1 # Support routines for LD testsuite.
2 # Copyright (C) 1994-2014 Free Software Foundation, Inc.
4 # This file is part of the GNU Binutils.
6 # This file is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 proc load_common_lib { name } {
23 load_file $srcdir/../../binutils/testsuite/lib/$name
26 load_common_lib binutils-common.exp
28 # Returns 1 if the gcc for the target is at least version MAJOR.MINOR
29 # Returns 0 otherwise.
31 proc at_least_gcc_version { major minor } {
33 if {![info exists CC]} {
39 set state [remote_exec host $CC --version]
40 set tmp "[lindex $state 1]\n"
41 # Look for (eg) 4.6.1 in the version output.
42 set ver_re "\[^\\.0-9\]+(\[1-9\]\[0-9\]*)\\.(\[0-9\]+)(?:\\.\[0-9\]+)?"
43 regexp $ver_re $tmp fred maj min
44 verbose "gcc version: $tmp"
45 if { ![info exists maj] || ![info exists min] } then {
46 perror "can't decipher gcc version number, fix the framework!"
49 verbose "major gcc version is $maj, want at least $major"
50 if { $maj == $major } then {
51 verbose "minor gcc version is $min, want at least $minor"
52 return [expr $min >= $minor]
54 return [expr $maj > $major]
58 # Extract and print the version number of ld.
60 proc default_ld_version { ld } {
63 if { ![is_remote host] && [which $ld] == 0 } then {
64 perror "$ld does not exist"
68 remote_exec host "$ld --version" "" "/dev/null" "ld.version"
69 remote_upload host "ld.version"
70 set tmp [prune_warnings [file_contents "ld.version"]]
71 remote_file build delete "ld.version"
72 remote_file host delete "ld.version"
74 regexp "\[^\n\]* (cygnus-|)(\[-0-9.a-zA-Z-\]+)\[\r\n\].*" $tmp version cyg number
75 if [info exists number] then {
76 clone_output "$ld $number\n"
80 proc run_host_cmd { prog command } {
85 if { ![is_remote host] && [which "$prog"] == 0 } then {
86 perror "$prog does not exist"
90 # If we are compiling with gcc, we want to add gcc_B_opt and
91 # ld_L_opt to flags. However, if $prog already has -B options,
92 # which might be the case when running gcc out of a build
93 # directory, we want our -B options to come first.
95 set gccparm [string first " " $gccexe]
97 if { $gccparm > 0 } then {
98 set gccflags [string range $gccexe $gccparm end]
99 set gccexe [string range $gccexe 0 $gccparm]
102 set gccexe [string replace $gccexe 0 [string last "/" $gccexe] ""]
103 if {[string match "*cc*" $gccexe] || [string match "*++*" $gccexe]} then {
104 set gccflags "$gcc_B_opt $gccflags $ld_L_opt"
107 verbose -log "$prog $gccflags $command"
108 set status [remote_exec host [concat sh -c [list "$prog $gccflags $command 2>&1"]] "" "/dev/null" "ld.tmp"]
109 remote_upload host "ld.tmp"
110 set link_output [file_contents "ld.tmp"]
111 regsub "\n$" $link_output "" link_output
112 if { [lindex $status 0] != 0 && [string match "" $link_output] } then {
113 append link_output "child process exited abnormally"
115 remote_file build delete ld.tmp
116 remote_file host delete ld.tmp
118 if [string match "" $link_output] then {
122 verbose -log "$link_output"
123 return "$link_output"
126 proc run_host_cmd_yesno { prog command } {
129 set exec_output [prune_warnings [run_host_cmd "$prog" "$command"]]
130 if [string match "" $exec_output] then {
136 # Link an object using relocation.
138 proc default_ld_relocate { ld target objects } {
141 remote_file host delete $target
142 return [run_host_cmd_yesno "$ld" "$HOSTING_EMU -o $target -r $objects"]
145 # Check to see if ld is being invoked with a non-endian output format
147 proc is_endian_output_format { object_flags } {
149 if {[string match "*-oformat binary*" $object_flags] || \
150 [string match "*-oformat ieee*" $object_flags] || \
151 [string match "*-oformat ihex*" $object_flags] || \
152 [string match "*-oformat netbsd-core*" $object_flags] || \
153 [string match "*-oformat srec*" $object_flags] || \
154 [string match "*-oformat tekhex*" $object_flags] || \
155 [string match "*-oformat trad-core*" $object_flags] } then {
162 # Look for big-endian or little-endian switches in the multlib
163 # options and translate these into a -EB or -EL switch. Note
164 # we cannot rely upon proc process_multilib_options to do this
165 # for us because for some targets the compiler does not support
166 # -EB/-EL but it does support -mbig-endian/-mlittle-endian, and
167 # the site.exp file will include the switch "-mbig-endian"
168 # (rather than "big-endian") which is not detected by proc
169 # process_multilib_options.
171 proc big_or_little_endian {} {
173 if [board_info [target_info name] exists multilib_flags] {
174 set tmp_flags " [board_info [target_info name] multilib_flags]"
176 foreach x $tmp_flags {
178 {*big*endian eb EB -eb -EB -mb -meb} {
182 {*little*endian el EL -el -EL -ml -mel} {
194 # Link a program using ld.
196 proc default_ld_link { ld target objects } {
207 if { [ string match "* -pie *" $objects ] } {
208 set objs "$HOSTING_SCRT0 $objects"
209 set libs "$LIBS $HOSTING_SLIBS"
211 set objs "$HOSTING_CRT0 $objects"
212 set libs "$LIBS $HOSTING_LIBS"
215 if [is_endian_output_format $objects] then {
216 set flags [big_or_little_endian]
221 remote_file host delete $target
223 return [run_host_cmd_yesno "$ld" "$HOSTING_EMU $flags -o $target $objs $libs"]
226 # Link a program using ld, without including any libraries.
228 proc default_ld_simple_link { ld target objects } {
233 if [is_endian_output_format $objects] then {
234 set flags [big_or_little_endian]
237 remote_file host delete $target
238 set exec_output [run_host_cmd "$ld" "$flags -o $target $objects"]
239 set exec_output [prune_warnings $exec_output]
241 # We don't care if we get a warning about a non-existent start
242 # symbol, since the default linker script might use ENTRY.
243 regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
245 return [string match "" $exec_output]
248 # Compile an object using cc.
250 proc default_ld_compile { cc source object } {
259 if {[llength $cc_prog] > 1} then {
260 set cc_prog [lindex $cc_prog 0]
262 if {![is_remote host] && [which $cc_prog] == 0} then {
263 perror "$cc_prog does not exist"
267 remote_file build delete "$object"
268 remote_file host delete "$object"
270 set flags "$gcc_B_opt -I$srcdir/$subdir"
272 # If we are compiling with gcc, we want to add gcc_B_opt to flags.
273 # However, if $prog already has -B options, which might be the
274 # case when running gcc out of a build directory, we want our -B
275 # options to come first.
277 set ccparm [string first " " $cc]
279 if { $ccparm > 0 } then {
280 set ccflags [string range $cc $ccparm end]
281 set ccexe [string range $cc 0 $ccparm]
285 set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""]
286 if {[string match "*++*" $ccexe]} {
287 append flags " $CXXFLAGS"
289 append flags " $CFLAGS"
292 if [board_info [target_info name] exists cflags] {
293 append flags " [board_info [target_info name] cflags]"
296 if [board_info [target_info name] exists multilib_flags] {
297 append flags " [board_info [target_info name] multilib_flags]"
300 set cmd "$cc $flags $ccflags -c $source -o $object"
303 set status [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
304 remote_upload host "ld.tmp"
305 set exec_output [file_contents "ld.tmp"]
306 remote_file build delete "ld.tmp"
307 remote_file host delete "ld.tmp"
308 set exec_output [prune_warnings $exec_output]
309 if [string match "" $exec_output] then {
310 if {![file exists $object]} then {
311 regexp ".*/(\[^/\]*)$" $source all dobj
312 regsub "\\.c" $dobj ".o" realobj
313 verbose "looking for $realobj"
314 if {[remote_file host exists $realobj]} then {
315 verbose -log "mv $realobj $object"
316 remote_upload "$realobj" "$object"
318 perror "$object not found after compilation"
324 verbose -log "$exec_output"
325 perror "$source: compilation failed"
332 proc default_ld_assemble { as in_flags source object } {
338 if ![info exists ASFLAGS] { set ASFLAGS "" }
340 set flags "[big_or_little_endian] -I$srcdir/$subdir"
341 set exec_output [run_host_cmd "$as" "$flags $in_flags $ASFLAGS -o $object $source"]
342 set exec_output [prune_warnings $exec_output]
343 if [string match "" $exec_output] then {
346 perror "$source: assembly failed"
351 # Run nm on a file, putting the result in the array nm_output.
353 proc default_ld_nm { nm nmflags object } {
358 if {[info exists nm_output]} {
362 if ![info exists NMFLAGS] { set NMFLAGS "" }
364 # Ensure consistent sorting of symbols
365 if {[info exists env(LC_ALL)]} {
366 set old_lc_all $env(LC_ALL)
370 verbose -log "$nm $NMFLAGS $nmflags $object >tmpdir/nm.out"
372 set status [remote_exec host [concat sh -c [list "$nm $NMFLAGS $nmflags $object 2>ld.stderr"]] "" "/dev/null" "tmpdir/nm.out"]
373 if {[info exists old_lc_all]} {
374 set env(LC_ALL) $old_lc_all
378 remote_upload host "ld.stderr"
379 remote_upload host "tmpdir/nm.out" "tmpdir/nm.out"
380 set exec_output [prune_warnings [file_contents "ld.stderr"]]
381 remote_file host delete "ld.stderr"
382 remote_file build delete "ld.stderr"
383 if [string match "" $exec_output] then {
384 set file [open tmpdir/nm.out r]
385 while { [gets $file line] != -1 } {
387 if [regexp "^(\[0-9a-fA-F\]+) \[a-zA-Z0-9\] \\.*(.+)$" $line whole value name] {
388 set name [string trimleft $name "_"]
389 verbose "Setting nm_output($name) to 0x$value" 2
390 set nm_output($name) 0x$value
396 verbose -log "$exec_output"
397 perror "$object: nm failed"
402 # Define various symbols needed when not linking against all
404 proc ld_simple_link_defsyms {} {
406 set flags "--defsym __stack_chk_fail=0"
408 # ARM targets call __gccmain
409 if {[istarget arm*-*-*]} {
410 append flags " --defsym __gccmain=0"
413 # Windows targets need __main, some prefixed with underscore.
414 if {[istarget *-*-cygwin* ] || [istarget *-*-mingw*]} {
415 append flags " --defsym __main=0 --defsym ___main=0"
418 # PowerPC EABI code calls __eabi.
419 if {[istarget powerpc*-*-eabi*] || [istarget powerpc*-*-rtems*]} {
420 append flags " --defsym __eabi=0"
423 # mn10200 code calls __truncsipsi2_d0_d2.
424 if {[istarget mn10200*-*-*]} then {
425 append flags " --defsym __truncsipsi2_d0_d2=0"
428 # m6811/m6812 code has references to soft registers.
429 if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
430 append flags " --defsym _.frame=0 --defsym _.d1=0 --defsym _.d2=0"
431 append flags " --defsym _.d3=0 --defsym _.d4=0"
432 append flags " --defsym _.tmp=0 --defsym _.xy=0 --defsym _.z=0"
435 # Some OpenBSD targets have ProPolice and reference __guard and
436 # __stack_smash_handler.
437 if [istarget *-*-openbsd*] {
438 append flags " --defsym __guard=0"
439 append flags " --defsym __stack_smash_handler=0"
445 # run_dump_test FILE (optional:) EXTRA_OPTIONS
446 # Copied from gas testsuite, tweaked and further extended.
448 # Assemble a .s file, then run some utility on it and check the output.
450 # There should be an assembly language file named FILE.s in the test
451 # suite directory, and a pattern file called FILE.d. `run_dump_test'
452 # will assemble FILE.s, run some tool like `objdump', `objcopy', or
453 # `nm' on the .o file to produce textual output, and then analyze that
454 # with regexps. The FILE.d file specifies what program to run, and
455 # what to expect in its output.
457 # The FILE.d file begins with zero or more option lines, which specify
458 # flags to pass to the assembler, the program to run to dump the
459 # assembler's output, and the options it wants. The option lines have
464 # OPTION is the name of some option, like "name" or "objdump", and
465 # VALUE is OPTION's value. The valid options are described below.
466 # Whitespace is ignored everywhere, except within VALUE. The option
467 # list ends with the first line that doesn't match the above syntax
468 # (hmm, not great for error detection).
470 # The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
471 # two-element lists. The first element of each is an option name, and
472 # the second additional arguments to be added on to the end of the
473 # option list as given in FILE.d. (If omitted, no additional options
476 # The interesting options are:
479 # The name of this test, passed to DejaGNU's `pass' and `fail'
480 # commands. If omitted, this defaults to FILE, the root of the
481 # .s and .d files' names.
484 # When assembling, pass FLAGS to the assembler.
485 # If assembling several files, you can pass different assembler
486 # options in the "source" directives. See below.
489 # Link assembled files using FLAGS, in the order of the "source"
490 # directives, when using multiple files.
492 # ld_after_inputfiles: FLAGS
493 # Similar to "ld", but put after all input files.
495 # objcopy_objects: FLAGS
496 # Run objcopy with the specified flags after assembling any source
497 # that has the special marker RUN_OBJCOPY in the source specific
500 # objcopy_linked_file: FLAGS
501 # Run objcopy on the linked file with the specified flags.
502 # This lets you transform the linked file using objcopy, before the
503 # result is analyzed by an analyzer program specified below (which
504 # may in turn *also* be objcopy).
507 # The name of the program to run to analyze the .o file produced
508 # by the assembler or the linker output. This can be omitted;
509 # run_dump_test will guess which program to run by seeing which of
510 # the flags options below is present.
515 # Use the specified program to analyze the assembler or linker
516 # output file, and pass it FLAGS, in addition to the output name.
517 # Note that they are run with LC_ALL=C in the environment to give
518 # consistent sorting of symbols.
520 # source: SOURCE [FLAGS]
521 # Assemble the file SOURCE.s using the flags in the "as" directive
522 # and the (optional) FLAGS. If omitted, the source defaults to
524 # This is useful if several .d files want to share a .s file.
525 # More than one "source" directive can be given, which is useful
526 # when testing linking.
529 # Match against DUMP.d. If omitted, this defaults to FILE.d. This
530 # is useful if several .d files differ by options only. Options are
531 # always read from FILE.d.
534 # The test is expected to fail on TARGET. This may occur more than
538 # Only run the test for TARGET. This may occur more than once; the
539 # target being tested must match at least one. You may provide target
540 # name "cfi" for any target supporting the CFI statements.
543 # Do not run the test for TARGET. This may occur more than once;
544 # the target being tested must not match any of them.
547 # An error with message matching REGEX must be emitted for the test
548 # to pass. The PROG, objdump, nm and objcopy options have no
549 # meaning and need not supplied if this is present. Multiple "error"
550 # directives append to the expected linker error message.
553 # Expect a linker warning matching REGEX. It is an error to issue
554 # both "error" and "warning". Multiple "warning" directives
555 # append to the expected linker warning message.
557 # Each option may occur at most once unless otherwise mentioned.
559 # After the option lines come regexp lines. `run_dump_test' calls
560 # `regexp_diff' to compare the output of the dumping tool against the
561 # regexps in FILE.d. `regexp_diff' is defined in binutils-common.exp;
562 # see further comments there.
564 proc run_dump_test { name {extra_options {}} } {
566 global OBJDUMP NM AS OBJCOPY READELF LD
567 global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
568 global host_triplet runtests
571 if [string match "*/*" $name] {
573 set name [file tail $name]
575 set file "$srcdir/$subdir/$name"
578 if ![runtest_file_p $runtests $name] then {
582 set opt_array [slurp_options "${file}.d"]
583 if { $opt_array == -1 } {
584 perror "error reading options from $file.d"
585 unresolved $subdir/$name
588 set dumpfile tmpdir/dump.out
593 set opts(ld_after_inputfiles) {}
596 set opts(notarget) {}
607 set opts(objcopy_linked_file) {}
608 set opts(objcopy_objects) {}
610 foreach i $opt_array {
611 set opt_name [lindex $i 0]
612 set opt_val [lindex $i 1]
613 if ![info exists opts($opt_name)] {
614 perror "unknown option $opt_name in file $file.d"
615 unresolved $subdir/$name
619 switch -- $opt_name {
626 # Move any source-specific as-flags to a separate list to
627 # simplify processing.
628 if { [llength $opt_val] > 1 } {
629 lappend asflags [lrange $opt_val 1 end]
630 set opt_val [lindex $opt_val 0]
636 if [string length $opts($opt_name)] {
637 perror "option $opt_name multiply set in $file.d"
638 unresolved $subdir/$name
642 # A single "# ld:" with no options should do the right thing.
643 if { $opt_name == "ld" } {
646 # Likewise objcopy_linked_file.
647 if { $opt_name == "objcopy_linked_file" } {
652 if { $opt_name == "as" || $opt_name == "ld" } {
653 set opt_val [subst $opt_val]
656 # Append differently whether it's a message (without space) or
657 # an option or list (with space).
658 switch -- $opt_name {
661 append opts($opt_name) $opt_val
664 set opts($opt_name) [concat $opts($opt_name) $opt_val]
669 foreach i $extra_options {
670 set opt_name [lindex $i 0]
671 set opt_val [lindex $i 1]
672 if ![info exists opts($opt_name)] {
673 perror "unknown option $opt_name given in extra_opts"
674 unresolved $subdir/$name
677 # Add extra option to end of existing option, adding space
679 if { ![regexp "warning|error" $opt_name]
680 && [string length $opts($opt_name)] } {
681 append opts($opt_name) " "
683 append opts($opt_name) $opt_val
686 foreach opt { as ld } {
687 regsub {\[big_or_little_endian\]} $opts($opt) \
688 [big_or_little_endian] opts($opt)
691 # Decide early whether we should run the test for this target.
692 if { [llength $opts(target)] > 0 } {
694 foreach targ $opts(target) {
695 if [istarget $targ] {
700 if { $targmatch == 0 } {
704 foreach targ $opts(notarget) {
705 if [istarget $targ] {
711 # It's meaningless to require an output-testing method when we
713 if { $opts(error) == "" } {
714 if {$opts(PROG) != ""} {
715 switch -- $opts(PROG) {
716 objdump { set program objdump }
717 nm { set program nm }
718 objcopy { set program objcopy }
719 readelf { set program readelf }
721 { perror "unrecognized program option $opts(PROG) in $file.d"
722 unresolved $subdir/$name
726 # Guess which program to run, by seeing which option was specified.
727 foreach p {objdump objcopy nm readelf} {
728 if {$opts($p) != ""} {
729 if {$program != ""} {
730 perror "ambiguous dump program in $file.d"
731 unresolved $subdir/$name
739 if { $program == "" && $opts(warning) == "" } {
740 perror "dump program unspecified in $file.d"
741 unresolved $subdir/$name
746 if { $opts(name) == "" } {
747 set testname "$subdir/$name"
749 set testname $opts(name)
752 if { $opts(source) == "" } {
753 set sourcefiles [list ${file}.s]
754 set asflags [list ""]
757 foreach sf $opts(source) {
758 if { [string match "/*" $sf] } {
759 lappend sourcefiles "$sf"
761 lappend sourcefiles "$srcdir/$subdir/$sf"
766 if { $opts(dump) == "" } {
769 set dfile $srcdir/$subdir/$opts(dump)
772 if { [string match "*--compress-debug-sections*" $opts(as)] \
773 && ![is_zlib_supported] } {
774 unsupported $testname
778 # Time to setup xfailures.
779 foreach targ $opts(xfail) {
783 # Assemble each file.
785 for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
786 set sourcefile [lindex $sourcefiles $i]
787 set sourceasflags [lindex $asflags $i]
788 set run_objcopy_objects 0
790 if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
791 set run_objcopy_objects 1
793 regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
795 set objfile "tmpdir/dump$i.o"
796 catch "exec rm -f $objfile" exec_output
797 lappend objfiles $objfile
798 set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
801 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
802 remote_upload host "ld.tmp"
803 set comp_output [prune_warnings [file_contents "ld.tmp"]]
804 remote_file host delete "ld.tmp"
805 remote_file build delete "ld.tmp"
807 if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then {
808 send_log "$comp_output\n"
809 verbose "$comp_output" 3
811 set exitstat "succeeded"
812 if { $cmdret != 0 } { set exitstat "failed" }
813 verbose -log "$exitstat with: <$comp_output>"
818 if { $run_objcopy_objects } {
819 set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
822 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
823 "" "/dev/null" "objcopy.tmp"]
824 remote_upload host "objcopy.tmp"
825 set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
826 remote_file host delete "objcopy.tmp"
827 remote_file build delete "objcopy.tmp"
829 if { [lindex $cmdret 0] != 0 \
830 || ![string match "" $comp_output] } {
831 send_log "$comp_output\n"
832 verbose "$comp_output" 3
834 set exitstat "succeeded"
835 if { $cmdret != 0 } { set exitstat "failed" }
836 verbose -log "$exitstat with: <$comp_output>"
843 set expmsg $opts(error)
844 if { $opts(warning) != "" } {
845 if { $expmsg != "" } {
846 perror "$testname: mixing error and warning test-directives"
849 set expmsg $opts(warning)
852 # Perhaps link the file(s).
854 set objfile "tmpdir/dump"
855 catch "exec rm -f $objfile" exec_output
857 # Add -L$srcdir/$subdir so that the linker command can use
858 # linker scripts in the source directory.
859 set cmd "$LD $LDFLAGS -L$srcdir/$subdir \
860 $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)"
863 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
864 remote_upload host "ld.tmp"
865 set comp_output [file_contents "ld.tmp"]
866 remote_file host delete "ld.tmp"
867 remote_file build delete "ld.tmp"
868 set cmdret [lindex $cmdret 0]
870 if { $cmdret == 0 && $run_objcopy } {
872 set objfile "tmpdir/dump1"
873 remote_file host delete $objfile
875 # Note that we don't use OBJCOPYFLAGS here; any flags must be
876 # explicitly specified.
877 set cmd "$OBJCOPY $opts(objcopy_linked_file) $infile $objfile"
880 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
881 remote_upload host "ld.tmp"
882 append comp_output [file_contents "ld.tmp"]
883 remote_file host delete "ld.tmp"
884 remote_file build delete "ld.tmp"
885 set cmdret [lindex $cmdret 0]
888 regsub "\n$" $comp_output "" comp_output
889 if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then {
890 set exitstat "succeeded"
891 if { $cmdret != 0 } { set exitstat "failed" }
892 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
893 send_log "$comp_output\n"
894 verbose "$comp_output" 3
896 if { ($expmsg == "") == ($comp_output == "") \
897 && [regexp $expmsg $comp_output] \
898 && (($cmdret == 0) == ($opts(error) == "")) } {
899 # We have the expected output from ld.
900 if { $opts(error) != "" || $program == "" } {
905 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
911 set objfile "tmpdir/dump0.o"
914 # We must not have expected failure if we get here.
915 if { $opts(error) != "" } {
920 set progopts1 $opts($program)
921 eval set progopts \$[string toupper $program]FLAGS
922 eval set binary \$[string toupper $program]
924 if { ![is_remote host] && [which $binary] == 0 } {
929 if { $progopts1 == "" } { set $progopts1 "-r" }
930 verbose "running $binary $progopts $progopts1" 3
932 # Objcopy, unlike the other two, won't send its output to stdout,
933 # so we have to run it specially.
934 set cmd "$binary $progopts $progopts1 $objfile > $dumpfile"
935 if { $program == "objcopy" } {
936 set cmd "$binary $progopts $progopts1 $objfile $dumpfile"
939 # Ensure consistent sorting of symbols
940 if {[info exists env(LC_ALL)]} {
941 set old_lc_all $env(LC_ALL)
945 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"]
946 set cmdret [lindex $cmdret 0]
947 remote_upload host "ld.tmp"
948 set comp_output [prune_warnings [file_contents "ld.tmp"]]
949 remote_file host delete "ld.tmp"
950 remote_file build delete "ld.tmp"
951 if {[info exists old_lc_all]} {
952 set env(LC_ALL) $old_lc_all
956 if { $cmdret != 0 || $comp_output != "" } {
957 send_log "exited abnormally with $cmdret, output:$comp_output\n"
962 if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 }
963 if { [regexp_diff $dumpfile "${dfile}"] } then {
965 if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
972 proc slurp_options { file } {
973 # If options_regsub(foo) is set to {a b}, then the contents of a
974 # "#foo:" line will have regsub -all applied to replace a with b.
975 global options_regsub
977 if [catch { set f [open $file r] } x] {
978 #perror "couldn't open `$file': $x"
983 # whitespace expression
986 # whitespace is ignored anywhere except within the options list;
987 # option names are alphabetic plus underscore only.
988 set pat "^#${ws}(\[a-zA-Z_\]*)$ws:${ws}(.*)$ws\$"
989 while { [gets $f line] != -1 } {
990 set line [string trim $line]
991 # Whitespace here is space-tab.
992 if [regexp $pat $line xxx opt_name opt_val] {
994 if [info exists options_regsub($opt_name)] {
995 set subst $options_regsub($opt_name)
996 regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
999 lappend opt_array [list $opt_name $opt_val]
1008 proc file_contents { filename } {
1009 set file [open $filename r]
1010 set contents [read $file]
1015 proc set_file_contents { filename contents } {
1016 set file [open $filename w]
1017 puts $file "$contents"
1021 # Create an archive using ar
1023 proc ar_simple_create { ar aropts target objects } {
1024 remote_file host delete $target
1026 set exec_output [run_host_cmd "$ar" "$aropts -rc $target $objects"]
1027 set exec_output [prune_warnings $exec_output]
1029 if [string match "" $exec_output] then {
1030 send_log "$exec_output\n"
1037 # List contains test-items with 3 items followed by 2 lists, one item and
1038 # one optional item:
1040 # 1:ld/ar leading options, placed before object files
1041 # 2:ld/ar trailing options, placed after object files
1042 # 3:assembler options
1043 # 4:filenames of assembler files
1044 # 5:list of actions, options and expected outputs.
1045 # 6:name of output file
1046 # 7:compiler flags (optional)
1048 # Actions: { command command-line-options file-containg-expected-output-regexps }
1050 # objdump: Apply objdump options on result.
1051 # nm: Apply nm options on result.
1052 # readelf: Apply readelf options on result.
1053 # ld: Don't apply anything on result. Compare output during linking with
1054 # the file containing regexps (which is the second arg, not the third).
1055 # Note that this *must* be the first action if it is to be used at all;
1056 # in all other cases, any output from the linker during linking is
1057 # treated as a sign of an error and FAILs the test.
1059 proc run_ld_link_tests { ldtests } {
1074 foreach testitem $ldtests {
1075 set testname [lindex $testitem 0]
1077 if ![runtest_file_p $runtests $testname] then {
1081 set ld_options [lindex $testitem 1]
1082 set ld_after [lindex $testitem 2]
1083 set as_options [lindex $testitem 3]
1084 set src_files [lindex $testitem 4]
1085 set actions [lindex $testitem 5]
1086 set binfile tmpdir/[lindex $testitem 6]
1087 set cflags [lindex $testitem 7]
1094 # verbose -log "Testname is $testname"
1095 # verbose -log "ld_options is $ld_options"
1096 # verbose -log "ld_after is $ld_after"
1097 # verbose -log "as_options is $as_options"
1098 # verbose -log "src_files is $src_files"
1099 # verbose -log "actions is $actions"
1100 # verbose -log "binfile is $binfile"
1102 # Assemble each file in the test.
1103 foreach src_file $src_files {
1104 set fileroot "[file rootname [file tail $src_file]]"
1105 set objfile "tmpdir/$fileroot.o"
1106 lappend objfiles $objfile
1108 if { [file extension $src_file] == ".c" } {
1109 set as_file "tmpdir/$fileroot.s"
1110 if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
1115 set as_file "$srcdir/$subdir/$src_file"
1117 if ![ld_assemble $as "$as_options $as_file" $objfile] {
1123 # Catch assembler errors.
1124 if { $is_unresolved } {
1125 unresolved $testname
1129 if { $binfile eq "tmpdir/" } {
1131 } elseif { [regexp ".*\\.a$" $binfile] } {
1132 if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
1135 } elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
1137 set ld_output "$exec_output"
1141 foreach actionlist $actions {
1142 set action [lindex $actionlist 0]
1143 set progopts [lindex $actionlist 1]
1145 # There are actions where we run regexp_diff on the
1146 # output, and there are other actions (presumably).
1147 # Handling of the former look the same.
1151 { set dump_prog $objdump }
1153 { set dump_prog $nm }
1155 { set dump_prog $READELF }
1157 { set dump_prog "ld" }
1160 perror "Unrecognized action $action"
1166 if { $action == "ld" } {
1167 set regexpfile $progopts
1168 verbose "regexpfile is $srcdir/$subdir/$regexpfile"
1169 set_file_contents "tmpdir/ld.messages" "$ld_output"
1170 verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
1171 if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$regexpfile"] } then {
1172 verbose "output is $ld_output" 2
1177 } elseif { !$maybe_failed && $dump_prog != "" } {
1178 set dumpfile [lindex $actionlist 2]
1179 set binary $dump_prog
1181 # Ensure consistent sorting of symbols
1182 if {[info exists env(LC_ALL)]} {
1183 set old_lc_all $env(LC_ALL)
1186 set cmd "$binary $progopts $binfile"
1187 set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"]
1189 remote_upload host "ld.stderr"
1190 set comp_output [prune_warnings [file_contents "ld.stderr"]]
1191 remote_file host delete "ld.stderr"
1192 remote_file build delete "ld.stderr"
1194 if {[info exists old_lc_all]} {
1195 set env(LC_ALL) $old_lc_all
1200 if ![string match "" $comp_output] then {
1201 send_log "$comp_output\n"
1206 remote_upload host "dump.out"
1208 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1209 verbose "output is [file_contents "dump.out"]" 2
1211 remote_file build delete "dump.out"
1212 remote_file host delete "dump.out"
1215 remote_file build delete "dump.out"
1216 remote_file host delete "dump.out"
1221 if { $is_unresolved } {
1222 unresolved $testname
1223 } elseif { $maybe_failed || $failed } {
1231 # This definition is taken from an unreleased version of DejaGnu. Once
1232 # that version gets released, and has been out in the world for a few
1233 # months at least, it may be safe to delete this copy.
1234 if ![string length [info proc prune_warnings]] {
1236 # prune_warnings -- delete various system verbosities from TEXT
1239 # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9
1241 # Sites with particular verbose os's may wish to override this in site.exp.
1243 proc prune_warnings { text } {
1244 # This is from sun4's. Do it for all machines for now.
1245 # The "\\1" is to try to preserve a "\n" but only if necessary.
1246 regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text
1248 # It might be tempting to get carried away and delete blank lines, etc.
1249 # Just delete *exactly* what we're ask to, and that's it.
1254 # targets_to_xfail is a list of target triplets to be xfailed.
1255 # ldtests contains test-items with 3 items followed by 1 lists, 2 items
1256 # and 3 optional items:
1259 # 2:assembler options
1260 # 3:filenames of source files
1261 # 4:name of output file
1263 # 6:compiler flags (optional)
1264 # 7:language (optional)
1265 # 8:linker warning (optional)
1267 proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
1280 foreach testitem $ldtests {
1281 foreach target $targets_to_xfail {
1284 set testname [lindex $testitem 0]
1285 set ld_options [lindex $testitem 1]
1286 set as_options [lindex $testitem 2]
1287 set src_files [lindex $testitem 3]
1288 set binfile tmpdir/[lindex $testitem 4]
1289 set expfile [lindex $testitem 5]
1290 set cflags [lindex $testitem 6]
1291 set lang [lindex $testitem 7]
1292 set warning [lindex $testitem 8]
1296 # verbose -log "Testname is $testname"
1297 # verbose -log "ld_options is $ld_options"
1298 # verbose -log "as_options is $as_options"
1299 # verbose -log "src_files is $src_files"
1300 # verbose -log "binfile is $binfile"
1302 # Assemble each file in the test.
1303 foreach src_file $src_files {
1304 set fileroot "[file rootname [file tail $src_file]]"
1305 set objfile "tmpdir/$fileroot.o"
1306 lappend objfiles $objfile
1308 # We ignore warnings since some compilers may generate
1309 # incorrect section attributes and the assembler will warn
1311 if { [ string match "c++" $lang ] } {
1312 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1314 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1318 # We have to use $CC to build PIE and shared library.
1319 if { [ string match "c" $lang ] } {
1320 set link_proc ld_simple_link
1322 } elseif { [ string match "c++" $lang ] } {
1323 set link_proc ld_simple_link
1325 } elseif { [ string match "-shared" $ld_options ] \
1326 || [ string match "-pie" $ld_options ] } {
1327 set link_proc ld_simple_link
1330 set link_proc ld_link
1334 if { $binfile eq "tmpdir/" } {
1338 } elseif ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
1342 # Check if exec_output is expected.
1343 if { $warning != "" } then {
1344 verbose -log "returned with: <$exec_output>, expected: <$warning>"
1345 if { [regexp $warning $exec_output] } then {
1352 if { $failed == 0 } {
1353 send_log "Running: $binfile > $binfile.out\n"
1354 verbose "Running: $binfile > $binfile.out"
1355 catch "exec $binfile > $binfile.out" exec_output
1357 if ![string match "" $exec_output] then {
1358 send_log "$exec_output\n"
1359 verbose "$exec_output" 1
1362 send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
1363 verbose "diff $binfile.out $srcdir/$subdir/$expfile"
1364 catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
1365 set exec_output [prune_warnings $exec_output]
1367 if ![string match "" $exec_output] then {
1368 send_log "$exec_output\n"
1369 verbose "$exec_output" 1
1375 if { $failed != 0 } {
1384 # List contains test-items with 3 items followed by 2 lists, one item and
1385 # one optional item:
1387 # 1:ld or ar options
1389 # 3:filenames of source files
1390 # 4:action and options.
1391 # 5:name of output file
1392 # 6:language (optional)
1393 # 7:linker warnings (optional)
1396 # objdump: Apply objdump options on result. Compare with regex (last arg).
1397 # nm: Apply nm options on result. Compare with regex (last arg).
1398 # readelf: Apply readelf options on result. Compare with regex (last arg).
1400 proc run_cc_link_tests { ldtests } {
1414 foreach testitem $ldtests {
1415 set testname [lindex $testitem 0]
1416 set ldflags [lindex $testitem 1]
1417 set cflags [lindex $testitem 2]
1418 set src_files [lindex $testitem 3]
1419 set actions [lindex $testitem 4]
1420 set binfile tmpdir/[lindex $testitem 5]
1421 set lang [lindex $testitem 6]
1422 set warnings [lindex $testitem 7]
1427 #verbose -log "testname is $testname"
1428 #verbose -log "ldflags is $ldflags"
1429 #verbose -log "cflags is $cflags"
1430 #verbose -log "src_files is $src_files"
1431 #verbose -log "actions is $actions"
1432 #verbose -log "binfile is $binfile"
1433 #verbose -log "lang is $lang"
1434 #verbose -log "warnings is $warnings"
1436 # Compile each file in the test.
1437 foreach src_file $src_files {
1438 set fileroot "[file rootname [file tail $src_file]]"
1439 set objfile "tmpdir/$fileroot.o"
1440 lappend objfiles $objfile
1442 # We ignore warnings since some compilers may generate
1443 # incorrect section attributes and the assembler will warn
1445 if { [ string match "c++" $lang ] } {
1446 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1448 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1452 # Clear error and warning counts.
1455 if { [ string match "c++" $lang ] } {
1461 if { $binfile eq "tmpdir/" } {
1463 } elseif { [regexp ".*\\.a$" $binfile] } {
1464 if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } {
1469 if { ![ld_simple_link $cc_cmd $binfile "-L$srcdir/$subdir $ldflags $objfiles"] } {
1473 # Check if exec_output is expected.
1474 if { $warnings != "" } then {
1475 verbose -log "returned with: <$exec_output>, expected: <$warnings>"
1476 if { [regexp $warnings $exec_output] } then {
1483 if { $failed == 1 } {
1488 if { $failed == 0 } {
1489 foreach actionlist $actions {
1490 set action [lindex $actionlist 0]
1491 set progopts [lindex $actionlist 1]
1493 # There are actions where we run regexp_diff on the
1494 # output, and there are other actions (presumably).
1495 # Handling of the former look the same.
1499 { set dump_prog $objdump }
1501 { set dump_prog $nm }
1503 { set dump_prog $READELF }
1506 perror "Unrecognized action $action"
1512 if { $dump_prog != "" } {
1513 set dumpfile [lindex $actionlist 2]
1514 set binary $dump_prog
1516 # Ensure consistent sorting of symbols
1517 if {[info exists env(LC_ALL)]} {
1518 set old_lc_all $env(LC_ALL)
1521 set cmd "$binary $progopts $binfile > dump.out"
1523 catch "exec $cmd" comp_output
1524 if {[info exists old_lc_all]} {
1525 set env(LC_ALL) $old_lc_all
1529 set comp_output [prune_warnings $comp_output]
1531 if ![string match "" $comp_output] then {
1532 send_log "$comp_output\n"
1537 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1538 verbose "output is [file_contents "dump.out"]" 2
1546 if { $failed != 0 } {
1548 } elseif { $is_unresolved == 0 } {
1551 unresolved $testname
1557 # Returns true if --gc-sections is supported on the target.
1559 proc check_gc_sections_available { } {
1560 global gc_sections_available_saved
1563 if {![info exists gc_sections_available_saved]} {
1564 # Some targets don't support gc-sections despite whatever's
1565 # advertised by ld's options.
1566 if { [istarget arc-*-*]
1567 || [istarget d30v-*-*]
1568 || [istarget dlx-*-*]
1569 || [istarget i960-*-*]
1570 || [istarget pj*-*-*]
1571 || [istarget alpha-*-*]
1572 || [istarget hppa*64-*-*]
1573 || [istarget i370-*-*]
1574 || [istarget i860-*-*]
1575 || [istarget ia64-*-*]
1576 || [istarget mep-*-*]
1577 || [istarget mn10200-*-*]
1578 || [istarget *-*-cygwin]
1579 || [istarget *-*-mingw*] } {
1580 set gc_sections_available_saved 0
1584 # elf2flt uses -q (--emit-relocs), which is incompatible with
1586 if { [board_info target exists ldflags]
1587 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
1588 set gc_sections_available_saved 0
1592 # Check if the ld used by gcc supports --gc-sections.
1593 # FIXME: this test is useless since ld --help always says
1594 # --gc-sections is available
1595 set ld_output [remote_exec host $ld "--help"]
1596 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
1597 set gc_sections_available_saved 1
1599 set gc_sections_available_saved 0
1602 return $gc_sections_available_saved
1605 # Returns true if -shared is supported on the target
1606 # Only used and accurate for ELF targets at the moment
1608 proc check_shared_lib_support { } {
1609 if {![istarget aarch64*-*-elf]
1610 && ![istarget arc-*-*]
1611 && ![istarget arm*-*-elf]
1612 && ![istarget avr-*-*]
1613 && ![istarget cr16-*-*]
1614 && ![istarget cris*-*-elf]
1615 && ![istarget crx-*-*]
1616 && ![istarget d10v-*-*]
1617 && ![istarget d30v-*-*]
1618 && ![istarget dlx-*-*]
1619 && ![istarget epiphany-*-*]
1620 && ![istarget fr30-*-*]
1621 && ![istarget frv-*-*]
1622 && ![istarget h8300-*-*]
1623 && ![istarget i860-*-*]
1624 && ![istarget i960-*-*]
1625 && ![istarget ip2k-*-*]
1626 && ![istarget iq2000-*-*]
1627 && ![istarget lm32-*-*]
1628 && ![istarget m32c-*-*]
1629 && ![istarget m32r-*-*]
1630 && ![istarget m6811-*-*]
1631 && ![istarget m6812-*-*]
1632 && ![istarget m68hc1*-*-*]
1633 && ![istarget mcore*-*-*]
1634 && ![istarget mep-*-*]
1635 && ![istarget microblaze-*-*]
1636 && ![istarget mips*-*-elf]
1637 && ![istarget mn10200-*-*]
1638 && ![istarget moxie-*-*]
1639 && ![istarget msp430-*-*]
1640 && ![istarget mt-*-*]
1641 && ![istarget nds32*-*-*]
1642 && ![istarget or1k*-*-*]
1643 && ![istarget pj-*-*]
1644 && ![istarget rl78-*-*]
1645 && ![istarget rx-*-*]
1646 && ![istarget spu-*-*]
1647 && ![istarget v850*-*-*]
1648 && ![istarget xstormy16-*-*]
1649 && ![istarget *-*-irix*]
1650 && ![istarget *-*-rtems] } {
1656 # Returns true if the target ld supports the plugin API.
1657 proc check_plugin_api_available { } {
1658 global plugin_api_available_saved
1660 if {![info exists plugin_api_available_saved]} {
1661 # Check if the ld used by gcc supports --plugin.
1662 set ld_output [remote_exec host $ld "--help"]
1663 if { [ string first "-plugin PLUGIN" $ld_output ] >= 0 } {
1664 set plugin_api_available_saved 1
1666 set plugin_api_available_saved 0
1669 return $plugin_api_available_saved
1672 # Sets ld_sysroot to the current sysroot (empty if not supported) and
1673 # returns true if the target ld supports sysroot.
1674 proc check_sysroot_available { } {
1675 global ld_sysroot_available_saved ld ld_sysroot
1676 if {![info exists ld_sysroot_available_saved]} {
1677 # Check if ld supports --sysroot *other* than empty.
1678 set ld_sysroot [string trimright [lindex [remote_exec host $ld "--print-sysroot"] 1]]
1679 if { $ld_sysroot == "" } {
1680 set ld_sysroot_available_saved 0
1682 set ld_sysroot_available_saved 1
1685 return $ld_sysroot_available_saved
1688 # Returns true if the target compiler supports LTO
1689 proc check_lto_available { } {
1690 global lto_available_saved
1693 if {![info exists lto_available_saved]} {
1694 if { [which $CC] == 0 } {
1695 set lto_available_saved 0
1698 # Check if gcc supports -flto -fuse-linker-plugin
1700 if [board_info [target_info name] exists cflags] {
1701 append flags " [board_info [target_info name] cflags]"
1703 if [board_info [target_info name] exists ldflags] {
1704 append flags " [board_info [target_info name] ldflags]"
1707 set basename "tmpdir/lto[pid]"
1708 set src ${basename}.c
1709 set output ${basename}.out
1710 set f [open $src "w"]
1711 puts $f "int main() { return 0; }"
1713 remote_download host $src
1714 set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
1715 remote_file host delete $src
1716 remote_file host delete $output
1719 return $lto_available_saved
1722 # Returns true if the target compiler supports LTO -ffat-lto-objects
1723 proc check_lto_fat_available { } {
1724 global lto_fat_available_saved
1727 if {![info exists lto_fat_available_saved]} {
1728 if { [which $CC] == 0 } {
1729 set lto_fat_available_saved 0
1732 # Check if gcc supports -flto -fuse-linker-plugin
1734 if [board_info [target_info name] exists cflags] {
1735 append flags " [board_info [target_info name] cflags]"
1737 if [board_info [target_info name] exists ldflags] {
1738 append flags " [board_info [target_info name] ldflags]"
1741 set basename "tmpdir/lto[pid]"
1742 set src ${basename}.c
1743 set output ${basename}.out
1744 set f [open $src "w"]
1745 puts $f "int main() { return 0; }"
1747 remote_download host $src
1748 set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
1749 remote_file host delete $src
1750 remote_file host delete $output
1753 return $lto_fat_available_saved
1756 # Returns true if the target compiler supports LTO and -shared
1757 proc check_lto_shared_available { } {
1758 global lto_shared_available_saved
1761 if {![info exists lto_shared_available_saved]} {
1762 if { [which $CC] == 0 } {
1763 set lto_shared_available_saved 0
1766 # Check if gcc supports -flto -fuse-linker-plugin -shared
1768 if [board_info [target_info name] exists cflags] {
1769 append flags " [board_info [target_info name] cflags]"
1771 if [board_info [target_info name] exists ldflags] {
1772 append flags " [board_info [target_info name] ldflags]"
1775 set basename "tmpdir/lto_shared[pid]"
1776 set src ${basename}.c
1777 set output ${basename}.so
1778 set f [open $src "w"]
1781 remote_download host $src
1782 set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
1783 remote_file host delete $src
1784 remote_file host delete $output
1787 return $lto_shared_available_saved
1790 # Check if the assembler supports CFI statements.
1792 proc check_as_cfi { } {
1793 global check_as_cfi_result
1795 if [info exists check_as_cfi_result] {
1796 return $check_as_cfi_result
1798 set as_file "tmpdir/check_as_cfi.s"
1799 set as_fh [open $as_file w 0666]
1800 puts $as_fh "# Generated file. DO NOT EDIT"
1801 puts $as_fh "\t.cfi_startproc"
1802 puts $as_fh "\t.cfi_endproc"
1804 remote_download host $as_file
1805 verbose -log "Checking CFI support:"
1806 rename "perror" "check_as_cfi_perror"
1807 proc perror { args } { }
1808 set success [ld_assemble $as $as_file "/dev/null"]
1810 rename "check_as_cfi_perror" "perror"
1811 #remote_file host delete $as_file
1812 set check_as_cfi_result $success
1816 # Provide virtual target "cfi" for targets supporting CFI.
1818 rename "istarget" "istarget_ld"
1819 proc istarget { target } {
1820 if {$target == "cfi"} {
1821 return [check_as_cfi]
1823 return [istarget_ld $target]