X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Ftestsuite%2Flib%2Fld-lib.exp;h=a481ce72199eda0ed670d11e37b1599bf21169d4;hb=241e64e3b42cd9eba514b8e0ad2ef39a337f10a5;hp=65a5ffb116a351630fb5493f84d865ce89500ab4;hpb=a747059210fbec5946a62431e8774190059d901d;p=deliverable%2Fbinutils-gdb.git

diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp
index 65a5ffb116..2e7d368ce9 100644
--- a/ld/testsuite/lib/ld-lib.exp
+++ b/ld/testsuite/lib/ld-lib.exp
@@ -1,6 +1,5 @@
 # Support routines for LD testsuite.
-#   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-#    2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
+#   Copyright (C) 1994-2018 Free Software Foundation, Inc.
 #
 # This file is part of the GNU Binutils.
 #
@@ -19,6 +18,47 @@
 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
 # MA 02110-1301, USA.
 
+proc load_common_lib { name } {
+    global srcdir
+    load_file $srcdir/../../binutils/testsuite/lib/$name
+}
+
+load_common_lib binutils-common.exp
+
+# Returns 1 if the gcc for the target is at least version MAJOR.MINOR
+# Returns 0 otherwise.
+#
+proc at_least_gcc_version { major minor } {
+    global CC
+
+    if {![info exists CC]} {
+	set CC [find_gcc]
+    }
+    if { $CC == "" } {
+	return 0
+    }
+    set state [remote_exec host $CC --version]
+    if { [lindex $state 0] != 0 } {
+	return 0;
+    }
+    set tmp "[lindex $state 1]\n"
+    # Look for (eg) 4.6.1 in the version output.
+    set ver_re "\[^\\.0-9\]+(\[1-9\]\[0-9\]*)\\.(\[0-9\]+)(?:\\.\[0-9\]+)?"
+    regexp $ver_re $tmp fred maj min
+    verbose "gcc version: $tmp"
+    if { ![info exists maj] || ![info exists min] } then {
+	perror "can't decipher gcc version number, fix the framework!"
+	return 0
+    }
+    verbose "major gcc version is $maj, want at least $major"
+    if { $maj == $major } then {
+	verbose "minor gcc version is $min, want at least $minor"
+	return [expr $min >= $minor]
+    } else {
+	return [expr $maj > $major]
+    }
+}
+
 # Extract and print the version number of ld.
 #
 proc default_ld_version { ld } {
@@ -43,14 +83,51 @@ proc default_ld_version { ld } {
 
 proc run_host_cmd { prog command } {
     global link_output
+    global gcc_B_opt
+    global ld_L_opt
+    global gcc_ld_B_opt_tested
+    global ld
 
     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"]
+    # If we are compiling with gcc, we want to add gcc_B_opt and
+    # ld_L_opt to flags.  However, if $prog already has -B options,
+    # which might be the case when running gcc out of a build
+    # directory, we want our -B options to come first.
+    set gccexe $prog
+    set gccparm [string first " " $gccexe]
+    set gccflags ""
+    if { $gccparm > 0 } then {
+	set gccflags [string range $gccexe $gccparm end]
+	set gccexe [string range $gccexe 0 $gccparm]
+	set prog $gccexe
+    }
+    set gccexe [string replace $gccexe 0 [string last "/" $gccexe] ""]
+    if {[string match "*cc*" $gccexe] || [string match "*++*" $gccexe]} then {
+	set gccflags "$gcc_B_opt $gccflags $ld_L_opt"
+	if {![info exists gcc_ld_B_opt_tested]} {
+	    set gcc_ld_B_opt_tested 1
+	    set ld_version_message [run_host_cmd "$ld" "--version"]
+	    set gcc_ld_version_message [run_host_cmd "$prog" "$gccflags -Wl,--version"]
+	    if {[string first $ld_version_message $gcc_ld_version_message] < 0} {
+		perror "************************************************************************"
+		perror "Your compiler driver ignores -B when choosing ld."
+		perror "You will not be testing the new ld in many of the following tests."
+		set gcc_ld_version [run_host_cmd "$prog" "$gccflags --print-prog-name=ld"]
+		if {![string match "" $gcc_ld_version] && ![string match "ld" $gcc_ld_version]} {
+		
+		    perror "It seems you will be testing $gcc_ld_version instead."
+		}
+		perror "************************************************************************"
+	    }
+	}
+    }
+
+    verbose -log "$prog $gccflags $command"
+    set status [remote_exec host [concat sh -c [list "$prog $gccflags $command 2>&1"]] "" "/dev/null" "ld.tmp"]
     remote_upload host "ld.tmp"
     set link_output [file_contents "ld.tmp"]
     regsub "\n$" $link_output "" link_output
@@ -70,8 +147,12 @@ proc run_host_cmd { prog command } {
 
 proc run_host_cmd_yesno { prog command } {
     global exec_output
+    global errcnt warncnt
 
     set exec_output [prune_warnings [run_host_cmd "$prog" "$command"]]
+    # Ignore error and warning.
+    set errcnt 0
+    set warncnt 0
     if [string match "" $exec_output] then {
 	return 1;
     }
@@ -136,59 +217,18 @@ proc big_or_little_endian {} {
     return $flags
 }
 
-# Link a program using ld.
+# 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
 
+    set flags ""
     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]
-    if { $ldparm > 0 } then {
-	set ldexe [string range $ld 0 $ldparm]
-    }
-    set ldexe [string replace $ldexe 0 [string last "/" $ldexe] ""]
-    if {[string match "*gcc*" $ldexe] || [string match "*++*" $ldexe]} then {
-	set flags "$gcc_ld_flag $flags"
     }
 
     remote_file host delete $target
-
     set exec_output [run_host_cmd "$ld" "$flags -o $target $objects"]
     set exec_output [prune_warnings $exec_output]
 
@@ -196,11 +236,7 @@ proc default_ld_simple_link { ld target objects } {
     # 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
-    }
+    return [string match "" $exec_output]
 }
 
 # Compile an object using cc.
@@ -211,7 +247,7 @@ proc default_ld_compile { cc source object } {
     global srcdir
     global subdir
     global host_triplet
-    global gcc_gas_flag
+    global gcc_B_opt
 
     set cc_prog $cc
     if {[llength $cc_prog] > 1} then {
@@ -225,11 +261,12 @@ proc default_ld_compile { cc source object } {
     remote_file build delete "$object"
     remote_file host delete "$object"
 
-    set flags "-I$srcdir/$subdir"
+    set flags "$gcc_B_opt -I$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.
+    # If we are compiling with gcc, we want to add gcc_B_opt to flags.
+    # However, if $prog already has -B options, which might be the
+    # case when running gcc out of a build directory, we want our -B
+    # options to come first.
     set ccexe $cc
     set ccparm [string first " " $cc]
     set ccflags ""
@@ -238,29 +275,36 @@ proc default_ld_compile { cc source object } {
 	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"
-    }
 
+    set ccexe [string replace $ccexe 0 [string last "/" $ccexe] ""]
     if {[string match "*++*" $ccexe]} {
-	set flags "$flags $CXXFLAGS"
+	append flags " $CXXFLAGS"
     } else {
-	set flags "$flags $CFLAGS"
+	append flags " $CFLAGS"
+    }
+
+    if [board_info [target_info name] exists cflags] {
+        append flags " [board_info [target_info name] 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 $object"
+    set cmd "$cc $flags $ccflags -c $source -o $object"
+    verbose -log "$cmd"
 
-    set status [remote_exec host [concat sh -c [list "$cc $flags $ccflags -c $source -o $object 2>&1"]] "" "/dev/null" "ld.tmp"]
+    set status [remote_exec host [concat sh -c [list "$cmd 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]
+    # Versions of gcc up to and including pre-release gcc-7, at least on
+    # some targets, generate .section directives with incorrect type.
+    # Ignore warnings from the assembler about this.
+    regsub -all "(^|\n)\[^\n\]*: ignoring incorrect section type \[^\n\]*" $exec_output "" exec_output
+    regsub -all "^\[^\n\]*: Assembler messages:\n" $exec_output "" exec_output
     if [string match "" $exec_output] then {
 	if {![file exists $object]} then {
 	    regexp ".*/(\[^/\]*)$" $source all dobj
@@ -284,14 +328,16 @@ proc default_ld_compile { cc source object } {
 
 # Assemble a file.
 #
-proc default_ld_assemble { as source object } {
+proc default_ld_assemble { as in_flags source object } {
     global ASFLAGS
     global host_triplet
+    global srcdir
+    global subdir
 
     if ![info exists ASFLAGS] { set ASFLAGS "" }
 
-    set flags [big_or_little_endian]
-    set exec_output [run_host_cmd "$as" "$flags $ASFLAGS -o $object $source"]
+    set flags "[big_or_little_endian] -I$srcdir/$subdir"
+    set exec_output [run_host_cmd "$as" "$flags $in_flags $ASFLAGS -o $object $source"]
     set exec_output [prune_warnings $exec_output]
     if [string match "" $exec_output] then {
 	return 1
@@ -354,18 +400,20 @@ proc default_ld_nm { nm nmflags object } {
 
 # Define various symbols needed when not linking against all
 # target libs.
-proc ld_simple_link_defsyms {} {
+proc ld_link_defsyms {} {
 
     set flags "--defsym __stack_chk_fail=0"
 
     # ARM targets call __gccmain
-    if {[istarget arm*-*-*]       || \
-        [istarget strongarm*-*-*] || \
-        [istarget xscale*-*-*]    || \
-        [istarget thumb-*-*] } {
+    if {[istarget arm*-*-*]} {
         append flags " --defsym __gccmain=0"
     }
 
+    # Windows targets need __main, some prefixed with underscore.
+    if {[istarget *-*-cygwin* ] || [istarget *-*-mingw*]} {
+        append flags " --defsym __main=0 --defsym ___main=0"
+    }
+
     # PowerPC EABI code calls __eabi.
     if {[istarget powerpc*-*-eabi*] || [istarget powerpc*-*-rtems*]} {
 	append flags " --defsym __eabi=0"
@@ -377,7 +425,7 @@ proc ld_simple_link_defsyms {} {
     }
 
     # m6811/m6812 code has references to soft registers.
-    if {[istarget m6811-*-*] || [istarget m6812-*-*]} {
+    if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {
 	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"
@@ -393,180 +441,7 @@ proc ld_simple_link_defsyms {} {
     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 hppa*64*-*-hpux*] \
-	 && ![istarget *-*-linux*] \
-	 && ![istarget frv-*-uclinux*] \
-	 && ![istarget bfin-*-uclinux] \
-	 && ![istarget *-*-irix5*] \
-	 && ![istarget *-*-irix6*] \
-	 && ![istarget *-*-netbsd*] \
-	 && ![istarget *-*-solaris2*] } {
-	return 0
-    }
-
-    if { [istarget *-*-linux*aout*] \
-	 || [istarget *-*-linux*oldld*] } {
-	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
-    }
-    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 *-*-*\[ab\]out*] \
-	     || [istarget *-*-linux*oldld*] \
-	     || [istarget *-*-msdos*] \
-	     || [istarget arm-*-netbsd] \
-	     || [istarget i?86-*-netbsd] \
-	     || [istarget i?86-*-mach*] \
-	     || [istarget i?86-*-vsta] \
-	     || [istarget pdp11-*-*] \
-	     || [istarget m68*-ericsson-ose] \
-	     || [istarget m68k-hp-bsd*] \
-	     || [istarget m68*-*-hpux*] \
-	     || [istarget m68*-*-netbsd] \
-	     || [istarget m68*-*-netbsd*4k*] \
-	     || [istarget m68k-sony-*] \
-	     || [istarget m68*-sun-sunos\[34\]*] \
-	     || [istarget m68*-wrs-vxworks*] \
-	     || [istarget ns32k-*-*] \
-	     || [istarget sparc*-*-netbsd] \
-	     || [istarget sparc-sun-sunos4*] \
-	     || [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
+# run_dump_test FILE (optional:) EXTRA_OPTIONS
 # Copied from gas testsuite, tweaked and further extended.
 #
 # Assemble a .s file, then run some utility on it and check the output.
@@ -591,6 +466,12 @@ proc simple_diff { file_1 file_2 } {
 # list ends with the first line that doesn't match the above syntax
 # (hmm, not great for error detection).
 #
+# The optional EXTRA_OPTIONS argument to `run_dump_test' is a list of
+# two-element lists.  The first element of each is an option name, and
+# the second additional arguments to be added on to the end of the
+# option list as given in FILE.d.  (If omitted, no additional options
+# are added.)
+#
 # The interesting options are:
 #
 #   name: TEST-NAME
@@ -610,6 +491,11 @@ proc simple_diff { file_1 file_2 } {
 #   ld_after_inputfiles: FLAGS
 #       Similar to "ld", but put after all input files.
 #
+#   objcopy_objects: FLAGS
+#	Run objcopy with the specified flags after assembling any source
+#	that has the special marker RUN_OBJCOPY in the source specific
+#	flags.
+#
 #   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
@@ -622,6 +508,7 @@ proc simple_diff { file_1 file_2 } {
 #       run_dump_test will guess which program to run by seeing which of
 #       the flags options below is present.
 #
+#   readelf: FLAGS
 #   objdump: FLAGS
 #   nm: FLAGS
 #   objcopy: FLAGS
@@ -638,41 +525,94 @@ proc simple_diff { file_1 file_2 } {
 #       More than one "source" directive can be given, which is useful
 #       when testing linking.
 #
+#   dump: DUMP
+#	Match against DUMP.d.  If omitted, this defaults to FILE.d.  This
+#	is useful if several .d files differ by options only.  Options are
+#	always read from FILE.d.
+#
 #   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.
+#	Only run the test for TARGET.
+#	You may provide target name "cfi" for any target supporting the
+#	CFI statements.  You may provide target name "shared" for any
+#	target supporting shared libraries.  Otherwise TARGET is called
+#	as a TCL procedure if surrounded by square brackets, or passed
+#	to "istarget" if not.
+#	This may occur more than once; the target being tested must match
+#	at least one.  Otherwise the test will be marked unsupported.
+#
+#   alltargets: TARGET
+#	Only run the test for TARGET.
+#	The syntax for TARGET is as with 'target'.
+#	This may occur more than once; the target being tested must match
+#	all of them.  Otherwise the test will be marked unsupported.
 #
 #   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.
+#	Do not run the test for TARGET.
+#	The syntax for TARGET is as with 'target'.
+#	This may occur more than once; the target being tested must not
+#	match any of them.  Otherwise the test will be marked unsupported.
+#
+#   skip: TARGET
+#   anyskip: TARGET
+#   noskip: TARGET
+#	These are exactly the same as "notarget", "alltargets" and
+#	"target" respectively, except that they do nothing at all if the
+#	check fails.  They should only be used in groups, to construct a
+#	single test which is run on all targets but with variant options
+#	or expected output on some targets.  (For example, see
+#	gas/arm/inst.d and gas/arm/wince_inst.d.)
 #
 #   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.
+#	to pass.  The PROG, readelf, objdump, nm and objcopy options have
+#	no meaning and need not be supplied if this is present.  Multiple
+#	"error" directives append to the expected linker error message.
+#
+#   error_output: FILE
+#       Means the same as 'error', except the regular expression lines
+#       are contains in FILE.
 #
 #   warning: REGEX
 #	Expect a linker warning matching REGEX.  It is an error to issue
-#	both "error" and "warning".
+#	both "error" and "warning".  Multiple "warning" directives
+#	append to the expected linker warning message.
+#
+#   warning_output: FILE
+#       Means the same as 'warning', except the regular expression
+#       lines are contains in FILE.
+#
+#   map: FILE
+#       Adding this option will cause the linker to generate a linker
+#       map file, using the -Map=MAPFILE command line option.  If
+#       there is no -Map=MAPFILE in the 'ld: FLAGS' then one will be
+#       added to the linker command line.  The contents of the
+#       generated MAPFILE are then compared against the regexp lines
+#       in FILE using `regexp_diff' (see below for details).
 #
 # 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.
+# regexps in FILE.d.  `regexp_diff' is defined in binutils-common.exp;
+# see further comments there.
 #
-proc run_dump_test { name } {
+proc run_dump_test { name {extra_options {}} } {
     global subdir srcdir
     global OBJDUMP NM AS OBJCOPY READELF LD
     global OBJDUMPFLAGS NMFLAGS ASFLAGS OBJCOPYFLAGS READELFFLAGS LDFLAGS
     global host_triplet runtests
     global env verbose
+    global ld_elf_shared_opt
+
+    if { [is_elf_format] && [check_shared_lib_support] } {
+	set ld_extra_opt "$ld_elf_shared_opt"
+    } else {
+	set ld_extra_opt ""
+    }
 
     if [string match "*/*" $name] {
 	set file $name
@@ -694,12 +634,17 @@ proc run_dump_test { name } {
     set dumpfile tmpdir/dump.out
     set run_ld 0
     set run_objcopy 0
+    set objfile_names {}
     set opts(as) {}
     set opts(ld) {}
     set opts(ld_after_inputfiles) {}
     set opts(xfail) {}
     set opts(target) {}
+    set opts(alltargets) {}
     set opts(notarget) {}
+    set opts(skip) {}
+    set opts(anyskip) {}
+    set opts(noskip) {}
     set opts(objdump) {}
     set opts(nm) {}
     set opts(objcopy) {}
@@ -707,10 +652,14 @@ proc run_dump_test { name } {
     set opts(name) {}
     set opts(PROG) {}
     set opts(source) {}
+    set opts(dump) {}
     set opts(error) {}
     set opts(warning) {}
+    set opts(error_output) {}
+    set opts(warning_output) {}
     set opts(objcopy_linked_file) {}
-    set asflags(${file}.s) {}
+    set opts(objcopy_objects) {}
+    set opts(map) {}
 
     foreach i $opt_array {
 	set opt_name [lindex $i 0]
@@ -724,16 +673,38 @@ proc run_dump_test { name } {
 	switch -- $opt_name {
 	    xfail {}
 	    target {}
+	    alltargets {}
 	    notarget {}
+	    skip {}
+	    anyskip {}
+	    noskip {}
+	    warning {}
+	    error {}
 	    source {
-		# Move any source-specific as-flags to a separate array to
+		# Move any source-specific as-flags to a separate list to
 		# simplify processing.
 		if { [llength $opt_val] > 1 } {
-		    set asflags([lindex $opt_val 0]) [lrange $opt_val 1 end]
+		    lappend asflags [lrange $opt_val 1 end]
 		    set opt_val [lindex $opt_val 0]
 		} else {
-		    set asflags($opt_val) {}
+		    lappend asflags {}
 		}
+
+                # Create the object file name based on nothing but the source
+                # file name.
+                set new_objfile \
+                    [concat tmpdir/[file rootname [file tail [lindex $opt_val 0]]].o]
+                # But, sometimes, we have the exact same source filename in
+                # different directories (foo/src.s bar/src.s) which would lead
+                # us to try and create two src.o files.  We detect this
+                # conflict here, and instead create src.o and src1.o.
+                set j 0
+                while { [lsearch $objfile_names $new_objfile] != -1 } {
+                    incr j
+                    set new_objfile \
+                        [concat tmpdir/[file rootname [file tail  [lindex $opt_val 0]]]${j}.o]
+                }
+		lappend objfile_names $new_objfile
 	    }
 	    default {
 		if [string length $opts($opt_name)] {
@@ -755,28 +726,93 @@ 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]
+
+	# Append differently whether it's a message (without space) or
+	# an option or list (with space).
+	switch -- $opt_name {
+	    warning -
+	    error {
+		append opts($opt_name) $opt_val
+	    }
+	    default {
+		set opts($opt_name) [concat $opts($opt_name) $opt_val]
+	    }
+	}
+    }
+
+    foreach i $extra_options {
+	set opt_name [lindex $i 0]
+	set opt_val [lindex $i 1]
+	if ![info exists opts($opt_name)] {
+	    perror "unknown option $opt_name given in extra_opts"
+	    unresolved $subdir/$name
+	    return
+	}
+	# Add extra option to end of existing option, adding space
+	# if necessary.
+	if { ![regexp "warning|error" $opt_name]
+	     && [string length $opts($opt_name)] } {
+	    append opts($opt_name) " "
+	}
+	append opts($opt_name) $opt_val
     }
+
     foreach opt { as ld } {
 	regsub {\[big_or_little_endian\]} $opts($opt) \
 	    [big_or_little_endian] opts($opt)
     }
 
+    if { $opts(name) == "" } {
+	set testname "$subdir/$name"
+    } else {
+	set testname $opts(name)
+    }
+
     # Decide early whether we should run the test for this target.
+    if { [llength $opts(noskip)] > 0 } {
+	set targmatch 0
+	foreach targ $opts(noskip) {
+	    if [match_target $targ] {
+		set targmatch 1
+		break
+	    }
+	}
+	if { $targmatch == 0 } {
+	    return
+	}
+    }
+    foreach targ $opts(anyskip) {
+	if ![match_target $targ] {
+	    return
+	}
+    }
+    foreach targ $opts(skip) {
+	if [match_target $targ] {
+	    return
+	}
+    }
     if { [llength $opts(target)] > 0 } {
 	set targmatch 0
 	foreach targ $opts(target) {
-	    if [istarget $targ] {
+	    if [match_target $targ] {
 		set targmatch 1
 		break
 	    }
 	}
 	if { $targmatch == 0 } {
+	    unsupported $testname
+	    return
+	}
+    }
+    foreach targ $opts(alltargets) {
+	if ![match_target $targ] {
+	    unsupported $testname
 	    return
 	}
     }
     foreach targ $opts(notarget) {
-	if [istarget $targ] {
+	if [match_target $targ] {
+	    unsupported $testname
 	    return
 	}
     }
@@ -784,7 +820,7 @@ proc run_dump_test { name } {
     set program ""
     # It's meaningless to require an output-testing method when we
     # expect an error.
-    if { $opts(error) == "" } {
+    if { $opts(error) == "" && $opts(error_output) == "" } {
 	if {$opts(PROG) != ""} {
 	    switch -- $opts(PROG) {
 		objdump	{ set program objdump }
@@ -793,7 +829,7 @@ proc run_dump_test { name } {
 		readelf	{ set program readelf }
 		default
 		{ perror "unrecognized program option $opts(PROG) in $file.d"
-		  unresolved $subdir/$name
+		  unresolved $testname
 		  return }
 	    }
 	} else {
@@ -802,7 +838,7 @@ proc run_dump_test { name } {
 		if {$opts($p) != ""} {
 		    if {$program != ""} {
 			perror "ambiguous dump program in $file.d"
-			unresolved $subdir/$name
+			unresolved $testname
 			return
 		    } else {
 			set program $p
@@ -810,21 +846,22 @@ proc run_dump_test { name } {
 		}
 	    }
 	}
-	if { $program == "" && $opts(warning) == "" } {
+	if { $program == "" \
+                 && $opts(map) == "" \
+                 && $opts(warning) == "" \
+                 && $opts(warning_output) == "" \
+                 && $opts(error) == "" \
+                 && $opts(error_output) == "" } {
 	    perror "dump program unspecified in $file.d"
-	    unresolved $subdir/$name
+	    unresolved $testname
 	    return
 	}
     }
 
-    if { $opts(name) == "" } {
-	set testname "$subdir/$name"
-    } else {
-	set testname $opts(name)
-    }
-
     if { $opts(source) == "" } {
 	set sourcefiles [list ${file}.s]
+	set asflags [list ""]
+	set objfile_names [list tmpdir/[file tail ${file}].o]
     } else {
 	set sourcefiles {}
 	foreach sf $opts(source) {
@@ -833,11 +870,15 @@ proc run_dump_test { name } {
 	    } else {
 		lappend sourcefiles "$srcdir/$subdir/$sf"
 	    }
-	    # Must have asflags indexed on source name.
-	    set asflags($srcdir/$subdir/$sf) $asflags($sf)
 	}
     }
 
+    if { $opts(dump) == "" } {
+	set dfile ${file}.d
+    } else {
+	set dfile $srcdir/$subdir/$opts(dump)
+    }
+
     # Time to setup xfailures.
     foreach targ $opts(xfail) {
 	setup_xfail $targ
@@ -847,11 +888,18 @@ proc run_dump_test { name } {
     set objfiles {}
     for { set i 0 } { $i < [llength $sourcefiles] } { incr i } {
 	set sourcefile [lindex $sourcefiles $i]
+	set sourceasflags [lindex $asflags $i]
+	set run_objcopy_objects 0
+
+	if { [string match "*RUN_OBJCOPY*" $sourceasflags] } {
+	    set run_objcopy_objects 1
+	}
+	regsub "RUN_OBJCOPY" $sourceasflags "" sourceasflags
 
-	set objfile "tmpdir/dump$i.o"
+	set objfile [lindex $objfile_names $i]
 	catch "exec rm -f $objfile" exec_output
 	lappend objfiles $objfile
-	set cmd "$AS $ASFLAGS $opts(as) $asflags($sourcefile) -o $objfile $sourcefile"
+	set cmd "$AS $ASFLAGS $opts(as) $sourceasflags -o $objfile $sourcefile"
 
 	send_log "$cmd\n"
 	set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
@@ -861,7 +909,7 @@ proc run_dump_test { name } {
 	remote_file build delete "ld.tmp"
 
 	if { [lindex $cmdret 0] != 0 || ![string match "" $comp_output] } then {
-	    send_log "$comp_output\n"
+	    send_log -- "$comp_output\n"
 	    verbose "$comp_output" 3
 
 	    set exitstat "succeeded"
@@ -870,15 +918,71 @@ proc run_dump_test { name } {
 	    fail $testname
 	    return
 	}
-    }
 
-    set expmsg $opts(error)
-    if { $opts(warning) != "" } {
-	if { $expmsg != "" } {
-	    perror "$testname: mixing error and warning test-directives"
-	    return
+	if { $run_objcopy_objects } {
+	    set cmd "$OBJCOPY $opts(objcopy_objects) $objfile"
+
+	    send_log "$cmd\n"
+	    set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] \
+			"" "/dev/null" "objcopy.tmp"]
+	    remote_upload host "objcopy.tmp"
+	    set comp_output [prune_warnings [file_contents "objcopy.tmp"]]
+	    remote_file host delete "objcopy.tmp"
+	    remote_file build delete "objcopy.tmp"
+
+	    if { [lindex $cmdret 0] != 0 \
+		  || ![string match "" $comp_output] } {
+		send_log -- "$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 $opts(warning)
+    }
+
+    if { (($opts(warning) != "") && ($opts(error) != "")) \
+	 || (($opts(warning) != "") && ($opts(error_output) != "")) \
+	 || (($opts(warning) != "") && ($opts(warning_output) != "")) \
+	 || (($opts(error) != "") && ($opts(warning_output) != "")) \
+	 || (($opts(error) != "") && ($opts(error_output) != "")) \
+	 || (($opts(warning_output) != "") && ($opts(error_output) != "")) } {
+	perror "$testname: bad mix of warning, error, warning_output, and error_output test-directives"
+	unresolved $testname
+	return
+    }
+
+    set check_ld(source) ""
+    set check_ld(terminal) 0
+    if { $opts(error) != "" \
+         || $opts(warning) != "" \
+         || $opts(error_output) != "" \
+         || $opts(warning_output) != "" } {
+
+        if { $opts(error) != "" || $opts(error_output) != "" } {
+            set check_ld(terminal) 1
+        } else {
+            set check_ld(terminal) 0
+        }
+
+        if { $opts(error) != "" || $opts(warning) != "" } {
+            set check_ld(source) "regex"
+            if { $opts(error) != "" } {
+                set check_ld(regex) $opts(error)
+            } else {
+                set check_ld(regex) $opts(warning)
+            }
+        } else {
+            set check_ld(source) "file"
+            if { $opts(error_output) != "" } {
+                set check_ld(file) $opts(error_output)
+            } else {
+                set check_ld(file) $opts(warning_output)
+            }
+        }
     }
 
     # Perhaps link the file(s).
@@ -888,9 +992,23 @@ 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/$subdir \
+	set cmd "$LD $ld_extra_opt $LDFLAGS -L$srcdir/$subdir \
 		   $opts(ld) -o $objfile $objfiles $opts(ld_after_inputfiles)"
 
+        # If needed then check for, or add a -Map option.
+        set mapfile ""
+        if { $opts(map) != "" } then {
+            if { [regexp -- "-Map=(\[^ \]+)" $cmd all mapfile] } then {
+                # Found existing mapfile option
+                verbose -log "Existing mapfile '$mapfile' found"
+            } else {
+                # No mapfile option.
+                set mapfile "tmpdir/dump.map"
+                verbose -log "Adding mapfile '$mapfile'"
+                set cmd "$cmd -Map=$mapfile"
+            }
+        }
+
 	send_log "$cmd\n"
 	set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]] "" "/dev/null" "ld.tmp"]
 	remote_upload host "ld.tmp"
@@ -918,28 +1036,55 @@ proc run_dump_test { name } {
 	}
 
 	regsub "\n$" $comp_output "" comp_output
-	if { $cmdret != 0 || $comp_output != "" || $expmsg != "" } then {
+	if { $cmdret != 0 || $comp_output != "" || $check_ld(source) != "" } then {
 	    set exitstat "succeeded"
 	    if { $cmdret != 0 } { set exitstat "failed" }
-	    verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
-	    send_log "$comp_output\n"
+
+            if { $check_ld(source) == "regex" } {
+                verbose -log "$exitstat with: <$comp_output>, expected: <$check_ld(regex)>"
+            } elseif { $check_ld(source) == "file" } {
+                verbose -log "$exitstat with: <$comp_output>, expected in file $check_ld(file)"
+                set_file_contents "tmpdir/ld.messages" "$comp_output"
+            } else {
+                verbose -log "$exitstat with: <$comp_output>, no expected output"
+            }
+	    send_log -- "$comp_output\n"
 	    verbose "$comp_output" 3
 
-	    if { [regexp $expmsg $comp_output] \
-		    && (($cmdret == 0) == ($opts(warning) != "")) } {
-		# We have the expected output from ld.
-		if { $opts(error) != "" || $program == "" } {
+	    if { (($check_ld(source) == "") == ($comp_output == "")) \
+                 && (($cmdret == 0) == ($check_ld(terminal) == 0)) \
+                 && ((($check_ld(source) == "regex") \
+                      && ($check_ld(regex) == "") == ($comp_output == "") \
+                      && [regexp -- $check_ld(regex) $comp_output]) \
+                     || (($check_ld(source) == "file") \
+                         && (![regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$check_ld(file)"]))) } {
+                # We have the expected output from ld.
+		if { $check_ld(terminal) || $program == "" } {
 		    pass $testname
 		    return
 		}
 	    } else {
-		verbose -log "$exitstat with: <$comp_output>, expected: <$expmsg>"
 		fail $testname
 		return
 	    }
 	}
+
+        if { $opts(map) != "" } then {
+            # Check the map file matches.
+            set map_pattern_file $srcdir/$subdir/$opts(map)
+            verbose -log "Compare '$mapfile' against '$map_pattern_file'"
+            if { [regexp_diff $mapfile $map_pattern_file] } then {
+                fail "$testname (map file check)"
+            } else {
+                pass "$testname (map file check)"
+            }
+
+            if { $program == "" } then {
+                return
+            }
+        }
     } else {
-	set objfile "tmpdir/dump0.o"
+	set objfile [lindex $objfiles 0]
     }
 
     # We must not have expected failure if we get here.
@@ -974,6 +1119,7 @@ proc run_dump_test { name } {
     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"
@@ -983,14 +1129,14 @@ proc run_dump_test { name } {
     } else {
 	unset env(LC_ALL)
     }
-    if ![string match "" $comp_output] then {
-	send_log "$comp_output\n"
+    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 {
+    if { [regexp_diff $dumpfile "${dfile}"] } then {
 	fail $testname
 	if { $verbose == 2 } then { verbose "output is [file_contents $dumpfile]" 2 }
 	return
@@ -1000,6 +1146,10 @@ proc run_dump_test { name } {
 }
 
 proc slurp_options { file } {
+    # If options_regsub(foo) is set to {a b}, then the contents of a
+    # "#foo:" line will have regsub -all applied to replace a with b.
+    global options_regsub
+
     if [catch { set f [open $file r] } x] {
 	#perror "couldn't open `$file': $x"
 	perror "$x"
@@ -1017,6 +1167,11 @@ proc slurp_options { file } {
 	# Whitespace here is space-tab.
 	if [regexp $pat $line xxx opt_name opt_val] {
 	    # match!
+	    if [info exists options_regsub($opt_name)] {
+		set subst $options_regsub($opt_name)
+		regsub -all -- [lindex $subst 0] $opt_val [lindex $subst 1] \
+		    opt_val
+	    }
 	    lappend opt_array [list $opt_name $opt_val]
 	} else {
 	    break
@@ -1026,109 +1181,6 @@ proc slurp_options { file } {
     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
-
-    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 "#..." $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 "^$line_b$" "$line_a"] {
-		send_log "regexp_diff match failure\n"
-		send_log "regexp \"^$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
-    }
-
-    close $file_a
-    close $file_b
-
-    return $differences
-}
-
 proc file_contents { filename } {
     set file [open $filename r]
     set contents [read $file]
@@ -1136,12 +1188,18 @@ proc file_contents { filename } {
     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 $objects"]
+    set exec_output [run_host_cmd "$ar" "-rc $aropts $target $objects"]
     set exec_output [prune_warnings $exec_output]
 
     if [string match "" $exec_output] then {
@@ -1154,16 +1212,29 @@ proc ar_simple_create { ar aropts target objects } {
 
 # 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)
+#  0:name
+#  1:ld/ar leading options, placed before object files
+#  2:ld/ar trailing options, placed after object files
+#  3:assembler options
+#  4:filenames of assembler files
+#  5:list of actions, options and expected outputs.
+#  6:name of output file
+#  7: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).
+# Actions: { command command-line-options file-containg-expected-output-regexps }
+# Commands:
+#   objdump: Apply objdump options on result.
+#   nm: Apply nm options on result.
+#   readelf: Apply readelf options on result.
+#   ld: Don't apply anything on result.  Compare output during linking with
+#     the file containing regexps (which is the second arg, not the third).
+#     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 } {
+# args is an optional list of target triplets to be xfailed.
+#
+proc run_ld_link_tests { ldtests args } {
     global ld
     global as
     global nm
@@ -1176,6 +1247,14 @@ proc run_ld_link_tests { ldtests } {
     global CC
     global CFLAGS
     global runtests
+    global exec_output
+    global ld_elf_shared_opt
+
+    if { [is_elf_format] && [check_shared_lib_support] } {
+	set ld_extra_opt "$ld_elf_shared_opt"
+    } else {
+	set ld_extra_opt ""
+    }
 
     foreach testitem $ldtests {
 	set testname [lindex $testitem 0]
@@ -1184,18 +1263,26 @@ proc run_ld_link_tests { ldtests } {
 	    continue
 	}
 
+	foreach target $args {
+	    setup_xfail $target
+	}
+
 	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 ld_after [lindex $testitem 2]
+	set as_options [lindex $testitem 3]
+	set src_files  [lindex $testitem 4]
+	set actions [lindex $testitem 5]
+	set binfile tmpdir/[lindex $testitem 6]
+	set cflags [lindex $testitem 7]
 	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 "ld_after is $ld_after"
 #	verbose -log "as_options is $as_options"
 #	verbose -log "src_files is $src_files"
 #	verbose -log "actions is $actions"
@@ -1203,11 +1290,12 @@ proc run_ld_link_tests { ldtests } {
 
 	# Assemble each file in the test.
 	foreach src_file $src_files {
-	    set objfile "tmpdir/[file rootname $src_file].o"
+	    set fileroot "[file rootname [file tail $src_file]]"
+	    set objfile "tmpdir/$fileroot.o"
 	    lappend objfiles $objfile
 
 	    if { [file extension $src_file] == ".c" } {
-		set as_file "tmpdir/[file rootname $src_file].s"
+		set as_file "tmpdir/$fileroot.s"
 		if ![ld_compile "$CC -S $CFLAGS $cflags" $srcdir/$subdir/$src_file $as_file] {
 		    set is_unresolved 1
 		    break
@@ -1222,26 +1310,23 @@ proc run_ld_link_tests { ldtests } {
 	}
 
 	# Catch assembler errors.
-	if { $is_unresolved != 0 } {
+	if { $is_unresolved } {
 	    unresolved $testname
 	    continue
 	}
 
-	if { [regexp ".*\\.a$" $binfile] } {
-	    if { ![ar_simple_create $ar $ld_options $binfile "$objfiles"] } {
-		fail $testname
+	if { $binfile eq "tmpdir/" } {
+	    # compile only
+	} elseif { [regexp ".*\\.a$" $binfile] } {
+	    if { ![ar_simple_create $ar $ld_options $binfile "$objfiles $ld_after"] } {
 		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
+	} elseif { ![ld_link $ld $binfile "$ld_extra_opt -L$srcdir/$subdir $ld_options $objfiles $ld_after"] } {
+	    set maybe_failed 1
+	    set ld_output "$exec_output"
 	}
 
-	if { $failed == 0 } {
+	if { !$failed } {
 	    foreach actionlist $actions {
 		set action [lindex $actionlist 0]
 		set progopts [lindex $actionlist 1]
@@ -1257,6 +1342,8 @@ proc run_ld_link_tests { ldtests } {
 		        { set dump_prog $nm }
 		    readelf
 		        { set dump_prog $READELF }
+		    ld
+		        { set dump_prog "ld" }
 		    default
 			{
 			    perror "Unrecognized action $action"
@@ -1265,7 +1352,18 @@ proc run_ld_link_tests { ldtests } {
 			}
 		    }
 
-		if { $dump_prog != "" } {
+		if { $action == "ld" } {
+		    set regexpfile $progopts
+		    verbose "regexpfile is $srcdir/$subdir/$regexpfile"
+		    set_file_contents "tmpdir/ld.messages" "$ld_output"
+		    verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
+		    if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$regexpfile"] } then {
+			verbose "output is $ld_output" 2
+			set failed 1
+			break
+		    }
+		    set maybe_failed 0
+		} elseif { !$maybe_failed && $dump_prog != "" } {
 		    set dumpfile [lindex $actionlist 2]
 		    set binary $dump_prog
 
@@ -1281,7 +1379,7 @@ proc run_ld_link_tests { ldtests } {
     		    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 {
@@ -1307,18 +1405,14 @@ proc run_ld_link_tests { ldtests } {
 		    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 } {
+	if { $is_unresolved } {
 	    unresolved $testname
-	    continue
+	} elseif { $maybe_failed || $failed } {
+	    fail $testname
+	} else {
+	    pass $testname
 	}
     }
 }
@@ -1346,11 +1440,10 @@ if ![string length [info proc prune_warnings]] {
     }
 }
 
-# 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
+#   1:ld leading options, placed before object files
 #   2:assembler options
 #   3:filenames of source files
 #   4:name of output file
@@ -1358,8 +1451,10 @@ if ![string length [info proc prune_warnings]] {
 #   6:compiler flags (optional)
 #   7:language (optional)
 #   8:linker warning (optional)
+#   9:ld trailing options, placed after object files (optional)
+# args is an optional list of target triplets to be xfailed.
 
-proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
+proc run_ld_link_exec_tests { ldtests args } {
     global ld
     global as
     global srcdir
@@ -1371,9 +1466,21 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
     global CXXFLAGS
     global errcnt
     global exec_output
+    global board_cflags
+    global STATIC_LDFLAGS
+
+    # When using GCC as the linker driver, we need to specify board cflags when
+    # linking because cflags may contain linker options.  For example when
+    # linker options are included in GCC spec files then we need the -specs
+    # option.
+    if [board_info [target_info name] exists cflags] {
+        set board_cflags " [board_info [target_info name] cflags]"
+    } else {
+	set board_cflags ""
+    }
 
     foreach testitem $ldtests {
-	foreach target $targets_to_xfail {
+	foreach target $args {
 	    setup_xfail $target
 	}
 	set testname [lindex $testitem 0]
@@ -1385,6 +1492,7 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
 	set cflags [lindex $testitem 6]
 	set lang [lindex $testitem 7]
 	set warning [lindex $testitem 8]
+	set ld_after [lindex $testitem 9]
 	set objfiles {}
 	set failed 0
 
@@ -1392,84 +1500,95 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
 #	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"
+	    set fileroot "[file rootname [file tail $src_file]]"
+	    set objfile "tmpdir/$fileroot.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 $objfile
+		set cmd "$CXX -c $CXXFLAGS $cflags"
 	    } else {
-		ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
+		set cmd "$CC -c $CFLAGS $cflags"
 	    }
-
-	    # 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 ![ld_compile $cmd $srcdir/$subdir/$src_file $objfile] {
+		set failed 1
+		break
 	    }
+	}
+	if { $failed != 0 } {
+	    unresolved $testname
+	    continue
+	}
+
+	if { [ string match "asm" $lang ] } {
+	    set link_proc ld_link
+	    set link_cmd $ld
+	} elseif { [ string match "c++" $lang ] } {
+	    set link_proc ld_link
+	    set link_cmd $CXX
+	} else {
+	    set link_proc ld_link
+	    set link_cmd $CC
+	}
 
-	    if ![$link_proc $link_cmd $binfile "-L$srcdir/$subdir $ld_options $objfiles"] {
+	if { $binfile eq "tmpdir/" } {
+	    # compile only
+	    pass $testname
+	    continue;
+	} else {
+	    if { [string match "" $STATIC_LDFLAGS] \
+		 && [regexp -- ".* \[-\]+static .*" " $board_cflags $ld_options $objfiles $ld_after "] } {
+		untested $testname
+		continue
+	    }
+	    if ![$link_proc $link_cmd $binfile "$board_cflags -L$srcdir/$subdir $ld_options $objfiles $ld_after"] {
 		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
-		}
+	# 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 && [isnative] } {
+	    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 { $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
-	    }
+	if { $failed != 0 } {
+	    fail $testname
+	} elseif ![isnative] {
+	    unsupported $testname
+	} else {
+	    set errcnt 0
+	    pass $testname
 	}
     }
 }
@@ -1488,6 +1607,10 @@ proc run_ld_link_exec_tests { targets_to_xfail ldtests } {
 # 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).
+# warning: Check linker output against regex (last arg).
+# error: Like 'warning' but checking output in error case.
+# warning_output: Check linker output against regex in a file (last arg).
+# error_output: Like 'warning_output' but checking output in error case.
 #
 proc run_cc_link_tests { ldtests } {
     global nm
@@ -1501,6 +1624,15 @@ proc run_cc_link_tests { ldtests } {
     global CFLAGS
     global CXXFLAGS
     global ar
+    global exec_output
+    global board_cflags
+    global STATIC_LDFLAGS
+
+    if [board_info [target_info name] exists cflags] {
+        set board_cflags " [board_info [target_info name] cflags]"
+    } else {
+	set board_cflags ""
+    }
 
     foreach testitem $ldtests {
 	set testname [lindex $testitem 0]
@@ -1513,21 +1645,68 @@ proc run_cc_link_tests { ldtests } {
 	set objfiles {}
 	set is_unresolved 0
 	set failed 0
+	set check_ld(terminal) 0
+	set check_ld(source) ""
+
+	#verbose -log "testname  is $testname"
+	#verbose -log "ldflags   is $ldflags"
+	#verbose -log "cflags    is $cflags"
+	#verbose -log "src_files is $src_files"
+	#verbose -log "actions   is $actions"
+	#verbose -log "binfile   is $binfile"
+	#verbose -log "lang      is $lang"
+
+	foreach actionlist $actions {
+	    set action [lindex $actionlist 0]
+	    set progopts [lindex $actionlist 1]
+
+	    # Find actions related to error/warning processing.
+	    switch -- $action {
+	        error
+	        {
+	            set check_ld(source) "regexp"
+	            set check_ld(regexp) $progopts
+	            set check_ld(terminal) 1
+	        }
+	        warning
+	        {
+	            set check_ld(source) "regexp"
+	            set check_ld(regexp) $progopts
+	        }
+	        error_output
+	        {
+	            set check_ld(source) "file"
+	            set check_ld(file) $progopts
+	            set check_ld(terminal) 1
+	        }
+	        warning_output
+	        {
+	            set check_ld(source) "file"
+	            set check_ld(file) $progopts
+	        }
+	    }
+	}
 
 	# Compile each file in the test.
 	foreach src_file $src_files {
-	    set objfile "tmpdir/[file rootname $src_file].o"
+	    set fileroot "[file rootname [file tail $src_file]]"
+	    set objfile "tmpdir/$fileroot.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 $objfile
+		set cmd "$CXX -c $CXXFLAGS $cflags"
 	    } else {
-		ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/$src_file $objfile
+		set cmd "$CC -c $CFLAGS $cflags"
+	    }
+	    if ![ld_compile $cmd $srcdir/$subdir/$src_file $objfile] {
+		set failed 1
+		break
 	    }
 	}
+	if { $failed != 0 } {
+	    unresolved $testname
+	    continue
+	}
 
 	# Clear error and warning counts.
 	reset_vars
@@ -1538,18 +1717,48 @@ proc run_cc_link_tests { ldtests } {
 	    set cc_cmd $CC
 	}
 
-	if { [regexp ".*\\.a$" $binfile] } {
+	if { $binfile eq "tmpdir/" } {
+	    # compile only
+	} elseif { [regexp ".*\\.a$" $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 { [string match "" $STATIC_LDFLAGS] \
+		 && [regexp -- ".* \[-\]+static .*" " $board_cflags $ldflags $objfiles "] } {
+		untested $testname
+		continue
+	    }
+	    ld_link $cc_cmd $binfile "$board_cflags -L$srcdir/$subdir $ldflags $objfiles"
+	    set ld_output "$exec_output"
+
+	    if { $check_ld(source) == "regexp" } then {
+		# Match output against regexp argument.
+		verbose -log "returned with: <$ld_output>, expected: <$check_ld(regexp)>"
+		if { ![regexp $check_ld(regexp) $ld_output] } then {
+		    set failed 1
+		}
+	    } elseif { $check_ld(source) == "file" } then {
+		# Match output against patterns in a file.
+		set_file_contents "tmpdir/ld.messages" "$ld_output"
+		verbose "ld.messages has '[file_contents tmpdir/ld.messages]'"
+		if { [regexp_diff "tmpdir/ld.messages" "$srcdir/$subdir/$check_ld(file)"] } then {
+		    verbose "output is $ld_output" 2
+		    set failed 1
+		}
+	    }
+
+	    if { $check_ld(source) != "" } then {
+                if { $ld_output == "" } then {
+                    verbose -log "Linker was expected to give error or warning"
+                    set failed 1
+                }
+	    } else {
+                if { $ld_output != "" } then {
+                    verbose -log "Unexpected linker warning or error"
+                    set failed 1
+                }
+	    }
 	}
 
 	if { $failed == 0 } {
@@ -1568,6 +1777,10 @@ proc run_cc_link_tests { ldtests } {
 		        { set dump_prog $nm }
 		    readelf
 		        { set dump_prog $READELF }
+		    error {}
+		    warning {}
+		    error_output {}
+		    warning_output {}
 		    default
 			{
 			    perror "Unrecognized action $action"
@@ -1608,18 +1821,14 @@ proc run_cc_link_tests { ldtests } {
 		    }
 		}
 	    }
-
-	    if { $failed != 0 } {
-		fail $testname
-	    } else { if { $is_unresolved == 0 } {
-		pass $testname
-	    } }
 	}
 
-	# Catch action errors.
-	if { $is_unresolved != 0 } {
+	if { $failed } {
+	    fail $testname
+	} elseif { $is_unresolved } {
 	    unresolved $testname
-	    continue
+	} else {
+	    pass $testname
 	}
     }
 }
@@ -1629,15 +1838,20 @@ proc run_cc_link_tests { ldtests } {
 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*] } {
+	if {   [istarget alpha-*-*]
+	    || [istarget d30v-*-*]
+	    || [istarget dlx-*-*]
+	    || [istarget hppa*64-*-*]
+	    || [istarget ia64-*-*]
+	    || [istarget mep-*-*]
+	    || [istarget mn10200-*-*]
+	    || [istarget pj*-*-*]
+	    || [istarget pru*-*-*]
+	    || [istarget xgate-*-*] } {
 	    set gc_sections_available_saved 0
 	    return 0
 	}
@@ -1651,6 +1865,8 @@ proc check_gc_sections_available { } {
 	}
 
 	# Check if the ld used by gcc supports --gc-sections.
+	# FIXME: this test is useless since ld --help always says
+	# --gc-sections is available
 	set ld_output [remote_exec host $ld "--help"]
 	if { [ string first "--gc-sections" $ld_output ] >= 0 } {
 	    set gc_sections_available_saved 1
@@ -1661,6 +1877,247 @@ proc check_gc_sections_available { } {
     return $gc_sections_available_saved
 }
 
+# Returns true if -shared is supported on the target
+
+proc check_shared_lib_support { } {
+    global shared_available_saved
+    global ld
+
+    if {![info exists shared_available_saved]} {
+	set ld_output [remote_exec host $ld "-shared"]
+	if { [ string first "not supported" $ld_output ] >= 0 } {
+	    set shared_available_saved 0
+	} else {
+	    set shared_available_saved 1
+	}
+    }
+    return $shared_available_saved
+}
+
+# Return true if target uses genelf.em (assuming it is ELF).
+proc is_generic_elf { } {
+    if { [istarget "d30v-*-*"]
+	 || [istarget "dlx-*-*"]
+	 || [istarget "fr30-*-*"]
+	 || ([istarget "frv-*-*"] && ![istarget "frv-*-linux*"])
+	 || [istarget "ft32-*-*"]
+	 || [istarget "iq2000-*-*"]
+	 || [istarget "mn10200-*-*"]
+	 || [istarget "moxie-*-*"]
+	 || [istarget "msp430-*-*"]
+	 || [istarget "mt-*-*"]
+	 || [istarget "pj*-*-*"]
+	 || [istarget "xgate-*-*"] } {
+	return 1;
+    }
+    return 0;
+}
+
+proc is_underscore_target { } {
+    global is_underscore_target_saved
+    global target_triplet
+    global srcdir
+
+    if { ![info exists is_underscore_target_saved] } {
+	set cmd "targ=$target_triplet . $srcdir/../../bfd/config.bfd &&"
+	append cmd { echo "$targ_underscore"}
+	verbose -log "$cmd"
+	set status [catch {exec sh -c $cmd} result]
+	if { $status == 0 && [string match "yes" $result] } {
+	    set is_underscore_target_saved 1
+	} else {
+	    set is_underscore_target_saved 0
+	}
+    }
+    return $is_underscore_target_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 PLUGIN" $ld_output ] >= 0 } {
+	    set plugin_api_available_saved 1
+	} else {
+	    set plugin_api_available_saved 0
+	}
+    }
+    return $plugin_api_available_saved
+}
+
+# Sets ld_sysroot to the current sysroot (empty if not supported) and
+# returns true if the target ld supports sysroot.
+proc check_sysroot_available { } {
+    global ld_sysroot_available_saved ld ld_sysroot
+    if {![info exists ld_sysroot_available_saved]} {
+	# Check if ld supports --sysroot *other* than empty.
+	set ld_sysroot [string trimright [lindex [remote_exec host $ld "--print-sysroot"] 1]]
+	if { $ld_sysroot == "" } {
+	    set ld_sysroot_available_saved 0
+	} else {
+	    set ld_sysroot_available_saved 1
+	}
+    }
+    return $ld_sysroot_available_saved
+}
+
+# Returns 1 if plugin is enabled in gcc.  Returns 0 otherwise.
+proc check_gcc_plugin_enabled { } {
+    global CC
+
+    if {![info exists CC]} {
+	set CC [find_gcc]
+    }
+    if { $CC == ""} {
+	return 0
+    }
+    set state [remote_exec host $CC -v]
+    if { [lindex $state 0] != 0 } {
+	return 0;
+    }
+    for { set i 1 } { $i < [llength $state] } { incr i } {
+	set v [lindex $state $i]
+	if { [ string match "*--disable-plugin*" $v ] } {
+	    verbose "plugin is disabled by $v"
+	    return 0;
+	}
+    }
+
+    return 1;
+}
+
+# Returns true if the target compiler supports LTO
+proc check_lto_available { } {
+    global lto_available_saved
+    global CC
+
+    if {![info exists lto_available_saved]} {
+        if { ![check_gcc_plugin_enabled] } {
+	    set lto_available_saved 0
+	    return 0
+	}
+	# This test will hide LTO bugs in ld.  Since GCC 4.9 adds
+	# -ffat-lto-objects, we always run LTO tests on Linux with
+	# GCC 4.9 or newer.
+	if { [istarget "*-*-linux*"] && [at_least_gcc_version 4 9] } {
+	    set lto_available_saved 1
+	    return 1
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/lto[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	puts $f "int main() { return 0; }"
+	close $f
+	if [is_remote host] {
+	    set src [remote_download host $src]
+	}
+	set lto_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -fuse-linker-plugin $src -o $output"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $lto_available_saved
+}
+
+# Returns true if the target compiler supports LTO  -ffat-lto-objects
+proc check_lto_fat_available { } {
+    global lto_fat_available_saved
+    global CC
+
+    if {![info exists lto_fat_available_saved]} {
+        if { ![check_gcc_plugin_enabled] } {
+	    set lto_fat_available_saved 0
+	    return 0
+	}
+	# This test will hide LTO bugs in ld.  Since GCC 4.9 adds
+	# -ffat-lto-objects, we always run LTO tests on Linux with
+	# GCC 4.9 or newer.
+	if { [istarget "*-*-linux*"] && [at_least_gcc_version 4 9] } {
+	    set lto_fat_available_saved 1
+	    return 1
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/lto[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	puts $f "int main() { return 0; }"
+	close $f
+	if [is_remote host] {
+	    set src [remote_download host $src]
+	}
+	set lto_fat_available_saved [run_host_cmd_yesno "$CC" "$flags -flto -ffat-lto-objects -fuse-linker-plugin $src -o $output"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $lto_fat_available_saved
+}
+
+# Returns true if the target compiler supports LTO and -shared
+proc check_lto_shared_available { } {
+    global lto_shared_available_saved
+    global CC
+
+    if {![info exists lto_shared_available_saved]} {
+        if { ![check_gcc_plugin_enabled] } {
+	    set lto_shared_available_saved 0
+	    return 0
+	}
+	# This test will hide LTO bugs in ld.  Since GCC 4.9 adds
+	# -ffat-lto-objects, we always run LTO tests on Linux with
+	# GCC 4.9 or newer.
+	if { [istarget "*-*-linux*"] && [at_least_gcc_version 4 9] } {
+	    set lto_shared_available_saved 1
+	    return 1
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin -shared
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/lto_shared[pid]"
+	set src ${basename}.c
+	set output ${basename}.so
+	set f [open $src "w"]
+	puts $f ""
+	close $f
+	if [is_remote host] {
+	    set src [remote_download host $src]
+	}
+	set lto_shared_available_saved [run_host_cmd_yesno "$CC" "$flags -shared -fPIC -flto -fuse-linker-plugin $src -o $output"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $lto_shared_available_saved
+}
+
 # Check if the assembler supports CFI statements.
 
 proc check_as_cfi { } {
@@ -1687,6 +2144,102 @@ proc check_as_cfi { } {
     return $success
 }
 
+# Returns true if IFUNC works.
+
+proc check_ifunc_available { } {
+    global ifunc_available_saved
+    global CC
+
+    if {![info exists ifunc_available_saved]} {
+        if { [which $CC] == 0 } {
+	    set ifunc_available_saved 0
+	    return 0
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/ifunc[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	puts $f "extern int library_func2 (void);"
+	puts $f "int main (void)"
+	puts $f "{"
+	puts $f "  if (library_func2 () != 2) __builtin_abort ();"
+	puts $f "  return 0; "
+	puts $f "}"
+	puts $f "static int library_func1 (void) {return 2; }"
+	puts $f "void *foo (void) __asm__ (\"library_func2\");"
+	puts $f "void *foo (void) { return library_func1; }"
+	puts $f "__asm__(\".type library_func2, %gnu_indirect_function\");"
+	close $f
+	if [is_remote host] {
+	    set src [remote_download host $src]
+	}
+	set ifunc_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
+	if { [isnative] && $ifunc_available_saved == 1 } {
+	  set ifunc_available_saved [run_host_cmd_yesno "$output" ""]
+	}
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $ifunc_available_saved
+}
+
+# Returns true if ifunc attribute works.
+
+proc check_ifunc_attribute_available { } {
+    global ifunc_attribute_available_saved
+    global CC
+
+    if {![info exists ifunc_attribute_available_saved]} {
+        if { [which $CC] == 0 } {
+	    set ifunc_attribute_available_saved 0
+	    return 0
+	}
+	# Check if gcc supports -flto -fuse-linker-plugin
+	set flags ""
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/ifunc[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	puts $f "extern int library_func2 (void) __attribute__ ((ifunc (\"foo\")));"
+	puts $f "int main (void)"
+	puts $f "{"
+	puts $f "  if (library_func2 () != 2) __builtin_abort ();"
+	puts $f "  return 0; "
+	puts $f "}"
+	puts $f "static int library_func1 (void) {return 2; }"
+	puts $f "void *foo (void) { return library_func1; }"
+	close $f
+	if [is_remote host] {
+	    set src [remote_download host $src]
+	}
+	set ifunc_attribute_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
+	if { [isnative] && $ifunc_attribute_available_saved == 1 } {
+	  set ifunc_attribute_available_saved [run_host_cmd_yesno "$output" ""]
+	}
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $ifunc_attribute_available_saved
+}
+
 # Provide virtual target "cfi" for targets supporting CFI.
 
 rename "istarget" "istarget_ld"
@@ -1694,5 +2247,107 @@ proc istarget { target } {
     if {$target == "cfi"} {
 	return [check_as_cfi]
     }
+    if {$target == "shared"} {
+	return [check_shared_lib_support]
+    }
     return [istarget_ld $target]
 }
+
+# Return true if libdl is supported.
+
+proc check_libdl_available { } {
+    global libdl_available_saved
+    global CC
+
+    if {![info exists libdl_available_saved]} {
+        if { [which $CC] == 0 } {
+	    set libdl_available_saved 0
+	    return 0
+	}
+
+	set basename "tmpdir/dl_avail_test[pid]"
+	set src ${basename}.c
+	set output ${basename}.out
+	set f [open $src "w"]
+	# Sample test file.
+	puts $f "#include <dlfcn.h>"
+	puts $f "int main (void)"
+	puts $f "{"
+	puts $f "  dlopen (\"dummy.so\", RTLD_NOW);"
+	puts $f "  return 0; "
+	puts $f "}"
+	close $f
+	if [is_remote host] {
+	    set src [remote_download host $src]
+	}
+	set libdl_available_saved [run_host_cmd_yesno "$CC" "$src -o $output -ldl"]
+	remote_file host delete $src
+	remote_file host delete $output
+	file delete $src
+    }
+    return $libdl_available_saved
+}
+
+# Returns true if GNU2 TLS works.
+
+proc check_gnu2_tls_available { } {
+    global gnu2_tls_available_saved
+    global CC
+    global GNU2_CFLAGS
+
+    if {![info exists gnu2_tls_available_saved]} {
+        if { [which $CC] == 0 || "$GNU2_CFLAGS" == "" } {
+	    set gnu2_tls_available_saved 0
+	    return 0
+	}
+	# Check if GNU2 TLS works.
+	set flags "$GNU2_CFLAGS"
+	if [board_info [target_info name] exists cflags] {
+	    append flags " [board_info [target_info name] cflags]"
+	}
+	if [board_info [target_info name] exists ldflags] {
+	    append flags " [board_info [target_info name] ldflags]"
+	}
+
+	set basename "tmpdir/gnu2_tls[pid]"
+	set src1 ${basename}1.c
+	set output1 ${basename}.so
+	set f [open $src1 "w"]
+	puts $f "extern __thread int zzz;"
+	puts $f "int foo (void)"
+	puts $f "{"
+	puts $f "  return zzz;"
+	puts $f "}"
+	close $f
+	if [is_remote host] {
+	    set src1 [remote_download host $src1]
+	}
+	set src2 ${basename}2.c
+	set output2 ${basename}.exe
+	set f [open $src2 "w"]
+	puts $f "__thread int zzz = 20;"
+	puts $f "extern int foo (void);"
+	puts $f "int main (void)"
+	puts $f "{"
+	puts $f "  if (foo () != 20) __builtin_abort ();"
+	puts $f "  return 0; "
+	puts $f "}"
+	close $f
+	if [is_remote host] {
+	    set src2 [remote_download host $src2]
+	}
+	set gnu2_tls_available_saved [run_host_cmd_yesno "$CC" "-fPIC -shared $flags $src1 -o $output1"]
+	if { $gnu2_tls_available_saved == 1 } {
+	    set gnu2_tls_available_saved [run_host_cmd_yesno "$CC" "$flags $src2 $output1 -o $output2"]
+	    if { $gnu2_tls_available_saved == 1 } {
+		set gnu2_tls_available_saved [run_host_cmd_yesno "$output2" ""]
+	    }
+	}
+	remote_file host delete $src1
+	remote_file host delete $output1
+	remote_file host delete $src2
+	remote_file host delete $output2
+	file delete $src1 $src2
+    }
+    return $gnu2_tls_available_saved
+}