[PATCH, BINUTILS, AARCH64, 1/8] Add support for Memory Tagging Extension for ARMv8.5-A

[Sudakshina Das]

Hi

This series adds support for ARMv8.5-A Memory Tagging Extensions.
(https://developer.arm.com/products/architecture/cpu-architecture/a-profile/exploration-tools)
Memory Tagging Extension (MTE) is an optional extension to
ARMv8.5-A and is enabled using the +memtag command line option.

This patch adds the new command line option and the new feature macros.

Testing done: Builds and reg tests all pass on aarch64-none-linux-gnu.

Is this ok for trunk?

Thanks
Sudi


*** include/ChangeLog ***

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

	* opcode/aarch64.h (AARCH64_FEATURE_MTE): New.

*** opcodes/ChangeLog ***

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

	* aarch64-tbl.h (aarch64_feature_mte): New.
	(MTE, MTE_INSN): New.

*** gas/ChangeLog ***

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

	* config/tc-aarch64.c (aarch64_features): Add "memtag"
	as a new option.
	* doc/c-aarch64.texi: Document the same.


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