public IEnumerable <NasmInstruction> CompileInstructions()
{
int stackSize = StackEnd;
yield return(NasmInstruction.Call("sub", Param(Register.Get(RegisterName.RSP)), new LiteralParameter(stackSize.ToString())).WithComment("Allocate stack"));
yield return(NasmInstruction.Empty());
if (Parameters.Count >= 2)
{
yield return(Move(GetMemory(Parameters[1]), ParameterLocation(1)));
}
foreach (var instruction in Instructions.SelectMany((x, i) => CompileInstruction(i, x)))
{
yield return(instruction);
}
yield return(NasmInstruction.Label(".__exit").WithComment("Function exit/return label"));
yield return(NasmInstruction.Call("add", Param(Register.Get(RegisterName.RSP)), new LiteralParameter(stackSize.ToString())).WithComment("Return stack"));
yield return(NasmInstruction.Call(name: "ret"));
yield return(NasmInstruction.Empty());
}
private IEnumerable <NasmInstruction> CompileInstruction(int i, IInstruction instruction)
{
yield return(NasmInstruction.Comment(instruction.ToString()));
yield return(NasmInstruction.Comment("In = { " + string.Join(", ", RegisterAllocation.GetAllInAt(i)) + " }"));
foreach (var inst in instruction switch
{
UnaryComputationAssignment inst => CompileCore(inst),
BinaryComputationAssignment inst => CompileCore(inst),
ConditionalJump inst => CompileCore(inst),
UnconditionalJump inst => CompileCore(inst),
LabelInstruction inst => CompileCore(inst),
CallInstruction inst => CompileCore(i, inst),
ReturnInstruction inst => CompileCore(inst),
ParameterQueryAssignment inst => CompileCore(inst),
_ => throw new ArgumentException(nameof(instruction))
})
