[PATCH, BINUTILS, ARM, 1/3] Add -march=armv8.5-a and related internal feature macros to AArch32

[Sudakshina Das <sudi dot das at arm dot com>]

Hi

Thia patch is part of the patch series to add support for ARMv8.5-A
extensions.
(https://developer.arm.com/products/architecture/cpu-architecture/a-profile/exploration-tools)

This is the first of the patch series and adds -march=armv8.5-a and
other internal feature marcos needed for it.

Testing done: Builds and reg tests all pass on arm-none-eabi and
added new test.

Ok for trunk?

Thanks
Sudi
PS. I do not have commit access so if OK can someone apply for me?


*** gas/ChangeLog ***

2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>

	* config/tc-arm.c (arm_archs): New entry for armv8.5-a.
	(cpu_arch_ver): Likewise.
	* doc/c-arm.texi: Add documentation for the same.
	* testsuite/gas/arm/attr-march-armv8_5-a.d: New.

*** include/ChnageLog ***

2018-xx-xx  Sudakshina Das  <sudi.das@arm.com>

	* opcode/arm.h (ARM_EXT2_V8_5A): New.
	(ARM_AEXT2_V8_5A, ARM_ARCH_V8_5A): New.


diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 3f5384e1c719de9fedf5a753abbe66c29a2e2afb..ef3af3a0110398b5ddb1c77856a9db895ef90fd1 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -26335,6 +26335,7 @@ static const struct arm_arch_option_table arm_archs[] =
   ARM_ARCH_OPT ("armv8.3-a",	ARM_ARCH_V8_3A,	 FPU_ARCH_VFP),
   ARM_ARCH_OPT ("armv8-r",	ARM_ARCH_V8R,	 FPU_ARCH_VFP),
   ARM_ARCH_OPT ("armv8.4-a",	ARM_ARCH_V8_4A,	 FPU_ARCH_VFP),
+  ARM_ARCH_OPT ("armv8.5-a",	ARM_ARCH_V8_5A,	 FPU_ARCH_VFP),
   ARM_ARCH_OPT ("xscale",	ARM_ARCH_XSCALE, FPU_ARCH_VFP),
   ARM_ARCH_OPT ("iwmmxt",	ARM_ARCH_IWMMXT, FPU_ARCH_VFP),
   ARM_ARCH_OPT ("iwmmxt2",	ARM_ARCH_IWMMXT2,FPU_ARCH_VFP),
@@ -27046,6 +27047,7 @@ static const cpu_arch_ver_table cpu_arch_ver[] =
     {TAG_CPU_ARCH_V8M_MAIN, ARM_ARCH_V8M_MAIN},
     {TAG_CPU_ARCH_V8R,	    ARM_ARCH_V8R},
     {TAG_CPU_ARCH_V8,	    ARM_ARCH_V8_4A},
+    {TAG_CPU_ARCH_V8,	    ARM_ARCH_V8_5A},
     {-1,		    ARM_ARCH_NONE}
 };
 
diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index a316c267e22c603ed529451a488d9b3d1baf5c56..522a1dbbba5aa23947e38b2fdbd8880a31ce7f0f 100644
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -241,6 +241,7 @@ names are recognized:
 @code{armv8.3-a},
 @code{armv8-r},
 @code{armv8.4-a},
+@code{armv8.5-a},
 @code{iwmmxt}
 @code{iwmmxt2}
 and
diff --git a/gas/testsuite/gas/arm/attr-march-armv8_5-a.d b/gas/testsuite/gas/arm/attr-march-armv8_5-a.d
new file mode 100644
index 0000000000000000000000000000000000000000..70b6074e48fab2aeb5acda4641ef95f4a0688972
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-march-armv8_5-a.d
@@ -0,0 +1,17 @@
+# name: attributes for -march=armv8.5-a
+# source: blank.s
+# as: -march=armv8.5-a
+# readelf: -A
+# This test is only valid on EABI based ports.
+# target: *-*-*eabi* *-*-nacl*
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "8.5-A"
+  Tag_CPU_arch: v8
+  Tag_CPU_arch_profile: Application
+  Tag_ARM_ISA_use: Yes
+  Tag_THUMB_ISA_use: Thumb-2
+  Tag_Advanced_SIMD_arch: NEON for ARMv8.1
+  Tag_MPextension_use: Allowed
+  Tag_Virtualization_use: TrustZone and Virtualization Extensions
diff --git a/include/opcode/arm.h b/include/opcode/arm.h
index 83b3f22c68fff11edda12a9a0312bfd45e3d0dda..bad131e51c5d84e30dcf32a8242a455749ae3d8a 100644
--- a/include/opcode/arm.h
+++ b/include/opcode/arm.h
@@ -68,6 +68,7 @@
 #define ARM_EXT2_V8A	 0x00000200	/* ARMv8-A.  */
 #define ARM_EXT2_V8_4A	 0x00000400	/* ARM V8.4A.  */
 #define ARM_EXT2_FP16_FML 0x00000800	/* ARM V8.2A FP16-FML instructions.  */
+#define ARM_EXT2_V8_5A	 0x00001000	/* ARM V8.5A.  */
 
 /* Co-processor space extensions.  */
 #define ARM_CEXT_XSCALE   0x00000001	/* Allow MIA etc.          */
@@ -159,6 +160,7 @@
 #define ARM_AEXT2_V8_2A	(ARM_AEXT2_V8_1A | ARM_EXT2_V8_2A | ARM_EXT2_RAS)
 #define ARM_AEXT2_V8_3A	(ARM_AEXT2_V8_2A | ARM_EXT2_V8_3A)
 #define ARM_AEXT2_V8_4A	(ARM_AEXT2_V8_3A | ARM_EXT2_FP16_FML | ARM_EXT2_V8_4A)
+#define ARM_AEXT2_V8_5A	(ARM_AEXT2_V8_4A | ARM_EXT2_V8_5A)
 #define ARM_AEXT_V8M_BASE (ARM_AEXT_V6SM | ARM_EXT_DIV)
 #define ARM_AEXT_V8M_MAIN ARM_AEXT_V7M
 #define ARM_AEXT_V8M_MAIN_DSP ARM_AEXT_V7EM
@@ -293,6 +295,9 @@
 #define ARM_ARCH_V8_4A	ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8_4A,	\
 				     CRC_EXT_ARMV8 | FPU_NEON_EXT_RDMA \
 				     | FPU_NEON_EXT_DOTPROD)
+#define ARM_ARCH_V8_5A	ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8_5A,	\
+				     CRC_EXT_ARMV8 | FPU_NEON_EXT_RDMA \
+				     | FPU_NEON_EXT_DOTPROD)
 #define ARM_ARCH_V8M_BASE ARM_FEATURE_CORE (ARM_AEXT_V8M_BASE, ARM_AEXT2_V8M)
 #define ARM_ARCH_V8M_MAIN ARM_FEATURE_CORE (ARM_AEXT_V8M_MAIN, \
 					    ARM_AEXT2_V8M_MAIN)