Use is_pecoff_format in ld testsuite

[Alan Modra]

--image-base 0 is not just for x86_64 mingw.  This patch fixes that,
and a case where a changed LDFLAGS leaked out of one script to the next.

	* testsuite/ld-scripts/align.exp: Use is_pecoff_format.
	* testsuite/ld-scripts/defined.exp: Likewise.
	* testsuite/ld-scripts/provide.exp: Likewise.
	* testsuite/ld-scripts/weak.exp: Likewise.
	* testsuite/ld-scripts/empty-address.exp: Likewise.  Reset LDFLAGS
	on exit.
	* testsuite/ld-scripts/expr.exp: Set LDFLAGS earlier, and with
	--image-base for PE.
	* testsuite/ld-scripts/include.exp: Set LDFLAGS for PE.
	* testsuite/ld-scripts/script.exp: Use is_pecoff_format, and
	set LDFLAGS as well as flags.

diff --git a/ld/testsuite/ld-scripts/align.exp b/ld/testsuite/ld-scripts/align.exp
index 1520fa333d..3817251730 100644
--- a/ld/testsuite/ld-scripts/align.exp
+++ b/ld/testsuite/ld-scripts/align.exp
@@ -31,10 +31,10 @@ if ![ld_assemble $as $srcdir/$subdir/align.s tmpdir/align.o] {
     return
 }
 
-# mingw on x86_64 targets need to set the image base to 0 to avoid auto image-basing.
+# Avoid auto image-basing.
 set saved_LDFLAGS "$LDFLAGS"
-if [istarget "x86_64-*-mingw*"] then {
-  set LDFLAGS "$LDFLAGS --image-base 0"
+if { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 if ![ld_link $ld tmpdir/align "$LDFLAGS -T $srcdir/$subdir/align.t tmpdir/align.o"] {
diff --git a/ld/testsuite/ld-scripts/defined.exp b/ld/testsuite/ld-scripts/defined.exp
index 6889f04c16..7a47030c70 100644
--- a/ld/testsuite/ld-scripts/defined.exp
+++ b/ld/testsuite/ld-scripts/defined.exp
@@ -28,8 +28,8 @@ if ![ld_assemble $as $srcdir/$subdir/defined.s tmpdir/def.o] {
 }
 
 set saved_LDFLAGS "$LDFLAGS"
-if [istarget "x86_64-*-mingw*"] then {
-  set LDFLAGS "$LDFLAGS --image-base 0"
+if { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 if { ![ld_link $ld tmpdir/def "$LDFLAGS -T $srcdir/$subdir/defined.t tmpdir/def.o"] } {
diff --git a/ld/testsuite/ld-scripts/empty-address.exp b/ld/testsuite/ld-scripts/empty-address.exp
index a505e57c78..d71202a303 100644
--- a/ld/testsuite/ld-scripts/empty-address.exp
+++ b/ld/testsuite/ld-scripts/empty-address.exp
@@ -19,8 +19,9 @@
 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
 # MA 02110-1301, USA.
 
-if [istarget "x86_64-*-mingw*"] then {
-  set LDFLAGS "$LDFLAGS --image-base 0"
+set old_LDFLAGS $LDFLAGS
+if { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 run_dump_test empty-address-1
@@ -29,3 +30,5 @@ run_dump_test empty-address-2b
 run_dump_test empty-address-3a
 run_dump_test empty-address-3b
 run_dump_test empty-address-3c
+
+set LDFLAGS $old_LDFLAGS
diff --git a/ld/testsuite/ld-scripts/expr.exp b/ld/testsuite/ld-scripts/expr.exp
index 08bf0ab2eb..7b1c62751d 100644
--- a/ld/testsuite/ld-scripts/expr.exp
+++ b/ld/testsuite/ld-scripts/expr.exp
@@ -19,17 +19,20 @@
 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
 # MA 02110-1301, USA.
 
+set old_LDFLAGS $LDFLAGS
+if { [istarget spu*-*-*] } then {
+    set LDFLAGS "$LDFLAGS --no-overlays --local-store 0:0"
+} elseif { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
+}
+
 run_dump_test expr1
 run_dump_test expr2
 run_dump_test sane1
 run_dump_test assign-loc
 run_dump_test pr14962
 run_dump_test pr14962-2
+run_dump_test pr18963
 run_dump_test pr22267
 
-set old_ldflags $LDFLAGS
-if { [istarget spu*-*-*] } {
-    set LDFLAGS "$LDFLAGS --no-overlays --local-store 0:0"
-}
-run_dump_test pr18963
-set LDFLAGS $old_ldflags
+set LDFLAGS $old_LDFLAGS
diff --git a/ld/testsuite/ld-scripts/include.exp b/ld/testsuite/ld-scripts/include.exp
index d74f30e6d7..c7e2ee58a0 100644
--- a/ld/testsuite/ld-scripts/include.exp
+++ b/ld/testsuite/ld-scripts/include.exp
@@ -23,8 +23,10 @@ if [is_aout_format] {
 }
 
 set old_ldflags $LDFLAGS
-if { [istarget spu*-*-*] } {
+if { [istarget spu*-*-*] } then {
     set LDFLAGS "$LDFLAGS --local-store 0:0 --no-overlays"
+} elseif { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 set test_list [lsort [glob -nocomplain $srcdir/$subdir/include*.d]]
diff --git a/ld/testsuite/ld-scripts/provide.exp b/ld/testsuite/ld-scripts/provide.exp
index a4aee5205b..34aed400a1 100644
--- a/ld/testsuite/ld-scripts/provide.exp
+++ b/ld/testsuite/ld-scripts/provide.exp
@@ -31,8 +31,8 @@ if {[istarget "powerpc*-*-aix*"] || [istarget "rs6000-*-aix*"] || [is_aout_forma
 }
 
 set saved_LDFLAGS "$LDFLAGS"
-if [istarget "x86_64-*-mingw*"] then {
-  set LDFLAGS "$LDFLAGS --image-base 0"
+if { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 set test_list [lsort [glob -nocomplain $srcdir/$subdir/provide-*.d]]
diff --git a/ld/testsuite/ld-scripts/script.exp b/ld/testsuite/ld-scripts/script.exp
index 42bd452d6a..108e53989f 100644
--- a/ld/testsuite/ld-scripts/script.exp
+++ b/ld/testsuite/ld-scripts/script.exp
@@ -183,13 +183,10 @@ proc extract_symbol_test { testfile testname } {
 
 # PE targets need to set the image base to 0 to avoid complications from nm.
 set flags ""
-if {[istarget "*-*-pe*"] \
-    || [istarget "*-*-cygwin*"] \
-    || [istarget "*-*-mingw*"] \
-    || [istarget "*-*-winnt*"] \
-    || [istarget "*-*-nt"] \
-    || [istarget "*-*-interix*"] } then {
-  set flags "--image-base 0"
+set old_LDFLAGS $LDFLAGS
+if { [is_pecoff_format] } then {
+    set flags "--image-base 0"
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 if ![ld_link $ld tmpdir/script "$flags -T $srcdir/$subdir/script.t tmpdir/script.o"] {
@@ -235,3 +232,5 @@ run_dump_test "pr20302"
 run_dump_test "segment-start" {{name (default)}}
 run_dump_test "segment-start" {{name (overridden)} \
 			       {ld -Ttext-segment=0x10000000}}
+
+set LDFLAGS $old_LDFLAGS
diff --git a/ld/testsuite/ld-scripts/weak.exp b/ld/testsuite/ld-scripts/weak.exp
index b0ca4ab66e..57986a31d4 100644
--- a/ld/testsuite/ld-scripts/weak.exp
+++ b/ld/testsuite/ld-scripts/weak.exp
@@ -44,8 +44,8 @@ if {! [ld_assemble $as $srcdir/$subdir/weak1.s tmpdir/weak1.o]
 }
 
 set saved_LDFLAGS "$LDFLAGS"
-if [istarget "x86_64-*-mingw*"] then {
-  set LDFLAGS "$LDFLAGS --image-base 0"
+if { [is_pecoff_format] } then {
+    set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
 set weak_regexp_big \

-- 
Alan Modra
Australia Development Lab, IBM