2004-05-24  Jie Zhang  <jiez@citiz.net>

	* config/tc-ia64.c (emit_one_bundle): Check if the
	application register is accessed by the right execution
	unit.

Index: tc-ia64.c
===================================================================
RCS file: /cvs/src/src/gas/config/tc-ia64.c,v
retrieving revision 1.109
diff -c -3 -p -r1.109 tc-ia64.c
*** tc-ia64.c	6 May 2004 22:32:44 -0000	1.109
--- tc-ia64.c	23 May 2004 16:46:02 -0000
*************** emit_one_bundle ()
*** 6388,6393 ****
--- 6388,6425 ----
  	  continue;		/* try next slot */
  	}
  
+       /* Make sure that application register is accessed by the
+ 	 right execution unit. */
+       for (j = 0; j < NELEMS (idesc->operands); j++)
+ 	{
+ 	  expressionS *e;
+ 
+ 	  if (idesc->operands[j] == IA64_OPND_NIL)
+ 	    break;
+ 
+ 	  e = & md.slot[curr].opnd[j];
+ 
+ 	  /* If application register is accessed by the wrong
+ 	     execution unit, we report an error. */
+ 	  if (e->X_op == O_register
+ 	      && e->X_add_number > REG_AR
+ 	      && e->X_add_number <= REG_AR + 128)
+ 	    {
+ 	      if (ar_is_in_integer_unit (e->X_add_number)
+ 	  	  && insn_unit != IA64_UNIT_I)
+ 		as_bad_where (md.slot[curr].src_file,
+ 			      md.slot[curr].src_line,
+ 			      "appliction register %d can only be accessed by I-unit",
+ 			      (int)(e->X_add_number - REG_AR));
+ 	      else if (!ar_is_in_integer_unit (e->X_add_number)
+ 		       && insn_unit != IA64_UNIT_M)
+ 		as_bad_where (md.slot[curr].src_file,
+ 			      md.slot[curr].src_line,
+ 			      "appliction register %d can only be accessed by M-unit",
+ 			      (int)(e->X_add_number - REG_AR));
+ 	    }
+ 	}
+ 
        {
  	bfd_vma addr;