Skip sizeof/startof tests on targets with leading char

Symbol lookup in linker will always fail on targets with leading char
in symbol name since __start_SECNAME and __stop_SECNAME in C may be
___start_SECNAME and ___stop_SECNAME in assembly.

	* testsuite/ld-elf/sizeofa.d: Skip on targets with leading char
	in symbol name.
	* testsuite/ld-elf/sizeofb.d: Likewise.
	* testsuite/ld-elf/startofa.d: Likewise.
	* testsuite/ld-elf/startofb.d: Likewise.

ld/ChangeLog

@@ -1,3 +1,11 @@
+2017-06-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/ld-elf/sizeofa.d: Skip on targets with leading char
+	in symbol name.
+	* testsuite/ld-elf/sizeofb.d: Likewise.
+	* testsuite/ld-elf/startofa.d: Likewise.
+	* testsuite/ld-elf/startofb.d: Likewise.
+
 2017-06-14  Georg-Johann Lay  <gjl@gcc.gnu.org>
 
 	PR ld/21583

ld/testsuite/ld-elf/sizeofa.d

@@ -1,6 +1,10 @@
 #source: sizeof.s
 #ld: -Ur
 #readelf: -sW
+#notarget: bfin-*-* cr16-*-* cr16c-*-* cris*-*-* crx-*-* epiphany-*-*
+#notarget: h8300-*-* ip2k-*-* m10200-*-* m10300-*-* m32c-*-* metag-*-*
+#notarget: metag-*-* rl78-*-* rx-*-* sh*-*-* v850*-*-*
+# Targets with a leading char will faill this test.
 
 Symbol table '\.symtab' contains [0-9]+ entries:
  +Num: +Value +Size Type +Bind +Vis +Ndx Name

ld/testsuite/ld-elf/sizeofb.d

@@ -2,6 +2,10 @@
 #ld: -shared
 #readelf: -sW
 #target: *-*-linux* *-*-gnu*
+#notarget: bfin-*-* cr16-*-* cr16c-*-* cris*-*-* crx-*-* epiphany-*-*
+#notarget: h8300-*-* ip2k-*-* m10200-*-* m10300-*-* m32c-*-* metag-*-*
+#notarget: metag-*-* rl78-*-* rx-*-* sh*-*-* v850*-*-*
+# Targets with a leading char will faill this test.
 
 Symbol table '\.dynsym' contains [0-9]+ entries:
  +Num: +Value +Size Type +Bind +Vis +Ndx Name

ld/testsuite/ld-elf/startofa.d

@@ -1,6 +1,10 @@
 #source: startof.s
 #ld: -Ur
 #readelf: -sW
+#notarget: bfin-*-* cr16-*-* cr16c-*-* cris*-*-* crx-*-* epiphany-*-*
+#notarget: h8300-*-* ip2k-*-* m10200-*-* m10300-*-* m32c-*-* metag-*-*
+#notarget: metag-*-* rl78-*-* rx-*-* sh*-*-* v850*-*-*
+# Targets with a leading char will faill this test.
 
 Symbol table '\.symtab' contains [0-9]+ entries:
  +Num: +Value +Size Type +Bind +Vis +Ndx Name

ld/testsuite/ld-elf/startofb.d

@@ -2,6 +2,10 @@
 #ld: -shared
 #readelf: -sW
 #target: *-*-linux* *-*-gnu*
+#notarget: bfin-*-* cr16-*-* cr16c-*-* cris*-*-* crx-*-* epiphany-*-*
+#notarget: h8300-*-* ip2k-*-* m10200-*-* m10300-*-* m32c-*-* metag-*-*
+#notarget: metag-*-* rl78-*-* rx-*-* sh*-*-* v850*-*-*
+# Targets with a leading char will faill this test.
 
 Symbol table '\.dynsym' contains [0-9]+ entries:
  +Num: +Value +Size Type +Bind +Vis +Ndx Name