x86: Add GC testcases with property sections

Verify that debug section is removed by garbage collection when there
is a .note.gnu.property section.

	* testsuite/ld-i386/i386.exp: Run property-x86-4a and
	property-x86-4b.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-i386/property-x86-4a.d: New file.
	* testsuite/ld-i386/property-x86-4a.s: Likewise.
	* testsuite/ld-i386/property-x86-4b.d: Likewise.
	* testsuite/ld-i386/property-x86-4b.s: Likewise.
	* testsuite/ld-x86-64/property-x86-4a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-4a.s: Likewise.
	* testsuite/ld-x86-64/property-x86-4b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-4b.s: Likewise.

ld/ChangeLog

@@ -1,3 +1,17 @@
+2017-05-19  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/ld-i386/i386.exp: Run property-x86-4a and
+	property-x86-4b.
+	* testsuite/ld-x86-64/x86-64.exp: Likewise.
+	* testsuite/ld-i386/property-x86-4a.d: New file.
+	* testsuite/ld-i386/property-x86-4a.s: Likewise.
+	* testsuite/ld-i386/property-x86-4b.d: Likewise.
+	* testsuite/ld-i386/property-x86-4b.s: Likewise.
+	* testsuite/ld-x86-64/property-x86-4a.d: Likewise.
+	* testsuite/ld-x86-64/property-x86-4a.s: Likewise.
+	* testsuite/ld-x86-64/property-x86-4b.d: Likewise.
+	* testsuite/ld-x86-64/property-x86-4b.s: Likewise.
+
 2017-05-19  Georg-Johann Lay  <avr@gjlay.de>
 
 	PR ld/21472

ld/testsuite/ld-i386/i386.exp

@@ -418,6 +418,8 @@ run_dump_test "pr20253-4c"
 run_dump_test "pr20253-5"
 run_dump_test "pr20515"
 run_dump_test "property-x86-3"
+run_dump_test "property-x86-4a"
+run_dump_test "property-x86-4b"
 
 if { !([istarget "i?86-*-linux*"]
        || [istarget "i?86-*-gnu*"]

ld/testsuite/ld-i386/property-x86-4a.d

@@ -0,0 +1,10 @@
+#source: property-x86-4a.s
+#source: property-x86-4b.s
+#as: --32
+#ld: -m elf_i386 --gc-sections --entry=main
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+  Owner                 Data size	Description
+  GNU                  0x00000008	NT_GNU_PROPERTY_TYPE_0
+      Properties: no copy on protected 

ld/testsuite/ld-i386/property-x86-4a.s

@@ -0,0 +1,5 @@
+	.text
+	.globl  main
+	.type   main, @function
+main:
+	ret

ld/testsuite/ld-i386/property-x86-4b.d

@@ -0,0 +1,10 @@
+#source: property-x86-4a.s
+#source: property-x86-4b.s
+#as: --32
+#ld: -m elf_i386 --gc-sections --entry=main
+#readelf: -S --wide
+
+#failif
+#...
+ +\[ [0-9]\] .debug_info.*
+#...

ld/testsuite/ld-i386/property-x86-4b.s

@@ -0,0 +1,20 @@
+	.section .debug_info,"",@progbits
+	.hidden t.c.4903c230
+	.globl t.c.4903c230
+t.c.4903c230:
+	.byte 0x28
+
+	.section ".note.gnu.property", "a"
+	.p2align 2
+	.long 1f - 0f		/* name length.  */
+	.long 3f - 2f		/* data length.  */
+	/* NT_GNU_PROPERTY_TYPE_0 */
+	.long 5			/* note type.  */
+0:	.asciz "GNU"		/* vendor name.  */
+1:	.p2align 2
+2:
+	/* GNU_PROPERTY_NO_COPY_ON_PROTECTED */
+	.long 2			/* pr_type.  */
+	.long 0			/* pr_datasz.  */
+	.p2align 2
+3:

ld/testsuite/ld-x86-64/property-x86-4a.d

@@ -0,0 +1,10 @@
+#source: property-x86-4a.s
+#source: property-x86-4b.s
+#as: --64
+#ld: -m elf_x86_64 --gc-sections --entry=main
+#readelf: -n
+
+Displaying notes found in: .note.gnu.property
+  Owner                 Data size	Description
+  GNU                  0x00000008	NT_GNU_PROPERTY_TYPE_0
+      Properties: no copy on protected 

ld/testsuite/ld-x86-64/property-x86-4a.s

@@ -0,0 +1,5 @@
+	.text
+	.globl  main
+	.type   main, @function
+main:
+	ret

ld/testsuite/ld-x86-64/property-x86-4b.d

@@ -0,0 +1,10 @@
+#source: property-x86-4a.s
+#source: property-x86-4b.s
+#as: --64
+#ld: -m elf_x86_64 --gc-sections --entry=main
+#readelf: -S --wide
+
+#failif
+#...
+ +\[ [0-9]\] .debug_info.*
+#...

ld/testsuite/ld-x86-64/property-x86-4b.s

@@ -0,0 +1,20 @@
+	.section .debug_info,"",@progbits
+	.hidden t.c.4903c230
+	.globl t.c.4903c230
+t.c.4903c230:
+	.byte 0x28
+
+	.section ".note.gnu.property", "a"
+	.p2align 3
+	.long 1f - 0f		/* name length.  */
+	.long 3f - 2f		/* data length.  */
+	/* NT_GNU_PROPERTY_TYPE_0 */
+	.long 5			/* note type.  */
+0:	.asciz "GNU"		/* vendor name.  */
+1:	.p2align 3
+2:
+	/* GNU_PROPERTY_NO_COPY_ON_PROTECTED */
+	.long 2			/* pr_type.  */
+	.long 0			/* pr_datasz.  */
+	.p2align 3
+3:

ld/testsuite/ld-x86-64/x86-64.exp

@@ -330,6 +330,8 @@ run_dump_test "pr19969"
 run_dump_test "pr20093-1"
 run_dump_test "pr20093-2"
 run_dump_test "property-x86-3"
+run_dump_test "property-x86-4a"
+run_dump_test "property-x86-4b"
 
 if { ![istarget "x86_64-*-linux*"] && ![istarget "x86_64-*-nacl*"]} {
     return