/// <summary>
/// Import thunks are used to call a runtime-provided helper which fixes up an indirection cell in a particular
/// import section. Optionally they may also contain a relocation for a specific indirection cell to fix up.
/// </summary>
public ImportThunk(NodeFactory factory, ReadyToRunHelper helperId, ImportSectionNode containingImportSection, bool useVirtualCall)
{
_helperCell = factory.GetReadyToRunHelperCell(helperId);
_containingImportSection = containingImportSection;
if (useVirtualCall)
{
_thunkKind = Kind.VirtualStubDispatch;
}
else if (helperId == ReadyToRunHelper.GetString)
{
_thunkKind = Kind.Lazy;
}
else if (helperId == ReadyToRunHelper.DelayLoad_MethodCall ||
helperId == ReadyToRunHelper.DelayLoad_Helper ||
helperId == ReadyToRunHelper.DelayLoad_Helper_Obj ||
helperId == ReadyToRunHelper.DelayLoad_Helper_ObjObj)
{
_thunkKind = Kind.DelayLoadHelper;
}
else
{
_thunkKind = Kind.Eager;
}
}
public DelayLoadHelperImport(
NodeFactory factory,
ImportSectionNode importSectionNode,
ReadyToRunHelper helper,
Signature instanceSignature,
bool useVirtualCall = false,
MethodDesc callingMethod = null)
: base(importSectionNode, instanceSignature, callingMethod)
{
_helper = helper;
_useVirtualCall = useVirtualCall;
_delayLoadHelper = new ImportThunk(helper, factory, this, useVirtualCall);
}
public DelayLoadHelperImport(
ReadyToRunCodegenNodeFactory factory,
ImportSectionNode importSectionNode,
ReadyToRunHelper helper,
Signature instanceSignature,
bool useVirtualCall = false,
string callSite = null)
: base(importSectionNode, instanceSignature, callSite)
{
_helper = helper;
_useVirtualCall = useVirtualCall;
_delayLoadHelper = new ImportThunk(helper, factory, this, useVirtualCall);
}
public DelayLoadHelperMethodImport(
ReadyToRunCodegenNodeFactory factory,
ImportSectionNode importSectionNode,
ReadyToRunHelper helper,
MethodDesc methodDesc,
Signature instanceSignature,
string callSite = null)
: base(factory, importSectionNode, helper, instanceSignature, callSite)
{
_helper = helper;
_methodDesc = methodDesc;
_delayLoadHelper = new ImportThunk(helper, factory, this);
}
public DelayLoadHelperMethodImport(
NodeFactory factory,
ImportSectionNode importSectionNode,
ReadyToRunHelper helper,
MethodWithToken method,
bool useVirtualCall,
bool useInstantiatingStub,
Signature instanceSignature,
MethodDesc callingMethod = null)
: base(factory, importSectionNode, helper, instanceSignature, useVirtualCall, callingMethod)
{
_method = method;
_useInstantiatingStub = useInstantiatingStub;
}
public DelayLoadHelperMethodImport(
ReadyToRunCodegenNodeFactory factory,
ImportSectionNode importSectionNode,
ReadyToRunHelper helper,
MethodWithToken method,
bool useVirtualCall,
bool useInstantiatingStub,
Signature instanceSignature,
SignatureContext signatureContext,
string callSite = null)
: base(factory, importSectionNode, helper, instanceSignature, useVirtualCall, callSite)
{
_method = method;
_useInstantiatingStub = useInstantiatingStub;
_signatureContext = signatureContext;
}
public GCRefMapNode(ImportSectionNode importSection)
{
_importSection = importSection;
_methods = new List <IMethodNode>();
}
public StringImport(ImportSectionNode table, ModuleToken token, SignatureContext signatureContext)
: base(table, new StringImportSignature(token, signatureContext))
{
_token = token;
}
public Import(ImportSectionNode tableNode, Signature importSignature, string callSite = null)
{
Table = tableNode;
CallSite = callSite;
ImportSignature = new RvaEmbeddedPointerIndirectionNode <Signature>(importSignature, callSite);
}
public Import(ImportSectionNode tableNode, Signature importSignature, MethodDesc callingMethod = null)
{
Table = tableNode;
CallingMethod = callingMethod;
ImportSignature = new SignatureEmbeddedPointerIndirectionNode(this, importSignature);
}
public PrecodeHelperImport(ImportSectionNode section, Signature signature)
: base(section, signature)
{
}
public Import(ImportSectionNode tableNode, Signature importSignature, string callSite = null)
{
Table = tableNode;
CallSite = callSite;
ImportSignature = new SignatureEmbeddedPointerIndirectionNode(this, importSignature);
}
public StringImport(ImportSectionNode table, ModuleToken token)
: base(table, new StringImportSignature(token))
{
_token = token;
}
public GCRefMapNode(ImportSectionNode importSection)
{
_importSection = importSection;
_methods = new List <MethodWithGCInfo>();
}
