1 # Support routines for LD testsuite.
2 # Copyright (C) 1994-2015 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.
516 # Use the specified program to analyze the assembler or linker
517 # output file, and pass it FLAGS, in addition to the output name.
518 # Note that they are run with LC_ALL=C in the environment to give
519 # consistent sorting of symbols.
521 # source: SOURCE [FLAGS]
522 # Assemble the file SOURCE.s using the flags in the "as" directive
523 # and the (optional) FLAGS. If omitted, the source defaults to
525 # This is useful if several .d files want to share a .s file.
526 # More than one "source" directive can be given, which is useful
527 # when testing linking.
530 # Match against DUMP.d. If omitted, this defaults to FILE.d. This
531 # is useful if several .d files differ by options only. Options are
532 # always read from FILE.d.
535 # The test is expected to fail on TARGET. This may occur more than
539 # Only run the test for TARGET. This may occur more than once; the
540 # target being tested must match at least one. You may provide target
541 # name "cfi" for any target supporting the CFI statements.
544 # Do not run the test for TARGET. This may occur more than once;
545 # the target being tested must not match any of them.
548 # An error with message matching REGEX must be emitted for the test
549 # to pass. The PROG, readelf, objdump, nm and objcopy options have
550 # no meaning and need not be supplied if this is present. Multiple
551 # "error" directives append to the expected linker error message.
554 # Expect a linker warning matching REGEX. It is an error to issue
555 # both "error" and "warning". Multiple "warning" directives
556 # append to the expected linker warning message.
559 # Adding this option will cause the linker to generate a linker
560 # map file, using the -Map=MAPFILE command line option. If
561 # there is no -Map=MAPFILE in the 'ld: FLAGS' then one will be
562 # added to the linker command line. The contents of the
563 # generated MAPFILE are then compared against the regexp lines
564 # in FILE using `regexp_diff' (see below for details).
566 # Each option may occur at most once unless otherwise mentioned.
568 # After the option lines come regexp lines. `run_dump_test' calls
569 # `regexp_diff' to compare the output of the dumping tool against the
570 # regexps in FILE.d. `regexp_diff' is defined in binutils-common.exp;
571 # see further comments there.
573 proc run_dump_test { name {extra_options {}} } {
575 global OBJDUMP NM AS OBJCOPY READELF LD
576 global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
577 global host_triplet runtests
580 if [string match "*/*" $name] {
582 set name [file tail $name]
584 set file "$srcdir/$subdir/$name"
587 if ![runtest_file_p $runtests $name] then {
591 set opt_array [slurp_options "${file}.d"]
592 if { $opt_array == -1 } {
593 perror "error reading options from $file.d"
594 unresolved $subdir/$name
597 set dumpfile tmpdir/dump.out
602 set opts(ld_after_inputfiles) {}
605 set opts(notarget) {}
616 set opts(objcopy_linked_file) {}
617 set opts(objcopy_objects) {}
620 foreach i $opt_array {
621 set opt_name [lindex $i 0]
622 set opt_val [lindex $i 1]
623 if ![info exists opts($opt_name)] {
624 perror "unknown option $opt_name in file $file.d"
625 unresolved $subdir/$name
629 switch -- $opt_name {
636 # Move any source-specific as-flags to a separate list to
637 # simplify processing.
638 if { [llength $opt_val] > 1 } {
639 lappend asflags [lrange $opt_val 1 end]
640 set opt_val [lindex $opt_val 0]
646 if [string length $opts($opt_name)] {
647 perror "option $opt_name multiply set in $file.d"
648 unresolved $subdir/$name
652 # A single "# ld:" with no options should do the right thing.
653 if { $opt_name == "ld" } {
656 # Likewise objcopy_linked_file.
657 if { $opt_name == "objcopy_linked_file" } {
662 if { $opt_name == "as" || $opt_name == "ld" } {
663 set opt_val [subst $opt_val]
666 # Append differently whether it's a message (without space) or
667 # an option or list (with space).
668 switch -- $opt_name {
671 append opts($opt_name) $opt_val
674 set opts($opt_name) [concat $opts($opt_name) $opt_val]
679 foreach i $extra_options {
680 set opt_name [lindex $i 0]
681 set opt_val [lindex $i 1]
682 if ![info exists opts($opt_name)] {
683 perror "unknown option $opt_name given in extra_opts"
684 unresolved $subdir/$name
687 # Add extra option to end of existing option, adding space
689 if { ![regexp "warning|error" $opt_name]
690 && [string length $opts($opt_name)] } {
691 append opts($opt_name) " "
693 append opts($opt_name) $opt_val
696 foreach opt { as ld } {
697 regsub {\[big_or_little_endian\]} $opts($opt) \
698 [big_or_little_endian] opts($opt)
701 # Decide early whether we should run the test for this target.
702 if { [llength $opts(target)] > 0 } {
704 foreach targ $opts(target) {
705 if [istarget $targ] {
710 if { $targmatch == 0 } {
714 foreach targ $opts(notarget) {
715 if [istarget $targ] {
721 # It's meaningless to require an output-testing method when we
723 if { $opts(error) == "" } {
724 if {$opts(PROG) != ""} {
725 switch -- $opts(PROG) {
726 objdump { set program objdump }
727 nm { set program nm }
728 objcopy { set program objcopy }
729 readelf { set program readelf }
731 { perror "unrecognized program option $opts(PROG) in $file.d"
732 unresolved $subdir/$name
736 # Guess which program to run, by seeing which option was specified.
737 foreach p {objdump objcopy nm readelf} {
738 if {$opts($p) != ""} {
739 if {$program != ""} {
740 perror "ambiguous dump program in $file.d"
741 unresolved $subdir/$name
749 if { $program == "" && $opts(warning) == "" } {
750 perror "dump program unspecified in $file.d"
751 unresolved $subdir/$name
756 if { $opts(name) == "" } {
757 set testname "$subdir/$name"
759 set testname $opts(name)
762 if { $opts(source) == "" } {
763 set sourcefiles [list ${file}.s]
764 set asflags [list ""]
767 foreach sf $opts(source) {
768 if { [string match "/*" $sf] } {
769 lappend sourcefiles "$sf"
771 lappend sourcefiles "$srcdir/$subdir/$sf"
776 if { $opts(dump) == "" } {
779 set dfile $srcdir/$subdir/$opts(dump)
782 # Time to setup xfailures.
783 foreach targ $opts(xfail) {
787 # Assemble each file.
789 for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
790 set sourcefile [lindex $sourcefiles $i]
791 set sourceasflags [lindex $asflags $i]
792 set run_objcopy_objects 0
794 if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
795 set run_objcopy_objects 1
797 regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
799 set objfile "tmpdir/dump$i.o"
800 catch "exec rm -f $objfile" exec_output
801 lappend objfiles $objfile
802 set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
805 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
806 remote_upload host "ld.tmp"
807 set comp_output [prune_warnings [file_contents "ld.tmp"]]
808 remote_file host delete "ld.tmp"
809 remote_file build delete "ld.tmp"
811 if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then {
812 send_log "$comp_output\n"
813 verbose "$comp_output" 3
815 set exitstat "succeeded"
816 if { $cmdret != 0 } { set exitstat "failed" }
817 verbose -log "$exitstat with: <$comp_output>"
822 if { $run_objcopy_objects } {
823 set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
826 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
827 "" "/dev/null" "objcopy.tmp"]
828 remote_upload host "objcopy.tmp"
829 set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
830 remote_file host delete "objcopy.tmp"
831 remote_file build delete "objcopy.tmp"
833 if { [lindex $cmdret 0] != 0 \
834 || ![string match "" $comp_output] } {
835 send_log "$comp_output\n"
836 verbose "$comp_output" 3
838 set exitstat "succeeded"
839 if { $cmdret != 0 } { set exitstat "failed" }
840 verbose -log "$exitstat with: <$comp_output>"
847 set expmsg $opts(error)
848 if { $opts(warning) != "" } {
849 if { $expmsg != "" } {
850 perror "$testname: mixing error and warning test-directives"
853 set expmsg $opts(warning)
856 # Perhaps link the file(s).
858 set objfile "tmpdir/dump"
859 catch "exec rm -f $objfile" exec_output
861 # Add -L$srcdir/$subdir so that the linker command can use
862 # linker scripts in the source directory.
863 set cmd "$LD $LDFLAGS -L$srcdir/$subdir \
864 $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)"
866 # If needed then check for, or add a -Map option.
868 if { $opts(map) != "" } then {
869 if { [regexp -- "-Map=(\[^ \]+)" $cmd all mapfile] } then {
870 # Found existing mapfile option
871 verbose -log "Existing mapfile '$mapfile' found"
874 set mapfile "tmpdir/dump.map"
875 verbose -log "Adding mapfile '$mapfile'"
876 set cmd "$cmd -Map=$mapfile"
881 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
882 remote_upload host "ld.tmp"
883 set comp_output [file_contents "ld.tmp"]
884 remote_file host delete "ld.tmp"
885 remote_file build delete "ld.tmp"
886 set cmdret [lindex $cmdret 0]
888 if { $cmdret == 0 && $run_objcopy } {
890 set objfile "tmpdir/dump1"
891 remote_file host delete $objfile
893 # Note that we don't use OBJCOPYFLAGS here; any flags must be
894 # explicitly specified.
895 set cmd "$OBJCOPY $opts(objcopy_linked_file) $infile $objfile"
898 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
899 remote_upload host "ld.tmp"
900 append comp_output [file_contents "ld.tmp"]
901 remote_file host delete "ld.tmp"
902 remote_file build delete "ld.tmp"
903 set cmdret [lindex $cmdret 0]
906 regsub "\n$" $comp_output "" comp_output
907 if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then {
908 set exitstat "succeeded"
909 if { $cmdret != 0 } { set exitstat "failed" }
910 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
911 send_log "$comp_output\n"
912 verbose "$comp_output" 3
914 if { ($expmsg == "") == ($comp_output == "") \
915 && [regexp $expmsg $comp_output] \
916 && (($cmdret == 0) == ($opts(error) == "")) } {
917 # We have the expected output from ld.
918 if { $opts(error) != "" || $program == "" } {
923 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
929 if { $opts(map) != "" } then {
930 # Check the map file matches.
931 set map_pattern_file $srcdir/$subdir/$opts(map)
932 verbose -log "Compare '$mapfile' against '$map_pattern_file'"
933 if { [regexp_diff $mapfile $map_pattern_file] } then {
934 fail "$testname (map file check)"
936 pass "$testname (map file check)"
940 set objfile "tmpdir/dump0.o"
943 # We must not have expected failure if we get here.
944 if { $opts(error) != "" } {
949 set progopts1 $opts($program)
950 eval set progopts \$[string toupper $program]FLAGS
951 eval set binary \$[string toupper $program]
953 if { ![is_remote host] && [which $binary] == 0 } {
958 if { $progopts1 == "" } { set $progopts1 "-r" }
959 verbose "running $binary $progopts $progopts1" 3
961 # Objcopy, unlike the other two, won't send its output to stdout,
962 # so we have to run it specially.
963 set cmd "$binary $progopts $progopts1 $objfile > $dumpfile"
964 if { $program == "objcopy" } {
965 set cmd "$binary $progopts $progopts1 $objfile $dumpfile"
968 # Ensure consistent sorting of symbols
969 if {[info exists env(LC_ALL)]} {
970 set old_lc_all $env(LC_ALL)
974 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"]
975 set cmdret [lindex $cmdret 0]
976 remote_upload host "ld.tmp"
977 set comp_output [prune_warnings [file_contents "ld.tmp"]]
978 remote_file host delete "ld.tmp"
979 remote_file build delete "ld.tmp"
980 if {[info exists old_lc_all]} {
981 set env(LC_ALL) $old_lc_all
985 if { $cmdret != 0 || $comp_output != "" } {
986 send_log "exited abnormally with $cmdret, output:$comp_output\n"
991 if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 }
992 if { [regexp_diff $dumpfile "${dfile}"] } then {
994 if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
1001 proc slurp_options { file } {
1002 # If options_regsub(foo) is set to {a b}, then the contents of a
1003 # "#foo:" line will have regsub -all applied to replace a with b.
1004 global options_regsub
1006 if [catch { set f [open $file r] } x] {
1007 #perror "couldn't open `$file': $x"
1012 # whitespace expression
1015 # whitespace is ignored anywhere except within the options list;
1016 # option names are alphabetic plus underscore only.
1017 set pat "^#${ws}(\[a-zA-Z_\]*)$ws:${ws}(.*)$ws\$"
1018 while { [gets $f line] != -1 } {
1019 set line [string trim $line]
1020 # Whitespace here is space-tab.
1021 if [regexp $pat $line xxx opt_name opt_val] {
1023 if [info exists options_regsub($opt_name)] {
1024 set subst $options_regsub($opt_name)
1025 regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
1028 lappend opt_array [list $opt_name $opt_val]
1037 proc file_contents { filename } {
1038 set file [open $filename r]
1039 set contents [read $file]
1044 proc set_file_contents { filename contents } {
1045 set file [open $filename w]
1046 puts $file "$contents"
1050 # Create an archive using ar
1052 proc ar_simple_create { ar aropts target objects } {
1053 remote_file host delete $target
1055 set exec_output [run_host_cmd "$ar" "-rc $aropts $target $objects"]
1056 set exec_output [prune_warnings $exec_output]
1058 if [string match "" $exec_output] then {
1059 send_log "$exec_output\n"
1066 # List contains test-items with 3 items followed by 2 lists, one item and
1067 # one optional item:
1069 # 1:ld/ar leading options, placed before object files
1070 # 2:ld/ar trailing options, placed after object files
1071 # 3:assembler options
1072 # 4:filenames of assembler files
1073 # 5:list of actions, options and expected outputs.
1074 # 6:name of output file
1075 # 7:compiler flags (optional)
1077 # Actions: { command command-line-options file-containg-expected-output-regexps }
1079 # objdump: Apply objdump options on result.
1080 # nm: Apply nm options on result.
1081 # readelf: Apply readelf options on result.
1082 # ld: Don't apply anything on result. Compare output during linking with
1083 # the file containing regexps (which is the second arg, not the third).
1084 # Note that this *must* be the first action if it is to be used at all;
1085 # in all other cases, any output from the linker during linking is
1086 # treated as a sign of an error and FAILs the test.
1088 proc run_ld_link_tests { ldtests } {
1103 foreach testitem $ldtests {
1104 set testname [lindex $testitem 0]
1106 if ![runtest_file_p $runtests $testname] then {
1110 set ld_options [lindex $testitem 1]
1111 set ld_after [lindex $testitem 2]
1112 set as_options [lindex $testitem 3]
1113 set src_files [lindex $testitem 4]
1114 set actions [lindex $testitem 5]
1115 set binfile tmpdir/[lindex $testitem 6]
1116 set cflags [lindex $testitem 7]
1123 # verbose -log "Testname is $testname"
1124 # verbose -log "ld_options is $ld_options"
1125 # verbose -log "ld_after is $ld_after"
1126 # verbose -log "as_options is $as_options"
1127 # verbose -log "src_files is $src_files"
1128 # verbose -log "actions is $actions"
1129 # verbose -log "binfile is $binfile"
1131 # Assemble each file in the test.
1132 foreach src_file $src_files {
1133 set fileroot "[file rootname [file tail $src_file]]"
1134 set objfile "tmpdir/$fileroot.o"
1135 lappend objfiles $objfile
1137 if { [file extension $src_file] == ".c" } {
1138 set as_file "tmpdir/$fileroot.s"
1139 if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
1144 set as_file "$srcdir/$subdir/$src_file"
1146 if ![ld_assemble $as "$as_options $as_file" $objfile] {
1152 # Catch assembler errors.
1153 if { $is_unresolved } {
1154 unresolved $testname
1158 if { $binfile eq "tmpdir/" } {
1160 } elseif { [regexp ".*\\.a$" $binfile] } {
1161 if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
1164 } elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
1166 set ld_output "$exec_output"
1170 foreach actionlist $actions {
1171 set action [lindex $actionlist 0]
1172 set progopts [lindex $actionlist 1]
1174 # There are actions where we run regexp_diff on the
1175 # output, and there are other actions (presumably).
1176 # Handling of the former look the same.
1180 { set dump_prog $objdump }
1182 { set dump_prog $nm }
1184 { set dump_prog $READELF }
1186 { set dump_prog "ld" }
1189 perror "Unrecognized action $action"
1195 if { $action == "ld" } {
1196 set regexpfile $progopts
1197 verbose "regexpfile is $srcdir/$subdir/$regexpfile"
1198 set_file_contents "tmpdir/ld.messages" "$ld_output"
1199 verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
1200 if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$regexpfile"] } then {
1201 verbose "output is $ld_output" 2
1206 } elseif { !$maybe_failed && $dump_prog != "" } {
1207 set dumpfile [lindex $actionlist 2]
1208 set binary $dump_prog
1210 # Ensure consistent sorting of symbols
1211 if {[info exists env(LC_ALL)]} {
1212 set old_lc_all $env(LC_ALL)
1215 set cmd "$binary $progopts $binfile"
1216 set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"]
1218 remote_upload host "ld.stderr"
1219 set comp_output [prune_warnings [file_contents "ld.stderr"]]
1220 remote_file host delete "ld.stderr"
1221 remote_file build delete "ld.stderr"
1223 if {[info exists old_lc_all]} {
1224 set env(LC_ALL) $old_lc_all
1229 if ![string match "" $comp_output] then {
1230 send_log "$comp_output\n"
1235 remote_upload host "dump.out"
1237 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1238 verbose "output is [file_contents "dump.out"]" 2
1240 remote_file build delete "dump.out"
1241 remote_file host delete "dump.out"
1244 remote_file build delete "dump.out"
1245 remote_file host delete "dump.out"
1250 if { $is_unresolved } {
1251 unresolved $testname
1252 } elseif { $maybe_failed || $failed } {
1260 # This definition is taken from an unreleased version of DejaGnu. Once
1261 # that version gets released, and has been out in the world for a few
1262 # months at least, it may be safe to delete this copy.
1263 if ![string length [info proc prune_warnings]] {
1265 # prune_warnings -- delete various system verbosities from TEXT
1268 # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9
1270 # Sites with particular verbose os's may wish to override this in site.exp.
1272 proc prune_warnings { text } {
1273 # This is from sun4's. Do it for all machines for now.
1274 # The "\\1" is to try to preserve a "\n" but only if necessary.
1275 regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text
1277 # It might be tempting to get carried away and delete blank lines, etc.
1278 # Just delete *exactly* what we're ask to, and that's it.
1283 # targets_to_xfail is a list of target triplets to be xfailed.
1284 # ldtests contains test-items with 3 items followed by 1 lists, 2 items
1285 # and 3 optional items:
1288 # 2:assembler options
1289 # 3:filenames of source files
1290 # 4:name of output file
1292 # 6:compiler flags (optional)
1293 # 7:language (optional)
1294 # 8:linker warning (optional)
1296 proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
1309 foreach testitem $ldtests {
1310 foreach target $targets_to_xfail {
1313 set testname [lindex $testitem 0]
1314 set ld_options [lindex $testitem 1]
1315 set as_options [lindex $testitem 2]
1316 set src_files [lindex $testitem 3]
1317 set binfile tmpdir/[lindex $testitem 4]
1318 set expfile [lindex $testitem 5]
1319 set cflags [lindex $testitem 6]
1320 set lang [lindex $testitem 7]
1321 set warning [lindex $testitem 8]
1325 # verbose -log "Testname is $testname"
1326 # verbose -log "ld_options is $ld_options"
1327 # verbose -log "as_options is $as_options"
1328 # verbose -log "src_files is $src_files"
1329 # verbose -log "binfile is $binfile"
1331 # Assemble each file in the test.
1332 foreach src_file $src_files {
1333 set fileroot "[file rootname [file tail $src_file]]"
1334 set objfile "tmpdir/$fileroot.o"
1335 lappend objfiles $objfile
1337 # We ignore warnings since some compilers may generate
1338 # incorrect section attributes and the assembler will warn
1340 if { [ string match "c++" $lang ] } {
1341 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1343 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1347 # We have to use $CC to build PIE and shared library.
1348 if { [ string match "c" $lang ] } {
1349 set link_proc ld_simple_link
1351 } elseif { [ string match "c++" $lang ] } {
1352 set link_proc ld_simple_link
1354 } elseif { [ string match "-shared" $ld_options ] \
1355 || [ string match "-pie" $ld_options ] } {
1356 set link_proc ld_simple_link
1359 set link_proc ld_link
1363 if { $binfile eq "tmpdir/" } {
1367 } elseif ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
1371 # Check if exec_output is expected.
1372 if { $warning != "" } then {
1373 verbose -log "returned with: <$exec_output>, expected: <$warning>"
1374 if { [regexp $warning $exec_output] } then {
1381 if { $failed == 0 } {
1382 send_log "Running: $binfile > $binfile.out\n"
1383 verbose "Running: $binfile > $binfile.out"
1384 catch "exec $binfile > $binfile.out" exec_output
1386 if ![string match "" $exec_output] then {
1387 send_log "$exec_output\n"
1388 verbose "$exec_output" 1
1391 send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
1392 verbose "diff $binfile.out $srcdir/$subdir/$expfile"
1393 catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
1394 set exec_output [prune_warnings $exec_output]
1396 if ![string match "" $exec_output] then {
1397 send_log "$exec_output\n"
1398 verbose "$exec_output" 1
1404 if { $failed != 0 } {
1413 # List contains test-items with 3 items followed by 2 lists, one item and
1414 # one optional item:
1416 # 1:ld or ar options
1418 # 3:filenames of source files
1419 # 4:action and options.
1420 # 5:name of output file
1421 # 6:language (optional)
1422 # 7:linker warnings (optional)
1425 # objdump: Apply objdump options on result. Compare with regex (last arg).
1426 # nm: Apply nm options on result. Compare with regex (last arg).
1427 # readelf: Apply readelf options on result. Compare with regex (last arg).
1429 proc run_cc_link_tests { ldtests } {
1444 if [board_info [target_info name] exists cflags] {
1445 set board_cflags " [board_info [target_info name] cflags]"
1450 foreach testitem $ldtests {
1451 set testname [lindex $testitem 0]
1452 set ldflags [lindex $testitem 1]
1453 set cflags [lindex $testitem 2]
1454 set src_files [lindex $testitem 3]
1455 set actions [lindex $testitem 4]
1456 set binfile tmpdir/[lindex $testitem 5]
1457 set lang [lindex $testitem 6]
1458 set warnings [lindex $testitem 7]
1463 #verbose -log "testname is $testname"
1464 #verbose -log "ldflags is $ldflags"
1465 #verbose -log "cflags is $cflags"
1466 #verbose -log "src_files is $src_files"
1467 #verbose -log "actions is $actions"
1468 #verbose -log "binfile is $binfile"
1469 #verbose -log "lang is $lang"
1470 #verbose -log "warnings is $warnings"
1472 # Compile each file in the test.
1473 foreach src_file $src_files {
1474 set fileroot "[file rootname [file tail $src_file]]"
1475 set objfile "tmpdir/$fileroot.o"
1476 lappend objfiles $objfile
1478 # We ignore warnings since some compilers may generate
1479 # incorrect section attributes and the assembler will warn
1481 if { [ string match "c++" $lang ] } {
1482 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1484 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1488 # Clear error and warning counts.
1491 if { [ string match "c++" $lang ] } {
1497 if { $binfile eq "tmpdir/" } {
1499 } elseif { [regexp ".*\\.a$" $binfile] } {
1500 if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } {
1505 if { ![ld_simple_link $cc_cmd $binfile "$board_cflags -L$srcdir/$subdir $ldflags $objfiles"] } {
1509 # Check if exec_output is expected.
1510 if { $warnings != "" } then {
1511 verbose -log "returned with: <$exec_output>, expected: <$warnings>"
1512 if { [regexp $warnings $exec_output] } then {
1519 if { $failed == 1 } {
1524 if { $failed == 0 } {
1525 foreach actionlist $actions {
1526 set action [lindex $actionlist 0]
1527 set progopts [lindex $actionlist 1]
1529 # There are actions where we run regexp_diff on the
1530 # output, and there are other actions (presumably).
1531 # Handling of the former look the same.
1535 { set dump_prog $objdump }
1537 { set dump_prog $nm }
1539 { set dump_prog $READELF }
1542 perror "Unrecognized action $action"
1548 if { $dump_prog != "" } {
1549 set dumpfile [lindex $actionlist 2]
1550 set binary $dump_prog
1552 # Ensure consistent sorting of symbols
1553 if {[info exists env(LC_ALL)]} {
1554 set old_lc_all $env(LC_ALL)
1557 set cmd "$binary $progopts $binfile > dump.out"
1559 catch "exec $cmd" comp_output
1560 if {[info exists old_lc_all]} {
1561 set env(LC_ALL) $old_lc_all
1565 set comp_output [prune_warnings $comp_output]
1567 if ![string match "" $comp_output] then {
1568 send_log "$comp_output\n"
1573 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1574 verbose "output is [file_contents "dump.out"]" 2
1582 if { $failed != 0 } {
1584 } elseif { $is_unresolved == 0 } {
1587 unresolved $testname
1593 # Returns true if --gc-sections is supported on the target.
1595 proc check_gc_sections_available { } {
1596 global gc_sections_available_saved
1599 if {![info exists gc_sections_available_saved]} {
1600 # Some targets don't support gc-sections despite whatever's
1601 # advertised by ld's options.
1602 if { [istarget arc-*-*]
1603 || [istarget d30v-*-*]
1604 || [istarget dlx-*-*]
1605 || [istarget i960-*-*]
1606 || [istarget pj*-*-*]
1607 || [istarget alpha-*-*]
1608 || [istarget hppa*64-*-*]
1609 || [istarget i370-*-*]
1610 || [istarget i860-*-*]
1611 || [istarget ia64-*-*]
1612 || [istarget mep-*-*]
1613 || [istarget mn10200-*-*] } {
1614 set gc_sections_available_saved 0
1618 # elf2flt uses -q (--emit-relocs), which is incompatible with
1620 if { [board_info target exists ldflags]
1621 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
1622 set gc_sections_available_saved 0
1626 # Check if the ld used by gcc supports --gc-sections.
1627 # FIXME: this test is useless since ld --help always says
1628 # --gc-sections is available
1629 set ld_output [remote_exec host $ld "--help"]
1630 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
1631 set gc_sections_available_saved 1
1633 set gc_sections_available_saved 0
1636 return $gc_sections_available_saved
1639 # Returns true if -shared is supported on the target
1640 # Only used and accurate for ELF targets at the moment
1642 proc check_shared_lib_support { } {
1643 if {![istarget aarch64*-*-elf]
1644 && ![istarget arc-*-*]
1645 && ![istarget arm*-*-elf]
1646 && ![istarget avr-*-*]
1647 && ![istarget cr16-*-*]
1648 && ![istarget cris*-*-elf]
1649 && ![istarget crx-*-*]
1650 && ![istarget d10v-*-*]
1651 && ![istarget d30v-*-*]
1652 && ![istarget dlx-*-*]
1653 && ![istarget epiphany-*-*]
1654 && ![istarget fr30-*-*]
1655 && ![istarget frv-*-*]
1656 && ![istarget h8300-*-*]
1657 && ![istarget i860-*-*]
1658 && ![istarget i960-*-*]
1659 && ![istarget ip2k-*-*]
1660 && ![istarget iq2000-*-*]
1661 && ![istarget lm32-*-*]
1662 && ![istarget m32c-*-*]
1663 && ![istarget m32r-*-*]
1664 && ![istarget m6811-*-*]
1665 && ![istarget m6812-*-*]
1666 && ![istarget m68hc1*-*-*]
1667 && ![istarget mcore*-*-*]
1668 && ![istarget mep-*-*]
1669 && ![istarget microblaze-*-*]
1670 && ![istarget mips*-*-elf]
1671 && ![istarget mn10200-*-*]
1672 && ![istarget moxie-*-*]
1673 && ![istarget msp430-*-*]
1674 && ![istarget mt-*-*]
1675 && ![istarget nds32*-*-*]
1676 && ![istarget or1k*-*-*]
1677 && ![istarget pj-*-*]
1678 && ![istarget rl78-*-*]
1679 && ![istarget rx-*-*]
1680 && ![istarget spu-*-*]
1681 && ![istarget v850*-*-*]
1682 && ![istarget visium-*-*]
1683 && ![istarget xstormy16-*-*]
1684 && ![istarget *-*-irix*]
1685 && ![istarget *-*-rtems] } {
1691 # Returns true if the target ld supports the plugin API.
1692 proc check_plugin_api_available { } {
1693 global plugin_api_available_saved
1695 if {![info exists plugin_api_available_saved]} {
1696 # Check if the ld used by gcc supports --plugin.
1697 set ld_output [remote_exec host $ld "--help"]
1698 if { [ string first "-plugin PLUGIN" $ld_output ] >= 0 } {
1699 set plugin_api_available_saved 1
1701 set plugin_api_available_saved 0
1704 return $plugin_api_available_saved
1707 # Sets ld_sysroot to the current sysroot (empty if not supported) and
1708 # returns true if the target ld supports sysroot.
1709 proc check_sysroot_available { } {
1710 global ld_sysroot_available_saved ld ld_sysroot
1711 if {![info exists ld_sysroot_available_saved]} {
1712 # Check if ld supports --sysroot *other* than empty.
1713 set ld_sysroot [string trimright [lindex [remote_exec host $ld "--print-sysroot"] 1]]
1714 if { $ld_sysroot == "" } {
1715 set ld_sysroot_available_saved 0
1717 set ld_sysroot_available_saved 1
1720 return $ld_sysroot_available_saved
1723 # Returns true if the target compiler supports LTO
1724 proc check_lto_available { } {
1725 global lto_available_saved
1728 if {![info exists lto_available_saved]} {
1729 if { [which $CC] == 0 } {
1730 set lto_available_saved 0
1733 # Check if gcc supports -flto -fuse-linker-plugin
1735 if [board_info [target_info name] exists cflags] {
1736 append flags " [board_info [target_info name] cflags]"
1738 if [board_info [target_info name] exists ldflags] {
1739 append flags " [board_info [target_info name] ldflags]"
1742 set basename "tmpdir/lto[pid]"
1743 set src ${basename}.c
1744 set output ${basename}.out
1745 set f [open $src "w"]
1746 puts $f "int main() { return 0; }"
1748 remote_download host $src
1749 set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
1750 remote_file host delete $src
1751 remote_file host delete $output
1754 return $lto_available_saved
1757 # Returns true if the target compiler supports LTO -ffat-lto-objects
1758 proc check_lto_fat_available { } {
1759 global lto_fat_available_saved
1762 if {![info exists lto_fat_available_saved]} {
1763 if { [which $CC] == 0 } {
1764 set lto_fat_available_saved 0
1767 # Check if gcc supports -flto -fuse-linker-plugin
1769 if [board_info [target_info name] exists cflags] {
1770 append flags " [board_info [target_info name] cflags]"
1772 if [board_info [target_info name] exists ldflags] {
1773 append flags " [board_info [target_info name] ldflags]"
1776 set basename "tmpdir/lto[pid]"
1777 set src ${basename}.c
1778 set output ${basename}.out
1779 set f [open $src "w"]
1780 puts $f "int main() { return 0; }"
1782 remote_download host $src
1783 set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
1784 remote_file host delete $src
1785 remote_file host delete $output
1788 return $lto_fat_available_saved
1791 # Returns true if the target compiler supports LTO and -shared
1792 proc check_lto_shared_available { } {
1793 global lto_shared_available_saved
1796 if {![info exists lto_shared_available_saved]} {
1797 if { [which $CC] == 0 } {
1798 set lto_shared_available_saved 0
1801 # Check if gcc supports -flto -fuse-linker-plugin -shared
1803 if [board_info [target_info name] exists cflags] {
1804 append flags " [board_info [target_info name] cflags]"
1806 if [board_info [target_info name] exists ldflags] {
1807 append flags " [board_info [target_info name] ldflags]"
1810 set basename "tmpdir/lto_shared[pid]"
1811 set src ${basename}.c
1812 set output ${basename}.so
1813 set f [open $src "w"]
1816 remote_download host $src
1817 set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
1818 remote_file host delete $src
1819 remote_file host delete $output
1822 return $lto_shared_available_saved
1825 # Check if the assembler supports CFI statements.
1827 proc check_as_cfi { } {
1828 global check_as_cfi_result
1830 if [info exists check_as_cfi_result] {
1831 return $check_as_cfi_result
1833 set as_file "tmpdir/check_as_cfi.s"
1834 set as_fh [open $as_file w 0666]
1835 puts $as_fh "# Generated file. DO NOT EDIT"
1836 puts $as_fh "\t.cfi_startproc"
1837 puts $as_fh "\t.cfi_endproc"
1839 remote_download host $as_file
1840 verbose -log "Checking CFI support:"
1841 rename "perror" "check_as_cfi_perror"
1842 proc perror { args } { }
1843 set success [ld_assemble $as $as_file "/dev/null"]
1845 rename "check_as_cfi_perror" "perror"
1846 #remote_file host delete $as_file
1847 set check_as_cfi_result $success
1851 # Returns true if IFUNC works.
1853 proc check_ifunc_available { } {
1854 global ifunc_available_saved
1857 if {![info exists ifunc_available_saved]} {
1858 if { [which $CC] == 0 } {
1859 set ifunc_available_saved 0
1862 # Check if gcc supports -flto -fuse-linker-plugin
1864 if [board_info [target_info name] exists cflags] {
1865 append flags " [board_info [target_info name] cflags]"
1867 if [board_info [target_info name] exists ldflags] {
1868 append flags " [board_info [target_info name] ldflags]"
1871 set basename "tmpdir/ifunc[pid]"
1872 set src ${basename}.c
1873 set output ${basename}.out
1874 set f [open $src "w"]
1875 puts $f "extern int library_func2 (void);"
1876 puts $f "int main (void)"
1878 puts $f " if (library_func2 () != 2) __builtin_abort ();"
1879 puts $f " return 0; "
1881 puts $f "static int library_func1 (void) {return 2; }"
1882 puts $f "void *foo (void) __asm__ (\"library_func2\");"
1883 puts $f "void *foo (void) { return library_func1; }"
1884 puts $f "__asm__(\".type library_func2, %gnu_indirect_function\");"
1886 remote_download host $src
1887 set ifunc_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
1888 if { $ifunc_available_saved == 1 } {
1889 set ifunc_available_saved [run_host_cmd_yesno "$output" ""]
1891 remote_file host delete $src
1892 remote_file host delete $output
1895 return $ifunc_available_saved
1898 # Provide virtual target "cfi" for targets supporting CFI.
1900 rename "istarget" "istarget_ld"
1901 proc istarget { target } {
1902 if {$target == "cfi"} {
1903 return [check_as_cfi]
1905 return [istarget_ld $target]