X-Git-Url: https://oss.titaniummirror.com/gitweb?p=msp430-binutils.git;a=blobdiff_plain;f=ld%2Ftestsuite%2Flib%2Fld-lib.exp;fp=ld%2Ftestsuite%2Flib%2Fld-lib.exp;h=a738747d9109c4fb966ed3ae91ff1627dca18d04;hp=c983f1b4bf7e1c33e4a0edba6a5084a7f7384ed0;hb=d5da4f291af551c0b8b79e1d4a9b173d60e5c10e;hpb=7b5ea4fcdf2819e070665ab5610f8b48e3867c10 diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp index c983f1b..a738747 100644 --- a/ld/testsuite/lib/ld-lib.exp +++ b/ld/testsuite/lib/ld-lib.exp @@ -1,6 +1,6 @@ # Support routines for LD testsuite. # Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, -# 2004, 2005, 2006, 2007 Free Software Foundation, Inc. +# 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. # # This file is part of the GNU Binutils. # @@ -24,43 +24,67 @@ proc default_ld_version { ld } { global host_triplet - if { [which $ld] == 0 } then { + if { ![is_remote host] && [which $ld] == 0 } then { perror "$ld does not exist" exit 1 } - catch "exec $ld --version" tmp - set tmp [prune_warnings $tmp] + remote_exec host "$ld --version" "" "/dev/null" "ld.version" + remote_upload host "ld.version" + set tmp [prune_warnings [file_contents "ld.version"]] + remote_file build delete "ld.version" + remote_file host delete "ld.version" + regexp "\[^\n\]* (cygnus-|)(\[-0-9.a-zA-Z-\]+)\[\r\n\].*" $tmp version cyg number if [info exists number] then { clone_output "$ld $number\n" } } -# Link an object using relocation. -# -proc default_ld_relocate { ld target objects } { - global HOSTING_EMU - global host_triplet - global exec_output +proc run_host_cmd { prog command } { + global link_output - if { [which $ld] == 0 } then { - perror "$ld does not exist" + if { ![is_remote host] && [which "$prog"] == 0 } then { + perror "$prog does not exist" return 0 } - catch "exec rm -f $target" exec_output + verbose -log "$prog $command" + set status [remote_exec host [concat sh -c [list "$prog $command 2>&1"]] "" "/dev/null" "ld.tmp"] + remote_upload host "ld.tmp" + set link_output [file_contents "ld.tmp"] + regsub "\n$" $link_output "" link_output + if { [lindex $status 0] != 0 && [string match "" $link_output] } then { + append link_output "child process exited abnormally" + } + remote_file build delete ld.tmp + remote_file host delete ld.tmp - verbose -log "$ld $HOSTING_EMU -o $target -r $objects" + if [string match "" $link_output] then { + return "" + } - catch "exec $ld $HOSTING_EMU -o $target -r $objects" exec_output - set exec_output [prune_warnings $exec_output] + verbose -log "$link_output" + return "$link_output" +} + +proc run_host_cmd_yesno { prog command } { + global exec_output + + set exec_output [prune_warnings [run_host_cmd "$prog" "$command"]] if [string match "" $exec_output] then { - return 1 - } else { - verbose -log "$exec_output" - return 0 + return 1; } + return 0; +} + +# Link an object using relocation. +# +proc default_ld_relocate { ld target objects } { + global HOSTING_EMU + + remote_file host delete $target + return [run_host_cmd_yesno "$ld" "$HOSTING_EMU -o $target -r $objects"] } # Check to see if ld is being invoked with a non-endian output format @@ -126,44 +150,24 @@ proc default_ld_link { ld target objects } { set objs "$HOSTING_CRT0 $objects" set libs "$LIBS $HOSTING_LIBS" - if { [which $ld] == 0 } then { - perror "$ld does not exist" - return 0 - } - if [is_endian_output_format $objects] then { set flags [big_or_little_endian] } else { set flags "" } - catch "exec rm -f $target" exec_output - - verbose -log "$ld $HOSTING_EMU $flags -o $target $objs $libs" + remote_file host delete $target - catch "exec $ld $HOSTING_EMU $flags -o $target $objs $libs" link_output - set exec_output [prune_warnings $link_output] - if [string match "" $exec_output] then { - return 1 - } else { - verbose -log "$exec_output" - return 0 - } + return [run_host_cmd_yesno "$ld" "$HOSTING_EMU $flags -o $target $objs $libs"] } # Link a program using ld, without including any libraries. # proc default_ld_simple_link { ld target objects } { global host_triplet - global link_output global gcc_ld_flag global exec_output - if { [which $ld] == 0 } then { - perror "$ld does not exist" - return 0 - } - if [is_endian_output_format $objects] then { set flags [big_or_little_endian] } else { @@ -183,12 +187,10 @@ proc default_ld_simple_link { ld target objects } { set flags "$gcc_ld_flag $flags" } - catch "exec rm -f $target" exec_output + remote_file host delete $target - verbose -log "$ld $flags -o $target $objects" - - catch "exec $ld $flags -o $target $objects" link_output - set exec_output [prune_warnings $link_output] + set exec_output [run_host_cmd "$ld" "$flags -o $target $objects"] + set exec_output [prune_warnings $exec_output] # We don't care if we get a warning about a non-existent start # symbol, since the default linker script might use ENTRY. @@ -197,7 +199,6 @@ proc default_ld_simple_link { ld target objects } { if [string match "" $exec_output] then { return 1 } else { - verbose -log "$exec_output" return 0 } } @@ -206,6 +207,7 @@ proc default_ld_simple_link { ld target objects } { # proc default_ld_compile { cc source object } { global CFLAGS + global CXXFLAGS global srcdir global subdir global host_triplet @@ -215,14 +217,15 @@ proc default_ld_compile { cc source object } { if {[llength $cc_prog] > 1} then { set cc_prog [lindex $cc_prog 0] } - if {[which $cc_prog] == 0} then { + if {![is_remote host] && [which $cc_prog] == 0} then { perror "$cc_prog does not exist" return 0 } - catch "exec rm -f $object" exec_output + remote_file build delete "$object" + remote_file host delete "$object" - set flags "-I$srcdir/$subdir $CFLAGS" + set flags "-I$srcdir/$subdir" # If we are compiling with gcc, we want to add gcc_gas_flag to # flags. Rather than determine this in some complex way, we guess @@ -240,28 +243,32 @@ proc default_ld_compile { cc source object } { set flags "$gcc_gas_flag $flags" } + if {[string match "*++*" $ccexe]} { + set flags "$flags $CXXFLAGS" + } else { + set flags "$flags $CFLAGS" + } + if [board_info [target_info name] exists multilib_flags] { append flags " [board_info [target_info name] multilib_flags]" } verbose -log "$cc $flags $ccflags -c $source -o $object" - catch "exec $cc $flags $ccflags -c $source -o $object" exec_output + set status [remote_exec host [concat sh -c [list "$cc $flags $ccflags -c $source -o $object 2>&1"]] "" "/dev/null" "ld.tmp"] + remote_upload host "ld.tmp" + set exec_output [file_contents "ld.tmp"] + remote_file build delete "ld.tmp" + remote_file host delete "ld.tmp" set exec_output [prune_warnings $exec_output] if [string match "" $exec_output] then { if {![file exists $object]} then { regexp ".*/(\[^/\]*)$" $source all dobj regsub "\\.c" $dobj ".o" realobj verbose "looking for $realobj" - if {[file exists $realobj]} then { + if {[remote_file host exists $realobj]} then { verbose -log "mv $realobj $object" - catch "exec mv $realobj $object" exec_output - set exec_output [prune_warnings $exec_output] - if {![string match "" $exec_output]} then { - verbose -log "$exec_output" - perror "could not move $realobj to $object" - return 0 - } + remote_upload "$realobj" "$object" } else { perror "$object not found after compilation" return 0 @@ -281,23 +288,14 @@ proc default_ld_assemble { as source object } { global ASFLAGS global host_triplet - if {[which $as] == 0} then { - perror "$as does not exist" - return 0 - } - if ![info exists ASFLAGS] { set ASFLAGS "" } set flags [big_or_little_endian] - - verbose -log "$as $flags $ASFLAGS -o $object $source" - - catch "exec $as $flags $ASFLAGS -o $object $source" exec_output + set exec_output [run_host_cmd "$as" "$flags $ASFLAGS -o $object $source"] set exec_output [prune_warnings $exec_output] if [string match "" $exec_output] then { return 1 } else { - verbose -log "$exec_output" perror "$source: assembly failed" return 0 } @@ -310,11 +308,6 @@ proc default_ld_nm { nm nmflags object } { global nm_output global host_triplet - if {[which $nm] == 0} then { - perror "$nm does not exist" - return 0 - } - if {[info exists nm_output]} { unset nm_output } @@ -326,15 +319,20 @@ proc default_ld_nm { nm nmflags object } { set old_lc_all $env(LC_ALL) } set env(LC_ALL) "C" + verbose -log "$nm $NMFLAGS $nmflags $object >tmpdir/nm.out" - catch "exec $nm $NMFLAGS $nmflags $object >tmpdir/nm.out" exec_output + set status [remote_exec host [concat sh -c [list "$nm $NMFLAGS $nmflags $object 2>ld.stderr"]] "" "/dev/null" "tmpdir/nm.out"] if {[info exists old_lc_all]} { set env(LC_ALL) $old_lc_all } else { unset env(LC_ALL) } - set exec_output [prune_warnings $exec_output] + remote_upload host "ld.stderr" + remote_upload host "tmpdir/nm.out" "tmpdir/nm.out" + set exec_output [prune_warnings [file_contents "ld.stderr"]] + remote_file host delete "ld.stderr" + remote_file build delete "ld.stderr" if [string match "" $exec_output] then { set file [open tmpdir/nm.out r] while { [gets $file line] != -1 } { @@ -354,6 +352,47 @@ proc default_ld_nm { nm nmflags object } { } } +# Define various symbols needed when not linking against all +# target libs. +proc ld_simple_link_defsyms {} { + + set flags "--defsym __stack_chk_fail=0" + + # ARM targets call __gccmain + if {[istarget arm*-*-*] || \ + [istarget strongarm*-*-*] || \ + [istarget xscale*-*-*] || \ + [istarget thumb-*-*] } { + append flags " --defsym __gccmain=0" + } + + # PowerPC EABI code calls __eabi. + if {[istarget powerpc*-*-eabi*] || [istarget powerpc*-*-rtems*]} { + append flags " --defsym __eabi=0" + } + + # mn10200 code calls __truncsipsi2_d0_d2. + if {[istarget mn10200*-*-*]} then { + append flags " --defsym __truncsipsi2_d0_d2=0" + } + + # m6811/m6812 code has references to soft registers. + if {[istarget m6811-*-*] || [istarget m6812-*-*]} { + append flags " --defsym _.frame=0 --defsym _.d1=0 --defsym _.d2=0" + append flags " --defsym _.d3=0 --defsym _.d4=0" + append flags " --defsym _.tmp=0 --defsym _.xy=0 --defsym _.z=0" + } + + # Some OpenBSD targets have ProPolice and reference __guard and + # __stack_smash_handler. + if [istarget *-*-openbsd*] { + append flags " --defsym __guard=0" + append flags " --defsym __stack_smash_handler=0" + } + + return $flags +} + # True if the object format is known to be ELF. # proc is_elf_format {} { @@ -364,6 +403,7 @@ proc is_elf_format {} { && ![istarget hppa*64*-*-hpux*] \ && ![istarget *-*-linux*] \ && ![istarget frv-*-uclinux*] \ + && ![istarget bfin-*-uclinux] \ && ![istarget *-*-irix5*] \ && ![istarget *-*-irix6*] \ && ![istarget *-*-netbsd*] \ @@ -449,6 +489,7 @@ proc is_aout_format {} { proc is_pecoff_format {} { if { ![istarget *-*-mingw*] \ && ![istarget *-*-cygwin*] \ + && ![istarget *-*-cegcc*] \ && ![istarget *-*-pe*] } { return 0 } @@ -566,6 +607,9 @@ proc simple_diff { file_1 file_2 } { # Link assembled files using FLAGS, in the order of the "source" # directives, when using multiple files. # +# ld_after_inputfiles: FLAGS +# Similar to "ld", but put after all input files. +# # objcopy_linked_file: FLAGS # Run objcopy on the linked file with the specified flags. # This lets you transform the linked file using objcopy, before the @@ -600,7 +644,8 @@ proc simple_diff { file_1 file_2 } { # # target: TARGET # Only run the test for TARGET. This may occur more than once; the -# target being tested must match at least one. +# target being tested must match at least one. You may provide target +# name "cfi" for any target supporting the CFI statements. # # notarget: TARGET # Do not run the test for TARGET. This may occur more than once; @@ -627,7 +672,7 @@ proc run_dump_test { name } { global OBJDUMP NM AS OBJCOPY READELF LD global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS global host_triplet runtests - global env + global env verbose if [string match "*/*" $name] { set file $name @@ -651,6 +696,7 @@ proc run_dump_test { name } { set run_objcopy 0 set opts(as) {} set opts(ld) {} + set opts(ld_after_inputfiles) {} set opts(xfail) {} set opts(target) {} set opts(notarget) {} @@ -706,8 +752,15 @@ proc run_dump_test { name } { } } } + if { $opt_name == "as" || $opt_name == "ld" } { + set opt_val [subst $opt_val] + } set opts($opt_name) [concat $opts($opt_name) $opt_val] } + foreach opt { as ld } { + regsub {\[big_or_little_endian\]} $opts($opt) \ + [big_or_little_endian] opts($opt) + } # Decide early whether we should run the test for this target. if { [llength $opts(target)] > 0 } { @@ -801,10 +854,13 @@ proc run_dump_test { name } { set cmd "$AS $ASFLAGS $opts(as) $asflags($sourcefile) -o $objfile $sourcefile" send_log "$cmd\n" - set cmdret [catch "exec $cmd" comp_output] - set comp_output [prune_warnings $comp_output] + set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"] + remote_upload host "ld.tmp" + set comp_output [prune_warnings [file_contents "ld.tmp"]] + remote_file host delete "ld.tmp" + remote_file build delete "ld.tmp" - if { $cmdret != 0 || ![string match "" $comp_output] } then { + if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then { send_log "$comp_output\n" verbose "$comp_output" 3 @@ -833,46 +889,35 @@ proc run_dump_test { name } { # Add -L$srcdir/$subdir so that the linker command can use # linker scripts in the source directory. set cmd "$LD $LDFLAGS -L$srcdir/$subdir \ - $opts(ld) -o $objfile $objfiles" + $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)" send_log "$cmd\n" - set cmdret [catch "exec $cmd" comp_output] - set comp_output [prune_warnings $comp_output] - - if { $cmdret != 0 } then { - # If the executed program writes to stderr and stderr is not - # redirected, exec *always* returns failure, regardless of the - # program exit code. Thankfully, we can retrieve the true - # return status from a special variable. Redirection would - # cause a Tcl-specific message to be appended, and we'd rather - # not deal with that if we can help it. - global errorCode - if { [lindex $errorCode 0] == "NONE" } { - set cmdret 0 - } - } + set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"] + remote_upload host "ld.tmp" + set comp_output [file_contents "ld.tmp"] + remote_file host delete "ld.tmp" + remote_file build delete "ld.tmp" + set cmdret [lindex $cmdret 0] if { $cmdret == 0 && $run_objcopy } { set infile $objfile set objfile "tmpdir/dump1" - catch "exec rm -f $objfile" exec_output + remote_file host delete $objfile # Note that we don't use OBJCOPYFLAGS here; any flags must be # explicitly specified. set cmd "$OBJCOPY $opts(objcopy_linked_file) $infile $objfile" send_log "$cmd\n" - set cmdret [catch "exec $cmd" comp_output] - append comp_output [prune_warnings $comp_output] - - if { $cmdret != 0 } then { - global errorCode - if { [lindex $errorCode 0] == "NONE" } { - set cmdret 0 - } - } + set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"] + remote_upload host "ld.tmp" + append comp_output [file_contents "ld.tmp"] + remote_file host delete "ld.tmp" + remote_file build delete "ld.tmp" + set cmdret [lindex $cmdret 0] } + regsub "\n$" $comp_output "" comp_output if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then { set exitstat "succeeded" if { $cmdret != 0 } { set exitstat "failed" } @@ -907,7 +952,7 @@ proc run_dump_test { name } { eval set progopts \$[string toupper $program]FLAGS eval set binary \$[string toupper $program] - if { [which $binary] == 0 } { + if { ![is_remote host] && [which $binary] == 0 } { untested $testname return } @@ -928,23 +973,26 @@ proc run_dump_test { name } { } set env(LC_ALL) "C" send_log "$cmd\n" - catch "exec $cmd" comp_output + set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"] + remote_upload host "ld.tmp" + set comp_output [prune_warnings [file_contents "ld.tmp"]] + remote_file host delete "ld.tmp" + remote_file build delete "ld.tmp" if {[info exists old_lc_all]} { set env(LC_ALL) $old_lc_all } else { unset env(LC_ALL) } - set comp_output [prune_warnings $comp_output] if ![string match "" $comp_output] then { send_log "$comp_output\n" fail $testname return } - verbose_eval {[file_contents $dumpfile]} 3 + if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 } if { [regexp_diff $dumpfile "${file}.d"] } then { fail $testname - verbose "output is [file_contents $dumpfile]" 2 + if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 } return } @@ -1088,9 +1136,25 @@ proc file_contents { filename } { return $contents } +# Create an archive using ar +# +proc ar_simple_create { ar aropts target objects } { + remote_file host delete $target + + set exec_output [run_host_cmd "$ar" "$aropts rc $target $objects"] + set exec_output [prune_warnings $exec_output] + + if [string match "" $exec_output] then { + send_log "$exec_output\n" + return 1 + } else { + return 0 + } +} + # List contains test-items with 3 items followed by 2 lists, one item and # one optional item: -# 0:name 1:ld options 2:assembler options +# 0:name 1:ld/ar options 2:assembler options # 3:filenames of assembler files 4: action and options. 5: name of output file # 6:compiler flags (optional) # @@ -1103,6 +1167,7 @@ proc run_ld_link_tests { ldtests } { global ld global as global nm + global ar global objdump global READELF global srcdir @@ -1110,9 +1175,15 @@ proc run_ld_link_tests { ldtests } { global env global CC global CFLAGS + global runtests foreach testitem $ldtests { set testname [lindex $testitem 0] + + if ![runtest_file_p $runtests $testname] then { + continue + } + set ld_options [lindex $testitem 1] set as_options [lindex $testitem 2] set src_files [lindex $testitem 3] @@ -1156,10 +1227,21 @@ proc run_ld_link_tests { ldtests } { continue } - if ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles"] { + if { [regexp ".*a$" $binfile] } { + if { ![ar_simple_create $ar $ld_options $binfile "$objfiles"] } { + fail $testname + set failed 1 + } else { + set failed 0 + } + } elseif { ![ld_simple_link $ld $binfile "-L$srcdir/$subdir $ld_options $objfiles"] } { fail $testname + set failed 1 } else { set failed 0 + } + + if { $failed == 0 } { foreach actionlist $actions { set action [lindex $actionlist 0] set progopts [lindex $actionlist 1] @@ -1192,15 +1274,19 @@ proc run_ld_link_tests { ldtests } { set old_lc_all $env(LC_ALL) } set env(LC_ALL) "C" - set cmd "$binary $progopts $binfile > dump.out" + set cmd "$binary $progopts $binfile" + set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"] send_log "$cmd\n" - catch "exec $cmd" comp_output + remote_upload host "ld.stderr" + set comp_output [prune_warnings [file_contents "ld.stderr"]] + remote_file host delete "ld.stderr" + remote_file build delete "ld.stderr" + if {[info exists old_lc_all]} { set env(LC_ALL) $old_lc_all } else { unset env(LC_ALL) } - set comp_output [prune_warnings $comp_output] if ![string match "" $comp_output] then { send_log "$comp_output\n" @@ -1208,11 +1294,17 @@ proc run_ld_link_tests { ldtests } { break } + remote_upload host "dump.out" + if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then { verbose "output is [file_contents "dump.out"]" 2 set failed 1 + remote_file build delete "dump.out" + remote_file host delete "dump.out" break } + remote_file build delete "dump.out" + remote_file host delete "dump.out" } } @@ -1231,12 +1323,6 @@ proc run_ld_link_tests { ldtests } { } } - -proc verbose_eval { expr { level 1 } } { - global verbose - if $verbose>$level then { eval verbose "$expr" $level } -} - # This definition is taken from an unreleased version of DejaGnu. Once # that version gets released, and has been out in the world for a few # months at least, it may be safe to delete this copy. @@ -1282,6 +1368,7 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } { global CC global CXX global CFLAGS + global CXXFLAGS global errcnt global exec_output @@ -1316,7 +1403,11 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } { # We ignore warnings since some compilers may generate # incorrect section attributes and the assembler will warn # them. - ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile + if { [ string match "c++" $lang ] } { + ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile + } else { + ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile + } # We have to use $CC to build PIE and shared library. if { [ string match "c" $lang ] } { @@ -1386,7 +1477,7 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } { # List contains test-items with 3 items followed by 2 lists, one item and # one optional item: # 0:name -# 1:link options +# 1:ld or ar options # 2:compile options # 3:filenames of source files # 4:action and options. @@ -1408,6 +1499,8 @@ proc run_cc_link_tests { ldtests } { global CC global CXX global CFLAGS + global CXXFLAGS + global ar foreach testitem $ldtests { set testname [lindex $testitem 0] @@ -1429,7 +1522,11 @@ proc run_cc_link_tests { ldtests } { # We ignore warnings since some compilers may generate # incorrect section attributes and the assembler will warn # them. - ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile + if { [ string match "c++" $lang ] } { + ld_compile "$CXX -c $CXXFLAGS $cflags" $srcdir/$subdir/$src_file $objfile + } else { + ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile + } } # Clear error and warning counts. @@ -1441,10 +1538,21 @@ proc run_cc_link_tests { ldtests } { set cc_cmd $CC } - if ![ld_simple_link $cc_cmd $binfile "-L$srcdir/$subdir $ldflags $objfiles"] { + if { [regexp ".*a$" $binfile] } { + if { ![ar_simple_create $ar $ldflags $binfile "$objfiles"] } { + fail $testname + set failed 1 + } else { + set failed 0 + } + } elseif { ![ld_simple_link $cc_cmd $binfile "-L$srcdir/$subdir $ldflags $objfiles"] } { fail $testname + set failed 1 } else { set failed 0 + } + + if { $failed == 0 } { foreach actionlist $actions { set action [lindex $actionlist 0] set progopts [lindex $actionlist 1] @@ -1515,3 +1623,76 @@ proc run_cc_link_tests { ldtests } { } } } + +# Returns true if --gc-sections is supported on the target. + +proc check_gc_sections_available { } { + global gc_sections_available_saved + global ld + + if {![info exists gc_sections_available_saved]} { + # Some targets don't support gc-sections despite whatever's + # advertised by ld's options. + if { [istarget alpha*-*-*] + || [istarget mep-*-*] + || [istarget ia64-*-*] + || [istarget *-*-cygwin] + || [istarget *-*-mingw*] } { + set gc_sections_available_saved 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 + } + + # Check if the ld used by gcc supports --gc-sections. + set ld_output [remote_exec host $ld "--help"] + if { [ string first "--gc-sections" $ld_output ] >= 0 } { + set gc_sections_available_saved 1 + } else { + set gc_sections_available_saved 0 + } + } + return $gc_sections_available_saved +} + +# Check if the assembler supports CFI statements. + +proc check_as_cfi { } { + global check_as_cfi_result + global as + if [info exists check_as_cfi_result] { + return $check_as_cfi_result + } + set as_file "tmpdir/check_as_cfi.s" + set as_fh [open $as_file w 0666] + puts $as_fh "# Generated file. DO NOT EDIT" + puts $as_fh "\t.cfi_startproc" + puts $as_fh "\t.cfi_endproc" + close $as_fh + remote_download host $as_file + verbose -log "Checking CFI support:" + rename "perror" "check_as_cfi_perror" + proc perror { args } { } + set success [ld_assemble $as $as_file "/dev/null"] + rename "perror" "" + rename "check_as_cfi_perror" "perror" + #remote_file host delete $as_file + set check_as_cfi_result $success + return $success +} + +# Provide virtual target "cfi" for targets supporting CFI. + +rename "istarget" "istarget_ld" +proc istarget { target } { + if {$target == "cfi"} { + return [check_as_cfi] + } + return [istarget_ld $target] +}