ld-dynamic test fixes

* testsuite/ld-dynamic/export-dynamic-symbol-2.d: Match output for
	mips-sgi-irix6.
	* testsuite/ld-dynamic/export-dynamic-symbol-glob.d: Likewise.
	* testsuite/ld-dynamic/export-dynamic-symbol-list-2.d: Likewise.
	* testsuite/ld-dynamic/export-dynamic-symbol-list-glob.d: Likewise.
	* testsuite/ld-dynamic/export-dynamic-symbol.exp: Exclude targets
	with poor PIE support.

ld/ChangeLog

@@ -1,3 +1,13 @@
+2020-06-04  Alan Modra  <amodra@gmail.com>
+
+	* testsuite/ld-dynamic/export-dynamic-symbol-2.d: Match output for
+	mips-sgi-irix6.
+	* testsuite/ld-dynamic/export-dynamic-symbol-glob.d: Likewise.
+	* testsuite/ld-dynamic/export-dynamic-symbol-list-2.d: Likewise.
+	* testsuite/ld-dynamic/export-dynamic-symbol-list-glob.d: Likewise.
+	* testsuite/ld-dynamic/export-dynamic-symbol.exp: Exclude targets
+	with poor PIE support.
+
 2020-06-04  Alan Modra  <amodra@gmail.com>
 
 	* testsuite/ld-plugin/lto.exp (pr12758.exe): Add NOPIE_LDFLAGS.

ld/testsuite/ld-dynamic/export-dynamic-symbol-2.d

@@ -2,8 +2,11 @@
 #source: export-dynamic-symbol.s
 #ld: -pie -u foo --export-dynamic-symbol foo --export-dynamic-symbol=bar tmpdir/libpr25910.a
 #nm: -D
+# mips-sgi-irix6 makes foo and bar SHN_MIPS_DATA (SHN_LOPROC+2) due to the
+# testcase carelessly leaving them untyped which mips gas turns into
+# STT_OBJECT type.  nm interprets SHN_MIPS_DATA (incorrectly) to be A type.
 
 #...
-[0-9a-f]+ T +bar
-[0-9a-f]+ T +foo
+[0-9a-f]+ [AT] +bar
+[0-9a-f]+ [AT] +foo
 #...

ld/testsuite/ld-dynamic/export-dynamic-symbol-glob.d

@@ -2,7 +2,8 @@
 #source: export-dynamic-symbol.s
 #ld: -pie -u foo --export-dynamic-symbol "f*" tmpdir/libpr25910.a
 #nm: -D
+# See comment in export-dynamic-symbol-2.d for why A is allowed here.
 
 #...
-[0-9a-f]+ T +foo
+[0-9a-f]+ [AT] +foo
 #...

ld/testsuite/ld-dynamic/export-dynamic-symbol-list-2.d

@@ -2,8 +2,9 @@
 #source: export-dynamic-symbol.s
 #ld: -pie -u foo --export-dynamic-symbol-list foo-bar.list tmpdir/libpr25910.a
 #nm: -D
+# See comment in export-dynamic-symbol-2.d for why A is allowed here.
 
 #...
-[0-9a-f]+ T +bar
-[0-9a-f]+ T +foo
+[0-9a-f]+ [AT] +bar
+[0-9a-f]+ [AT] +foo
 #...

ld/testsuite/ld-dynamic/export-dynamic-symbol-list-glob.d

@@ -2,7 +2,8 @@
 #source: export-dynamic-symbol.s
 #ld: -pie -u foo --export-dynamic-symbol-list fstar.list tmpdir/libpr25910.a
 #nm: -D
+# See comment in export-dynamic-symbol-2.d for why A is allowed here.
 
 #...
-[0-9a-f]+ T +foo
+[0-9a-f]+ [AT] +foo
 #...

ld/testsuite/ld-dynamic/export-dynamic-symbol.exp

@@ -23,9 +23,16 @@ if ![is_elf_format] {
     return
 }
 
-# Skip targets where -shared is not supported
+# Skip targets where -shared or -pie is not supported
+if { ![check_shared_lib_support] || ![check_pie_support] } {
+    return
+}
 
-if ![check_shared_lib_support] {
+# Skip targets that have poor PIE support, resulting in failures due to
+# PHDR segment not covered by LOAD segment errors.
+if { ([istarget "bfin-*-*"] && ![istarget "bfin-*-linux*"])
+     || [istarget "mn10300-*-*"]
+     || [istarget "score-*-*"] } {
     return
 }