public override void Emit(Stream stream)
{
Byte[] emitCode = new Byte[byteLength];
emitCode[0] = instruction;
UInt64 offset = memoryOp.Emit(emitCode, 1);
offset = op.Emit(emitCode, offset);
stream.Write(emitCode, 0, emitCode.Length);
}
public static UInt64 EmitJumpBIfEQ(byte[] byteCode, UInt64 offset, MemoryOp cnd1, Op cnd2, Op jmp)
{
byteCode[offset++] = Instructions.JumpBIfEQ;
offset = cnd1.Emit(byteCode, offset);
offset = cnd2.Emit(byteCode, offset);
return(jmp.Emit(byteCode, offset));
}
private void MoveTest(params MemAndValue[] t)
{
UInt64 offset;
memory.Reset();
//
// Generate Code
//
offset = 0;
for (int i = 0; i < t.Length; i++)
{
offset = ByteCode.EmitAssign(byteCode, offset, t[i].dst, t[i].src);
}
byteCode[offset++] = Instructions.Halt;
//
// Run Code
//
Assert.AreEqual(offset, InstructionProcessor.Execute(byteCode, 0, memory));
//
// Test Results
//
memory.Print(0, 16);
for (int i = 0; i < t.Length; i++)
{
MemoryOp dst = t[i].dst;
Op src = t[i].src;
Console.WriteLine("Asserting [{0}] EmitMem={1}, EmitVal={2}", i, dst, src);
Byte[] emitWriteCode = new Byte[dst.byteLength];
Byte[] emitReadCode = new Byte[src.byteLength];
dst.Emit(emitWriteCode, 0);
src.Emit(emitReadCode, 0);
offset = 0;
Memory.ReadOperandLogic emitWriteReadOperand = memory.ParseWriteOperandForReading(emitWriteCode, ref offset);
Assert.AreEqual((UInt64)emitWriteCode.Length, offset);
offset = 0;
Memory.ReadOperandLogic emitReadReadOperand = memory.ParseReadOperand(emitReadCode, ref offset);
Assert.AreEqual((UInt64)emitReadCode.Length, offset);
Assert.IsTrue(memory.TestEquals(emitWriteReadOperand, emitReadReadOperand));
}
}
public override UInt64 Emit(Byte[] byteCode, UInt64 offset)
{
byteCode[offset++] = instruction;
return(memoryOp.Emit(byteCode, offset));
}
public static UInt64 EmitDecrement(byte[] byteCode, UInt64 offset, MemoryOp var)
{
byteCode[offset++] = Instructions.Decrement;
return(var.Emit(byteCode, offset));
}
public static UInt64 EmitAssign(byte[] byteCode, UInt64 offset, MemoryOp dst, Op src)
{
byteCode[offset++] = Instructions.Move;
offset = dst.Emit(byteCode, offset);
return(src.Emit(byteCode, offset));
}