[Patch ARM Gas] - strexh/strexb warn for bad addressing modes.

[Nick Clifton]

Hi James,

   Well finally, about two months late, I have committed your patch. 
Please accept my apology for taking so long to get to it, and thank you 
very much for writing the patch in the first place.

Cheers
   Nick

2011-08-26  James Greenhalgh  <james.greenhalgh@arm.com>

	* config/tc-arm.c (check_ldr_r15_aligned): New.
	(do_ldst): Warn in upredictable cases.
	(do_t_ldst): Likewise.
	(insns): Update accordingly.

gas/testsuite

2011-08-26  James Greenhalgh  <james.greenhalgh@arm.com>

	* gas/arm/ldr-bad.s: New testcase.
	* gas/arm/ldr-bad.l: Likewise.
	* gas/arm/ldr-bad.d: Likewise.
	* gas/arm/ldr.s: Likewise.
	* gas/arm/ldr.d: Likewise.
	* gas/arm/ldr-t-bad.s: Likewise.
	* gas/arm/ldr-t-bad.l: Likewise.
	* gas/arm/ldr-t-bad.d: Likewise.
	* gas/arm/ldr-t.s: Likewise.
	* gas/arm/ldr-t.d: Likewise.
	* gas/arm/sp-pc-usage-t.s: Correct.
	* gas/arm/sp-pc-usage-t.d: Update accordingly.