
 	set testname $opts(name)
     }
     verbose "Testing $testname"

     if {$opts(PROG) == ""} {
 	perror "program isn't set in $file.d"
 	unresolved $testname
 	return
     }

     set destopt ""
     switch -- $opts(PROG) {
 	ar	{ set program ar }
 	objcopy	{ set program objcopy }
 	ranlib	{ set program ranlib }
 	strip	{
 	    set program strip
 	    set destopt "-o"
 	}
 	strings	{ set program strings }
 	default	{
 	    perror "unrecognized program option $opts(PROG) in $file.d"
 	    unresolved $testname
 	    return }
     }

     set dumpprogram ""
     if { $opts(DUMPPROG) != "" } {
 	switch -- $opts(DUMPPROG) {
 	    addr2line	{ set dumpprogram addr2line }
 	    nm		{ set dumpprogram nm }
 	    objdump	{ set dumpprogram objdump }
 	    readelf	{ set dumpprogram readelf }
 	    size	{ set dumpprogram size }
 	    default	{
 		perror "unrecognized dump program option $opts(DUMPPROG) in $file.d"
 		unresolved $testname
 		return }
 	}
     } else {
 	# Guess which program to run, by seeing which option was specified.
 	foreach p {objdump nm readelf} {
 	    if {$opts($p) != ""} {
 		if {$dumpprogram != ""} {
 		    perror "ambiguous dump program in $file.d"
 		    unresolved $testname
 		    return
 		} else {
 		    set dumpprogram $p
 		}
 	    }
 	}
     }

     # Handle skipping the test on specified targets.
     # You can have both skip/not-skip and target/not-target, but you can't
     # have both skip and not-skip, or target and not-target, in the same file.
     if { $opts(skip) != "" } then {
 	if { $opts(not-skip) != "" } then {
 	    perror "$testname: mixing skip and not-skip directives is invalid"
 	    unresolved $testname
 	    return
 	}
 	foreach glob $opts(skip) {
 	    if {[istarget $glob]} { return }
 	}
     }
     if { $opts(not-skip) != "" } then {
 	set skip 1
 	foreach glob $opts(not-skip) {
 	    if {[istarget $glob]} {
 		set skip 0
 		break
 	    }
 	}
 	if {$skip} { return }
     }
     if { $opts(target) != "" } then {
 	if { $opts(not-target) != "" } then {
 	    perror "$testname: mixing target and not-target directives is invalid"
 	    unresolved $testname
 	    return
 	}
 	set skip 1
 	foreach glob $opts(target) {
 	    if {[istarget $glob]} {
 		set skip 0
 		break
 	    }
 	}
 	if {$skip} {
 	    unsupported $testname
 	    return
 	}
     }
     if { $opts(not-target) != "" } then {
 	foreach glob $opts(not-target) {
 	    if {[istarget $glob]} {
 		unsupported $testname
 		return
 	    }
 	}
     }

     if { $opts(source) == "" } {
 	set srcfile ${file}.s
     } else {
 	set srcfile $srcdir/$subdir/$opts(source)
     }

     set exec_output [binutils_assemble ${srcfile} $tempfile]
     if [string match "" $exec_output] then {
 	send_log "$exec_output\n"
 	verbose "$exec_output"
 	fail $testname
 	return
     }

     set progopts1 $opts($program)
     eval set progopts \$[string toupper $program]FLAGS
     eval set binary \$[string toupper $program]

     set exec_output [binutils_run $binary "$progopts $progopts1 $tempfile $destopt ${copyfile}.o"]
     if ![string match "" $exec_output] {
 	send_log "$exec_output\n"
 	verbose "$exec_output"
 	fail $testname
 	return
     }

     set progopts1 $opts($dumpprogram)
     eval set progopts \$[string toupper $dumpprogram]FLAGS
     eval set binary \$[string toupper $dumpprogram]

     if { ![is_remote host] && [which $binary] == 0 } {
 	untested $testname
 	return
     }

     verbose "running $binary $progopts $progopts1" 3

     set cmd "$binary $progopts $progopts1 ${copyfile}.o"

     # Ensure consistent sorting of symbols
     if {[info exists env(LC_ALL)]} {
 	set old_lc_all $env(LC_ALL)
     }
     set env(LC_ALL) "C"
     send_log "$cmd\n"
     set comp_output [remote_exec host $cmd "" "/dev/null" "tmpdir/dump.out"]
     if {[info exists old_lc_all]} {
 	set env(LC_ALL) $old_lc_all
     } else {
 	unset env(LC_ALL)
     }
     if { [lindex $comp_output 0] != 0 } then {
 	send_log "$comp_output\n"
 	fail $testname
 	return
     }
     set comp_output [prune_warnings [lindex $comp_output 1]]
     if ![string match "" $comp_output] then {
 	send_log "$comp_output\n"
 	fail $testname
 	return
     }

     verbose_eval {[file_contents "tmpdir/dump.out"]} 3
     if { [regexp_diff "tmpdir/dump.out" "${file}.d"] } then {
 	fail $testname
 	verbose "output is [file_contents "tmpdir/dump.out"]" 2
 	return
     }

     pass $testname
 }

 proc slurp_options { file } {
     if [catch { set f [open $file r] } x] {
 	#perror "couldn't open `$file': $x"
 	perror "$x"
 	return -1
     }
     set opt_array {}
     # whitespace expression
     set ws  {[ 	]*}
     set nws {[^ 	]*}
     # whitespace is ignored anywhere except within the options list;
     # option names are alphabetic plus dash
     set pat "^#${ws}(\[a-zA-Z-\]*)$ws:${ws}(.*)$ws\$"
     while { [gets $f line] != -1 } {
 	set line [string trim $line]
 	# Whitespace here is space-tab.
 	if [regexp $pat $line xxx opt_name opt_val] {
 	    # match!
 	    lappend opt_array [list $opt_name $opt_val]
 	} elseif {![regexp "^#" $line ]} {
 	    break
 	}
     }
     close $f
     return $opt_array
 }

 # regexp_diff, based on simple_diff taken from ld test suite
 #	compares two files line-by-line
 #	file1 contains strings, file2 contains regexps and #-comments
 #	blank lines are ignored in either file
 #	returns non-zero if differences exist
 #
 proc regexp_diff { file_1 file_2 } {

     set eof -1
     set end_1 0
     set end_2 0
     set differences 0
     set diff_pass 0

     if [file exists $file_1] then {
 	set file_a [open $file_1 r]
     } else {
 	perror "$file_1 doesn't exist"
 	return 1
     }

     if [file exists $file_2] then {
 	set file_b [open $file_2 r]
     } else {
 	perror "$file_2 doesn't exist"
 	close $file_a
 	return 1
     }

     verbose " Regexp-diff'ing: $file_1 $file_2" 2

     while { 1 } {
 	set line_a ""
 	set line_b ""
 	while { [string length $line_a] == 0 } {
 	    if { [gets $file_a line_a] == $eof } {
 		set end_1 1
 		break
 	    }
 	}
 	while { [string length $line_b] == 0 || [string match "#*" $line_b] } {
 	    if [ string match "#pass" $line_b ] {
 		set end_2 1
 		set diff_pass 1
 		break
 	    } elseif [ string match "#..." $line_b ] {
 		if { [gets $file_b line_b] == $eof } {
 		    set end_2 1
 		    set diff_pass 1
 		    break
 		}
 		verbose "looking for \"^$line_b$\"" 3
 		while { ![regexp "^$line_b$" "$line_a"] } {
 		    verbose "skipping    \"$line_a\"" 3
 		    if { [gets $file_a line_a] == $eof } {
 			set end_1 1
 			break
 		    }
 		}
 		break
 	    }
 	    if { [gets $file_b line_b] == $eof } {
 		set end_2 1
 		break
 	    }
 	}

         if { $diff_pass } {
             break
         } elseif { $end_1 && $end_2 } {
             break
         } elseif { $end_1 } {
             send_log "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1\n"
             verbose "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1" 3
             set differences 1
             break
         } elseif { $end_2 } {
             send_log "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n"
             verbose "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" 3
             set differences 1
             break
         } else {
             verbose "regexp \"^$line_b$\"\nline   \"$line_a\"" 3
             if ![regexp "^$line_b$" "$line_a"] {
 		send_log "regexp_diff match failure\n"
 		send_log "regexp \"^$line_b$\"\nline   \"$line_a\"\n"
 		verbose "regexp_diff match failure\n" 3
 		set differences 1
             }
         }
     }

     if { $differences == 0 && !$diff_pass && [eof $file_a] != [eof $file_b] } {
 	send_log "$file_1 and $file_2 are different lengths\n"
 	verbose "$file_1 and $file_2 are different lengths" 3
 	set differences 1
     }

     close $file_a
     close $file_b

     return $differences
 }

 proc file_contents { filename } {
     set file [open $filename r]
     set contents [read $file]
     close $file
     return $contents
 }

 proc verbose_eval { expr { level 1 } } {
     global verbose
     if $verbose>$level then { eval verbose "$expr" $level }
 }
	# Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2003, 2004, 2006, 2007,
	# 2009 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, write to the Free Software
	# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.

	# Please email any bugs, comments, and/or additions to this file to:
	# bug-dejagnu@prep.ai.mit.edu

	# This file was written by Rob Savoye <rob@cygnus.com>
	# and extended by Ian Lance Taylor <ian@cygnus.com>

	proc binutil_version { prog } {
	if ![is_remote host] {
	set path [which $prog]
	if {$path == 0} then {
	perror "$prog can't be run, file not found."
	return ""
	}
	} else {
	set path $prog
	}
	set state [remote_exec host $prog --version]
	set tmp "[lindex $state 1]\n"
	# Should find a way to discard constant parts, keep whatever's
	# left, so the version string could be almost anything at all...
	regexp "\[^\n\]* (cygnus-\|)(\[-0-9.a-zA-Z-\]+)\[\r\n\].*" "$tmp" version cyg number
	if ![info exists number] then {
	return "$path (no version number)\n"
	}
	return "$path $number\n"
	}

	#
	# default_binutils_run
	# run a program, returning the output
	# sets binutils_run_failed if the program does not exist
	#
	proc default_binutils_run { prog progargs } {
	global binutils_run_failed
	global host_triplet

	set binutils_run_failed 0

	if ![is_remote host] {
	if {[which $prog] == 0} then {
	perror "$prog does not exist"
	set binutils_run_failed 1
	return ""
	}
	}

	send_log "$prog $progargs\n"
	verbose "$prog $progargs"

	# Gotta quote dollar-signs because they get mangled by the
	# shell otherwise.
	regsub -all "\\$" "$progargs" "\\$" progargs

	set state [remote_exec host $prog $progargs]
	set exec_output [prune_warnings [lindex $state 1]]
	if {![string match "" $exec_output]} then {
	send_log "$exec_output\n"
	verbose "$exec_output"
	} else {
	if { [lindex $state 0] != 0 } {
	set exec_output "$prog exited with status [lindex $state 0]"
	send_log "$exec_output\n"
	verbose "$exec_output"
	}
	}
	return $exec_output
	}

	#
	# default_binutils_assemble
	# assemble a file
	#
	proc default_binutils_assemble { source object } {
	global srcdir
	global host_triplet

	# The HPPA assembler syntax is a little different than most, to make
	# the test source file assemble we need to run it through sed.
	#
	# This is a hack in that it won't scale well if other targets need
	# similar transformations to assemble. We'll generalize the hack
	# if/when other targets need similar handling.
	if { [istarget "hppa--"] && ![istarget "--linux" ] } then {
	set sed_file $srcdir/config/hppa.sed
	send_log "sed -f $sed_file < $source > asm.s\n"
	verbose "sed -f $sed_file < $source > asm.s"
	catch "exec sed -f $sed_file < $source > asm.s"
	set source asm.s
	}

	set exec_output [target_assemble $source $object ""]
	set exec_output [prune_warnings $exec_output]

	if [string match "" $exec_output] {
	return 1
	} else {
	send_log "$exec_output\n"
	verbose "$exec_output"
	perror "$source: assembly failed"
	return 0
	}
	}

	#
	# is_elf_format
	# true if the object format is known to be ELF
	#
	proc is_elf_format {} {
	if { ![istarget --sysv4*] \
	&& ![istarget --unixware*] \
	&& ![istarget --elf*] \
	&& ![istarget --eabi*] \
	&& ![istarget hppa64--hpux] \
	&& ![istarget ia64--hpux] \
	&& ![istarget --linux*] \
	&& ![istarget --irix5*] \
	&& ![istarget --irix6*] \
	&& ![istarget --netbsd*] \
	&& ![istarget --solaris2*] } {
	return 0
	}

	if { [istarget --linuxaout] \
	\|\| [istarget --linuxoldld] } {
	return 0
	}

	if { ![istarget --netbsdelf*] \
	&& ([istarget --netbsdaout] \
	\|\| [istarget --netbsdpe*] \
	\|\| [istarget arm--netbsd*] \
	\|\| [istarget sparc--netbsd] \
	\|\| [istarget i86--netbsd*] \
	\|\| [istarget m68--netbsd*] \
	\|\| [istarget vax--netbsd] \
	\|\| [istarget ns32k--netbsd]) } {
	return 0
	}
	return 1
	}

	#
	# exe_ext
	# Returns target executable extension, if any.
	#
	proc exe_ext {} {
	if { [istarget --mingw] \|\| [istarget --cygwin] } {
	return ".exe"
	} else {
	return ""
	}
	}

	# Copied and modified from gas.

	# run_dump_test FILE (optional:) EXTRA_OPTIONS
	#
	# Assemble a .s file, then run some utility on it and check the output.
	#
	# There should be an assembly language file named FILE.s in the test
	# suite directory, and a pattern file called FILE.d. `run_dump_test'
	# will assemble FILE.s, run some tool like `objdump', `objcopy', or
	# `nm' on the .o file to produce textual output, and then analyze that
	# with regexps. The FILE.d file specifies what program to run, and
	# what to expect in its output.
	#
	# The FILE.d file begins with zero or more option lines, which specify
	# flags to pass to the assembler, the program to run to dump the
	# assembler's output, and the options it wants. The option lines have
	# the syntax:
	#
	# # OPTION: VALUE
	#
	# OPTION is the name of some option, like "name" or "objdump", and
	# VALUE is OPTION's value. The valid options are described below.
	# Whitespace is ignored everywhere, except within VALUE. The option
	# list ends with the first line that doesn't match the above syntax.
	# However, a line within the options that begins with a #, but doesn't
	# have a recognizable option name followed by a colon, is considered a
	# comment and entirely ignored.
	#
	# The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
	# two-element lists. The first element of each is an option name, and
	# the second additional arguments to be added on to the end of the
	# option list as given in FILE.d. (If omitted, no additional options
	# are added.)
	#
	# The interesting options are:
	#
	# name: TEST-NAME
	# The name of this test, passed to DejaGNU's `pass' and `fail'
	# commands. If omitted, this defaults to FILE, the root of the
	# .s and .d files' names.
	#
	# as: FLAGS
	# When assembling FILE.s, pass FLAGS to the assembler.
	#
	# PROG: PROGRAM-NAME
	# The name of the program to run to analyze the .o file produced
	# by the assembler. This can be omitted; run_dump_test will guess
	# which program to run by seeing which of the flags options below
	# is present.
	#
	# objdump: FLAGS
	# nm: FLAGS
	# objcopy: FLAGS
	# Use the specified program to analyze the .o file, and pass it
	# FLAGS, in addition to the .o file name. Note that they are run
	# with LC_ALL=C in the environment to give consistent sorting
	# of symbols.
	#
	# source: SOURCE
	# Assemble the file SOURCE.s. If omitted, this defaults to FILE.s.
	# This is useful if several .d files want to share a .s file.
	#
	# target: GLOBS...
	# Run this test only on a specified list of targets. More precisely,
	# each glob in the space-separated list is passed to "istarget"; if
	# it evaluates true for any of them, the test will be run, otherwise
	# it will be marked unsupported.
	#
	# not-target: GLOBS...
	# Do not run this test on a specified list of targets. Again,
	# the each glob in the space-separated list is passed to
	# "istarget", and the test is run if it evaluates false for
	# all of them. Otherwise it will be marked unsupported.
	#
	# skip: GLOBS...
	# not-skip: GLOBS...
	# These are exactly the same as "not-target" and "target",
	# respectively, except that they do nothing at all if the check
	# fails. They should only be used in groups, to construct a single
	# test which is run on all targets but with variant options or
	# expected output on some targets. (For example, see
	# gas/arm/inst.d and gas/arm/wince_inst.d.)
	#
	# error: REGEX
	# An error with message matching REGEX must be emitted for the test
	# to pass. The PROG, objdump, nm and objcopy options have no
	# meaning and need not supplied if this is present.
	#
	# warning: REGEX
	# Expect a gas warning matching REGEX. It is an error to issue
	# both "error" and "warning".
	#
	# stderr: FILE
	# FILE contains regexp lines to be matched against the diagnostic
	# output of the assembler. This does not preclude the use of
	# PROG, nm, objdump, or objcopy.
	#
	# error-output: FILE
	# Means the same as 'stderr', but also indicates that the assembler
	# is expected to exit unsuccessfully (therefore PROG, objdump, nm,
	# and objcopy have no meaning and should not be supplied).
	#
	# Each option may occur at most once.
	#
	# After the option lines come regexp lines. `run_dump_test' calls
	# `regexp_diff' to compare the output of the dumping tool against the
	# regexps in FILE.d. `regexp_diff' is defined later in this file; see
	# further comments there.

	proc run_dump_test { name {extra_options {}} } {
	global subdir srcdir
	global OBJDUMP NM OBJCOPY READELF STRIP
	global OBJDUMPFLAGS NMFLAGS OBJCOPYFLAGS READELFFLAGS STRIPFLAGS
	global host_triplet
	global env
	global copyfile
	global tempfile

	if [string match "/" $name] {
	set file $name
	set name [file tail $name]
	} else {
	set file "$srcdir/$subdir/$name"
	}
	set opt_array [slurp_options "${file}.d"]
	if { $opt_array == -1 } {
	perror "error reading options from $file.d"
	unresolved $subdir/$name
	return
	}
	set opts(addr2line) {}
	set opts(ar) {}
	set opts(nm) {}
	set opts(objcopy) {}
	set opts(objdump) {}
	set opts(strip) {}
	set opts(ranlib) {}
	set opts(readelf) {}
	set opts(size) {}
	set opts(strings) {}
	set opts(name) {}
	set opts(PROG) {}
	set opts(DUMPPROG) {}
	set opts(source) {}
	set opts(target) {}
	set opts(not-target) {}
	set opts(skip) {}
	set opts(not-skip) {}

	foreach i $opt_array {
	set opt_name [lindex $i 0]
	set opt_val [lindex $i 1]
	if ![info exists opts($opt_name)] {
	perror "unknown option $opt_name in file $file.d"
	unresolved $subdir/$name
	return
	}
	if [string length $opts($opt_name)] {
	perror "option $opt_name multiply set in $file.d"
	unresolved $subdir/$name
	return
	}
	set opts($opt_name) $opt_val
	}

	foreach i $extra_options {
	set opt_name [lindex $i 0]
	set opt_val [lindex $i 1]
	if ![info exists opts($opt_name)] {
	perror "unknown option $opt_name given in extra_opts"
	unresolved $subdir/$name
	return
	}
	# add extra option to end of existing option, adding space
	# if necessary.
	if [string length $opts($opt_name)] {
	append opts($opt_name) " "
	}
	append opts($opt_name) $opt_val
	}

	if { $opts(name) == "" } {
	set testname "$subdir/$name"
	} else {
	set testname $opts(name)
	}
	verbose "Testing $testname"

	if {$opts(PROG) == ""} {
	perror "program isn't set in $file.d"
	unresolved $testname
	return
	}

	set destopt ""
	switch -- $opts(PROG) {
	ar { set program ar }
	objcopy { set program objcopy }
	ranlib { set program ranlib }
	strip {
	set program strip
	set destopt "-o"
	}
	strings { set program strings }
	default {
	perror "unrecognized program option $opts(PROG) in $file.d"
	unresolved $testname
	return }
	}

	set dumpprogram ""
	if { $opts(DUMPPROG) != "" } {
	switch -- $opts(DUMPPROG) {
	addr2line { set dumpprogram addr2line }
	nm { set dumpprogram nm }
	objdump { set dumpprogram objdump }
	readelf { set dumpprogram readelf }
	size { set dumpprogram size }
	default {
	perror "unrecognized dump program option $opts(DUMPPROG) in $file.d"
	unresolved $testname
	return }
	}
	} else {
	# Guess which program to run, by seeing which option was specified.
	foreach p {objdump nm readelf} {
	if {$opts($p) != ""} {
	if {$dumpprogram != ""} {
	perror "ambiguous dump program in $file.d"
	unresolved $testname
	return
	} else {
	set dumpprogram $p
	}
	}
	}
	}

	# Handle skipping the test on specified targets.
	# You can have both skip/not-skip and target/not-target, but you can't
	# have both skip and not-skip, or target and not-target, in the same file.
	if { $opts(skip) != "" } then {
	if { $opts(not-skip) != "" } then {
	perror "$testname: mixing skip and not-skip directives is invalid"
	unresolved $testname
	return
	}
	foreach glob $opts(skip) {
	if {[istarget $glob]} { return }
	}
	}
	if { $opts(not-skip) != "" } then {
	set skip 1
	foreach glob $opts(not-skip) {
	if {[istarget $glob]} {
	set skip 0
	break
	}
	}
	if {$skip} { return }
	}
	if { $opts(target) != "" } then {
	if { $opts(not-target) != "" } then {
	perror "$testname: mixing target and not-target directives is invalid"
	unresolved $testname
	return
	}
	set skip 1
	foreach glob $opts(target) {
	if {[istarget $glob]} {
	set skip 0
	break
	}
	}
	if {$skip} {
	unsupported $testname
	return
	}
	}
	if { $opts(not-target) != "" } then {
	foreach glob $opts(not-target) {
	if {[istarget $glob]} {
	unsupported $testname
	return
	}
	}
	}

	if { $opts(source) == "" } {
	set srcfile ${file}.s
	} else {
	set srcfile $srcdir/$subdir/$opts(source)
	}

	set exec_output [binutils_assemble ${srcfile} $tempfile]
	if [string match "" $exec_output] then {
	send_log "$exec_output\n"
	verbose "$exec_output"
	fail $testname
	return
	}

	set progopts1 $opts($program)
	eval set progopts \$[string toupper $program]FLAGS
	eval set binary \$[string toupper $program]

	set exec_output [binutils_run $binary "$progopts $progopts1 $tempfile $destopt ${copyfile}.o"]
	if ![string match "" $exec_output] {
	send_log "$exec_output\n"
	verbose "$exec_output"
	fail $testname
	return
	}

	set progopts1 $opts($dumpprogram)
	eval set progopts \$[string toupper $dumpprogram]FLAGS
	eval set binary \$[string toupper $dumpprogram]

	if { ![is_remote host] && [which $binary] == 0 } {
	untested $testname
	return
	}

	verbose "running $binary $progopts $progopts1" 3

	set cmd "$binary $progopts $progopts1 ${copyfile}.o"

	# Ensure consistent sorting of symbols
	if {[info exists env(LC_ALL)]} {
	set old_lc_all $env(LC_ALL)
	}
	set env(LC_ALL) "C"
	send_log "$cmd\n"
	set comp_output [remote_exec host $cmd "" "/dev/null" "tmpdir/dump.out"]
	if {[info exists old_lc_all]} {
	set env(LC_ALL) $old_lc_all
	} else {
	unset env(LC_ALL)
	}
	if { [lindex $comp_output 0] != 0 } then {
	send_log "$comp_output\n"
	fail $testname
	return
	}
	set comp_output [prune_warnings [lindex $comp_output 1]]
	if ![string match "" $comp_output] then {
	send_log "$comp_output\n"
	fail $testname
	return
	}

	verbose_eval {[file_contents "tmpdir/dump.out"]} 3
	if { [regexp_diff "tmpdir/dump.out" "${file}.d"] } then {
	fail $testname
	verbose "output is [file_contents "tmpdir/dump.out"]" 2
	return
	}

	pass $testname
	}

	proc slurp_options { file } {
	if [catch { set f [open $file r] } x] {
	#perror "couldn't open `$file': $x"
	perror "$x"
	return -1
	}
	set opt_array {}
	# whitespace expression
	set ws {[ ]*}
	set nws {[^ ]*}
	# whitespace is ignored anywhere except within the options list;
	# option names are alphabetic plus dash
	set pat "^#${ws}(\[a-zA-Z-\])$ws:${ws}(.)$ws\$"
	while { [gets $f line] != -1 } {
	set line [string trim $line]
	# Whitespace here is space-tab.
	if [regexp $pat $line xxx opt_name opt_val] {
	# match!
	lappend opt_array [list $opt_name $opt_val]
	} elseif {![regexp "^#" $line ]} {
	break
	}
	}
	close $f
	return $opt_array
	}

	# regexp_diff, based on simple_diff taken from ld test suite
	# compares two files line-by-line
	# file1 contains strings, file2 contains regexps and #-comments
	# blank lines are ignored in either file
	# returns non-zero if differences exist
	#
	proc regexp_diff { file_1 file_2 } {

	set eof -1
	set end_1 0
	set end_2 0
	set differences 0
	set diff_pass 0

	if [file exists $file_1] then {
	set file_a [open $file_1 r]
	} else {
	perror "$file_1 doesn't exist"
	return 1
	}

	if [file exists $file_2] then {
	set file_b [open $file_2 r]
	} else {
	perror "$file_2 doesn't exist"
	close $file_a
	return 1
	}

	verbose " Regexp-diff'ing: $file_1 $file_2" 2

	while { 1 } {
	set line_a ""
	set line_b ""
	while { [string length $line_a] == 0 } {
	if { [gets $file_a line_a] == $eof } {
	set end_1 1
	break
	}
	}
	while { [string length $line_b] == 0 \|\| [string match "#*" $line_b] } {
	if [ string match "#pass" $line_b ] {
	set end_2 1
	set diff_pass 1
	break
	} elseif [ string match "#..." $line_b ] {
	if { [gets $file_b line_b] == $eof } {
	set end_2 1
	set diff_pass 1
	break
	}
	verbose "looking for \"^$line_b$\"" 3
	while { ![regexp "^$line_b$" "$line_a"] } {
	verbose "skipping \"$line_a\"" 3
	if { [gets $file_a line_a] == $eof } {
	set end_1 1
	break
	}
	}
	break
	}
	if { [gets $file_b line_b] == $eof } {
	set end_2 1
	break
	}
	}

	if { $diff_pass } {
	break
	} elseif { $end_1 && $end_2 } {
	break
	} elseif { $end_1 } {
	send_log "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1\n"
	verbose "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1" 3
	set differences 1
	break
	} elseif { $end_2 } {
	send_log "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n"
	verbose "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" 3
	set differences 1
	break
	} else {
	verbose "regexp \"^$line_b$\"\nline \"$line_a\"" 3
	if ![regexp "^$line_b$" "$line_a"] {
	send_log "regexp_diff match failure\n"
	send_log "regexp \"^$line_b$\"\nline \"$line_a\"\n"
	verbose "regexp_diff match failure\n" 3
	set differences 1
	}
	}
	}

	if { $differences == 0 && !$diff_pass && [eof $file_a] != [eof $file_b] } {
	send_log "$file_1 and $file_2 are different lengths\n"
	verbose "$file_1 and $file_2 are different lengths" 3
	set differences 1
	}

	close $file_a
	close $file_b

	return $differences
	}

	proc file_contents { filename } {
	set file [open $filename r]
	set contents [read $file]
	close $file
	return $contents
	}

	proc verbose_eval { expr { level 1 } } {
	global verbose
	if $verbose>$level then { eval verbose "$expr" $level }
	}