1 # Copyright (C) 1999, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program; if not, write to the Free Software
15 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 # Please email any bugs, comments, and/or additions to this file to:
18 # gcc-patches@gcc.gnu.org
20 # This file defines procs for determining features supported by the target.
22 # Try to compile some code and return the messages printed by the compiler.
24 # BASENAME is a basename to use for temporary files.
25 # TYPE is the type of compilation to perform (see target_compile).
26 # CONTENTS gives the contents of the input file.
27 # The rest is optional:
28 # OPTIONS: additional compiler options to use.
29 proc get_compiler_messages {basename type contents args} {
32 if { [llength $args] > 0 } {
33 set options "additional_flags=[lindex $args 0]"
38 set src ${basename}[pid].c
40 assembly { set output ${basename}[pid].s }
41 object { set output ${basename}[pid].o }
46 set lines [${tool}_target_compile $src $output $type "$options"]
48 remote_file build delete $output
53 proc current_target_name { } {
55 if [info exists target_info(target,name)] {
56 set answer $target_info(target,name)
63 ###############################
64 # proc check_weak_available { }
65 ###############################
67 # weak symbols are only supported in some configs/object formats
68 # this proc returns 1 if they're supported, 0 if they're not, or -1 if unsure
70 proc check_weak_available { } {
74 # All mips targets should support it
76 if { [ string first "mips" $target_cpu ] >= 0 } {
80 # All solaris2 targets should support it
82 if { [regexp ".*-solaris2.*" $target_triplet] } {
86 # DEC OSF/1/Digital UNIX/Tru64 UNIX supports it
88 if { [regexp "alpha.*osf.*" $target_triplet] } {
92 # Windows targets Cygwin and MingW32 support it
94 if { [regexp ".*mingw32|.*cygwin" $target_triplet] } {
98 # HP-UX 10.X doesn't support it
100 if { [regexp "hppa.*hpux10" $target_triplet] } {
104 # ELF and ECOFF support it. a.out does with gas/gld but may also with
105 # other linkers, so we should try it
107 set objformat [gcc_target_object_format]
115 unknown { return -1 }
120 ###############################
121 # proc check_visibility_available { what_kind }
122 ###############################
124 # The visibility attribute is only support in some object formats
125 # This proc returns 1 if it is supported, 0 if not.
126 # The argument is the kind of visibility, default/protected/hidden/internal.
128 proc check_visibility_available { what_kind } {
129 global visibility_available_saved
131 global target_triplet
133 # On NetWare, support makes no sense.
134 if { [string match "*-*-netware*" $target_triplet] } {
138 if [string match "" $what_kind] { set what_kind "hidden" }
140 if { [info exists visibility_available_saved] } {
141 verbose "Saved result is <$visibility_available_saved>" 1
142 if { [ lsearch -exact $visibility_available_saved $what_kind ] != -1 } {
144 } elseif { [ lsearch -exact $visibility_available_saved "!$what_kind" ] != -1 } {
149 set lines [get_compiler_messages visibility object "
150 void f() __attribute__((visibility(\"$what_kind\")));
153 if [string match "" $lines] then {
155 lappend visibility_available_saved $what_kind
158 lappend visibility_available_saved "!$what_kind"
163 ###############################
164 # proc check_alias_available { }
165 ###############################
167 # Determine if the target toolchain supports the alias attribute.
169 # Returns 2 if the target supports aliases. Returns 1 if the target
170 # only supports weak aliased. Returns 0 if the target does not
171 # support aliases at all. Returns -1 if support for aliases could not
174 proc check_alias_available { } {
175 global alias_available_saved
178 if [info exists alias_available_saved] {
179 verbose "check_alias_available returning saved $alias_available_saved" 2
183 verbose "check_alias_available compiling testfile $src" 2
184 set f [open $src "w"]
185 # Compile a small test program. The definition of "g" is
186 # necessary to keep the Solaris assembler from complaining
188 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
189 puts $f "void g() {} void f() __attribute__((alias(\"g\")));"
191 set lines [${tool}_target_compile $src $obj object ""]
193 remote_file build delete $obj
195 if [string match "" $lines] then {
196 # No error messages, everything is OK.
197 set alias_available_saved 2
199 if [regexp "alias definitions not supported" $lines] {
200 verbose "check_alias_available target does not support aliases" 2
202 set objformat [gcc_target_object_format]
204 if { $objformat == "elf" } {
205 verbose "check_alias_available but target uses ELF format, so it ought to" 2
206 set alias_available_saved -1
208 set alias_available_saved 0
211 if [regexp "only weak aliases are supported" $lines] {
212 verbose "check_alias_available target supports only weak aliases" 2
213 set alias_available_saved 1
215 set alias_available_saved -1
220 verbose "check_alias_available returning $alias_available_saved" 2
223 return $alias_available_saved
226 # Returns true if --gc-sections is supported on the target.
228 proc check_gc_sections_available { } {
229 global gc_sections_available_saved
232 if {![info exists gc_sections_available_saved]} {
233 # Some targets don't support gc-sections despite whatever's
234 # advertised by ld's options.
235 if { [istarget alpha*-*-*]
236 || [istarget ia64-*-*] } {
237 set gc_sections_available_saved 0
241 # Check if the ld used by gcc supports --gc-sections.
242 set gcc_spec [${tool}_target_compile "-dumpspecs" "" "none" ""]
243 regsub ".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
244 set gcc_ld [lindex [${tool}_target_compile "-print-prog-name=$linker" "" "none" ""] 0]
245 set ld_output [remote_exec host "$gcc_ld" "--help"]
246 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
247 set gc_sections_available_saved 1
249 set gc_sections_available_saved 0
252 return $gc_sections_available_saved
255 # Return true if profiling is supported on the target.
257 proc check_profiling_available { test_what } {
258 global profiling_available_saved
260 verbose "Profiling argument is <$test_what>" 1
262 # These conditions depend on the argument so examine them before
263 # looking at the cache variable.
265 # Support for -p on solaris2 relies on mcrt1.o which comes with the
266 # vendor compiler. We cannot reliably predict the directory where the
267 # vendor compiler (and thus mcrt1.o) is installed so we can't
268 # necessarily find mcrt1.o even if we have it.
269 if { [istarget *-*-solaris2*] && [lindex $test_what 1] == "-p" } {
273 # Support for -p on irix relies on libprof1.a which doesn't appear to
274 # exist on any irix6 system currently posting testsuite results.
275 # Support for -pg on irix relies on gcrt1.o which doesn't exist yet.
276 # See: http://gcc.gnu.org/ml/gcc/2002-10/msg00169.html
277 if { [istarget mips*-*-irix*]
278 && ([lindex $test_what 1] == "-p" || [lindex $test_what 1] == "-pg") } {
282 # Now examine the cache variable.
283 if {![info exists profiling_available_saved]} {
284 # Some targets don't have any implementation of __bb_init_func or are
285 # missing other needed machinery.
286 if { [istarget mmix-*-*]
287 || [istarget arm*-*-eabi*]
288 || [istarget arm*-*-elf]
289 || [istarget arm*-*-symbianelf*]
290 || [istarget powerpc-*-eabi*]
291 || [istarget strongarm*-*-elf]
292 || [istarget xscale*-*-elf]
293 || [istarget cris-*-*]
294 || [istarget h8300-*-*]
295 || [istarget mips*-*-elf]
296 || [istarget xtensa-*-elf]
297 || [istarget *-*-windiss] } {
298 set profiling_available_saved 0
300 set profiling_available_saved 1
304 return $profiling_available_saved
307 # Return 1 if target has packed layout of structure members by
308 # default, 0 otherwise. Note that this is slightly different than
309 # whether the target has "natural alignment": both attributes may be
312 proc check_effective_target_default_packed { } {
313 global et_default_packed_saved
314 global et_default_packed_target_name
316 if { ![info exists et_default_packed_target_name] } {
317 set et_default_packed_target_name ""
320 # If the target has changed since we set the cached value, clear it.
321 set current_target [current_target_name]
322 if { $current_target != $et_default_packed_target_name } {
323 verbose "check_effective_target_default_packed: `$et_default_packed_target_name'" 2
324 set et_default_packed_target_name $current_target
325 if [info exists et_default_packed_saved] {
326 verbose "check_effective_target_default_packed: removing cached result" 2
327 unset et_default_packed_saved
331 if [info exists et_default_packed_saved] {
332 verbose "check_effective_target_default_packed: using cached result" 2
334 verbose "check_effective_target_default_packed: compiling source" 2
336 set et_default_packed_saved \
337 [string match "" [get_compiler_messages default_packed assembly {
338 struct x { char a; long b; } c;
339 int s[sizeof (c) == sizeof (char) + sizeof (long) ? 1 : -1];
343 verbose "check_effective_target_default_packed: returning $et_default_packed_saved" 2
344 return $et_default_packed_saved
347 # Return 1 if target has PCC_BITFIELD_TYPE_MATTERS defined. See
348 # documentation, where the test also comes from.
350 proc check_effective_target_pcc_bitfield_type_matters { } {
351 global et_pcc_bitfield_type_matters_saved
352 global et_pcc_bitfield_type_matters_target_name
354 if { ![info exists et_pcc_bitfield_type_matters_target_name] } {
355 set et_pcc_bitfield_type_matters_target_name ""
358 # If the target has changed since we set the cached value, clear it.
359 set current_target [current_target_name]
360 if { $current_target != $et_pcc_bitfield_type_matters_target_name } {
361 verbose "check_effective_target_pcc_bitfield_type_matters: `$et_pcc_bitfield_type_matters_target_name'" 2
362 set et_pcc_bitfield_type_matters_target_name $current_target
363 if [info exists et_pcc_bitfield_type_matters_saved] {
364 verbose "check_effective_target_pcc_bitfield_type_matters: removing cached result" 2
365 unset et_pcc_bitfield_type_matters_saved
369 if [info exists et_pcc_bitfield_type_matters_saved] {
370 verbose "check_effective_target_pcc_bitfield_type_matters: using cached result" 2
372 verbose "check_effective_target_pcc_bitfield_type_matters: compiling source" 2
374 # PCC_BITFIELD_TYPE_MATTERS isn't just about unnamed or empty
375 # bitfields, but let's stick to the example code from the docs.
376 set et_pcc_bitfield_type_matters_saved \
377 [string match "" [get_compiler_messages pcc_bitfield_type_matters assembly {
378 struct foo1 { char x; char :0; char y; };
379 struct foo2 { char x; int :0; char y; };
380 int s[sizeof (struct foo1) != sizeof (struct foo2) ? 1 : -1];
383 verbose "check_effective_target_pcc_bitfield_type_matters: returning $et_pcc_bitfield_type_matters_saved" 2
384 return $et_pcc_bitfield_type_matters_saved
387 # Return 1 if -fpic and -fPIC are supported, as in no warnings or errors
388 # emitted, 0 otherwise. Whether a shared library can actually be built is
389 # out of scope for this test.
391 # When the target name changes, replace the cached result.
393 proc check_effective_target_fpic { } {
395 global et_fpic_target_name
397 if { ![info exists et_fpic_target_name] } {
398 set et_fpic_target_name ""
401 # If the target has changed since we set the cached value, clear it.
402 set current_target [current_target_name]
403 if { $current_target != $et_fpic_target_name } {
404 verbose "check_effective_target_fpic: `$et_fpic_target_name'" 2
405 set et_fpic_target_name $current_target
406 if [info exists et_fpic_saved] {
407 verbose "check_effective_target_fpic: removing cached result" 2
412 if [info exists et_fpic_saved] {
413 verbose "check_effective_target_fpic: using cached result" 2
415 verbose "check_effective_target_fpic: compiling source" 2
417 # Note that M68K has a multilib that supports -fpic but not
418 # -fPIC, so we need to check both. We test with a program that
419 # requires GOT references.
420 set et_fpic_saved [string match "" [get_compiler_messages fpic object {
421 extern int foo (void); extern int bar;
422 int baz (void) { return foo () + bar; }
425 if { $et_fpic_saved != 0 } {
426 set et_fpic_saved [string match "" [get_compiler_messages fpic object {
427 extern int foo (void); extern int bar;
428 int baz (void) { return foo () + bar; }
432 verbose "check_effective_target_fpic: returning $et_fpic_saved" 2
433 return $et_fpic_saved
436 # Return true if iconv is supported on the target. In particular IBM1047.
438 proc check_iconv_available { test_what } {
446 verbose "check_iconv_available compiling testfile $src" 2
447 set f [open $src "w"]
448 # Compile a small test program.
449 puts $f "#include <iconv.h>\n"
450 puts $f "int main (void)\n {\n iconv_t cd; \n"
451 puts $f "cd = iconv_open (\"[lindex $test_what 1]\", \"UTF-8\");\n"
452 puts $f "if (cd == (iconv_t) -1)\n return 1;\n"
453 puts $f "return 0;\n}"
456 # If the tool configuration file has not set libiconv, try "-liconv"
457 if { ![info exists libiconv] } {
458 set libiconv "-liconv"
460 set lines [${tool}_target_compile $src $exe executable "libs=$libiconv" ]
463 if [string match "" $lines] then {
464 # No error messages, everything is OK.
466 set result [${tool}_load "./$exe" "" ""]
467 set status [lindex $result 0]
468 remote_file build delete $exe
470 verbose "check_iconv_available status is <$status>" 2
472 if { $status == "pass" } then {
480 # Return true if named sections are supported on this target.
481 # This proc does not cache results, because the answer may vary
482 # when cycling over subtarget options (e.g. irix o32/n32/n64) in
484 proc check_named_sections_available { } {
485 verbose "check_named_sections_available: compiling source" 2
486 set answer [string match "" [get_compiler_messages named object {
487 int __attribute__ ((section("whatever"))) foo;
489 verbose "check_named_sections_available: returning $answer" 2
493 # Return 1 if the target supports Fortran real kinds larger than real(8),
496 # When the target name changes, replace the cached result.
498 proc check_effective_target_fortran_large_real { } {
499 global et_fortran_large_real_saved
500 global et_fortran_large_real_target_name
503 if { ![info exists et_fortran_large_real_target_name] } {
504 set et_fortran_large_real_target_name ""
507 # If the target has changed since we set the cached value, clear it.
508 set current_target [current_target_name]
509 if { $current_target != $et_fortran_large_real_target_name } {
510 verbose "check_effective_target_fortran_large_real: `$et_fortran_large_real_target_name' `$current_target'" 2
511 set et_fortran_large_real_target_name $current_target
512 if [info exists et_fortran_large_real_saved] {
513 verbose "check_effective_target_fortran_large_real: removing cached result" 2
514 unset et_fortran_large_real_saved
518 if [info exists et_fortran_large_real_saved] {
519 verbose "check_effective_target_fortran_large_real returning saved $et_fortran_large_real_saved" 2
521 set et_fortran_large_real_saved 0
523 # Set up, compile, and execute a test program using large real
524 # kinds. Include the current process ID in the file names to
525 # prevent conflicts with invocations for multiple testsuites.
526 set src real[pid].f90
529 set f [open $src "w"]
530 puts $f "integer,parameter :: k = &"
531 puts $f " selected_real_kind (precision (0.0_8) + 1)"
532 puts $f "real(kind=k) :: x"
533 puts $f "x = cos (x);"
537 verbose "check_effective_target_fortran_large_real compiling testfile $src" 2
538 set lines [${tool}_target_compile $src $exe executable ""]
541 if [string match "" $lines] then {
542 # No error message, compilation succeeded.
543 set et_fortran_large_real_saved 1
547 return $et_fortran_large_real_saved
550 # Return 1 if the target supports Fortran integer kinds larger than
551 # integer(8), 0 otherwise.
553 # When the target name changes, replace the cached result.
555 proc check_effective_target_fortran_large_int { } {
556 global et_fortran_large_int_saved
557 global et_fortran_large_int_target_name
560 if { ![info exists et_fortran_large_int_target_name] } {
561 set et_fortran_large_int_target_name ""
564 # If the target has changed since we set the cached value, clear it.
565 set current_target [current_target_name]
566 if { $current_target != $et_fortran_large_int_target_name } {
567 verbose "check_effective_target_fortran_large_int: `$et_fortran_large_int_target_name' `$current_target'" 2
568 set et_fortran_large_int_target_name $current_target
569 if [info exists et_fortran_large_int_saved] {
570 verbose "check_effective_target_fortran_large_int: removing cached result" 2
571 unset et_fortran_large_int_saved
575 if [info exists et_fortran_large_int_saved] {
576 verbose "check_effective_target_fortran_large_int returning saved $et_fortran_large_int_saved" 2
578 set et_fortran_large_int_saved 0
580 # Set up, compile, and execute a test program using large integer
581 # kinds. Include the current process ID in the file names to
582 # prevent conflicts with invocations for multiple testsuites.
586 set f [open $src "w"]
587 puts $f "integer,parameter :: k = &"
588 puts $f " selected_int_kind (range (0_8) + 1)"
589 puts $f "integer(kind=k) :: i"
593 verbose "check_effective_target_fortran_large_int compiling testfile $src" 2
594 set lines [${tool}_target_compile $src $exe executable ""]
597 if [string match "" $lines] then {
598 # No error message, compilation succeeded.
599 set et_fortran_large_int_saved 1
603 return $et_fortran_large_int_saved
606 # Return 1 if we can statically link libgfortran, 0 otherwise.
608 # When the target name changes, replace the cached result.
610 proc check_effective_target_static_libgfortran { } {
611 global et_static_libgfortran
612 global et_static_libgfortran_target_name
615 if { ![info exists et_static_libgfortran_target_name] } {
616 set et_static_libgfortran_target_name ""
619 # If the target has changed since we set the cached value, clear it.
620 set current_target [current_target_name]
621 if { $current_target != $et_static_libgfortran_target_name } {
622 verbose "check_effective_target_static_libgfortran: `$et_static_libgfortran_target_name' `$current_target'" 2
623 set et_static_libgfortran_target_name $current_target
624 if [info exists et_static_libgfortran_saved] {
625 verbose "check_effective_target_static_libgfortran: removing cached result" 2
626 unset et_static_libgfortran_saved
630 if [info exists et_static_libgfortran_saved] {
631 verbose "check_effective_target_static_libgfortran returning saved $et_static_libgfortran_saved" 2
633 set et_static_libgfortran_saved 0
635 # Set up, compile, and execute a test program using static linking.
636 # Include the current process ID in the file names to prevent
637 # conflicts with invocations for multiple testsuites.
638 set opts "additional_flags=-static"
639 set src static[pid].f
640 set exe static[pid].x
642 set f [open $src "w"]
643 puts $f " print *, 'test'"
647 verbose "check_effective_target_static_libgfortran compiling testfile $src" 2
648 set lines [${tool}_target_compile $src $exe executable "$opts"]
651 if [string match "" $lines] then {
652 # No error message, compilation succeeded.
653 set et_static_libgfortran_saved 1
657 return $et_static_libgfortran_saved
660 # Return 1 if the target supports executing AltiVec instructions, 0
661 # otherwise. Cache the result.
663 proc check_vmx_hw_available { } {
664 global vmx_hw_available_saved
667 if [info exists vmx_hw_available_saved] {
668 verbose "check_hw_available returning saved $vmx_hw_available_saved" 2
670 set vmx_hw_available_saved 0
672 # Some simulators are known to not support VMX instructions.
673 if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } {
674 verbose "check_hw_available returning 0" 2
675 return $vmx_hw_available_saved
678 # Set up, compile, and execute a test program containing VMX
679 # instructions. Include the current process ID in the file
680 # names to prevent conflicts with invocations for multiple
685 set f [open $src "w"]
686 puts $f "int main() {"
687 puts $f "#ifdef __MACH__"
688 puts $f " asm volatile (\"vor v0,v0,v0\");"
690 puts $f " asm volatile (\"vor 0,0,0\");"
692 puts $f " return 0; }"
695 # Most targets don't require special flags for this test case, but
697 if [istarget *-*-darwin*] {
698 set opts "additional_flags=-maltivec"
703 verbose "check_vmx_hw_available compiling testfile $src" 2
704 set lines [${tool}_target_compile $src $exe executable "$opts"]
707 if [string match "" $lines] then {
708 # No error message, compilation succeeded.
709 set result [${tool}_load "./$exe" "" ""]
710 set status [lindex $result 0]
711 remote_file build delete $exe
712 verbose "check_vmx_hw_available testfile status is <$status>" 2
714 if { $status == "pass" } then {
715 set vmx_hw_available_saved 1
718 verbose "check_vmx_hw_availalble testfile compilation failed" 2
722 return $vmx_hw_available_saved
725 # GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
726 # complex float arguments. This affects gfortran tests that call cabsf
727 # in libm built by an earlier compiler. Return 1 if libm uses the same
728 # argument passing as the compiler under test, 0 otherwise.
730 # When the target name changes, replace the cached result.
732 proc check_effective_target_broken_cplxf_arg { } {
733 global et_broken_cplxf_arg_saved
734 global et_broken_cplxf_arg_target_name
737 # Skip the work for targets known not to be affected.
738 if { ![istarget powerpc64-*-linux*] } {
740 } elseif { [is-effective-target ilp32] } {
744 if { ![info exists et_broken_cplxf_arg_target_name] } {
745 set et_broken_cplxf_arg_target_name ""
748 # If the target has changed since we set the cached value, clear it.
749 set current_target [current_target_name]
750 if { $current_target != $et_broken_cplxf_arg_target_name } {
751 verbose "check_effective_target_broken_cplxf_arg: `$et_broken_cplxf_arg_target_name'" 2
752 set et_broken_cplxf_arg_target_name $current_target
753 if [info exists et_broken_cplxf_arg_saved] {
754 verbose "check_effective_target_broken_cplxf_arg: removing cached result" 2
755 unset et_broken_cplxf_arg_saved
759 if [info exists et_broken_cplxf_arg_saved] {
760 verbose "check_effective_target_broken_cplxf_arg: using cached result" 2
762 set et_broken_cplxf_arg_saved 0
763 # This is only known to affect one target.
764 if { ![istarget powerpc64-*-linux*] || ![is-effective-target lp64] } {
765 set et_broken_cplxf_arg_saved 0
766 verbose "check_effective_target_broken_cplxf_arg: caching 0" 2
767 return $et_broken_cplxf_arg_saved
770 # Set up, compile, and execute a C test program that calls cabsf.
774 set f [open $src "w"]
775 puts $f "#include <complex.h>"
776 puts $f "extern void abort (void);"
777 puts $f "float fabsf (float);"
778 puts $f "float cabsf (_Complex float);"
779 puts $f "int main ()"
781 puts $f " _Complex float cf;"
783 puts $f " cf = 3 + 4.0fi;"
784 puts $f " f = cabsf (cf);"
785 puts $f " if (fabsf (f - 5.0) > 0.0001) abort ();"
790 set lines [${tool}_target_compile $src $exe executable "-lm"]
793 if [string match "" $lines] {
794 # No error message, compilation succeeded.
795 set result [${tool}_load "./$exe" "" ""]
796 set status [lindex $result 0]
797 remote_file build delete $exe
799 verbose "check_effective_target_broken_cplxf_arg: status is <$status>" 2
801 if { $status != "pass" } {
802 set et_broken_cplxf_arg_saved 1
805 verbose "check_effective_target_broken_cplxf_arg: compilation failed" 2
808 return $et_broken_cplxf_arg_saved
811 proc check_alpha_max_hw_available { } {
812 global alpha_max_hw_available_saved
815 if [info exists alpha_max_hw_available_saved] {
816 verbose "check_alpha_max_hw_available returning saved $alpha_max_hw_available_saved" 2
818 set alpha_max_hw_available_saved 0
820 # Set up, compile, and execute a test program probing bit 8 of the
821 # architecture mask, which indicates presence of MAX instructions.
825 set f [open $src "w"]
826 puts $f "int main() { return __builtin_alpha_amask(1<<8) != 0; }"
829 verbose "check_alpha_max_hw_available compiling testfile $src" 2
830 set lines [${tool}_target_compile $src $exe executable ""]
833 if [string match "" $lines] then {
834 # No error message, compilation succeeded.
835 set result [${tool}_load "./$exe" "" ""]
836 set status [lindex $result 0]
837 remote_file build delete $exe
838 verbose "check_alpha_max_hw_available testfile status is <$status>" 2
840 if { $status == "pass" } then {
841 set alpha_max_hw_available_saved 1
844 verbose "check_alpha_max_hw_availalble testfile compilation failed" 2
848 return $alpha_max_hw_available_saved
851 # Returns true iff the FUNCTION is available on the target system.
852 # (This is essentially a Tcl implementation of Autoconf's
855 proc check_function_available { function } {
856 set var "${function}_available_saved"
860 if {![info exists $var]} {
863 # Check to make sure.
864 set src "function[pid].c"
865 set exe "function[pid].exe"
867 set f [open $src "w"]
868 puts $f "int main () { $function (); }"
871 set lines [${tool}_target_compile $src $exe executable ""]
875 if {![string match "" $lines]} then {
877 verbose -log "$function is not available"
879 verbose -log "$function is available"
886 # Returns true iff "fork" is available on the target system.
888 proc check_fork_available {} {
889 return [check_function_available "fork"]
892 # Returns true iff "mkfifo" is available on the target system.
894 proc check_mkfifo_available {} {
895 if {[istarget *-*-cygwin*]} {
896 # Cygwin has mkfifo, but support is incomplete.
900 return [check_function_available "mkfifo"]
903 # Return 1 if we're generating 32-bit code using default options, 0
906 # When the target name changes, replace the cached result.
908 proc check_effective_target_ilp32 { } {
909 global et_ilp32_saved
910 global et_ilp32_target_name
912 if { ![info exists et_ilp32_target_name] } {
913 set et_ilp32_target_name ""
916 # If the target has changed since we set the cached value, clear it.
917 set current_target [current_target_name]
918 if { $current_target != $et_ilp32_target_name } {
919 verbose "check_effective_target_ilp32: `$et_ilp32_target_name' `$current_target'" 2
920 set et_ilp32_target_name $current_target
921 if { [info exists et_ilp32_saved] } {
922 verbose "check_effective_target_ilp32: removing cached result" 2
927 if [info exists et_ilp32_saved] {
928 verbose "check-effective_target_ilp32: using cached result" 2
930 verbose "check_effective_target_ilp32: compiling source" 2
931 set et_ilp32_saved [string match "" [get_compiler_messages ilp32 object {
932 int dummy[(sizeof (int) == 4 && sizeof (void *) == 4 && sizeof (long) == 4 ) ? 1 : -1];
935 verbose "check_effective_target_ilp32: returning $et_ilp32_saved" 2
936 return $et_ilp32_saved
939 # Return 1 if we're generating 64-bit code using default options, 0
942 # When the target name changes, replace the cached result.
944 proc check_effective_target_lp64 { } {
946 global et_lp64_target_name
948 if { ![info exists et_lp64_target_name] } {
949 set et_lp64_target_name ""
952 # If the target has changed since we set the cached value, clear it.
953 set current_target [current_target_name]
954 if { $current_target != $et_lp64_target_name } {
955 verbose "check_effective_target_lp64: `$et_lp64_target_name' `$current_target'" 2
956 set et_lp64_target_name $current_target
957 if [info exists et_lp64_saved] {
958 verbose "check_effective_target_lp64: removing cached result" 2
963 if [info exists et_lp64_saved] {
964 verbose "check_effective_target_lp64: using cached result" 2
966 verbose "check_effective_target_lp64: compiling source" 2
967 set et_lp64_saved [string match "" [get_compiler_messages lp64 object {
968 int dummy[(sizeof (int) == 4 && sizeof (void *) == 8 && sizeof (long) == 8 ) ? 1 : -1];
971 verbose "check_effective_target_lp64: returning $et_lp64_saved" 2
972 return $et_lp64_saved
975 # Return 1 if the target needs a command line argument to enable a SIMD
978 # This won't change for different subtargets so cache the result.
980 proc check_effective_target_vect_cmdline_needed { } {
981 global et_vect_cmdline_needed_saved
983 if [info exists et_vect_cmdline_needed_saved] {
984 verbose "check_effective_target_vect_cmdline_needed: using cached result" 2
986 set et_vect_cmdline_needed_saved 1
987 if { [istarget ia64-*-*]
988 || [istarget x86_64-*-*] } {
989 set et_vect_cmdline_needed_saved 0
993 verbose "check_effective_target_vect_cmdline_needed: returning $et_vect_cmdline_needed_saved" 2
994 return $et_vect_cmdline_needed_saved
997 # Return 1 if the target supports hardware vectors of int, 0 otherwise.
999 # This won't change for different subtargets so cache the result.
1001 proc check_effective_target_vect_int { } {
1002 global et_vect_int_saved
1004 if [info exists et_vect_int_saved] {
1005 verbose "check_effective_target_vect_int: using cached result" 2
1007 set et_vect_int_saved 0
1008 if { [istarget i?86-*-*]
1009 || [istarget powerpc*-*-*]
1010 || [istarget x86_64-*-*]
1011 || [istarget sparc*-*-*]
1012 || [istarget alpha*-*-*]
1013 || [istarget ia64-*-*] } {
1014 set et_vect_int_saved 1
1018 verbose "check_effective_target_vect_int: returning $et_vect_int_saved" 2
1019 return $et_vect_int_saved
1022 # Return 1 is this is an arm target using 32-bit instructions
1023 proc check_effective_target_arm32 { } {
1024 global et_arm32_saved
1025 global et_arm32_target_name
1026 global compiler_flags
1028 if { ![info exists et_arm32_target_name] } {
1029 set et_arm32_target_name ""
1032 # If the target has changed since we set the cached value, clear it.
1033 set current_target [current_target_name]
1034 if { $current_target != $et_arm32_target_name } {
1035 verbose "check_effective_target_arm32: `$et_arm32_target_name' `$current_target'" 2
1036 set et_arm32_target_name $current_target
1037 if { [info exists et_arm32_saved] } {
1038 verbose "check_effective_target_arm32: removing cached result" 2
1039 unset et_arm32_saved
1043 if [info exists et_arm32_saved] {
1044 verbose "check-effective_target_arm32: using cached result" 2
1046 set et_arm32_saved 0
1047 if { [istarget arm-*-*]
1048 || [istarget strongarm*-*-*]
1049 || [istarget xscale-*-*] } {
1050 if ![string match "*-mthumb *" $compiler_flags] {
1051 set et_arm32_saved 1
1055 verbose "check_effective_target_arm32: returning $et_arm32_saved" 2
1056 return $et_arm32_saved
1059 # Return 1 if the target supports hardware vector shift operation.
1061 proc check_effective_target_vect_shift { } {
1062 global et_vect_shift_saved
1064 if [info exists et_vect_shift_saved] {
1065 verbose "check_effective_target_vect_shift: using cached result" 2
1067 set et_vect_shift_saved 0
1068 if { [istarget powerpc*-*-*]
1069 || [istarget ia64-*-*]
1070 || [istarget i?86-*-*]
1071 || [istarget x86_64-*-*] } {
1072 set et_vect_shift_saved 1
1076 verbose "check_effective_target_vect_shift: returning $et_vect_shift_saved" 2
1077 return $et_vect_shift_saved
1080 # Return 1 if the target supports hardware vectors of long, 0 otherwise.
1082 # This can change for different subtargets so do not cache the result.
1084 proc check_effective_target_vect_long { } {
1085 if { [istarget i?86-*-*]
1086 || ([istarget powerpc*-*-*] && [check_effective_target_ilp32])
1087 || [istarget x86_64-*-*]
1088 || ([istarget sparc*-*-*] && [check_effective_target_ilp32]) } {
1094 verbose "check_effective_target_vect_long: returning $answer" 2
1098 # Return 1 if the target supports hardware vectors of float, 0 otherwise.
1100 # This won't change for different subtargets so cache the result.
1102 proc check_effective_target_vect_float { } {
1103 global et_vect_float_saved
1105 if [info exists et_vect_float_saved] {
1106 verbose "check_effective_target_vect_float: using cached result" 2
1108 set et_vect_float_saved 0
1109 if { [istarget i?86-*-*]
1110 || [istarget powerpc*-*-*]
1111 || [istarget mipsisa64*-*-*]
1112 || [istarget x86_64-*-*]
1113 || [istarget ia64-*-*] } {
1114 set et_vect_float_saved 1
1118 verbose "check_effective_target_vect_float: returning $et_vect_float_saved" 2
1119 return $et_vect_float_saved
1122 # Return 1 if the target supports hardware vectors of double, 0 otherwise.
1124 # This won't change for different subtargets so cache the result.
1126 proc check_effective_target_vect_double { } {
1127 global et_vect_double_saved
1129 if [info exists et_vect_double_saved] {
1130 verbose "check_effective_target_vect_double: using cached result" 2
1132 set et_vect_double_saved 0
1133 if { [istarget i?86-*-*]
1134 || [istarget x86_64-*-*] } {
1135 set et_vect_double_saved 1
1139 verbose "check_effective_target_vect_double: returning $et_vect_double_saved" 2
1140 return $et_vect_double_saved
1143 # Return 1 if the target plus current options does not support a vector
1144 # max instruction on "int", 0 otherwise.
1146 # This won't change for different subtargets so cache the result.
1148 proc check_effective_target_vect_no_int_max { } {
1149 global et_vect_no_int_max_saved
1151 if [info exists et_vect_no_int_max_saved] {
1152 verbose "check_effective_target_vect_no_int_max: using cached result" 2
1154 set et_vect_no_int_max_saved 0
1155 if { [istarget sparc*-*-*]
1156 || [istarget alpha*-*-*] } {
1157 set et_vect_no_int_max_saved 1
1160 verbose "check_effective_target_vect_no_int_max: returning $et_vect_no_int_max_saved" 2
1161 return $et_vect_no_int_max_saved
1164 # Return 1 if the target plus current options does not support a vector
1165 # add instruction on "int", 0 otherwise.
1167 # This won't change for different subtargets so cache the result.
1169 proc check_effective_target_vect_no_int_add { } {
1170 global et_vect_no_int_add_saved
1172 if [info exists et_vect_no_int_add_saved] {
1173 verbose "check_effective_target_vect_no_int_add: using cached result" 2
1175 set et_vect_no_int_add_saved 0
1176 # Alpha only supports vector add on V8QI and V4HI.
1177 if { [istarget alpha*-*-*] } {
1178 set et_vect_no_int_add_saved 1
1181 verbose "check_effective_target_vect_no_int_add: returning $et_vect_no_int_add_saved" 2
1182 return $et_vect_no_int_add_saved
1185 # Return 1 if the target plus current options does not support vector
1186 # bitwise instructions, 0 otherwise.
1188 # This won't change for different subtargets so cache the result.
1190 proc check_effective_target_vect_no_bitwise { } {
1191 global et_vect_no_bitwise_saved
1193 if [info exists et_vect_no_bitwise_saved] {
1194 verbose "check_effective_target_vect_no_bitwise: using cached result" 2
1196 set et_vect_no_bitwise_saved 0
1198 verbose "check_effective_target_vect_no_bitwise: returning $et_vect_no_bitwise_saved" 2
1199 return $et_vect_no_bitwise_saved
1202 # Return 1 if the target plus current options does not support a vector
1203 # alignment mechanism, 0 otherwise.
1205 # This won't change for different subtargets so cache the result.
1207 proc check_effective_target_vect_no_align { } {
1208 global et_vect_no_align_saved
1210 if [info exists et_vect_no_align_saved] {
1211 verbose "check_effective_target_vect_no_align: using cached result" 2
1213 set et_vect_no_align_saved 0
1214 if { [istarget mipsisa64*-*-*]
1215 || [istarget sparc*-*-*]
1216 || [istarget ia64-*-*] } {
1217 set et_vect_no_align_saved 1
1220 verbose "check_effective_target_vect_no_align: returning $et_vect_no_align_saved" 2
1221 return $et_vect_no_align_saved
1224 # Return 1 if the target supports vector conditional operations, 0 otherwise.
1226 proc check_effective_target_vect_condition { } {
1227 global et_vect_cond_saved
1229 if [info exists et_vect_cond_saved] {
1230 verbose "check_effective_target_vect_cond: using cached result" 2
1232 set et_vect_cond_saved 0
1233 if { [istarget powerpc*-*-*]
1234 || [istarget ia64-*-*]
1235 || [istarget i?86-*-*]
1236 || [istarget x86_64-*-*] } {
1237 set et_vect_cond_saved 1
1241 verbose "check_effective_target_vect_cond: returning $et_vect_cond_saved" 2
1242 return $et_vect_cond_saved
1245 # Return 1 if the target supports vector int multiplication, 0 otherwise.
1247 proc check_effective_target_vect_int_mult { } {
1248 global et_vect_int_mult_saved
1250 if [info exists et_vect_int_mult_saved] {
1251 verbose "check_effective_target_vect_int_mult: using cached result" 2
1253 set et_vect_int_mult_saved 0
1254 if { [istarget powerpc*-*-*]
1255 || [istarget i?86-*-*]
1256 || [istarget x86_64-*-*] } {
1257 set et_vect_int_mult_saved 1
1261 verbose "check_effective_target_vect_int_mult: returning $et_vect_int_mult_saved" 2
1262 return $et_vect_int_mult_saved
1265 # Return 1 if the target supports atomic operations on "int" and "long".
1267 proc check_effective_target_sync_int_long { } {
1268 global et_sync_int_long_saved
1270 if [info exists et_sync_int_long_saved] {
1271 verbose "check_effective_target_sync_int_long: using cached result" 2
1273 set et_sync_int_long_saved 0
1274 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
1275 # load-reserved/store-conditional instructions.
1276 if { [istarget ia64-*-*]
1277 || [istarget i?86-*-*]
1278 || [istarget x86_64-*-*]
1279 || [istarget alpha*-*-*]
1280 || [istarget s390*-*-*]
1281 || [istarget powerpc*-*-*] } {
1282 set et_sync_int_long_saved 1
1286 verbose "check_effective_target_sync_int_long: returning $et_sync_int_long_saved" 2
1287 return $et_sync_int_long_saved
1290 # Return 1 if the target supports atomic operations on "char" and "short".
1292 proc check_effective_target_sync_char_short { } {
1293 global et_sync_char_short_saved
1295 if [info exists et_sync_char_short_saved] {
1296 verbose "check_effective_target_sync_char_short: using cached result" 2
1298 set et_sync_char_short_saved 0
1299 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
1300 # load-reserved/store-conditional instructions.
1301 if { [istarget ia64-*-*]
1302 || [istarget i?86-*-*]
1303 || [istarget x86_64-*-*]
1304 || [istarget alpha*-*-*]
1305 || [istarget powerpc*-*-*] } {
1306 set et_sync_char_short_saved 1
1310 verbose "check_effective_target_sync_char_short: returning $et_sync_char_short_saved" 2
1311 return $et_sync_char_short_saved
1314 # Return 1 if the target matches the effective target 'arg', 0 otherwise.
1315 # This can be used with any check_* proc that takes no argument and
1316 # returns only 1 or 0. It could be used with check_* procs that take
1317 # arguments with keywords that pass particular arguments.
1319 proc is-effective-target { arg } {
1321 if { [info procs check_effective_target_${arg}] != [list] } {
1322 set selected [check_effective_target_${arg}]
1325 "vmx_hw" { set selected [check_vmx_hw_available] }
1326 "named_sections" { set selected [check_named_sections_available] }
1327 "gc_sections" { set selected [check_gc_sections_available] }
1328 default { error "unknown effective target keyword `$arg'" }
1331 verbose "is-effective-target: $arg $selected" 2
1335 # Return 1 if the argument is an effective-target keyword, 0 otherwise.
1337 proc is-effective-target-keyword { arg } {
1338 if { [info procs check_effective_target_${arg}] != [list] } {
1341 # These have different names for their check_* procs.
1343 "vmx_hw" { return 1 }
1344 "named_sections" { return 1 }
1345 "gc_sections" { return 1 }
1346 default { return 0 }