[PATCH][GAS][AArch64] Add new instructions for Armv8.4-a [Patch (4/6)]

[Tamar Christina]

Hi All,

This patch adds assembler and disassembler support for the new Armv8.4-a instructions for AArch64.

Some of these instructions have been back-ported as optional extensions to Armv8.2-a and higher, but others are only available for Armv8.4-a.

Checked with check-gas on aarch64-none-elf and aach64_be-none-elf, no regressions.

Ok for master?

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

Thanks,
Tamar

opcodes/
2017-11-08  Tamar Christina  <tamar.christina@arm.com>

	* aarch64-tbl.h (sha512h, sha512h2, sha512su0, sha512su1, eor3): New.
	(rax1, xar, bcax, sm3ss1, sm3tt1a, sm3tt1b, sm3tt2a, sm3tt2b): New.
	(sm3partw1, sm3partw2, sm4e, sm4ekey, fmlal, fmlsl): New.
	(fmlal2, fmlsl2, cfinv, rmif, setf8, setf16, stlurb): New.
	(ldapurb, ldapursb, stlurh, ldapurh, ldapursh, stlur): New.
	(ldapur, ldapursw, stlur): New.
	* aarch64-dis-2.c: Regenerate.

gas/testsuite
2017-11-08  Tamar Christina  <tamar.christina@arm.com>

	* gas/aarch64/armv8_4-a-illegal.d: New.
	* gas/aarch64/armv8_4-a-illegal.l: New.
	* gas/aarch64/armv8_4-a-illegal.s: New.
	* gas/aarch64/armv8_4-a.d: New.
	* gas/aarch64/armv8_4-a.s: New.
	* gas/aarch64/armv8_2-a-crypto-fp16.s: New.
	* gas/aarch64/armv8_2-a-crypto-fp16.d: New.
	* gas/aarch64/armv8_3-a-crypto-fp16.d: New.
	* gas/aarch64/armv8_4-a-crypto-fp16.d: New.
	* gas/aarch64/armv8_2-a-crypto-fp16-illegal.s: New.
	* gas/aarch64/armv8_2-a-crypto-fp16-illegal.l: New.
	* gas/aarch64/armv8_2-a-crypto-fp16-illegal.d: New.

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