gas/testsuite/lib/gas-defs.exp

   1 # Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2 # 2004, 2005 Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # dejagnu@gnu.org
  20
  21 # This file was written by Ken Raeburn (raeburn@cygnus.com).
  22
  23 proc gas_version {} {
  24     global AS
  25     catch "exec $AS -version < /dev/null" tmp
  26     # Should find a way to discard constant parts, keep whatever's
  27     # left, so the version string could be almost anything at all...
  28     regexp "\[^\n\]* (cygnus-|)(\[-0-9.a-zA-Z-\]+)\[\r\n\].*" $tmp version cyg number
  29     if ![info exists number] then {
  30         return "[which $AS] (no version number)\n"
  31     }
  32     clone_output "[which $AS] $number\n"
  33     unset version
  34 }
  35
  36 proc gas_run { prog as_opts redir } {
  37     global AS
  38     global ASFLAGS
  39     global comp_output
  40     global srcdir
  41     global subdir
  42     global host_triplet
  43
  44     verbose -log "Executing $srcdir/lib/run $AS $ASFLAGS $as_opts $srcdir/$subdir/$prog $redir"
  45     catch "exec $srcdir/lib/run $AS $ASFLAGS $as_opts $srcdir/$subdir/$prog $redir" comp_output
  46     set comp_output [prune_warnings $comp_output]
  47     verbose "output was $comp_output"
  48     return [list $comp_output ""]
  49 }
  50
  51 proc all_ones { args } {
  52     foreach x $args { if [expr $x!=1] { return 0 } }
  53     return 1
  54 }
  55
  56 # ${tool}_finish (gas_finish) will be called by runtest.exp.  But
  57 # gas_finish should only be used with gas_start.  We use gas_started
  58 # to tell gas_finish if gas_start has been called so that runtest.exp
  59 # can call gas_finish without closing the wrong fd.
  60 set gas_started 0
  61
  62 proc gas_start { prog as_opts } {
  63     global AS
  64     global ASFLAGS
  65     global srcdir
  66     global subdir
  67     global spawn_id
  68     global gas_started
  69
  70     set gas_started 1
  71
  72     verbose -log "Starting $AS $ASFLAGS $as_opts $prog" 2
  73     catch {
  74         spawn -noecho -nottycopy $srcdir/lib/run $AS $ASFLAGS $as_opts $srcdir/$subdir/$prog
  75     } foo
  76     if ![regexp {^[0-9]+} $foo] then {
  77         perror "Can't run $subdir/$prog: $foo"
  78     }
  79 }
  80
  81 proc gas_finish { } {
  82     global spawn_id
  83     global gas_started
  84
  85     if { $gas_started == 1 } {
  86         catch "close"
  87         catch "wait"
  88         set gas_started 0
  89     }
  90 }
  91
  92 proc want_no_output { testname } {
  93     global comp_output
  94
  95     if ![string match "" $comp_output] then {
  96         send_log "$comp_output\n"
  97         verbose "$comp_output" 3
  98     }
  99     if [string match "" $comp_output] then {
 100         pass "$testname"
 101         return 1
 102     } else {
 103         fail "$testname"
 104         return 0
 105     }
 106 }
 107
 108 proc gas_test_old { file as_opts testname } {
 109     gas_run $file $as_opts ""
 110     return [want_no_output $testname]
 111 }
 112
 113 proc gas_test { file as_opts var_opts testname } {
 114     global comp_output
 115
 116     set i 0
 117     foreach word $var_opts {
 118         set ignore_stdout($i) [string match "*>" $word]
 119         set opt($i) [string trim $word {>}]
 120         incr i
 121     }
 122     set max [expr 1<<$i]
 123     for {set i 0} {[expr $i<$max]} {incr i} {
 124         set maybe_ignore_stdout ""
 125         set extra_opts ""
 126         for {set bit 0} {(1<<$bit)<$max} {incr bit} {
 127             set num [expr 1<<$bit]
 128             if [expr $i&$num] then {
 129                 set extra_opts "$extra_opts $opt($bit)"
 130                 if $ignore_stdout($bit) then {
 131                     set maybe_ignore_stdout ">/dev/null"
 132                 }
 133             }
 134         }
 135         set extra_opts [string trim $extra_opts]
 136         gas_run $file "$as_opts $extra_opts" $maybe_ignore_stdout
 137
 138         # Should I be able to use a conditional expression here?
 139         if [string match "" $extra_opts] then {
 140             want_no_output $testname
 141         } else {
 142             want_no_output "$testname ($extra_opts)"
 143         }
 144     }
 145     if [info exists errorInfo] then {
 146         unset errorInfo
 147     }
 148 }
 149
 150 proc gas_test_ignore_stdout { file as_opts testname } {
 151     global comp_output
 152
 153     gas_run $file $as_opts ">/dev/null"
 154     want_no_output $testname
 155 }
 156
 157 proc gas_test_error { file as_opts testname } {
 158     global comp_output
 159
 160     gas_run $file $as_opts ">/dev/null"
 161     if ![string match "" $comp_output] then {
 162         send_log "$comp_output\n"
 163         verbose "$comp_output" 3
 164     }
 165     if [string match "" $comp_output] then {
 166         fail "$testname"
 167     } else {
 168         pass "$testname"
 169     }
 170 }
 171
 172 proc gas_exit {} {}
 173
 174 proc gas_init { args } {
 175     global target_cpu
 176     global target_cpu_family
 177     global target_family
 178     global target_vendor
 179     global target_os
 180     global stdoptlist
 181
 182     case "$target_cpu" in {
 183         "m68???"                { set target_cpu_family m68k }
 184         "i[3-7]86"              { set target_cpu_family i386 }
 185         default                 { set target_cpu_family $target_cpu }
 186     }
 187
 188     set target_family "$target_cpu_family-$target_vendor-$target_os"
 189     set stdoptlist "-a>"
 190
 191     if ![istarget "*-*-*"] {
 192         perror "Target name [istarget] is not a triple."
 193     }
 194     # Need to return an empty string.
 195     return
 196 }
 197
 198 #
 199 # is_elf_format
 200 #       true if the object format is known to be ELF
 201 #
 202 proc is_elf_format {} {
 203     if { ![istarget *-*-sysv4*] \
 204          && ![istarget *-*-unixware*] \
 205          && ![istarget *-*-elf*] \
 206          && ![istarget *-*-eabi*] \
 207          && ![istarget hppa*64*-*-hpux*] \
 208          && ![istarget *-*-linux*] \
 209          && ![istarget frv-*-uclinux*] \
 210          && ![istarget *-*-irix5*] \
 211          && ![istarget *-*-irix6*] \
 212          && ![istarget *-*-netbsd*] \
 213          && ![istarget *-*-openbsd*] \
 214          && ![istarget *-*-solaris2*] } {
 215         return 0
 216     }
 217
 218     if { [istarget *-*-linux*aout*] \
 219          || [istarget *-*-linux*oldld*] } {
 220         return 0
 221     }
 222
 223     if { ![istarget *-*-netbsdelf*] \
 224          && ([istarget *-*-netbsd*aout*] \
 225              || [istarget *-*-netbsdpe*] \
 226              || [istarget arm*-*-netbsd*] \
 227              || [istarget sparc-*-netbsd*] \
 228              || [istarget i*86-*-netbsd*] \
 229              || [istarget m68*-*-netbsd*] \
 230              || [istarget vax-*-netbsd*] \
 231              || [istarget ns32k-*-netbsd*]) } {
 232         return 0
 233     }
 234
 235     if { [istarget arm-*-openbsd*] \
 236          || [istarget i386-*-openbsd\[0-2\].*] \
 237          || [istarget i386-*-openbsd3.\[0-3\]] \
 238          || [istarget m68*-*-openbsd*] \
 239          || [istarget ns32k-*-openbsd*] \
 240          || [istarget sparc-*-openbsd\[0-2\].*] \
 241          || [istarget sparc-*-openbsd3.\[0-1\]] \
 242          || [istarget vax-*-openbsd*] } {
 243         return 0
 244     }
 245
 246     return 1
 247 }
 248
 249 # run_dump_tests TESTCASES EXTRA_OPTIONS
 250 # Wrapper for run_dump_test, which is suitable for invoking as
 251 #   run_dump_tests [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
 252 # EXTRA_OPTIONS are passed down to run_dump_test.  Honors runtest_file_p.
 253 # Body cribbed from dg-runtest.
 254
 255 proc run_dump_tests { testcases {extra_options {}} } {
 256     global runtests
 257
 258     foreach testcase $testcases {
 259         # If testing specific files and this isn't one of them, skip it.
 260         if ![runtest_file_p $runtests $testcase] {
 261             continue
 262         }
 263         run_dump_test [file rootname [file tail $testcase]] $extra_options
 264     }
 265 }
 266
 267
 268 # run_dump_test FILE (optional:) EXTRA_OPTIONS
 269 #
 270 # Assemble a .s file, then run some utility on it and check the output.
 271 #
 272 # There should be an assembly language file named FILE.s in the test
 273 # suite directory, and a pattern file called FILE.d.  `run_dump_test'
 274 # will assemble FILE.s, run some tool like `objdump', `objcopy', or
 275 # `nm' on the .o file to produce textual output, and then analyze that
 276 # with regexps.  The FILE.d file specifies what program to run, and
 277 # what to expect in its output.
 278 #
 279 # The FILE.d file begins with zero or more option lines, which specify
 280 # flags to pass to the assembler, the program to run to dump the
 281 # assembler's output, and the options it wants.  The option lines have
 282 # the syntax:
 283 #
 284 #         # OPTION: VALUE
 285 #
 286 # OPTION is the name of some option, like "name" or "objdump", and
 287 # VALUE is OPTION's value.  The valid options are described below.
 288 # Whitespace is ignored everywhere, except within VALUE.  The option
 289 # list ends with the first line that doesn't match the above syntax.
 290 # However, a line within the options that begins with a #, but doesn't
 291 # have a recognizable option name followed by a colon, is considered a
 292 # comment and entirely ignored.
 293 #
 294 # The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
 295 # two-element lists.  The first element of each is an option name, and
 296 # the second additional arguments to be added on to the end of the
 297 # option list as given in FILE.d.  (If omitted, no additional options
 298 # are added.)
 299 #
 300 # The interesting options are:
 301 #
 302 #   name: TEST-NAME
 303 #       The name of this test, passed to DejaGNU's `pass' and `fail'
 304 #       commands.  If omitted, this defaults to FILE, the root of the
 305 #       .s and .d files' names.
 306 #
 307 #   as: FLAGS
 308 #       When assembling FILE.s, pass FLAGS to the assembler.
 309 #
 310 #   PROG: PROGRAM-NAME
 311 #       The name of the program to run to analyze the .o file produced
 312 #       by the assembler.  This can be omitted; run_dump_test will guess
 313 #       which program to run by seeing which of the flags options below
 314 #       is present.
 315 #
 316 #   objdump: FLAGS
 317 #   nm: FLAGS
 318 #   objcopy: FLAGS
 319 #       Use the specified program to analyze the .o file, and pass it
 320 #       FLAGS, in addition to the .o file name.  Note that they are run
 321 #       with LC_ALL=C in the environment to give consistent sorting
 322 #       of symbols.
 323 #
 324 #   source: SOURCE
 325 #       Assemble the file SOURCE.s.  If omitted, this defaults to FILE.s.
 326 #       This is useful if several .d files want to share a .s file.
 327 #
 328 #   target: GLOBS...
 329 #       Run this test only on a specified list of targets.  More precisely,
 330 #       each glob in the space-separated list is passed to "istarget"; if
 331 #       it evaluates true for any of them, the test will be run, otherwise
 332 #       it will be marked unsupported.
 333 #
 334 #   not-target: GLOBS...
 335 #       Do not run this test on a specified list of targets.  Again,
 336 #       the each glob in the space-separated list is passed to
 337 #       "istarget", and the test is run if it evaluates *false* for
 338 #       *all* of them.  Otherwise it will be marked unsupported.
 339 #
 340 #   skip: GLOBS...
 341 #   not-skip: GLOBS...
 342 #       These are exactly the same as "not-target" and "target",
 343 #       respectively, except that they do nothing at all if the check
 344 #       fails.  They should only be used in groups, to construct a single
 345 #       test which is run on all targets but with variant options or
 346 #       expected output on some targets.  (For example, see
 347 #       gas/arm/inst.d and gas/arm/wince_inst.d.)
 348 #
 349 #   error: REGEX
 350 #       An error with message matching REGEX must be emitted for the test
 351 #       to pass.  The PROG, objdump, nm and objcopy options have no
 352 #       meaning and need not supplied if this is present.
 353 #
 354 #   warning: REGEX
 355 #       Expect a gas warning matching REGEX.  It is an error to issue
 356 #       both "error" and "warning".
 357 #
 358 #   stderr: FILE
 359 #       FILE contains regexp lines to be matched against the diagnostic
 360 #       output of the assembler.  This does not preclude the use of
 361 #       PROG, nm, objdump, or objcopy.
 362 #
 363 #   error-output: FILE
 364 #       Means the same as 'stderr', but also indicates that the assembler
 365 #       is expected to exit unsuccessfully (therefore PROG, objdump, nm,
 366 #       and objcopy have no meaning and should not be supplied).
 367 #
 368 # Each option may occur at most once.
 369 #
 370 # After the option lines come regexp lines.  `run_dump_test' calls
 371 # `regexp_diff' to compare the output of the dumping tool against the
 372 # regexps in FILE.d.  `regexp_diff' is defined later in this file; see
 373 # further comments there.
 374
 375 proc run_dump_test { name {extra_options {}} } {
 376     global subdir srcdir
 377     global OBJDUMP NM AS OBJCOPY READELF
 378     global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS
 379     global host_triplet
 380     global env
 381
 382     if [string match "*/*" $name] {
 383         set file $name
 384         set name [file tail $name]
 385     } else {
 386         set file "$srcdir/$subdir/$name"
 387     }
 388     set opt_array [slurp_options "${file}.d"]
 389     if { $opt_array == -1 } {
 390         perror "error reading options from $file.d"
 391         unresolved $subdir/$name
 392         return
 393     }
 394     set opts(as) {}
 395     set opts(objdump) {}
 396     set opts(nm) {}
 397     set opts(objcopy) {}
 398     set opts(readelf) {}
 399     set opts(name) {}
 400     set opts(PROG) {}
 401     set opts(source) {}
 402     set opts(stderr) {}
 403     set opts(error) {}
 404     set opts(error-output) {}
 405     set opts(warning) {}
 406     set opts(target) {}
 407     set opts(not-target) {}
 408     set opts(skip) {}
 409     set opts(not-skip) {}
 410
 411     foreach i $opt_array {
 412         set opt_name [lindex $i 0]
 413         set opt_val [lindex $i 1]
 414         if ![info exists opts($opt_name)] {
 415             perror "unknown option $opt_name in file $file.d"
 416             unresolved $subdir/$name
 417             return
 418         }
 419         if [string length $opts($opt_name)] {
 420             perror "option $opt_name multiply set in $file.d"
 421             unresolved $subdir/$name
 422             return
 423         }
 424         set opts($opt_name) $opt_val
 425     }
 426
 427     foreach i $extra_options {
 428         set opt_name [lindex $i 0]
 429         set opt_val [lindex $i 1]
 430         if ![info exists opts($opt_name)] {
 431             perror "unknown option $opt_name given in extra_opts"
 432             unresolved $subdir/$name
 433             return
 434         }
 435         # add extra option to end of existing option, adding space
 436         # if necessary.
 437         if [string length $opts($opt_name)] {
 438             append opts($opt_name) " "
 439         }
 440         append opts($opt_name) $opt_val
 441     }
 442
 443     if { $opts(name) == "" } {
 444         set testname "$subdir/$name"
 445     } else {
 446         set testname $opts(name)
 447     }
 448     verbose "Testing $testname"
 449
 450     if { (($opts(warning) != "") && ($opts(error) != "")) \
 451          || (($opts(warning) != "") && ($opts(stderr) != "")) \
 452          || (($opts(error-output) != "") && ($opts(stderr) != "")) \
 453          || (($opts(error-output) != "") && ($opts(error) != "")) \
 454          || (($opts(error-output) != "") && ($opts(warning) != "")) } {
 455         perror "$testname: bad mix of stderr, error-output, error, and warning test-directives"
 456         unresolved $testname
 457         return
 458     }
 459     if { $opts(error-output) != "" } then {
 460         set opts(stderr) $opts(error-output)
 461     }
 462
 463     set program ""
 464     # It's meaningless to require an output-testing method when we
 465     # expect an error.
 466     if { $opts(error) == "" && $opts(error-output) == "" } {
 467         if {$opts(PROG) != ""} {
 468             switch -- $opts(PROG) {
 469                 objdump { set program objdump }
 470                 nm      { set program nm }
 471                 objcopy { set program objcopy }
 472                 readelf { set program readelf }
 473                 default {
 474                     perror "unrecognized program option $opts(PROG) in $file.d"
 475                     unresolved $testname
 476                     return }
 477             }
 478         } else {
 479             # Guess which program to run, by seeing which option was specified.
 480             foreach p {objdump objcopy nm readelf} {
 481                 if {$opts($p) != ""} {
 482                     if {$program != ""} {
 483                         perror "ambiguous dump program in $file.d"
 484                         unresolved $testname
 485                         return
 486                     } else {
 487                         set program $p
 488                     }
 489                 }
 490             }
 491         }
 492         if { $program == "" && $opts(warning) == "" } {
 493             perror "dump program unspecified in $file.d"
 494             unresolved $testname
 495             return
 496         }
 497     }
 498
 499     # Handle skipping the test on specified targets.
 500     # You can have both skip/not-skip and target/not-target, but you can't
 501     # have both skip and not-skip, or target and not-target, in the same file.
 502     if { $opts(skip) != "" } then {
 503         if { $opts(not-skip) != "" } then {
 504             perror "$testname: mixing skip and not-skip directives is invalid"
 505             unresolved $testname
 506             return
 507         }
 508         foreach glob $opts(skip) {
 509             if {[istarget $glob]} { return }
 510         }
 511     }
 512     if { $opts(not-skip) != "" } then {
 513         set skip 1
 514         foreach glob $opts(not-skip) {
 515             if {[istarget $glob]} {
 516                 set skip 0
 517                 break
 518             }
 519         }
 520         if {$skip} { return }
 521     }
 522     if { $opts(target) != "" } then {
 523         if { $opts(not-target) != "" } then {
 524             perror "$testname: mixing target and not-target directives is invalid"
 525             unresolved $testname
 526             return
 527         }
 528         set skip 1
 529         foreach glob $opts(target) {
 530             if {[istarget $glob]} {
 531                 set skip 0
 532                 break
 533             }
 534         }
 535         if {$skip} {
 536             unsupported $testname
 537             return
 538         }
 539     }
 540     if { $opts(not-target) != "" } then {
 541         foreach glob $opts(not-target) {
 542             if {[istarget $glob]} {
 543                 unsupported $testname
 544                 return
 545             }
 546         }
 547     }
 548
 549
 550     if { $opts(source) == "" } {
 551         set sourcefile ${file}.s
 552     } else {
 553         set sourcefile $srcdir/$subdir/$opts(source)
 554     }
 555
 556     set cmd "$srcdir/lib/run $AS $ASFLAGS $opts(as) -o dump.o $sourcefile"
 557     send_log "$cmd\n"
 558     set cmdret [catch "exec $cmd" comp_output]
 559     set comp_output [prune_warnings $comp_output]
 560
 561     set expmsg $opts(error)
 562     if { $opts(warning) != "" } {
 563         set expmsg $opts(warning)
 564     }
 565     if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then {
 566         # If the executed program writes to stderr and stderr is not
 567         # redirected, exec *always* returns failure, regardless of the
 568         # program exit code.  Thankfully, we can retrieve the true
 569         # return status from a special variable.  Redirection would
 570         # cause a tcl-specific message to be appended, and we'd rather
 571         # not deal with that if we can help it.
 572         global errorCode
 573         if { $cmdret != 0 && [lindex $errorCode 0] == "NONE" } {
 574             set cmdret 0
 575         }
 576
 577         set exitstat "succeeded"
 578         if { $cmdret != 0 } { set exitstat "failed" }
 579
 580         send_log "$comp_output\n"
 581         verbose "$comp_output" 3
 582         if { $opts(stderr) == "" }  then {
 583             if { [regexp $expmsg $comp_output] \
 584                     && (($cmdret == 0) == ($opts(warning) != "")) } {
 585                 # We have the expected output from gas.
 586                 # Return if there's nothing more to do.
 587                 if { $opts(error) != "" || $program == "" } {
 588                     pass $testname
 589                     return
 590                 }
 591             } else {
 592                 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
 593
 594                 fail $testname
 595                 return
 596             }
 597         } else {
 598             catch {write_file dump.stderr "$comp_output"} write_output
 599             if ![string match "" $write_output] then {
 600                 send_log "error writing dump.stderr: $write_output\n"
 601                 verbose "error writing dump.stderr: $write_output" 3
 602                 send_log "$comp_output\n"
 603                 verbose "$comp_output" 3
 604                 fail $testname
 605                 return
 606             }
 607             set stderrfile $srcdir/$subdir/$opts(stderr)
 608             verbose "wrote pruned stderr to dump.stderr" 3
 609             if { [regexp_diff "dump.stderr" "$stderrfile"] } then {
 610                 if { $opts(error) != "" } {
 611                     verbose -log "$exitstat with: <$comp_output>, expected: <$opts(error)>"
 612                     if [regexp $opts(error) $comp_output] {
 613                         pass $testname
 614                         return
 615                     }
 616                 }
 617                 fail $testname
 618                 verbose "pruned stderr is [file_contents "dump.stderr"]" 2
 619                 return
 620             } elseif { $opts(error-output) != "" } then {
 621                 pass $testname
 622                 return
 623             }
 624         }
 625     }
 626
 627     if { $program == "" } {
 628         return
 629     }
 630     set progopts1 $opts($program)
 631     eval set progopts \$[string toupper $program]FLAGS
 632     eval set binary \$[string toupper $program]
 633
 634     if { [which $binary] == 0 } {
 635         untested $testname
 636         return
 637     }
 638
 639     if { $progopts1 == "" } { set $progopts1 "-r" }
 640     verbose "running $binary $progopts $progopts1" 3
 641
 642     # Objcopy, unlike the other two, won't send its output to stdout,
 643     # so we have to run it specially.
 644     set cmd "$binary $progopts $progopts1 dump.o > dump.out"
 645     if { $program == "objcopy" } {
 646         set cmd "$binary $progopts $progopts1 dump.o dump.out"
 647     }
 648
 649     # Ensure consistent sorting of symbols
 650     if {[info exists env(LC_ALL)]} {
 651         set old_lc_all $env(LC_ALL)
 652     }
 653     set env(LC_ALL) "C"
 654     send_log "$cmd\n"
 655     catch "exec $cmd" comp_output
 656     if {[info exists old_lc_all]} {
 657         set env(LC_ALL) $old_lc_all
 658     } else {
 659         unset env(LC_ALL)
 660     }
 661     set comp_output [prune_warnings $comp_output]
 662     if ![string match "" $comp_output] then {
 663         send_log "$comp_output\n"
 664         fail $testname
 665         return
 666     }
 667
 668     verbose_eval {[file_contents "dump.out"]} 3
 669     if { [regexp_diff "dump.out" "${file}.d"] } then {
 670         fail $testname
 671         verbose "output is [file_contents "dump.out"]" 2
 672         return
 673     }
 674
 675     pass $testname
 676 }
 677
 678 proc slurp_options { file } {
 679     if [catch { set f [open $file r] } x] {
 680         #perror "couldn't open `$file': $x"
 681         perror "$x"
 682         return -1
 683     }
 684     set opt_array {}
 685     # whitespace expression
 686     set ws  {[  ]*}
 687     set nws {[^         ]*}
 688     # whitespace is ignored anywhere except within the options list;
 689     # option names are alphabetic plus dash
 690     set pat "^#${ws}(\[a-zA-Z-\]*)$ws:${ws}(.*)$ws\$"
 691     while { [gets $f line] != -1 } {
 692         set line [string trim $line]
 693         # Whitespace here is space-tab.
 694         if [regexp $pat $line xxx opt_name opt_val] {
 695             # match!
 696             lappend opt_array [list $opt_name $opt_val]
 697         } elseif {![regexp "^#" $line ]} {
 698             break
 699         }
 700     }
 701     close $f
 702     return $opt_array
 703 }
 704
 705 proc objdump { opts } {
 706     global OBJDUMP
 707     global comp_output
 708     global host_triplet
 709
 710     catch "exec $OBJDUMP $opts" comp_output
 711     set comp_output [prune_warnings $comp_output]
 712     verbose "objdump output=$comp_output\n" 3
 713 }
 714
 715 proc objdump_start_no_subdir { prog opts } {
 716     global OBJDUMP
 717     global srcdir
 718     global spawn_id
 719
 720     verbose "Starting $OBJDUMP $opts $prog" 2
 721     catch {
 722         spawn -noecho -nottyinit $srcdir/lib/run $OBJDUMP $opts $prog
 723     } foo
 724     if ![regexp {^[0-9]+} $foo] then {
 725         perror "Can't run $prog: $foo"
 726     }
 727 }
 728
 729 proc objdump_finish { } {
 730     global spawn_id
 731
 732     catch "close"
 733     catch "wait"
 734 }
 735
 736 # Default timeout is 10 seconds, loses on a slow machine.  But some
 737 # configurations of dejagnu may override it.
 738 if {$timeout<120} then { set timeout 120 }
 739
 740 expect_after -i {
 741     timeout                     { perror "timeout" }
 742     "virtual memory exhausted"  { perror "virtual memory exhausted" }
 743     buffer_full                 { perror "buffer full" }
 744     eof                         { perror "eof" }
 745 }
 746
 747 # regexp_diff, based on simple_diff taken from ld test suite
 748 #       compares two files line-by-line
 749 #       file1 contains strings, file2 contains regexps and #-comments
 750 #       blank lines are ignored in either file
 751 #       returns non-zero if differences exist
 752 #
 753 proc regexp_diff { file_1 file_2 } {
 754
 755     set eof -1
 756     set end_1 0
 757     set end_2 0
 758     set differences 0
 759     set diff_pass 0
 760
 761     if [file exists $file_1] then {
 762         set file_a [open $file_1 r]
 763     } else {
 764         perror "$file_1 doesn't exist"
 765         return 1
 766     }
 767
 768     if [file exists $file_2] then {
 769         set file_b [open $file_2 r]
 770     } else {
 771         perror "$file_2 doesn't exist"
 772         close $file_a
 773         return 1
 774     }
 775
 776     verbose " Regexp-diff'ing: $file_1 $file_2" 2
 777
 778     while { 1 } {
 779         set line_a ""
 780         set line_b ""
 781         while { [string length $line_a] == 0 } {
 782             if { [gets $file_a line_a] == $eof } {
 783                 set end_1 1
 784                 break
 785             }
 786         }
 787         while { [string length $line_b] == 0 || [string match "#*" $line_b] } {
 788             if [ string match "#pass" $line_b ] {
 789                 set end_2 1
 790                 set diff_pass 1
 791                 break
 792             } elseif [ string match "#..." $line_b ] {
 793                 if { [gets $file_b line_b] == $eof } {
 794                     set end_2 1
 795                     set diff_pass 1
 796                     break
 797                 }
 798                 verbose "looking for \"^$line_b$\"" 3
 799                 while { ![regexp "^$line_b$" "$line_a"] } {
 800                     verbose "skipping    \"$line_a\"" 3
 801                     if { [gets $file_a line_a] == $eof } {
 802                         set end_1 1
 803                         break
 804                     }
 805                 }
 806                 break
 807             }
 808             if { [gets $file_b line_b] == $eof } {
 809                 set end_2 1
 810                 break
 811             }
 812         }
 813
 814         if { $diff_pass } {
 815             break
 816         } elseif { $end_1 && $end_2 } {
 817             break
 818         } elseif { $end_1 } {
 819             send_log "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1\n"
 820             verbose "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1" 3
 821             set differences 1
 822             break
 823         } elseif { $end_2 } {
 824             send_log "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n"
 825             verbose "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" 3
 826             set differences 1
 827             break
 828         } else {
 829             verbose "regexp \"^$line_b$\"\nline   \"$line_a\"" 3
 830             if ![regexp "^$line_b$" "$line_a"] {
 831                 send_log "regexp_diff match failure\n"
 832                 send_log "regexp \"^$line_b$\"\nline   \"$line_a\"\n"
 833                 verbose "regexp_diff match failure\n" 3
 834                 set differences 1
 835             }
 836         }
 837     }
 838
 839     if { $differences == 0 && !$diff_pass && [eof $file_a] != [eof $file_b] } {
 840         send_log "$file_1 and $file_2 are different lengths\n"
 841         verbose "$file_1 and $file_2 are different lengths" 3
 842         set differences 1
 843     }
 844
 845     close $file_a
 846     close $file_b
 847
 848     return $differences
 849 }
 850
 851 proc file_contents { filename } {
 852     set file [open $filename r]
 853     set contents [read $file]
 854     close $file
 855     return $contents
 856 }
 857
 858 proc write_file { filename contents } {
 859     set file [open $filename w]
 860     puts $file "$contents"
 861     close $file
 862 }
 863
 864 proc verbose_eval { expr { level 1 } } {
 865     global verbose
 866     if $verbose>$level then { eval verbose "$expr" $level }
 867 }
 868
 869 # This definition is taken from an unreleased version of DejaGnu.  Once
 870 # that version gets released, and has been out in the world for a few
 871 # months at least, it may be safe to delete this copy.
 872 if ![string length [info proc prune_warnings]] {
 873     #
 874     # prune_warnings -- delete various system verbosities from TEXT.
 875     #
 876     # An example is:
 877     # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9
 878     #
 879     # Sites with particular verbose os's may wish to override this in site.exp.
 880     #
 881     proc prune_warnings { text } {
 882         # This is from sun4's.  Do it for all machines for now.
 883         # The "\\1" is to try to preserve a "\n" but only if necessary.
 884         regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text
 885
 886         # It might be tempting to get carried away and delete blank lines, etc.
 887         # Just delete *exactly* what we're ask to, and that's it.
 888         return $text
 889     }
 890 }