MIPS/LD/testsuite: Correct dynamic links with VR4100, VR4300 and VR5000

Correct LD test suite failures with VR4100, VR4300 and VR5000 bare metal
MIPS/ELF targets which do not default to linking with shared libraries,
which leads to link failures like:

.../ld/ld-new: cannot find -lcomm-data
FAIL: Common symbol override test

or:

.../ld/ld-new: attempted static link of dynamic object `tmpdir/pr14170.so'
FAIL: PR ld/14170

removing:

FAIL: Build pr22471b.so
FAIL: Build pr22471
FAIL: Build pr22649-2b.so
FAIL: Build pr22649-2d.so
FAIL: Build pr22150
FAIL: PR ld/14170
FAIL: --gc-sections with __gxx_personality

test failures.

	ld/
	* testsuite/ld-elf/comm-data.exp: Pass `-call_shared' to links
	involving a shared library for `mips*vr4100*-*-elf*',
	`mips*vr4300*-*-elf*' and `mips*vr5000*-*-elf*' targets.
	* testsuite/ld-elf/provide-hidden.exp: Likewise.
	* testsuite/ld-elf/shared.exp: Likewise.
	* testsuite/ld-gc/gc.exp: Likewise.
	* testsuite/ld-mips-elf/comm-data.exp: Likewise.

ld/ChangeLog

@@ -1,3 +1,13 @@
+2018-01-31  Maciej W. Rozycki  <macro@mips.com>
+
+	* testsuite/ld-elf/comm-data.exp: Pass `-call_shared' to links
+	involving a shared library for `mips*vr4100*-*-elf*',
+	`mips*vr4300*-*-elf*' and `mips*vr5000*-*-elf*' targets.
+	* testsuite/ld-elf/provide-hidden.exp: Likewise.
+	* testsuite/ld-elf/shared.exp: Likewise.
+	* testsuite/ld-gc/gc.exp: Likewise.
+	* testsuite/ld-mips-elf/comm-data.exp: Likewise.
+
 2018-01-31  Maciej W. Rozycki  <macro@mips.com>
 
 	* testsuite/ld-elf/elf.exp: Move shared library tests over to...

ld/testsuite/ld-elf/comm-data.exp

@@ -41,6 +41,12 @@ set LFLAGS ""
 if [istarget "tic6x-*-*"] {
     append LFLAGS " -melf32_tic6x_le"
 }
+# These targets do not default to linking with shared libraries.
+if { [istarget "mips*vr4100*-*-elf*"] \
+     || [istarget "mips*vr4300*-*-elf*"] \
+     || [istarget "mips*vr5000*-*-elf*"] } {
+    append LFLAGS " -call_shared"
+}
 
 set testname "Common symbol override test"
 

ld/testsuite/ld-elf/provide-hidden.exp

@@ -35,6 +35,12 @@ set AFLAGS_PIC ""
 if [istarget "tic6x-*-*"] {
     append AFLAGS_PIC " -mpic -mpid=near"
 }
+# These targets do not default to linking with shared libraries.
+if { [istarget "mips*vr4100*-*-elf*"] \
+     || [istarget "mips*vr4300*-*-elf*"] \
+     || [istarget "mips*vr5000*-*-elf*"] } {
+    append LFLAGS " -call_shared"
+}
 
 set testname "PROVIDE_HIDDEN test"
 
@@ -77,7 +83,7 @@ run_ld_link_tests [list \
 	"provide-hidden-3"] \
     [list \
 	"$testname 4" \
-	"-T provide-hidden-1.ld" "tmpdir/provide-hidden-s.so" \
+	"$LFLAGS -T provide-hidden-1.ld" "tmpdir/provide-hidden-s.so" \
 	"" \
 	[list provide-hidden-3.s] \
 	[list "readelf -s provide-hidden-dynsec.nd"] \
@@ -93,7 +99,7 @@ run_ld_link_tests [list \
 	"provide-hidden-5"] \
     [list \
 	"$testname 6" \
-	"-T provide-hidden-1.ld" "tmpdir/provide-hidden-s.so" \
+	"$LFLAGS -T provide-hidden-1.ld" "tmpdir/provide-hidden-s.so" \
 	"" \
 	[list provide-hidden-4.s] \
 	[list \
@@ -129,7 +135,7 @@ run_ld_link_tests [list \
 	"provide-hidden-9"] \
     [list \
 	"$testname 10" \
-	"-T provide-hidden-2.ld" "tmpdir/provide-hidden-s.so" \
+	"$LFLAGS -T provide-hidden-2.ld" "tmpdir/provide-hidden-s.so" \
 	"" \
 	[list provide-hidden-3.s] \
 	[list "readelf -s provide-hidden-dynabs.nd"] \
@@ -145,7 +151,7 @@ run_ld_link_tests [list \
 	"provide-hidden-11"] \
     [list \
 	"$testname 12" \
-	"-T provide-hidden-2.ld" "tmpdir/provide-hidden-s.so" \
+	"$LFLAGS -T provide-hidden-2.ld" "tmpdir/provide-hidden-s.so" \
 	"" \
 	[list provide-hidden-4.s] \
 	[list \

ld/testsuite/ld-elf/shared.exp

@@ -57,6 +57,12 @@ set hpux ""
 if [istarget "*-*-hpux*"] {
     set hpux "--defsym HPUX=1"
 }
+# These targets do not default to linking with shared libraries.
+if { [istarget "mips*vr4100*-*-elf*"] \
+     || [istarget "mips*vr4300*-*-elf*"] \
+     || [istarget "mips*vr5000*-*-elf*"] } {
+    append LFLAGS " -call_shared"
+}
 
 if [is_underscore_target] {
     set ASFLAGS "$ASFLAGS --defsym UNDERSCORE=1"
@@ -332,7 +338,8 @@ run_ld_link_tests {
 # bfin does not currently support copy relocs.
 run_ld_link_tests [list \
     [list "PR ld/14170" \
-	"--no-dynamic-linker tmpdir/pr14170a.o tmpdir/pr14170.so" "" $hpux \
+	"$LFLAGS --no-dynamic-linker tmpdir/pr14170a.o tmpdir/pr14170.so" "" \
+	$hpux \
 	 {pr14170c.s} { } "pr14170" ] \
 ] "bfin-*-*"
 
@@ -361,7 +368,7 @@ run_ld_link_tests {
     {"Build shared library for broken linker scrip test"
 	"-shared --hash-style=sysv" "" "" "note-3.s" {} "note-3.so" }
     {"Link using broken linker script"
-	"--script note-3.t tmpdir/note-3.so" "" "" ""
+	"$LFLAGS --script note-3.t tmpdir/note-3.so" "" "" ""
 	{ { ld "note-3.l" } }
 	"a.out" }
 }
@@ -382,7 +389,9 @@ run_ld_link_tests {
 # bfin does not currently support copy relocs.
 run_ld_link_tests {
     {"pr17068 link --as-needed lib in group"
-	"--as-needed --no-dynamic-linker" "--start-group tmpdir/pr17068a.a tmpdir/pr17068.so tmpdir/pr17068b.a --end-group" ""
+	"$LFLAGS --as-needed --no-dynamic-linker"
+	"--start-group tmpdir/pr17068a.a tmpdir/pr17068.so tmpdir/pr17068b.a\
+	 --end-group" ""
 	{start.s pr17068.s} {} "pr17068"}
 } "bfin-*-*"
 
@@ -419,7 +428,7 @@ setup_xfail "hppa*64*-*-hpux*"
 run_ld_link_tests [list \
     [list \
 	"pr20995" \
-	"" "tmpdir/pr20995.so" "$AFLAGS_NONPIC" \
+	"$LFLAGS" "tmpdir/pr20995.so" "$AFLAGS_NONPIC" \
 	{pr20995a.s} {{readelf {-S --wide} pr20995.r}} "pr20995"]]
 
 # xfail on arm*-*-eabi* is particularly because of no support of GNU_RELRO.
@@ -429,7 +438,7 @@ setup_xfail "hppa*64*-*-hpux*"
 run_ld_link_tests [list \
     [list \
 	"pr20995-2" \
-	"" "tmpdir/pr20995-2.so" "$AFLAGS_NONPIC" \
+	"$LFLAGS" "tmpdir/pr20995-2.so" "$AFLAGS_NONPIC" \
 	{pr20995a.s} {{readelf {-S --wide} pr20995.r}} "pr20995-2"]]
 
 setup_xfail "tic6x-*-*"

ld/testsuite/ld-gc/gc.exp

@@ -116,11 +116,18 @@ if { [is_elf_format] && [check_shared_lib_support] } then {
     if { [istarget tic6x-*] } then {
 	set gasopt "-mpic -mpid=near"
     }
+    # These targets do not default to linking with shared libraries.
+    set old_ldflags $LDFLAGS
+    if { [istarget "mips*vr4100*-*-elf*"] \
+	 || [istarget "mips*vr4300*-*-elf*"] \
+	 || [istarget "mips*vr5000*-*-elf*"] } {
+	append LDFLAGS " -call_shared"
+    }
     if {![ld_assemble_flags $as $gasopt $srcdir/$subdir/libpersonality.s tmpdir/libpersonality.o]
 	|| ![ld_link $ld tmpdir/libpersonality.so "-shared tmpdir/libpersonality.o"] } then {
 	fail libpersonality
     } else {
-	run_dump_test "personality"
+	run_dump_test "personality" [list [list ld $LFLAGS]]
     }
     run_dump_test "pr18223"
     if {![ld_assemble_flags $as $gasopt $srcdir/$subdir/pr20022a.s tmpdir/pr20022a.o]
@@ -129,6 +136,7 @@ if { [is_elf_format] && [check_shared_lib_support] } then {
     } else {
 	run_dump_test "pr20022"
     }
+    set LDFLAGS $old_ldflags
 }
 
 if { [is_remote host] || [which $CC] != 0 } {

ld/testsuite/ld-mips-elf/comm-data.exp

@@ -136,7 +136,8 @@ proc mips_comm_data_test { abi flag emul reloc } {
     run_ld_link_tests [list \
 	[list \
 	    "$testname" \
-	    "$LDFLAGS $ZFLAG -T ../ld-elf/comm-data2.ld -Ltmpdir -lmips-$abi-$reloc-comm-data" "" \
+	    "$LDFLAGS -call_shared $ZFLAG -T ../ld-elf/comm-data2.ld -Ltmpdir\
+	     -lmips-$abi-$reloc-comm-data" "" \
 	    "$AFLAGS -call_nonpic" \
 	    { ../ld-elf/comm-data2.s } \
 	    { \