/// <summary>
/// Initializes the type.
/// </summary>
protected virtual void InitializeType()
{
if (Method.IsSpecialName && Method.IsRTSpecialName && Method.IsStatic && Method.Name == ".cctor")
{
typeInitializer = Compiler.PostCompilePipeline.FindFirst <TypeInitializerSchedulerStage>();
if (typeInitializer == null)
{
return;
}
typeInitializer.Schedule(Method);
}
}
/// <summary>
/// Performs stage specific processing on the compiler context.
/// </summary>
/// <param name="compiler">The compiler context to perform processing in.</param>
public void Run(AssemblyCompiler compiler)
{
if (compiler == null)
{
throw new ArgumentNullException(@"compiler");
}
IAssemblyLinker linker = compiler.Pipeline.Find <IAssemblyLinker>();
Debug.Assert(linker != null, @"No linker??");
if (!secondStage)
{
IntPtr entryPoint = WriteMultibootEntryPoint(linker);
WriteMultibootHeader(compiler, linker, entryPoint);
secondStage = true;
}
else
{
TypeInitializerSchedulerStage typeInitializerSchedulerStage = compiler.Pipeline.Find <TypeInitializerSchedulerStage>();
SigType I4 = new SigType(CilElementType.I4);
RegisterOperand ecx = new RegisterOperand(I4, GeneralPurposeRegister.ECX);
RegisterOperand eax = new RegisterOperand(I4, GeneralPurposeRegister.EAX);
RegisterOperand ebx = new RegisterOperand(I4, GeneralPurposeRegister.EBX);
InstructionSet instructionSet = new InstructionSet(16);
Context ctx = new Context(instructionSet, -1);
ctx.AppendInstruction(CPUx86.Instruction.MovInstruction, ecx, new ConstantOperand(I4, 0x200000));
ctx.AppendInstruction(CPUx86.Instruction.MovInstruction, new MemoryOperand(I4, ecx.Register, new IntPtr(0x0)), eax);
ctx.AppendInstruction(CPUx86.Instruction.MovInstruction, new MemoryOperand(I4, ecx.Register, new IntPtr(0x4)), ebx);
ctx.AppendInstruction(IR.Instruction.CallInstruction);
ctx.InvokeTarget = typeInitializerSchedulerStage.Method;
ctx.AppendInstruction(CPUx86.Instruction.NopInstruction);
ctx.AppendInstruction(CPUx86.Instruction.NopInstruction);
ctx.AppendInstruction(CPUx86.Instruction.RetInstruction);
CompilerGeneratedMethod method = LinkTimeCodeGenerator.Compile(compiler, @"MultibootInit", instructionSet);
linker.EntryPoint = linker.GetSymbol(method);
}
}
