50 lines
1.5 KiB
Swift
50 lines
1.5 KiB
Swift
//
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// Disassembly.swift
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// FruitMachine
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//
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// Created by Christopher Rohl on 7/22/17.
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// Copyright © 2017 Christopher Rohl. All rights reserved.
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//
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import Cocoa
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class Disassembly: NSObject {
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let instruction: CPUInstruction?
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let address: UInt16
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let data: [UInt8]
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init(instruction: CPUInstruction?, address: UInt16, data: [UInt8]) {
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self.instruction = instruction
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self.address = address
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self.data = data
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}
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}
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extension CPU {
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func disassemble(fromAddress: UInt16, length: UInt16) -> [Disassembly] {
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var disassembly: [Disassembly] = [Disassembly]()
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var currentAddress: UInt16 = fromAddress
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let endAddress: UInt16 = fromAddress + length
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while(currentAddress < endAddress) {
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let instruction = memoryInterface.readByte(offset: currentAddress)
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let operation = InstructionTable[instruction]
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var data = [UInt8]()
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if(operation != nil) {
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for index in 1...operation!.bytes {
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data.append(memoryInterface.readByte(offset:currentAddress + UInt16(index-1)))
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}
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disassembly.append(Disassembly(instruction: operation, address: currentAddress, data: data))
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currentAddress = currentAddress + UInt16(operation!.bytes)
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} else {
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currentAddress = currentAddress + 1
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}
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}
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return disassembly
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}
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}
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