bfin.c (n_dregs_to_save, [...]): New argument IS_INTHANDLER; all callers changed.

bfin.c (n_dregs_to_save, [...]): New argument IS_INTHANDLER; all callers changed.

	* config/bfin/bfin.c (n_dregs_to_save, n_pregs_to_save,
	expand_prologue_reg_save, expand_epilogue_reg_restore): New argument
	IS_INTHANDLER; all callers changed.
	(n_regs_saved_by_prologue): Take interrupt handler attributes into
	account.
	(do_link, do_unlink): New argument ALL; all callers changed.
	(expand_interrupt_handler_prologue, expand_interrupt_handler_epilogue):
	If function isn't leaf, save and restore all registers.
	(bfin_function_ok_for_sibcall): Only true if not an interrupt or
	exception handler.

From-SVN: r106526