ld: Add tests for .startof.SECNAME/.sizeof.SECNAME

* testsuite/ld-elf/sizeof.d: Renamed to ...
	* testsuite/ld-elf/sizeofa.d: This.  Updated.
	* testsuite/ld-elf/startof.d: Renamed to ...
	* testsuite/ld-elf/startofa.d: This.  Updated.
	* testsuite/ld-elf/sizeofb.d: New file.
	* testsuite/ld-elf/startofb.d: Likewise.

ld/ChangeLog

@@ -1,3 +1,12 @@
+2017-06-13  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/ld-elf/sizeof.d: Renamed to ...
+	* testsuite/ld-elf/sizeofa.d: This.  Updated.
+	* testsuite/ld-elf/startof.d: Renamed to ...
+	* testsuite/ld-elf/startofa.d: This.  Updated.
+	* testsuite/ld-elf/sizeofb.d: New file.
+	* testsuite/ld-elf/startofb.d: Likewise.
+
 2017-06-13  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/20022

ld/testsuite/ld-elf/sizeofa.d

@@ -1,3 +1,4 @@
+#source: sizeof.s
 #ld: -Ur
 #readelf: -sW
 

ld/testsuite/ld-elf/sizeofb.d

@@ -0,0 +1,13 @@
+#source: sizeof.s
+#ld: -shared
+#readelf: -sW
+#target: *-*-linux* *-*-gnu*
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +LOCAL +DEFAULT +[0-9]+ +__stop_scnfoo
+#...
+ +[0-9]+: 0+10 + +0 +NOTYPE +GLOBAL +DEFAULT +ABS +.sizeof.scnfoo
+#pass

ld/testsuite/ld-elf/startofa.d

@@ -1,3 +1,4 @@
+#source: startof.s
 #ld: -Ur
 #readelf: -sW
 

ld/testsuite/ld-elf/startofb.d

@@ -0,0 +1,13 @@
+#source: startof.s
+#ld: -shared
+#readelf: -sW
+#target: *-*-linux* *-*-gnu*
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +GLOBAL +DEFAULT +[0-9]+ +.startof.scnfoo
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +LOCAL +DEFAULT +[0-9]+ +__start_scnfoo
+#pass