diff options
Diffstat (limited to 'binutils-2.21/ld/testsuite/lib/ld-lib.exp')
| -rw-r--r-- | binutils-2.21/ld/testsuite/lib/ld-lib.exp | 1808 |
1 files changed, 1808 insertions, 0 deletions
diff --git a/binutils-2.21/ld/testsuite/lib/ld-lib.exp b/binutils-2.21/ld/testsuite/lib/ld-lib.exp new file mode 100644 index 0000000..3d120c8 --- /dev/null +++ b/binutils-2.21/ld/testsuite/lib/ld-lib.exp @@ -0,0 +1,1808 @@ +# Support routines for LD testsuite. +# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, +# 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. +# +# This file is part of the GNU Binutils. +# +# This file 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 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# 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. + +# Extract and print the version number of ld. +# +proc default_ld_version { ld } { + global host_triplet + + if { ![is_remote host] && [which $ld] == 0 } then { + perror "$ld does not exist" + exit 1 + } + + 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 $number\n" + } +} + +proc run_host_cmd { prog command } { + global link_output + + if { ![is_remote host] && [which "$prog"] == 0 } then { + perror "$prog does not exist" + return 0 + } + + verbose -log "$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 + + if [string match "" $link_output] then { + return "" + } + + verbose -log "$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; + } + 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 +# +proc is_endian_output_format { object_flags } { + + if {[string match "*-oformat binary*" $object_flags] || \ + [string match "*-oformat ieee*" $object_flags] || \ + [string match "*-oformat ihex*" $object_flags] || \ + [string match "*-oformat netbsd-core*" $object_flags] || \ + [string match "*-oformat srec*" $object_flags] || \ + [string match "*-oformat tekhex*" $object_flags] || \ + [string match "*-oformat trad-core*" $object_flags] } then { + return 0 + } else { + return 1 + } +} + +# Look for big-endian or little-endian switches in the multlib +# options and translate these into a -EB or -EL switch. Note +# we cannot rely upon proc process_multilib_options to do this +# for us because for some targets the compiler does not support +# -EB/-EL but it does support -mbig-endian/-mlittle-endian, and +# the site.exp file will include the switch "-mbig-endian" +# (rather than "big-endian") which is not detected by proc +# process_multilib_options. +# +proc big_or_little_endian {} { + + if [board_info [target_info name] exists multilib_flags] { + set tmp_flags " [board_info [target_info name] multilib_flags]" + + foreach x $tmp_flags { + case $x in { + {*big*endian eb EB -eb -EB -mb -meb} { + set flags " -EB" + return $flags + } + {*little*endian el EL -el -EL -ml -mel} { + set flags " -EL" + return $flags + } + } + } + } + + set flags "" + return $flags +} + +# Link a program using ld. +# +proc default_ld_link { ld target objects } { + global HOSTING_EMU + global HOSTING_CRT0 + global HOSTING_LIBS + global LIBS + global host_triplet + global link_output + global exec_output + + set objs "$HOSTING_CRT0 $objects" + set libs "$LIBS $HOSTING_LIBS" + + if [is_endian_output_format $objects] then { + set flags [big_or_little_endian] + } else { + set flags "" + } + + remote_file host delete $target + + return [run_host_cmd_yesno "$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 gcc_ld_flag + global exec_output + + if [is_endian_output_format $objects] then { + set flags [big_or_little_endian] + } else { + set flags "" + } + + # If we are compiling with gcc, we want to add gcc_ld_flag to + # flags. Rather than determine this in some complex way, we guess + # based on the name of the compiler. + set ldexe $ld + set ldparm [string first " " $ld] + set ldflags "" + if { $ldparm > 0 } then { + set ldflags [string range $ld $ldparm end] + set ldexe [string range $ld 0 $ldparm] + set ld $ldexe + } + set ldexe [string replace $ldexe 0 [string last "/" $ldexe] ""] + if {[string match "*gcc*" $ldexe] || [string match "*++*" $ldexe]} then { + set ldflags "$gcc_ld_flag $ldflags" + } + + remote_file host delete $target + + set exec_output [run_host_cmd "$ld" "$ldflags $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. + regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output + + if [string match "" $exec_output] then { + return 1 + } else { + return 0 + } +} + +# Compile an object using cc. +# +proc default_ld_compile { cc source object } { + global CFLAGS + global CXXFLAGS + global srcdir + global subdir + global host_triplet + global gcc_gas_flag + + set cc_prog $cc + if {[llength $cc_prog] > 1} then { + set cc_prog [lindex $cc_prog 0] + } + if {![is_remote host] && [which $cc_prog] == 0} then { + perror "$cc_prog does not exist" + return 0 + } + + remote_file build delete "$object" + remote_file host delete "$object" + + 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 + # based on the name of the compiler. + set ccexe $cc + set ccparm [string first " " $cc] + set ccflags "" + if { $ccparm > 0 } then { + set ccflags [string range $cc $ccparm end] + set ccexe [string range $cc 0 $ccparm] + set cc $ccexe + } + set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""] + if {[string match "*gcc*" $ccexe] || [string match "*++*" $ccexe]} then { + set flags "$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 $object" + + set status [remote_exec host [concat sh -c [list "$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 {[remote_file host exists $realobj]} then { + verbose -log "mv $realobj $object" + remote_upload "$realobj" "$object" + } else { + perror "$object not found after compilation" + return 0 + } + } + return 1 + } else { + verbose -log "$exec_output" + perror "$source: compilation failed" + return 0 + } +} + +# Assemble a file. +# +proc default_ld_assemble { as source object } { + global ASFLAGS + global host_triplet + + if ![info exists ASFLAGS] { set ASFLAGS "" } + + set flags [big_or_little_endian] + set exec_output [run_host_cmd "$as" "$flags $ASFLAGS -o $object $source"] + set exec_output [prune_warnings $exec_output] + if [string match "" $exec_output] then { + return 1 + } else { + perror "$source: assembly failed" + return 0 + } +} + +# Run nm on a file, putting the result in the array nm_output. +# +proc default_ld_nm { nm nmflags object } { + global NMFLAGS + global nm_output + global host_triplet + + if {[info exists nm_output]} { + unset nm_output + } + + if ![info exists NMFLAGS] { set NMFLAGS "" } + + # Ensure consistent sorting of symbols + if {[info exists env(LC_ALL)]} { + set old_lc_all $env(LC_ALL) + } + set env(LC_ALL) "C" + + verbose -log "$nm $NMFLAGS $nmflags $object >tmpdir/nm.out" + + set status [remote_exec host [concat sh -c [list "$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) + } + 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 $file line] != -1 } { + verbose "$line" 2 + if [regexp "^(\[0-9a-fA-F\]+) \[a-zA-Z0-9\] \\.*(.+)$" $line whole value name] { + set name [string trimleft $name "_"] + verbose "Setting nm_output($name) to 0x$value" 2 + set nm_output($name) 0x$value + } + } + close $file + return 1 + } else { + verbose -log "$exec_output" + perror "$object: nm failed" + return 0 + } +} + +# 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" + } + + # Windows targets need __main, prefixed with underscore. + if {[istarget *-*-cygwin* ] || [istarget *-*-mingw*]} { + append flags " --defsym ___main=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 {} { + if { ![istarget *-*-sysv4*] + && ![istarget *-*-unixware*] + && ![istarget *-*-elf*] + && ![istarget *-*-eabi*] + && ![istarget *-*-rtems*] + && ![istarget hppa*64*-*-hpux*] + && ![istarget ia64-*-hpux*] + && ![istarget *-*-linux*] + && ![istarget frv-*-uclinux*] + && ![istarget bfin-*-uclinux] + && ![istarget sh*-*-uclinux*] + && ![istarget *-*-irix5*] + && ![istarget *-*-irix6*] + && ![istarget *-*-netbsd*] + && ![istarget *-*-openbsd*] + && ![istarget *-*-solaris2*] } { + return 0 + } + + if { [istarget *-*-linux*aout*] + || [istarget *-*-linux*oldld*] + || [istarget h8500-*-rtems*] + || [istarget i960-*-rtems*] + || [istarget *-*-rtemscoff*] } { + return 0 + } + + if { ![istarget *-*-netbsdelf*] + && ([istarget *-*-netbsd*aout*] + || [istarget *-*-netbsdpe*] + || [istarget arm*-*-netbsd*] + || [istarget sparc-*-netbsd*] + || [istarget i*86-*-netbsd*] + || [istarget m68*-*-netbsd*] + || [istarget vax-*-netbsd*] + || [istarget ns32k-*-netbsd*]) } { + return 0 + } + + if { [istarget arm-*-openbsd*] + || [istarget i386-*-openbsd\[0-2\].*] + || [istarget i386-*-openbsd3.\[0-2\]] + || [istarget m68*-*-openbsd*] + || [istarget ns32k-*-openbsd*] + || [istarget sparc-*-openbsd\[0-2\].*] + || [istarget sparc-*-openbsd3.\[0-1\]] + || [istarget vax-*-openbsd*] } { + return 0 + } + + return 1 +} + +# True if the object format is known to be 64-bit ELF. +# +proc is_elf64 { binary_file } { + global READELF + global READELFFLAGS + + set readelf_size "" + catch "exec $READELF $READELFFLAGS -h $binary_file > readelf.out" got + + if ![string match "" $got] then { + return 0 + } + + if { ![regexp "\n\[ \]*Class:\[ \]*ELF(\[0-9\]+)\n" \ + [file_contents readelf.out] nil readelf_size] } { + return 0 + } + + if { $readelf_size == "64" } { + return 1 + } + + return 0 +} + +# True if the object format is known to be a.out. +# +proc is_aout_format {} { + if { [istarget *-*-netbsdelf] + || [istarget sparc64-*-netbsd*] + || [istarget sparc64-*-openbsd*] } { + return 0 + } + if { [istarget *-*-*\[ab\]out*] + || [istarget *-*-linux*oldld*] + || [istarget *-*-bsd*] + || [istarget *-*-msdos*] + || [istarget arm-*-netbsd*] + || [istarget arm-*-openbsd*] + || [istarget arm-*-riscix*] + || [istarget i?86-*-freebsd\[12\]*] + || [istarget i?86-*-netbsd*] + || [istarget i?86-*-openbsd\[0-2\]*] + || [istarget i?86-*-openbsd3.\[0-2\]*] + || [istarget i?86-*-vsta] + || [istarget i?86-*-mach*] + || [istarget m68*-*-netbsd*] + || [istarget m68*-*-openbsd*] + || [istarget ns32k-*-*] + || [istarget pdp11-*-*] + || [istarget sparc*-*-sunos4*] + || [istarget sparc*-*-netbsd*] + || [istarget sparc*-*-openbsd\[0-2\]*] + || [istarget sparc*-*-openbsd3.\[0-1\]*] + || [istarget sparc*-fujitsu-none] + || [istarget vax-dec-ultrix*] + || [istarget vax-*-netbsd] } { + return 1 + } + return 0 +} + +# True if the object format is known to be PE COFF. +# +proc is_pecoff_format {} { + if { ![istarget *-*-mingw*] + && ![istarget *-*-cygwin*] + && ![istarget *-*-cegcc*] + && ![istarget *-*-pe*] } { + return 0 + } + + return 1 +} + +# Compares two files line-by-line. +# Returns differences if exist. +# Returns null if file(s) cannot be opened. +# +proc simple_diff { file_1 file_2 } { + global target + + set eof -1 + set differences 0 + + if [file exists $file_1] then { + set file_a [open $file_1 r] + } else { + warning "$file_1 doesn't exist" + return + } + + if [file exists $file_2] then { + set file_b [open $file_2 r] + } else { + fail "$file_2 doesn't exist" + return + } + + verbose "# Diff'ing: $file_1 $file_2\n" 2 + + while { [gets $file_a line] != $eof } { + if [regexp "^#.*$" $line] then { + continue + } else { + lappend list_a $line + } + } + close $file_a + + while { [gets $file_b line] != $eof } { + if [regexp "^#.*$" $line] then { + continue + } else { + lappend list_b $line + } + } + close $file_b + + for { set i 0 } { $i < [llength $list_a] } { incr i } { + set line_a [lindex $list_a $i] + set line_b [lindex $list_b $i] + + verbose "\t$file_1: $i: $line_a\n" 3 + verbose "\t$file_2: $i: $line_b\n" 3 + if [string compare $line_a $line_b] then { + verbose -log "\t$file_1: $i: $line_a\n" + verbose -log "\t$file_2: $i: $line_b\n" + + fail "Test: $target" + return + } + } + + if { [llength $list_a] != [llength $list_b] } { + fail "Test: $target" + return + } + + if $differences<1 then { + pass "Test: $target" + } +} + +# run_dump_test FILE +# Copied from gas testsuite, tweaked and further extended. +# +# Assemble a .s file, then run some utility on it and check the output. +# +# There should be an assembly language file named FILE.s in the test +# suite directory, and a pattern file called FILE.d. `run_dump_test' +# will assemble FILE.s, run some tool like `objdump', `objcopy', or +# `nm' on the .o file to produce textual output, and then analyze that +# with regexps. The FILE.d file specifies what program to run, and +# what to expect in its output. +# +# The FILE.d file begins with zero or more option lines, which specify +# flags to pass to the assembler, the program to run to dump the +# assembler's output, and the options it wants. The option lines have +# the syntax: +# +# # OPTION: VALUE +# +# OPTION is the name of some option, like "name" or "objdump", and +# VALUE is OPTION's value. The valid options are described below. +# Whitespace is ignored everywhere, except within VALUE. The option +# list ends with the first line that doesn't match the above syntax +# (hmm, not great for error detection). +# +# The interesting options are: +# +# name: TEST-NAME +# The name of this test, passed to DejaGNU's `pass' and `fail' +# commands. If omitted, this defaults to FILE, the root of the +# .s and .d files' names. +# +# as: FLAGS +# When assembling, pass FLAGS to the assembler. +# If assembling several files, you can pass different assembler +# options in the "source" directives. See below. +# +# ld: FLAGS +# 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 +# result is analyzed by an analyzer program specified below (which +# may in turn *also* be objcopy). +# +# PROG: PROGRAM-NAME +# The name of the program to run to analyze the .o file produced +# by the assembler or the linker output. This can be omitted; +# run_dump_test will guess which program to run by seeing which of +# the flags options below is present. +# +# objdump: FLAGS +# nm: FLAGS +# objcopy: FLAGS +# Use the specified program to analyze the assembler or linker +# output file, and pass it FLAGS, in addition to the output name. +# Note that they are run with LC_ALL=C in the environment to give +# consistent sorting of symbols. +# +# source: SOURCE [FLAGS] +# Assemble the file SOURCE.s using the flags in the "as" directive +# and the (optional) FLAGS. If omitted, the source defaults to +# FILE.s. +# This is useful if several .d files want to share a .s file. +# More than one "source" directive can be given, which is useful +# when testing linking. +# +# xfail: TARGET +# The test is expected to fail on TARGET. This may occur more than +# once. +# +# target: TARGET +# Only run the test for TARGET. This may occur more than once; the +# 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; +# the target being tested must not match any of them. +# +# error: REGEX +# An error with message matching REGEX must be emitted for the test +# to pass. The PROG, objdump, nm and objcopy options have no +# meaning and need not supplied if this is present. Multiple "error" +# directives append to the expected linker error message. +# +# warning: REGEX +# Expect a linker warning matching REGEX. It is an error to issue +# both "error" and "warning". Multiple "warning" directives +# append to the expected linker warning message. +# +# Each option may occur at most once unless otherwise mentioned. +# +# After the option lines come regexp lines. `run_dump_test' calls +# `regexp_diff' to compare the output of the dumping tool against the +# regexps in FILE.d. `regexp_diff' is defined later in this file; see +# further comments there. +# +proc run_dump_test { name } { + global subdir srcdir + global OBJDUMP NM AS OBJCOPY READELF LD + global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS + global host_triplet runtests + global env verbose + + if [string match "*/*" $name] { + set file $name + set name [file tail $name] + } else { + set file "$srcdir/$subdir/$name" + } + + if ![runtest_file_p $runtests $name] then { + return + } + + set opt_array [slurp_options "${file}.d"] + if { $opt_array == -1 } { + perror "error reading options from $file.d" + unresolved $subdir/$name + return + } + set dumpfile tmpdir/dump.out + set run_ld 0 + set run_objcopy 0 + set opts(as) {} + set opts(ld) {} + set opts(ld_after_inputfiles) {} + set opts(xfail) {} + set opts(target) {} + set opts(notarget) {} + set opts(objdump) {} + set opts(nm) {} + set opts(objcopy) {} + set opts(readelf) {} + set opts(name) {} + set opts(PROG) {} + set opts(source) {} + set opts(error) {} + set opts(warning) {} + set opts(objcopy_linked_file) {} + set asflags(${file}.s) {} + + foreach i $opt_array { + set opt_name [lindex $i 0] + set opt_val [lindex $i 1] + if ![info exists opts($opt_name)] { + perror "unknown option $opt_name in file $file.d" + unresolved $subdir/$name + return + } + + switch -- $opt_name { + xfail {} + target {} + notarget {} + warning {} + error {} + source { + # Move any source-specific as-flags to a separate array to + # simplify processing. + if { [llength $opt_val] > 1 } { + set asflags([lindex $opt_val 0]) [lrange $opt_val 1 end] + set opt_val [lindex $opt_val 0] + } else { + set asflags($opt_val) {} + } + } + default { + if [string length $opts($opt_name)] { + perror "option $opt_name multiply set in $file.d" + unresolved $subdir/$name + return + } + + # A single "# ld:" with no options should do the right thing. + if { $opt_name == "ld" } { + set run_ld 1 + } + # Likewise objcopy_linked_file. + if { $opt_name == "objcopy_linked_file" } { + set run_objcopy 1 + } + } + } + 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 } { + set targmatch 0 + foreach targ $opts(target) { + if [istarget $targ] { + set targmatch 1 + break + } + } + if { $targmatch == 0 } { + return + } + } + foreach targ $opts(notarget) { + if [istarget $targ] { + return + } + } + + set program "" + # It's meaningless to require an output-testing method when we + # expect an error. + if { $opts(error) == "" } { + if {$opts(PROG) != ""} { + switch -- $opts(PROG) { + objdump { set program objdump } + nm { set program nm } + objcopy { set program objcopy } + readelf { set program readelf } + default + { perror "unrecognized program option $opts(PROG) in $file.d" + unresolved $subdir/$name + return } + } + } else { + # Guess which program to run, by seeing which option was specified. + foreach p {objdump objcopy nm readelf} { + if {$opts($p) != ""} { + if {$program != ""} { + perror "ambiguous dump program in $file.d" + unresolved $subdir/$name + return + } else { + set program $p + } + } + } + } + if { $program == "" && $opts(warning) == "" } { + perror "dump program unspecified in $file.d" + unresolved $subdir/$name + return + } + } + + if { $opts(name) == "" } { + set testname "$subdir/$name" + } else { + set testname $opts(name) + } + + if { $opts(source) == "" } { + set sourcefiles [list ${file}.s] + } else { + set sourcefiles {} + foreach sf $opts(source) { + if { [string match "/*" $sf] } { + lappend sourcefiles "$sf" + } else { + lappend sourcefiles "$srcdir/$subdir/$sf" + } + # Must have asflags indexed on source name. + set asflags($srcdir/$subdir/$sf) $asflags($sf) + } + } + + # Time to setup xfailures. + foreach targ $opts(xfail) { + setup_xfail $targ + } + + # Assemble each file. + set objfiles {} + for { set i 0 } { $i < [llength $sourcefiles] } { incr i } { + set sourcefile [lindex $sourcefiles $i] + + set objfile "tmpdir/dump$i.o" + catch "exec rm -f $objfile" exec_output + lappend objfiles $objfile + set cmd "$AS $ASFLAGS $opts(as) $asflags($sourcefile) -o $objfile $sourcefile" + + send_log "$cmd\n" + 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 { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then { + send_log "$comp_output\n" + verbose "$comp_output" 3 + + set exitstat "succeeded" + if { $cmdret != 0 } { set exitstat "failed" } + verbose -log "$exitstat with: <$comp_output>" + fail $testname + return + } + } + + set expmsg $opts(error) + if { $opts(warning) != "" } { + if { $expmsg != "" } { + perror "$testname: mixing error and warning test-directives" + return + } + set expmsg $opts(warning) + } + + # Perhaps link the file(s). + if { $run_ld } { + set objfile "tmpdir/dump" + catch "exec rm -f $objfile" exec_output + + # Add -L$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 $opts(ld_after_inputfiles)" + + send_log "$cmd\n" + 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" + 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 [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 { $cmdret != 0 } { set exitstat "failed" } + verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>" + send_log "$comp_output\n" + verbose "$comp_output" 3 + + if { ($expmsg == "") == ($comp_output == "") \ + && [regexp $expmsg $comp_output] \ + && (($cmdret == 0) == ($opts(error) == "")) } { + # We have the expected output from ld. + if { $opts(error) != "" || $program == "" } { + pass $testname + return + } + } else { + verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>" + fail $testname + return + } + } + } else { + set objfile "tmpdir/dump0.o" + } + + # We must not have expected failure if we get here. + if { $opts(error) != "" } { + fail $testname + return + } + + set progopts1 $opts($program) + eval set progopts \$[string toupper $program]FLAGS + eval set binary \$[string toupper $program] + + if { ![is_remote host] && [which $binary] == 0 } { + untested $testname + return + } + + if { $progopts1 == "" } { set $progopts1 "-r" } + verbose "running $binary $progopts $progopts1" 3 + + # Objcopy, unlike the other two, won't send its output to stdout, + # so we have to run it specially. + set cmd "$binary $progopts $progopts1 $objfile > $dumpfile" + if { $program == "objcopy" } { + set cmd "$binary $progopts $progopts1 $objfile $dumpfile" + } + + # Ensure consistent sorting of symbols + if {[info exists env(LC_ALL)]} { + set old_lc_all $env(LC_ALL) + } + set env(LC_ALL) "C" + send_log "$cmd\n" + set cmdret [remote_exec host [concat sh -c [list "$cmd 2>ld.tmp"]] "" "/dev/null"] + set cmdret [lindex $cmdret 0] + 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) + } + if { $cmdret != 0 || $comp_output != "" } { + send_log "exited abnormally with $cmdret, output:$comp_output\n" + fail $testname + return + } + + if { $verbose > 2 } then { verbose "output is [file_contents $dumpfile]" 3 } + if { [regexp_diff $dumpfile "${file}.d"] } then { + fail $testname + if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 } + return + } + + pass $testname +} + +proc slurp_options { file } { + if [catch { set f [open $file r] } x] { + #perror "couldn't open `$file': $x" + perror "$x" + return -1 + } + set opt_array {} + # whitespace expression + set ws {[ ]*} + set nws {[^ ]*} + # whitespace is ignored anywhere except within the options list; + # option names are alphabetic plus underscore only. + set pat "^#${ws}(\[a-zA-Z_\]*)$ws:${ws}(.*)$ws\$" + while { [gets $f line] != -1 } { + set line [string trim $line] + # Whitespace here is space-tab. + if [regexp $pat $line xxx opt_name opt_val] { + # match! + lappend opt_array [list $opt_name $opt_val] + } else { + break + } + } + close $f + return $opt_array +} + +# regexp_diff, copied from gas, based on simple_diff above. +# compares two files line-by-line +# file1 contains strings, file2 contains regexps and #-comments +# blank lines are ignored in either file +# returns non-zero if differences exist +# +proc regexp_diff { file_1 file_2 } { + + set eof -1 + set end_1 0 + set end_2 0 + set differences 0 + set diff_pass 0 + set fail_if_match 0 + + if [file exists $file_1] then { + set file_a [open $file_1 r] + } else { + warning "$file_1 doesn't exist" + return 1 + } + + if [file exists $file_2] then { + set file_b [open $file_2 r] + } else { + fail "$file_2 doesn't exist" + close $file_a + return 1 + } + + verbose " Regexp-diff'ing: $file_1 $file_2" 2 + + while { 1 } { + set line_a "" + set line_b "" + while { [string length $line_a] == 0 } { + if { [gets $file_a line_a] == $eof } { + set end_1 1 + break + } + } + while { [string length $line_b] == 0 || [string match "#*" $line_b] } { + if [ string match "#pass" $line_b ] { + set end_2 1 + set diff_pass 1 + break + } elseif [ string match "#failif" $line_b ] { + send_log "fail if no difference\n" + verbose "fail if no difference" 3 + set fail_if_match 1 + } elseif [ string match "#..." $line_b ] { + if { [gets $file_b line_b] == $eof } { + set end_2 1 + set diff_pass 1 + break + } + verbose "looking for \"^$line_b$\"" 3 + while { ![regexp "^$line_b$" "$line_a"] } { + verbose "skipping \"$line_a\"" 3 + if { [gets $file_a line_a] == $eof } { + set end_1 1 + break + } + } + break + } + if { [gets $file_b line_b] == $eof } { + set end_2 1 + break + } + } + + if { $diff_pass } { + break + } elseif { $end_1 && $end_2 } { + break + } elseif { $end_1 } { + send_log "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1\n" + verbose "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1" 3 + set differences 1 + break + } elseif { $end_2 } { + send_log "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" + verbose "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" 3 + set differences 1 + break + } else { + verbose "regexp \"^$line_b$\"\nline \"$line_a\"" 3 + if ![regexp "^$line_b$" "$line_a"] { + verbose "regexp_diff match failure\n" 3 + send_log "regexp_diff match failure\n" + send_log "regexp \"^$line_b$\"\nline \"$line_a\"\n" + set differences 1 + } + } + } + + if { $differences == 0 && !$diff_pass && [eof $file_a] != [eof $file_b] } { + send_log "$file_1 and $file_2 are different lengths\n" + verbose "$file_1 and $file_2 are different lengths" 3 + set differences 1 + } + + if { $fail_if_match } { + if { $differences == 0 } { + set differences 1 + } else { + set differences 0 + } + } + + close $file_a + close $file_b + + return $differences +} + +proc file_contents { filename } { + set file [open $filename r] + set contents [read $file] + close $file + return $contents +} + +proc set_file_contents { filename contents } { + set file [open $filename w] + puts $file "$contents" + close $file +} + +# 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/ar options 2:assembler options +# 3:filenames of assembler files 4: action and options. 5: name of output file +# 6:compiler flags (optional) +# +# Actions: +# objdump: Apply objdump options on result. Compare with regex (last arg). +# nm: Apply nm options on result. Compare with regex (last arg). +# readelf: Apply readelf options on result. Compare with regex (last arg). +# ld: Don't apply anything on result. Compare output during linking with +# regex (second arg). Note that this *must* be the first action if it +# is to be used at all; in all other cases, any output from the linker +# during linking is treated as a sign of an error and FAILs the test. +# +proc run_ld_link_tests { ldtests } { + global ld + global as + global nm + global ar + global objdump + global READELF + global srcdir + global subdir + global env + global CC + global CFLAGS + global runtests + global exec_output + + 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] + set actions [lindex $testitem 4] + set binfile tmpdir/[lindex $testitem 5] + set cflags [lindex $testitem 6] + set objfiles {} + set is_unresolved 0 + set failed 0 + set maybe_failed 0 + set ld_output "" + +# verbose -log "Testname is $testname" +# verbose -log "ld_options is $ld_options" +# verbose -log "as_options is $as_options" +# verbose -log "src_files is $src_files" +# verbose -log "actions is $actions" +# verbose -log "binfile is $binfile" + + # Assemble each file in the test. + foreach src_file $src_files { + set objfile "tmpdir/[file rootname $src_file].o" + lappend objfiles $objfile + + if { [file extension $src_file] == ".c" } { + set as_file "tmpdir/[file rootname $src_file].s" + if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] { + set is_unresolved 1 + break + } + } else { + set as_file "$srcdir/$subdir/$src_file" + } + if ![ld_assemble $as "$as_options $as_file" $objfile] { + set is_unresolved 1 + break + } + } + + # Catch assembler errors. + if { $is_unresolved != 0 } { + unresolved $testname + continue + } + + if { [regexp ".*\\.a$" $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 $objfiles"] } { + set maybe_failed 1 + set ld_output "$exec_output" + } else { + set failed 0 + } + + if { $failed == 0 } { + foreach actionlist $actions { + set action [lindex $actionlist 0] + set progopts [lindex $actionlist 1] + + # There are actions where we run regexp_diff on the + # output, and there are other actions (presumably). + # Handling of the former look the same. + set dump_prog "" + switch -- $action { + objdump + { set dump_prog $objdump } + nm + { set dump_prog $nm } + readelf + { set dump_prog $READELF } + ld + { set dump_prog "ld" } + default + { + perror "Unrecognized action $action" + set is_unresolved 1 + break + } + } + + if { $action == "ld" } { + set dumpfile [lindex $actionlist 1] + verbose "dumpfile is $dumpfile" + set_file_contents "tmpdir/ld.messages" "$ld_output" + verbose "ld.messages has '[file_contents tmpdir/ld.messages]'" + if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$dumpfile"] } then { + verbose "output is $ld_output" 2 + set failed 1 + break + } + set maybe_failed 0 + } elseif { $maybe_failed != 0 } { + set failed 1 + break + } elseif { $dump_prog != "" } { + set dumpfile [lindex $actionlist 2] + set binary $dump_prog + + # Ensure consistent sorting of symbols + if {[info exists env(LC_ALL)]} { + set old_lc_all $env(LC_ALL) + } + set env(LC_ALL) "C" + set cmd "$binary $progopts $binfile" + set status [remote_exec host [concat sh -c [list "$cmd >dump.out 2>ld.stderr"]] "" "/dev/null"] + send_log "$cmd\n" + 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) + } + + if ![string match "" $comp_output] then { + send_log "$comp_output\n" + set failed 1 + 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" + } + } + + if { $failed != 0 } { + fail $testname + } else { if { $is_unresolved == 0 } { + pass $testname + } } + } + + # Catch action errors. + if { $is_unresolved != 0 } { + unresolved $testname + continue + } + } +} + +# 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. +if ![string length [info proc prune_warnings]] { + # + # prune_warnings -- delete various system verbosities from TEXT + # + # An example is: + # ld.so: warning: /usr/lib/libc.so.1.8.1 has older revision than expected 9 + # + # Sites with particular verbose os's may wish to override this in site.exp. + # + proc prune_warnings { text } { + # This is from sun4's. Do it for all machines for now. + # The "\\1" is to try to preserve a "\n" but only if necessary. + regsub -all "(^|\n)(ld.so: warning:\[^\n\]*\n?)+" $text "\\1" text + + # It might be tempting to get carried away and delete blank lines, etc. + # Just delete *exactly* what we're ask to, and that's it. + return $text + } +} + +# targets_to_xfail is a list of target triplets to be xfailed. +# ldtests contains test-items with 3 items followed by 1 lists, 2 items +# and 3 optional items: +# 0:name +# 1:ld options +# 2:assembler options +# 3:filenames of source files +# 4:name of output file +# 5:expected output +# 6:compiler flags (optional) +# 7:language (optional) +# 8:linker warning (optional) + +proc run_ld_link_exec_tests { targets_to_xfail ldtests } { + global ld + global as + global srcdir + global subdir + global env + global CC + global CXX + global CFLAGS + global CXXFLAGS + global errcnt + global exec_output + + foreach testitem $ldtests { + foreach target $targets_to_xfail { + setup_xfail $target + } + set testname [lindex $testitem 0] + set ld_options [lindex $testitem 1] + set as_options [lindex $testitem 2] + set src_files [lindex $testitem 3] + set binfile tmpdir/[lindex $testitem 4] + set expfile [lindex $testitem 5] + set cflags [lindex $testitem 6] + set lang [lindex $testitem 7] + set warning [lindex $testitem 8] + set objfiles {} + set failed 0 + +# verbose -log "Testname is $testname" +# verbose -log "ld_options is $ld_options" +# verbose -log "as_options is $as_options" +# verbose -log "src_files is $src_files" +# verbose -log "actions is $actions" +# verbose -log "binfile is $binfile" + + # Assemble each file in the test. + foreach src_file $src_files { + set objfile "tmpdir/[file rootname $src_file].o" + lappend objfiles $objfile + + # We ignore warnings since some compilers may generate + # incorrect section attributes and the assembler will warn + # them. + 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 ] } { + set link_proc ld_simple_link + set link_cmd $CC + } elseif { [ string match "c++" $lang ] } { + set link_proc ld_simple_link + set link_cmd $CXX + } elseif { [ string match "-shared" $ld_options ] \ + || [ string match "-pie" $ld_options ] } { + set link_proc ld_simple_link + set link_cmd $CC + } else { + set link_proc ld_link + set link_cmd $ld + } + + if ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] { + set failed 1 + } else { + set failed 0 + } + + # Check if exec_output is expected. + if { $warning != "" } then { + verbose -log "returned with: <$exec_output>, expected: <$warning>" + if { [regexp $warning $exec_output] } then { + set failed 0 + } else { + set failed 1 + } + } + + if { $failed == 0 } { + send_log "Running: $binfile > $binfile.out\n" + verbose "Running: $binfile > $binfile.out" + catch "exec $binfile > $binfile.out" exec_output + + if ![string match "" $exec_output] then { + send_log "$exec_output\n" + verbose "$exec_output" 1 + set failed 1 + } else { + send_log "diff $binfile.out $srcdir/$subdir/$expfile\n" + verbose "diff $binfile.out $srcdir/$subdir/$expfile" + catch "exec diff $binfile.out $srcdir/$subdir/$expfile" exec_output + set exec_output [prune_warnings $exec_output] + + if ![string match "" $exec_output] then { + send_log "$exec_output\n" + verbose "$exec_output" 1 + set failed 1 + } + } + } + + if { $failed != 0 } { + fail $testname + } else { + set errcnt 0 + pass $testname + } + } + } +} + +# List contains test-items with 3 items followed by 2 lists, one item and +# one optional item: +# 0:name +# 1:ld or ar options +# 2:compile options +# 3:filenames of source files +# 4:action and options. +# 5:name of output file +# 6:language (optional) +# +# Actions: +# objdump: Apply objdump options on result. Compare with regex (last arg). +# nm: Apply nm options on result. Compare with regex (last arg). +# readelf: Apply readelf options on result. Compare with regex (last arg). +# +proc run_cc_link_tests { ldtests } { + global nm + global objdump + global READELF + global srcdir + global subdir + global env + global CC + global CXX + global CFLAGS + global CXXFLAGS + global ar + + foreach testitem $ldtests { + set testname [lindex $testitem 0] + set ldflags [lindex $testitem 1] + set cflags [lindex $testitem 2] + set src_files [lindex $testitem 3] + set actions [lindex $testitem 4] + set binfile tmpdir/[lindex $testitem 5] + set lang [lindex $testitem 6] + set objfiles {} + set is_unresolved 0 + set failed 0 + + # Compile each file in the test. + foreach src_file $src_files { + set objfile "tmpdir/[file rootname $src_file].o" + lappend objfiles $objfile + + # We ignore warnings since some compilers may generate + # incorrect section attributes and the assembler will warn + # them. + 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. + reset_vars + + if { [ string match "c++" $lang ] } { + set cc_cmd $CXX + } else { + set cc_cmd $CC + } + + if { [regexp ".*\\.a$" $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] + + # There are actions where we run regexp_diff on the + # output, and there are other actions (presumably). + # Handling of the former look the same. + set dump_prog "" + switch -- $action { + objdump + { set dump_prog $objdump } + nm + { set dump_prog $nm } + readelf + { set dump_prog $READELF } + default + { + perror "Unrecognized action $action" + set is_unresolved 1 + break + } + } + + if { $dump_prog != "" } { + set dumpfile [lindex $actionlist 2] + set binary $dump_prog + + # Ensure consistent sorting of symbols + if {[info exists env(LC_ALL)]} { + set old_lc_all $env(LC_ALL) + } + set env(LC_ALL) "C" + set cmd "$binary $progopts $binfile > dump.out" + send_log "$cmd\n" + catch "exec $cmd" comp_output + 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" + set failed 1 + break + } + + if { [regexp_diff "dump.out" "$srcdir/$subdir/$dumpfile"] } then { + verbose "output is [file_contents "dump.out"]" 2 + set failed 1 + break + } + } + } + + if { $failed != 0 } { + fail $testname + } else { if { $is_unresolved == 0 } { + pass $testname + } } + } + + # Catch action errors. + if { $is_unresolved != 0 } { + unresolved $testname + continue + } + } +} + +# 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 arc-*-*] + || [istarget d30v-*-*] + || [istarget dlx-*-*] + || [istarget i960-*-*] + || [istarget or32-*-*] + || [istarget pj*-*-*] + || [istarget alpha-*-*] + || [istarget hppa64-*-*] + || [istarget i370-*-*] + || [istarget i860-*-*] + || [istarget ia64-*-*] + || [istarget mep-*-*] + || [istarget mn10200-*-*] + || [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 +} + +# Returns true if the target ld supports the plugin API. +proc check_plugin_api_available { } { + global plugin_api_available_saved + global ld + if {![info exists plugin_api_available_saved]} { + # Check if the ld used by gcc supports --plugin. + set ld_output [remote_exec host $ld "--help"] + if { [ string first "-plugin" $ld_output ] >= 0 } { + set plugin_api_available_saved 1 + } else { + set plugin_api_available_saved 0 + } + } + return $plugin_api_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] +} |