-# Copyright (C) 1999, 2001, 2003, 2004, 2005, 2006
-# Free Software Foundation, Inc.
+# Copyright (C) 1999, 2001, 2003, 2004, 2005, 2006, 2007
+# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
# Please email any bugs, comments, and/or additions to this file to:
# gcc-patches@gcc.gnu.org
# This file defines procs for determining features supported by the target.
-# Try to compile some code and return the messages printed by the compiler,
-# and optionally the contents for assembly files. Either a string or
-# a list of two strings are returned, depending on WANT_OUTPUT.
+# Try to compile the code given by CONTENTS into an output file of
+# type TYPE, where TYPE is as for target_compile. Return a list
+# whose first element contains the compiler messages and whose
+# second element is the name of the output file.
#
-# BASENAME is a basename to use for temporary files.
-# WANT_OUTPUT is a flag which is 0 to request returning just the
-# compiler messages, or 1 to return the messages and the contents
-# of the assembly file. TYPE should be "assembly" if WANT_OUTPUT
-# is set.
-# TYPE is the type of compilation to perform (see target_compile).
-# CONTENTS gives the contents of the input file.
-# The rest is optional:
-# OPTIONS: additional compiler options to use.
-proc get_compiler_messages {basename want_output type contents args} {
+# BASENAME is a prefix to use for source and output files.
+# If ARGS is not empty, its first element is a string that
+# should be added to the command line.
+#
+# Assume by default that CONTENTS is C code. C++ code should contain
+# "// C++" and Fortran code should contain "! Fortran".
+proc check_compile {basename type contents args} {
global tool
if { [llength $args] > 0 } {
- set options "additional_flags=[lindex $args 0]"
+ set options [list "additional_flags=[lindex $args 0]"]
} else {
set options ""
}
-
- set src ${basename}[pid].c
- switch $type {
+ switch -glob -- $contents {
+ "*! Fortran*" { set src ${basename}[pid].f90 }
+ "*// C++*" { set src ${basename}[pid].cc }
+ default { set src ${basename}[pid].c }
+ }
+ set compile_type $type
+ switch -glob $type {
assembly { set output ${basename}[pid].s }
object { set output ${basename}[pid].o }
+ executable { set output ${basename}[pid].exe }
+ "rtl-*" {
+ set output ${basename}[pid].s
+ lappend options "additional_flags=-fdump-$type"
+ set compile_type assembly
+ }
}
set f [open $src "w"]
puts $f $contents
close $f
- set lines [${tool}_target_compile $src $output $type "$options"]
+ set lines [${tool}_target_compile $src $output $compile_type "$options"]
file delete $src
- if { $want_output } {
- if { $type != "assembly" } {
- error "WANT_OUTPUT can only be used with assembly output"
- } elseif { ![string match "" $lines] } {
- # An error occurred.
- set result [list $lines ""]
- } else {
- set text ""
- set chan [open "$output"]
- while {[gets $chan line] >= 0} {
- append text "$line\n"
- }
- close $chan
- set result [list $lines $text]
- }
- } else {
- set result $lines
+ set scan_output $output
+ # Don't try folding this into the switch above; calling "glob" before the
+ # file is created won't work.
+ if [regexp "rtl-(.*)" $type dummy rtl_type] {
+ set scan_output "[glob $src.\[0-9\]\[0-9\]\[0-9\]r.$rtl_type]"
+ file delete $output
}
- remote_file build delete $output
- return $result
+ return [list $lines $scan_output]
}
proc current_target_name { } {
}
# Implement an effective-target check for property PROP by invoking
-# the compiler and seeing if it prints any messages. Assume that the
-# property holds if the compiler doesn't print anything. The other
-# arguments are as for get_compiler_messages, starting with TYPE.
-proc check_no_compiler_messages {prop args} {
+# the Tcl command ARGS and seeing if it returns true.
+
+proc check_cached_effective_target { prop args } {
global et_cache
set target [current_target_name]
if {![info exists et_cache($prop,target)]
|| $et_cache($prop,target) != $target} {
- verbose "check_no_compiler_messages $prop: compiling source for $target" 2
+ verbose "check_cached_effective_target $prop: checking $target" 2
set et_cache($prop,target) $target
- set et_cache($prop,value) \
- [string match "" [eval get_compiler_messages $prop 0 $args]]
+ set et_cache($prop,value) [uplevel eval $args]
}
set value $et_cache($prop,value)
- verbose "check_no_compiler_messages $prop: returning $value for $target" 2
+ verbose "check_cached_effective_target $prop: returning $value for $target" 2
return $value
}
-# Similar to check_no_compiler_messages, but also verify that the regular
-# expression PATTERN matches the compiler's output.
+# Like check_compile, but delete the output file and return true if the
+# compiler printed no messages.
+proc check_no_compiler_messages_nocache {args} {
+ set result [eval check_compile $args]
+ set lines [lindex $result 0]
+ set output [lindex $result 1]
+ remote_file build delete $output
+ return [string match "" $lines]
+}
+
+# Like check_no_compiler_messages_nocache, but cache the result.
+# PROP is the property we're checking, and doubles as a prefix for
+# temporary filenames.
+proc check_no_compiler_messages {prop args} {
+ return [check_cached_effective_target $prop {
+ eval [list check_no_compiler_messages_nocache $prop] $args
+ }]
+}
+
+# Like check_compile, but return true if the compiler printed no
+# messages and if the contents of the output file satisfy PATTERN.
+# If PATTERN has the form "!REGEXP", the contents satisfy it if they
+# don't match regular expression REGEXP, otherwise they satisfy it
+# if they do match regular expression PATTERN. (PATTERN can start
+# with something like "[!]" if the regular expression needs to match
+# "!" as the first character.)
+#
+# Delete the output file before returning. The other arguments are
+# as for check_compile.
+proc check_no_messages_and_pattern_nocache {basename pattern args} {
+ global tool
+
+ set result [eval [list check_compile $basename] $args]
+ set lines [lindex $result 0]
+ set output [lindex $result 1]
+
+ set ok 0
+ if { [string match "" $lines] } {
+ set chan [open "$output"]
+ set invert [regexp {^!(.*)} $pattern dummy pattern]
+ set ok [expr { [regexp $pattern [read $chan]] != $invert }]
+ close $chan
+ }
+
+ remote_file build delete $output
+ return $ok
+}
+
+# Like check_no_messages_and_pattern_nocache, but cache the result.
+# PROP is the property we're checking, and doubles as a prefix for
+# temporary filenames.
proc check_no_messages_and_pattern {prop pattern args} {
- global et_cache
+ return [check_cached_effective_target $prop {
+ eval [list check_no_messages_and_pattern_nocache $prop $pattern] $args
+ }]
+}
- set target [current_target_name]
- if {![info exists et_cache($prop,target)]
- || $et_cache($prop,target) != $target} {
- verbose "check_no_messages_and_pattern $prop: compiling source for $target" 2
- set et_cache($prop,target) $target
- set results [eval get_compiler_messages $prop 1 $args]
- set et_cache($prop,value) \
- [expr [string match "" [lindex $results 0]] \
- && [regexp $pattern [lindex $results 1]]]
+# Try to compile and run an executable from code CONTENTS. Return true
+# if the compiler reports no messages and if execution "passes" in the
+# usual DejaGNU sense. The arguments are as for check_compile, with
+# TYPE implicitly being "executable".
+proc check_runtime_nocache {basename contents args} {
+ global tool
+
+ set result [eval [list check_compile $basename executable $contents] $args]
+ set lines [lindex $result 0]
+ set output [lindex $result 1]
+
+ set ok 0
+ if { [string match "" $lines] } {
+ # No error messages, everything is OK.
+ set result [remote_load target "./$output" "" ""]
+ set status [lindex $result 0]
+ verbose "check_runtime_nocache $basename: status is <$status>" 2
+ if { $status == "pass" } {
+ set ok 1
+ }
}
- set value $et_cache($prop,value)
- verbose "check_no_messages_and_pattern $prop: returning $value for $target" 2
- return $value
+ remote_file build delete $output
+ return $ok
+}
+
+# Like check_runtime_nocache, but cache the result. PROP is the
+# property we're checking, and doubles as a prefix for temporary
+# filenames.
+proc check_runtime {prop args} {
+ global tool
+
+ return [check_cached_effective_target $prop {
+ eval [list check_runtime_nocache $prop] $args
+ }]
}
###############################
# HP-UX 10.X doesn't support it
- if { [regexp "hppa.*hpux10" $target_triplet] } {
+ if { [istarget "hppa*-*-hpux10*"] } {
return 0
}
return 0
}
+ # elf2flt uses -q (--emit-relocs), which is incompatible with
+ # --gc-sections.
+ if { [board_info target exists ldflags]
+ && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
+ set gc_sections_available_saved 0
+ return 0
+ }
+
+ # VxWorks kernel modules are relocatable objects linked with -r,
+ # while RTP executables are linked with -q (--emit-relocs).
+ # Both of these options are incompatible with --gc-sections.
+ if { [istarget *-*-vxworks*] } {
+ set gc_sections_available_saved 0
+ return 0
+ }
+
# Check if the ld used by gcc supports --gc-sections.
set gcc_spec [${tool}_target_compile "-dumpspecs" "" "none" ""]
regsub ".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
return 0
}
+ # MinGW does not support -p.
+ if { [istarget *-*-mingw*] && [lindex $test_what 1] == "-p" } {
+ return 0
+ }
+
# At present, there is no profiling support on NetWare.
if { [istarget *-*-netware*] } {
return 0
}
+ # uClibc does not have gcrt1.o.
+ if { [check_effective_target_uclibc]
+ && ([lindex $test_what 1] == "-p"
+ || [lindex $test_what 1] == "-pg") } {
+ return 0
+ }
+
# Now examine the cache variable.
if {![info exists profiling_available_saved]} {
# Some targets don't have any implementation of __bb_init_func or are
|| [istarget arm*-*-eabi*]
|| [istarget arm*-*-elf]
|| [istarget arm*-*-symbianelf*]
+ || [istarget bfin-*-*]
|| [istarget powerpc-*-eabi*]
|| [istarget strongarm*-*-elf]
|| [istarget xscale*-*-elf]
|| [istarget cris-*-*]
+ || [istarget crisv32-*-*]
+ || [istarget fido-*-elf]
|| [istarget h8300-*-*]
|| [istarget m32c-*-elf]
|| [istarget m68k-*-elf]
- || [istarget mips*-*-elf]
+ || [istarget m68k-*-uclinux*]
+ || [istarget mips*-*-elf*]
+ || [istarget xstormy16-*]
|| [istarget xtensa-*-elf]
+ || [istarget *-*-vxworks*]
|| [istarget *-*-windiss] } {
set profiling_available_saved 0
} else {
# This won't change for different subtargets so cache the result.
proc check_effective_target_tls {} {
- global et_tls_saved
-
- if [info exists et_tls_saved] {
- verbose "check_effective_target_tls: using cached result" 2
- } else {
- set et_tls_saved 1
+ return [check_no_compiler_messages tls assembly {
+ __thread int i;
+ int f (void) { return i; }
+ void g (int j) { i = j; }
+ }]
+}
- set src tls[pid].c
- set asm tls[pid].S
- verbose "check_effective_target_tls: compiling testfile $src" 2
- set f [open $src "w"]
- # Compile a small test program.
- puts $f "__thread int i;\n"
- close $f
+# Return 1 if *native* thread local storage (TLS) is supported, 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
- # Test for thread-local data supported by the platform.
- set comp_output \
- [target_compile $src $asm assembly ""]
- file delete $src
- if { [string match "*not supported*" $comp_output] } {
- set et_tls_saved 0
- }
- remove-build-file $asm
- }
- verbose "check_effective_target_tls: returning $et_tls_saved" 2
- return $et_tls_saved
+proc check_effective_target_tls_native {} {
+ return [check_no_messages_and_pattern tls_native "!emutls" assembly {
+ __thread int i;
+ int f (void) { return i; }
+ void g (int j) { i = j; }
+ }]
}
# Return 1 if TLS executables can run correctly, 0 otherwise.
# This won't change for different subtargets so cache the result.
proc check_effective_target_tls_runtime {} {
- global et_tls_runtime_saved
-
- if [info exists et_tls_runtime_saved] {
- verbose "check_effective_target_tls_runtime: using cached result" 2
- } else {
- set et_tls_runtime_saved 0
-
- set src tls_runtime[pid].c
- set exe tls_runtime[pid].x
- verbose "check_effective_target_tls_runtime: compiling testfile $src" 2
- set f [open $src "w"]
- # Compile a small test program.
- puts $f "__thread int thr = 0;\n"
- puts $f "int main(void)\n {\n return thr;\n}"
- close $f
-
- set comp_output \
- [target_compile $src $exe executable ""]
- file delete $src
-
- if [string match "" $comp_output] then {
- # No error messages, everything is OK.
-
- set result [remote_load target "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
-
- verbose "check_effective_target_tls_runtime status is <$status>" 2
-
- if { $status == "pass" } {
- set et_tls_runtime_saved 1
- }
-
- verbose "check_effective_target_tls_runtime: returning $et_tls_runtime_saved" 2
- }
- }
-
- return $et_tls_runtime_saved
+ return [check_runtime tls_runtime {
+ __thread int thr = 0;
+ int main (void) { return thr; }
+ }]
}
# Return 1 if compilation with -fopenmp is error-free for trivial
} "-fopenmp"]
}
+# Return 1 if compilation with -pthread is error-free for trivial
+# code, 0 otherwise.
+
+proc check_effective_target_pthread {} {
+ return [check_no_compiler_messages pthread object {
+ void foo (void) { }
+ } "-pthread"]
+}
+
+# Return 1 if the target supports -fstack-protector
+proc check_effective_target_fstack_protector {} {
+ return [check_runtime fstack_protector {
+ int main (void) { return 0; }
+ } "-fstack-protector"]
+}
+
# Return 1 if compilation with -freorder-blocks-and-partition is error-free
# for trivial code, 0 otherwise.
} "-mpaired-single"]
}
-# Return true if iconv is supported on the target. In particular IBM1047.
+# Return true if the target has access to FPU instructions.
-proc check_iconv_available { test_what } {
- global tool
- global libiconv
+proc check_effective_target_hard_float { } {
+ if { [istarget mips*-*-*] } {
+ return [check_no_compiler_messages hard_float assembly {
+ #if (defined __mips_soft_float || defined __mips16)
+ #error FOO
+ #endif
+ }]
+ }
- set result ""
+ # The generic test equates hard_float with "no call for adding doubles".
+ return [check_no_messages_and_pattern hard_float "!\\(call" rtl-expand {
+ double a (double b, double c) { return b + c; }
+ }]
+}
- set src iconv[pid].c
- set exe iconv[pid].x
- verbose "check_iconv_available compiling testfile $src" 2
- set f [open $src "w"]
- # Compile a small test program.
- puts $f "#include <iconv.h>\n"
- puts $f "int main (void)\n {\n iconv_t cd; \n"
- puts $f "cd = iconv_open (\"[lindex $test_what 1]\", \"UTF-8\");\n"
- puts $f "if (cd == (iconv_t) -1)\n return 1;\n"
- puts $f "return 0;\n}"
- close $f
+# Return true if the target is a 64-bit MIPS target.
- # If the tool configuration file has not set libiconv, try "-liconv"
- if { ![info exists libiconv] } {
- set libiconv "-liconv"
- }
- set lines [${tool}_target_compile $src $exe executable "libs=$libiconv" ]
- file delete $src
+proc check_effective_target_mips64 { } {
+ return [check_no_compiler_messages mips64 assembly {
+ #ifndef __mips64
+ #error FOO
+ #endif
+ }]
+}
- if [string match "" $lines] then {
- # No error messages, everything is OK.
+# Return true if the target is a MIPS target that does not produce
+# MIPS16 code.
- set result [${tool}_load "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
+proc check_effective_target_nomips16 { } {
+ return [check_no_compiler_messages nomips16 object {
+ #ifndef __mips
+ #error FOO
+ #else
+ /* A cheap way of testing for -mflip-mips16. */
+ void foo (void) { asm ("addiu $20,$20,1"); }
+ void bar (void) { asm ("addiu $20,$20,1"); }
+ #endif
+ }]
+}
- verbose "check_iconv_available status is <$status>" 2
+# Add the options needed for MIPS16 function attributes. At the moment,
+# we don't support MIPS16 PIC.
- if { $status == "pass" } then {
- return 1
- }
+proc add_options_for_mips16_attribute { flags } {
+ return "$flags -mno-abicalls -fno-pic"
+}
+
+# Return true if we can force a mode that allows MIPS16 code generation.
+# We don't support MIPS16 PIC, and only support MIPS16 -mhard-float
+# for o32 and o64.
+
+proc check_effective_target_mips16_attribute { } {
+ return [check_no_compiler_messages mips16_attribute assembly {
+ #ifdef PIC
+ #error FOO
+ #endif
+ #if defined __mips_hard_float \
+ && (!defined _ABIO32 || _MIPS_SIM != _ABIO32) \
+ && (!defined _ABIO64 || _MIPS_SIM != _ABIO64)
+ #error FOO
+ #endif
+ } [add_options_for_mips16_attribute ""]]
+}
+
+# Return 1 if the current multilib does not generate PIC by default.
+
+proc check_effective_target_nonpic { } {
+ return [check_no_compiler_messages nonpic assembly {
+ #if __PIC__
+ #error FOO
+ #endif
+ }]
+}
+
+# Return 1 if the target does not use a status wrapper.
+
+proc check_effective_target_unwrapped { } {
+ if { [target_info needs_status_wrapper] != "" \
+ && [target_info needs_status_wrapper] != "0" } {
+ return 0
}
+ return 1
+}
- return 0
+# Return true if iconv is supported on the target. In particular IBM1047.
+
+proc check_iconv_available { test_what } {
+ global libiconv
+
+ # If the tool configuration file has not set libiconv, try "-liconv"
+ if { ![info exists libiconv] } {
+ set libiconv "-liconv"
+ }
+ set test_what [lindex $test_what 1]
+ return [check_runtime_nocache $test_what [subst {
+ #include <iconv.h>
+ int main (void)
+ {
+ iconv_t cd;
+
+ cd = iconv_open ("$test_what", "UTF-8");
+ if (cd == (iconv_t) -1)
+ return 1;
+ return 0;
+ }
+ }] $libiconv]
}
# Return true if named sections are supported on this target.
# When the target name changes, replace the cached result.
proc check_effective_target_fortran_large_real { } {
- global et_fortran_large_real_saved
- global et_fortran_large_real_target_name
- global tool
-
- if { ![info exists et_fortran_large_real_target_name] } {
- set et_fortran_large_real_target_name ""
- }
-
- # If the target has changed since we set the cached value, clear it.
- set current_target [current_target_name]
- if { $current_target != $et_fortran_large_real_target_name } {
- verbose "check_effective_target_fortran_large_real: `$et_fortran_large_real_target_name' `$current_target'" 2
- set et_fortran_large_real_target_name $current_target
- if [info exists et_fortran_large_real_saved] {
- verbose "check_effective_target_fortran_large_real: removing cached result" 2
- unset et_fortran_large_real_saved
- }
- }
-
- if [info exists et_fortran_large_real_saved] {
- verbose "check_effective_target_fortran_large_real returning saved $et_fortran_large_real_saved" 2
- } else {
- set et_fortran_large_real_saved 0
-
- # Set up, compile, and execute a test program using large real
- # kinds. Include the current process ID in the file names to
- # prevent conflicts with invocations for multiple testsuites.
- set src real[pid].f90
- set exe real[pid].x
-
- set f [open $src "w"]
- puts $f "integer,parameter :: k = &"
- puts $f " selected_real_kind (precision (0.0_8) + 1)"
- puts $f "real(kind=k) :: x"
- puts $f "x = cos (x);"
- puts $f "end"
- close $f
-
- verbose "check_effective_target_fortran_large_real compiling testfile $src" 2
- set lines [${tool}_target_compile $src $exe executable ""]
- file delete $src
-
- if [string match "" $lines] then {
- # No error message, compilation succeeded.
- set et_fortran_large_real_saved 1
- }
- }
-
- return $et_fortran_large_real_saved
+ return [check_no_compiler_messages fortran_large_real executable {
+ ! Fortran
+ integer,parameter :: k = selected_real_kind (precision (0.0_8) + 1)
+ real(kind=k) :: x
+ x = cos (x)
+ end
+ }]
}
# Return 1 if the target supports Fortran integer kinds larger than
# When the target name changes, replace the cached result.
proc check_effective_target_fortran_large_int { } {
- global et_fortran_large_int_saved
- global et_fortran_large_int_target_name
- global tool
-
- if { ![info exists et_fortran_large_int_target_name] } {
- set et_fortran_large_int_target_name ""
- }
-
- # If the target has changed since we set the cached value, clear it.
- set current_target [current_target_name]
- if { $current_target != $et_fortran_large_int_target_name } {
- verbose "check_effective_target_fortran_large_int: `$et_fortran_large_int_target_name' `$current_target'" 2
- set et_fortran_large_int_target_name $current_target
- if [info exists et_fortran_large_int_saved] {
- verbose "check_effective_target_fortran_large_int: removing cached result" 2
- unset et_fortran_large_int_saved
- }
- }
-
- if [info exists et_fortran_large_int_saved] {
- verbose "check_effective_target_fortran_large_int returning saved $et_fortran_large_int_saved" 2
- } else {
- set et_fortran_large_int_saved 0
-
- # Set up, compile, and execute a test program using large integer
- # kinds. Include the current process ID in the file names to
- # prevent conflicts with invocations for multiple testsuites.
- set src int[pid].f90
- set exe int[pid].x
-
- set f [open $src "w"]
- puts $f "integer,parameter :: k = &"
- puts $f " selected_int_kind (range (0_8) + 1)"
- puts $f "integer(kind=k) :: i"
- puts $f "end"
- close $f
-
- verbose "check_effective_target_fortran_large_int compiling testfile $src" 2
- set lines [${tool}_target_compile $src $exe executable ""]
- file delete $src
-
- if [string match "" $lines] then {
- # No error message, compilation succeeded.
- set et_fortran_large_int_saved 1
- }
- }
-
- return $et_fortran_large_int_saved
+ return [check_no_compiler_messages fortran_large_int executable {
+ ! Fortran
+ integer,parameter :: k = selected_int_kind (range (0_8) + 1)
+ integer(kind=k) :: i
+ end
+ }]
}
# Return 1 if we can statically link libgfortran, 0 otherwise.
# When the target name changes, replace the cached result.
proc check_effective_target_static_libgfortran { } {
- global et_static_libgfortran
- global et_static_libgfortran_target_name
- global tool
-
- if { ![info exists et_static_libgfortran_target_name] } {
- set et_static_libgfortran_target_name ""
- }
-
- # If the target has changed since we set the cached value, clear it.
- set current_target [current_target_name]
- if { $current_target != $et_static_libgfortran_target_name } {
- verbose "check_effective_target_static_libgfortran: `$et_static_libgfortran_target_name' `$current_target'" 2
- set et_static_libgfortran_target_name $current_target
- if [info exists et_static_libgfortran_saved] {
- verbose "check_effective_target_static_libgfortran: removing cached result" 2
- unset et_static_libgfortran_saved
- }
- }
-
- if [info exists et_static_libgfortran_saved] {
- verbose "check_effective_target_static_libgfortran returning saved $et_static_libgfortran_saved" 2
- } else {
- set et_static_libgfortran_saved 0
-
- # Set up, compile, and execute a test program using static linking.
- # Include the current process ID in the file names to prevent
- # conflicts with invocations for multiple testsuites.
- set opts "additional_flags=-static"
- set src static[pid].f
- set exe static[pid].x
+ return [check_no_compiler_messages static_libgfortran executable {
+ ! Fortran
+ print *, 'test'
+ end
+ } "-static"]
+}
- set f [open $src "w"]
- puts $f " print *, 'test'"
- puts $f " end"
- close $f
+# Return 1 if the target supports executing 750CL paired-single instructions, 0
+# otherwise. Cache the result.
- verbose "check_effective_target_static_libgfortran compiling testfile $src" 2
- set lines [${tool}_target_compile $src $exe executable "$opts"]
- file delete $src
+proc check_750cl_hw_available { } {
+ return [check_cached_effective_target 750cl_hw_available {
+ # If this is not the right target then we can skip the test.
+ if { ![istarget powerpc-*paired*] } {
+ expr 0
+ } else {
+ check_runtime_nocache 750cl_hw_available {
+ int main()
+ {
+ #ifdef __MACH__
+ asm volatile ("ps_mul v0,v0,v0");
+ #else
+ asm volatile ("ps_mul 0,0,0");
+ #endif
+ return 0;
+ }
+ } "-mpaired"
+ }
+ }]
+}
- if [string match "" $lines] then {
- # No error message, compilation succeeded.
- set et_static_libgfortran_saved 1
- }
- }
+# Return 1 if the target supports executing SSE2 instructions, 0
+# otherwise. Cache the result.
- return $et_static_libgfortran_saved
+proc check_sse2_hw_available { } {
+ return [check_cached_effective_target sse2_hw_available {
+ # If this is not the right target then we can skip the test.
+ if { !([istarget x86_64-*-*] || [istarget i?86-*-*]) } {
+ expr 0
+ } else {
+ check_runtime_nocache sse2_hw_available {
+ #include "cpuid.h"
+ int main ()
+ {
+ unsigned int eax, ebx, ecx, edx = 0;
+ if (__get_cpuid (1, &eax, &ebx, &ecx, &edx))
+ return !(edx & bit_SSE2);
+ return 1;
+ }
+ } ""
+ }
+ }]
}
# Return 1 if the target supports executing AltiVec instructions, 0
# otherwise. Cache the result.
proc check_vmx_hw_available { } {
- global vmx_hw_available_saved
- global tool
-
- if [info exists vmx_hw_available_saved] {
- verbose "check_hw_available returning saved $vmx_hw_available_saved" 2
- } else {
- set vmx_hw_available_saved 0
-
+ return [check_cached_effective_target vmx_hw_available {
# Some simulators are known to not support VMX instructions.
if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } {
- verbose "check_hw_available returning 0" 2
- return $vmx_hw_available_saved
- }
-
- # Set up, compile, and execute a test program containing VMX
- # instructions. Include the current process ID in the file
- # names to prevent conflicts with invocations for multiple
- # testsuites.
- set src vmx[pid].c
- set exe vmx[pid].x
-
- set f [open $src "w"]
- puts $f "int main() {"
- puts $f "#ifdef __MACH__"
- puts $f " asm volatile (\"vor v0,v0,v0\");"
- puts $f "#else"
- puts $f " asm volatile (\"vor 0,0,0\");"
- puts $f "#endif"
- puts $f " return 0; }"
- close $f
-
- # Most targets don't require special flags for this test case, but
- # Darwin does.
- if [istarget *-*-darwin*] {
- set opts "additional_flags=-maltivec"
+ expr 0
} else {
- set opts ""
- }
-
- verbose "check_vmx_hw_available compiling testfile $src" 2
- set lines [${tool}_target_compile $src $exe executable "$opts"]
- file delete $src
-
- if [string match "" $lines] then {
- # No error message, compilation succeeded.
- set result [${tool}_load "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
- verbose "check_vmx_hw_available testfile status is <$status>" 2
-
- if { $status == "pass" } then {
- set vmx_hw_available_saved 1
+ # Most targets don't require special flags for this test case, but
+ # Darwin does.
+ if { [istarget *-*-darwin*]
+ || [istarget *-*-aix*] } {
+ set options "-maltivec"
+ } else {
+ set options ""
}
- } else {
- verbose "check_vmx_hw_availalble testfile compilation failed" 2
+ check_runtime_nocache vmx_hw_available {
+ int main()
+ {
+ #ifdef __MACH__
+ asm volatile ("vor v0,v0,v0");
+ #else
+ asm volatile ("vor 0,0,0");
+ #endif
+ return 0;
+ }
+ } $options
}
- }
-
- return $vmx_hw_available_saved
+ }]
}
# GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
# When the target name changes, replace the cached result.
proc check_effective_target_broken_cplxf_arg { } {
- global et_broken_cplxf_arg_saved
- global et_broken_cplxf_arg_target_name
- global tool
-
- # Skip the work for targets known not to be affected.
- if { ![istarget powerpc64-*-linux*] } {
- return 0
- } elseif { [is-effective-target ilp32] } {
- return 0
- }
-
- if { ![info exists et_broken_cplxf_arg_target_name] } {
- set et_broken_cplxf_arg_target_name ""
- }
-
- # If the target has changed since we set the cached value, clear it.
- set current_target [current_target_name]
- if { $current_target != $et_broken_cplxf_arg_target_name } {
- verbose "check_effective_target_broken_cplxf_arg: `$et_broken_cplxf_arg_target_name'" 2
- set et_broken_cplxf_arg_target_name $current_target
- if [info exists et_broken_cplxf_arg_saved] {
- verbose "check_effective_target_broken_cplxf_arg: removing cached result" 2
- unset et_broken_cplxf_arg_saved
- }
- }
-
- if [info exists et_broken_cplxf_arg_saved] {
- verbose "check_effective_target_broken_cplxf_arg: using cached result" 2
- } else {
- set et_broken_cplxf_arg_saved 0
- # This is only known to affect one target.
- if { ![istarget powerpc64-*-linux*] || ![is-effective-target lp64] } {
- set et_broken_cplxf_arg_saved 0
- verbose "check_effective_target_broken_cplxf_arg: caching 0" 2
- return $et_broken_cplxf_arg_saved
- }
-
- # Set up, compile, and execute a C test program that calls cabsf.
- set src cabsf[pid].c
- set exe cabsf[pid].x
-
- set f [open $src "w"]
- puts $f "#include <complex.h>"
- puts $f "extern void abort (void);"
- puts $f "float fabsf (float);"
- puts $f "float cabsf (_Complex float);"
- puts $f "int main ()"
- puts $f "{"
- puts $f " _Complex float cf;"
- puts $f " float f;"
- puts $f " cf = 3 + 4.0fi;"
- puts $f " f = cabsf (cf);"
- puts $f " if (fabsf (f - 5.0) > 0.0001) abort ();"
- puts $f " return 0;"
- puts $f "}"
- close $f
-
- set lines [${tool}_target_compile $src $exe executable "-lm"]
- file delete $src
-
- if [string match "" $lines] {
- # No error message, compilation succeeded.
- set result [${tool}_load "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
-
- verbose "check_effective_target_broken_cplxf_arg: status is <$status>" 2
-
- if { $status != "pass" } {
- set et_broken_cplxf_arg_saved 1
- }
+ return [check_cached_effective_target broken_cplxf_arg {
+ # Skip the work for targets known not to be affected.
+ if { ![istarget powerpc64-*-linux*] } {
+ expr 0
+ } elseif { ![is-effective-target lp64] } {
+ expr 0
} else {
- verbose "check_effective_target_broken_cplxf_arg: compilation failed" 2
+ check_runtime_nocache broken_cplxf_arg {
+ #include <complex.h>
+ extern void abort (void);
+ float fabsf (float);
+ float cabsf (_Complex float);
+ int main ()
+ {
+ _Complex float cf;
+ float f;
+ cf = 3 + 4.0fi;
+ f = cabsf (cf);
+ if (fabsf (f - 5.0) > 0.0001)
+ abort ();
+ return 0;
+ }
+ } "-lm"
}
- }
- return $et_broken_cplxf_arg_saved
+ }]
}
proc check_alpha_max_hw_available { } {
- global alpha_max_hw_available_saved
- global tool
-
- if [info exists alpha_max_hw_available_saved] {
- verbose "check_alpha_max_hw_available returning saved $alpha_max_hw_available_saved" 2
- } else {
- set alpha_max_hw_available_saved 0
-
- # Set up, compile, and execute a test program probing bit 8 of the
- # architecture mask, which indicates presence of MAX instructions.
- set src max[pid].c
- set exe max[pid].x
-
- set f [open $src "w"]
- puts $f "int main() { return __builtin_alpha_amask(1<<8) != 0; }"
- close $f
-
- verbose "check_alpha_max_hw_available compiling testfile $src" 2
- set lines [${tool}_target_compile $src $exe executable ""]
- file delete $src
-
- if [string match "" $lines] then {
- # No error message, compilation succeeded.
- set result [${tool}_load "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
- verbose "check_alpha_max_hw_available testfile status is <$status>" 2
-
- if { $status == "pass" } then {
- set alpha_max_hw_available_saved 1
- }
- } else {
- verbose "check_alpha_max_hw_availalble testfile compilation failed" 2
- }
- }
-
- return $alpha_max_hw_available_saved
+ return [check_runtime alpha_max_hw_available {
+ int main() { return __builtin_alpha_amask(1<<8) != 0; }
+ }]
}
# Returns true iff the FUNCTION is available on the target system.
# AC_CHECK_FUNC.)
proc check_function_available { function } {
- set var "${function}_available_saved"
- global $var
- global tool
-
- if {![info exists $var]} {
- # Assume it exists.
- set $var 1
- # Check to make sure.
- set src "function[pid].c"
- set exe "function[pid].exe"
-
- set f [open $src "w"]
- puts $f "int main () { $function (); }"
- close $f
-
- set lines [${tool}_target_compile $src $exe executable ""]
- file delete $src
- file delete $exe
-
- if {![string match "" $lines]} then {
- set $var 0
- verbose -log "$function is not available"
- } else {
- verbose -log "$function is available"
- }
- }
-
- eval return \$$var
+ return [check_no_compiler_messages ${function}_available \
+ executable [subst {
+ #ifdef __cplusplus
+ extern "C"
+ #endif
+ char $function ();
+ int main () { $function (); }
+ }]]
}
# Returns true iff "fork" is available on the target system.
# Returns true iff "__cxa_atexit" is used on the target system.
proc check_cxa_atexit_available { } {
- global et_cxa_atexit
- global et_cxa_atexit_target_name
- global tool
-
- if { ![info exists et_cxa_atexit_target_name] } {
- set et_cxa_atexit_target_name ""
- }
-
- # If the target has changed since we set the cached value, clear it.
- set current_target [current_target_name]
- if { $current_target != $et_cxa_atexit_target_name } {
- verbose "check_cxa_atexit_available: `$et_cxa_atexit_target_name'" 2
- set et_cxa_atexit_target_name $current_target
- if [info exists et_cxa_atexit] {
- verbose "check_cxa_atexit_available: removing cached result" 2
- unset et_cxa_atexit
- }
- }
-
- if [info exists et_cxa_atexit] {
- verbose "check_cxa_atexit_available: using cached result" 2
- } else {
- set et_cxa_atexit 0
-
- # Set up, compile, and execute a C++ test program that depends
- # on correct ordering of static object destructors. This is
- # indicative of the presence and use of __cxa_atexit.
- set src cxaatexit[pid].cc
- set exe cxaatexit[pid].x
-
- set f [open $src "w"]
- puts $f "#include <stdlib.h>"
- puts $f "static unsigned int count;"
- puts $f "struct X"
- puts $f "{"
- puts $f " X() { count = 1; }"
- puts $f " ~X()"
- puts $f " {"
- puts $f " if (count != 3)"
- puts $f " exit(1);"
- puts $f " count = 4;"
- puts $f " }"
- puts $f "};"
- puts $f "void f()"
- puts $f "{"
- puts $f " static X x;"
- puts $f "}"
- puts $f "struct Y"
- puts $f "{"
- puts $f " Y() { f(); count = 2; }"
- puts $f " ~Y()"
- puts $f " {"
- puts $f " if (count != 2)"
- puts $f " exit(1);"
- puts $f " count = 3;"
- puts $f " }"
- puts $f "};"
- puts $f "Y y;"
- puts $f "int main()"
- puts $f "{ return 0; }"
- close $f
-
- set lines [${tool}_target_compile $src $exe executable ""]
- file delete $src
-
- if [string match "" $lines] {
- # No error message, compilation succeeded.
- set result [${tool}_load "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
-
- verbose "check_cxa_atexit_available: status is <$status>" 2
-
- if { $status == "pass" } {
- set et_cxa_atexit 1
- }
+ return [check_cached_effective_target cxa_atexit_available {
+ if { [istarget "hppa*-*-hpux10*"] } {
+ # HP-UX 10 doesn't have __cxa_atexit but subsequent test passes.
+ expr 0
} else {
- verbose "check_cxa_atexit_available: compilation failed" 2
+ check_runtime_nocache cxa_atexit_available {
+ // C++
+ #include <stdlib.h>
+ static unsigned int count;
+ struct X
+ {
+ X() { count = 1; }
+ ~X()
+ {
+ if (count != 3)
+ exit(1);
+ count = 4;
+ }
+ };
+ void f()
+ {
+ static X x;
+ }
+ struct Y
+ {
+ Y() { f(); count = 2; }
+ ~Y()
+ {
+ if (count != 2)
+ exit(1);
+ count = 3;
+ }
+ };
+ Y y;
+ int main() { return 0; }
+ }
}
- }
- return $et_cxa_atexit
+ }]
}
}]
}
+# Return 1 if the target supports long double larger than double,
+# 0 otherwise.
+
+proc check_effective_target_large_long_double { } {
+ return [check_no_compiler_messages large_long_double object {
+ int dummy[sizeof(long double) > sizeof(double) ? 1 : -1];
+ }]
+}
+
+# Return 1 if the target supports compiling fixed-point,
+# 0 otherwise.
+
+proc check_effective_target_fixed_point { } {
+ return [check_no_compiler_messages fixed_point object {
+ _Sat _Fract x; _Sat _Accum y;
+ }]
+}
+
# Return 1 if the target supports compiling decimal floating point,
# 0 otherwise.
proc check_effective_target_dfp_nocache { } {
verbose "check_effective_target_dfp_nocache: compiling source" 2
- set ret [string match "" [get_compiler_messages dfp 0 object {
+ set ret [check_no_compiler_messages_nocache dfp object {
_Decimal32 x; _Decimal64 y; _Decimal128 z;
- }]]
+ }]
verbose "check_effective_target_dfp_nocache: returning $ret" 2
return $ret
}
proc check_effective_target_dfprt_nocache { } {
- global tool
-
- set ret 0
-
- verbose "check_effective_target_dfprt_nocache: compiling source" 2
- # Set up, compile, and execute a test program containing decimal
- # float operations.
- set src dfprt[pid].c
- set exe dfprt[pid].x
-
- set f [open $src "w"]
- puts $f "_Decimal32 x = 1.2df; _Decimal64 y = 2.3dd; _Decimal128 z;"
- puts $f "int main () { z = x + y; return 0; }"
- close $f
-
- verbose "check_effective_target_dfprt_nocache: compiling testfile $src" 2
- set lines [${tool}_target_compile $src $exe executable ""]
- file delete $src
-
- if [string match "" $lines] then {
- # No error message, compilation succeeded.
- set result [${tool}_load "./$exe" "" ""]
- set status [lindex $result 0]
- remote_file build delete $exe
- verbose "check_effective_target_dfprt_nocache: testfile status is <$status>" 2
- if { $status == "pass" } then {
- set ret 1
- }
- }
- return $ret
- verbose "check_effective_target_dfprt_nocache: returning $ret" 2
+ return [check_runtime_nocache dfprt {
+ _Decimal32 x = 1.2df; _Decimal64 y = 2.3dd; _Decimal128 z;
+ int main () { z = x + y; return 0; }
+ }]
}
# Return 1 if the target supports compiling Decimal Floating Point,
# This won't change for different subtargets so cache the result.
proc check_effective_target_dfp { } {
- global et_dfp_saved
-
- if [info exists et_dfp_saved] {
- verbose "check_effective_target_dfp: using cached result" 2
- } else {
- set et_dfp_saved [check_effective_target_dfp_nocache]
- }
- verbose "check_effective_target_dfp: returning $et_dfp_saved" 2
- return $et_dfp_saved
+ return [check_cached_effective_target dfp {
+ check_effective_target_dfp_nocache
+ }]
}
# Return 1 if the target supports linking and executing Decimal Floating
# This won't change for different subtargets so cache the result.
proc check_effective_target_dfprt { } {
- global et_dfprt_saved
- global tool
-
- if [info exists et_dfprt_saved] {
- verbose "check_effective_target_dfprt: using cached result" 2
- } else {
- set et_dfprt_saved [check_effective_target_dfprt_nocache]
- }
- verbose "check_effective_target_dfprt: returning $et_dfprt_saved" 2
- return $et_dfprt_saved
+ return [check_cached_effective_target dfprt {
+ check_effective_target_dfprt_nocache
+ }]
}
# Return 1 if the target needs a command line argument to enable a SIMD
# instruction set.
-#
-# This won't change for different subtargets so cache the result.
proc check_effective_target_vect_cmdline_needed { } {
global et_vect_cmdline_needed_saved
+ global et_vect_cmdline_needed_target_name
+
+ if { ![info exists et_vect_cmdline_needed_target_name] } {
+ set et_vect_cmdline_needed_target_name ""
+ }
+
+ # If the target has changed since we set the cached value, clear it.
+ set current_target [current_target_name]
+ if { $current_target != $et_vect_cmdline_needed_target_name } {
+ verbose "check_effective_target_vect_cmdline_needed: `$et_vect_cmdline_needed_target_name' `$current_target'" 2
+ set et_vect_cmdline_needed_target_name $current_target
+ if { [info exists et_vect_cmdline_needed_saved] } {
+ verbose "check_effective_target_vect_cmdline_needed: removing cached result" 2
+ unset et_vect_cmdline_needed_saved
+ }
+ }
if [info exists et_vect_cmdline_needed_saved] {
verbose "check_effective_target_vect_cmdline_needed: using cached result" 2
} else {
set et_vect_cmdline_needed_saved 1
if { [istarget ia64-*-*]
- || [istarget x86_64-*-*] } {
+ || (([istarget x86_64-*-*] || [istarget i?86-*-*])
+ && [check_effective_target_lp64])
+ || ([istarget powerpc*-*-*]
+ && ([check_effective_target_powerpc_spe]
+ || [check_effective_target_powerpc_altivec]))} {
set et_vect_cmdline_needed_saved 0
}
}
} else {
set et_vect_int_saved 0
if { [istarget i?86-*-*]
- || [istarget powerpc*-*-*]
+ || ([istarget powerpc*-*-*]
+ && ![istarget powerpc-*-linux*paired*])
+ || [istarget spu-*-*]
|| [istarget x86_64-*-*]
|| [istarget sparc*-*-*]
|| [istarget alpha*-*-*]
return $et_vect_int_saved
}
-# Return 1 is this is an arm target using 32-bit instructions
-proc check_effective_target_arm32 { } {
- global et_arm32_saved
- global et_arm32_target_name
- global compiler_flags
+# Return 1 if the target supports int->float conversion
+#
+
+proc check_effective_target_vect_intfloat_cvt { } {
+ global et_vect_intfloat_cvt_saved
+
+ if [info exists et_vect_intfloat_cvt_saved] {
+ verbose "check_effective_target_vect_intfloat_cvt: using cached result" 2
+ } else {
+ set et_vect_intfloat_cvt_saved 0
+ if { [istarget i?86-*-*]
+ || ([istarget powerpc*-*-*]
+ && ![istarget powerpc-*-linux*paired*])
+ || [istarget x86_64-*-*] } {
+ set et_vect_intfloat_cvt_saved 1
+ }
+ }
+
+ verbose "check_effective_target_vect_intfloat_cvt: returning $et_vect_intfloat_cvt_saved" 2
+ return $et_vect_intfloat_cvt_saved
+}
+
+
+# Return 1 if the target supports float->int conversion
+#
+
+proc check_effective_target_vect_floatint_cvt { } {
+ global et_vect_floatint_cvt_saved
+
+ if [info exists et_vect_floatint_cvt_saved] {
+ verbose "check_effective_target_vect_floatint_cvt: using cached result" 2
+ } else {
+ set et_vect_floatint_cvt_saved 0
+ if { [istarget i?86-*-*]
+ || [istarget x86_64-*-*] } {
+ set et_vect_floatint_cvt_saved 1
+ }
+ }
+
+ verbose "check_effective_target_vect_floatint_cvt: returning $et_vect_floatint_cvt_saved" 2
+ return $et_vect_floatint_cvt_saved
+}
+
+# Return 1 is this is an arm target using 32-bit instructions
+proc check_effective_target_arm32 { } {
+ return [check_no_compiler_messages arm32 assembly {
+ #if !defined(__arm__) || (defined(__thumb__) && !defined(__thumb2__))
+ #error FOO
+ #endif
+ }]
+}
+
+# Return 1 if this is an ARM target supporting -mfpu=vfp
+# -mfloat-abi=softfp. Some multilibs may be incompatible with these
+# options.
+
+proc check_effective_target_arm_vfp_ok { } {
+ if { [check_effective_target_arm32] } {
+ return [check_no_compiler_messages arm_vfp_ok object {
+ int dummy;
+ } "-mfpu=vfp -mfloat-abi=softfp"]
+ } else {
+ return 0
+ }
+}
+
+# Return 1 if this is an ARM target supporting -mfpu=neon
+# -mfloat-abi=softfp. Some multilibs may be incompatible with these
+# options.
- if { ![info exists et_arm32_target_name] } {
- set et_arm32_target_name ""
+proc check_effective_target_arm_neon_ok { } {
+ if { [check_effective_target_arm32] } {
+ return [check_no_compiler_messages arm_neon_ok object {
+ int dummy;
+ } "-mfpu=neon -mfloat-abi=softfp"]
+ } else {
+ return 0
}
+}
- # If the target has changed since we set the cached value, clear it.
- set current_target [current_target_name]
- if { $current_target != $et_arm32_target_name } {
- verbose "check_effective_target_arm32: `$et_arm32_target_name' `$current_target'" 2
- set et_arm32_target_name $current_target
- if { [info exists et_arm32_saved] } {
- verbose "check_effective_target_arm32: removing cached result" 2
- unset et_arm32_saved
- }
- }
+# Return 1 if the target supports executing NEON instructions, 0
+# otherwise. Cache the result.
- if [info exists et_arm32_saved] {
- verbose "check-effective_target_arm32: using cached result" 2
- } else {
- set et_arm32_saved 0
- if { [istarget arm-*-*]
- || [istarget strongarm*-*-*]
- || [istarget xscale-*-*] } {
- if ![string match "*-mthumb *" $compiler_flags] {
- set et_arm32_saved 1
- }
+proc check_effective_target_arm_neon_hw { } {
+ return [check_runtime arm_neon_hw_available {
+ int
+ main (void)
+ {
+ long long a = 0, b = 1;
+ asm ("vorr %P0, %P1, %P2"
+ : "=w" (a)
+ : "0" (a), "w" (b));
+ return (a != 1);
}
- }
- verbose "check_effective_target_arm32: returning $et_arm32_saved" 2
- return $et_arm32_saved
+ } "-mfpu=neon -mfloat-abi=softfp"]
}
# Return 1 if this is a PowerPC target with floating-point registers.
# Return 1 if this is a PowerPC target supporting -maltivec.
proc check_effective_target_powerpc_altivec_ok { } {
- if { [istarget powerpc*-*-*]
+ if { ([istarget powerpc*-*-*]
+ && ![istarget powerpc-*-linux*paired*])
|| [istarget rs6000-*-*] } {
- # AltiVec is not supported on Aix.
- if { [istarget powerpc*-*-aix*] } {
+ # AltiVec is not supported on AIX before 5.3.
+ if { [istarget powerpc*-*-aix4*]
+ || [istarget powerpc*-*-aix5.1*]
+ || [istarget powerpc*-*-aix5.2*] } {
return 0
}
return [check_no_compiler_messages powerpc_altivec_ok object {
}
}
+# Return 1 if this is a PowerPC target that supports SPU.
+
+proc check_effective_target_powerpc_spu { } {
+ return [istarget powerpc*-*-linux*]
+}
+
+# Return 1 if this is a PowerPC target with SPE enabled.
+
+proc check_effective_target_powerpc_spe { } {
+ if { [istarget powerpc*-*-*] } {
+ return [check_no_compiler_messages powerpc_spe object {
+ #ifndef __SPE__
+ #error not SPE
+ #else
+ int dummy;
+ #endif
+ }]
+ } else {
+ return 0
+ }
+}
+
+# Return 1 if this is a PowerPC target with Altivec enabled.
+
+proc check_effective_target_powerpc_altivec { } {
+ if { [istarget powerpc*-*-*] } {
+ return [check_no_compiler_messages powerpc_altivec object {
+ #ifndef __ALTIVEC__
+ #error not Altivec
+ #else
+ int dummy;
+ #endif
+ }]
+ } else {
+ return 0
+ }
+}
+
+# The VxWorks SPARC simulator accepts only EM_SPARC executables and
+# chokes on EM_SPARC32PLUS or EM_SPARCV9 executables. Return 1 if the
+# test environment appears to run executables on such a simulator.
+
+proc check_effective_target_ultrasparc_hw { } {
+ return [check_runtime ultrasparc_hw {
+ int main() { return 0; }
+ } "-mcpu=ultrasparc"]
+}
+
# Return 1 if the target supports hardware vector shift operation.
proc check_effective_target_vect_shift { } {
verbose "check_effective_target_vect_shift: using cached result" 2
} else {
set et_vect_shift_saved 0
- if { [istarget powerpc*-*-*]
+ if { ([istarget powerpc*-*-*]
+ && ![istarget powerpc-*-linux*paired*])
|| [istarget ia64-*-*]
|| [istarget i?86-*-*]
|| [istarget x86_64-*-*] } {
proc check_effective_target_vect_long { } {
if { [istarget i?86-*-*]
- || ([istarget powerpc*-*-*] && [check_effective_target_ilp32])
+ || (([istarget powerpc*-*-*]
+ && ![istarget powerpc-*-linux*paired*])
+ && [check_effective_target_ilp32])
|| [istarget x86_64-*-*]
|| ([istarget sparc*-*-*] && [check_effective_target_ilp32]) } {
set answer 1
set et_vect_float_saved 0
if { [istarget i?86-*-*]
|| [istarget powerpc*-*-*]
+ || [istarget spu-*-*]
|| [istarget mipsisa64*-*-*]
|| [istarget x86_64-*-*]
|| [istarget ia64-*-*] } {
} else {
set et_vect_double_saved 0
if { [istarget i?86-*-*]
- || [istarget x86_64-*-*] } {
+ || [istarget x86_64-*-*]
+ || [istarget spu-*-*] } {
set et_vect_double_saved 1
}
}
} else {
set et_vect_no_int_max_saved 0
if { [istarget sparc*-*-*]
+ || [istarget spu-*-*]
|| [istarget alpha*-*-*] } {
set et_vect_no_int_max_saved 1
}
# Return 1 if the target plus current options supports a vector
# widening summation of *short* args into *int* result, 0 otherwise.
+# A target can also support this widening summation if it can support
+# promotion (unpacking) from shorts to ints.
#
# This won't change for different subtargets so cache the result.
proc check_effective_target_vect_widen_sum_hi_to_si { } {
global et_vect_widen_sum_hi_to_si
-
+
if [info exists et_vect_widen_sum_hi_to_si_saved] {
verbose "check_effective_target_vect_widen_sum_hi_to_si: using cached result" 2
} else {
- set et_vect_widen_sum_hi_to_si_saved 0
- if { [istarget powerpc*-*-*]
+ set et_vect_widen_sum_hi_to_si_saved [check_effective_target_vect_unpack]
+ if { [istarget powerpc*-*-*]
|| [istarget ia64-*-*] } {
set et_vect_widen_sum_hi_to_si_saved 1
}
# Return 1 if the target plus current options supports a vector
# widening summation of *char* args into *short* result, 0 otherwise.
+# A target can also support this widening summation if it can support
+# promotion (unpacking) from chars to shorts.
#
# This won't change for different subtargets so cache the result.
proc check_effective_target_vect_widen_sum_qi_to_hi { } {
global et_vect_widen_sum_qi_to_hi
-
+
if [info exists et_vect_widen_sum_qi_to_hi_saved] {
verbose "check_effective_target_vect_widen_sum_qi_to_hi: using cached result" 2
} else {
set et_vect_widen_sum_qi_to_hi_saved 0
- if { [istarget ia64-*-*] } {
+ if { [check_effective_target_vect_unpack]
+ || [istarget ia64-*-*] } {
set et_vect_widen_sum_qi_to_hi_saved 1
- }
+ }
}
verbose "check_effective_target_vect_widen_sum_qi_to_hi: returning $et_vect_widen_sum_qi_to_hi_saved" 2
return $et_vect_widen_sum_qi_to_hi_saved
proc check_effective_target_vect_widen_sum_qi_to_si { } {
global et_vect_widen_sum_qi_to_si
-
+
if [info exists et_vect_widen_sum_qi_to_si_saved] {
verbose "check_effective_target_vect_widen_sum_qi_to_si: using cached result" 2
} else {
}
# Return 1 if the target plus current options supports a vector
-# widening summation, 0 otherwise.
+# widening multiplication of *char* args into *short* result, 0 otherwise.
+# A target can also support this widening multplication if it can support
+# promotion (unpacking) from chars to shorts, and vect_short_mult (non-widening
+# multiplication of shorts).
#
# This won't change for different subtargets so cache the result.
-
-proc check_effective_target_vect_widen_sum { } {
- global et_vect_widen_sum
-
- if [info exists et_vect_widen_sum_saved] {
- verbose "check_effective_target_vect_widen_sum: using cached result" 2
+
+
+proc check_effective_target_vect_widen_mult_qi_to_hi { } {
+ global et_vect_widen_mult_qi_to_hi
+
+ if [info exists et_vect_widen_mult_qi_to_hi_saved] {
+ verbose "check_effective_target_vect_widen_mult_qi_to_hi: using cached result" 2
+ } else {
+ if { [check_effective_target_vect_unpack]
+ && [check_effective_target_vect_short_mult] } {
+ set et_vect_widen_mult_qi_to_hi_saved 1
+ } else {
+ set et_vect_widen_mult_qi_to_hi_saved 0
+ }
+ if { [istarget powerpc*-*-*] } {
+ set et_vect_widen_mult_qi_to_hi_saved 1
+ }
+ }
+ verbose "check_effective_target_vect_widen_mult_qi_to_hi: returning $et_vect_widen_mult_qi_to_hi_saved" 2
+ return $et_vect_widen_mult_qi_to_hi_saved
+}
+
+# Return 1 if the target plus current options supports a vector
+# widening multiplication of *short* args into *int* result, 0 otherwise.
+# A target can also support this widening multplication if it can support
+# promotion (unpacking) from shorts to ints, and vect_int_mult (non-widening
+# multiplication of ints).
+#
+# This won't change for different subtargets so cache the result.
+
+
+proc check_effective_target_vect_widen_mult_hi_to_si { } {
+ global et_vect_widen_mult_hi_to_si
+
+ if [info exists et_vect_widen_mult_hi_to_si_saved] {
+ verbose "check_effective_target_vect_widen_mult_hi_to_si: using cached result" 2
} else {
- set et_vect_widen_sum_saved 0
+ if { [check_effective_target_vect_unpack]
+ && [check_effective_target_vect_int_mult] } {
+ set et_vect_widen_mult_hi_to_si_saved 1
+ } else {
+ set et_vect_widen_mult_hi_to_si_saved 0
+ }
if { [istarget powerpc*-*-*]
- || [istarget ia64-*-*] } {
- set et_vect_widen_sum_saved 1
+ || [istarget spu-*-*]
+ || [istarget i?86-*-*]
+ || [istarget x86_64-*-*] } {
+ set et_vect_widen_mult_hi_to_si_saved 1
}
}
- verbose "check_effective_target_vect_widen_sum: returning $et_vect_widen_sum_saved" 2
- return $et_vect_widen_sum_saved
+ verbose "check_effective_target_vect_widen_mult_hi_to_si: returning $et_vect_widen_mult_hi_to_si_saved" 2
+ return $et_vect_widen_mult_hi_to_si_saved
}
# Return 1 if the target plus current options supports a vector
verbose "check_effective_target_vect_sdot_qi: using cached result" 2
} else {
set et_vect_sdot_qi_saved 0
- if { [istarget ia64-*-*] } {
- set et_vect_sdot_qi_saved 1
- }
}
verbose "check_effective_target_vect_sdot_qi: returning $et_vect_sdot_qi_saved" 2
return $et_vect_sdot_qi_saved
verbose "check_effective_target_vect_udot_qi: using cached result" 2
} else {
set et_vect_udot_qi_saved 0
- if { [istarget powerpc*-*-*]
- || [istarget ia64-*-*] } {
+ if { [istarget powerpc*-*-*] } {
set et_vect_udot_qi_saved 1
}
}
verbose "check_effective_target_vect_sdot_hi: using cached result" 2
} else {
set et_vect_sdot_hi_saved 0
- if { [istarget powerpc*-*-*]
+ if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
|| [istarget i?86-*-*]
- || [istarget x86_64-*-*]
- || [istarget ia64-*-*] } {
+ || [istarget x86_64-*-*] } {
set et_vect_sdot_hi_saved 1
}
}
verbose "check_effective_target_vect_udot_hi: using cached result" 2
} else {
set et_vect_udot_hi_saved 0
- if { [istarget powerpc*-*-*] } {
+ if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*]) } {
set et_vect_udot_hi_saved 1
}
}
}
+# Return 1 if the target plus current options supports a vector
+# demotion (packing) of shorts (to chars) and ints (to shorts)
+# using modulo arithmetic, 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_vect_pack_trunc { } {
+ global et_vect_pack_trunc
+
+ if [info exists et_vect_pack_trunc_saved] {
+ verbose "check_effective_target_vect_pack_trunc: using cached result" 2
+ } else {
+ set et_vect_pack_trunc_saved 0
+ if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
+ || [istarget i?86-*-*]
+ || [istarget x86_64-*-*] } {
+ set et_vect_pack_trunc_saved 1
+ }
+ }
+ verbose "check_effective_target_vect_pack_trunc: returning $et_vect_pack_trunc_saved" 2
+ return $et_vect_pack_trunc_saved
+}
+
+# Return 1 if the target plus current options supports a vector
+# promotion (unpacking) of chars (to shorts) and shorts (to ints), 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_vect_unpack { } {
+ global et_vect_unpack
+
+ if [info exists et_vect_unpack_saved] {
+ verbose "check_effective_target_vect_unpack: using cached result" 2
+ } else {
+ set et_vect_unpack_saved 0
+ if { ([istarget powerpc*-*-*] && ![istarget powerpc-*paired*])
+ || [istarget i?86-*-*]
+ || [istarget x86_64-*-*]
+ || [istarget spu-*-*] } {
+ set et_vect_unpack_saved 1
+ }
+ }
+ verbose "check_effective_target_vect_unpack: returning $et_vect_unpack_saved" 2
+ return $et_vect_unpack_saved
+}
+
+# Return 1 if the target plus current options does not guarantee
+# that its STACK_BOUNDARY is >= the reguired vector alignment.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_unaligned_stack { } {
+ global et_unaligned_stack_saved
+
+ if [info exists et_unaligned_stack_saved] {
+ verbose "check_effective_target_unaligned_stack: using cached result" 2
+ } else {
+ set et_unaligned_stack_saved 0
+ if { ( [istarget i?86-*-*] || [istarget x86_64-*-*] )
+ && (! [istarget *-*-darwin*] ) } {
+ set et_unaligned_stack_saved 1
+ }
+ }
+ verbose "check_effective_target_unaligned_stack: returning $et_unaligned_stack_saved" 2
+ return $et_unaligned_stack_saved
+}
+
# Return 1 if the target plus current options does not support a vector
# alignment mechanism, 0 otherwise.
#
set et_vect_no_align_saved 0
if { [istarget mipsisa64*-*-*]
|| [istarget sparc*-*-*]
- || [istarget ia64-*-*] } {
+ || [istarget ia64-*-*] } {
set et_vect_no_align_saved 1
}
}
return $et_vect_no_align_saved
}
+# Return 1 if arrays are aligned to the vector alignment
+# boundary, 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_vect_aligned_arrays { } {
+ global et_vect_aligned_arrays
+
+ if [info exists et_vect_aligned_arrays_saved] {
+ verbose "check_effective_target_vect_aligned_arrays: using cached result" 2
+ } else {
+ set et_vect_aligned_arrays_saved 0
+ if { (([istarget x86_64-*-*]
+ || [istarget i?86-*-*]) && [is-effective-target lp64])
+ || [istarget spu-*-*] } {
+ set et_vect_aligned_arrays_saved 1
+ }
+ }
+ verbose "check_effective_target_vect_aligned_arrays: returning $et_vect_aligned_arrays_saved" 2
+ return $et_vect_aligned_arrays_saved
+}
+
+# Return 1 if types of size 32 bit or less are naturally aligned
+# (aligned to their type-size), 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_natural_alignment_32 { } {
+ global et_natural_alignment_32
+
+ if [info exists et_natural_alignment_32_saved] {
+ verbose "check_effective_target_natural_alignment_32: using cached result" 2
+ } else {
+ # FIXME: 32bit powerpc: guaranteed only if MASK_ALIGN_NATURAL/POWER.
+ set et_natural_alignment_32_saved 1
+ if { ([istarget *-*-darwin*] && [is-effective-target lp64]) } {
+ set et_natural_alignment_32_saved 0
+ }
+ }
+ verbose "check_effective_target_natural_alignment_32: returning $et_natural_alignment_32_saved" 2
+ return $et_natural_alignment_32_saved
+}
+
+# Return 1 if types of size 64 bit or less are naturally aligned (aligned to their
+# type-size), 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_natural_alignment_64 { } {
+ global et_natural_alignment_64
+
+ if [info exists et_natural_alignment_64_saved] {
+ verbose "check_effective_target_natural_alignment_64: using cached result" 2
+ } else {
+ set et_natural_alignment_64_saved 0
+ if { ([is-effective-target lp64] && ![istarget *-*-darwin*])
+ || [istarget spu-*-*] } {
+ set et_natural_alignment_64_saved 1
+ }
+ }
+ verbose "check_effective_target_natural_alignment_64: returning $et_natural_alignment_64_saved" 2
+ return $et_natural_alignment_64_saved
+}
+
+# Return 1 if vector alignment (for types of size 32 bit or less) is reachable, 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_vector_alignment_reachable { } {
+ global et_vector_alignment_reachable
+
+ if [info exists et_vector_alignment_reachable_saved] {
+ verbose "check_effective_target_vector_alignment_reachable: using cached result" 2
+ } else {
+ if { [check_effective_target_vect_aligned_arrays]
+ || [check_effective_target_natural_alignment_32] } {
+ set et_vector_alignment_reachable_saved 1
+ } else {
+ set et_vector_alignment_reachable_saved 0
+ }
+ }
+ verbose "check_effective_target_vector_alignment_reachable: returning $et_vector_alignment_reachable_saved" 2
+ return $et_vector_alignment_reachable_saved
+}
+
+# Return 1 if vector alignment for 64 bit is reachable, 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_vector_alignment_reachable_for_64bit { } {
+ global et_vector_alignment_reachable_for_64bit
+
+ if [info exists et_vector_alignment_reachable_for_64bit_saved] {
+ verbose "check_effective_target_vector_alignment_reachable_for_64bit: using cached result" 2
+ } else {
+ if { [check_effective_target_vect_aligned_arrays]
+ || [check_effective_target_natural_alignment_64] } {
+ set et_vector_alignment_reachable_for_64bit_saved 1
+ } else {
+ set et_vector_alignment_reachable_for_64bit_saved 0
+ }
+ }
+ verbose "check_effective_target_vector_alignment_reachable_for_64bit: returning $et_vector_alignment_reachable_for_64bit_saved" 2
+ return $et_vector_alignment_reachable_for_64bit_saved
+}
+
# Return 1 if the target supports vector conditional operations, 0 otherwise.
proc check_effective_target_vect_condition { } {
if { [istarget powerpc*-*-*]
|| [istarget ia64-*-*]
|| [istarget i?86-*-*]
+ || [istarget spu-*-*]
|| [istarget x86_64-*-*] } {
set et_vect_cond_saved 1
}
} else {
set et_vect_short_mult_saved 0
if { [istarget ia64-*-*]
+ || [istarget spu-*-*]
|| [istarget i?86-*-*]
|| [istarget x86_64-*-*] } {
set et_vect_short_mult_saved 1
verbose "check_effective_target_vect_int_mult: using cached result" 2
} else {
set et_vect_int_mult_saved 0
- if { [istarget powerpc*-*-*]
+ if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
+ || [istarget spu-*-*]
|| [istarget i?86-*-*]
|| [istarget x86_64-*-*] } {
set et_vect_int_mult_saved 1
return $et_vect_int_mult_saved
}
+# Return 1 if the target supports vector even/odd elements extraction, 0 otherwise.
+
+proc check_effective_target_vect_extract_even_odd { } {
+ global et_vect_extract_even_odd_saved
+
+ if [info exists et_vect_extract_even_odd_saved] {
+ verbose "check_effective_target_vect_extract_even_odd: using cached result" 2
+ } else {
+ set et_vect_extract_even_odd_saved 0
+ if { [istarget powerpc*-*-*] } {
+ set et_vect_extract_even_odd_saved 1
+ }
+ }
+
+ verbose "check_effective_target_vect_extract_even_odd: returning $et_vect_extract_even_odd_saved" 2
+ return $et_vect_extract_even_odd_saved
+}
+
+# Return 1 if the target supports vector interleaving, 0 otherwise.
+
+proc check_effective_target_vect_interleave { } {
+ global et_vect_interleave_saved
+
+ if [info exists et_vect_interleave_saved] {
+ verbose "check_effective_target_vect_interleave: using cached result" 2
+ } else {
+ set et_vect_interleave_saved 0
+ if { [istarget powerpc*-*-*]
+ || [istarget i?86-*-*]
+ || [istarget x86_64-*-*] } {
+ set et_vect_interleave_saved 1
+ }
+ }
+
+ verbose "check_effective_target_vect_interleave: returning $et_vect_interleave_saved" 2
+ return $et_vect_interleave_saved
+}
+
+# Return 1 if the target supports vector interleaving and extract even/odd, 0 otherwise.
+proc check_effective_target_vect_strided { } {
+ global et_vect_strided_saved
+
+ if [info exists et_vect_strided_saved] {
+ verbose "check_effective_target_vect_strided: using cached result" 2
+ } else {
+ set et_vect_strided_saved 0
+ if { [check_effective_target_vect_interleave]
+ && [check_effective_target_vect_extract_even_odd] } {
+ set et_vect_strided_saved 1
+ }
+ }
+
+ verbose "check_effective_target_vect_strided: returning $et_vect_strided_saved" 2
+ return $et_vect_strided_saved
+}
+
+# Return 1 if the target supports section-anchors
+
+proc check_effective_target_section_anchors { } {
+ global et_section_anchors_saved
+
+ if [info exists et_section_anchors_saved] {
+ verbose "check_effective_target_section_anchors: using cached result" 2
+ } else {
+ set et_section_anchors_saved 0
+ if { [istarget powerpc*-*-*] } {
+ set et_section_anchors_saved 1
+ }
+ }
+
+ verbose "check_effective_target_section_anchors: returning $et_section_anchors_saved" 2
+ return $et_section_anchors_saved
+}
+
# Return 1 if the target supports atomic operations on "int" and "long".
proc check_effective_target_sync_int_long { } {
return $et_sync_char_short_saved
}
+# Return 1 if the target uses a ColdFire FPU.
+
+proc check_effective_target_coldfire_fpu { } {
+ return [check_no_compiler_messages coldfire_fpu assembly {
+ #ifndef __mcffpu__
+ #error FOO
+ #endif
+ }]
+}
+
+# Return true if this is a uClibc target.
+
+proc check_effective_target_uclibc {} {
+ return [check_no_compiler_messages uclibc object {
+ #include <features.h>
+ #if !defined (__UCLIBC__)
+ #error FOO
+ #endif
+ }]
+}
+
+# Return true if this is a uclibc target and if the uclibc feature
+# described by __$feature__ is not present.
+
+proc check_missing_uclibc_feature {feature} {
+ return [check_no_compiler_messages $feature object "
+ #include <features.h>
+ #if !defined (__UCLIBC) || defined (__${feature}__)
+ #error FOO
+ #endif
+ "]
+}
+
+# Return true if this is a Newlib target.
+
+proc check_effective_target_newlib {} {
+ return [check_no_compiler_messages newlib object {
+ #include <newlib.h>
+ }]
+}
+
+# Return 1 if
+# (a) an error of a few ULP is expected in string to floating-point
+# conversion functions; and
+# (b) overflow is not always detected correctly by those functions.
+
+proc check_effective_target_lax_strtofp {} {
+ # By default, assume that all uClibc targets suffer from this.
+ return [check_effective_target_uclibc]
+}
+
+# Return 1 if this is a target for which wcsftime is a dummy
+# function that always returns 0.
+
+proc check_effective_target_dummy_wcsftime {} {
+ # By default, assume that all uClibc targets suffer from this.
+ return [check_effective_target_uclibc]
+}
+
+# Return 1 if constructors with initialization priority arguments are
+# supposed on this target.
+
+proc check_effective_target_init_priority {} {
+ return [check_no_compiler_messages init_priority assembly "
+ void f() __attribute__((constructor (1000)));
+ void f() \{\}
+ "]
+}
+
# Return 1 if the target matches the effective target 'arg', 0 otherwise.
# This can be used with any check_* proc that takes no argument and
# returns only 1 or 0. It could be used with check_* procs that take
const char *var = "String";
} {-O2}]
}
+
+# Return 1 if target has the basic signed and unsigned types in
+# <stdint.h>, 0 otherwise.
+
+proc check_effective_target_stdint_types { } {
+ return [check_no_compiler_messages stdint_types assembly {
+ #include <stdint.h>
+ int8_t a; int16_t b; int32_t c; int64_t d;
+ uint8_t e; uint16_t f; uint32_t g; uint64_t h;
+ }]
+}
+
+# Return 1 if programs are intended to be run on a simulator
+# (i.e. slowly) rather than hardware (i.e. fast).
+
+proc check_effective_target_simulator { } {
+
+ # All "src/sim" simulators set this one.
+ if [board_info target exists is_simulator] {
+ return [board_info target is_simulator]
+ }
+
+ # The "sid" simulators don't set that one, but at least they set
+ # this one.
+ if [board_info target exists slow_simulator] {
+ return [board_info target slow_simulator]
+ }
+
+ return 0
+}
+
+# Return 1 if the target is a VxWorks RTP.
+
+proc check_effective_target_vxworks_kernel { } {
+ return [check_no_compiler_messages vxworks_kernel assembly {
+ #if !defined __vxworks || defined __RTP__
+ #error NO
+ #endif
+ }]
+}
+
+# Return 1 if the target is expected to provide wide character support.
+
+proc check_effective_target_wchar { } {
+ if {[check_missing_uclibc_feature UCLIBC_HAS_WCHAR]} {
+ return 0
+ }
+ return [check_no_compiler_messages wchar assembly {
+ #include <wchar.h>
+ }]
+}
+
+# Return 1 if the target has <pthread.h>.
+
+proc check_effective_target_pthread_h { } {
+ return [check_no_compiler_messages pthread_h assembly {
+ #include <pthread.h>
+ }]
+}
+
+# Return 1 if the target can truncate a file from a file-descriptor,
+# as used by libgfortran/io/unix.c:fd_truncate; i.e. ftruncate or
+# chsize. We test for a trivially functional truncation; no stubs.
+# As libgfortran uses _FILE_OFFSET_BITS 64, we do too; it'll cause a
+# different function to be used.
+
+proc check_effective_target_fd_truncate { } {
+ set prog {
+ #define _FILE_OFFSET_BITS 64
+ #include <unistd.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ int main ()
+ {
+ FILE *f = fopen ("tst.tmp", "wb");
+ int fd;
+ const char t[] = "test writing more than ten characters";
+ char s[11];
+ fd = fileno (f);
+ write (fd, t, sizeof (t) - 1);
+ lseek (fd, 0, 0);
+ if (ftruncate (fd, 10) != 0)
+ exit (1);
+ close (fd);
+ f = fopen ("tst.tmp", "rb");
+ if (fread (s, 1, sizeof (s), f) != 10 || strncmp (s, t, 10) != 0)
+ exit (1);
+ exit (0);
+ }
+ }
+
+ if { [check_runtime ftruncate $prog] } {
+ return 1;
+ }
+
+ regsub "ftruncate" $prog "chsize" prog
+ return [check_runtime chsize $prog]
+}
+
+# Add to FLAGS all the target-specific flags needed to access the c99 runtime.
+
+proc add_options_for_c99_runtime { flags } {
+ if { [istarget *-*-solaris2*] } {
+ return "$flags -std=c99"
+ }
+ if { [istarget powerpc-*-darwin*] } {
+ return "$flags -mmacosx-version-min=10.3"
+ }
+ return $flags
+}
+
+# Return 1 if the target provides a full C99 runtime.
+
+proc check_effective_target_c99_runtime { } {
+ return [check_cached_effective_target c99_runtime {
+ global srcdir
+
+ set file [open "$srcdir/gcc.dg/builtins-config.h"]
+ set contents [read $file]
+ close $file
+ append contents {
+ #ifndef HAVE_C99_RUNTIME
+ #error FOO
+ #endif
+ }
+ check_no_compiler_messages_nocache c99_runtime assembly \
+ $contents [add_options_for_c99_runtime ""]
+ }]
+}
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