private static LLVMValueRef DeclareCxaVoidPointerRtti(
LLVMModuleBuilder ModuleBuilder, LLVMModuleRef LLVMModule)
{
var type = PrimitiveTypes.Void.MakePointerType(PointerKind.TransientPointer);
var result = ModuleBuilder.DeclareGlobal(ModuleBuilder.Declare(type), "_ZTIPv");
result.SetGlobalConstant(true);
return(result);
}
/// <summary>
/// Defines the global variable that backs a vtable.
/// </summary>
/// <param name="Module">The module to declare the global in.</param>
/// <param name="Type">The type that owns the vtable.</param>
/// <param name="VTableEntryImpls">
/// The list of virtual function pointers in the vtable.
/// </param>
/// <returns>A vtable global variable.</returns>
public static LLVMValueRef DefineVTableGlobal(
LLVMModuleBuilder Module,
IType Type,
LLVMValueRef[] VTableEntryImpls)
{
var fields = new LLVMValueRef[3];
fields[0] = ConstInt(Int64Type(), Module.GetTypeId(Type), false);
fields[1] = ConstInt(Int64Type(), Module.GetTypeIndex(Type), false);
fields[2] = ConstArray(
PointerType(Int8Type(), 0),
VTableEntryImpls);
var vtableContents = ConstStruct(fields, false);
var vtable = Module.DeclareGlobal(
vtableContents.TypeOf(),
Type.FullName.ToString() + ".vtable");
vtable.SetGlobalConstant(true);
vtable.SetLinkage(LLVMLinkage.LLVMInternalLinkage);
vtable.SetInitializer(vtableContents);
return(vtable);
}
