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 # Means the same as 'error', except the regular expression lines
559 # are contains in FILE.
562 # Expect a linker warning matching REGEX. It is an error to issue
563 # both "error" and "warning". Multiple "warning" directives
564 # append to the expected linker warning message.
566 # warning_output: FILE
567 # Means the same as 'warning', except the regular expression
568 # lines are contains in FILE.
571 # Adding this option will cause the linker to generate a linker
572 # map file, using the -Map=MAPFILE command line option. If
573 # there is no -Map=MAPFILE in the 'ld: FLAGS' then one will be
574 # added to the linker command line. The contents of the
575 # generated MAPFILE are then compared against the regexp lines
576 # in FILE using `regexp_diff' (see below for details).
578 # Each option may occur at most once unless otherwise mentioned.
580 # After the option lines come regexp lines. `run_dump_test' calls
581 # `regexp_diff' to compare the output of the dumping tool against the
582 # regexps in FILE.d. `regexp_diff' is defined in binutils-common.exp;
583 # see further comments there.
585 proc run_dump_test { name {extra_options {}} } {
587 global OBJDUMP NM AS OBJCOPY READELF LD
588 global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
589 global host_triplet runtests
592 if [string match "*/*" $name] {
594 set name [file tail $name]
596 set file "$srcdir/$subdir/$name"
599 if ![runtest_file_p $runtests $name] then {
603 set opt_array [slurp_options "${file}.d"]
604 if { $opt_array == -1 } {
605 perror "error reading options from $file.d"
606 unresolved $subdir/$name
609 set dumpfile tmpdir/dump.out
614 set opts(ld_after_inputfiles) {}
617 set opts(notarget) {}
628 set opts(error_output) {}
629 set opts(warning_output) {}
630 set opts(objcopy_linked_file) {}
631 set opts(objcopy_objects) {}
634 foreach i $opt_array {
635 set opt_name [lindex $i 0]
636 set opt_val [lindex $i 1]
637 if ![info exists opts($opt_name)] {
638 perror "unknown option $opt_name in file $file.d"
639 unresolved $subdir/$name
643 switch -- $opt_name {
650 # Move any source-specific as-flags to a separate list to
651 # simplify processing.
652 if { [llength $opt_val] > 1 } {
653 lappend asflags [lrange $opt_val 1 end]
654 set opt_val [lindex $opt_val 0]
660 if [string length $opts($opt_name)] {
661 perror "option $opt_name multiply set in $file.d"
662 unresolved $subdir/$name
666 # A single "# ld:" with no options should do the right thing.
667 if { $opt_name == "ld" } {
670 # Likewise objcopy_linked_file.
671 if { $opt_name == "objcopy_linked_file" } {
676 if { $opt_name == "as" || $opt_name == "ld" } {
677 set opt_val [subst $opt_val]
680 # Append differently whether it's a message (without space) or
681 # an option or list (with space).
682 switch -- $opt_name {
685 append opts($opt_name) $opt_val
688 set opts($opt_name) [concat $opts($opt_name) $opt_val]
693 foreach i $extra_options {
694 set opt_name [lindex $i 0]
695 set opt_val [lindex $i 1]
696 if ![info exists opts($opt_name)] {
697 perror "unknown option $opt_name given in extra_opts"
698 unresolved $subdir/$name
701 # Add extra option to end of existing option, adding space
703 if { ![regexp "warning|error" $opt_name]
704 && [string length $opts($opt_name)] } {
705 append opts($opt_name) " "
707 append opts($opt_name) $opt_val
710 foreach opt { as ld } {
711 regsub {\[big_or_little_endian\]} $opts($opt) \
712 [big_or_little_endian] opts($opt)
715 # Decide early whether we should run the test for this target.
716 if { [llength $opts(target)] > 0 } {
718 foreach targ $opts(target) {
719 if [istarget $targ] {
724 if { $targmatch == 0 } {
728 foreach targ $opts(notarget) {
729 if [istarget $targ] {
735 # It's meaningless to require an output-testing method when we
737 if { $opts(error) == "" && $opts(error_output) == "" } {
738 if {$opts(PROG) != ""} {
739 switch -- $opts(PROG) {
740 objdump { set program objdump }
741 nm { set program nm }
742 objcopy { set program objcopy }
743 readelf { set program readelf }
745 { perror "unrecognized program option $opts(PROG) in $file.d"
746 unresolved $subdir/$name
750 # Guess which program to run, by seeing which option was specified.
751 foreach p {objdump objcopy nm readelf} {
752 if {$opts($p) != ""} {
753 if {$program != ""} {
754 perror "ambiguous dump program in $file.d"
755 unresolved $subdir/$name
763 if { $program == "" \
764 && $opts(map) == "" \
765 && $opts(warning) == "" \
766 && $opts(warning_output) == "" \
767 && $opts(error) == "" \
768 && $opts(error_output) == "" } {
769 perror "dump program unspecified in $file.d"
770 unresolved $subdir/$name
775 if { $opts(name) == "" } {
776 set testname "$subdir/$name"
778 set testname $opts(name)
781 if { $opts(source) == "" } {
782 set sourcefiles [list ${file}.s]
783 set asflags [list ""]
786 foreach sf $opts(source) {
787 if { [string match "/*" $sf] } {
788 lappend sourcefiles "$sf"
790 lappend sourcefiles "$srcdir/$subdir/$sf"
795 if { $opts(dump) == "" } {
798 set dfile $srcdir/$subdir/$opts(dump)
801 # Time to setup xfailures.
802 foreach targ $opts(xfail) {
806 # Assemble each file.
808 for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
809 set sourcefile [lindex $sourcefiles $i]
810 set sourceasflags [lindex $asflags $i]
811 set run_objcopy_objects 0
813 if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
814 set run_objcopy_objects 1
816 regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
818 set objfile "tmpdir/dump$i.o"
819 catch "exec rm -f $objfile" exec_output
820 lappend objfiles $objfile
821 set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
824 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
825 remote_upload host "ld.tmp"
826 set comp_output [prune_warnings [file_contents "ld.tmp"]]
827 remote_file host delete "ld.tmp"
828 remote_file build delete "ld.tmp"
830 if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then {
831 send_log "$comp_output\n"
832 verbose "$comp_output" 3
834 set exitstat "succeeded"
835 if { $cmdret != 0 } { set exitstat "failed" }
836 verbose -log "$exitstat with: <$comp_output>"
841 if { $run_objcopy_objects } {
842 set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
845 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
846 "" "/dev/null" "objcopy.tmp"]
847 remote_upload host "objcopy.tmp"
848 set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
849 remote_file host delete "objcopy.tmp"
850 remote_file build delete "objcopy.tmp"
852 if { [lindex $cmdret 0] != 0 \
853 || ![string match "" $comp_output] } {
854 send_log "$comp_output\n"
855 verbose "$comp_output" 3
857 set exitstat "succeeded"
858 if { $cmdret != 0 } { set exitstat "failed" }
859 verbose -log "$exitstat with: <$comp_output>"
866 if { (($opts(warning) != "") && ($opts(error) != "")) \
867 || (($opts(warning) != "") && ($opts(error_output) != "")) \
868 || (($opts(warning) != "") && ($opts(warning_output) != "")) \
869 || (($opts(error) != "") && ($opts(warning_output) != "")) \
870 || (($opts(error) != "") && ($opts(error_output) != "")) \
871 || (($opts(warning_output) != "") && ($opts(error_output) != "")) } {
872 perror "$testname: bad mix of warning, error, warning_output, and error_output test-directives"
877 set check_ld(source) ""
878 if { $opts(error) != "" \
879 || $opts(warning) != "" \
880 || $opts(error_output) != "" \
881 || $opts(warning_output) != "" } {
883 if { $opts(error) != "" || $opts(error_output) != "" } {
884 set check_ld(terminal) 1
886 set check_ld(terminal) 0
889 if { $opts(error) != "" || $opts(warning) != "" } {
890 set check_ld(source) "regex"
891 if { $opts(error) != "" } {
892 set check_ld(regex) $opts(error)
894 set check_ld(regex) $opts(warning)
897 set check_ld(source) "file"
898 if { $opts(error_output) != "" } {
899 set check_ld(file) $opts(error_output)
901 set check_ld(file) $opts(warning_output)
906 # Perhaps link the file(s).
908 set objfile "tmpdir/dump"
909 catch "exec rm -f $objfile" exec_output
911 # Add -L$srcdir/$subdir so that the linker command can use
912 # linker scripts in the source directory.
913 set cmd "$LD $LDFLAGS -L$srcdir/$subdir \
914 $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)"
916 # If needed then check for, or add a -Map option.
918 if { $opts(map) != "" } then {
919 if { [regexp -- "-Map=(\[^ \]+)" $cmd all mapfile] } then {
920 # Found existing mapfile option
921 verbose -log "Existing mapfile '$mapfile' found"
924 set mapfile "tmpdir/dump.map"
925 verbose -log "Adding mapfile '$mapfile'"
926 set cmd "$cmd -Map=$mapfile"
931 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
932 remote_upload host "ld.tmp"
933 set comp_output [file_contents "ld.tmp"]
934 remote_file host delete "ld.tmp"
935 remote_file build delete "ld.tmp"
936 set cmdret [lindex $cmdret 0]
938 if { $cmdret == 0 && $run_objcopy } {
940 set objfile "tmpdir/dump1"
941 remote_file host delete $objfile
943 # Note that we don't use OBJCOPYFLAGS here; any flags must be
944 # explicitly specified.
945 set cmd "$OBJCOPY $opts(objcopy_linked_file) $infile $objfile"
948 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
949 remote_upload host "ld.tmp"
950 append comp_output [file_contents "ld.tmp"]
951 remote_file host delete "ld.tmp"
952 remote_file build delete "ld.tmp"
953 set cmdret [lindex $cmdret 0]
956 regsub "\n$" $comp_output "" comp_output
957 if { $cmdret != 0 || $comp_output != "" || $check_ld(source) != "" } then {
958 set exitstat "succeeded"
959 if { $cmdret != 0 } { set exitstat "failed" }
961 if { $check_ld(source) == "regexp" } {
962 verbose -log "$exitstat with: <$comp_output>, expected: <$check_ld(regex)>"
963 } elseif { $check_ld(source) == "file" } {
964 verbose -log "$exitstat with: <$comp_output>, expected in file $check_ld(file)"
965 set_file_contents "tmpdir/ld.messages" "$comp_output"
967 verbose -log "$exitstat with: <$comp_output>, no expected output"
969 send_log "$comp_output\n"
970 verbose "$comp_output" 3
972 if { (($check_ld(source) == "") == ($comp_output == "")) \
973 && (($cmdret == 0) == ($check_ld(terminal) == 0)) \
974 && ((($check_ld(source) == "regex") \
975 && ($check_ld(regex) == "") == ($comp_output == "") \
976 && [regexp $check_ld(regex) $comp_output]) \
977 || (($check_ld(source) == "file") \
978 && ([regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$check_ld(file)"]))) } {
979 # We have the expected output from ld.
980 if { $check_ld(terminal) || $program == "" } {
990 if { $opts(map) != "" } then {
991 # Check the map file matches.
992 set map_pattern_file $srcdir/$subdir/$opts(map)
993 verbose -log "Compare '$mapfile' against '$map_pattern_file'"
994 if { [regexp_diff $mapfile $map_pattern_file] } then {
995 fail "$testname (map file check)"
997 pass "$testname (map file check)"
1000 if { $program == "" } then {
1005 set objfile "tmpdir/dump0.o"
1008 # We must not have expected failure if we get here.
1009 if { $opts(error) != "" } {
1014 set progopts1 $opts($program)
1015 eval set progopts \$[string toupper $program]FLAGS
1016 eval set binary \$[string toupper $program]
1018 if { ![is_remote host] && [which $binary] == 0 } {
1023 if { $progopts1 == "" } { set $progopts1 "-r" }
1024 verbose "running $binary $progopts $progopts1" 3
1026 # Objcopy, unlike the other two, won't send its output to stdout,
1027 # so we have to run it specially.
1028 set cmd "$binary $progopts $progopts1 $objfile > $dumpfile"
1029 if { $program == "objcopy" } {
1030 set cmd "$binary $progopts $progopts1 $objfile $dumpfile"
1033 # Ensure consistent sorting of symbols
1034 if {[info exists env(LC_ALL)]} {
1035 set old_lc_all $env(LC_ALL)
1039 set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"]
1040 set cmdret [lindex $cmdret 0]
1041 remote_upload host "ld.tmp"
1042 set comp_output [prune_warnings [file_contents "ld.tmp"]]
1043 remote_file host delete "ld.tmp"
1044 remote_file build delete "ld.tmp"
1045 if {[info exists old_lc_all]} {
1046 set env(LC_ALL) $old_lc_all
1050 if { $cmdret != 0 || $comp_output != "" } {
1051 send_log "exited abnormally with $cmdret, output:$comp_output\n"
1056 if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 }
1057 if { [regexp_diff $dumpfile "${dfile}"] } then {
1059 if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
1066 proc slurp_options { file } {
1067 # If options_regsub(foo) is set to {a b}, then the contents of a
1068 # "#foo:" line will have regsub -all applied to replace a with b.
1069 global options_regsub
1071 if [catch { set f [open $file r] } x] {
1072 #perror "couldn't open `$file': $x"
1077 # whitespace expression
1080 # whitespace is ignored anywhere except within the options list;
1081 # option names are alphabetic plus underscore only.
1082 set pat "^#${ws}(\[a-zA-Z_\]*)$ws:${ws}(.*)$ws\$"
1083 while { [gets $f line] != -1 } {
1084 set line [string trim $line]
1085 # Whitespace here is space-tab.
1086 if [regexp $pat $line xxx opt_name opt_val] {
1088 if [info exists options_regsub($opt_name)] {
1089 set subst $options_regsub($opt_name)
1090 regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
1093 lappend opt_array [list $opt_name $opt_val]
1102 proc file_contents { filename } {
1103 set file [open $filename r]
1104 set contents [read $file]
1109 proc set_file_contents { filename contents } {
1110 set file [open $filename w]
1111 puts $file "$contents"
1115 # Create an archive using ar
1117 proc ar_simple_create { ar aropts target objects } {
1118 remote_file host delete $target
1120 set exec_output [run_host_cmd "$ar" "-rc $aropts $target $objects"]
1121 set exec_output [prune_warnings $exec_output]
1123 if [string match "" $exec_output] then {
1124 send_log "$exec_output\n"
1131 # List contains test-items with 3 items followed by 2 lists, one item and
1132 # one optional item:
1134 # 1:ld/ar leading options, placed before object files
1135 # 2:ld/ar trailing options, placed after object files
1136 # 3:assembler options
1137 # 4:filenames of assembler files
1138 # 5:list of actions, options and expected outputs.
1139 # 6:name of output file
1140 # 7:compiler flags (optional)
1142 # Actions: { command command-line-options file-containg-expected-output-regexps }
1144 # objdump: Apply objdump options on result.
1145 # nm: Apply nm options on result.
1146 # readelf: Apply readelf options on result.
1147 # ld: Don't apply anything on result. Compare output during linking with
1148 # the file containing regexps (which is the second arg, not the third).
1149 # Note that this *must* be the first action if it is to be used at all;
1150 # in all other cases, any output from the linker during linking is
1151 # treated as a sign of an error and FAILs the test.
1153 proc run_ld_link_tests { ldtests } {
1168 foreach testitem $ldtests {
1169 set testname [lindex $testitem 0]
1171 if ![runtest_file_p $runtests $testname] then {
1175 set ld_options [lindex $testitem 1]
1176 set ld_after [lindex $testitem 2]
1177 set as_options [lindex $testitem 3]
1178 set src_files [lindex $testitem 4]
1179 set actions [lindex $testitem 5]
1180 set binfile tmpdir/[lindex $testitem 6]
1181 set cflags [lindex $testitem 7]
1188 # verbose -log "Testname is $testname"
1189 # verbose -log "ld_options is $ld_options"
1190 # verbose -log "ld_after is $ld_after"
1191 # verbose -log "as_options is $as_options"
1192 # verbose -log "src_files is $src_files"
1193 # verbose -log "actions is $actions"
1194 # verbose -log "binfile is $binfile"
1196 # Assemble each file in the test.
1197 foreach src_file $src_files {
1198 set fileroot "[file rootname [file tail $src_file]]"
1199 set objfile "tmpdir/$fileroot.o"
1200 lappend objfiles $objfile
1202 if { [file extension $src_file] == ".c" } {
1203 set as_file "tmpdir/$fileroot.s"
1204 if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
1209 set as_file "$srcdir/$subdir/$src_file"
1211 if ![ld_assemble $as "$as_options $as_file" $objfile] {
1217 # Catch assembler errors.
1218 if { $is_unresolved } {
1219 unresolved $testname
1223 if { $binfile eq "tmpdir/" } {
1225 } elseif { [regexp ".*\\.a$" $binfile] } {
1226 if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
1229 } elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
1231 set ld_output "$exec_output"
1235 foreach actionlist $actions {
1236 set action [lindex $actionlist 0]
1237 set progopts [lindex $actionlist 1]
1239 # There are actions where we run regexp_diff on the
1240 # output, and there are other actions (presumably).
1241 # Handling of the former look the same.
1245 { set dump_prog $objdump }
1247 { set dump_prog $nm }
1249 { set dump_prog $READELF }
1251 { set dump_prog "ld" }
1254 perror "Unrecognized action $action"
1260 if { $action == "ld" } {
1261 set regexpfile $progopts
1262 verbose "regexpfile is $srcdir/$subdir/$regexpfile"
1263 set_file_contents "tmpdir/ld.messages" "$ld_output"
1264 verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
1265 if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$regexpfile"] } then {
1266 verbose "output is $ld_output" 2
1271 } elseif { !$maybe_failed && $dump_prog != "" } {
1272 set dumpfile [lindex $actionlist 2]
1273 set binary $dump_prog
1275 # Ensure consistent sorting of symbols
1276 if {[info exists env(LC_ALL)]} {
1277 set old_lc_all $env(LC_ALL)
1280 set cmd "$binary $progopts $binfile"
1281 set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"]
1283 remote_upload host "ld.stderr"
1284 set comp_output [prune_warnings [file_contents "ld.stderr"]]
1285 remote_file host delete "ld.stderr"
1286 remote_file build delete "ld.stderr"
1288 if {[info exists old_lc_all]} {
1289 set env(LC_ALL) $old_lc_all
1294 if ![string match "" $comp_output] then {
1295 send_log "$comp_output\n"
1300 remote_upload host "dump.out"
1302 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1303 verbose "output is [file_contents "dump.out"]" 2
1305 remote_file build delete "dump.out"
1306 remote_file host delete "dump.out"
1309 remote_file build delete "dump.out"
1310 remote_file host delete "dump.out"
1315 if { $is_unresolved } {
1316 unresolved $testname
1317 } elseif { $maybe_failed || $failed } {
1325 # This definition is taken from an unreleased version of DejaGnu. Once
1326 # that version gets released, and has been out in the world for a few
1327 # months at least, it may be safe to delete this copy.
1328 if ![string length [info proc prune_warnings]] {
1330 # prune_warnings -- delete various system verbosities from TEXT
1333 # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9
1335 # Sites with particular verbose os's may wish to override this in site.exp.
1337 proc prune_warnings { text } {
1338 # This is from sun4's. Do it for all machines for now.
1339 # The "\\1" is to try to preserve a "\n" but only if necessary.
1340 regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text
1342 # It might be tempting to get carried away and delete blank lines, etc.
1343 # Just delete *exactly* what we're ask to, and that's it.
1348 # targets_to_xfail is a list of target triplets to be xfailed.
1349 # ldtests contains test-items with 3 items followed by 1 lists, 2 items
1350 # and 3 optional items:
1353 # 2:assembler options
1354 # 3:filenames of source files
1355 # 4:name of output file
1357 # 6:compiler flags (optional)
1358 # 7:language (optional)
1359 # 8:linker warning (optional)
1361 proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
1374 foreach testitem $ldtests {
1375 foreach target $targets_to_xfail {
1378 set testname [lindex $testitem 0]
1379 set ld_options [lindex $testitem 1]
1380 set as_options [lindex $testitem 2]
1381 set src_files [lindex $testitem 3]
1382 set binfile tmpdir/[lindex $testitem 4]
1383 set expfile [lindex $testitem 5]
1384 set cflags [lindex $testitem 6]
1385 set lang [lindex $testitem 7]
1386 set warning [lindex $testitem 8]
1390 # verbose -log "Testname is $testname"
1391 # verbose -log "ld_options is $ld_options"
1392 # verbose -log "as_options is $as_options"
1393 # verbose -log "src_files is $src_files"
1394 # verbose -log "binfile is $binfile"
1396 # Assemble each file in the test.
1397 foreach src_file $src_files {
1398 set fileroot "[file rootname [file tail $src_file]]"
1399 set objfile "tmpdir/$fileroot.o"
1400 lappend objfiles $objfile
1402 # We ignore warnings since some compilers may generate
1403 # incorrect section attributes and the assembler will warn
1405 if { [ string match "c++" $lang ] } {
1406 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1408 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1412 # We have to use $CC to build PIE and shared library.
1413 if { [ string match "c" $lang ] } {
1414 set link_proc ld_simple_link
1416 } elseif { [ string match "c++" $lang ] } {
1417 set link_proc ld_simple_link
1419 } elseif { [ string match "-shared" $ld_options ] \
1420 || [ string match "-pie" $ld_options ] } {
1421 set link_proc ld_simple_link
1424 set link_proc ld_link
1428 if { $binfile eq "tmpdir/" } {
1432 } elseif ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
1436 # Check if exec_output is expected.
1437 if { $warning != "" } then {
1438 verbose -log "returned with: <$exec_output>, expected: <$warning>"
1439 if { [regexp $warning $exec_output] } then {
1446 if { $failed == 0 } {
1447 send_log "Running: $binfile > $binfile.out\n"
1448 verbose "Running: $binfile > $binfile.out"
1449 catch "exec $binfile > $binfile.out" exec_output
1451 if ![string match "" $exec_output] then {
1452 send_log "$exec_output\n"
1453 verbose "$exec_output" 1
1456 send_log "diff $binfile.out $srcdir/$subdir/$expfile\n"
1457 verbose "diff $binfile.out $srcdir/$subdir/$expfile"
1458 catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output
1459 set exec_output [prune_warnings $exec_output]
1461 if ![string match "" $exec_output] then {
1462 send_log "$exec_output\n"
1463 verbose "$exec_output" 1
1469 if { $failed != 0 } {
1478 # List contains test-items with 3 items followed by 2 lists, one item and
1479 # one optional item:
1481 # 1:ld or ar options
1483 # 3:filenames of source files
1484 # 4:action and options.
1485 # 5:name of output file
1486 # 6:language (optional)
1487 # 7:linker warnings (optional)
1490 # objdump: Apply objdump options on result. Compare with regex (last arg).
1491 # nm: Apply nm options on result. Compare with regex (last arg).
1492 # readelf: Apply readelf options on result. Compare with regex (last arg).
1494 proc run_cc_link_tests { ldtests } {
1509 if [board_info [target_info name] exists cflags] {
1510 set board_cflags " [board_info [target_info name] cflags]"
1515 foreach testitem $ldtests {
1516 set testname [lindex $testitem 0]
1517 set ldflags [lindex $testitem 1]
1518 set cflags [lindex $testitem 2]
1519 set src_files [lindex $testitem 3]
1520 set actions [lindex $testitem 4]
1521 set binfile tmpdir/[lindex $testitem 5]
1522 set lang [lindex $testitem 6]
1523 set warnings [lindex $testitem 7]
1528 #verbose -log "testname is $testname"
1529 #verbose -log "ldflags is $ldflags"
1530 #verbose -log "cflags is $cflags"
1531 #verbose -log "src_files is $src_files"
1532 #verbose -log "actions is $actions"
1533 #verbose -log "binfile is $binfile"
1534 #verbose -log "lang is $lang"
1535 #verbose -log "warnings is $warnings"
1537 # Compile each file in the test.
1538 foreach src_file $src_files {
1539 set fileroot "[file rootname [file tail $src_file]]"
1540 set objfile "tmpdir/$fileroot.o"
1541 lappend objfiles $objfile
1543 # We ignore warnings since some compilers may generate
1544 # incorrect section attributes and the assembler will warn
1546 if { [ string match "c++" $lang ] } {
1547 ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1549 ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
1553 # Clear error and warning counts.
1556 if { [ string match "c++" $lang ] } {
1562 if { $binfile eq "tmpdir/" } {
1564 } elseif { [regexp ".*\\.a$" $binfile] } {
1565 if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } {
1570 if { ![ld_simple_link $cc_cmd $binfile "$board_cflags -L$srcdir/$subdir $ldflags $objfiles"] } {
1574 # Check if exec_output is expected.
1575 if { $warnings != "" } then {
1576 verbose -log "returned with: <$exec_output>, expected: <$warnings>"
1577 if { [regexp $warnings $exec_output] } then {
1584 if { $failed == 1 } {
1589 if { $failed == 0 } {
1590 foreach actionlist $actions {
1591 set action [lindex $actionlist 0]
1592 set progopts [lindex $actionlist 1]
1594 # There are actions where we run regexp_diff on the
1595 # output, and there are other actions (presumably).
1596 # Handling of the former look the same.
1600 { set dump_prog $objdump }
1602 { set dump_prog $nm }
1604 { set dump_prog $READELF }
1607 perror "Unrecognized action $action"
1613 if { $dump_prog != "" } {
1614 set dumpfile [lindex $actionlist 2]
1615 set binary $dump_prog
1617 # Ensure consistent sorting of symbols
1618 if {[info exists env(LC_ALL)]} {
1619 set old_lc_all $env(LC_ALL)
1622 set cmd "$binary $progopts $binfile > dump.out"
1624 catch "exec $cmd" comp_output
1625 if {[info exists old_lc_all]} {
1626 set env(LC_ALL) $old_lc_all
1630 set comp_output [prune_warnings $comp_output]
1632 if ![string match "" $comp_output] then {
1633 send_log "$comp_output\n"
1638 if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then {
1639 verbose "output is [file_contents "dump.out"]" 2
1647 if { $failed != 0 } {
1649 } elseif { $is_unresolved == 0 } {
1652 unresolved $testname
1658 # Returns true if --gc-sections is supported on the target.
1660 proc check_gc_sections_available { } {
1661 global gc_sections_available_saved
1664 if {![info exists gc_sections_available_saved]} {
1665 # Some targets don't support gc-sections despite whatever's
1666 # advertised by ld's options.
1667 if { [istarget arc-*-*]
1668 || [istarget d30v-*-*]
1669 || [istarget dlx-*-*]
1670 || [istarget i960-*-*]
1671 || [istarget pj*-*-*]
1672 || [istarget alpha-*-*]
1673 || [istarget hppa*64-*-*]
1674 || [istarget i370-*-*]
1675 || [istarget i860-*-*]
1676 || [istarget ia64-*-*]
1677 || [istarget mep-*-*]
1678 || [istarget mn10200-*-*] } {
1679 set gc_sections_available_saved 0
1683 # elf2flt uses -q (--emit-relocs), which is incompatible with
1685 if { [board_info target exists ldflags]
1686 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
1687 set gc_sections_available_saved 0
1691 # Check if the ld used by gcc supports --gc-sections.
1692 # FIXME: this test is useless since ld --help always says
1693 # --gc-sections is available
1694 set ld_output [remote_exec host $ld "--help"]
1695 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
1696 set gc_sections_available_saved 1
1698 set gc_sections_available_saved 0
1701 return $gc_sections_available_saved
1704 # Returns true if -shared is supported on the target
1705 # Only used and accurate for ELF targets at the moment
1707 proc check_shared_lib_support { } {
1708 if {![istarget aarch64*-*-elf]
1709 && ![istarget arc-*-*]
1710 && ![istarget arm*-*-elf]
1711 && ![istarget avr-*-*]
1712 && ![istarget cr16-*-*]
1713 && ![istarget cris*-*-elf]
1714 && ![istarget crx-*-*]
1715 && ![istarget d10v-*-*]
1716 && ![istarget d30v-*-*]
1717 && ![istarget dlx-*-*]
1718 && ![istarget epiphany-*-*]
1719 && ![istarget fr30-*-*]
1720 && ![istarget frv-*-*]
1721 && ![istarget h8300-*-*]
1722 && ![istarget i860-*-*]
1723 && ![istarget i960-*-*]
1724 && ![istarget ip2k-*-*]
1725 && ![istarget iq2000-*-*]
1726 && ![istarget lm32-*-*]
1727 && ![istarget m32c-*-*]
1728 && ![istarget m32r-*-*]
1729 && ![istarget m6811-*-*]
1730 && ![istarget m6812-*-*]
1731 && ![istarget m68hc1*-*-*]
1732 && ![istarget mcore*-*-*]
1733 && ![istarget mep-*-*]
1734 && ![istarget microblaze-*-*]
1735 && ![istarget mips*-*-elf]
1736 && ![istarget mn10200-*-*]
1737 && ![istarget moxie-*-*]
1738 && ![istarget msp430-*-*]
1739 && ![istarget mt-*-*]
1740 && ![istarget nds32*-*-*]
1741 && ![istarget or1k*-*-*]
1742 && ![istarget pj-*-*]
1743 && ![istarget rl78-*-*]
1744 && ![istarget rx-*-*]
1745 && ![istarget spu-*-*]
1746 && ![istarget v850*-*-*]
1747 && ![istarget visium-*-*]
1748 && ![istarget xstormy16-*-*]
1749 && ![istarget *-*-irix*]
1750 && ![istarget *-*-rtems] } {
1756 # Returns true if the target ld supports the plugin API.
1757 proc check_plugin_api_available { } {
1758 global plugin_api_available_saved
1760 if {![info exists plugin_api_available_saved]} {
1761 # Check if the ld used by gcc supports --plugin.
1762 set ld_output [remote_exec host $ld "--help"]
1763 if { [ string first "-plugin PLUGIN" $ld_output ] >= 0 } {
1764 set plugin_api_available_saved 1
1766 set plugin_api_available_saved 0
1769 return $plugin_api_available_saved
1772 # Sets ld_sysroot to the current sysroot (empty if not supported) and
1773 # returns true if the target ld supports sysroot.
1774 proc check_sysroot_available { } {
1775 global ld_sysroot_available_saved ld ld_sysroot
1776 if {![info exists ld_sysroot_available_saved]} {
1777 # Check if ld supports --sysroot *other* than empty.
1778 set ld_sysroot [string trimright [lindex [remote_exec host $ld "--print-sysroot"] 1]]
1779 if { $ld_sysroot == "" } {
1780 set ld_sysroot_available_saved 0
1782 set ld_sysroot_available_saved 1
1785 return $ld_sysroot_available_saved
1788 # Returns true if the target compiler supports LTO
1789 proc check_lto_available { } {
1790 global lto_available_saved
1793 if {![info exists lto_available_saved]} {
1794 if { [which $CC] == 0 } {
1795 set lto_available_saved 0
1798 # Check if gcc supports -flto -fuse-linker-plugin
1800 if [board_info [target_info name] exists cflags] {
1801 append flags " [board_info [target_info name] cflags]"
1803 if [board_info [target_info name] exists ldflags] {
1804 append flags " [board_info [target_info name] ldflags]"
1807 set basename "tmpdir/lto[pid]"
1808 set src ${basename}.c
1809 set output ${basename}.out
1810 set f [open $src "w"]
1811 puts $f "int main() { return 0; }"
1813 remote_download host $src
1814 set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
1815 remote_file host delete $src
1816 remote_file host delete $output
1819 return $lto_available_saved
1822 # Returns true if the target compiler supports LTO -ffat-lto-objects
1823 proc check_lto_fat_available { } {
1824 global lto_fat_available_saved
1827 if {![info exists lto_fat_available_saved]} {
1828 if { [which $CC] == 0 } {
1829 set lto_fat_available_saved 0
1832 # Check if gcc supports -flto -fuse-linker-plugin
1834 if [board_info [target_info name] exists cflags] {
1835 append flags " [board_info [target_info name] cflags]"
1837 if [board_info [target_info name] exists ldflags] {
1838 append flags " [board_info [target_info name] ldflags]"
1841 set basename "tmpdir/lto[pid]"
1842 set src ${basename}.c
1843 set output ${basename}.out
1844 set f [open $src "w"]
1845 puts $f "int main() { return 0; }"
1847 remote_download host $src
1848 set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
1849 remote_file host delete $src
1850 remote_file host delete $output
1853 return $lto_fat_available_saved
1856 # Returns true if the target compiler supports LTO and -shared
1857 proc check_lto_shared_available { } {
1858 global lto_shared_available_saved
1861 if {![info exists lto_shared_available_saved]} {
1862 if { [which $CC] == 0 } {
1863 set lto_shared_available_saved 0
1866 # Check if gcc supports -flto -fuse-linker-plugin -shared
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/lto_shared[pid]"
1876 set src ${basename}.c
1877 set output ${basename}.so
1878 set f [open $src "w"]
1881 remote_download host $src
1882 set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
1883 remote_file host delete $src
1884 remote_file host delete $output
1887 return $lto_shared_available_saved
1890 # Check if the assembler supports CFI statements.
1892 proc check_as_cfi { } {
1893 global check_as_cfi_result
1895 if [info exists check_as_cfi_result] {
1896 return $check_as_cfi_result
1898 set as_file "tmpdir/check_as_cfi.s"
1899 set as_fh [open $as_file w 0666]
1900 puts $as_fh "# Generated file. DO NOT EDIT"
1901 puts $as_fh "\t.cfi_startproc"
1902 puts $as_fh "\t.cfi_endproc"
1904 remote_download host $as_file
1905 verbose -log "Checking CFI support:"
1906 rename "perror" "check_as_cfi_perror"
1907 proc perror { args } { }
1908 set success [ld_assemble $as $as_file "/dev/null"]
1910 rename "check_as_cfi_perror" "perror"
1911 #remote_file host delete $as_file
1912 set check_as_cfi_result $success
1916 # Returns true if IFUNC works.
1918 proc check_ifunc_available { } {
1919 global ifunc_available_saved
1922 if {![info exists ifunc_available_saved]} {
1923 if { [which $CC] == 0 } {
1924 set ifunc_available_saved 0
1927 # Check if gcc supports -flto -fuse-linker-plugin
1929 if [board_info [target_info name] exists cflags] {
1930 append flags " [board_info [target_info name] cflags]"
1932 if [board_info [target_info name] exists ldflags] {
1933 append flags " [board_info [target_info name] ldflags]"
1936 set basename "tmpdir/ifunc[pid]"
1937 set src ${basename}.c
1938 set output ${basename}.out
1939 set f [open $src "w"]
1940 puts $f "extern int library_func2 (void);"
1941 puts $f "int main (void)"
1943 puts $f " if (library_func2 () != 2) __builtin_abort ();"
1944 puts $f " return 0; "
1946 puts $f "static int library_func1 (void) {return 2; }"
1947 puts $f "void *foo (void) __asm__ (\"library_func2\");"
1948 puts $f "void *foo (void) { return library_func1; }"
1949 puts $f "__asm__(\".type library_func2, %gnu_indirect_function\");"
1951 remote_download host $src
1952 set ifunc_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
1953 if { $ifunc_available_saved == 1 } {
1954 set ifunc_available_saved [run_host_cmd_yesno "$output" ""]
1956 remote_file host delete $src
1957 remote_file host delete $output
1960 return $ifunc_available_saved
1963 # Returns true if ifunc attribute works.
1965 proc check_ifunc_attribute_available { } {
1966 global ifunc_attribute_available_saved
1969 if {![info exists ifunc_attribute_available_saved]} {
1970 if { [which $CC] == 0 } {
1971 set ifunc_attribute_available_saved 0
1974 # Check if gcc supports -flto -fuse-linker-plugin
1976 if [board_info [target_info name] exists cflags] {
1977 append flags " [board_info [target_info name] cflags]"
1979 if [board_info [target_info name] exists ldflags] {
1980 append flags " [board_info [target_info name] ldflags]"
1983 set basename "tmpdir/ifunc[pid]"
1984 set src ${basename}.c
1985 set output ${basename}.out
1986 set f [open $src "w"]
1987 puts $f "extern int library_func2 (void) __attribute__ ((ifunc (\"foo\")));"
1988 puts $f "int main (void)"
1990 puts $f " if (library_func2 () != 2) __builtin_abort ();"
1991 puts $f " return 0; "
1993 puts $f "static int library_func1 (void) {return 2; }"
1994 puts $f "void *foo (void) { return library_func1; }"
1996 remote_download host $src
1997 set ifunc_attribute_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
1998 if { $ifunc_attribute_available_saved == 1 } {
1999 set ifunc_attribute_available_saved [run_host_cmd_yesno "$output" ""]
2001 remote_file host delete $src
2002 remote_file host delete $output
2005 return $ifunc_attribute_available_saved
2008 # Provide virtual target "cfi" for targets supporting CFI.
2010 rename "istarget" "istarget_ld"
2011 proc istarget { target } {
2012 if {$target == "cfi"} {
2013 return [check_as_cfi]
2015 return [istarget_ld $target]