Subversion Repositories openrisc_2011-10-31

# Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2003,

# 2004, 2005, 2007 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:

# dejagnu@gnu.org

# This file was written by Ken Raeburn (raeburn@cygnus.com).

proc gas_version {} {

    global AS

    if [is_remote host] then {

        remote_exec host "$AS -version < /dev/null" "" "" "gas.version"

        remote_exec host "which $AS" "" "" "gas.which"

        remote_upload host "gas.version"

        remote_upload host "gas.which"

        set which_as [file_contents "gas.which"]

        set tmp [file_contents "gas.version"]

        remote_file build delete "gas.version"

        remote_file build delete "gas.which"

        remote_file host delete "gas.version"

        remote_file host delete "gas.which"

    } else {

        set which_as [which $AS]

        catch "exec $AS -version < /dev/null" tmp

    }

    # 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 "$which_as (no version number)\n"

    }

    clone_output "$which_as $number\n"

    unset version

}

proc gas_host_run { cmd redir } {

    verbose "Executing $cmd $redir"

    set return_contents_of ""

    if [regexp ">& */dev/null" $redir] then {

        set output_file ""

        set command "$cmd $redir"

    } elseif [regexp "> */dev/null" $redir] then {

        set output_file ""

        set command "$cmd 2>gas.stderr"

        set return_contents_of "gas.stderr"

    } elseif [regexp ">&.*" $redir] then {

        # See PR 5322 for why the following line is used.

        regsub ">&" $redir "" output_file

        set command "$cmd 2>&1"

    } elseif [regexp "2>.*" $redir] then {

        set output_file "gas.out"

        set command "$cmd $redir"

        set return_contents_of "gas.out"

    } elseif [regexp ">.*" $redir] then {

        set output_file ""

        set command "$cmd $redir 2>gas.stderr"

        set return_contents_of "gas.stderr"

    } elseif { "$redir" == "" } then {

        set output_file "gas.out"

        set command "$cmd 2>&1"

        set return_contents_of "gas.out"

    } else {

        fail "gas_host_run: unknown form of redirection string"

    }

    set status [remote_exec host [concat sh -c [list $command]] "" "/dev/null" "$output_file"]

    set to_return ""

    if { "$return_contents_of" != "" } then {

        remote_upload host "$return_contents_of"

        set to_return [file_contents "$return_contents_of"]

        regsub "\n$" $to_return "" to_return

    }

    if { [lindex $status 0] == 0 && "$output_file" != ""

         && "$output_file" != "$return_contents_of" } then {

        remote_upload host "$output_file"

    }

    return [list [lindex $status 0] "$to_return"]

}

proc gas_run { prog as_opts redir } {

    global AS

    global ASFLAGS

    global comp_output

    global srcdir

    global subdir

    global host_triplet

    set status [gas_host_run "$AS $ASFLAGS $as_opts $srcdir/$subdir/$prog" "$redir"]

    set comp_output [lindex $status 1]

    if { [lindex $status 0] != 0 && [regexp "2>.*" $redir] } then {

        append comp_output "child process exited abnormally"

    }

    set comp_output [prune_warnings $comp_output]

    verbose "output was $comp_output"

    return [list $comp_output ""]

}

proc all_ones { args } {

    foreach x $args { if [expr $x!=1] { return 0 } }

    return 1

}

# ${tool}_finish (gas_finish) will be called by runtest.exp.  But

# gas_finish should only be used with gas_start.  We use gas_started

# to tell gas_finish if gas_start has been called so that runtest.exp

# can call gas_finish without closing the wrong fd.

set gas_started 0

proc gas_start { prog as_opts } {

    global AS

    global ASFLAGS

    global srcdir

    global subdir

    global spawn_id

    global gas_started

    set gas_started 1

    verbose -log "Starting $AS $ASFLAGS $as_opts $prog" 2

    set status [gas_host_run "$AS $ASFLAGS $as_opts $srcdir/$subdir/$prog" ">&gas.out"]

    spawn -noecho -nottycopy cat gas.out

}

proc gas_finish { } {

    global spawn_id

    global gas_started

    if { $gas_started == 1 } {

        catch "close"

        catch "wait"

        set gas_started 0

    }

}

proc want_no_output { testname } {

    global comp_output

    if ![string match "" $comp_output] then {

        send_log "$comp_output\n"

        verbose "$comp_output" 3

    }

    if [string match "" $comp_output] then {

        pass "$testname"

        return 1

    } else {

        fail "$testname"

        return 0

    }

}

proc gas_test_old { file as_opts testname } {

    gas_run $file $as_opts ""

    return [want_no_output $testname]

}

proc gas_test { file as_opts var_opts testname } {

    global comp_output

    set i 0

    foreach word $var_opts {

        set ignore_stdout($i) [string match "*>" $word]

        set opt($i) [string trim $word {>}]

        incr i

    }

    set max [expr 1<<$i]

    for {set i 0} {[expr $i<$max]} {incr i} {

        set maybe_ignore_stdout ""

        set extra_opts ""

        for {set bit 0} {(1<<$bit)<$max} {incr bit} {

            set num [expr 1<<$bit]

            if [expr $i&$num] then {

                set extra_opts "$extra_opts $opt($bit)"

                if $ignore_stdout($bit) then {

                    set maybe_ignore_stdout ">/dev/null"

                }

            }

        }

        set extra_opts [string trim $extra_opts]

        gas_run $file "$as_opts $extra_opts" $maybe_ignore_stdout

        # Should I be able to use a conditional expression here?

        if [string match "" $extra_opts] then {

            want_no_output $testname

        } else {

            want_no_output "$testname ($extra_opts)"

        }

    }

    if [info exists errorInfo] then {

        unset errorInfo

    }

}

proc gas_test_ignore_stdout { file as_opts testname } {

    global comp_output

    gas_run $file $as_opts ">/dev/null"

    want_no_output $testname

}

proc gas_test_error { file as_opts testname } {

    global comp_output

    gas_run $file $as_opts ">/dev/null"

    if ![string match "" $comp_output] then {

        send_log "$comp_output\n"

        verbose "$comp_output" 3

    }

    if [string match "" $comp_output] then {

        fail "$testname"

    } else {

        pass "$testname"

    }

}

proc gas_exit {} {}

proc gas_init { args } {

    global target_cpu

    global target_cpu_family

    global target_family

    global target_vendor

    global target_os

    global stdoptlist

    case "$target_cpu" in {

        "m68???"                { set target_cpu_family m68k }

        "i[3-7]86"              { set target_cpu_family i386 }

        default                 { set target_cpu_family $target_cpu }

    }

    set target_family "$target_cpu_family-$target_vendor-$target_os"

    set stdoptlist "-a>"

    if ![istarget "*-*-*"] {

        perror "Target name [istarget] is not a triple."

    }

    # Need to return an empty string.

    return

}

#

# 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 *-*-linux*] \

         && ![istarget frv-*-uclinux*] \

         && ![istarget *-*-irix5*] \

         && ![istarget *-*-irix6*] \

         && ![istarget *-*-netbsd*] \

         && ![istarget *-*-openbsd*] \

         && ![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

    }

    if { [istarget arm-*-openbsd*] \

         || [istarget i386-*-openbsd\[0-2\].*] \

         || [istarget i386-*-openbsd3.\[0-3\]] \

         || [istarget m68*-*-openbsd*] \

         || [istarget ns32k-*-openbsd*] \

         || [istarget sparc-*-openbsd\[0-2\].*] \

         || [istarget sparc-*-openbsd3.\[0-1\]] \

         || [istarget vax-*-openbsd*] } {

        return 0

    }

    return 1

}

# run_dump_tests TESTCASES EXTRA_OPTIONS

# Wrapper for run_dump_test, which is suitable for invoking as

#   run_dump_tests [lsort [glob -nocomplain $srcdir/$subdir/*.d]]

# EXTRA_OPTIONS are passed down to run_dump_test.  Honors runtest_file_p.

# Body cribbed from dg-runtest.

proc run_dump_tests { testcases {extra_options {}} } {

    global runtests

    foreach testcase $testcases {

        # If testing specific files and this isn't one of them, skip it.

        if ![runtest_file_p $runtests $testcase] {

            continue

        }

        run_dump_test [file rootname [file tail $testcase]] $extra_options

    }

}

# 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 AS OBJCOPY READELF

    global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS

    global host_triplet

    global env

    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(as) {}

    set opts(objdump) {}

    set opts(nm) {}

    set opts(objcopy) {}

    set opts(readelf) {}

    set opts(name) {}

    set opts(PROG) {}

    set opts(source) {}

    set opts(stderr) {}

    set opts(error) {}

    set opts(error-output) {}

    set opts(warning) {}

    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

        }

        if { $opt_name == "as" } {

            set opt_val [subst $opt_val]

        }

        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 { (($opts(warning) != "") && ($opts(error) != "")) \

         || (($opts(warning) != "") && ($opts(stderr) != "")) \

         || (($opts(error-output) != "") && ($opts(stderr) != "")) \

         || (($opts(error-output) != "") && ($opts(error) != "")) \

         || (($opts(error-output) != "") && ($opts(warning) != "")) } {

        perror "$testname: bad mix of stderr, error-output, error, and warning test-directives"

        unresolved $testname

        return

    }

    if { $opts(error-output) != "" } then {

        set opts(stderr) $opts(error-output)

    }

    set program ""

    # It's meaningless to require an output-testing method when we

    # expect an error.

    if { $opts(error) == "" && $opts(error-output) == "" } {

        if {$opts(PROG) != ""} {

            switch -- $opts(PROG) {

                objdump { set program objdump }

                nm      { set program nm }

                objcopy { set program objcopy }

                readelf { set program readelf }

                default {

                    perror "unrecognized program option $opts(PROG) in $file.d"

                    unresolved $testname

                    return }

            }

        } else {

            # Guess which program to run, by seeing which option was specified.

            foreach p {objdump objcopy nm readelf} {

                if {$opts($p) != ""} {

                    if {$program != ""} {

                        perror "ambiguous dump program in $file.d"

                        unresolved $testname

                        return

                    } else {

                        set program $p

                    }

                }

            }

        }

        if { $program == "" && $opts(warning) == "" } {

            perror "dump program unspecified in $file.d"

            unresolved $testname

            return

        }

    }

    # 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 sourcefile ${file}.s

    } else {

        set sourcefile $srcdir/$subdir/$opts(source)

    }

    set cmd "$AS $ASFLAGS $opts(as) -o dump.o $sourcefile"

    send_log "$cmd\n"

    set status [gas_host_run $cmd ""]

    set cmdret [lindex $status 0]

    set comp_output [prune_warnings [lindex $status 1]]

    set expmsg $opts(error)

    if { $opts(warning) != "" } {

        set expmsg $opts(warning)

    }

    if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then {

        # If the executed program writes to stderr and stderr is not

        # redirected, exec *always* returns failure, regardless of the

        # program exit code.  Thankfully, we can retrieve the true

        # return status from a special variable.  Redirection would

        # cause a tcl-specific message to be appended, and we'd rather

        # not deal with that if we can help it.

        global errorCode

        if { $cmdret != 0 && [lindex $errorCode 0] == "NONE" } {

            set cmdret 0

        }

        set exitstat "succeeded"

        if { $cmdret != 0 } { set exitstat "failed" }

        send_log "$comp_output\n"

        verbose "$comp_output" 3

        if { $opts(stderr) == "" }  then {

            if { [regexp $expmsg $comp_output] \

                    && (($cmdret == 0) == ($opts(warning) != "")) } {

                # We have the expected output from gas.

                # Return if there's nothing more to do.

                if { $opts(error) != "" || $program == "" } {

                    pass $testname

                    return

                }

            } else {

                verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"

                fail $testname

                return

            }

        } else {

            catch {write_file dump.stderr "$comp_output"} write_output

            if ![string match "" $write_output] then {

                send_log "error writing dump.stderr: $write_output\n"

                verbose "error writing dump.stderr: $write_output" 3

                send_log "$comp_output\n"

                verbose "$comp_output" 3

                fail $testname

                return

            }

            set stderrfile $srcdir/$subdir/$opts(stderr)

            verbose "wrote pruned stderr to dump.stderr" 3

            if { [regexp_diff "dump.stderr" "$stderrfile"] } then {

                if { $opts(error) != "" } {

                    verbose -log "$exitstat with: <$comp_output>, expected: <$opts(error)>"

                    if [regexp $opts(error) $comp_output] {

                        pass $testname

                        return

                    }

                }

                fail $testname

                verbose "pruned stderr is [file_contents "dump.stderr"]" 2

                return

            } elseif { $opts(error-output) != "" } then {

                pass $testname

                return

            }

        }

    }

    if { $program == "" } {

        return

    }

    set progopts1 $opts($program)

    eval set progopts \$[string toupper $program]FLAGS

    eval set binary \$[string toupper $program]

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

        untested $testname

        return

    }

    if { $progopts1 == "" } { set $progopts1 "-r" }

    verbose "running $binary $progopts $progopts1" 3

    # Objcopy, unlike the other two, won't send its output to stdout,

    # so we have to run it specially.

    set cmd "$binary $progopts $progopts1 dump.o"

    set redir ">dump.out"

    if { $program == "objcopy" } {

        set cmd "$binary $progopts $progopts1 dump.o dump.out"

        set redir ""

    }

    # 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 status [gas_host_run "$cmd" "$redir"]

    set comp_output [prune_warnings [lindex $status 1]]

    if {[info exists old_lc_all]} {

        set env(LC_ALL) $old_lc_all

    } else {

        unset env(LC_ALL)

    }

    set comp_output [prune_warnings $comp_output]

    if ![string match "" $comp_output] then {

        send_log "$comp_output\n"

        fail $testname

        return

    }

    verbose_eval {[file_contents "dump.out"]} 3

    if { [regexp_diff "dump.out" "${file}.d"] } then {

        fail $testname

        verbose "output is [file_contents "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

}

proc objdump { opts } {

    global OBJDUMP

    global comp_output

    global host_triplet

    set status [gas_host_run "$OBJDUMP $opts" ""]

    set comp_output [prune_warnings [lindex $status 1]]

    verbose "objdump output=$comp_output\n" 3

}

proc objdump_start_no_subdir { prog opts } {

    global OBJDUMP

    global srcdir

    global spawn_id

    verbose "Starting $OBJDUMP $opts $prog" 2

    set status [gas_host_run "$OBJDUMP $opts $prog" ">&gas.out"]

    spawn -noecho -nottycopy cat gas.out

}

proc objdump_finish { } {

    global spawn_id

    catch "close"

    catch "wait"

}

# Default timeout is 10 seconds, loses on a slow machine.  But some

# configurations of dejagnu may override it.

if {$timeout<120} then { set timeout 120 }

expect_after -i {

    timeout                     { perror "timeout" }

    "virtual memory exhausted"  { perror "virtual memory exhausted" }

    buffer_full                 { perror "buffer full" }

    eof                         { perror "eof" }

}

# 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 write_file { filename contents } {

    set file [open $filename w]

    puts $file "$contents"

    close $file

}

proc verbose_eval { expr { level 1 } } {

    global verbose

    if $verbose>$level then { eval verbose "$expr" $level }

}

# This definition is taken from an unreleased version of DejaGnu.  Once

# that version gets released, and has been out in the world for a few

# months at least, it may be safe to delete this copy.

if ![string length [info proc prune_warnings]] {