* Make sure that the object is the correct type.  This may be * overkill, butit is here because references were NS nodes in *  the past.  Now they are operand objects of type Reference. */ if (ACPI_GET_DESCRIPTOR_TYPE (current_obj_desc) != ACPI_DESC_TYPE_OPERAND) { ACPI_REPORT_ERROR (( "Invalid descriptor type while storing to method arg: [%s]\n", acpi_ut_get_descriptor_name (current_obj_desc))); return_ACPI_STATUS (AE_AML_INTERNAL); }  /* 
acpi_ds_store_object_to_local (	u16                             opcode,	u32                             index,	union acpi_operand_object       *obj_desc,	struct acpi_walk_state          *walk_state){	acpi_status                     status;	struct acpi_namespace_node      *node;	union acpi_operand_object       *current_obj_desc;	union acpi_operand_object       *new_obj_desc;	ACPI_FUNCTION_TRACE ("ds_store_object_to_local");	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode=%X Index=%d Obj=%p\n",		opcode, index, obj_desc));	/* Parameter validation */	if (!obj_desc) {		return_ACPI_STATUS (AE_BAD_PARAMETER);	}	/* Get the namespace node for the arg/local */	status = acpi_ds_method_data_get_node (opcode, index, walk_state, &node);	if (ACPI_FAILURE (status)) {		return_ACPI_STATUS (status);	}	current_obj_desc = acpi_ns_get_attached_object (node);	if (current_obj_desc == obj_desc) {		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",			obj_desc));		return_ACPI_STATUS (status);	}	/*	 * If the reference count on the object is more than one, we must	 * take a copy of the object before we store.  A reference count	 * of exactly 1 means that the object was just created during the	 * evaluation of an expression, and we can safely use it since it	 * is not used anywhere else.	 */	new_obj_desc = obj_desc;	if (obj_desc->common.reference_count > 1) {		status = acpi_ut_copy_iobject_to_iobject (obj_desc, &new_obj_desc, walk_state);		if (ACPI_FAILURE (status)) {			return_ACPI_STATUS (status);		}	}	/*	 * If there is an object already in this slot, we either	 * have to delete it, or if this is an argument and there	 * is an object reference stored there, we have to do	 * an indirect store!	 */	if (current_obj_desc) {		/*		 * Check for an indirect store if an argument		 * contains an object reference (stored as an Node).		 * We don't allow this automatic dereferencing for		 * locals, since a store to a local should overwrite		 * anything there, including an object reference.		 *		 * If both Arg0 and Local0 contain ref_of (Local4):		 *		 * Store (1, Arg0)             - Causes indirect store to local4		 * Store (1, Local0)           - Stores 1 in local0, overwriting		 *                                  the reference to local4		 * Store (1, de_refof (Local0)) - Causes indirect store to local4		 *		 * Weird, but true.		 */		if (opcode == AML_ARG_OP) {			/*			 * Make sure that the object is the correct type.  This may be			 * overkill, butit is here because references were NS nodes in			 *  the past.  Now they are operand objects of type Reference.			 */			if (ACPI_GET_DESCRIPTOR_TYPE (current_obj_desc) != ACPI_DESC_TYPE_OPERAND) {				ACPI_REPORT_ERROR ((					"Invalid descriptor type while storing to method arg: [%s]\n",					acpi_ut_get_descriptor_name (current_obj_desc)));				return_ACPI_STATUS (AE_AML_INTERNAL);			}			/*			 * If we have a valid reference object that came from ref_of(),			 * do the indirect store			 */			if ((current_obj_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) &&				(current_obj_desc->reference.opcode == AML_REF_OF_OP)) {				ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,						"Arg (%p) is an obj_ref(Node), storing in node %p\n",						new_obj_desc, current_obj_desc));				/*				 * Store this object to the Node (perform the indirect store)				 * NOTE: No implicit conversion is performed, as per the ACPI				 * specification rules on storing to Locals/Args.				 */				status = acpi_ex_store_object_to_node (new_obj_desc,						 current_obj_desc->reference.object, walk_state,						 ACPI_NO_IMPLICIT_CONVERSION);				/* Remove local reference if we copied the object above */				if (new_obj_desc != obj_desc) {					acpi_ut_remove_reference (new_obj_desc);				}				return_ACPI_STATUS (status);			}		}		/*		 * Delete the existing object		 * before storing the new one		 */		acpi_ds_method_data_delete_value (opcode, index, walk_state);	}	/*	 * Install the Obj descriptor (*new_obj_desc) into	 * the descriptor for the Arg or Local.	 * (increments the object reference count by one)	 */	status = acpi_ds_method_data_set_value (opcode, index, new_obj_desc, walk_state);	/* Remove local reference if we copied the object above */	if (new_obj_desc != obj_desc) {		acpi_ut_remove_reference (new_obj_desc);	}	return_ACPI_STATUS (status);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/73459f73e5d1602c59ebec114fc45185521353c1/dsmthdat.c/clean/drivers/acpi/dispatcher/dsmthdat.c