1 # Support routines for LD testsuite.
2 # Copyright (C) 1994-2016 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 } {
34 if {![info exists CC]} {
40 set state [remote_exec host $CC --version]
41 set tmp "[lindex $state 1]\n"
42 # Look for (eg) 4.6.1 in the version output.
43 set ver_re "\[^\\.0-9\]+(\[1-9\]\[0-9\]*)\\.(\[0-9\]+)(?:\\.\[0-9\]+)?"
44 regexp $ver_re $tmp fred maj min
45 verbose "gcc version: $tmp"
46 if { ![info exists maj] || ![info exists min] } then {
47 perror "can't decipher gcc version number, fix the framework!"
50 verbose "major gcc version is $maj, want at least $major"
51 if { $maj == $major } then {
52 verbose "minor gcc version is $min, want at least $minor"
53 return [expr $min >= $minor]
55 return [expr $maj > $major]
59 # Extract and print the version number of ld.
61 proc default_ld_version { ld } {
64 if { ![is_remote host] && [which $ld] == 0 } then {
65 perror "$ld does not exist"
69 remote_exec host "$ld --version" "" "/dev/null" "ld.version"
70 remote_upload host "ld.version"
71 set tmp [prune_warnings [file_contents "ld.version"]]
72 remote_file build delete "ld.version"
73 remote_file host delete "ld.version"
75 regexp "\[^\n\]* (cygnus-|)(\[-0-9.a-zA-Z-\]+)\[\r\n\].*" $tmp version cyg number
76 if [info exists number] then {
77 clone_output "$ld $number\n"
81 proc run_host_cmd { prog command } {
86 if { ![is_remote host] && [which "$prog"] == 0 } then {
87 perror "$prog does not exist"
91 # If we are compiling with gcc, we want to add gcc_B_opt and
92 # ld_L_opt to flags. However, if $prog already has -B options,
93 # which might be the case when running gcc out of a build
94 # directory, we want our -B options to come first.
96 set gccparm [string first " " $gccexe]
98 if { $gccparm > 0 } then {
99 set gccflags [string range $gccexe $gccparm end]
100 set gccexe [string range $gccexe 0 $gccparm]
103 set gccexe [string replace $gccexe 0 [string last "/" $gccexe] ""]
104 if {[string match "*cc*" $gccexe] || [string match "*++*" $gccexe]} then {
105 set gccflags "$gcc_B_opt $gccflags $ld_L_opt"
108 verbose -log "$prog $gccflags $command"
109 set status [remote_exec host [concat sh -c [list "$prog $gccflags $command 2>&1"]] "" "/dev/null" "ld.tmp"]
110 remote_upload host "ld.tmp"
111 set link_output [file_contents "ld.tmp"]
112 regsub "\n$" $link_output "" link_output
113 if { [lindex $status 0] != 0 && [string match "" $link_output] } then {
114 append link_output "child process exited abnormally"
116 remote_file build delete ld.tmp
117 remote_file host delete ld.tmp
119 if [string match "" $link_output] then {
123 verbose -log "$link_output"
124 return "$link_output"
127 proc run_host_cmd_yesno { prog command } {
129 global errcnt warncnt
131 set exec_output [prune_warnings [run_host_cmd "$prog" "$command"]]
132 # Ignore error and warning.
135 if [string match "" $exec_output] then {
141 # Link an object using relocation.
143 proc default_ld_relocate { ld target objects } {
146 remote_file host delete $target
147 return [run_host_cmd_yesno "$ld" "$HOSTING_EMU -o $target -r $objects"]
150 # Check to see if ld is being invoked with a non-endian output format
152 proc is_endian_output_format { object_flags } {
154 if {[string match "*-oformat binary*" $object_flags] || \
155 [string match "*-oformat ieee*" $object_flags] || \
156 [string match "*-oformat ihex*" $object_flags] || \
157 [string match "*-oformat netbsd-core*" $object_flags] || \
158 [string match "*-oformat srec*" $object_flags] || \
159 [string match "*-oformat tekhex*" $object_flags] || \
160 [string match "*-oformat trad-core*" $object_flags] } then {
167 # Look for big-endian or little-endian switches in the multlib
168 # options and translate these into a -EB or -EL switch. Note
169 # we cannot rely upon proc process_multilib_options to do this
170 # for us because for some targets the compiler does not support
171 # -EB/-EL but it does support -mbig-endian/-mlittle-endian, and
172 # the site.exp file will include the switch "-mbig-endian"
173 # (rather than "big-endian") which is not detected by proc
174 # process_multilib_options.
176 proc big_or_little_endian {} {
178 if [board_info [target_info name] exists multilib_flags] {
179 set tmp_flags " [board_info [target_info name] multilib_flags]"
181 foreach x $tmp_flags {
183 {*big*endian eb EB -eb -EB -mb -meb} {
187 {*little*endian el EL -el -EL -ml -mel} {
199 # Link a program using ld.
201 proc default_ld_link { ld target objects } {
212 if { [ string match "* -pie *" $objects ] } {
213 set objs "$HOSTING_SCRT0 $objects"
214 set libs "$LIBS $HOSTING_SLIBS"
216 set objs "$HOSTING_CRT0 $objects"
217 set libs "$LIBS $HOSTING_LIBS"
220 if [is_endian_output_format $objects] then {
221 set flags [big_or_little_endian]
226 remote_file host delete $target
228 return [run_host_cmd_yesno "$ld" "$HOSTING_EMU $flags -o $target $objs $libs"]
231 # Link a program using ld, without including any libraries.
233 proc default_ld_simple_link { ld target objects } {
238 if [is_endian_output_format $objects] then {
239 set flags [big_or_little_endian]
242 remote_file host delete $target
243 set exec_output [run_host_cmd "$ld" "$flags -o $target $objects"]
244 set exec_output [prune_warnings $exec_output]
246 # We don't care if we get a warning about a non-existent start
247 # symbol, since the default linker script might use ENTRY.
248 regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
250 return [string match "" $exec_output]
253 # Compile an object using cc.
255 proc default_ld_compile { cc source object } {
264 if {[llength $cc_prog] > 1} then {
265 set cc_prog [lindex $cc_prog 0]
267 if {![is_remote host] && [which $cc_prog] == 0} then {
268 perror "$cc_prog does not exist"
272 remote_file build delete "$object"
273 remote_file host delete "$object"
275 set flags "$gcc_B_opt -I$srcdir/$subdir"
277 # If we are compiling with gcc, we want to add gcc_B_opt to flags.
278 # However, if $prog already has -B options, which might be the
279 # case when running gcc out of a build directory, we want our -B
280 # options to come first.
282 set ccparm [string first " " $cc]
284 if { $ccparm > 0 } then {
285 set ccflags [string range $cc $ccparm end]
286 set ccexe [string range $cc 0 $ccparm]
290 set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""]
291 if {[string match "*++*" $ccexe]} {
292 append flags " $CXXFLAGS"
294 append flags " $CFLAGS"
297 if [board_info [target_info name] exists cflags] {
298 append flags " [board_info [target_info name] cflags]"
301 if [board_info [target_info name] exists multilib_flags] {
302 append flags " [board_info [target_info name] multilib_flags]"
305 set cmd "$cc $flags $ccflags -c $source -o $object"
308 set status [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
309 remote_upload host "ld.tmp"
310 set exec_output [file_contents "ld.tmp"]
311 remote_file build delete "ld.tmp"
312 remote_file host delete "ld.tmp"
313 set exec_output [prune_warnings $exec_output]
314 if [string match "" $exec_output] then {
315 if {![file exists $object]} then {
316 regexp ".*/(\[^/\]*)$" $source all dobj
317 regsub "\\.c" $dobj ".o" realobj
318 verbose "looking for $realobj"
319 if {[remote_file host exists $realobj]} then {
320 verbose -log "mv $realobj $object"
321 remote_upload "$realobj" "$object"
323 perror "$object not found after compilation"
329 verbose -log "$exec_output"
330 perror "$source: compilation failed"
337 proc default_ld_assemble { as in_flags source object } {
343 if ![info exists ASFLAGS] { set ASFLAGS "" }
345 set flags "[big_or_little_endian] -I$srcdir/$subdir"
346 set exec_output [run_host_cmd "$as" "$flags $in_flags $ASFLAGS -o $object $source"]
347 set exec_output [prune_warnings $exec_output]
348 if [string match "" $exec_output] then {
351 perror "$source: assembly failed"
356 # Run nm on a file, putting the result in the array nm_output.
358 proc default_ld_nm { nm nmflags object } {
363 if {[info exists nm_output]} {
367 if ![info exists NMFLAGS] { set NMFLAGS "" }
369 # Ensure consistent sorting of symbols
370 if {[info exists env(LC_ALL)]} {
371 set old_lc_all $env(LC_ALL)
375 verbose -log "$nm $NMFLAGS $nmflags $object >tmpdir/nm.out"
377 set status [remote_exec host [concat sh -c [list "$nm $NMFLAGS $nmflags $object 2>ld.stderr"]] "" "/dev/null" "tmpdir/nm.out"]
378 if {[info exists old_lc_all]} {
379 set env(LC_ALL) $old_lc_all
383 remote_upload host "ld.stderr"
384 remote_upload host "tmpdir/nm.out" "tmpdir/nm.out"
385 set exec_output [prune_warnings [file_contents "ld.stderr"]]
386 remote_file host delete "ld.stderr"
387 remote_file build delete "ld.stderr"
388 if [string match "" $exec_output] then {
389 set file [open tmpdir/nm.out r]
390 while { [gets $file line] != -1 } {
392 if [regexp "^(\[0-9a-fA-F\]+) \[a-zA-Z0-9\] \\.*(.+)$" $line whole value name] {
393 set name [string trimleft $name "_"]
394 verbose "Setting nm_output($name) to 0x$value" 2
395 set nm_output($name) 0x$value
401 verbose -log "$exec_output"
402 perror "$object: nm failed"
407 # Define various symbols needed when not linking against all
409 proc ld_simple_link_defsyms {} {
411 set flags "--defsym __stack_chk_fail=0"
413 # ARM targets call __gccmain
414 if {[istarget arm*-*-*]} {
415 append flags " --defsym __gccmain=0"
418 # Windows targets need __main, some prefixed with underscore.
419 if {[istarget *-*-cygwin* ] || [istarget *-*-mingw*]} {
420 append flags " --defsym __main=0 --defsym ___main=0"
423 # PowerPC EABI code calls __eabi.
424 if {[istarget powerpc*-*-eabi*] || [istarget powerpc*-*-rtems*]} {
425 append flags " --defsym __eabi=0"
428 # mn10200 code calls __truncsipsi2_d0_d2.
429 if {[istarget mn10200*-*-*]} then {
430 append flags " --defsym __truncsipsi2_d0_d2=0"
433 # m6811/m6812 code has references to soft registers.
434 if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
435 append flags " --defsym _.frame=0 --defsym _.d1=0 --defsym _.d2=0"
436 append flags " --defsym _.d3=0 --defsym _.d4=0"
437 append flags " --defsym _.tmp=0 --defsym _.xy=0 --defsym _.z=0"
440 # Some OpenBSD targets have ProPolice and reference __guard and
441 # __stack_smash_handler.
442 if [istarget *-*-openbsd*] {
443 append flags " --defsym __guard=0"
444 append flags " --defsym __stack_smash_handler=0"
450 # run_dump_test FILE (optional:) EXTRA_OPTIONS
451 # Copied from gas testsuite, tweaked and further extended.
453 # Assemble a .s file, then run some utility on it and check the output.
455 # There should be an assembly language file named FILE.s in the test
456 # suite directory, and a pattern file called FILE.d. `run_dump_test'
457 # will assemble FILE.s, run some tool like `objdump', `objcopy', or
458 # `nm' on the .o file to produce textual output, and then analyze that
459 # with regexps. The FILE.d file specifies what program to run, and
460 # what to expect in its output.
462 # The FILE.d file begins with zero or more option lines, which specify
463 # flags to pass to the assembler, the program to run to dump the
464 # assembler's output, and the options it wants. The option lines have
469 # OPTION is the name of some option, like "name" or "objdump", and
470 # VALUE is OPTION's value. The valid options are described below.
471 # Whitespace is ignored everywhere, except within VALUE. The option
472 # list ends with the first line that doesn't match the above syntax
473 # (hmm, not great for error detection).
475 # The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
476 # two-element lists. The first element of each is an option name, and
477 # the second additional arguments to be added on to the end of the
478 # option list as given in FILE.d. (If omitted, no additional options
481 # The interesting options are:
484 # The name of this test, passed to DejaGNU's `pass' and `fail'
485 # commands. If omitted, this defaults to FILE, the root of the
486 # .s and .d files' names.
489 # When assembling, pass FLAGS to the assembler.
490 # If assembling several files, you can pass different assembler
491 # options in the "source" directives. See below.
494 # Link assembled files using FLAGS, in the order of the "source"
495 # directives, when using multiple files.
497 # ld_after_inputfiles: FLAGS
498 # Similar to "ld", but put after all input files.
500 # objcopy_objects: FLAGS
501 # Run objcopy with the specified flags after assembling any source
502 # that has the special marker RUN_OBJCOPY in the source specific
505 # objcopy_linked_file: FLAGS
506 # Run objcopy on the linked file with the specified flags.
507 # This lets you transform the linked file using objcopy, before the
508 # result is analyzed by an analyzer program specified below (which
509 # may in turn *also* be objcopy).
512 # The name of the program to run to analyze the .o file produced
513 # by the assembler or the linker output. This can be omitted;
514 # run_dump_test will guess which program to run by seeing which of
515 # the flags options below is present.
521 # Use the specified program to analyze the assembler or linker
522 # output file, and pass it FLAGS, in addition to the output name.
523 # Note that they are run with LC_ALL=C in the environment to give
524 # consistent sorting of symbols.
526 # source: SOURCE [FLAGS]
527 # Assemble the file SOURCE.s using the flags in the "as" directive
528 # and the (optional) FLAGS. If omitted, the source defaults to
530 # This is useful if several .d files want to share a .s file.
531 # More than one "source" directive can be given, which is useful
532 # when testing linking.
535 # Match against DUMP.d. If omitted, this defaults to FILE.d. This
536 # is useful if several .d files differ by options only. Options are
537 # always read from FILE.d.
540 # The test is expected to fail on TARGET. This may occur more than
544 # Only run the test for TARGET. This may occur more than once; the
545 # target being tested must match at least one. You may provide target
546 # name "cfi" for any target supporting the CFI statements.
549 # Do not run the test for TARGET. This may occur more than once;
550 # the target being tested must not match any of them.
553 # An error with message matching REGEX must be emitted for the test
554 # to pass. The PROG, readelf, objdump, nm and objcopy options have
555 # no meaning and need not be supplied if this is present. Multiple
556 # "error" directives append to the expected linker error message.
559 # Means the same as 'error', except the regular expression lines
560 # are contains in FILE.
563 # Expect a linker warning matching REGEX. It is an error to issue
564 # both "error" and "warning". Multiple "warning" directives
565 # append to the expected linker warning message.
567 # warning_output: FILE
568 # Means the same as 'warning', except the regular expression
569 # lines are contains in FILE.
572 # Adding this option will cause the linker to generate a linker
573 # map file, using the -Map=MAPFILE command line option. If
574 # there is no -Map=MAPFILE in the 'ld: FLAGS' then one will be
575 # added to the linker command line. The contents of the
576 # generated MAPFILE are then compared against the regexp lines
577 # in FILE using `regexp_diff' (see below for details).
579 # Each option may occur at most once unless otherwise mentioned.
581 # After the option lines come regexp lines. `run_dump_test' calls
582 # `regexp_diff' to compare the output of the dumping tool against the
583 # regexps in FILE.d. `regexp_diff' is defined in binutils-common.exp;
584 # see further comments there.
586 proc run_dump_test { name {extra_options {}} } {
588 global OBJDUMP NM AS OBJCOPY READELF LD
589 global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
590 global host_triplet runtests
592 global ld_elf_shared_opt
594 if { [is_elf_format] && [check_shared_lib_support] } {
595 set ld_extra_opt "$ld_elf_shared_opt"
600 if [string match "*/*" $name] {
602 set name [file tail $name]
604 set file "$srcdir/$subdir/$name"
607 if ![runtest_file_p $runtests $name] then {
611 set opt_array [slurp_options "${file}.d"]
612 if { $opt_array == -1 } {
613 perror "error reading options from $file.d"
614 unresolved $subdir/$name
617 set dumpfile tmpdir/dump.out
622 set opts(ld_after_inputfiles) {}
625 set opts(notarget) {}
636 set opts(error_output) {}
637 set opts(warning_output) {}
638 set opts(objcopy_linked_file) {}
639 set opts(objcopy_objects) {}
642 foreach i $opt_array {
643 set opt_name [lindex $i 0]
644 set opt_val [lindex $i 1]
645 if ![info exists opts($opt_name)] {
646 perror "unknown option $opt_name in file $file.d"
647 unresolved $subdir/$name
651 switch -- $opt_name {
658 # Move any source-specific as-flags to a separate list to
659 # simplify processing.
660 if { [llength $opt_val] > 1 } {
661 lappend asflags [lrange $opt_val 1 end]
662 set opt_val [lindex $opt_val 0]
668 if [string length $opts($opt_name)] {
669 perror "option $opt_name multiply set in $file.d"
670 unresolved $subdir/$name
674 # A single "# ld:" with no options should do the right thing.
675 if { $opt_name == "ld" } {
678 # Likewise objcopy_linked_file.
679 if { $opt_name == "objcopy_linked_file" } {
684 if { $opt_name == "as" || $opt_name == "ld" } {
685 set opt_val [subst $opt_val]
688 # Append differently whether it's a message (without space) or
689 # an option or list (with space).
690 switch -- $opt_name {
693 append opts($opt_name) $opt_val
696 set opts($opt_name) [concat $opts($opt_name) $opt_val]
701 foreach i $extra_options {
702 set opt_name [lindex $i 0]
703 set opt_val [lindex $i 1]
704 if ![info exists opts($opt_name)] {
705 perror "unknown option $opt_name given in extra_opts"
706 unresolved $subdir/$name
709 # Add extra option to end of existing option, adding space
711 if { ![regexp "warning|error" $opt_name]
712 && [string length $opts($opt_name)] } {
713 append opts($opt_name) " "
715 append opts($opt_name) $opt_val
718 foreach opt { as ld } {
719 regsub {\[big_or_little_endian\]} $opts($opt) \
720 [big_or_little_endian] opts($opt)
723 # Decide early whether we should run the test for this target.
724 if { [llength $opts(target)] > 0 } {
726 foreach targ $opts(target) {
727 if [istarget $targ] {
732 if { $targmatch == 0 } {
736 foreach targ $opts(notarget) {
737 if [istarget $targ] {
743 # It's meaningless to require an output-testing method when we
745 if { $opts(error) == "" && $opts(error_output) == "" } {
746 if {$opts(PROG) != ""} {
747 switch -- $opts(PROG) {
748 objdump { set program objdump }
749 nm { set program nm }
750 objcopy { set program objcopy }
751 readelf { set program readelf }
753 { perror "unrecognized program option $opts(PROG) in $file.d"
754 unresolved $subdir/$name
758 # Guess which program to run, by seeing which option was specified.
759 foreach p {objdump objcopy nm readelf} {
760 if {$opts($p) != ""} {
761 if {$program != ""} {
762 perror "ambiguous dump program in $file.d"
763 unresolved $subdir/$name
771 if { $program == "" \
772 && $opts(map) == "" \
773 && $opts(warning) == "" \
774 && $opts(warning_output) == "" \
775 && $opts(error) == "" \
776 && $opts(error_output) == "" } {
777 perror "dump program unspecified in $file.d"
778 unresolved $subdir/$name
783 if { $opts(name) == "" } {
784 set testname "$subdir/$name"
786 set testname $opts(name)
789 if { $opts(source) == "" } {
790 set sourcefiles [list ${file}.s]
791 set asflags [list ""]
794 foreach sf $opts(source) {
795 if { [string match "/*" $sf] } {
796 lappend sourcefiles "$sf"
798 lappend sourcefiles "$srcdir/$subdir/$sf"
803 if { $opts(dump) == "" } {
806 set dfile $srcdir/$subdir/$opts(dump)
809 # Time to setup xfailures.
810 foreach targ $opts(xfail) {
814 # Assemble each file.
816 for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
817 set sourcefile [lindex $sourcefiles $i]
818 set sourceasflags [lindex $asflags $i]
819 set run_objcopy_objects 0
821 if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
822 set run_objcopy_objects 1
824 regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
826 set objfile "tmpdir/dump$i.o"
827 catch "exec rm -f $objfile" exec_output
828 lappend objfiles $objfile
829 set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
832 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
833 remote_upload host "ld.tmp"
834 set comp_output [prune_warnings [file_contents "ld.tmp"]]
835 remote_file host delete "ld.tmp"
836 remote_file build delete "ld.tmp"
838 if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then {
839 send_log "$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>"
849 if { $run_objcopy_objects } {
850 set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
853 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
854 "" "/dev/null" "objcopy.tmp"]
855 remote_upload host "objcopy.tmp"
856 set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
857 remote_file host delete "objcopy.tmp"
858 remote_file build delete "objcopy.tmp"
860 if { [lindex $cmdret 0] != 0 \
861 || ![string match "" $comp_output] } {
862 send_log "$comp_output\n"
863 verbose "$comp_output" 3
865 set exitstat "succeeded"
866 if { $cmdret != 0 } { set exitstat "failed" }
867 verbose -log "$exitstat with: <$comp_output>"
874 if { (($opts(warning) != "") && ($opts(error) != "")) \
875 || (($opts(warning) != "") && ($opts(error_output) != "")) \
876 || (($opts(warning) != "") && ($opts(warning_output) != "")) \
877 || (($opts(error) != "") && ($opts(warning_output) != "")) \
878 || (($opts(error) != "") && ($opts(error_output) != "")) \
879 || (($opts(warning_output) != "") && ($opts(error_output) != "")) } {
880 perror "$testname: bad mix of warning, error, warning_output, and error_output test-directives"
885 set check_ld(source) ""
886 set check_ld(terminal) 0
887 if { $opts(error) != "" \
888 || $opts(warning) != "" \
889 || $opts(error_output) != "" \
890 || $opts(warning_output) != "" } {
892 if { $opts(error) != "" || $opts(error_output) != "" } {
893 set check_ld(terminal) 1
895 set check_ld(terminal) 0
898 if { $opts(error) != "" || $opts(warning) != "" } {
899 set check_ld(source) "regex"
900 if { $opts(error) != "" } {
901 set check_ld(regex) $opts(error)
903 set check_ld(regex) $opts(warning)
906 set check_ld(source) "file"
907 if { $opts(error_output) != "" } {
908 set check_ld(file) $opts(error_output)
910 set check_ld(file) $opts(warning_output)
915 # Perhaps link the file(s).
917 set objfile "tmpdir/dump"
918 catch "exec rm -f $objfile" exec_output
920 # Add -L$srcdir/$subdir so that the linker command can use
921 # linker scripts in the source directory.
922 set cmd "$LD $ld_extra_opt $LDFLAGS -L$srcdir/$subdir \
923 $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)"
925 # If needed then check for, or add a -Map option.
927 if { $opts(map) != "" } then {
928 if { [regexp -- "-Map=(\[^ \]+)" $cmd all mapfile] } then {
929 # Found existing mapfile option
930 verbose -log "Existing mapfile '$mapfile' found"
933 set mapfile "tmpdir/dump.map"
934 verbose -log "Adding mapfile '$mapfile'"
935 set cmd "$cmd -Map=$mapfile"
940 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
941 remote_upload host "ld.tmp"
942 set comp_output [file_contents "ld.tmp"]
943 remote_file host delete "ld.tmp"
944 remote_file build delete "ld.tmp"
945 set cmdret [lindex $cmdret 0]
947 if { $cmdret == 0 && $run_objcopy } {
949 set objfile "tmpdir/dump1"
950 remote_file host delete $objfile
952 # Note that we don't use OBJCOPYFLAGS here; any flags must be
953 # explicitly specified.
954 set cmd "$OBJCOPY $opts(objcopy_linked_file) $infile $objfile"
957 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
958 remote_upload host "ld.tmp"
959 append comp_output [file_contents "ld.tmp"]
960 remote_file host delete "ld.tmp"
961 remote_file build delete "ld.tmp"
962 set cmdret [lindex $cmdret 0]
965 regsub "\n$" $comp_output "" comp_output
966 if { $cmdret != 0 || $comp_output != "" || $check_ld(source) != "" } then {
967 set exitstat "succeeded"
968 if { $cmdret != 0 } { set exitstat "failed" }
970 if { $check_ld(source) == "regexp" } {
971 verbose -log "$exitstat with: <$comp_output>, expected: <$check_ld(regex)>"
972 } elseif { $check_ld(source) == "file" } {
973 verbose -log "$exitstat with: <$comp_output>, expected in file $check_ld(file)"
974 set_file_contents "tmpdir/ld.messages" "$comp_output"
976 verbose -log "$exitstat with: <$comp_output>, no expected output"
978 send_log "$comp_output\n"
979 verbose "$comp_output" 3
981 if { (($check_ld(source) == "") == ($comp_output == "")) \
982 && (($cmdret == 0) == ($check_ld(terminal) == 0)) \
983 && ((($check_ld(source) == "regex") \
984 && ($check_ld(regex) == "") == ($comp_output == "") \
985 && [regexp $check_ld(regex) $comp_output]) \
986 || (($check_ld(source) == "file") \
987 && (![regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$check_ld(file)"]))) } {
988 # We have the expected output from ld.
989 if { $check_ld(terminal) || $program == "" } {
999 if { $opts(map) != "" } then {
1000 # Check the map file matches.
1001 set map_pattern_file $srcdir/$subdir/$opts(map)
1002 verbose -log "Compare '$mapfile' against '$map_pattern_file'"
1003 if { [regexp_diff $mapfile $map_pattern_file] } then {
1004 fail "$testname (map file check)"
1006 pass "$testname (map file check)"
1009 if { $program == "" } then {
1014 set objfile "tmpdir/dump0.o"
1017 # We must not have expected failure if we get here.
1018 if { $opts(error) != "" } {
1023 set progopts1 $opts($program)
1024 eval set progopts \$[string toupper $program]FLAGS
1025 eval set binary \$[string toupper $program]
1027 if { ![is_remote host] && [which $binary] == 0 } {
1032 if { $progopts1 == "" } { set $progopts1 "-r" }
1033 verbose "running $binary $progopts $progopts1" 3
1035 # Objcopy, unlike the other two, won't send its output to stdout,
1036 # so we have to run it specially.
1037 set cmd "$binary $progopts $progopts1 $objfile > $dumpfile"
1038 if { $program == "objcopy" } {
1039 set cmd "$binary $progopts $progopts1 $objfile $dumpfile"
1042 # Ensure consistent sorting of symbols
1043 if {[info exists env(LC_ALL)]} {
1044 set old_lc_all $env(LC_ALL)
1048 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"]
1049 set cmdret [lindex $cmdret 0]
1050 remote_upload host "ld.tmp"
1051 set comp_output [prune_warnings [file_contents "ld.tmp"]]
1052 remote_file host delete "ld.tmp"
1053 remote_file build delete "ld.tmp"
1054 if {[info exists old_lc_all]} {
1055 set env(LC_ALL) $old_lc_all
1059 if { $cmdret != 0 || $comp_output != "" } {
1060 send_log "exited abnormally with $cmdret, output:$comp_output\n"
1065 if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 }
1066 if { [regexp_diff $dumpfile "${dfile}"] } then {
1068 if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
1075 proc slurp_options { file } {
1076 # If options_regsub(foo) is set to {a b}, then the contents of a
1077 # "#foo:" line will have regsub -all applied to replace a with b.
1078 global options_regsub
1080 if [catch { set f [open $file r] } x] {
1081 #perror "couldn't open `$file': $x"
1086 # whitespace expression
1089 # whitespace is ignored anywhere except within the options list;
1090 # option names are alphabetic plus underscore only.
1091 set pat "^#${ws}(\[a-zA-Z_\]*)$ws:${ws}(.*)$ws\$"
1092 while { [gets $f line] != -1 } {
1093 set line [string trim $line]
1094 # Whitespace here is space-tab.
1095 if [regexp $pat $line xxx opt_name opt_val] {
1097 if [info exists options_regsub($opt_name)] {
1098 set subst $options_regsub($opt_name)
1099 regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
1102 lappend opt_array [list $opt_name $opt_val]
1111 proc file_contents { filename } {
1112 set file [open $filename r]
1113 set contents [read $file]
1118 proc set_file_contents { filename contents } {
1119 set file [open $filename w]
1120 puts $file "$contents"
1124 # Create an archive using ar
1126 proc ar_simple_create { ar aropts target objects } {
1127 remote_file host delete $target
1129 set exec_output [run_host_cmd "$ar" "-rc $aropts $target $objects"]
1130 set exec_output [prune_warnings $exec_output]
1132 if [string match "" $exec_output] then {
1133 send_log "$exec_output\n"
1140 # List contains test-items with 3 items followed by 2 lists, one item and
1141 # one optional item:
1143 # 1:ld/ar leading options, placed before object files
1144 # 2:ld/ar trailing options, placed after object files
1145 # 3:assembler options
1146 # 4:filenames of assembler files
1147 # 5:list of actions, options and expected outputs.
1148 # 6:name of output file
1149 # 7:compiler flags (optional)
1151 # Actions: { command command-line-options file-containg-expected-output-regexps }
1153 # objdump: Apply objdump options on result.
1154 # nm: Apply nm options on result.
1155 # readelf: Apply readelf options on result.
1156 # ld: Don't apply anything on result. Compare output during linking with
1157 # the file containing regexps (which is the second arg, not the third).
1158 # Note that this *must* be the first action if it is to be used at all;
1159 # in all other cases, any output from the linker during linking is
1160 # treated as a sign of an error and FAILs the test.
1162 # args is an optional list of target triplets to be xfailed.
1164 proc run_ld_link_tests { ldtests args } {
1178 global ld_elf_shared_opt
1180 if { [is_elf_format] && [check_shared_lib_support] } {
1181 set ld_extra_opt "$ld_elf_shared_opt"
1186 foreach testitem $ldtests {
1187 set testname [lindex $testitem 0]
1189 if ![runtest_file_p $runtests $testname] then {
1193 foreach target $args {
1197 set ld_options [lindex $testitem 1]
1198 set ld_after [lindex $testitem 2]
1199 set as_options [lindex $testitem 3]
1200 set src_files [lindex $testitem 4]
1201 set actions [lindex $testitem 5]
1202 set binfile tmpdir/[lindex $testitem 6]
1203 set cflags [lindex $testitem 7]
1210 # verbose -log "Testname is $testname"
1211 # verbose -log "ld_options is $ld_options"
1212 # verbose -log "ld_after is $ld_after"
1213 # verbose -log "as_options is $as_options"
1214 # verbose -log "src_files is $src_files"
1215 # verbose -log "actions is $actions"
1216 # verbose -log "binfile is $binfile"
1218 # Assemble each file in the test.
1219 foreach src_file $src_files {
1220 set fileroot "[file rootname [file tail $src_file]]"
1221 set objfile "tmpdir/$fileroot.o"
1222 lappend objfiles $objfile
1224 if { [file extension $src_file] == ".c" } {
1225 set as_file "tmpdir/$fileroot.s"
1226 if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
1231 set as_file "$srcdir/$subdir/$src_file"
1233 if ![ld_assemble $as "$as_options $as_file" $objfile] {
1239 # Catch assembler errors.
1240 if { $is_unresolved } {
1241 unresolved $testname
1245 if { $binfile eq "tmpdir/" } {
1247 } elseif { [regexp ".*\\.a$" $binfile] } {
1248 if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
1251 } elseif { ![ld_simple_link $ld $binfile "$ld_extra_opt -L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
1253 set ld_output "$exec_output"
1257 foreach actionlist $actions {
1258 set action [lindex $actionlist 0]
1259 set progopts [lindex $actionlist 1]
1261 # There are actions where we run regexp_diff on the
1262 # output, and there are other actions (presumably).
1263 # Handling of the former look the same.
1267 { set dump_prog $objdump }
1269 { set dump_prog $nm }
1271 { set dump_prog $READELF }
1273 { set dump_prog "ld" }
1276 perror "Unrecognized action $action"
1282 if { $action == "ld" } {
1283 set regexpfile $progopts
1284 verbose "regexpfile is $srcdir/$subdir/$regexpfile"
1285 set_file_contents "tmpdir/ld.messages" "$ld_output"
1286 verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
1287 if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$regexpfile"] } then {
1288 verbose "output is $ld_output" 2
1293 } elseif { !$maybe_failed && $dump_prog != "" } {
1294 set dumpfile [lindex $actionlist 2]
1295 set binary $dump_prog
1297 # Ensure consistent sorting of symbols
1298 if {[info exists env(LC_ALL)]} {
1299 set old_lc_all $env(LC_ALL)
1302 set cmd "$binary $progopts $binfile"
1303 set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"]
1305 remote_upload host "ld.stderr"
1306 set comp_output [prune_warnings [file_contents "ld.stderr"]]
1307 remote_file host delete "ld.stderr"
1308 remote_file build delete "ld.stderr"
1310 if {[info exists old_lc_all]} {
1311 set env(LC_ALL) $old_lc_all
1316 if ![string match "" $comp_output] then {
1317 send_log "$comp_output\n"
1322 remote_upload host "dump.out"
1324 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1325 verbose "output is [file_contents "dump.out"]" 2
1327 remote_file build delete "dump.out"
1328 remote_file host delete "dump.out"
1331 remote_file build delete "dump.out"
1332 remote_file host delete "dump.out"
1337 if { $is_unresolved } {
1338 unresolved $testname
1339 } elseif { $maybe_failed || $failed } {
1347 # This definition is taken from an unreleased version of DejaGnu. Once
1348 # that version gets released, and has been out in the world for a few
1349 # months at least, it may be safe to delete this copy.
1350 if ![string length [info proc prune_warnings]] {
1352 # prune_warnings -- delete various system verbosities from TEXT
1355 # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9
1357 # Sites with particular verbose os's may wish to override this in site.exp.
1359 proc prune_warnings { text } {
1360 # This is from sun4's. Do it for all machines for now.
1361 # The "\\1" is to try to preserve a "\n" but only if necessary.
1362 regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text
1364 # It might be tempting to get carried away and delete blank lines, etc.
1365 # Just delete *exactly* what we're ask to, and that's it.
1370 # targets_to_xfail is a list of target triplets to be xfailed.
1371 # ldtests contains test-items with 3 items followed by 1 lists, 2 items
1372 # and 3 optional items:
1375 # 2:assembler options
1376 # 3:filenames of source files
1377 # 4:name of output file
1379 # 6:compiler flags (optional)
1380 # 7:language (optional)
1381 # 8:linker warning (optional)
1383 proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
1396 foreach testitem $ldtests {
1397 foreach target $targets_to_xfail {
1400 set testname [lindex $testitem 0]
1401 set ld_options [lindex $testitem 1]
1402 set as_options [lindex $testitem 2]
1403 set src_files [lindex $testitem 3]
1404 set binfile tmpdir/[lindex $testitem 4]
1405 set expfile [lindex $testitem 5]
1406 set cflags [lindex $testitem 6]
1407 set lang [lindex $testitem 7]
1408 set warning [lindex $testitem 8]
1412 # verbose -log "Testname is $testname"
1413 # verbose -log "ld_options is $ld_options"
1414 # verbose -log "as_options is $as_options"
1415 # verbose -log "src_files is $src_files"
1416 # verbose -log "binfile is $binfile"
1418 # Assemble each file in the test.
1419 foreach src_file $src_files {
1420 set fileroot "[file rootname [file tail $src_file]]"
1421 set objfile "tmpdir/$fileroot.o"
1422 lappend objfiles $objfile
1424 # We ignore warnings since some compilers may generate
1425 # incorrect section attributes and the assembler will warn
1427 if { [ string match "c++" $lang ] } {
1428 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1430 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1434 # We have to use $CC to build PIE and shared library.
1435 if { [ string match "c" $lang ] } {
1436 set link_proc ld_simple_link
1438 } elseif { [ string match "c++" $lang ] } {
1439 set link_proc ld_simple_link
1441 } elseif { [ string match "-shared" $ld_options ] \
1442 || [ string match "-pie" $ld_options ] } {
1443 set link_proc ld_simple_link
1446 set link_proc ld_link
1450 if { $binfile eq "tmpdir/" } {
1454 } elseif ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
1458 # Check if exec_output is expected.
1459 if { $warning != "" } then {
1460 verbose -log "returned with: <$exec_output>, expected: <$warning>"
1461 if { [regexp $warning $exec_output] } then {
1468 if { $failed == 0 } {
1469 send_log "Running: $binfile > $binfile.out\n"
1470 verbose "Running: $binfile > $binfile.out"
1471 catch "exec $binfile > $binfile.out" exec_output
1473 if ![string match "" $exec_output] then {
1474 send_log "$exec_output\n"
1475 verbose "$exec_output" 1
1478 send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
1479 verbose "diff $binfile.out $srcdir/$subdir/$expfile"
1480 catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
1481 set exec_output [prune_warnings $exec_output]
1483 if ![string match "" $exec_output] then {
1484 send_log "$exec_output\n"
1485 verbose "$exec_output" 1
1491 if { $failed != 0 } {
1500 # List contains test-items with 3 items followed by 2 lists, one item and
1501 # one optional item:
1503 # 1:ld or ar options
1505 # 3:filenames of source files
1506 # 4:action and options.
1507 # 5:name of output file
1508 # 6:language (optional)
1509 # 7:linker warnings (optional)
1512 # objdump: Apply objdump options on result. Compare with regex (last arg).
1513 # nm: Apply nm options on result. Compare with regex (last arg).
1514 # readelf: Apply readelf options on result. Compare with regex (last arg).
1516 proc run_cc_link_tests { ldtests } {
1531 if [board_info [target_info name] exists cflags] {
1532 set board_cflags " [board_info [target_info name] cflags]"
1537 foreach testitem $ldtests {
1538 set testname [lindex $testitem 0]
1539 set ldflags [lindex $testitem 1]
1540 set cflags [lindex $testitem 2]
1541 set src_files [lindex $testitem 3]
1542 set actions [lindex $testitem 4]
1543 set binfile tmpdir/[lindex $testitem 5]
1544 set lang [lindex $testitem 6]
1545 set warnings [lindex $testitem 7]
1550 #verbose -log "testname is $testname"
1551 #verbose -log "ldflags is $ldflags"
1552 #verbose -log "cflags is $cflags"
1553 #verbose -log "src_files is $src_files"
1554 #verbose -log "actions is $actions"
1555 #verbose -log "binfile is $binfile"
1556 #verbose -log "lang is $lang"
1557 #verbose -log "warnings is $warnings"
1559 # Compile each file in the test.
1560 foreach src_file $src_files {
1561 set fileroot "[file rootname [file tail $src_file]]"
1562 set objfile "tmpdir/$fileroot.o"
1563 lappend objfiles $objfile
1565 # We ignore warnings since some compilers may generate
1566 # incorrect section attributes and the assembler will warn
1568 if { [ string match "c++" $lang ] } {
1569 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1571 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1575 # Clear error and warning counts.
1578 if { [ string match "c++" $lang ] } {
1584 if { $binfile eq "tmpdir/" } {
1586 } elseif { [regexp ".*\\.a$" $binfile] } {
1587 if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } {
1592 if { ![ld_simple_link $cc_cmd $binfile "$board_cflags -L$srcdir/$subdir $ldflags $objfiles"] } {
1596 # Check if exec_output is expected.
1597 if { $warnings != "" } then {
1598 verbose -log "returned with: <$exec_output>, expected: <$warnings>"
1599 if { [regexp $warnings $exec_output] } then {
1606 if { $failed == 1 } {
1611 if { $failed == 0 } {
1612 foreach actionlist $actions {
1613 set action [lindex $actionlist 0]
1614 set progopts [lindex $actionlist 1]
1616 # There are actions where we run regexp_diff on the
1617 # output, and there are other actions (presumably).
1618 # Handling of the former look the same.
1622 { set dump_prog $objdump }
1624 { set dump_prog $nm }
1626 { set dump_prog $READELF }
1629 perror "Unrecognized action $action"
1635 if { $dump_prog != "" } {
1636 set dumpfile [lindex $actionlist 2]
1637 set binary $dump_prog
1639 # Ensure consistent sorting of symbols
1640 if {[info exists env(LC_ALL)]} {
1641 set old_lc_all $env(LC_ALL)
1644 set cmd "$binary $progopts $binfile > dump.out"
1646 catch "exec $cmd" comp_output
1647 if {[info exists old_lc_all]} {
1648 set env(LC_ALL) $old_lc_all
1652 set comp_output [prune_warnings $comp_output]
1654 if ![string match "" $comp_output] then {
1655 send_log "$comp_output\n"
1660 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1661 verbose "output is [file_contents "dump.out"]" 2
1669 if { $failed != 0 } {
1671 } elseif { $is_unresolved == 0 } {
1674 unresolved $testname
1680 # Returns true if --gc-sections is supported on the target.
1682 proc check_gc_sections_available { } {
1683 global gc_sections_available_saved
1686 if {![info exists gc_sections_available_saved]} {
1687 # Some targets don't support gc-sections despite whatever's
1688 # advertised by ld's options.
1689 if { [istarget d30v-*-*]
1690 || [istarget dlx-*-*]
1691 || [istarget i960-*-*]
1692 || [istarget pj*-*-*]
1693 || [istarget alpha-*-*]
1694 || [istarget hppa*64-*-*]
1695 || [istarget i370-*-*]
1696 || [istarget i860-*-*]
1697 || [istarget ia64-*-*]
1698 || [istarget mep-*-*]
1699 || [istarget mn10200-*-*] } {
1700 set gc_sections_available_saved 0
1704 # elf2flt uses -q (--emit-relocs), which is incompatible with
1706 if { [board_info target exists ldflags]
1707 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
1708 set gc_sections_available_saved 0
1712 # Check if the ld used by gcc supports --gc-sections.
1713 # FIXME: this test is useless since ld --help always says
1714 # --gc-sections is available
1715 set ld_output [remote_exec host $ld "--help"]
1716 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
1717 set gc_sections_available_saved 1
1719 set gc_sections_available_saved 0
1722 return $gc_sections_available_saved
1725 # Returns true if -shared is supported on the target
1726 # Only used and accurate for ELF targets at the moment
1728 proc check_shared_lib_support { } {
1729 if {![istarget aarch64*-*-elf]
1730 && ![istarget arc*-*-elf*]
1731 && ![istarget arm*-*-elf]
1732 && ![istarget avr-*-*]
1733 && ![istarget cr16-*-*]
1734 && ![istarget cris*-*-elf]
1735 && ![istarget crx-*-*]
1736 && ![istarget d10v-*-*]
1737 && ![istarget d30v-*-*]
1738 && ![istarget dlx-*-*]
1739 && ![istarget epiphany-*-*]
1740 && ![istarget fr30-*-*]
1741 && ![istarget frv-*-*]
1742 && ![istarget ft32-*-*]
1743 && ![istarget h8300-*-*]
1744 && ![istarget i860-*-*]
1745 && ![istarget i960-*-*]
1746 && ![istarget ip2k-*-*]
1747 && ![istarget iq2000-*-*]
1748 && ![istarget lm32-*-*]
1749 && ![istarget m32c-*-*]
1750 && ![istarget m32r-*-*]
1751 && ![istarget m6811-*-*]
1752 && ![istarget m6812-*-*]
1753 && ![istarget m68hc1*-*-*]
1754 && ![istarget mcore*-*-*]
1755 && ![istarget mep-*-*]
1756 && ![istarget microblaze-*-*]
1757 && ![istarget mips*-*-elf]
1758 && ![istarget mn10200-*-*]
1759 && ![istarget moxie-*-*]
1760 && ![istarget msp430-*-*]
1761 && ![istarget mt-*-*]
1762 && ![istarget nds32*-*-*]
1763 && ![istarget or1k*-*-*]
1764 && ![istarget pj-*-*]
1765 && ![istarget rl78-*-*]
1766 && ![istarget rx-*-*]
1767 && ![istarget spu-*-*]
1768 && ![istarget v850*-*-*]
1769 && ![istarget visium-*-*]
1770 && ![istarget xgate-*-*]
1771 && ![istarget xstormy16-*-*]
1772 && ![istarget *-*-irix*]
1773 && ![istarget *-*-rtems] } {
1779 # Returns true if the target ld supports the plugin API.
1780 proc check_plugin_api_available { } {
1781 global plugin_api_available_saved
1783 if {![info exists plugin_api_available_saved]} {
1784 # Check if the ld used by gcc supports --plugin.
1785 set ld_output [remote_exec host $ld "--help"]
1786 if { [ string first "-plugin PLUGIN" $ld_output ] >= 0 } {
1787 set plugin_api_available_saved 1
1789 set plugin_api_available_saved 0
1792 return $plugin_api_available_saved
1795 # Sets ld_sysroot to the current sysroot (empty if not supported) and
1796 # returns true if the target ld supports sysroot.
1797 proc check_sysroot_available { } {
1798 global ld_sysroot_available_saved ld ld_sysroot
1799 if {![info exists ld_sysroot_available_saved]} {
1800 # Check if ld supports --sysroot *other* than empty.
1801 set ld_sysroot [string trimright [lindex [remote_exec host $ld "--print-sysroot"] 1]]
1802 if { $ld_sysroot == "" } {
1803 set ld_sysroot_available_saved 0
1805 set ld_sysroot_available_saved 1
1808 return $ld_sysroot_available_saved
1811 # Returns true if the target compiler supports LTO
1812 proc check_lto_available { } {
1813 global lto_available_saved
1816 if {![info exists lto_available_saved]} {
1817 if { [which $CC] == 0 } {
1818 set lto_available_saved 0
1821 # This test will hide LTO bugs in ld. Since GCC 4.9 adds
1822 # -ffat-lto-objects, we always run LTO tests on Linux with
1824 if { [istarget "*-*-linux*"] && [at_least_gcc_version 4 9] } {
1825 set lto_available_saved 1
1828 # Check if gcc supports -flto -fuse-linker-plugin
1830 if [board_info [target_info name] exists cflags] {
1831 append flags " [board_info [target_info name] cflags]"
1833 if [board_info [target_info name] exists ldflags] {
1834 append flags " [board_info [target_info name] ldflags]"
1837 set basename "tmpdir/lto[pid]"
1838 set src ${basename}.c
1839 set output ${basename}.out
1840 set f [open $src "w"]
1841 puts $f "int main() { return 0; }"
1843 if [is_remote host] {
1844 set src [remote_download host $src]
1846 set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
1847 remote_file host delete $src
1848 remote_file host delete $output
1851 return $lto_available_saved
1854 # Returns true if the target compiler supports LTO -ffat-lto-objects
1855 proc check_lto_fat_available { } {
1856 global lto_fat_available_saved
1859 if {![info exists lto_fat_available_saved]} {
1860 if { [which $CC] == 0 } {
1861 set lto_fat_available_saved 0
1864 # This test will hide LTO bugs in ld. Since GCC 4.9 adds
1865 # -ffat-lto-objects, we always run LTO tests on Linux with
1867 if { [istarget "*-*-linux*"] && [at_least_gcc_version 4 9] } {
1868 set lto_fat_available_saved 1
1871 # Check if gcc supports -flto -fuse-linker-plugin
1873 if [board_info [target_info name] exists cflags] {
1874 append flags " [board_info [target_info name] cflags]"
1876 if [board_info [target_info name] exists ldflags] {
1877 append flags " [board_info [target_info name] ldflags]"
1880 set basename "tmpdir/lto[pid]"
1881 set src ${basename}.c
1882 set output ${basename}.out
1883 set f [open $src "w"]
1884 puts $f "int main() { return 0; }"
1886 if [is_remote host] {
1887 set src [remote_download host $src]
1889 set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
1890 remote_file host delete $src
1891 remote_file host delete $output
1894 return $lto_fat_available_saved
1897 # Returns true if the target compiler supports LTO and -shared
1898 proc check_lto_shared_available { } {
1899 global lto_shared_available_saved
1902 if {![info exists lto_shared_available_saved]} {
1903 if { [which $CC] == 0 } {
1904 set lto_shared_available_saved 0
1907 # This test will hide LTO bugs in ld. Since GCC 4.9 adds
1908 # -ffat-lto-objects, we always run LTO tests on Linux with
1910 if { [istarget "*-*-linux*"] && [at_least_gcc_version 4 9] } {
1911 set lto_shared_available_saved 1
1914 # Check if gcc supports -flto -fuse-linker-plugin -shared
1916 if [board_info [target_info name] exists cflags] {
1917 append flags " [board_info [target_info name] cflags]"
1919 if [board_info [target_info name] exists ldflags] {
1920 append flags " [board_info [target_info name] ldflags]"
1923 set basename "tmpdir/lto_shared[pid]"
1924 set src ${basename}.c
1925 set output ${basename}.so
1926 set f [open $src "w"]
1929 if [is_remote host] {
1930 set src [remote_download host $src]
1932 set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
1933 remote_file host delete $src
1934 remote_file host delete $output
1937 return $lto_shared_available_saved
1940 # Check if the assembler supports CFI statements.
1942 proc check_as_cfi { } {
1943 global check_as_cfi_result
1945 if [info exists check_as_cfi_result] {
1946 return $check_as_cfi_result
1948 set as_file "tmpdir/check_as_cfi.s"
1949 set as_fh [open $as_file w 0666]
1950 puts $as_fh "# Generated file. DO NOT EDIT"
1951 puts $as_fh "\t.cfi_startproc"
1952 puts $as_fh "\t.cfi_endproc"
1954 remote_download host $as_file
1955 verbose -log "Checking CFI support:"
1956 rename "perror" "check_as_cfi_perror"
1957 proc perror { args } { }
1958 set success [ld_assemble $as $as_file "/dev/null"]
1960 rename "check_as_cfi_perror" "perror"
1961 #remote_file host delete $as_file
1962 set check_as_cfi_result $success
1966 # Returns true if IFUNC works.
1968 proc check_ifunc_available { } {
1969 global ifunc_available_saved
1972 if {![info exists ifunc_available_saved]} {
1973 if { [which $CC] == 0 } {
1974 set ifunc_available_saved 0
1977 # Check if gcc supports -flto -fuse-linker-plugin
1979 if [board_info [target_info name] exists cflags] {
1980 append flags " [board_info [target_info name] cflags]"
1982 if [board_info [target_info name] exists ldflags] {
1983 append flags " [board_info [target_info name] ldflags]"
1986 set basename "tmpdir/ifunc[pid]"
1987 set src ${basename}.c
1988 set output ${basename}.out
1989 set f [open $src "w"]
1990 puts $f "extern int library_func2 (void);"
1991 puts $f "int main (void)"
1993 puts $f " if (library_func2 () != 2) __builtin_abort ();"
1994 puts $f " return 0; "
1996 puts $f "static int library_func1 (void) {return 2; }"
1997 puts $f "void *foo (void) __asm__ (\"library_func2\");"
1998 puts $f "void *foo (void) { return library_func1; }"
1999 puts $f "__asm__(\".type library_func2, %gnu_indirect_function\");"
2001 if [is_remote host] {
2002 set src [remote_download host $src]
2004 set ifunc_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
2005 if { $ifunc_available_saved == 1 } {
2006 set ifunc_available_saved [run_host_cmd_yesno "$output" ""]
2008 remote_file host delete $src
2009 remote_file host delete $output
2012 return $ifunc_available_saved
2015 # Returns true if ifunc attribute works.
2017 proc check_ifunc_attribute_available { } {
2018 global ifunc_attribute_available_saved
2021 if {![info exists ifunc_attribute_available_saved]} {
2022 if { [which $CC] == 0 } {
2023 set ifunc_attribute_available_saved 0
2026 # Check if gcc supports -flto -fuse-linker-plugin
2028 if [board_info [target_info name] exists cflags] {
2029 append flags " [board_info [target_info name] cflags]"
2031 if [board_info [target_info name] exists ldflags] {
2032 append flags " [board_info [target_info name] ldflags]"
2035 set basename "tmpdir/ifunc[pid]"
2036 set src ${basename}.c
2037 set output ${basename}.out
2038 set f [open $src "w"]
2039 puts $f "extern int library_func2 (void) __attribute__ ((ifunc (\"foo\")));"
2040 puts $f "int main (void)"
2042 puts $f " if (library_func2 () != 2) __builtin_abort ();"
2043 puts $f " return 0; "
2045 puts $f "static int library_func1 (void) {return 2; }"
2046 puts $f "void *foo (void) { return library_func1; }"
2048 if [is_remote host] {
2049 set src [remote_download host $src]
2051 set ifunc_attribute_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
2052 if { $ifunc_attribute_available_saved == 1 } {
2053 set ifunc_attribute_available_saved [run_host_cmd_yesno "$output" ""]
2055 remote_file host delete $src
2056 remote_file host delete $output
2059 return $ifunc_attribute_available_saved
2062 # Provide virtual target "cfi" for targets supporting CFI.
2064 rename "istarget" "istarget_ld"
2065 proc istarget { target } {
2066 if {$target == "cfi"} {
2067 return [check_as_cfi]
2069 return [istarget_ld $target]