1 # Copyright (C) 1999, 2001, 2003, 2004, 2005, 2006, 2007
2 # Free Software Foundation, Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 2 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 # Please email any bugs, comments, and/or additions to this file to:
19 # gcc-patches@gcc.gnu.org
21 # This file defines procs for determining features supported by the target.
23 # Try to compile some code and return the messages printed by the compiler,
24 # and optionally the contents for assembly files. Either a string or
25 # a list of two strings are returned, depending on WANT_OUTPUT.
27 # BASENAME is a basename to use for temporary files.
28 # WANT_OUTPUT is a flag which is 0 to request returning just the
29 # compiler messages, or 1 to return the messages and the contents
30 # of the assembly file. TYPE should be "assembly" if WANT_OUTPUT
32 # TYPE is the type of compilation to perform (see target_compile).
33 # CONTENTS gives the contents of the input file.
34 # The rest is optional:
35 # OPTIONS: additional compiler options to use.
36 proc get_compiler_messages {basename want_output type contents args} {
39 if { [llength $args] > 0 } {
40 set options [list "additional_flags=[lindex $args 0]"]
45 set src ${basename}[pid].c
47 assembly { set output ${basename}[pid].s }
48 object { set output ${basename}[pid].o }
53 set lines [${tool}_target_compile $src $output $type "$options"]
57 if { $type != "assembly" } {
58 error "WANT_OUTPUT can only be used with assembly output"
59 } elseif { ![string match "" $lines] } {
61 set result [list $lines ""]
64 set chan [open "$output"]
65 while {[gets $chan line] >= 0} {
69 set result [list $lines $text]
75 remote_file build delete $output
79 proc current_target_name { } {
81 if [info exists target_info(target,name)] {
82 set answer $target_info(target,name)
89 # Implement an effective-target check for property PROP by invoking
90 # the compiler and seeing if it prints any messages. Assume that the
91 # property holds if the compiler doesn't print anything. The other
92 # arguments are as for get_compiler_messages, starting with TYPE.
93 proc check_no_compiler_messages {prop args} {
96 set target [current_target_name]
97 if {![info exists et_cache($prop,target)]
98 || $et_cache($prop,target) != $target} {
99 verbose "check_no_compiler_messages $prop: compiling source for $target" 2
100 set et_cache($prop,target) $target
101 set et_cache($prop,value) \
102 [string match "" [eval get_compiler_messages $prop 0 $args]]
104 set value $et_cache($prop,value)
105 verbose "check_no_compiler_messages $prop: returning $value for $target" 2
109 # Similar to check_no_compiler_messages, but also verify that the regular
110 # expression PATTERN matches the compiler's output.
111 proc check_no_messages_and_pattern {prop pattern args} {
114 set target [current_target_name]
115 if {![info exists et_cache($prop,target)]
116 || $et_cache($prop,target) != $target} {
117 verbose "check_no_messages_and_pattern $prop: compiling source for $target" 2
118 set et_cache($prop,target) $target
119 set results [eval get_compiler_messages $prop 1 $args]
120 set et_cache($prop,value) \
121 [expr [string match "" [lindex $results 0]] \
122 && [regexp $pattern [lindex $results 1]]]
124 set value $et_cache($prop,value)
125 verbose "check_no_messages_and_pattern $prop: returning $value for $target" 2
129 ###############################
130 # proc check_weak_available { }
131 ###############################
133 # weak symbols are only supported in some configs/object formats
134 # this proc returns 1 if they're supported, 0 if they're not, or -1 if unsure
136 proc check_weak_available { } {
137 global target_triplet
140 # All mips targets should support it
142 if { [ string first "mips" $target_cpu ] >= 0 } {
146 # All solaris2 targets should support it
148 if { [regexp ".*-solaris2.*" $target_triplet] } {
152 # DEC OSF/1/Digital UNIX/Tru64 UNIX supports it
154 if { [regexp "alpha.*osf.*" $target_triplet] } {
158 # Windows targets Cygwin and MingW32 support it
160 if { [regexp ".*mingw32|.*cygwin" $target_triplet] } {
164 # HP-UX 10.X doesn't support it
166 if { [istarget "hppa*-*-hpux10*"] } {
170 # ELF and ECOFF support it. a.out does with gas/gld but may also with
171 # other linkers, so we should try it
173 set objformat [gcc_target_object_format]
181 unknown { return -1 }
186 ###############################
187 # proc check_visibility_available { what_kind }
188 ###############################
190 # The visibility attribute is only support in some object formats
191 # This proc returns 1 if it is supported, 0 if not.
192 # The argument is the kind of visibility, default/protected/hidden/internal.
194 proc check_visibility_available { what_kind } {
196 global target_triplet
198 # On NetWare, support makes no sense.
199 if { [istarget *-*-netware*] } {
203 if [string match "" $what_kind] { set what_kind "hidden" }
205 return [check_no_compiler_messages visibility_available_$what_kind object "
206 void f() __attribute__((visibility(\"$what_kind\")));
211 ###############################
212 # proc check_alias_available { }
213 ###############################
215 # Determine if the target toolchain supports the alias attribute.
217 # Returns 2 if the target supports aliases. Returns 1 if the target
218 # only supports weak aliased. Returns 0 if the target does not
219 # support aliases at all. Returns -1 if support for aliases could not
222 proc check_alias_available { } {
223 global alias_available_saved
226 if [info exists alias_available_saved] {
227 verbose "check_alias_available returning saved $alias_available_saved" 2
231 verbose "check_alias_available compiling testfile $src" 2
232 set f [open $src "w"]
233 # Compile a small test program. The definition of "g" is
234 # necessary to keep the Solaris assembler from complaining
236 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
237 puts $f "void g() {} void f() __attribute__((alias(\"g\")));"
239 set lines [${tool}_target_compile $src $obj object ""]
241 remote_file build delete $obj
243 if [string match "" $lines] then {
244 # No error messages, everything is OK.
245 set alias_available_saved 2
247 if [regexp "alias definitions not supported" $lines] {
248 verbose "check_alias_available target does not support aliases" 2
250 set objformat [gcc_target_object_format]
252 if { $objformat == "elf" } {
253 verbose "check_alias_available but target uses ELF format, so it ought to" 2
254 set alias_available_saved -1
256 set alias_available_saved 0
259 if [regexp "only weak aliases are supported" $lines] {
260 verbose "check_alias_available target supports only weak aliases" 2
261 set alias_available_saved 1
263 set alias_available_saved -1
268 verbose "check_alias_available returning $alias_available_saved" 2
271 return $alias_available_saved
274 # Returns true if --gc-sections is supported on the target.
276 proc check_gc_sections_available { } {
277 global gc_sections_available_saved
280 if {![info exists gc_sections_available_saved]} {
281 # Some targets don't support gc-sections despite whatever's
282 # advertised by ld's options.
283 if { [istarget alpha*-*-*]
284 || [istarget ia64-*-*] } {
285 set gc_sections_available_saved 0
289 # elf2flt uses -q (--emit-relocs), which is incompatible with
291 if { [board_info target exists ldflags]
292 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
293 set gc_sections_available_saved 0
297 # VxWorks kernel modules are relocatable objects linked with -r,
298 # while RTP executables are linked with -q (--emit-relocs).
299 # Both of these options are incompatible with --gc-sections.
300 if { [istarget *-*-vxworks*] } {
301 set gc_sections_available_saved 0
305 # Check if the ld used by gcc supports --gc-sections.
306 set gcc_spec [${tool}_target_compile "-dumpspecs" "" "none" ""]
307 regsub ".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
308 set gcc_ld [lindex [${tool}_target_compile "-print-prog-name=$linker" "" "none" ""] 0]
309 set ld_output [remote_exec host "$gcc_ld" "--help"]
310 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
311 set gc_sections_available_saved 1
313 set gc_sections_available_saved 0
316 return $gc_sections_available_saved
319 # Return true if profiling is supported on the target.
321 proc check_profiling_available { test_what } {
322 global profiling_available_saved
324 verbose "Profiling argument is <$test_what>" 1
326 # These conditions depend on the argument so examine them before
327 # looking at the cache variable.
329 # Support for -p on solaris2 relies on mcrt1.o which comes with the
330 # vendor compiler. We cannot reliably predict the directory where the
331 # vendor compiler (and thus mcrt1.o) is installed so we can't
332 # necessarily find mcrt1.o even if we have it.
333 if { [istarget *-*-solaris2*] && [lindex $test_what 1] == "-p" } {
337 # Support for -p on irix relies on libprof1.a which doesn't appear to
338 # exist on any irix6 system currently posting testsuite results.
339 # Support for -pg on irix relies on gcrt1.o which doesn't exist yet.
340 # See: http://gcc.gnu.org/ml/gcc/2002-10/msg00169.html
341 if { [istarget mips*-*-irix*]
342 && ([lindex $test_what 1] == "-p" || [lindex $test_what 1] == "-pg") } {
346 # At present, there is no profiling support on NetWare.
347 if { [istarget *-*-netware*] } {
351 # uClibc does not have gcrt1.o.
352 if { [check_effective_target_uclibc]
353 && ([lindex $test_what 1] == "-p"
354 || [lindex $test_what 1] == "-pg") } {
358 # Now examine the cache variable.
359 if {![info exists profiling_available_saved]} {
360 # Some targets don't have any implementation of __bb_init_func or are
361 # missing other needed machinery.
362 if { [istarget mmix-*-*]
363 || [istarget arm*-*-eabi*]
364 || [istarget arm*-*-elf]
365 || [istarget arm*-*-symbianelf*]
366 || [istarget bfin-*-*]
367 || [istarget powerpc-*-eabi*]
368 || [istarget strongarm*-*-elf]
369 || [istarget xscale*-*-elf]
370 || [istarget cris-*-*]
371 || [istarget h8300-*-*]
372 || [istarget m32c-*-elf]
373 || [istarget m68k-*-elf]
374 || [istarget m68k-*-uclinux*]
375 || [istarget mips*-*-elf]
376 || [istarget xtensa-*-elf]
377 || [istarget *-*-vxworks*]
378 || [istarget *-*-windiss] } {
379 set profiling_available_saved 0
381 set profiling_available_saved 1
385 return $profiling_available_saved
388 # Return 1 if target has packed layout of structure members by
389 # default, 0 otherwise. Note that this is slightly different than
390 # whether the target has "natural alignment": both attributes may be
393 proc check_effective_target_default_packed { } {
394 return [check_no_compiler_messages default_packed assembly {
395 struct x { char a; long b; } c;
396 int s[sizeof (c) == sizeof (char) + sizeof (long) ? 1 : -1];
400 # Return 1 if target has PCC_BITFIELD_TYPE_MATTERS defined. See
401 # documentation, where the test also comes from.
403 proc check_effective_target_pcc_bitfield_type_matters { } {
404 # PCC_BITFIELD_TYPE_MATTERS isn't just about unnamed or empty
405 # bitfields, but let's stick to the example code from the docs.
406 return [check_no_compiler_messages pcc_bitfield_type_matters assembly {
407 struct foo1 { char x; char :0; char y; };
408 struct foo2 { char x; int :0; char y; };
409 int s[sizeof (struct foo1) != sizeof (struct foo2) ? 1 : -1];
413 # Return 1 if *native* thread local storage (TLS) is supported, 0 otherwise.
415 # This won't change for different subtargets so cache the result.
417 proc check_effective_target_tls {} {
421 if [info exists et_tls_saved] {
422 verbose "check_effective_target_tls: using cached result" 2
428 verbose "check_effective_target_tls: compiling testfile $src" 2
429 set f [open $src "w"]
430 # Compile a small test program.
431 puts $f "__thread int i;\n"
434 # Test for thread-local data supported by the platform.
435 set comp_output [${tool}_target_compile $src $asm assembly ""]
437 if { [string match "*not supported*" $comp_output] } {
443 if { [string match "*emutls*" $text]} {
449 remove-build-file $asm
451 verbose "check_effective_target_tls: returning $et_tls_saved" 2
455 # Return 1 if TLS executables can run correctly, 0 otherwise.
457 # This won't change for different subtargets so cache the result.
459 proc check_effective_target_tls_runtime {} {
460 global et_tls_runtime_saved
463 if [info exists et_tls_runtime_saved] {
464 verbose "check_effective_target_tls_runtime: using cached result" 2
466 set et_tls_runtime_saved 0
468 set src tls_runtime[pid].c
469 set exe tls_runtime[pid].x
470 verbose "check_effective_target_tls_runtime: compiling testfile $src" 2
471 set f [open $src "w"]
472 # Compile a small test program.
473 puts $f "__thread int thr = 0;\n"
474 puts $f "int main(void)\n {\n return thr;\n}"
478 [${tool}_target_compile $src $exe executable ""]
481 if [string match "" $comp_output] then {
482 # No error messages, everything is OK.
484 set result [remote_load target "./$exe" "" ""]
485 set status [lindex $result 0]
486 remote_file build delete $exe
488 verbose "check_effective_target_tls_runtime status is <$status>" 2
490 if { $status == "pass" } {
491 set et_tls_runtime_saved 1
494 verbose "check_effective_target_tls_runtime: returning $et_tls_runtime_saved" 2
498 return $et_tls_runtime_saved
501 # Return 1 if compilation with -fopenmp is error-free for trivial
504 proc check_effective_target_fopenmp {} {
505 return [check_no_compiler_messages fopenmp object {
510 # Return 1 if the target supports -fstack-protector
511 proc check_effective_target_fstack_protector {} {
515 set src stack_prot[pid].c
516 set exe stack_prot[pid].x
518 verbose "check_effective_target_fstack_protector compiling testfile $src" 2
520 set f [open $src "w"]
521 # Compile a small test program.
522 puts $f "int main (void)\n { return 0; }\n"
525 set opts "additional_flags=-fstack-protector"
526 set lines [${tool}_target_compile $src $exe executable "$opts" ]
529 if [string match "" $lines] then {
530 # No error messages, everything is OK.
531 set result [${tool}_load "./$exe" "" ""]
532 set status [lindex $result 0]
533 remote_file build delete $exe
534 verbose "check_iconv_available status is <$status>" 2
536 if { $status == "pass" } then {
543 # Return 1 if compilation with -freorder-blocks-and-partition is error-free
544 # for trivial code, 0 otherwise.
546 proc check_effective_target_freorder {} {
547 return [check_no_compiler_messages freorder object {
549 } "-freorder-blocks-and-partition"]
552 # Return 1 if -fpic and -fPIC are supported, as in no warnings or errors
553 # emitted, 0 otherwise. Whether a shared library can actually be built is
554 # out of scope for this test.
556 proc check_effective_target_fpic { } {
557 # Note that M68K has a multilib that supports -fpic but not
558 # -fPIC, so we need to check both. We test with a program that
559 # requires GOT references.
560 foreach arg {fpic fPIC} {
561 if [check_no_compiler_messages $arg object {
562 extern int foo (void); extern int bar;
563 int baz (void) { return foo () + bar; }
571 # Return true if the target supports -mpaired-single (as used on MIPS).
573 proc check_effective_target_mpaired_single { } {
574 return [check_no_compiler_messages mpaired_single object {
579 # Return 1 if the current multilib does not generate PIC by default.
581 proc check_effective_target_nonpic { } {
582 return [check_no_compiler_messages nonpic assembly {
589 # Return 1 if the target does not use a status wrapper.
591 proc check_effective_target_unwrapped { } {
592 if { [target_info needs_status_wrapper] != "" \
593 && [target_info needs_status_wrapper] != "0" } {
599 # Return true if iconv is supported on the target. In particular IBM1047.
601 proc check_iconv_available { test_what } {
609 verbose "check_iconv_available compiling testfile $src" 2
610 set f [open $src "w"]
611 # Compile a small test program.
612 puts $f "#include <iconv.h>\n"
613 puts $f "int main (void)\n {\n iconv_t cd; \n"
614 puts $f "cd = iconv_open (\"[lindex $test_what 1]\", \"UTF-8\");\n"
615 puts $f "if (cd == (iconv_t) -1)\n return 1;\n"
616 puts $f "return 0;\n}"
619 # If the tool configuration file has not set libiconv, try "-liconv"
620 if { ![info exists libiconv] } {
621 set libiconv "-liconv"
623 set lines [${tool}_target_compile $src $exe executable "libs=$libiconv" ]
626 if [string match "" $lines] then {
627 # No error messages, everything is OK.
629 set result [${tool}_load "./$exe" "" ""]
630 set status [lindex $result 0]
631 remote_file build delete $exe
633 verbose "check_iconv_available status is <$status>" 2
635 if { $status == "pass" } then {
643 # Return true if named sections are supported on this target.
645 proc check_named_sections_available { } {
646 return [check_no_compiler_messages named_sections assembly {
647 int __attribute__ ((section("whatever"))) foo;
651 # Return 1 if the target supports Fortran real kinds larger than real(8),
654 # When the target name changes, replace the cached result.
656 proc check_effective_target_fortran_large_real { } {
657 global et_fortran_large_real_saved
658 global et_fortran_large_real_target_name
661 if { ![info exists et_fortran_large_real_target_name] } {
662 set et_fortran_large_real_target_name ""
665 # If the target has changed since we set the cached value, clear it.
666 set current_target [current_target_name]
667 if { $current_target != $et_fortran_large_real_target_name } {
668 verbose "check_effective_target_fortran_large_real: `$et_fortran_large_real_target_name' `$current_target'" 2
669 set et_fortran_large_real_target_name $current_target
670 if [info exists et_fortran_large_real_saved] {
671 verbose "check_effective_target_fortran_large_real: removing cached result" 2
672 unset et_fortran_large_real_saved
676 if [info exists et_fortran_large_real_saved] {
677 verbose "check_effective_target_fortran_large_real returning saved $et_fortran_large_real_saved" 2
679 set et_fortran_large_real_saved 0
681 # Set up, compile, and execute a test program using large real
682 # kinds. Include the current process ID in the file names to
683 # prevent conflicts with invocations for multiple testsuites.
684 set src real[pid].f90
687 set f [open $src "w"]
688 puts $f "integer,parameter :: k = &"
689 puts $f " selected_real_kind (precision (0.0_8) + 1)"
690 puts $f "real(kind=k) :: x"
691 puts $f "x = cos (x);"
695 verbose "check_effective_target_fortran_large_real compiling testfile $src" 2
696 set lines [${tool}_target_compile $src $exe executable ""]
699 if [string match "" $lines] then {
700 # No error message, compilation succeeded.
701 remote_file build delete $exe
702 set et_fortran_large_real_saved 1
706 return $et_fortran_large_real_saved
709 # Return 1 if the target supports Fortran integer kinds larger than
710 # integer(8), 0 otherwise.
712 # When the target name changes, replace the cached result.
714 proc check_effective_target_fortran_large_int { } {
715 global et_fortran_large_int_saved
716 global et_fortran_large_int_target_name
719 if { ![info exists et_fortran_large_int_target_name] } {
720 set et_fortran_large_int_target_name ""
723 # If the target has changed since we set the cached value, clear it.
724 set current_target [current_target_name]
725 if { $current_target != $et_fortran_large_int_target_name } {
726 verbose "check_effective_target_fortran_large_int: `$et_fortran_large_int_target_name' `$current_target'" 2
727 set et_fortran_large_int_target_name $current_target
728 if [info exists et_fortran_large_int_saved] {
729 verbose "check_effective_target_fortran_large_int: removing cached result" 2
730 unset et_fortran_large_int_saved
734 if [info exists et_fortran_large_int_saved] {
735 verbose "check_effective_target_fortran_large_int returning saved $et_fortran_large_int_saved" 2
737 set et_fortran_large_int_saved 0
739 # Set up, compile, and execute a test program using large integer
740 # kinds. Include the current process ID in the file names to
741 # prevent conflicts with invocations for multiple testsuites.
745 set f [open $src "w"]
746 puts $f "integer,parameter :: k = &"
747 puts $f " selected_int_kind (range (0_8) + 1)"
748 puts $f "integer(kind=k) :: i"
752 verbose "check_effective_target_fortran_large_int compiling testfile $src" 2
753 set lines [${tool}_target_compile $src $exe executable ""]
756 if [string match "" $lines] then {
757 # No error message, compilation succeeded.
758 remote_file build delete $exe
759 set et_fortran_large_int_saved 1
763 return $et_fortran_large_int_saved
766 # Return 1 if we can statically link libgfortran, 0 otherwise.
768 # When the target name changes, replace the cached result.
770 proc check_effective_target_static_libgfortran { } {
771 global et_static_libgfortran
772 global et_static_libgfortran_target_name
775 if { ![info exists et_static_libgfortran_target_name] } {
776 set et_static_libgfortran_target_name ""
779 # If the target has changed since we set the cached value, clear it.
780 set current_target [current_target_name]
781 if { $current_target != $et_static_libgfortran_target_name } {
782 verbose "check_effective_target_static_libgfortran: `$et_static_libgfortran_target_name' `$current_target'" 2
783 set et_static_libgfortran_target_name $current_target
784 if [info exists et_static_libgfortran_saved] {
785 verbose "check_effective_target_static_libgfortran: removing cached result" 2
786 unset et_static_libgfortran_saved
790 if [info exists et_static_libgfortran_saved] {
791 verbose "check_effective_target_static_libgfortran returning saved $et_static_libgfortran_saved" 2
793 set et_static_libgfortran_saved 0
795 # Set up, compile, and execute a test program using static linking.
796 # Include the current process ID in the file names to prevent
797 # conflicts with invocations for multiple testsuites.
798 set opts "additional_flags=-static"
799 set src static[pid].f
800 set exe static[pid].x
802 set f [open $src "w"]
803 puts $f " print *, 'test'"
807 verbose "check_effective_target_static_libgfortran compiling testfile $src" 2
808 set lines [${tool}_target_compile $src $exe executable "$opts"]
811 if [string match "" $lines] then {
812 # No error message, compilation succeeded.
813 remote_file build delete $exe
814 set et_static_libgfortran_saved 1
818 return $et_static_libgfortran_saved
821 # Return 1 if the target supports executing AltiVec instructions, 0
822 # otherwise. Cache the result.
824 proc check_vmx_hw_available { } {
825 global vmx_hw_available_saved
828 if [info exists vmx_hw_available_saved] {
829 verbose "check_hw_available returning saved $vmx_hw_available_saved" 2
831 set vmx_hw_available_saved 0
833 # Some simulators are known to not support VMX instructions.
834 if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } {
835 verbose "check_hw_available returning 0" 2
836 return $vmx_hw_available_saved
839 # Set up, compile, and execute a test program containing VMX
840 # instructions. Include the current process ID in the file
841 # names to prevent conflicts with invocations for multiple
846 set f [open $src "w"]
847 puts $f "int main() {"
848 puts $f "#ifdef __MACH__"
849 puts $f " asm volatile (\"vor v0,v0,v0\");"
851 puts $f " asm volatile (\"vor 0,0,0\");"
853 puts $f " return 0; }"
856 # Most targets don't require special flags for this test case, but
858 if [istarget *-*-darwin*] {
859 set opts "additional_flags=-maltivec"
864 verbose "check_vmx_hw_available compiling testfile $src" 2
865 set lines [${tool}_target_compile $src $exe executable "$opts"]
868 if [string match "" $lines] then {
869 # No error message, compilation succeeded.
870 set result [${tool}_load "./$exe" "" ""]
871 set status [lindex $result 0]
872 remote_file build delete $exe
873 verbose "check_vmx_hw_available testfile status is <$status>" 2
875 if { $status == "pass" } then {
876 set vmx_hw_available_saved 1
879 verbose "check_vmx_hw_availalble testfile compilation failed" 2
883 return $vmx_hw_available_saved
886 # GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
887 # complex float arguments. This affects gfortran tests that call cabsf
888 # in libm built by an earlier compiler. Return 1 if libm uses the same
889 # argument passing as the compiler under test, 0 otherwise.
891 # When the target name changes, replace the cached result.
893 proc check_effective_target_broken_cplxf_arg { } {
894 global et_broken_cplxf_arg_saved
895 global et_broken_cplxf_arg_target_name
898 # Skip the work for targets known not to be affected.
899 if { ![istarget powerpc64-*-linux*] } {
901 } elseif { [is-effective-target ilp32] } {
905 if { ![info exists et_broken_cplxf_arg_target_name] } {
906 set et_broken_cplxf_arg_target_name ""
909 # If the target has changed since we set the cached value, clear it.
910 set current_target [current_target_name]
911 if { $current_target != $et_broken_cplxf_arg_target_name } {
912 verbose "check_effective_target_broken_cplxf_arg: `$et_broken_cplxf_arg_target_name'" 2
913 set et_broken_cplxf_arg_target_name $current_target
914 if [info exists et_broken_cplxf_arg_saved] {
915 verbose "check_effective_target_broken_cplxf_arg: removing cached result" 2
916 unset et_broken_cplxf_arg_saved
920 if [info exists et_broken_cplxf_arg_saved] {
921 verbose "check_effective_target_broken_cplxf_arg: using cached result" 2
923 set et_broken_cplxf_arg_saved 0
924 # This is only known to affect one target.
925 if { ![istarget powerpc64-*-linux*] || ![is-effective-target lp64] } {
926 set et_broken_cplxf_arg_saved 0
927 verbose "check_effective_target_broken_cplxf_arg: caching 0" 2
928 return $et_broken_cplxf_arg_saved
931 # Set up, compile, and execute a C test program that calls cabsf.
935 set f [open $src "w"]
936 puts $f "#include <complex.h>"
937 puts $f "extern void abort (void);"
938 puts $f "float fabsf (float);"
939 puts $f "float cabsf (_Complex float);"
940 puts $f "int main ()"
942 puts $f " _Complex float cf;"
944 puts $f " cf = 3 + 4.0fi;"
945 puts $f " f = cabsf (cf);"
946 puts $f " if (fabsf (f - 5.0) > 0.0001) abort ();"
951 set lines [${tool}_target_compile $src $exe executable "-lm"]
954 if [string match "" $lines] {
955 # No error message, compilation succeeded.
956 set result [${tool}_load "./$exe" "" ""]
957 set status [lindex $result 0]
958 remote_file build delete $exe
960 verbose "check_effective_target_broken_cplxf_arg: status is <$status>" 2
962 if { $status != "pass" } {
963 set et_broken_cplxf_arg_saved 1
966 verbose "check_effective_target_broken_cplxf_arg: compilation failed" 2
969 return $et_broken_cplxf_arg_saved
972 proc check_alpha_max_hw_available { } {
973 global alpha_max_hw_available_saved
976 if [info exists alpha_max_hw_available_saved] {
977 verbose "check_alpha_max_hw_available returning saved $alpha_max_hw_available_saved" 2
979 set alpha_max_hw_available_saved 0
981 # Set up, compile, and execute a test program probing bit 8 of the
982 # architecture mask, which indicates presence of MAX instructions.
986 set f [open $src "w"]
987 puts $f "int main() { return __builtin_alpha_amask(1<<8) != 0; }"
990 verbose "check_alpha_max_hw_available compiling testfile $src" 2
991 set lines [${tool}_target_compile $src $exe executable ""]
994 if [string match "" $lines] then {
995 # No error message, compilation succeeded.
996 set result [${tool}_load "./$exe" "" ""]
997 set status [lindex $result 0]
998 remote_file build delete $exe
999 verbose "check_alpha_max_hw_available testfile status is <$status>" 2
1001 if { $status == "pass" } then {
1002 set alpha_max_hw_available_saved 1
1005 verbose "check_alpha_max_hw_availalble testfile compilation failed" 2
1009 return $alpha_max_hw_available_saved
1012 # Returns true iff the FUNCTION is available on the target system.
1013 # (This is essentially a Tcl implementation of Autoconf's
1016 proc check_function_available { function } {
1017 set var "${function}_available_saved"
1021 if {![info exists $var]} {
1024 # Check to make sure.
1025 set src "function[pid].c"
1026 set exe "function[pid].exe"
1028 set f [open $src "w"]
1029 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
1030 puts $f "char $function ();\n"
1031 puts $f "int main () { $function (); }"
1034 set lines [${tool}_target_compile $src $exe executable ""]
1038 if {![string match "" $lines]} then {
1040 verbose -log "$function is not available"
1042 verbose -log "$function is available"
1049 # Returns true iff "fork" is available on the target system.
1051 proc check_fork_available {} {
1052 return [check_function_available "fork"]
1055 # Returns true iff "mkfifo" is available on the target system.
1057 proc check_mkfifo_available {} {
1058 if {[istarget *-*-cygwin*]} {
1059 # Cygwin has mkfifo, but support is incomplete.
1063 return [check_function_available "mkfifo"]
1066 # Returns true iff "__cxa_atexit" is used on the target system.
1068 proc check_cxa_atexit_available { } {
1069 global et_cxa_atexit
1070 global et_cxa_atexit_target_name
1073 if { ![info exists et_cxa_atexit_target_name] } {
1074 set et_cxa_atexit_target_name ""
1077 # If the target has changed since we set the cached value, clear it.
1078 set current_target [current_target_name]
1079 if { $current_target != $et_cxa_atexit_target_name } {
1080 verbose "check_cxa_atexit_available: `$et_cxa_atexit_target_name'" 2
1081 set et_cxa_atexit_target_name $current_target
1082 if [info exists et_cxa_atexit] {
1083 verbose "check_cxa_atexit_available: removing cached result" 2
1088 if [info exists et_cxa_atexit] {
1089 verbose "check_cxa_atexit_available: using cached result" 2
1090 } elseif { [istarget "hppa*-*-hpux10*"] } {
1091 # HP-UX 10 doesn't have __cxa_atexit but subsequent test passes.
1096 # Set up, compile, and execute a C++ test program that depends
1097 # on correct ordering of static object destructors. This is
1098 # indicative of the presence and use of __cxa_atexit.
1099 set src cxaatexit[pid].cc
1100 set exe cxaatexit[pid].x
1102 set f [open $src "w"]
1103 puts $f "#include <stdlib.h>"
1104 puts $f "static unsigned int count;"
1107 puts $f " X() { count = 1; }"
1110 puts $f " if (count != 3)"
1112 puts $f " count = 4;"
1117 puts $f " static X x;"
1121 puts $f " Y() { f(); count = 2; }"
1124 puts $f " if (count != 2)"
1126 puts $f " count = 3;"
1130 puts $f "int main()"
1131 puts $f "{ return 0; }"
1134 set lines [${tool}_target_compile $src $exe executable ""]
1137 if [string match "" $lines] {
1138 # No error message, compilation succeeded.
1139 set result [${tool}_load "./$exe" "" ""]
1140 set status [lindex $result 0]
1141 remote_file build delete $exe
1143 verbose "check_cxa_atexit_available: status is <$status>" 2
1145 if { $status == "pass" } {
1149 verbose "check_cxa_atexit_available: compilation failed" 2
1152 return $et_cxa_atexit
1156 # Return 1 if we're generating 32-bit code using default options, 0
1159 proc check_effective_target_ilp32 { } {
1160 return [check_no_compiler_messages ilp32 object {
1161 int dummy[sizeof (int) == 4
1162 && sizeof (void *) == 4
1163 && sizeof (long) == 4 ? 1 : -1];
1167 # Return 1 if we're generating 32-bit or larger integers using default
1168 # options, 0 otherwise.
1170 proc check_effective_target_int32plus { } {
1171 return [check_no_compiler_messages int32plus object {
1172 int dummy[sizeof (int) >= 4 ? 1 : -1];
1176 # Return 1 if we're generating 32-bit or larger pointers using default
1177 # options, 0 otherwise.
1179 proc check_effective_target_ptr32plus { } {
1180 return [check_no_compiler_messages ptr32plus object {
1181 int dummy[sizeof (void *) >= 4 ? 1 : -1];
1185 # Return 1 if we support 32-bit or larger array and structure sizes
1186 # using default options, 0 otherwise.
1188 proc check_effective_target_size32plus { } {
1189 return [check_no_compiler_messages size32plus object {
1194 # Returns 1 if we're generating 16-bit or smaller integers with the
1195 # default options, 0 otherwise.
1197 proc check_effective_target_int16 { } {
1198 return [check_no_compiler_messages int16 object {
1199 int dummy[sizeof (int) < 4 ? 1 : -1];
1203 # Return 1 if we're generating 64-bit code using default options, 0
1206 proc check_effective_target_lp64 { } {
1207 return [check_no_compiler_messages lp64 object {
1208 int dummy[sizeof (int) == 4
1209 && sizeof (void *) == 8
1210 && sizeof (long) == 8 ? 1 : -1];
1214 # Return 1 if the target supports long double larger than double,
1217 proc check_effective_target_large_long_double { } {
1218 return [check_no_compiler_messages large_long_double object {
1219 int dummy[sizeof(long double) > sizeof(double) ? 1 : -1];
1224 # Return 1 if the target supports compiling decimal floating point,
1227 proc check_effective_target_dfp_nocache { } {
1228 verbose "check_effective_target_dfp_nocache: compiling source" 2
1229 set ret [string match "" [get_compiler_messages dfp 0 object {
1230 _Decimal32 x; _Decimal64 y; _Decimal128 z;
1232 verbose "check_effective_target_dfp_nocache: returning $ret" 2
1236 proc check_effective_target_dfprt_nocache { } {
1241 verbose "check_effective_target_dfprt_nocache: compiling source" 2
1242 # Set up, compile, and execute a test program containing decimal
1244 set src dfprt[pid].c
1245 set exe dfprt[pid].x
1247 set f [open $src "w"]
1248 puts $f "_Decimal32 x = 1.2df; _Decimal64 y = 2.3dd; _Decimal128 z;"
1249 puts $f "int main () { z = x + y; return 0; }"
1252 verbose "check_effective_target_dfprt_nocache: compiling testfile $src" 2
1253 set lines [${tool}_target_compile $src $exe executable ""]
1256 if [string match "" $lines] then {
1257 # No error message, compilation succeeded.
1258 set result [${tool}_load "./$exe" "" ""]
1259 set status [lindex $result 0]
1260 remote_file build delete $exe
1261 verbose "check_effective_target_dfprt_nocache: testfile status is <$status>" 2
1262 if { $status == "pass" } then {
1267 verbose "check_effective_target_dfprt_nocache: returning $ret" 2
1270 # Return 1 if the target supports compiling Decimal Floating Point,
1273 # This won't change for different subtargets so cache the result.
1275 proc check_effective_target_dfp { } {
1278 if [info exists et_dfp_saved] {
1279 verbose "check_effective_target_dfp: using cached result" 2
1281 set et_dfp_saved [check_effective_target_dfp_nocache]
1283 verbose "check_effective_target_dfp: returning $et_dfp_saved" 2
1284 return $et_dfp_saved
1287 # Return 1 if the target supports linking and executing Decimal Floating
1288 # Point, # 0 otherwise.
1290 # This won't change for different subtargets so cache the result.
1292 proc check_effective_target_dfprt { } {
1293 global et_dfprt_saved
1296 if [info exists et_dfprt_saved] {
1297 verbose "check_effective_target_dfprt: using cached result" 2
1299 set et_dfprt_saved [check_effective_target_dfprt_nocache]
1301 verbose "check_effective_target_dfprt: returning $et_dfprt_saved" 2
1302 return $et_dfprt_saved
1305 # Return 1 if the target needs a command line argument to enable a SIMD
1308 proc check_effective_target_vect_cmdline_needed { } {
1309 global et_vect_cmdline_needed_saved
1310 global et_vect_cmdline_needed_target_name
1312 if { ![info exists et_vect_cmdline_needed_target_name] } {
1313 set et_vect_cmdline_needed_target_name ""
1316 # If the target has changed since we set the cached value, clear it.
1317 set current_target [current_target_name]
1318 if { $current_target != $et_vect_cmdline_needed_target_name } {
1319 verbose "check_effective_target_vect_cmdline_needed: `$et_vect_cmdline_needed_target_name' `$current_target'" 2
1320 set et_vect_cmdline_needed_target_name $current_target
1321 if { [info exists et_vect_cmdline_needed_saved] } {
1322 verbose "check_effective_target_vect_cmdline_needed: removing cached result" 2
1323 unset et_vect_cmdline_needed_saved
1327 if [info exists et_vect_cmdline_needed_saved] {
1328 verbose "check_effective_target_vect_cmdline_needed: using cached result" 2
1330 set et_vect_cmdline_needed_saved 1
1331 if { [istarget ia64-*-*]
1332 || (([istarget x86_64-*-*] || [istarget i?86-*-*])
1333 && [check_effective_target_lp64])
1334 || ([istarget powerpc*-*-*]
1335 && ([check_effective_target_powerpc_spe]
1336 || [check_effective_target_powerpc_altivec]))} {
1337 set et_vect_cmdline_needed_saved 0
1341 verbose "check_effective_target_vect_cmdline_needed: returning $et_vect_cmdline_needed_saved" 2
1342 return $et_vect_cmdline_needed_saved
1345 # Return 1 if the target supports hardware vectors of int, 0 otherwise.
1347 # This won't change for different subtargets so cache the result.
1349 proc check_effective_target_vect_int { } {
1350 global et_vect_int_saved
1352 if [info exists et_vect_int_saved] {
1353 verbose "check_effective_target_vect_int: using cached result" 2
1355 set et_vect_int_saved 0
1356 if { [istarget i?86-*-*]
1357 || [istarget powerpc*-*-*]
1358 || [istarget spu-*-*]
1359 || [istarget x86_64-*-*]
1360 || [istarget sparc*-*-*]
1361 || [istarget alpha*-*-*]
1362 || [istarget ia64-*-*] } {
1363 set et_vect_int_saved 1
1367 verbose "check_effective_target_vect_int: returning $et_vect_int_saved" 2
1368 return $et_vect_int_saved
1371 # Return 1 if the target supports int->float conversion
1374 proc check_effective_target_vect_intfloat_cvt { } {
1375 global et_vect_intfloat_cvt_saved
1377 if [info exists et_vect_intfloat_cvt_saved] {
1378 verbose "check_effective_target_vect_intfloat_cvt: using cached result" 2
1380 set et_vect_intfloat_cvt_saved 0
1381 if { [istarget i?86-*-*]
1382 || [istarget powerpc*-*-*]
1383 || [istarget x86_64-*-*] } {
1384 set et_vect_intfloat_cvt_saved 1
1388 verbose "check_effective_target_vect_intfloat_cvt: returning $et_vect_intfloat_cvt_saved" 2
1389 return $et_vect_intfloat_cvt_saved
1393 # Return 1 if the target supports float->int conversion
1396 proc check_effective_target_vect_floatint_cvt { } {
1397 global et_vect_floatint_cvt_saved
1399 if [info exists et_vect_floatint_cvt_saved] {
1400 verbose "check_effective_target_vect_floatint_cvt: using cached result" 2
1402 set et_vect_floatint_cvt_saved 0
1403 if { [istarget i?86-*-*]
1404 || [istarget x86_64-*-*] } {
1405 set et_vect_floatint_cvt_saved 1
1409 verbose "check_effective_target_vect_floatint_cvt: returning $et_vect_floatint_cvt_saved" 2
1410 return $et_vect_floatint_cvt_saved
1414 # Return 1 is this is an arm target using 32-bit instructions
1415 proc check_effective_target_arm32 { } {
1416 global et_arm32_saved
1417 global et_arm32_target_name
1418 global compiler_flags
1420 if { ![info exists et_arm32_target_name] } {
1421 set et_arm32_target_name ""
1424 # If the target has changed since we set the cached value, clear it.
1425 set current_target [current_target_name]
1426 if { $current_target != $et_arm32_target_name } {
1427 verbose "check_effective_target_arm32: `$et_arm32_target_name' `$current_target'" 2
1428 set et_arm32_target_name $current_target
1429 if { [info exists et_arm32_saved] } {
1430 verbose "check_effective_target_arm32: removing cached result" 2
1431 unset et_arm32_saved
1435 if [info exists et_arm32_saved] {
1436 verbose "check-effective_target_arm32: using cached result" 2
1438 set et_arm32_saved 0
1439 if { [istarget arm-*-*]
1440 || [istarget strongarm*-*-*]
1441 || [istarget xscale-*-*] } {
1442 if ![string match "*-mthumb *" $compiler_flags] {
1443 set et_arm32_saved 1
1447 verbose "check_effective_target_arm32: returning $et_arm32_saved" 2
1448 return $et_arm32_saved
1451 # Return 1 if this is an ARM target supporting -mfpu=vfp
1452 # -mfloat-abi=softfp. Some multilibs may be incompatible with these
1455 proc check_effective_target_arm_vfp_ok { } {
1456 if { [check_effective_target_arm32] } {
1457 return [check_no_compiler_messages arm_vfp_ok object {
1459 } "-mfpu=vfp -mfloat-abi=softfp"]
1465 # Return 1 if this is a PowerPC target with floating-point registers.
1467 proc check_effective_target_powerpc_fprs { } {
1468 if { [istarget powerpc*-*-*]
1469 || [istarget rs6000-*-*] } {
1470 return [check_no_compiler_messages powerpc_fprs object {
1482 # Return 1 if this is a PowerPC target supporting -maltivec.
1484 proc check_effective_target_powerpc_altivec_ok { } {
1485 if { [istarget powerpc*-*-*]
1486 || [istarget rs6000-*-*] } {
1487 # AltiVec is not supported on Aix.
1488 if { [istarget powerpc*-*-aix*] } {
1491 return [check_no_compiler_messages powerpc_altivec_ok object {
1499 # Return 1 if this is a PowerPC target with SPE enabled.
1501 proc check_effective_target_powerpc_spe { } {
1502 if { [istarget powerpc*-*-*] } {
1503 return [check_no_compiler_messages powerpc_spe object {
1515 # Return 1 if this is a PowerPC target with Altivec enabled.
1517 proc check_effective_target_powerpc_altivec { } {
1518 if { [istarget powerpc*-*-*] } {
1519 return [check_no_compiler_messages powerpc_altivec object {
1531 # Return 1 if the target supports hardware vector shift operation.
1533 proc check_effective_target_vect_shift { } {
1534 global et_vect_shift_saved
1536 if [info exists et_vect_shift_saved] {
1537 verbose "check_effective_target_vect_shift: using cached result" 2
1539 set et_vect_shift_saved 0
1540 if { [istarget powerpc*-*-*]
1541 || [istarget ia64-*-*]
1542 || [istarget i?86-*-*]
1543 || [istarget x86_64-*-*] } {
1544 set et_vect_shift_saved 1
1548 verbose "check_effective_target_vect_shift: returning $et_vect_shift_saved" 2
1549 return $et_vect_shift_saved
1552 # Return 1 if the target supports hardware vectors of long, 0 otherwise.
1554 # This can change for different subtargets so do not cache the result.
1556 proc check_effective_target_vect_long { } {
1557 if { [istarget i?86-*-*]
1558 || ([istarget powerpc*-*-*] && [check_effective_target_ilp32])
1559 || [istarget x86_64-*-*]
1560 || ([istarget sparc*-*-*] && [check_effective_target_ilp32]) } {
1566 verbose "check_effective_target_vect_long: returning $answer" 2
1570 # Return 1 if the target supports hardware vectors of float, 0 otherwise.
1572 # This won't change for different subtargets so cache the result.
1574 proc check_effective_target_vect_float { } {
1575 global et_vect_float_saved
1577 if [info exists et_vect_float_saved] {
1578 verbose "check_effective_target_vect_float: using cached result" 2
1580 set et_vect_float_saved 0
1581 if { [istarget i?86-*-*]
1582 || [istarget powerpc*-*-*]
1583 || [istarget spu-*-*]
1584 || [istarget mipsisa64*-*-*]
1585 || [istarget x86_64-*-*]
1586 || [istarget ia64-*-*] } {
1587 set et_vect_float_saved 1
1591 verbose "check_effective_target_vect_float: returning $et_vect_float_saved" 2
1592 return $et_vect_float_saved
1595 # Return 1 if the target supports hardware vectors of double, 0 otherwise.
1597 # This won't change for different subtargets so cache the result.
1599 proc check_effective_target_vect_double { } {
1600 global et_vect_double_saved
1602 if [info exists et_vect_double_saved] {
1603 verbose "check_effective_target_vect_double: using cached result" 2
1605 set et_vect_double_saved 0
1606 if { [istarget i?86-*-*]
1607 || [istarget x86_64-*-*]
1608 || [istarget spu-*-*] } {
1609 set et_vect_double_saved 1
1613 verbose "check_effective_target_vect_double: returning $et_vect_double_saved" 2
1614 return $et_vect_double_saved
1617 # Return 0 if the target supports hardware comparison of vectors of double, 0 otherwise.
1619 # This won't change for different subtargets so cache the result.
1621 proc check_effective_target_vect_no_compare_double { } {
1622 global et_vect_no_compare_double_saved
1624 if [info exists et_vect_no_compare_double_saved] {
1625 verbose "check_effective_target_vect_no_compare_double: using cached result" 2
1627 set et_vect_no_compare_double_saved 0
1628 if { [istarget spu-*-*] } {
1629 set et_vect_no_compare_double_saved 1
1633 verbose "check_effective_target_vect_no_compare_double: returning $et_vect_no_compare_double_saved" 2
1634 return $et_vect_no_compare_double_saved
1637 # Return 1 if the target plus current options does not support a vector
1638 # max instruction on "int", 0 otherwise.
1640 # This won't change for different subtargets so cache the result.
1642 proc check_effective_target_vect_no_int_max { } {
1643 global et_vect_no_int_max_saved
1645 if [info exists et_vect_no_int_max_saved] {
1646 verbose "check_effective_target_vect_no_int_max: using cached result" 2
1648 set et_vect_no_int_max_saved 0
1649 if { [istarget sparc*-*-*]
1650 || [istarget spu-*-*]
1651 || [istarget alpha*-*-*] } {
1652 set et_vect_no_int_max_saved 1
1655 verbose "check_effective_target_vect_no_int_max: returning $et_vect_no_int_max_saved" 2
1656 return $et_vect_no_int_max_saved
1659 # Return 1 if the target plus current options does not support a vector
1660 # add instruction on "int", 0 otherwise.
1662 # This won't change for different subtargets so cache the result.
1664 proc check_effective_target_vect_no_int_add { } {
1665 global et_vect_no_int_add_saved
1667 if [info exists et_vect_no_int_add_saved] {
1668 verbose "check_effective_target_vect_no_int_add: using cached result" 2
1670 set et_vect_no_int_add_saved 0
1671 # Alpha only supports vector add on V8QI and V4HI.
1672 if { [istarget alpha*-*-*] } {
1673 set et_vect_no_int_add_saved 1
1676 verbose "check_effective_target_vect_no_int_add: returning $et_vect_no_int_add_saved" 2
1677 return $et_vect_no_int_add_saved
1680 # Return 1 if the target plus current options does not support vector
1681 # bitwise instructions, 0 otherwise.
1683 # This won't change for different subtargets so cache the result.
1685 proc check_effective_target_vect_no_bitwise { } {
1686 global et_vect_no_bitwise_saved
1688 if [info exists et_vect_no_bitwise_saved] {
1689 verbose "check_effective_target_vect_no_bitwise: using cached result" 2
1691 set et_vect_no_bitwise_saved 0
1693 verbose "check_effective_target_vect_no_bitwise: returning $et_vect_no_bitwise_saved" 2
1694 return $et_vect_no_bitwise_saved
1697 # Return 1 if the target plus current options supports a vector
1698 # widening summation of *short* args into *int* result, 0 otherwise.
1699 # A target can also support this widening summation if it can support
1700 # promotion (unpacking) from shorts to ints.
1702 # This won't change for different subtargets so cache the result.
1704 proc check_effective_target_vect_widen_sum_hi_to_si { } {
1705 global et_vect_widen_sum_hi_to_si
1707 if [info exists et_vect_widen_sum_hi_to_si_saved] {
1708 verbose "check_effective_target_vect_widen_sum_hi_to_si: using cached result" 2
1710 set et_vect_widen_sum_hi_to_si_saved [check_effective_target_vect_unpack]
1711 if { [istarget powerpc*-*-*]
1712 || [istarget ia64-*-*] } {
1713 set et_vect_widen_sum_hi_to_si_saved 1
1716 verbose "check_effective_target_vect_widen_sum_hi_to_si: returning $et_vect_widen_sum_hi_to_si_saved" 2
1717 return $et_vect_widen_sum_hi_to_si_saved
1720 # Return 1 if the target plus current options supports a vector
1721 # widening summation of *char* args into *short* result, 0 otherwise.
1722 # A target can also support this widening summation if it can support
1723 # promotion (unpacking) from chars to shorts.
1725 # This won't change for different subtargets so cache the result.
1727 proc check_effective_target_vect_widen_sum_qi_to_hi { } {
1728 global et_vect_widen_sum_qi_to_hi
1730 if [info exists et_vect_widen_sum_qi_to_hi_saved] {
1731 verbose "check_effective_target_vect_widen_sum_qi_to_hi: using cached result" 2
1733 set et_vect_widen_sum_qi_to_hi_saved 0
1734 if { [check_effective_target_vect_unpack]
1735 || [istarget ia64-*-*] } {
1736 set et_vect_widen_sum_qi_to_hi_saved 1
1739 verbose "check_effective_target_vect_widen_sum_qi_to_hi: returning $et_vect_widen_sum_qi_to_hi_saved" 2
1740 return $et_vect_widen_sum_qi_to_hi_saved
1743 # Return 1 if the target plus current options supports a vector
1744 # widening summation of *char* args into *int* result, 0 otherwise.
1746 # This won't change for different subtargets so cache the result.
1748 proc check_effective_target_vect_widen_sum_qi_to_si { } {
1749 global et_vect_widen_sum_qi_to_si
1751 if [info exists et_vect_widen_sum_qi_to_si_saved] {
1752 verbose "check_effective_target_vect_widen_sum_qi_to_si: using cached result" 2
1754 set et_vect_widen_sum_qi_to_si_saved 0
1755 if { [istarget powerpc*-*-*] } {
1756 set et_vect_widen_sum_qi_to_si_saved 1
1759 verbose "check_effective_target_vect_widen_sum_qi_to_si: returning $et_vect_widen_sum_qi_to_si_saved" 2
1760 return $et_vect_widen_sum_qi_to_si_saved
1763 # Return 1 if the target plus current options supports a vector
1764 # widening multiplication of *char* args into *short* result, 0 otherwise.
1765 # A target can also support this widening multplication if it can support
1766 # promotion (unpacking) from chars to shorts, and vect_short_mult (non-widening
1767 # multiplication of shorts).
1769 # This won't change for different subtargets so cache the result.
1772 proc check_effective_target_vect_widen_mult_qi_to_hi { } {
1773 global et_vect_widen_mult_qi_to_hi
1775 if [info exists et_vect_widen_mult_qi_to_hi_saved] {
1776 verbose "check_effective_target_vect_widen_mult_qi_to_hi: using cached result" 2
1778 if { [check_effective_target_vect_unpack]
1779 && [check_effective_target_vect_short_mult] } {
1780 set et_vect_widen_mult_qi_to_hi_saved 1
1782 set et_vect_widen_mult_qi_to_hi_saved 0
1784 if { [istarget powerpc*-*-*] } {
1785 set et_vect_widen_mult_qi_to_hi_saved 1
1788 verbose "check_effective_target_vect_widen_mult_qi_to_hi: returning $et_vect_widen_mult_qi_to_hi_saved" 2
1789 return $et_vect_widen_mult_qi_to_hi_saved
1792 # Return 1 if the target plus current options supports a vector
1793 # widening multiplication of *short* args into *int* result, 0 otherwise.
1794 # A target can also support this widening multplication if it can support
1795 # promotion (unpacking) from shorts to ints, and vect_int_mult (non-widening
1796 # multiplication of ints).
1798 # This won't change for different subtargets so cache the result.
1801 proc check_effective_target_vect_widen_mult_hi_to_si { } {
1802 global et_vect_widen_mult_hi_to_si
1804 if [info exists et_vect_widen_mult_hi_to_si_saved] {
1805 verbose "check_effective_target_vect_widen_mult_hi_to_si: using cached result" 2
1807 if { [check_effective_target_vect_unpack]
1808 && [check_effective_target_vect_int_mult] } {
1809 set et_vect_widen_mult_hi_to_si_saved 1
1811 set et_vect_widen_mult_hi_to_si_saved 0
1813 if { [istarget powerpc*-*-*]
1814 || [istarget spu-*-*]
1815 || [istarget i?86-*-*]
1816 || [istarget x86_64-*-*] } {
1817 set et_vect_widen_mult_hi_to_si_saved 1
1820 verbose "check_effective_target_vect_widen_mult_hi_to_si: returning $et_vect_widen_mult_hi_to_si_saved" 2
1821 return $et_vect_widen_mult_hi_to_si_saved
1824 # Return 1 if the target plus current options supports a vector
1825 # dot-product of signed chars, 0 otherwise.
1827 # This won't change for different subtargets so cache the result.
1829 proc check_effective_target_vect_sdot_qi { } {
1830 global et_vect_sdot_qi
1832 if [info exists et_vect_sdot_qi_saved] {
1833 verbose "check_effective_target_vect_sdot_qi: using cached result" 2
1835 set et_vect_sdot_qi_saved 0
1837 verbose "check_effective_target_vect_sdot_qi: returning $et_vect_sdot_qi_saved" 2
1838 return $et_vect_sdot_qi_saved
1841 # Return 1 if the target plus current options supports a vector
1842 # dot-product of unsigned chars, 0 otherwise.
1844 # This won't change for different subtargets so cache the result.
1846 proc check_effective_target_vect_udot_qi { } {
1847 global et_vect_udot_qi
1849 if [info exists et_vect_udot_qi_saved] {
1850 verbose "check_effective_target_vect_udot_qi: using cached result" 2
1852 set et_vect_udot_qi_saved 0
1853 if { [istarget powerpc*-*-*] } {
1854 set et_vect_udot_qi_saved 1
1857 verbose "check_effective_target_vect_udot_qi: returning $et_vect_udot_qi_saved" 2
1858 return $et_vect_udot_qi_saved
1861 # Return 1 if the target plus current options supports a vector
1862 # dot-product of signed shorts, 0 otherwise.
1864 # This won't change for different subtargets so cache the result.
1866 proc check_effective_target_vect_sdot_hi { } {
1867 global et_vect_sdot_hi
1869 if [info exists et_vect_sdot_hi_saved] {
1870 verbose "check_effective_target_vect_sdot_hi: using cached result" 2
1872 set et_vect_sdot_hi_saved 0
1873 if { [istarget powerpc*-*-*]
1874 || [istarget i?86-*-*]
1875 || [istarget x86_64-*-*] } {
1876 set et_vect_sdot_hi_saved 1
1879 verbose "check_effective_target_vect_sdot_hi: returning $et_vect_sdot_hi_saved" 2
1880 return $et_vect_sdot_hi_saved
1883 # Return 1 if the target plus current options supports a vector
1884 # dot-product of unsigned shorts, 0 otherwise.
1886 # This won't change for different subtargets so cache the result.
1888 proc check_effective_target_vect_udot_hi { } {
1889 global et_vect_udot_hi
1891 if [info exists et_vect_udot_hi_saved] {
1892 verbose "check_effective_target_vect_udot_hi: using cached result" 2
1894 set et_vect_udot_hi_saved 0
1895 if { [istarget powerpc*-*-*] } {
1896 set et_vect_udot_hi_saved 1
1899 verbose "check_effective_target_vect_udot_hi: returning $et_vect_udot_hi_saved" 2
1900 return $et_vect_udot_hi_saved
1904 # Return 1 if the target plus current options supports a vector
1905 # demotion (packing) of shorts (to chars) and ints (to shorts)
1906 # using modulo arithmetic, 0 otherwise.
1908 # This won't change for different subtargets so cache the result.
1910 proc check_effective_target_vect_pack_trunc { } {
1911 global et_vect_pack_trunc
1913 if [info exists et_vect_pack_trunc_saved] {
1914 verbose "check_effective_target_vect_pack_trunc: using cached result" 2
1916 set et_vect_pack_trunc_saved 0
1917 if { [istarget powerpc*-*-*]
1918 || [istarget i?86-*-*]
1919 || [istarget x86_64-*-*] } {
1920 set et_vect_pack_trunc_saved 1
1923 verbose "check_effective_target_vect_pack_trunc: returning $et_vect_pack_trunc_saved" 2
1924 return $et_vect_pack_trunc_saved
1927 # Return 1 if the target plus current options supports a vector
1928 # promotion (unpacking) of chars (to shorts) and shorts (to ints), 0 otherwise.
1930 # This won't change for different subtargets so cache the result.
1932 proc check_effective_target_vect_unpack { } {
1933 global et_vect_unpack
1935 if [info exists et_vect_unpack_saved] {
1936 verbose "check_effective_target_vect_unpack: using cached result" 2
1938 set et_vect_unpack_saved 0
1939 if { [istarget powerpc*-*-*]
1940 || [istarget i?86-*-*]
1941 || [istarget x86_64-*-*] } {
1942 set et_vect_unpack_saved 1
1945 verbose "check_effective_target_vect_unpack: returning $et_vect_unpack_saved" 2
1946 return $et_vect_unpack_saved
1949 # Return 1 if the target plus current options does not support a vector
1950 # alignment mechanism, 0 otherwise.
1952 # This won't change for different subtargets so cache the result.
1954 proc check_effective_target_vect_no_align { } {
1955 global et_vect_no_align_saved
1957 if [info exists et_vect_no_align_saved] {
1958 verbose "check_effective_target_vect_no_align: using cached result" 2
1960 set et_vect_no_align_saved 0
1961 if { [istarget mipsisa64*-*-*]
1962 || [istarget sparc*-*-*]
1963 || [istarget ia64-*-*] } {
1964 set et_vect_no_align_saved 1
1967 verbose "check_effective_target_vect_no_align: returning $et_vect_no_align_saved" 2
1968 return $et_vect_no_align_saved
1971 # Return 1 if the target supports vector conditional operations, 0 otherwise.
1973 proc check_effective_target_vect_condition { } {
1974 global et_vect_cond_saved
1976 if [info exists et_vect_cond_saved] {
1977 verbose "check_effective_target_vect_cond: using cached result" 2
1979 set et_vect_cond_saved 0
1980 if { [istarget powerpc*-*-*]
1981 || [istarget ia64-*-*]
1982 || [istarget i?86-*-*]
1983 || [istarget x86_64-*-*] } {
1984 set et_vect_cond_saved 1
1988 verbose "check_effective_target_vect_cond: returning $et_vect_cond_saved" 2
1989 return $et_vect_cond_saved
1992 # Return 1 if the target supports vector char multiplication, 0 otherwise.
1994 proc check_effective_target_vect_char_mult { } {
1995 global et_vect_char_mult_saved
1997 if [info exists et_vect_char_mult_saved] {
1998 verbose "check_effective_target_vect_char_mult: using cached result" 2
2000 set et_vect_char_mult_saved 0
2001 if { [istarget ia64-*-*]
2002 || [istarget i?86-*-*]
2003 || [istarget x86_64-*-*] } {
2004 set et_vect_char_mult_saved 1
2008 verbose "check_effective_target_vect_char_mult: returning $et_vect_char_mult_saved" 2
2009 return $et_vect_char_mult_saved
2012 # Return 1 if the target supports vector short multiplication, 0 otherwise.
2014 proc check_effective_target_vect_short_mult { } {
2015 global et_vect_short_mult_saved
2017 if [info exists et_vect_short_mult_saved] {
2018 verbose "check_effective_target_vect_short_mult: using cached result" 2
2020 set et_vect_short_mult_saved 0
2021 if { [istarget ia64-*-*]
2022 || [istarget i?86-*-*]
2023 || [istarget x86_64-*-*] } {
2024 set et_vect_short_mult_saved 1
2028 verbose "check_effective_target_vect_short_mult: returning $et_vect_short_mult_saved" 2
2029 return $et_vect_short_mult_saved
2032 # Return 1 if the target supports vector int multiplication, 0 otherwise.
2034 proc check_effective_target_vect_int_mult { } {
2035 global et_vect_int_mult_saved
2037 if [info exists et_vect_int_mult_saved] {
2038 verbose "check_effective_target_vect_int_mult: using cached result" 2
2040 set et_vect_int_mult_saved 0
2041 if { [istarget powerpc*-*-*]
2042 || [istarget spu-*-*]
2043 || [istarget i?86-*-*]
2044 || [istarget x86_64-*-*] } {
2045 set et_vect_int_mult_saved 1
2049 verbose "check_effective_target_vect_int_mult: returning $et_vect_int_mult_saved" 2
2050 return $et_vect_int_mult_saved
2053 # Return 1 if the target supports vector even/odd elements extraction, 0 otherwise.
2055 proc check_effective_target_vect_extract_even_odd { } {
2056 global et_vect_extract_even_odd_saved
2058 if [info exists et_vect_extract_even_odd_saved] {
2059 verbose "check_effective_target_vect_extract_even_odd: using cached result" 2
2061 set et_vect_extract_even_odd_saved 0
2062 if { [istarget powerpc*-*-*] } {
2063 set et_vect_extract_even_odd_saved 1
2067 verbose "check_effective_target_vect_extract_even_odd: returning $et_vect_extract_even_odd_saved" 2
2068 return $et_vect_extract_even_odd_saved
2071 # Return 1 if the target supports vector interleaving, 0 otherwise.
2073 proc check_effective_target_vect_interleave { } {
2074 global et_vect_interleave_saved
2076 if [info exists et_vect_interleave_saved] {
2077 verbose "check_effective_target_vect_interleave: using cached result" 2
2079 set et_vect_interleave_saved 0
2080 if { [istarget powerpc*-*-*]
2081 || [istarget i?86-*-*]
2082 || [istarget x86_64-*-*] } {
2083 set et_vect_interleave_saved 1
2087 verbose "check_effective_target_vect_interleave: returning $et_vect_interleave_saved" 2
2088 return $et_vect_interleave_saved
2091 # Return 1 if the target supports section-anchors
2093 proc check_effective_target_section_anchors { } {
2094 global et_section_anchors_saved
2096 if [info exists et_section_anchors_saved] {
2097 verbose "check_effective_target_section_anchors: using cached result" 2
2099 set et_section_anchors_saved 0
2100 if { [istarget powerpc*-*-*] } {
2101 set et_section_anchors_saved 1
2105 verbose "check_effective_target_section_anchors: returning $et_section_anchors_saved" 2
2106 return $et_section_anchors_saved
2109 # Return 1 if the target supports atomic operations on "int" and "long".
2111 proc check_effective_target_sync_int_long { } {
2112 global et_sync_int_long_saved
2114 if [info exists et_sync_int_long_saved] {
2115 verbose "check_effective_target_sync_int_long: using cached result" 2
2117 set et_sync_int_long_saved 0
2118 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
2119 # load-reserved/store-conditional instructions.
2120 if { [istarget ia64-*-*]
2121 || [istarget i?86-*-*]
2122 || [istarget x86_64-*-*]
2123 || [istarget alpha*-*-*]
2124 || [istarget s390*-*-*]
2125 || [istarget powerpc*-*-*]
2126 || [istarget sparc64-*-*]
2127 || [istarget sparcv9-*-*] } {
2128 set et_sync_int_long_saved 1
2132 verbose "check_effective_target_sync_int_long: returning $et_sync_int_long_saved" 2
2133 return $et_sync_int_long_saved
2136 # Return 1 if the target supports atomic operations on "char" and "short".
2138 proc check_effective_target_sync_char_short { } {
2139 global et_sync_char_short_saved
2141 if [info exists et_sync_char_short_saved] {
2142 verbose "check_effective_target_sync_char_short: using cached result" 2
2144 set et_sync_char_short_saved 0
2145 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
2146 # load-reserved/store-conditional instructions.
2147 if { [istarget ia64-*-*]
2148 || [istarget i?86-*-*]
2149 || [istarget x86_64-*-*]
2150 || [istarget alpha*-*-*]
2151 || [istarget s390*-*-*]
2152 || [istarget powerpc*-*-*]
2153 || [istarget sparc64-*-*]
2154 || [istarget sparcv9-*-*] } {
2155 set et_sync_char_short_saved 1
2159 verbose "check_effective_target_sync_char_short: returning $et_sync_char_short_saved" 2
2160 return $et_sync_char_short_saved
2163 # Return 1 if the target uses a ColdFire FPU.
2165 proc check_effective_target_coldfire_fpu { } {
2166 return [check_no_compiler_messages coldfire_fpu assembly {
2173 # Return true if this is a uClibc target.
2175 proc check_effective_target_uclibc {} {
2176 return [check_no_compiler_messages uclibc object {
2177 #include <features.h>
2178 #if !defined (__UCLIBC__)
2184 # Return true if this is a uclibc target and if the uclibc feature
2185 # described by __$feature__ is not present.
2187 proc check_missing_uclibc_feature {feature} {
2188 return [check_no_compiler_messages $feature object "
2189 #include <features.h>
2190 #if !defined (__UCLIBC) || defined (__${feature}__)
2196 # Return true if this is a Newlib target.
2198 proc check_effective_target_newlib {} {
2199 return [check_no_compiler_messages newlib object {
2205 # (a) an error of a few ULP is expected in string to floating-point
2206 # conversion functions; and
2207 # (b) overflow is not always detected correctly by those functions.
2209 proc check_effective_target_lax_strtofp {} {
2210 # By default, assume that all uClibc targets suffer from this.
2211 return [check_effective_target_uclibc]
2214 # Return 1 if this is a target for which wcsftime is a dummy
2215 # function that always returns 0.
2217 proc check_effective_target_dummy_wcsftime {} {
2218 # By default, assume that all uClibc targets suffer from this.
2219 return [check_effective_target_uclibc]
2222 # Return 1 if constructors with initialization priority arguments are
2223 # supposed on this target.
2225 proc check_effective_target_init_priority {} {
2226 return [check_no_compiler_messages init_priority assembly "
2227 void f() __attribute__((constructor (1000)));
2232 # Return 1 if the target matches the effective target 'arg', 0 otherwise.
2233 # This can be used with any check_* proc that takes no argument and
2234 # returns only 1 or 0. It could be used with check_* procs that take
2235 # arguments with keywords that pass particular arguments.
2237 proc is-effective-target { arg } {
2239 if { [info procs check_effective_target_${arg}] != [list] } {
2240 set selected [check_effective_target_${arg}]
2243 "vmx_hw" { set selected [check_vmx_hw_available] }
2244 "named_sections" { set selected [check_named_sections_available] }
2245 "gc_sections" { set selected [check_gc_sections_available] }
2246 "cxa_atexit" { set selected [check_cxa_atexit_available] }
2247 default { error "unknown effective target keyword `$arg'" }
2250 verbose "is-effective-target: $arg $selected" 2
2254 # Return 1 if the argument is an effective-target keyword, 0 otherwise.
2256 proc is-effective-target-keyword { arg } {
2257 if { [info procs check_effective_target_${arg}] != [list] } {
2260 # These have different names for their check_* procs.
2262 "vmx_hw" { return 1 }
2263 "named_sections" { return 1 }
2264 "gc_sections" { return 1 }
2265 "cxa_atexit" { return 1 }
2266 default { return 0 }
2271 # Return 1 if target default to short enums
2273 proc check_effective_target_short_enums { } {
2274 return [check_no_compiler_messages short_enums assembly {
2276 int s[sizeof (enum foo) == 1 ? 1 : -1];
2280 # Return 1 if target supports merging string constants at link time.
2282 proc check_effective_target_string_merging { } {
2283 return [check_no_messages_and_pattern string_merging \
2284 "rodata\\.str" assembly {
2285 const char *var = "String";
2289 # Return 1 if target has the basic signed and unsigned types in
2290 # <stdint.h>, 0 otherwise.
2292 proc check_effective_target_stdint_types { } {
2293 return [check_no_compiler_messages stdint_types assembly {
2295 int8_t a; int16_t b; int32_t c; int64_t d;
2296 uint8_t e; uint16_t f; uint32_t g; uint64_t h;
2300 # Return 1 if programs are intended to be run on a simulator
2301 # (i.e. slowly) rather than hardware (i.e. fast).
2303 proc check_effective_target_simulator { } {
2305 # All "src/sim" simulators set this one.
2306 if [board_info target exists is_simulator] {
2307 return [board_info target is_simulator]
2310 # The "sid" simulators don't set that one, but at least they set
2312 if [board_info target exists slow_simulator] {
2313 return [board_info target slow_simulator]
2319 # Return 1 if the target is a VxWorks RTP.
2321 proc check_effective_target_vxworks_kernel { } {
2322 return [check_no_compiler_messages vxworks_kernel assembly {
2323 #if !defined __vxworks || defined __RTP__
2329 # Return 1 if the target is expected to provide wide character support.
2331 proc check_effective_target_wchar { } {
2332 if {[check_missing_uclibc_feature UCLIBC_HAS_WCHAR]} {
2335 return [check_no_compiler_messages wchar assembly {