[ARM]Update for Tag_ABI_HardFP_use per EABI doc

Updated how we merge and display this attribute per the latest
EABI documents.

bfd/ChangeLog
	* elf32-arm.c (elf32_arm_merge_eabi_attributes): Update how we
	merge Tag_ABI_HardFP_use.

binutils/ChangeLog
	* readelf.c (arm_attr_tag_ABI_HardFP_use): Update how we
	display it.

ld/testsuite/ChangeLog
	* ld-arm/attr-merge-3.attr: Remove Tag_ABI_HardFP_use.
	* ld-arm/attr-merge-vfp-10.d: Likewise.
	* ld-arm/attr-merge-vfp-10r.d: Likewise.
	* ld-arm/attr-merge-vfp-12.d: Likewise.
	* ld-arm/attr-merge-vfp-12r.d: Likewise.
	* ld-arm/attr-merge-vfp-13.d: Likewise.
	* ld-arm/attr-merge-vfp-13r.d: Likewise.
	* ld-arm/attr-merge-vfp-14.d: Likewise.
	* ld-arm/attr-merge-vfp-14r.d: Likewise.
	* ld-arm/attr-merge-vfp-6.d: Likewise.
	* ld-arm/attr-merge-vfp-6r.d: Likewise.
	* ld-arm/attr-merge-vfp-7.d: Likewise.
	* ld-arm/attr-merge-vfp-7r.d: Likewise.
	* ld-arm/attr-merge-vfp-8.d: Likewise.
	* ld-arm/attr-merge-vfp-8r.d: Likewise.

8 files changed, 71 insertions, 0 deletions

diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-0.d b/gas/testsuite/gas/arm/attr-abi-hardfp-use-0.d
new file mode 100644
index 0000000..bf7ec97
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-0.d
@@ -0,0 +1,14 @@
+# name: EABI attribute Tag_ABI_HardFP_use with value 0
+# source: attr-abi-hardfp-use-0.s
+# as:
+# readelf: -A
+# This test is only valid on EABI based ports.
+# target: *-*-*eabi* *-*-nacl*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "Cortex-M7"
+  Tag_CPU_arch: v7E-M
+  Tag_CPU_arch_profile: Microcontroller
+  Tag_THUMB_ISA_use: Thumb-2
+  Tag_FP_arch: FPv5/FP-D16 for ARMv8
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-0.s b/gas/testsuite/gas/arm/attr-abi-hardfp-use-0.s
new file mode 100644
index 0000000..649d0fe
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-0.s
@@ -0,0 +1,3 @@
+.cpu cortex-m7
+.fpu fpv5-d16
+.eabi_attribute 27, 0
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-1.d b/gas/testsuite/gas/arm/attr-abi-hardfp-use-1.d
new file mode 100644
index 0000000..712bd6c
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-1.d
@@ -0,0 +1,15 @@
+# name: EABI attribute Tag_ABI_HardFP_use with value 1
+# source: attr-abi-hardfp-use-1.s
+# as:
+# readelf: -A
+# This test is only valid on EABI based ports.
+# target: *-*-*eabi* *-*-nacl*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "Cortex-M7"
+  Tag_CPU_arch: v7E-M
+  Tag_CPU_arch_profile: Microcontroller
+  Tag_THUMB_ISA_use: Thumb-2
+  Tag_FP_arch: FPv5/FP-D16 for ARMv8
+  Tag_ABI_HardFP_use: SP only
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-1.s b/gas/testsuite/gas/arm/attr-abi-hardfp-use-1.s
new file mode 100644
index 0000000..adc7049
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-1.s
@@ -0,0 +1,3 @@
+.cpu cortex-m7
+.fpu fpv5-sp-d16
+.eabi_attribute 27, 1
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-2.d b/gas/testsuite/gas/arm/attr-abi-hardfp-use-2.d
new file mode 100644
index 0000000..a06c8be
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-2.d
@@ -0,0 +1,15 @@
+# name: EABI attribute Tag_ABI_HardFP_use with value 2
+# source: attr-abi-hardfp-use-2.s
+# as:
+# readelf: -A
+# This test is only valid on EABI based ports.
+# target: *-*-*eabi* *-*-nacl*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "Cortex-M7"
+  Tag_CPU_arch: v7E-M
+  Tag_CPU_arch_profile: Microcontroller
+  Tag_THUMB_ISA_use: Thumb-2
+  Tag_FP_arch: FPv5/FP-D16 for ARMv8
+  Tag_ABI_HardFP_use: Reserved
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-2.s b/gas/testsuite/gas/arm/attr-abi-hardfp-use-2.s
new file mode 100644
index 0000000..6723514
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-2.s
@@ -0,0 +1,3 @@
+.cpu cortex-m7
+.fpu fpv5-d16
+.eabi_attribute 27, 2
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-3.d b/gas/testsuite/gas/arm/attr-abi-hardfp-use-3.d
new file mode 100644
index 0000000..3e42741
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-3.d
@@ -0,0 +1,15 @@
+# name: EABI attribute Tag_ABI_HardFP_use with value 3
+# source: attr-abi-hardfp-use-3.s
+# as:
+# readelf: -A
+# This test is only valid on EABI based ports.
+# target: *-*-*eabi* *-*-nacl*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "Cortex-M7"
+  Tag_CPU_arch: v7E-M
+  Tag_CPU_arch_profile: Microcontroller
+  Tag_THUMB_ISA_use: Thumb-2
+  Tag_FP_arch: FPv5/FP-D16 for ARMv8
+  Tag_ABI_HardFP_use: Deprecated
diff --git a/gas/testsuite/gas/arm/attr-abi-hardfp-use-3.s b/gas/testsuite/gas/arm/attr-abi-hardfp-use-3.s
new file mode 100644
index 0000000..55ed6be
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-abi-hardfp-use-3.s
@@ -0,0 +1,3 @@
+.cpu cortex-m7
+.fpu fpv5-d16
+.eabi_attribute 27, 3