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 "$link_output"
126 proc run_host_cmd_yesno { prog command } {
128 global errcnt warncnt
130 set exec_output [prune_warnings [run_host_cmd "$prog" "$command"]]
131 # Ignore error and warning.
134 if [string match "" $exec_output] then {
140 # Link an object using relocation.
142 proc default_ld_relocate { ld target objects } {
145 remote_file host delete $target
146 return [run_host_cmd_yesno "$ld" "$HOSTING_EMU -o $target -r $objects"]
149 # Check to see if ld is being invoked with a non-endian output format
151 proc is_endian_output_format { object_flags } {
153 if {[string match "*-oformat binary*" $object_flags] || \
154 [string match "*-oformat ieee*" $object_flags] || \
155 [string match "*-oformat ihex*" $object_flags] || \
156 [string match "*-oformat netbsd-core*" $object_flags] || \
157 [string match "*-oformat srec*" $object_flags] || \
158 [string match "*-oformat tekhex*" $object_flags] || \
159 [string match "*-oformat trad-core*" $object_flags] } then {
166 # Look for big-endian or little-endian switches in the multlib
167 # options and translate these into a -EB or -EL switch. Note
168 # we cannot rely upon proc process_multilib_options to do this
169 # for us because for some targets the compiler does not support
170 # -EB/-EL but it does support -mbig-endian/-mlittle-endian, and
171 # the site.exp file will include the switch "-mbig-endian"
172 # (rather than "big-endian") which is not detected by proc
173 # process_multilib_options.
175 proc big_or_little_endian {} {
177 if [board_info [target_info name] exists multilib_flags] {
178 set tmp_flags " [board_info [target_info name] multilib_flags]"
180 foreach x $tmp_flags {
182 {*big*endian eb EB -eb -EB -mb -meb} {
186 {*little*endian el EL -el -EL -ml -mel} {
198 # Link a program using ld.
200 proc default_ld_link { ld target objects } {
211 if { [ string match "* -pie *" $objects ] } {
212 set objs "$HOSTING_SCRT0 $objects"
213 set libs "$LIBS $HOSTING_SLIBS"
215 set objs "$HOSTING_CRT0 $objects"
216 set libs "$LIBS $HOSTING_LIBS"
219 if [is_endian_output_format $objects] then {
220 set flags [big_or_little_endian]
225 remote_file host delete $target
227 return [run_host_cmd_yesno "$ld" "$HOSTING_EMU $flags -o $target $objs $libs"]
230 # Link a program using ld, without including any libraries.
232 proc default_ld_simple_link { ld target objects } {
237 if [is_endian_output_format $objects] then {
238 set flags [big_or_little_endian]
241 remote_file host delete $target
242 set exec_output [run_host_cmd "$ld" "$flags -o $target $objects"]
243 set exec_output [prune_warnings $exec_output]
245 # We don't care if we get a warning about a non-existent start
246 # symbol, since the default linker script might use ENTRY.
247 regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
249 return [string match "" $exec_output]
252 # Compile an object using cc.
254 proc default_ld_compile { cc source object } {
263 if {[llength $cc_prog] > 1} then {
264 set cc_prog [lindex $cc_prog 0]
266 if {![is_remote host] && [which $cc_prog] == 0} then {
267 perror "$cc_prog does not exist"
271 remote_file build delete "$object"
272 remote_file host delete "$object"
274 set flags "$gcc_B_opt -I$srcdir/$subdir"
276 # If we are compiling with gcc, we want to add gcc_B_opt to flags.
277 # However, if $prog already has -B options, which might be the
278 # case when running gcc out of a build directory, we want our -B
279 # options to come first.
281 set ccparm [string first " " $cc]
283 if { $ccparm > 0 } then {
284 set ccflags [string range $cc $ccparm end]
285 set ccexe [string range $cc 0 $ccparm]
289 set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""]
290 if {[string match "*++*" $ccexe]} {
291 append flags " $CXXFLAGS"
293 append flags " $CFLAGS"
296 if [board_info [target_info name] exists cflags] {
297 append flags " [board_info [target_info name] cflags]"
300 if [board_info [target_info name] exists multilib_flags] {
301 append flags " [board_info [target_info name] multilib_flags]"
304 set cmd "$cc $flags $ccflags -c $source -o $object"
307 set status [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
308 remote_upload host "ld.tmp"
309 set exec_output [file_contents "ld.tmp"]
310 remote_file build delete "ld.tmp"
311 remote_file host delete "ld.tmp"
312 set exec_output [prune_warnings $exec_output]
313 if [string match "" $exec_output] then {
314 if {![file exists $object]} then {
315 regexp ".*/(\[^/\]*)$" $source all dobj
316 regsub "\\.c" $dobj ".o" realobj
317 verbose "looking for $realobj"
318 if {[remote_file host exists $realobj]} then {
319 verbose -log "mv $realobj $object"
320 remote_upload "$realobj" "$object"
322 perror "$object not found after compilation"
328 verbose -log "$exec_output"
329 perror "$source: compilation failed"
336 proc default_ld_assemble { as in_flags source object } {
342 if ![info exists ASFLAGS] { set ASFLAGS "" }
344 set flags "[big_or_little_endian] -I$srcdir/$subdir"
345 set exec_output [run_host_cmd "$as" "$flags $in_flags $ASFLAGS -o $object $source"]
346 set exec_output [prune_warnings $exec_output]
347 if [string match "" $exec_output] then {
350 perror "$source: assembly failed"
355 # Run nm on a file, putting the result in the array nm_output.
357 proc default_ld_nm { nm nmflags object } {
362 if {[info exists nm_output]} {
366 if ![info exists NMFLAGS] { set NMFLAGS "" }
368 # Ensure consistent sorting of symbols
369 if {[info exists env(LC_ALL)]} {
370 set old_lc_all $env(LC_ALL)
374 verbose -log "$nm $NMFLAGS $nmflags $object >tmpdir/nm.out"
376 set status [remote_exec host [concat sh -c [list "$nm $NMFLAGS $nmflags $object 2>ld.stderr"]] "" "/dev/null" "tmpdir/nm.out"]
377 if {[info exists old_lc_all]} {
378 set env(LC_ALL) $old_lc_all
382 remote_upload host "ld.stderr"
383 remote_upload host "tmpdir/nm.out" "tmpdir/nm.out"
384 set exec_output [prune_warnings [file_contents "ld.stderr"]]
385 remote_file host delete "ld.stderr"
386 remote_file build delete "ld.stderr"
387 if [string match "" $exec_output] then {
388 set file [open tmpdir/nm.out r]
389 while { [gets $file line] != -1 } {
391 if [regexp "^(\[0-9a-fA-F\]+) \[a-zA-Z0-9\] \\.*(.+)$" $line whole value name] {
392 set name [string trimleft $name "_"]
393 verbose "Setting nm_output($name) to 0x$value" 2
394 set nm_output($name) 0x$value
400 verbose -log "$exec_output"
401 perror "$object: nm failed"
406 # Define various symbols needed when not linking against all
408 proc ld_simple_link_defsyms {} {
410 set flags "--defsym __stack_chk_fail=0"
412 # ARM targets call __gccmain
413 if {[istarget arm*-*-*]} {
414 append flags " --defsym __gccmain=0"
417 # Windows targets need __main, some prefixed with underscore.
418 if {[istarget *-*-cygwin* ] || [istarget *-*-mingw*]} {
419 append flags " --defsym __main=0 --defsym ___main=0"
422 # PowerPC EABI code calls __eabi.
423 if {[istarget powerpc*-*-eabi*] || [istarget powerpc*-*-rtems*]} {
424 append flags " --defsym __eabi=0"
427 # mn10200 code calls __truncsipsi2_d0_d2.
428 if {[istarget mn10200*-*-*]} then {
429 append flags " --defsym __truncsipsi2_d0_d2=0"
432 # m6811/m6812 code has references to soft registers.
433 if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
434 append flags " --defsym _.frame=0 --defsym _.d1=0 --defsym _.d2=0"
435 append flags " --defsym _.d3=0 --defsym _.d4=0"
436 append flags " --defsym _.tmp=0 --defsym _.xy=0 --defsym _.z=0"
439 # Some OpenBSD targets have ProPolice and reference __guard and
440 # __stack_smash_handler.
441 if [istarget *-*-openbsd*] {
442 append flags " --defsym __guard=0"
443 append flags " --defsym __stack_smash_handler=0"
449 # run_dump_test FILE (optional:) EXTRA_OPTIONS
450 # Copied from gas testsuite, tweaked and further extended.
452 # Assemble a .s file, then run some utility on it and check the output.
454 # There should be an assembly language file named FILE.s in the test
455 # suite directory, and a pattern file called FILE.d. `run_dump_test'
456 # will assemble FILE.s, run some tool like `objdump', `objcopy', or
457 # `nm' on the .o file to produce textual output, and then analyze that
458 # with regexps. The FILE.d file specifies what program to run, and
459 # what to expect in its output.
461 # The FILE.d file begins with zero or more option lines, which specify
462 # flags to pass to the assembler, the program to run to dump the
463 # assembler's output, and the options it wants. The option lines have
468 # OPTION is the name of some option, like "name" or "objdump", and
469 # VALUE is OPTION's value. The valid options are described below.
470 # Whitespace is ignored everywhere, except within VALUE. The option
471 # list ends with the first line that doesn't match the above syntax
472 # (hmm, not great for error detection).
474 # The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
475 # two-element lists. The first element of each is an option name, and
476 # the second additional arguments to be added on to the end of the
477 # option list as given in FILE.d. (If omitted, no additional options
480 # The interesting options are:
483 # The name of this test, passed to DejaGNU's `pass' and `fail'
484 # commands. If omitted, this defaults to FILE, the root of the
485 # .s and .d files' names.
488 # When assembling, pass FLAGS to the assembler.
489 # If assembling several files, you can pass different assembler
490 # options in the "source" directives. See below.
493 # Link assembled files using FLAGS, in the order of the "source"
494 # directives, when using multiple files.
496 # ld_after_inputfiles: FLAGS
497 # Similar to "ld", but put after all input files.
499 # objcopy_objects: FLAGS
500 # Run objcopy with the specified flags after assembling any source
501 # that has the special marker RUN_OBJCOPY in the source specific
504 # objcopy_linked_file: FLAGS
505 # Run objcopy on the linked file with the specified flags.
506 # This lets you transform the linked file using objcopy, before the
507 # result is analyzed by an analyzer program specified below (which
508 # may in turn *also* be objcopy).
511 # The name of the program to run to analyze the .o file produced
512 # by the assembler or the linker output. This can be omitted;
513 # run_dump_test will guess which program to run by seeing which of
514 # the flags options below is present.
520 # Use the specified program to analyze the assembler or linker
521 # output file, and pass it FLAGS, in addition to the output name.
522 # Note that they are run with LC_ALL=C in the environment to give
523 # consistent sorting of symbols.
525 # source: SOURCE [FLAGS]
526 # Assemble the file SOURCE.s using the flags in the "as" directive
527 # and the (optional) FLAGS. If omitted, the source defaults to
529 # This is useful if several .d files want to share a .s file.
530 # More than one "source" directive can be given, which is useful
531 # when testing linking.
534 # Match against DUMP.d. If omitted, this defaults to FILE.d. This
535 # is useful if several .d files differ by options only. Options are
536 # always read from FILE.d.
539 # The test is expected to fail on TARGET. This may occur more than
543 # Only run the test for TARGET. This may occur more than once; the
544 # target being tested must match at least one. You may provide target
545 # name "cfi" for any target supporting the CFI statements.
548 # Do not run the test for TARGET. This may occur more than once;
549 # the target being tested must not match any of them.
552 # An error with message matching REGEX must be emitted for the test
553 # to pass. The PROG, readelf, objdump, nm and objcopy options have
554 # no meaning and need not be supplied if this is present. Multiple
555 # "error" directives append to the expected linker error message.
558 # Expect a linker warning matching REGEX. It is an error to issue
559 # both "error" and "warning". Multiple "warning" directives
560 # append to the expected linker warning message.
563 # Adding this option will cause the linker to generate a linker
564 # map file, using the -Map=MAPFILE command line option. If
565 # there is no -Map=MAPFILE in the 'ld: FLAGS' then one will be
566 # added to the linker command line. The contents of the
567 # generated MAPFILE are then compared against the regexp lines
568 # in FILE using `regexp_diff' (see below for details).
570 # Each option may occur at most once unless otherwise mentioned.
572 # After the option lines come regexp lines. `run_dump_test' calls
573 # `regexp_diff' to compare the output of the dumping tool against the
574 # regexps in FILE.d. `regexp_diff' is defined in binutils-common.exp;
575 # see further comments there.
577 proc run_dump_test { name {extra_options {}} } {
579 global OBJDUMP NM AS OBJCOPY READELF LD
580 global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
581 global host_triplet runtests
584 if [string match "*/*" $name] {
586 set name [file tail $name]
588 set file "$srcdir/$subdir/$name"
591 if ![runtest_file_p $runtests $name] then {
595 set opt_array [slurp_options "${file}.d"]
596 if { $opt_array == -1 } {
597 perror "error reading options from $file.d"
598 unresolved $subdir/$name
601 set dumpfile tmpdir/dump.out
606 set opts(ld_after_inputfiles) {}
609 set opts(notarget) {}
620 set opts(objcopy_linked_file) {}
621 set opts(objcopy_objects) {}
624 foreach i $opt_array {
625 set opt_name [lindex $i 0]
626 set opt_val [lindex $i 1]
627 if ![info exists opts($opt_name)] {
628 perror "unknown option $opt_name in file $file.d"
629 unresolved $subdir/$name
633 switch -- $opt_name {
640 # Move any source-specific as-flags to a separate list to
641 # simplify processing.
642 if { [llength $opt_val] > 1 } {
643 lappend asflags [lrange $opt_val 1 end]
644 set opt_val [lindex $opt_val 0]
650 if [string length $opts($opt_name)] {
651 perror "option $opt_name multiply set in $file.d"
652 unresolved $subdir/$name
656 # A single "# ld:" with no options should do the right thing.
657 if { $opt_name == "ld" } {
660 # Likewise objcopy_linked_file.
661 if { $opt_name == "objcopy_linked_file" } {
666 if { $opt_name == "as" || $opt_name == "ld" } {
667 set opt_val [subst $opt_val]
670 # Append differently whether it's a message (without space) or
671 # an option or list (with space).
672 switch -- $opt_name {
675 append opts($opt_name) $opt_val
678 set opts($opt_name) [concat $opts($opt_name) $opt_val]
683 foreach i $extra_options {
684 set opt_name [lindex $i 0]
685 set opt_val [lindex $i 1]
686 if ![info exists opts($opt_name)] {
687 perror "unknown option $opt_name given in extra_opts"
688 unresolved $subdir/$name
691 # Add extra option to end of existing option, adding space
693 if { ![regexp "warning|error" $opt_name]
694 && [string length $opts($opt_name)] } {
695 append opts($opt_name) " "
697 append opts($opt_name) $opt_val
700 foreach opt { as ld } {
701 regsub {\[big_or_little_endian\]} $opts($opt) \
702 [big_or_little_endian] opts($opt)
705 # Decide early whether we should run the test for this target.
706 if { [llength $opts(target)] > 0 } {
708 foreach targ $opts(target) {
709 if [istarget $targ] {
714 if { $targmatch == 0 } {
718 foreach targ $opts(notarget) {
719 if [istarget $targ] {
725 # It's meaningless to require an output-testing method when we
727 if { $opts(error) == "" } {
728 if {$opts(PROG) != ""} {
729 switch -- $opts(PROG) {
730 objdump { set program objdump }
731 nm { set program nm }
732 objcopy { set program objcopy }
733 readelf { set program readelf }
735 { perror "unrecognized program option $opts(PROG) in $file.d"
736 unresolved $subdir/$name
740 # Guess which program to run, by seeing which option was specified.
741 foreach p {objdump objcopy nm readelf} {
742 if {$opts($p) != ""} {
743 if {$program != ""} {
744 perror "ambiguous dump program in $file.d"
745 unresolved $subdir/$name
753 if { $program == "" && $opts(warning) == "" } {
754 perror "dump program unspecified in $file.d"
755 unresolved $subdir/$name
760 if { $opts(name) == "" } {
761 set testname "$subdir/$name"
763 set testname $opts(name)
766 if { $opts(source) == "" } {
767 set sourcefiles [list ${file}.s]
768 set asflags [list ""]
771 foreach sf $opts(source) {
772 if { [string match "/*" $sf] } {
773 lappend sourcefiles "$sf"
775 lappend sourcefiles "$srcdir/$subdir/$sf"
780 if { $opts(dump) == "" } {
783 set dfile $srcdir/$subdir/$opts(dump)
786 # Time to setup xfailures.
787 foreach targ $opts(xfail) {
791 # Assemble each file.
793 for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
794 set sourcefile [lindex $sourcefiles $i]
795 set sourceasflags [lindex $asflags $i]
796 set run_objcopy_objects 0
798 if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
799 set run_objcopy_objects 1
801 regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
803 set objfile "tmpdir/dump$i.o"
804 catch "exec rm -f $objfile" exec_output
805 lappend objfiles $objfile
806 set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
809 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
810 remote_upload host "ld.tmp"
811 set comp_output [prune_warnings [file_contents "ld.tmp"]]
812 remote_file host delete "ld.tmp"
813 remote_file build delete "ld.tmp"
815 if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then {
816 send_log "$comp_output\n"
817 verbose "$comp_output" 3
819 set exitstat "succeeded"
820 if { $cmdret != 0 } { set exitstat "failed" }
821 verbose -log "$exitstat with: <$comp_output>"
826 if { $run_objcopy_objects } {
827 set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
830 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
831 "" "/dev/null" "objcopy.tmp"]
832 remote_upload host "objcopy.tmp"
833 set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
834 remote_file host delete "objcopy.tmp"
835 remote_file build delete "objcopy.tmp"
837 if { [lindex $cmdret 0] != 0 \
838 || ![string match "" $comp_output] } {
839 send_log "$comp_output\n"
840 verbose "$comp_output" 3
842 set exitstat "succeeded"
843 if { $cmdret != 0 } { set exitstat "failed" }
844 verbose -log "$exitstat with: <$comp_output>"
851 set expmsg $opts(error)
852 if { $opts(warning) != "" } {
853 if { $expmsg != "" } {
854 perror "$testname: mixing error and warning test-directives"
857 set expmsg $opts(warning)
860 # Perhaps link the file(s).
862 set objfile "tmpdir/dump"
863 catch "exec rm -f $objfile" exec_output
865 # Add -L$srcdir/$subdir so that the linker command can use
866 # linker scripts in the source directory.
867 set cmd "$LD $LDFLAGS -L$srcdir/$subdir \
868 $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)"
870 # If needed then check for, or add a -Map option.
872 if { $opts(map) != "" } then {
873 if { [regexp -- "-Map=(\[^ \]+)" $cmd all mapfile] } then {
874 # Found existing mapfile option
875 verbose -log "Existing mapfile '$mapfile' found"
878 set mapfile "tmpdir/dump.map"
879 verbose -log "Adding mapfile '$mapfile'"
880 set cmd "$cmd -Map=$mapfile"
885 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
886 remote_upload host "ld.tmp"
887 set comp_output [file_contents "ld.tmp"]
888 remote_file host delete "ld.tmp"
889 remote_file build delete "ld.tmp"
890 set cmdret [lindex $cmdret 0]
892 if { $cmdret == 0 && $run_objcopy } {
894 set objfile "tmpdir/dump1"
895 remote_file host delete $objfile
897 # Note that we don't use OBJCOPYFLAGS here; any flags must be
898 # explicitly specified.
899 set cmd "$OBJCOPY $opts(objcopy_linked_file) $infile $objfile"
902 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
903 remote_upload host "ld.tmp"
904 append comp_output [file_contents "ld.tmp"]
905 remote_file host delete "ld.tmp"
906 remote_file build delete "ld.tmp"
907 set cmdret [lindex $cmdret 0]
910 regsub "\n$" $comp_output "" comp_output
911 if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then {
912 set exitstat "succeeded"
913 if { $cmdret != 0 } { set exitstat "failed" }
914 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
915 send_log "$comp_output\n"
916 verbose "$comp_output" 3
918 if { ($expmsg == "") == ($comp_output == "") \
919 && [regexp $expmsg $comp_output] \
920 && (($cmdret == 0) == ($opts(error) == "")) } {
921 # We have the expected output from ld.
922 if { $opts(error) != "" || $program == "" } {
927 verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
933 if { $opts(map) != "" } then {
934 # Check the map file matches.
935 set map_pattern_file $srcdir/$subdir/$opts(map)
936 verbose -log "Compare '$mapfile' against '$map_pattern_file'"
937 if { [regexp_diff $mapfile $map_pattern_file] } then {
938 fail "$testname (map file check)"
940 pass "$testname (map file check)"
944 set objfile "tmpdir/dump0.o"
947 # We must not have expected failure if we get here.
948 if { $opts(error) != "" } {
953 set progopts1 $opts($program)
954 eval set progopts \$[string toupper $program]FLAGS
955 eval set binary \$[string toupper $program]
957 if { ![is_remote host] && [which $binary] == 0 } {
962 if { $progopts1 == "" } { set $progopts1 "-r" }
963 verbose "running $binary $progopts $progopts1" 3
965 # Objcopy, unlike the other two, won't send its output to stdout,
966 # so we have to run it specially.
967 set cmd "$binary $progopts $progopts1 $objfile > $dumpfile"
968 if { $program == "objcopy" } {
969 set cmd "$binary $progopts $progopts1 $objfile $dumpfile"
972 # Ensure consistent sorting of symbols
973 if {[info exists env(LC_ALL)]} {
974 set old_lc_all $env(LC_ALL)
978 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"]
979 set cmdret [lindex $cmdret 0]
980 remote_upload host "ld.tmp"
981 set comp_output [prune_warnings [file_contents "ld.tmp"]]
982 remote_file host delete "ld.tmp"
983 remote_file build delete "ld.tmp"
984 if {[info exists old_lc_all]} {
985 set env(LC_ALL) $old_lc_all
989 if { $cmdret != 0 || $comp_output != "" } {
990 send_log "exited abnormally with $cmdret, output:$comp_output\n"
995 if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 }
996 if { [regexp_diff $dumpfile "${dfile}"] } then {
998 if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
1005 proc slurp_options { file } {
1006 # If options_regsub(foo) is set to {a b}, then the contents of a
1007 # "#foo:" line will have regsub -all applied to replace a with b.
1008 global options_regsub
1010 if [catch { set f [open $file r] } x] {
1011 #perror "couldn't open `$file': $x"
1016 # whitespace expression
1019 # whitespace is ignored anywhere except within the options list;
1020 # option names are alphabetic plus underscore only.
1021 set pat "^#${ws}(\[a-zA-Z_\]*)$ws:${ws}(.*)$ws\$"
1022 while { [gets $f line] != -1 } {
1023 set line [string trim $line]
1024 # Whitespace here is space-tab.
1025 if [regexp $pat $line xxx opt_name opt_val] {
1027 if [info exists options_regsub($opt_name)] {
1028 set subst $options_regsub($opt_name)
1029 regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
1032 lappend opt_array [list $opt_name $opt_val]
1041 proc file_contents { filename } {
1042 set file [open $filename r]
1043 set contents [read $file]
1048 proc set_file_contents { filename contents } {
1049 set file [open $filename w]
1050 puts $file "$contents"
1054 # Create an archive using ar
1056 proc ar_simple_create { ar aropts target objects } {
1057 remote_file host delete $target
1059 set exec_output [run_host_cmd "$ar" "-rc $aropts $target $objects"]
1060 set exec_output [prune_warnings $exec_output]
1062 if [string match "" $exec_output] then {
1063 send_log "$exec_output\n"
1070 # List contains test-items with 3 items followed by 2 lists, one item and
1071 # one optional item:
1073 # 1:ld/ar leading options, placed before object files
1074 # 2:ld/ar trailing options, placed after object files
1075 # 3:assembler options
1076 # 4:filenames of assembler files
1077 # 5:list of actions, options and expected outputs.
1078 # 6:name of output file
1079 # 7:compiler flags (optional)
1081 # Actions: { command command-line-options file-containg-expected-output-regexps }
1083 # objdump: Apply objdump options on result.
1084 # nm: Apply nm options on result.
1085 # readelf: Apply readelf options on result.
1086 # ld: Don't apply anything on result. Compare output during linking with
1087 # the file containing regexps (which is the second arg, not the third).
1088 # Note that this *must* be the first action if it is to be used at all;
1089 # in all other cases, any output from the linker during linking is
1090 # treated as a sign of an error and FAILs the test.
1092 proc run_ld_link_tests { ldtests } {
1107 foreach testitem $ldtests {
1108 set testname [lindex $testitem 0]
1110 if ![runtest_file_p $runtests $testname] then {
1114 set ld_options [lindex $testitem 1]
1115 set ld_after [lindex $testitem 2]
1116 set as_options [lindex $testitem 3]
1117 set src_files [lindex $testitem 4]
1118 set actions [lindex $testitem 5]
1119 set binfile tmpdir/[lindex $testitem 6]
1120 set cflags [lindex $testitem 7]
1127 # verbose -log "Testname is $testname"
1128 # verbose -log "ld_options is $ld_options"
1129 # verbose -log "ld_after is $ld_after"
1130 # verbose -log "as_options is $as_options"
1131 # verbose -log "src_files is $src_files"
1132 # verbose -log "actions is $actions"
1133 # verbose -log "binfile is $binfile"
1135 # Assemble each file in the test.
1136 foreach src_file $src_files {
1137 set fileroot "[file rootname [file tail $src_file]]"
1138 set objfile "tmpdir/$fileroot.o"
1139 lappend objfiles $objfile
1141 if { [file extension $src_file] == ".c" } {
1142 set as_file "tmpdir/$fileroot.s"
1143 if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
1148 set as_file "$srcdir/$subdir/$src_file"
1150 if ![ld_assemble $as "$as_options $as_file" $objfile] {
1156 # Catch assembler errors.
1157 if { $is_unresolved } {
1158 unresolved $testname
1162 if { $binfile eq "tmpdir/" } {
1164 } elseif { [regexp ".*\\.a$" $binfile] } {
1165 if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
1168 } elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
1170 set ld_output "$exec_output"
1174 foreach actionlist $actions {
1175 set action [lindex $actionlist 0]
1176 set progopts [lindex $actionlist 1]
1178 # There are actions where we run regexp_diff on the
1179 # output, and there are other actions (presumably).
1180 # Handling of the former look the same.
1184 { set dump_prog $objdump }
1186 { set dump_prog $nm }
1188 { set dump_prog $READELF }
1190 { set dump_prog "ld" }
1193 perror "Unrecognized action $action"
1199 if { $action == "ld" } {
1200 set regexpfile $progopts
1201 verbose "regexpfile is $srcdir/$subdir/$regexpfile"
1202 set_file_contents "tmpdir/ld.messages" "$ld_output"
1203 verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
1204 if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$regexpfile"] } then {
1205 verbose "output is $ld_output" 2
1210 } elseif { !$maybe_failed && $dump_prog != "" } {
1211 set dumpfile [lindex $actionlist 2]
1212 set binary $dump_prog
1214 # Ensure consistent sorting of symbols
1215 if {[info exists env(LC_ALL)]} {
1216 set old_lc_all $env(LC_ALL)
1219 set cmd "$binary $progopts $binfile"
1220 set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"]
1222 remote_upload host "ld.stderr"
1223 set comp_output [prune_warnings [file_contents "ld.stderr"]]
1224 remote_file host delete "ld.stderr"
1225 remote_file build delete "ld.stderr"
1227 if {[info exists old_lc_all]} {
1228 set env(LC_ALL) $old_lc_all
1233 if ![string match "" $comp_output] then {
1234 send_log "$comp_output\n"
1239 remote_upload host "dump.out"
1241 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1242 verbose "output is [file_contents "dump.out"]" 2
1244 remote_file build delete "dump.out"
1245 remote_file host delete "dump.out"
1248 remote_file build delete "dump.out"
1249 remote_file host delete "dump.out"
1254 if { $is_unresolved } {
1255 unresolved $testname
1256 } elseif { $maybe_failed || $failed } {
1264 # This definition is taken from an unreleased version of DejaGnu. Once
1265 # that version gets released, and has been out in the world for a few
1266 # months at least, it may be safe to delete this copy.
1267 if ![string length [info proc prune_warnings]] {
1269 # prune_warnings -- delete various system verbosities from TEXT
1272 # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9
1274 # Sites with particular verbose os's may wish to override this in site.exp.
1276 proc prune_warnings { text } {
1277 # This is from sun4's. Do it for all machines for now.
1278 # The "\\1" is to try to preserve a "\n" but only if necessary.
1279 regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text
1281 # It might be tempting to get carried away and delete blank lines, etc.
1282 # Just delete *exactly* what we're ask to, and that's it.
1287 # targets_to_xfail is a list of target triplets to be xfailed.
1288 # ldtests contains test-items with 3 items followed by 1 lists, 2 items
1289 # and 3 optional items:
1292 # 2:assembler options
1293 # 3:filenames of source files
1294 # 4:name of output file
1296 # 6:compiler flags (optional)
1297 # 7:language (optional)
1298 # 8:linker warning (optional)
1300 proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
1313 foreach testitem $ldtests {
1314 foreach target $targets_to_xfail {
1317 set testname [lindex $testitem 0]
1318 set ld_options [lindex $testitem 1]
1319 set as_options [lindex $testitem 2]
1320 set src_files [lindex $testitem 3]
1321 set binfile tmpdir/[lindex $testitem 4]
1322 set expfile [lindex $testitem 5]
1323 set cflags [lindex $testitem 6]
1324 set lang [lindex $testitem 7]
1325 set warning [lindex $testitem 8]
1329 # verbose -log "Testname is $testname"
1330 # verbose -log "ld_options is $ld_options"
1331 # verbose -log "as_options is $as_options"
1332 # verbose -log "src_files is $src_files"
1333 # verbose -log "binfile is $binfile"
1335 # Assemble each file in the test.
1336 foreach src_file $src_files {
1337 set fileroot "[file rootname [file tail $src_file]]"
1338 set objfile "tmpdir/$fileroot.o"
1339 lappend objfiles $objfile
1341 # We ignore warnings since some compilers may generate
1342 # incorrect section attributes and the assembler will warn
1344 if { [ string match "c++" $lang ] } {
1345 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1347 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1351 # We have to use $CC to build PIE and shared library.
1352 if { [ string match "c" $lang ] } {
1353 set link_proc ld_simple_link
1355 } elseif { [ string match "c++" $lang ] } {
1356 set link_proc ld_simple_link
1358 } elseif { [ string match "-shared" $ld_options ] \
1359 || [ string match "-pie" $ld_options ] } {
1360 set link_proc ld_simple_link
1363 set link_proc ld_link
1367 if { $binfile eq "tmpdir/" } {
1371 } elseif ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
1375 # Check if exec_output is expected.
1376 if { $warning != "" } then {
1377 verbose -log "returned with: <$exec_output>, expected: <$warning>"
1378 if { [regexp $warning $exec_output] } then {
1385 if { $failed == 0 } {
1386 send_log "Running: $binfile > $binfile.out\n"
1387 verbose "Running: $binfile > $binfile.out"
1388 catch "exec $binfile > $binfile.out" exec_output
1390 if ![string match "" $exec_output] then {
1391 send_log "$exec_output\n"
1392 verbose "$exec_output" 1
1395 send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
1396 verbose "diff $binfile.out $srcdir/$subdir/$expfile"
1397 catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
1398 set exec_output [prune_warnings $exec_output]
1400 if ![string match "" $exec_output] then {
1401 send_log "$exec_output\n"
1402 verbose "$exec_output" 1
1408 if { $failed != 0 } {
1417 # List contains test-items with 3 items followed by 2 lists, one item and
1418 # one optional item:
1420 # 1:ld or ar options
1422 # 3:filenames of source files
1423 # 4:action and options.
1424 # 5:name of output file
1425 # 6:language (optional)
1426 # 7:linker warnings (optional)
1429 # objdump: Apply objdump options on result. Compare with regex (last arg).
1430 # nm: Apply nm options on result. Compare with regex (last arg).
1431 # readelf: Apply readelf options on result. Compare with regex (last arg).
1433 proc run_cc_link_tests { ldtests } {
1448 if [board_info [target_info name] exists cflags] {
1449 set board_cflags " [board_info [target_info name] cflags]"
1454 foreach testitem $ldtests {
1455 set testname [lindex $testitem 0]
1456 set ldflags [lindex $testitem 1]
1457 set cflags [lindex $testitem 2]
1458 set src_files [lindex $testitem 3]
1459 set actions [lindex $testitem 4]
1460 set binfile tmpdir/[lindex $testitem 5]
1461 set lang [lindex $testitem 6]
1462 set warnings [lindex $testitem 7]
1467 #verbose -log "testname is $testname"
1468 #verbose -log "ldflags is $ldflags"
1469 #verbose -log "cflags is $cflags"
1470 #verbose -log "src_files is $src_files"
1471 #verbose -log "actions is $actions"
1472 #verbose -log "binfile is $binfile"
1473 #verbose -log "lang is $lang"
1474 #verbose -log "warnings is $warnings"
1476 # Compile each file in the test.
1477 foreach src_file $src_files {
1478 set fileroot "[file rootname [file tail $src_file]]"
1479 set objfile "tmpdir/$fileroot.o"
1480 lappend objfiles $objfile
1482 # We ignore warnings since some compilers may generate
1483 # incorrect section attributes and the assembler will warn
1485 if { [ string match "c++" $lang ] } {
1486 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1488 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1492 # Clear error and warning counts.
1495 if { [ string match "c++" $lang ] } {
1501 if { $binfile eq "tmpdir/" } {
1503 } elseif { [regexp ".*\\.a$" $binfile] } {
1504 if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } {
1509 if { ![ld_simple_link $cc_cmd $binfile "$board_cflags -L$srcdir/$subdir $ldflags $objfiles"] } {
1513 # Check if exec_output is expected.
1514 if { $warnings != "" } then {
1515 verbose -log "returned with: <$exec_output>, expected: <$warnings>"
1516 if { [regexp $warnings $exec_output] } then {
1523 if { $failed == 1 } {
1528 if { $failed == 0 } {
1529 foreach actionlist $actions {
1530 set action [lindex $actionlist 0]
1531 set progopts [lindex $actionlist 1]
1533 # There are actions where we run regexp_diff on the
1534 # output, and there are other actions (presumably).
1535 # Handling of the former look the same.
1539 { set dump_prog $objdump }
1541 { set dump_prog $nm }
1543 { set dump_prog $READELF }
1546 perror "Unrecognized action $action"
1552 if { $dump_prog != "" } {
1553 set dumpfile [lindex $actionlist 2]
1554 set binary $dump_prog
1556 # Ensure consistent sorting of symbols
1557 if {[info exists env(LC_ALL)]} {
1558 set old_lc_all $env(LC_ALL)
1561 set cmd "$binary $progopts $binfile > dump.out"
1563 catch "exec $cmd" comp_output
1564 if {[info exists old_lc_all]} {
1565 set env(LC_ALL) $old_lc_all
1569 set comp_output [prune_warnings $comp_output]
1571 if ![string match "" $comp_output] then {
1572 send_log "$comp_output\n"
1577 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1578 verbose "output is [file_contents "dump.out"]" 2
1586 if { $failed != 0 } {
1588 } elseif { $is_unresolved == 0 } {
1591 unresolved $testname
1597 # Returns true if --gc-sections is supported on the target.
1599 proc check_gc_sections_available { } {
1600 global gc_sections_available_saved
1603 if {![info exists gc_sections_available_saved]} {
1604 # Some targets don't support gc-sections despite whatever's
1605 # advertised by ld's options.
1606 if { [istarget arc-*-*]
1607 || [istarget d30v-*-*]
1608 || [istarget dlx-*-*]
1609 || [istarget i960-*-*]
1610 || [istarget pj*-*-*]
1611 || [istarget alpha-*-*]
1612 || [istarget hppa*64-*-*]
1613 || [istarget i370-*-*]
1614 || [istarget i860-*-*]
1615 || [istarget ia64-*-*]
1616 || [istarget mep-*-*]
1617 || [istarget mn10200-*-*] } {
1618 set gc_sections_available_saved 0
1622 # elf2flt uses -q (--emit-relocs), which is incompatible with
1624 if { [board_info target exists ldflags]
1625 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
1626 set gc_sections_available_saved 0
1630 # Check if the ld used by gcc supports --gc-sections.
1631 # FIXME: this test is useless since ld --help always says
1632 # --gc-sections is available
1633 set ld_output [remote_exec host $ld "--help"]
1634 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
1635 set gc_sections_available_saved 1
1637 set gc_sections_available_saved 0
1640 return $gc_sections_available_saved
1643 # Returns true if -shared is supported on the target
1644 # Only used and accurate for ELF targets at the moment
1646 proc check_shared_lib_support { } {
1647 if {![istarget aarch64*-*-elf]
1648 && ![istarget arc-*-*]
1649 && ![istarget arm*-*-elf]
1650 && ![istarget avr-*-*]
1651 && ![istarget cr16-*-*]
1652 && ![istarget cris*-*-elf]
1653 && ![istarget crx-*-*]
1654 && ![istarget d10v-*-*]
1655 && ![istarget d30v-*-*]
1656 && ![istarget dlx-*-*]
1657 && ![istarget epiphany-*-*]
1658 && ![istarget fr30-*-*]
1659 && ![istarget frv-*-*]
1660 && ![istarget h8300-*-*]
1661 && ![istarget i860-*-*]
1662 && ![istarget i960-*-*]
1663 && ![istarget ip2k-*-*]
1664 && ![istarget iq2000-*-*]
1665 && ![istarget lm32-*-*]
1666 && ![istarget m32c-*-*]
1667 && ![istarget m32r-*-*]
1668 && ![istarget m6811-*-*]
1669 && ![istarget m6812-*-*]
1670 && ![istarget m68hc1*-*-*]
1671 && ![istarget mcore*-*-*]
1672 && ![istarget mep-*-*]
1673 && ![istarget microblaze-*-*]
1674 && ![istarget mips*-*-elf]
1675 && ![istarget mn10200-*-*]
1676 && ![istarget moxie-*-*]
1677 && ![istarget msp430-*-*]
1678 && ![istarget mt-*-*]
1679 && ![istarget nds32*-*-*]
1680 && ![istarget or1k*-*-*]
1681 && ![istarget pj-*-*]
1682 && ![istarget rl78-*-*]
1683 && ![istarget rx-*-*]
1684 && ![istarget spu-*-*]
1685 && ![istarget v850*-*-*]
1686 && ![istarget visium-*-*]
1687 && ![istarget xstormy16-*-*]
1688 && ![istarget *-*-irix*]
1689 && ![istarget *-*-rtems] } {
1695 # Returns true if the target ld supports the plugin API.
1696 proc check_plugin_api_available { } {
1697 global plugin_api_available_saved
1699 if {![info exists plugin_api_available_saved]} {
1700 # Check if the ld used by gcc supports --plugin.
1701 set ld_output [remote_exec host $ld "--help"]
1702 if { [ string first "-plugin PLUGIN" $ld_output ] >= 0 } {
1703 set plugin_api_available_saved 1
1705 set plugin_api_available_saved 0
1708 return $plugin_api_available_saved
1711 # Sets ld_sysroot to the current sysroot (empty if not supported) and
1712 # returns true if the target ld supports sysroot.
1713 proc check_sysroot_available { } {
1714 global ld_sysroot_available_saved ld ld_sysroot
1715 if {![info exists ld_sysroot_available_saved]} {
1716 # Check if ld supports --sysroot *other* than empty.
1717 set ld_sysroot [string trimright [lindex [remote_exec host $ld "--print-sysroot"] 1]]
1718 if { $ld_sysroot == "" } {
1719 set ld_sysroot_available_saved 0
1721 set ld_sysroot_available_saved 1
1724 return $ld_sysroot_available_saved
1727 # Returns true if the target compiler supports LTO
1728 proc check_lto_available { } {
1729 global lto_available_saved
1732 if {![info exists lto_available_saved]} {
1733 if { [which $CC] == 0 } {
1734 set lto_available_saved 0
1737 # Check if gcc supports -flto -fuse-linker-plugin
1739 if [board_info [target_info name] exists cflags] {
1740 append flags " [board_info [target_info name] cflags]"
1742 if [board_info [target_info name] exists ldflags] {
1743 append flags " [board_info [target_info name] ldflags]"
1746 set basename "tmpdir/lto[pid]"
1747 set src ${basename}.c
1748 set output ${basename}.out
1749 set f [open $src "w"]
1750 puts $f "int main() { return 0; }"
1752 remote_download host $src
1753 set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
1754 remote_file host delete $src
1755 remote_file host delete $output
1758 return $lto_available_saved
1761 # Returns true if the target compiler supports LTO -ffat-lto-objects
1762 proc check_lto_fat_available { } {
1763 global lto_fat_available_saved
1766 if {![info exists lto_fat_available_saved]} {
1767 if { [which $CC] == 0 } {
1768 set lto_fat_available_saved 0
1771 # Check if gcc supports -flto -fuse-linker-plugin
1773 if [board_info [target_info name] exists cflags] {
1774 append flags " [board_info [target_info name] cflags]"
1776 if [board_info [target_info name] exists ldflags] {
1777 append flags " [board_info [target_info name] ldflags]"
1780 set basename "tmpdir/lto[pid]"
1781 set src ${basename}.c
1782 set output ${basename}.out
1783 set f [open $src "w"]
1784 puts $f "int main() { return 0; }"
1786 remote_download host $src
1787 set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
1788 remote_file host delete $src
1789 remote_file host delete $output
1792 return $lto_fat_available_saved
1795 # Returns true if the target compiler supports LTO and -shared
1796 proc check_lto_shared_available { } {
1797 global lto_shared_available_saved
1800 if {![info exists lto_shared_available_saved]} {
1801 if { [which $CC] == 0 } {
1802 set lto_shared_available_saved 0
1805 # Check if gcc supports -flto -fuse-linker-plugin -shared
1807 if [board_info [target_info name] exists cflags] {
1808 append flags " [board_info [target_info name] cflags]"
1810 if [board_info [target_info name] exists ldflags] {
1811 append flags " [board_info [target_info name] ldflags]"
1814 set basename "tmpdir/lto_shared[pid]"
1815 set src ${basename}.c
1816 set output ${basename}.so
1817 set f [open $src "w"]
1820 remote_download host $src
1821 set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
1822 remote_file host delete $src
1823 remote_file host delete $output
1826 return $lto_shared_available_saved
1829 # Check if the assembler supports CFI statements.
1831 proc check_as_cfi { } {
1832 global check_as_cfi_result
1834 if [info exists check_as_cfi_result] {
1835 return $check_as_cfi_result
1837 set as_file "tmpdir/check_as_cfi.s"
1838 set as_fh [open $as_file w 0666]
1839 puts $as_fh "# Generated file. DO NOT EDIT"
1840 puts $as_fh "\t.cfi_startproc"
1841 puts $as_fh "\t.cfi_endproc"
1843 remote_download host $as_file
1844 verbose -log "Checking CFI support:"
1845 rename "perror" "check_as_cfi_perror"
1846 proc perror { args } { }
1847 set success [ld_assemble $as $as_file "/dev/null"]
1849 rename "check_as_cfi_perror" "perror"
1850 #remote_file host delete $as_file
1851 set check_as_cfi_result $success
1855 # Returns true if IFUNC works.
1857 proc check_ifunc_available { } {
1858 global ifunc_available_saved
1861 if {![info exists ifunc_available_saved]} {
1862 if { [which $CC] == 0 } {
1863 set ifunc_available_saved 0
1866 # Check if gcc supports -flto -fuse-linker-plugin
1868 if [board_info [target_info name] exists cflags] {
1869 append flags " [board_info [target_info name] cflags]"
1871 if [board_info [target_info name] exists ldflags] {
1872 append flags " [board_info [target_info name] ldflags]"
1875 set basename "tmpdir/ifunc[pid]"
1876 set src ${basename}.c
1877 set output ${basename}.out
1878 set f [open $src "w"]
1879 puts $f "extern int library_func2 (void);"
1880 puts $f "int main (void)"
1882 puts $f " if (library_func2 () != 2) __builtin_abort ();"
1883 puts $f " return 0; "
1885 puts $f "static int library_func1 (void) {return 2; }"
1886 puts $f "void *foo (void) __asm__ (\"library_func2\");"
1887 puts $f "void *foo (void) { return library_func1; }"
1888 puts $f "__asm__(\".type library_func2, %gnu_indirect_function\");"
1890 remote_download host $src
1891 set ifunc_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
1892 if { $ifunc_available_saved == 1 } {
1893 set ifunc_available_saved [run_host_cmd_yesno "$output" ""]
1895 remote_file host delete $src
1896 remote_file host delete $output
1899 return $ifunc_available_saved
1902 # Provide virtual target "cfi" for targets supporting CFI.
1904 rename "istarget" "istarget_ld"
1905 proc istarget { target } {
1906 if {$target == "cfi"} {
1907 return [check_as_cfi]
1909 return [istarget_ld $target]