[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.

22 files changed, 86 insertions, 15 deletions

diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp
index 9d946e0..28b41ca 100644
--- a/ld/testsuite/ld-arm/arm-elf.exp
+++ b/ld/testsuite/ld-arm/arm-elf.exp
@@ -896,6 +896,8 @@ run_dump_test "attr-merge-vfp-14r"
 run_dump_test "attr-merge-incompatible"
 run_dump_test "attr-merge-arch-2"
 run_dump_test "attr-merge-nosection-1"
+run_dump_test "attr-merge-hardfp-use-1"
+run_dump_test "attr-merge-hardfp-use-2"
 run_dump_test "unresolved-1"
 if { ![istarget "arm*-*-nacl*"] } {
     run_dump_test "unresolved-1-dyn"
diff --git a/ld/testsuite/ld-arm/attr-merge-3.attr b/ld/testsuite/ld-arm/attr-merge-3.attr
index 8d7d1c3..0a3939c 100644
--- a/ld/testsuite/ld-arm/attr-merge-3.attr
+++ b/ld/testsuite/ld-arm/attr-merge-3.attr
@@ -22,7 +22,6 @@ File Attributes
   Tag_ABI_align_needed: 8-byte
   Tag_ABI_align_preserved: 8-byte, except leaf SP
   Tag_ABI_enum_size: small
-  Tag_ABI_HardFP_use: SP and DP
   Tag_ABI_VFP_args: VFP registers
   Tag_CPU_unaligned_access: v6
   Tag_FP_HP_extension: Allowed
diff --git a/ld/testsuite/ld-arm/attr-merge-hardfp-use-1.d b/ld/testsuite/ld-arm/attr-merge-hardfp-use-1.d
new file mode 100644
index 0000000..136ff41
--- /dev/null
+++ b/ld/testsuite/ld-arm/attr-merge-hardfp-use-1.d
@@ -0,0 +1,15 @@
+#source: attr-merge-hardfp-use-1a.s
+#source: attr-merge-hardfp-use-1b.s
+#as:
+#ld: -e main
+#readelf: -A
+# This test is only valid on ELF based ports.
+# not-target: *-*-*coff *-*-pe *-*-wince *-*-*aout* *-*-netbsd *-*-riscix*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "Cortex-M4"
+  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/ld/testsuite/ld-arm/attr-merge-hardfp-use-1a.s b/ld/testsuite/ld-arm/attr-merge-hardfp-use-1a.s
new file mode 100644
index 0000000..8a52860
--- /dev/null
+++ b/ld/testsuite/ld-arm/attr-merge-hardfp-use-1a.s
@@ -0,0 +1,12 @@
+        .syntax unified
+        .cpu cortex-m4
+        .fpu fpv4-sp-d16
+        .thumb
+        .text
+        .align  2
+        .global foo
+        .thumb
+        .thumb_func
+        .type   foo, %function
+foo:
+	bx lr
diff --git a/ld/testsuite/ld-arm/attr-merge-hardfp-use-1b.s b/ld/testsuite/ld-arm/attr-merge-hardfp-use-1b.s
new file mode 100644
index 0000000..3b3a05d
--- /dev/null
+++ b/ld/testsuite/ld-arm/attr-merge-hardfp-use-1b.s
@@ -0,0 +1,16 @@
+	.thumb
+	.syntax unified
+	.cpu cortex-m7
+	.fpu fpv5-d16
+	.eabi_attribute 27, 3
+        .text
+        .align  2
+        .global main
+        .thumb
+        .thumb_func
+        .type   main, %function
+
+
+
+main:
+	bl foo
diff --git a/ld/testsuite/ld-arm/attr-merge-hardfp-use-2.d b/ld/testsuite/ld-arm/attr-merge-hardfp-use-2.d
new file mode 100644
index 0000000..b7975de
--- /dev/null
+++ b/ld/testsuite/ld-arm/attr-merge-hardfp-use-2.d
@@ -0,0 +1,15 @@
+#source: attr-merge-hardfp-use-2a.s
+#source: attr-merge-hardfp-use-2b.s
+#as:
+#ld: -e main
+#readelf: -A
+# This test is only valid on ELF based ports.
+# not-target: *-*-*coff *-*-pe *-*-wince *-*-*aout* *-*-netbsd *-*-riscix*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "Cortex-M4"
+  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/ld/testsuite/ld-arm/attr-merge-hardfp-use-2a.s b/ld/testsuite/ld-arm/attr-merge-hardfp-use-2a.s
new file mode 100644
index 0000000..8a52860
--- /dev/null
+++ b/ld/testsuite/ld-arm/attr-merge-hardfp-use-2a.s
@@ -0,0 +1,12 @@
+        .syntax unified
+        .cpu cortex-m4
+        .fpu fpv4-sp-d16
+        .thumb
+        .text
+        .align  2
+        .global foo
+        .thumb
+        .thumb_func
+        .type   foo, %function
+foo:
+	bx lr
diff --git a/ld/testsuite/ld-arm/attr-merge-hardfp-use-2b.s b/ld/testsuite/ld-arm/attr-merge-hardfp-use-2b.s
new file mode 100644
index 0000000..59913a3
--- /dev/null
+++ b/ld/testsuite/ld-arm/attr-merge-hardfp-use-2b.s
@@ -0,0 +1,14 @@
+	.thumb
+	.syntax unified
+	.cpu cortex-m7
+	.fpu fpv5-d16
+	.eabi_attribute 27, 2
+        .text
+        .align  2
+        .global main
+        .thumb
+        .thumb_func
+        .type   main, %function
+
+main:
+	bl foo
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-10.d b/ld/testsuite/ld-arm/attr-merge-vfp-10.d
index f32f119..a7e2fff 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-10.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-10.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FPv5/FP-D16 for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-10r.d b/ld/testsuite/ld-arm/attr-merge-vfp-10r.d
index 35e0f77..581d1b0 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-10r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-10r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FPv5/FP-D16 for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-12.d b/ld/testsuite/ld-arm/attr-merge-vfp-12.d
index f6dff81..c97b9cd 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-12.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-12.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-12r.d b/ld/testsuite/ld-arm/attr-merge-vfp-12r.d
index 1ce719d..139c608 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-12r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-12r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-13.d b/ld/testsuite/ld-arm/attr-merge-vfp-13.d
index b79f606..4724cf4 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-13.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-13.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-13r.d b/ld/testsuite/ld-arm/attr-merge-vfp-13r.d
index 4633d4e..cc192bb 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-13r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-13r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-14.d b/ld/testsuite/ld-arm/attr-merge-vfp-14.d
index b93ef50..865351a 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-14.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-14.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-14r.d b/ld/testsuite/ld-arm/attr-merge-vfp-14r.d
index 2563938..c9e1354 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-14r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-14r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-6.d b/ld/testsuite/ld-arm/attr-merge-vfp-6.d
index 54d063f..2e37b47 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-6.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-6.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: VFPv3
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-6r.d b/ld/testsuite/ld-arm/attr-merge-vfp-6r.d
index f32d4fc..8c68442 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-6r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-6r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: VFPv3
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-7.d b/ld/testsuite/ld-arm/attr-merge-vfp-7.d
index 6b1f9c9..760a82f 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-7.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-7.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-7r.d b/ld/testsuite/ld-arm/attr-merge-vfp-7r.d
index 6b1f9c9..760a82f 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-7r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-7r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FP for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-8.d b/ld/testsuite/ld-arm/attr-merge-vfp-8.d
index 78b74af..22dee2a 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-8.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-8.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FPv5/FP-D16 for ARMv8
-  Tag_ABI_HardFP_use: SP and DP
diff --git a/ld/testsuite/ld-arm/attr-merge-vfp-8r.d b/ld/testsuite/ld-arm/attr-merge-vfp-8r.d
index 1fd5d63..7a21318 100644
--- a/ld/testsuite/ld-arm/attr-merge-vfp-8r.d
+++ b/ld/testsuite/ld-arm/attr-merge-vfp-8r.d
@@ -11,4 +11,3 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-1
   Tag_FP_arch: FPv5/FP-D16 for ARMv8
-  Tag_ABI_HardFP_use: SP and DP