[PATCH][GAS] arm: add armv9-a architecture to -march

[Przemyslaw Wirkus]

Ping :)

> -----Original Message-----
> From: Przemyslaw Wirkus
> Sent: 04 October 2021 21:25
> To: Binutils <binutils@sourceware.org>
> Cc: Richard Earnshaw <Richard.Earnshaw@arm.com>; Marcus Shawcroft
> (Marcus.Shawcroft@arm.com) <Marcus.Shawcroft@arm.com>; Nick Clifton
> <nickc@redhat.com>
> Subject: [PATCH][GAS] arm: add armv9-a architecture to -march
> 
> Patch is adding `armv9-a` to -march in Arm GAS.
> 
> This patch also updates:
> 	+ New value of Tag_CPU_arch EABI attribute (22) is added, see [0].
> 	+ Updated missing from code Tag_CPU_arch EABI attributes for
> 	  "Arm v8.1-A", "Arm v8.2-A" and "Arm v8.3-A" entries, see [0].
> 	+ New test `armv9-a_arch.d` to demonstrate that (22) is recognised
> 	  by readelf.
> 	+ Commit [1] extends arm_feature_set.core array. A follow up
> change
> 	  is done to e.g., initialize (with 0s) or other values existing
> 	  ARM_FEATURE_x macros. New macro ARM_FEATURE_ALL is added
> set all
> 	  fields of arm_feature_set.core array.
> 	+ Various changes are made to align asserts with new V9 arch.
> 	+ Updated how we combine archs 'v4t_plus_v6_m' as this
> mechanism
> 	must handle new Armv9 as well.
> 
> 	[0] https://github.com/ARM-software/abi-
> aa/blob/main/addenda32/addenda32.rst#3352the-target-related-attributes
> 	[1] 2c6ccfcfdde1 (arm: Extend again arm_feature_set struct to
> provide
> 	    more bits).
> 
> Regression tested on `arm-none-eabi` cross Binutils and no issues.
> 
> OK for master?
> 
> bfd/
> 
> 2021-09-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>
> 
> 	* archures.c: Define bfd_mach_arm_9.
> 	* bfd-in2.h (bfd_mach_arm_9): Define bfd_mach_arm_9.
> 	* cpu-arm.c: Add 'armv9-a' option to -march.
> 	* elf32-arm.c (using_thumb2_bl): Update assert check.
> 	(arch_has_arm_nop): Add TAG_CPU_ARCH_V9.
> 	(bfd_arm_get_mach_from_attributes): Add case for
> TAG_CPU_ARCH_V9.
> 	Update assert.
> 	(tag_cpu_arch_combine): Updated table.
> 	(tag_cpu_arch_combine): Updated table.
> 	(tag_cpu_arch_combine): Updated table.
> 	(v9): New table..
> 
> binutils/
> 
> 2021-09-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>
> 
> 	* readelf.c (arm_attr_tag_CPU_arch): Update with
> 
> elfcpp/
> 
> 2021-09-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>
> 
> 	* arm.h: Update TAG_CPU_ARCH_ enums with currect values.
> 
> gas/
> 
> 2021-09-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>
> 
> 	* NEWS: Update docs.
> 	* config/tc-arm.c (get_aeabi_cpu_arch_from_fset): Return Armv9-a
> 	for -amarch=all.
> 	(aeabi_set_public_attributes): Update assert.
> 	* doc/c-arm.texi: Update docs.
> 	* testsuite/gas/arm/armv9-a_arch.d: New test.
> 	* testsuite/gas/arm/attr-march-all.d: Update test with v9.
> 
> include/
> 
> 2021-09-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>
> 
> 	* elf/arm.h Update TAG_CPU_ARCH_ defines with currect values.
> 	* opcode/arm.h (ARM_EXT3_V9A): New macro.
> 	(ARM_ARCH_NONE): Updated with arm_feature_set.core size.
> 	(FPU_NONE): Updated.
> 	(ARM_ANY): Updated.
> 	(ARM_ARCH_UNKNOWN): New macro.
> 	(ARM_FEATURE_LOW): Updated.
> 	(ARM_FEATURE_CORE): Updated.
> 	(ARM_FEATURE_CORE_LOW): Updated.
> 	(ARM_FEATURE_CORE_HIGH): Updated.
> 	(ARM_FEATURE_COPROC): Updated.
> 	(ARM_FEATURE): Updated.
> 	(ARM_FEATURE_ALL): New macro.
> 
> opcodes/
> 
> 2021-09-21  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>
> 
> 	* arm-dis.c (select_arm_features): Support bfd_mach_arm_9.
> 	Also Update bfd_mach_arm_unknown to use new macro
> ARM_ARCH_UNKNOWN.