[binutils][Arm] Fix Branch Future relocation handling and testisms

bfd/ChangeLog:
2019-05-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	PR/target 24460
	* elf32-arm.c (get_value_helper): Remove.
	(elf32_arm_final_link_relocate): Fix branch future relocations.

gas/ChangeLog:
2019-05-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* testsuite/gas/arm/armv8_1-m-bf.d: Allow different branch target naming
	conventions.
	* testsuite/gas/arm/armv8_1-m-bfl.d: Likewise.
	* testsuite/gas/arm/armv8_1-m-bfcsel.d: Likewise.
	* testsuite/gas/arm/armv8_1-m-loloop.d: Likewise.
	* testsuite/gas/arm/armv8_1-m-bf-rel.d: Skip for vxworks.
	* testsuite/gas/arm/armv8_1-m-bf-rela.d: New test.
	* testsuite/gas/arm/armv8_1-m-bfl-rel.d: Skip for vxworks.
	* testsuite/gas/arm/armv8_1-m-bfl-rela.d: New test.

ld/ChangeLog:
2019-05-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* testsuite/ld-arm/arm-elf.exp: Add tests
	* testsuite/ld-arm/bfs-0.s: New test.
	* testsuite/ld-arm/bfs-1.s: New test.
	* testsuite/ld-arm/branch-futures.d: New test.

5 files changed, 54 insertions, 0 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 77beea0..05af393 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,10 @@
+2019-05-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>
+
+	* testsuite/ld-arm/arm-elf.exp: Add tests
+	* testsuite/ld-arm/bfs-0.s: New test.
+	* testsuite/ld-arm/bfs-1.s: New test.
+	* testsuite/ld-arm/branch-futures.d: New test.
+
 2019-05-21  Tamar Christina  <tamar.christina@arm.com>
 
 	PR ld/24373
diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp
index 5471895..7d3217f 100644
--- a/ld/testsuite/ld-arm/arm-elf.exp
+++ b/ld/testsuite/ld-arm/arm-elf.exp
@@ -42,6 +42,11 @@ if {[istarget "arm-*-vxworks"]} {
 	 "" {vxworks2.s}
 	 {{readelf --segments vxworks2-static.sd}}
 	 "vxworks2"}
+	{"Branch future relocations for armv8.1-m.main target"
+	  "-static -T arm.ld"
+	  "" "" {bfs-0.s bfs-1.s}
+	  {{objdump -dw branch-futures.d}}
+	 "branch-futures"}
     }
     run_ld_link_tests $armvxworkstests
     run_dump_test "vxworks1-static"
@@ -260,6 +265,10 @@ set armelftests_common_3 {
     {"ADDS thumb1 relocations for armv7-m target" "-static -T arm.ld" "" "" {thumb1-adds-armv7-m.s}
      {{objdump -dw thumb1-adds.d}}
      "thumb1-adds"}
+    {"Branch future relocations for armv8.1-m.main target" "-static -T arm.ld"
+      "" "" {bfs-0.s bfs-1.s}
+      {{objdump -dw branch-futures.d}}
+     "branch-futures"}
 }
 
 run_ld_link_tests $armelftests_common_1
diff --git a/ld/testsuite/ld-arm/bfs-0.s b/ld/testsuite/ld-arm/bfs-0.s
new file mode 100644
index 0000000..844417a
--- /dev/null
+++ b/ld/testsuite/ld-arm/bfs-0.s
@@ -0,0 +1,12 @@
+.arch armv8.1-m.main
+.text
+.syntax unified
+.thumb
+future:
+	bf	branch, target
+	bfcsel	branch, target, else, eq
+	bfl	branch, target
+	add	r0, r0, r1
+branch:
+	b	target
+else:
diff --git a/ld/testsuite/ld-arm/bfs-1.s b/ld/testsuite/ld-arm/bfs-1.s
new file mode 100644
index 0000000..2b72819
--- /dev/null
+++ b/ld/testsuite/ld-arm/bfs-1.s
@@ -0,0 +1,9 @@
+.arch armv8.1-m.main
+.text
+.syntax unified
+.thumb
+.global _start
+.global target
+_start:
+target:
+	add	r0, r0, r1
diff --git a/ld/testsuite/ld-arm/branch-futures.d b/ld/testsuite/ld-arm/branch-futures.d
new file mode 100644
index 0000000..427ecce
--- /dev/null
+++ b/ld/testsuite/ld-arm/branch-futures.d
@@ -0,0 +1,17 @@
+
+.*:     file format elf32-.*
+
+
+Disassembly of section .text:
+
+0[0-9a-f]+ <future>:
+    [0-9a-f]+:	f2c0 e807 	bf	a, 8012 <_start>
+    [0-9a-f]+:	f182 e805 	bfcsel	6, 8012 <_start>, a, eq
+    [0-9a-f]+:	f080 c803 	bfl	2, 8012 <_start>
+    [0-9a-f]+:	4408      	add	r0, r1
+
+0[0-9a-f]+ <branch>:
+    [0-9a-f]+:	f000 b800 	b.w	8012 <_start>
+
+0[0-9a-f]+ <_start>:
+    [0-9a-f]+:	4408      	add	r0, r1