private CorInfoIntrinsics asCorInfoIntrinsic(IntrinsicMethodKind methodKind)
{
switch (methodKind)
{
case IntrinsicMethodKind.RuntimeHelpersInitializeArray:
return CorInfoIntrinsics.CORINFO_INTRINSIC_InitializeArray;
default:
return CorInfoIntrinsics.CORINFO_INTRINSIC_Illegal;
}
}
private void ImportIntrinsicCall(IntrinsicMethodKind intrinsicClassification)
{
switch (intrinsicClassification)
{
case IntrinsicMethodKind.RuntimeHelpersInitializeArray:
{
var fieldSlot = Pop();
var arraySlot = Pop();
var fieldDesc = (TypeSystem.Ecma.EcmaField)fieldSlot.Value.Aux;
int addr = fieldDesc.MetadataReader.GetFieldDefinition(fieldDesc.Handle).GetRelativeVirtualAddress();
var memBlock = fieldDesc.Module.PEReader.GetSectionData(addr).GetContent();
var fieldType = (TypeSystem.Ecma.EcmaType)fieldDesc.FieldType;
int size = fieldType.MetadataReader.GetTypeDefinition(fieldType.Handle).GetLayout().Size;
if (size == 0)
throw new NotImplementedException();
// TODO: Need to do more for arches with different endianness?
var preinitDataHolder = NewTempName();
Append("static const char ");
Append(preinitDataHolder);
Append("[] = { ");
for (int i = 0; i < size; i++)
{
if (i != 0)
Append(", ");
Append(String.Format("0x{0:X}", memBlock[i]));
}
Append(" }");
Finish();
Append("memcpy((char*)");
Append(arraySlot.Value.Name);
Append(" + ARRAY_BASE, ");
Append(preinitDataHolder);
Append(", ");
Append(size.ToString());
Append(")");
Finish();
break;
}
default: throw new NotImplementedException();
}
}
