2013-04-10 Venkataramanan Kumar <venkataramanan.kumar@linaro.org>

* ld-aarch64/gc-plt1.s: New file.
        * ld-aarch64/gc-plt2.s: Likewise.
        * ld-aarch64/gc-plt-hidden.s: Likewise.
        * ld-aarch64/gc-plt-main.s: Likewise.
        * ld-aarch64/gc-relocs-257.s: Likewise.
        * ld-aarch64/gc-plt-relocs.d: Update expected objdump.
        * ld-aarch64/gc-relocs-257.d: Likewise.
        * ld-aarch64/gc-relocs-257-dyn.d: Likewise.
        * ld-aarch64/aarch64-elf.exp: Add test.

ld/testsuite/ChangeLog

@@ -1,3 +1,15 @@
+2013-04-10  Venkataramanan Kumar  <venkataramanan.kumar@linaro.org>
+
+	* ld-aarch64/gc-plt1.s: New file.
+	* ld-aarch64/gc-plt2.s: Likewise.
+	* ld-aarch64/gc-plt-hidden.s: Likewise.
+	* ld-aarch64/gc-plt-main.s: Likewise.
+	* ld-aarch64/gc-relocs-257.s: Likewise.
+	* ld-aarch64/gc-plt-relocs.d: Update expected objdump.
+	* ld-aarch64/gc-relocs-257.d: Likewise.
+	* ld-aarch64/gc-relocs-257-dyn.d: Likewise.
+	* ld-aarch64/aarch64-elf.exp: Add test.
+
 2013-04-08  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
 
 	* ld-aarch64/gc-tls-relocs.d: Handle big endian format.

ld/testsuite/ld-aarch64/aarch64-elf.exp

@@ -111,3 +111,6 @@ run_dump_test "tls-relax-ie-le-3"
 run_dump_test "tlsle-symbol-offset"
 run_dump_test "gc-got-relocs"
 run_dump_test "gc-tls-relocs"
+run_dump_test "gc-plt-relocs"
+run_dump_test "gc-relocs-257-dyn"
+run_dump_test "gc-relocs-257"

ld/testsuite/ld-aarch64/gc-plt-hidden.s

@@ -0,0 +1,7 @@
+	.text
+	.globl hidfn
+	.hidden hidfn
+	.type hidfn, %function
+hidfn:
+	and x0, x0, x0
+	.size hidfn, . - hidfn

ld/testsuite/ld-aarch64/gc-plt-main.s

@@ -0,0 +1,8 @@
+	.data
+	.global var
+	.text
+	.globl _start
+	.type _start, %function
+_start:
+	bl	foo
+	.size _start, . - _start

ld/testsuite/ld-aarch64/gc-plt-relocs.d

@@ -0,0 +1,48 @@
+#source: gc-plt1.s
+#source: gc-plt-main.s
+#source: gc-plt-hidden.s
+#source: gc-plt2.s
+#ld: --gc-sections -T aarch64.ld --shared
+#objdump: -dT
+
+# Shared object with plt related relocs against global symbol
+# and local functions gced.  After gc-section removal we are
+# checking that the function does not exist.
+
+.*:     file format elf64-(little|big)aarch64
+
+DYNAMIC SYMBOL TABLE:
+0+8000 l    d  \.text	0+ \.text
+0+8000 g    DF \.text	0+4 _start
+0+0000      D  \*UND\*	0+ foo
+0+8008 g    DF \.text	0+ bar
+
+Disassembly of section .text:
+
+0+8000 \<_start\>:
+    8000:	9400000c 	bl	8030 \<foo\+0x24\>
+
+0+8004 \<hidfn\>:
+    8004:	8a000000 	and	x0, x0, x0
+
+0+8008 \<bar\>:
+    8008:	14000001 	b	800c \<foo\>
+
+0+800c \<foo\>:
+    800c:	97fffffe 	bl	8004 \<hidfn\>
+
+Disassembly of section .plt:
+
+0+8010 \<\.plt\>:
+    8010:	a9bf7bf0 	stp	x16, x30, \[sp,#-16\]!
+    8014:	b0000010 	adrp	x16, 9000 .*
+    8018:	f9400a11 	ldr	x17, \[x16,#16\]
+    801c:	91004210 	add	x16, x16, #0x10
+    8020:	d61f0220 	br	x17
+    8024:	d503201f 	nop
+    8028:	d503201f 	nop
+    802c:	d503201f 	nop
+    8030:	b0000010 	adrp	x16, 9000 .*
+    8034:	f9400e11 	ldr	x17, \[x16,#24\]
+    8038:	91006210 	add	x16, x16, #0x18
+    803c:	d61f0220 	br	x17

ld/testsuite/ld-aarch64/gc-plt1.s

@@ -0,0 +1,9 @@
+plt_relocs:
+	adrp x0, :pg_hi21:var
+	ldr  x0, [x0, :lo12:var]
+
+	adrp x1, :pg_hi21_nc:var
+	ldr  x1, [x1, :lo12:var]
+
+	b bar
+	bl foo

ld/testsuite/ld-aarch64/gc-plt2.s

@@ -0,0 +1,11 @@
+	.text
+	.align  2
+	.global bar
+	.type   bar, %function
+bar:
+	b foo
+
+	.align  2
+	.type   foo, %function
+foo:
+	bl hidfn

ld/testsuite/ld-aarch64/gc-relocs-257-dyn.d

@@ -0,0 +1,16 @@
+#source: gc-start.s
+#source: gc-relocs-257.s
+#ld: --defsym tempy=0x11012 --defsym tempy2=0x45034 --defsym tempy3=0x1234   -T aarch64.ld   -shared  --gc-sections
+#objdump: -R -d
+
+# This tests if the linker is able to remove dynamic relocs created
+# for R_AARCH64_ABS64 while removing a gc section.  The section is
+# also removed.  So after gc, we should be left with the startup code.
+
+.*:     file format elf64-(little|big)aarch64
+
+
+Disassembly of section .text:
+
+0+8000 \<_start\>:
+    8000:	d503201f 	nop

ld/testsuite/ld-aarch64/gc-relocs-257.d

@@ -0,0 +1,16 @@
+#source: gc-start.s
+#source: gc-relocs-257.s
+#ld: --defsym tempy=0x11012 --defsym tempy2=0x45034 --defsym tempy3=0x1234   -T aarch64.ld  --gc-sections
+#objdump:  -d
+
+# This tests if linker is able to remove gc section containing
+# R_AARCH64_ABS64 relocs.  So after gc, we should be left with
+# only the startup code.
+
+.*:     file format elf64-(little|big)aarch64
+
+
+Disassembly of section .text:
+
+0+8000 \<_start\>:
+    8000:	d503201f 	nop

ld/testsuite/ld-aarch64/gc-relocs-257.s

@@ -0,0 +1,8 @@
+	.text
+	.word   tempy
+	.xword  tempy2
+	.hword  tempy3
+	.hword  tempy3+8
+
+	and	x0, x0, x0
+	and	x0, x0, #0x1