This is the first time I've multi-arched a macro, so I'd be grateful if 
someone who has done all this before could give this patch a quick 
once-over to ensure I've not done anything stupid.

R.

<date>  Richard Earnshaw  <rearnsha@arm.com>

	* gdbarch.h (SMASH_TEXT_ADDRESS): Add multi-arch defines.
	* gdbarch.sh (SMASH_TEXT_ADDRESS): Add rule.
	* gdbarch.c (struct gdbarch): Add entry for it.
	(startup_gdbarch): Likewise.
	(gdbarch_alloc): Default it.
	(verify_gdbarch): Skip verify of it.
	(gdbarch_dump): Dump it.
	(gdbarch_smash_text_address): New function.
	* coffread.c: Multi-arch uses of SMASH_TEXT_ADDRESS.
	* dbxread.c: Likewise.
	* dwarfread.c: Likewise.
	* elfread.c: Likewise.
	* somread.c: Likewise.

	* arm-tdep.c (arm_smash_text_address): New function.
	* config/arm/tm-arm.h (SMASH_TEXT_ADDRESS): Define in terms of above.