[binutils-gdb] Add assembler and disassembler support for the new Armv8.4-a registers for AArch64.

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 793a194839bc8add71fdc7429c58b10f0667a6f6 ***

Author: Tamar Christina <tamar.christina@arm.com>
Branch: master
Commit: 793a194839bc8add71fdc7429c58b10f0667a6f6

Add assembler and disassembler support for the new Armv8.4-a registers 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.

opcodes/

	* aarch64-opc.c (aarch64_sys_regs): Add ARMv8.4-a registers;
	dit, vstcr_el2, vsttbr_el2, cnthvs_tval_el2, cnthvs_cval_el2,
	cnthvs_ctl_el2, cnthps_tval_el2, cnthps_cval_el2, cnthps_ctl_el2,
	sder32_el2, vncr_el2.
	(aarch64_sys_reg_supported_p): Likewise.
	(aarch64_pstatefields): Add dit register.
	(aarch64_pstatefield_supported_p): Likewise.
	(aarch64_sys_regs_tlbi): Add vmalle1os, vae1os, aside1os, vaae1os,
	vale1os, vaale1os, ipas2e1os, ipas2le1os, vae2os, vale2os, vmalls12e1os,
	vae3os, vale3os, alle2os, alle1os, alle3os, rvae1, rvaae1, rvale1,
	rvaale1, rvae1is, rvaae1is, rvale1is, rvaale1is, rvae1os, rvaae1os,
	rvale1os, rvaale1os, ripas2e1is, ripas2le1is, ripas2e1, ripas2le1,
	ripas2e1os, ripas2le1os, rvae2, rvale2, rvae2is, rvale2is, rvae2os,
	rvale2os, rvae3, rvale3, rvae3is, rvale3is, rvae3os, rvale3os.

gas/testsuite

	* gas/aarch64/armv8_4-a-registers-illegal.d: New.
	* gas/aarch64/armv8_4-a-registers-illegal.l: New.
	* gas/aarch64/armv8_4-a-registers-illegal.s: New.
	* gas/aarch64/armv8_4-a-registers.d: New.
	* gas/aarch64/armv8_4-a-registers.s: New.