public override void Visit(AmlParser.DefIndexField defIndexField)
{
Node indexNode = acpiNamespace.LookupNode(defIndexField.indexName.nodePath, currentPath);
CheckObjectType(indexNode.Value, AcpiObjectType.FieldUnit);
AcpiObject.FieldUnit indexField = (AcpiObject.FieldUnit)(indexNode.Value.GetTarget());
Node dataNode = acpiNamespace.LookupNode(defIndexField.dataName.nodePath, currentPath);
CheckObjectType(dataNode.Value, AcpiObjectType.FieldUnit);
AcpiObject.FieldUnit dataField = (AcpiObject.FieldUnit)(dataNode.Value.GetTarget());
OperationRegion indexFieldRegion =
new OperationRegion(new IndexFieldOperationRegionAccessor(indexField, dataField),
RegionSpace.SystemIO /*unused*/, 0, 256 /*index field never exceeds 8 bits*/);
AccessType accessType = defIndexField.fieldFlags.accessType;
AccessAttrib accessAttrib = AccessAttrib.SMBNone;
int bitIndex = 0;
foreach (FieldElement fieldElement in defIndexField.fieldList)
{
switch (fieldElement.Tag)
{
case FieldElement.TagValue.NamedField:
AmlParser.NamedField namedField = fieldElement.GetAsNamedField();
Node node = acpiNamespace.LookupNode(
new NodePath(false /*isAbsolute*/, 0, new string[] { namedField.nameSeg.data }),
currentPath);
node.Value = new FieldUnit(indexFieldRegion, bitIndex, namedField.bitWidth,
accessType, accessAttrib,
defIndexField.fieldFlags.lockRule,
defIndexField.fieldFlags.updateRule);
bitIndex += namedField.bitWidth;
break;
case FieldElement.TagValue.ReservedField:
AmlParser.ReservedField reservedField = fieldElement.GetAsReservedField();
bitIndex += reservedField.bitWidth;
break;
case FieldElement.TagValue.AccessField:
AmlParser.AccessField accessField = fieldElement.GetAsAccessField();
accessType = accessField.accessType;
accessAttrib = accessField.accessAttrib;
break;
default:
throw new LoadException("Unhandled alternative in switch over 'FieldElement'");
}
}
}
public IndexFieldOperationRegionAccessor(FieldUnit index, FieldUnit data)
{
this.index = index;
this.data = data;
}