ld/testsuite/ld-sh/sh64/sh64.exp - third_party/binutils-gdb - Git at Google

 # Expect script for ld-sh tests
 #   Copyright (C) 2000, 2001, 2002 Free Software Foundation
 #
 # This file 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 #

 # Test SH linking; all types of relocs.  This tests the assembler and
 # tools like objdump as well as the linker.

 if ![istarget sh64-*-*] {
     return
 }

 # FIXME: This isn't set by testsuite/config/default.exp; make it.
 if ![info exists readelf] then {
     set readelf [findfile $base_dir/../binutils/readelf]
 }

 # List contains test-items with 3 items followed by 2 lists:
 # 0:name 1:ld options 2:assembler options
 # 3:filenames of assembler files 4: action and options.

 # Actions:
 # objdump: Apply objdump options on result.  Compare with regex (last arg).
 # nm: Apply nm options on result.  Compare with regex (last arg).

 # Note that the contents dump is the same for "inter-file datalabel
 # references, 64-bit ABI" as for 32-bit ABI and ELF so we re-use it.

 set sh64tests {
     {"SH64 linking, 64-bit ABI" "-mshelf64"
      "--abi=64" {sh64-1.s sh64-2.s}
      {{objdump -sr abi64.sd} {objdump -x abi64.xd}}}
     {"SH64 linking, 64-bit ABI, -no-expand" "-mshelf64"
      "--abi=64 -no-expand" {sh64-1.s sh64-2.s}
      {{objdump -sr abixx-noexp.sd}}}
     {"SH64 linking, 32-bit ABI" "-mshelf32"
      "--abi=32" {sh64-1.s sh64-2.s}
      {{objdump -sr abi32.sd} {objdump -x abi32.xd}}}
     {"SH64 linking, 32-bit ABI, -no-expand" "-mshelf32"
      "--abi=32 -no-expand" {sh64-1.s sh64-2.s}
      {{objdump -sr abixx-noexp.sd}}}
     {"SH64 linking, single multi-ISA object" "-mshelf32"
      "--abi=32" {shmix-1.s}
      {{objdump -sr mix1.sd} {objdump -x mix1.xd}}}
     {"SH64 linking, single multi-ISA object, -no-expand" "-mshelf32"
      "--abi=32 -no-expand" {shmix-1.s}
      {{objdump -sr mix1-noexp.sd}}}
     {"SH64 linking, two different-ISA objects" "-mshelf32"
      "--abi=32" {shmix-2.s shmix-3.s}
      {{objdump -sr mix2.sd} {objdump -x mix2.xd}}}
     {"SH64 linking, two different-ISA objects, -no-expand" "-mshelf32"
      "--abi=32 -no-expand" {shmix-2.s shmix-3.s}
      {{objdump -sr mix2-noexp.sd}}}
     {"SH64 linking, single SHcompact" "-mshelf32"
      "--isa=SHcompact" {shcmp-1.s}
      {{objdump -sr cmpct1.sd} {objdump -x cmpct1.xd}}}
     {"SH64 inter-file datalabel references, 64-bit ABI" "-mshelf64"
      "--abi=64" {shdl-1.s shdl-2.s}
      {{objdump -sr shdl64.sd} {objdump -x shdl64.xd}}}
     {"SH64 inter-file datalabel references, 32-bit ABI" "-mshelf32"
      "--abi=32" {shdl-1.s shdl-2.s}
      {{objdump -sr shdl64.sd} {objdump -x shdl32.xd}}}
     {"SH64 simple partial linking, 32-bit ABI" "-mshelf32 -r"
      "--abi=32" {rel-1.s rel-2.s}
      {{objdump -sx rel32.xd}}}
     {"SH64 simple partial linking, 64-bit ABI" "-mshelf64 -r"
      "--abi=64" {rel-1.s rel-2.s}
      {{objdump -sx rel64.xd}}}
     {"SH64 partial linking with datalabel references, 32-bit ABI" "-mshelf32 -r"
      "--abi=32" {reldl-1.s reldl-2.s}
      {{readelf {-s -r -x 1 -x 3} reldl32.rd}}}
     {"SH64 partial linking with datalabel references, 64-bit ABI" "-mshelf64 -r"
      "--abi=64" {reldl-1.s reldl-2.s}
      {{readelf {-s -r -x 1 -x 3} reldl64.rd}}}
     {"Handling SH64 assembler-generated .cranges" "-mshelf32"
      "--abi=32" {crange-2a.s crange-1.s}
      {{readelf {-S -s -r -x 1 -x 2 -x 9} crange1.rd}}}
     {"Handling SH64 assembler-generated .cranges, partial linking" "-mshelf32 -r"
      "--abi=32" {crange-2a.s}
      {{readelf {-S -s -r -x 2 -x 5} crangerel1.rd}}}
     {"Mixing SH64 assembler-generated with linker-generated .cranges" "-mshelf32"
      "--abi=32" {crange-2a.s crange-2b.s crange-1.s}
      {{readelf {-S -s -r -x 2 -x 9} crange2.rd}}}
     {"Mixing SH64 assembler-generated with linker-generated .cranges, partial linking"
      "-mshelf32 -r"
      "--abi=32" {crange-2a.s crange-2c.s crange-2d.s crange-2e.s}
      {{readelf {-S -s -r -x 2 -x 5} crangerel2.rd}}}
     {"Merge and use of SH64 .cranges, some not originally in order" "-mshelf32"
      "--abi=32"
      {crange-2e.s crange-2f.s crange-2g.s crange-2a.s crange-2d.s crange-2i.s
       crange-2h.s crange-1.s}
       {{readelf {-S -s -x 2 -x 9} crange3.rd} {objdump -d crange3.dd}}}
     {"Sorted SH64 .cranges, entry at SHcompact code" "-mshelf32 --entry diversion"
      "--abi=32"
      {crange-2e.s crange-2f.s crange-2g.s crange-2a.s crange-2d.s crange-2i.s
       crange-2h.s crange-1.s}
       {{readelf {-h -S -s -x 2 -x 9} crange3-cmpct.rd}}}
     {"Sorted SH64 .cranges, entry at SHmedia code" "-mshelf32 --entry diversion2"
      "--abi=32"
      {crange-2e.s crange-2f.s crange-2g.s crange-2a.s crange-2d.s crange-2i.s
       crange-2h.s crange-1.s}
       {{readelf {-h -S -s -x 2 -x 9} crange3-media.rd}}}
     {"SH64 Big Endianness" "-mshelf64 -Tendian.ld"
      "--abi=64" {endian.s}
      {{objdump -s endian.sbd} {objdump -d endian.dbd}}}
     {"SH64 Little Endianness" "-mshlelf64 -Tendian.ld"
      "--abi=64 --little" {endian.s}
      {{objdump -s endian.sld} {objdump -d endian.dld}}}

 }

 # FIXME: Generalize and move this to ld-lib.exp

 proc run_ld_link_tests { ldtests } {
     global ld
     global as
     global nm
     global objdump
     global readelf
     global srcdir
     global subdir

     set binfile "tmpdir/linked"

     foreach testitem $ldtests {
 	set testname [lindex $testitem 0]
 	set ld_options [lindex $testitem 1]
 	set as_options [lindex $testitem 2]
 	set as_files  [lindex $testitem 3]
 	set actions [lindex $testitem 4]
 	set objfiles {}
 	set is_unresolved 0
 	set failed 0

 #	verbose -log "Testname is $testname"
 #	verbose -log "ld_options is $ld_options"
 #	verbose -log "as_options is $as_options"
 #	verbose -log "as_files is $as_files"
 #	verbose -log "actions is $actions"

 	# Assemble each file in the test.
 	foreach as_file $as_files {
 	    set objfile "tmpdir/[file rootname $as_file].o"
 	    lappend objfiles $objfile

 	    if ![ld_assemble $as "$as_options $srcdir/$subdir/$as_file" $objfile] {
 		set is_unresolved 1
 		break
 	    }
 	}

 	# Catch assembler errors.
 	if { $is_unresolved != 0 } {
 	    unresolved $testname
 	    continue
 	}

 	if ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
 	    fail $testname
 	} else {
 	    set failed 0
 	    foreach actionlist $actions {
 		set action [lindex $actionlist 0]
 		set progopts [lindex $actionlist 1]

 		# There are actions where we run regexp_diff on the
 		# output, and there are other actions (presumably).
 		# Handling of the former look the same.
 		set dump_prog ""
 		switch -- $action {
 		    objdump
 		        { set dump_prog $objdump }
 		    nm
 		        { set dump_prog $nm }
 		    readelf
 		        { set dump_prog $readelf }
 		    default
 			{
 			    perror "Unrecognized action $action"
 			    set is_unresolved 1
 			    break
 			}
 		    }

 		if { $dump_prog != "" } {
 		    set dumpfile [lindex $actionlist 2]
 		    set binary $dump_prog

 		    send_log "$binary $progopts $binfile > dump.out\n"
 		    catch "exec $binary $progopts $binfile > dump.out" comp_output
 		    set comp_output [prune_warnings $comp_output]

 		    if ![string match "" $comp_output] then {
 			send_log "$comp_output\n"
 			set failed 1
 			break
 		    }

 		    if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
 			verbose "output is [file_contents "dump.out"]" 2
 			set failed 1
 			break
 		    }
 		}
 	    }

 	    if { $failed != 0 } {
 		fail $testname
 	    } else { if { $is_unresolved == 0 } {
 		pass $testname
 	    } }
 	}

 	# Catch action errors.
 	if { $is_unresolved != 0 } {
 	    unresolved $testname
 	    continue
 	}
     }
 }

 # FIXME: Move this to ld-lib.exp or higher up.

 # 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 $file_1 r]
     } else {
 	warning "$file_1 doesn't exist"
 	return 1
     }

     if [file exists $file_2] then {
 	set file_b [open $file_2 r]
     } else {
 	fail "$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] == $eof } {
 		    set end_2 1
 		    break
 		}
 		verbose "looking for \"^$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"
 		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
 }

 run_ld_link_tests $sh64tests
	# Expect script for ld-sh tests
	# Copyright (C) 2000, 2001, 2002 Free Software Foundation
	#
	# This file 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	#

	# Test SH linking; all types of relocs. This tests the assembler and
	# tools like objdump as well as the linker.

	if ![istarget sh64--] {
	return
	}

	# FIXME: This isn't set by testsuite/config/default.exp; make it.
	if ![info exists readelf] then {
	set readelf [findfile $base_dir/../binutils/readelf]
	}

	# List contains test-items with 3 items followed by 2 lists:
	# 0:name 1:ld options 2:assembler options
	# 3:filenames of assembler files 4: action and options.

	# Actions:
	# objdump: Apply objdump options on result. Compare with regex (last arg).
	# nm: Apply nm options on result. Compare with regex (last arg).

	# Note that the contents dump is the same for "inter-file datalabel
	# references, 64-bit ABI" as for 32-bit ABI and ELF so we re-use it.

	set sh64tests {
	{"SH64 linking, 64-bit ABI" "-mshelf64"
	"--abi=64" {sh64-1.s sh64-2.s}
	{{objdump -sr abi64.sd} {objdump -x abi64.xd}}}
	{"SH64 linking, 64-bit ABI, -no-expand" "-mshelf64"
	"--abi=64 -no-expand" {sh64-1.s sh64-2.s}
	{{objdump -sr abixx-noexp.sd}}}
	{"SH64 linking, 32-bit ABI" "-mshelf32"
	"--abi=32" {sh64-1.s sh64-2.s}
	{{objdump -sr abi32.sd} {objdump -x abi32.xd}}}
	{"SH64 linking, 32-bit ABI, -no-expand" "-mshelf32"
	"--abi=32 -no-expand" {sh64-1.s sh64-2.s}
	{{objdump -sr abixx-noexp.sd}}}
	{"SH64 linking, single multi-ISA object" "-mshelf32"
	"--abi=32" {shmix-1.s}
	{{objdump -sr mix1.sd} {objdump -x mix1.xd}}}
	{"SH64 linking, single multi-ISA object, -no-expand" "-mshelf32"
	"--abi=32 -no-expand" {shmix-1.s}
	{{objdump -sr mix1-noexp.sd}}}
	{"SH64 linking, two different-ISA objects" "-mshelf32"
	"--abi=32" {shmix-2.s shmix-3.s}
	{{objdump -sr mix2.sd} {objdump -x mix2.xd}}}
	{"SH64 linking, two different-ISA objects, -no-expand" "-mshelf32"
	"--abi=32 -no-expand" {shmix-2.s shmix-3.s}
	{{objdump -sr mix2-noexp.sd}}}
	{"SH64 linking, single SHcompact" "-mshelf32"
	"--isa=SHcompact" {shcmp-1.s}
	{{objdump -sr cmpct1.sd} {objdump -x cmpct1.xd}}}
	{"SH64 inter-file datalabel references, 64-bit ABI" "-mshelf64"
	"--abi=64" {shdl-1.s shdl-2.s}
	{{objdump -sr shdl64.sd} {objdump -x shdl64.xd}}}
	{"SH64 inter-file datalabel references, 32-bit ABI" "-mshelf32"
	"--abi=32" {shdl-1.s shdl-2.s}
	{{objdump -sr shdl64.sd} {objdump -x shdl32.xd}}}
	{"SH64 simple partial linking, 32-bit ABI" "-mshelf32 -r"
	"--abi=32" {rel-1.s rel-2.s}
	{{objdump -sx rel32.xd}}}
	{"SH64 simple partial linking, 64-bit ABI" "-mshelf64 -r"
	"--abi=64" {rel-1.s rel-2.s}
	{{objdump -sx rel64.xd}}}
	{"SH64 partial linking with datalabel references, 32-bit ABI" "-mshelf32 -r"
	"--abi=32" {reldl-1.s reldl-2.s}
	{{readelf {-s -r -x 1 -x 3} reldl32.rd}}}
	{"SH64 partial linking with datalabel references, 64-bit ABI" "-mshelf64 -r"
	"--abi=64" {reldl-1.s reldl-2.s}
	{{readelf {-s -r -x 1 -x 3} reldl64.rd}}}
	{"Handling SH64 assembler-generated .cranges" "-mshelf32"
	"--abi=32" {crange-2a.s crange-1.s}
	{{readelf {-S -s -r -x 1 -x 2 -x 9} crange1.rd}}}
	{"Handling SH64 assembler-generated .cranges, partial linking" "-mshelf32 -r"
	"--abi=32" {crange-2a.s}
	{{readelf {-S -s -r -x 2 -x 5} crangerel1.rd}}}
	{"Mixing SH64 assembler-generated with linker-generated .cranges" "-mshelf32"
	"--abi=32" {crange-2a.s crange-2b.s crange-1.s}
	{{readelf {-S -s -r -x 2 -x 9} crange2.rd}}}
	{"Mixing SH64 assembler-generated with linker-generated .cranges, partial linking"
	"-mshelf32 -r"
	"--abi=32" {crange-2a.s crange-2c.s crange-2d.s crange-2e.s}
	{{readelf {-S -s -r -x 2 -x 5} crangerel2.rd}}}
	{"Merge and use of SH64 .cranges, some not originally in order" "-mshelf32"
	"--abi=32"
	{crange-2e.s crange-2f.s crange-2g.s crange-2a.s crange-2d.s crange-2i.s
	crange-2h.s crange-1.s}
	{{readelf {-S -s -x 2 -x 9} crange3.rd} {objdump -d crange3.dd}}}
	{"Sorted SH64 .cranges, entry at SHcompact code" "-mshelf32 --entry diversion"
	"--abi=32"
	{crange-2e.s crange-2f.s crange-2g.s crange-2a.s crange-2d.s crange-2i.s
	crange-2h.s crange-1.s}
	{{readelf {-h -S -s -x 2 -x 9} crange3-cmpct.rd}}}
	{"Sorted SH64 .cranges, entry at SHmedia code" "-mshelf32 --entry diversion2"
	"--abi=32"
	{crange-2e.s crange-2f.s crange-2g.s crange-2a.s crange-2d.s crange-2i.s
	crange-2h.s crange-1.s}
	{{readelf {-h -S -s -x 2 -x 9} crange3-media.rd}}}
	{"SH64 Big Endianness" "-mshelf64 -Tendian.ld"
	"--abi=64" {endian.s}
	{{objdump -s endian.sbd} {objdump -d endian.dbd}}}
	{"SH64 Little Endianness" "-mshlelf64 -Tendian.ld"
	"--abi=64 --little" {endian.s}
	{{objdump -s endian.sld} {objdump -d endian.dld}}}

	}

	# FIXME: Generalize and move this to ld-lib.exp

	proc run_ld_link_tests { ldtests } {
	global ld
	global as
	global nm
	global objdump
	global readelf
	global srcdir
	global subdir

	set binfile "tmpdir/linked"

	foreach testitem $ldtests {
	set testname [lindex $testitem 0]
	set ld_options [lindex $testitem 1]
	set as_options [lindex $testitem 2]
	set as_files [lindex $testitem 3]
	set actions [lindex $testitem 4]
	set objfiles {}
	set is_unresolved 0
	set failed 0

	# verbose -log "Testname is $testname"
	# verbose -log "ld_options is $ld_options"
	# verbose -log "as_options is $as_options"
	# verbose -log "as_files is $as_files"
	# verbose -log "actions is $actions"

	# Assemble each file in the test.
	foreach as_file $as_files {
	set objfile "tmpdir/[file rootname $as_file].o"
	lappend objfiles $objfile

	if ![ld_assemble $as "$as_options $srcdir/$subdir/$as_file" $objfile] {
	set is_unresolved 1
	break
	}
	}

	# Catch assembler errors.
	if { $is_unresolved != 0 } {
	unresolved $testname
	continue
	}

	if ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
	fail $testname
	} else {
	set failed 0
	foreach actionlist $actions {
	set action [lindex $actionlist 0]
	set progopts [lindex $actionlist 1]

	# There are actions where we run regexp_diff on the
	# output, and there are other actions (presumably).
	# Handling of the former look the same.
	set dump_prog ""
	switch -- $action {
	objdump
	{ set dump_prog $objdump }
	nm
	{ set dump_prog $nm }
	readelf
	{ set dump_prog $readelf }
	default
	{
	perror "Unrecognized action $action"
	set is_unresolved 1
	break
	}
	}

	if { $dump_prog != "" } {
	set dumpfile [lindex $actionlist 2]
	set binary $dump_prog

	send_log "$binary $progopts $binfile > dump.out\n"
	catch "exec $binary $progopts $binfile > dump.out" comp_output
	set comp_output [prune_warnings $comp_output]

	if ![string match "" $comp_output] then {
	send_log "$comp_output\n"
	set failed 1
	break
	}

	if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
	verbose "output is [file_contents "dump.out"]" 2
	set failed 1
	break
	}
	}
	}

	if { $failed != 0 } {
	fail $testname
	} else { if { $is_unresolved == 0 } {
	pass $testname
	} }
	}

	# Catch action errors.
	if { $is_unresolved != 0 } {
	unresolved $testname
	continue
	}
	}
	}

	# FIXME: Move this to ld-lib.exp or higher up.

	# 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 $file_1 r]
	} else {
	warning "$file_1 doesn't exist"
	return 1
	}

	if [file exists $file_2] then {
	set file_b [open $file_2 r]
	} else {
	fail "$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] == $eof } {
	set end_2 1
	break
	}
	verbose "looking for \"^$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"
	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
	}

	run_ld_link_tests $sh64tests