[RFA/ARM 02/21] Mark SWP as obsolete.

[Matthew Gretton-Dann]

ARMv8 obsoletes the SWP{B} instructions.

This patch updates the assembler to error in this case.

gas/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* config/tc-arm.c (check_obsolete): New function.
	(do_rd_rm_rn): Check swp{b} for obsoletion.

gas/testsuite/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gas/arm/armv8-a-bad.d: New testcase.
	* gas/arm/armv8-a-bad.l: Likewise.
	* gas/arm/armv8-a-bad.s: Likewise.
	* gas/arm/depr-swp.l: Update for change in expected output.
	* gas/arm/depr-swp.s: Add additional test.

include/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* opcode/arm.h (ARM_CPU_IS_ANY): New define.
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