1185 lines
35 KiB
TypeScript
1185 lines
35 KiB
TypeScript
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import { RAM, RasterVideo, dumpRAM, AnimationTimer, setKeyboardFromMap, padBytes } from "./emu";
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import { hex, printFlags, invertMap } from "./util";
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import { CodeAnalyzer } from "./analysis";
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import { disassemble6502 } from "./cpu/disasm6502";
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import { disassembleZ80 } from "./cpu/disasmz80";
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declare var buildZ80, jt, CPU6809;
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export interface OpcodeMetadata {
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minCycles: number;
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maxCycles: number;
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insnlength: number;
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opcode: number;
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}
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export interface CpuState {
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PC:number;
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EPC?:number; // effective PC (for bankswitching)
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T?:number;
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o?:number;/*opcode*/
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SP?:number
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/*
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A:number, X:number, Y:number, SP:number, R:boolean,
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N,V,D,Z,C:boolean*/
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};
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export interface EmuState {
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c?:CpuState, // CPU state
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b?:Uint8Array|number[], // RAM (TODO: not for vcs, support Uint8Array)
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o?:{}, // verilog
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T?:number, // verilog
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};
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export interface EmuControlsState {
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}
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export type DisasmLine = {
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line:string,
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nbytes:number,
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isaddr:boolean
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};
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export type SymbolMap = {[ident:string]:number};
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export type AddrSymbolMap = {[address:number]:string};
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export class DebugSymbols {
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symbolmap : SymbolMap; // symbol -> address
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addr2symbol : AddrSymbolMap; // address -> symbol
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constructor(symbolmap : SymbolMap) {
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this.symbolmap = symbolmap;
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this.addr2symbol = invertMap(symbolmap);
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// TODO: shouldn't be necc.
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if (!this.addr2symbol[0x0]) this.addr2symbol[0x0] = '__START__'; // needed for ...
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this.addr2symbol[0x10000] = '__END__'; // ... dump memory to work
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}
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}
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export interface Platform {
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start() : void;
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reset() : void;
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isRunning() : boolean;
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getToolForFilename(s:string) : string;
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getDefaultExtension() : string;
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getPresets() : Preset[];
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pause() : void;
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resume() : void;
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loadROM(title:string, rom:any); // TODO: Uint8Array
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loadBIOS?(title:string, rom:Uint8Array);
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loadState?(state : EmuState) : void;
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saveState?() : EmuState;
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loadControlsState?(state : EmuControlsState) : void;
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saveControlsState?() : EmuControlsState;
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inspect?(ident:string) : string;
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disassemble?(addr:number, readfn:(addr:number)=>number) : DisasmLine;
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readAddress?(addr:number) : number;
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readVRAMAddress?(addr:number) : number;
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setFrameRate?(fps:number) : void;
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getFrameRate?() : number;
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setupDebug?(callback : BreakpointCallback) : void;
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clearDebug?() : void;
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step?() : void;
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runToVsync?() : void;
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runToPC?(pc:number) : void;
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runUntilReturn?() : void;
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stepBack?() : void;
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runEval?(evalfunc : DebugEvalCondition) : void;
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runToFrameClock?(clock : number) : void;
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getOpcodeMetadata?(opcode:number, offset:number) : OpcodeMetadata; //TODO
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getSP?() : number;
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getOriginPC?() : number;
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newCodeAnalyzer?() : CodeAnalyzer;
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getDebugCategories?() : string[];
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getDebugInfo?(category:string, state:EmuState) : string;
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setRecorder?(recorder : EmuRecorder) : void;
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advance?(novideo? : boolean) : void;
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showHelp?(tool:string, ident?:string) : void;
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resize?() : void;
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startProfiling?() : ProfilerOutput;
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stopProfiling?() : void;
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getRasterScanline?() : number;
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debugSymbols? : DebugSymbols;
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}
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export interface Preset {
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id : string;
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name : string;
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chapter? : number;
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title? : string;
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}
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export interface MemoryBus {
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read : (address:number) => number;
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write : (address:number, value:number) => void;
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}
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export type DebugCondition = () => boolean;
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export type DebugEvalCondition = (c:CpuState) => boolean;
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export type BreakpointCallback = (s:EmuState) => void;
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// for composite breakpoints w/ single debug function
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export class BreakpointList {
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id2bp : {[id:string] : Breakpoint} = {};
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getDebugCondition() : DebugCondition {
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if (Object.keys(this.id2bp).length == 0) {
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return null; // no breakpoints
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} else {
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// evaluate all breakpoints
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return () => {
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var result = false;
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for (var id in this.id2bp)
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if (this.id2bp[id].cond())
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result = true;
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return result;
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};
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}
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}
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}
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export type Breakpoint = {cond:DebugCondition};
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export interface EmuRecorder {
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frameRequested() : boolean;
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recordFrame(state : EmuState);
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}
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export interface ProfilerScanline {
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start,end : number; // start/end frameindex
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}
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export interface ProfilerFrame {
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iptab : Uint32Array; // array of IPs
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lines : ProfilerScanline[];
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}
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export interface ProfilerOutput {
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frame : ProfilerFrame;
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}
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/////
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export abstract class BasePlatform {
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recorder : EmuRecorder = null;
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debugSymbols : DebugSymbols;
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abstract loadState(state : EmuState) : void;
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abstract saveState() : EmuState;
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abstract pause() : void;
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abstract resume() : void;
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abstract advance(novideo? : boolean) : void;
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setRecorder(recorder : EmuRecorder) : void {
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this.recorder = recorder;
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}
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updateRecorder() {
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// are we recording and do we need to save a frame?
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if (this.recorder && (<Platform><any>this).isRunning() && this.recorder.frameRequested()) {
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this.recorder.recordFrame(this.saveState());
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}
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}
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}
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export abstract class BaseDebugPlatform extends BasePlatform {
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onBreakpointHit : BreakpointCallback;
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debugCallback : DebugCondition;
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debugSavedState : EmuState = null;
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debugBreakState : EmuState = null;
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debugTargetClock : number = 0;
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debugClock : number = 0;
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breakpoints : BreakpointList = new BreakpointList();
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abstract getCPUState() : CpuState;
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abstract readAddress(addr:number) : number;
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setBreakpoint(id : string, cond : DebugCondition) {
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if (cond) {
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this.breakpoints.id2bp[id] = {cond:cond};
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this.restartDebugging();
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} else {
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this.clearBreakpoint(id);
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}
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}
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clearBreakpoint(id : string) {
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delete this.breakpoints.id2bp[id];
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}
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startProfiling() : ProfilerOutput {
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var frame = null;
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var output = {frame:null};
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var i = 0;
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var lastsl = 9999;
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var start = 0;
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this.setBreakpoint('profile', () => {
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var sl = (this as any).getRasterScanline();
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if (sl != lastsl) {
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if (frame) {
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frame.lines.push({start:start,end:i-1});
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}
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if (sl < lastsl) {
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output.frame = frame;
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frame = {iptab:new Uint32Array(0x8000), lines:[]}; // TODO: const
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i = 0;
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}
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start = i;
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lastsl = sl;
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}
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var c = this.getCPUState();
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frame.iptab[i++] = c.EPC || c.PC;
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return false; // profile forever
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});
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return output;
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}
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stopProfiling() {
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this.clearBreakpoint('profile');
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}
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getDebugCallback() : DebugCondition {
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return this.breakpoints.getDebugCondition();
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}
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setupDebug(callback : BreakpointCallback) : void {
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this.onBreakpointHit = callback;
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}
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clearDebug() {
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this.debugSavedState = null;
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this.debugBreakState = null;
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this.debugTargetClock = -1;
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this.debugClock = 0;
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this.onBreakpointHit = null;
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this.clearBreakpoint('debug');
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}
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setDebugCondition(debugCond : DebugCondition) {
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this.setBreakpoint('debug', debugCond);
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}
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restartDebugging() {
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if (this.debugSavedState) {
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this.loadState(this.debugSavedState);
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} else {
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this.debugSavedState = this.saveState();
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}
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this.debugClock = 0;
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this.debugCallback = this.getDebugCallback();
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this.debugBreakState = null;
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this.resume();
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}
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preFrame() {
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this.updateRecorder();
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}
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postFrame() {
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}
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nextFrame(novideo : boolean) {
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this.preFrame();
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this.advance(novideo);
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this.postFrame();
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}
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}
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////// 6502
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export function getToolForFilename_6502(fn:string) : string {
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if (fn.endsWith(".pla")) return "plasm";
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if (fn.endsWith(".c")) return "cc65";
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if (fn.endsWith(".h")) return "cc65";
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if (fn.endsWith(".s")) return "ca65";
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if (fn.endsWith(".ca65")) return "ca65";
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if (fn.endsWith(".dasm")) return "dasm";
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if (fn.endsWith(".acme")) return "acme";
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return "dasm"; // .a
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}
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// TODO: can merge w/ Z80?
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export abstract class Base6502Platform extends BaseDebugPlatform {
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// some platforms store their PC one byte before or after the first opcode
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// so we correct when saving and loading from state
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debugPCDelta = -1;
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fixPC(c) { c.PC = (c.PC + this.debugPCDelta) & 0xffff; return c; }
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unfixPC(c) { c.PC = (c.PC - this.debugPCDelta) & 0xffff; return c;}
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evalDebugCondition() {
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if (this.debugCallback && !this.debugBreakState) {
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this.debugCallback();
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}
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}
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postFrame() {
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if (this.debugCallback) {
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if (this.debugBreakState) {
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// reload debug state at end of frame after breakpoint
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this.loadState(this.debugBreakState);
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} else {
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// save state every frame and rewind debug clocks
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this.debugSavedState = this.saveState();
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this.debugTargetClock -= this.debugClock;
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this.debugClock = 0;
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}
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}
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}
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breakpointHit(targetClock : number) {
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this.debugTargetClock = targetClock;
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this.debugBreakState = this.saveState();
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console.log("Breakpoint at clk", this.debugClock, "PC", this.debugBreakState.c.PC.toString(16));
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this.pause();
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if (this.onBreakpointHit) {
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this.onBreakpointHit(this.debugBreakState);
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}
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}
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runEval(evalfunc : DebugEvalCondition) {
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this.setDebugCondition( () => {
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if (this.debugClock++ > this.debugTargetClock) {
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var cpuState = this.getCPUState();
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if (evalfunc(cpuState)) {
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this.breakpointHit(this.debugClock-1);
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return true;
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} else {
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return false;
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}
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}
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});
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}
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runToFrameClock?(clock : number) : void {
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this.restartDebugging();
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this.debugTargetClock = clock;
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this.setDebugCondition( () => {
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if (this.debugClock++ > this.debugTargetClock) {
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this.breakpointHit(this.debugClock-1);
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return true;
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}
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});
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}
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step() {
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var previousPC = -1;
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this.setDebugCondition( () => {
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//console.log(this.debugClock, this.debugTargetClock, this.getCPUState().PC, this.getCPUState());
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if (this.debugClock++ >= this.debugTargetClock) {
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var thisState = this.getCPUState();
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if (previousPC < 0) {
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previousPC = thisState.PC;
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} else {
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// doesn't work w/ endless loops
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if (thisState.PC != previousPC && thisState.T == 0) {
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this.breakpointHit(this.debugClock-1);
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return true;
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}
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}
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}
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return false;
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});
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}
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stepBack() {
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var prevState;
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var prevClock;
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this.setDebugCondition( () => {
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if (this.debugClock++ >= this.debugTargetClock && prevState) {
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this.loadState(prevState);
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this.breakpointHit(prevClock-1);
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return true;
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} else if (this.debugClock > this.debugTargetClock-10 && this.debugClock <= this.debugTargetClock+this.debugPCDelta) { // TODO: why this works?
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if (this.getCPUState().T == 0) {
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prevState = this.saveState();
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prevClock = this.debugClock;
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}
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}
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return false;
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});
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}
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newCPU(membus : MemoryBus) {
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var cpu = new jt.M6502();
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cpu.connectBus(membus);
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return cpu;
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}
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getOpcodeMetadata(opcode, offset) {
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return getOpcodeMetadata_6502(opcode, offset);
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}
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getOriginPC() : number {
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return (this.readAddress(0xfffc) | (this.readAddress(0xfffd) << 8)) & 0xffff;
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}
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runUntilReturn() {
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var depth = 1;
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this.runEval( (c:CpuState) => {
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if (depth <= 0 && c.T == 0)
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return true;
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if (c.o == 0x20)
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depth++;
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else if (c.o == 0x60 || c.o == 0x40)
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--depth;
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return false;
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});
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}
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disassemble(pc:number, read:(addr:number)=>number) : DisasmLine {
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return disassemble6502(pc, read(pc), read(pc+1), read(pc+2));
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}
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getToolForFilename = getToolForFilename_6502;
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getDefaultExtension() { return ".a"; };
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getDebugCategories() {
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return ['CPU','ZPRAM','Stack'];
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}
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getDebugInfo(category:string, state:EmuState) : string {
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switch (category) {
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case 'CPU': return cpuStateToLongString_6502(state.c);
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case 'ZPRAM': return dumpRAM(state.b, 0x0, 0x100);
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case 'Stack': return dumpStackToString(<Platform><any>this, state.b, 0x100, 0x1ff, 0x100+state.c.SP, 0x20);
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}
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}
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}
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export function cpuStateToLongString_6502(c) : string {
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function decodeFlags(c) {
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var s = "";
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s += c.N ? " N" : " -";
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s += c.V ? " V" : " -";
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s += c.D ? " D" : " -";
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s += c.Z ? " Z" : " -";
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s += c.C ? " C" : " -";
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s += c.I ? " I" : " -";
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return s;
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}
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return "PC " + hex(c.PC,4) + " " + decodeFlags(c) + "\n"
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+ " A " + hex(c.A) + " " + (c.R ? "" : "BUSY") + "\n"
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+ " X " + hex(c.X) + "\n"
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+ " Y " + hex(c.Y) + " " + "SP " + hex(c.SP) + "\n";
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}
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var OPMETA_6502 = {
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cycletime: [
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7, 6, 0, 8, 3, 3, 5, 5, 3, 2, 2, 2, 4, 4, 6, 6, 2, 5, 0, 8, 4, 4, 6, 6, 2, 4, 0, 7, 4, 4, 7, 7, 6, 6, 0, 8, 3, 3, 5, 5, 4, 2, 2, 2, 4, 4, 6, 6, 2, 5, 0, 8, 4, 4, 6, 6, 2, 4, 0, 7, 4, 4, 7, 7, 6, 6, 0, 8, 3, 3, 5, 5, 3, 2, 2, 2, 3, 4, 6, 6, 2, 5, 0, 8, 4, 4, 6, 6, 2, 4, 0, 7, 4, 4, 7, 7, 6, 6, 0, 8, 3, 3, 5, 5, 4, 2, 2, 2, 5, 4, 6, 6, 2, 5, 0, 8, 4, 4, 6, 6, 2, 4, 0, 7, 4, 4, 7, 7, 0, 6, 0, 6, 3, 3, 3, 3, 2, 0, 2, 0, 4, 4, 4, 4, 2, 6, 0, 0, 4, 4, 4, 4, 2, 5, 2, 0, 0, 5, 0, 0, 2, 6, 2, 6, 3, 3, 3, 3, 2, 2, 2, 0, 4, 4, 4, 4, 2, 5, 0, 5, 4, 4, 4, 4, 2, 4, 2, 0, 4, 4, 4, 4, 2, 6, 0, 8, 3, 3, 5, 5, 2, 2, 2, 2, 4, 4, 3, 6, 2, 5, 0, 8, 4, 4, 6, 6, 2, 4, 0, 7, 4, 4, 7, 7, 2, 6, 0, 8, 3, 3, 5, 5, 2, 2, 2, 0, 4, 4, 6, 6, 2, 5, 0, 8, 4, 4, 6, 6, 2, 4, 0, 7, 4, 4, 7, 7
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],
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extracycles: [
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0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1
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],
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insnlengths: [
|
|
1, 2, 0, 2, 2, 2, 2, 2, 1, 2, 1, 2, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 0, 3, 3, 3, 3, 3, 3, 2, 0, 2, 2, 2, 2, 2, 1, 2, 1, 2, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 0, 3, 3, 3, 3, 3, 1, 2, 0, 2, 2, 2, 2, 2, 1, 2, 1, 2, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 0, 3, 3, 3, 3, 3, 1, 2, 0, 2, 2, 2, 2, 2, 1, 2, 1, 2, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 0, 3, 3, 3, 3, 3, 0, 2, 0, 2, 2, 2, 2, 2, 1, 0, 1, 0, 3, 3, 3, 3, 2, 2, 0, 0, 2, 2, 2, 3, 1, 3, 1, 0, 0, 3, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 0, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 1, 0, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 2, 1, 2, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 0, 3, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 2, 1, 0, 3, 3, 3, 3, 2, 2, 0, 2, 2, 2, 2, 2, 1, 3, 0, 3, 3, 3, 3, 3
|
|
],
|
|
validinsns: [
|
|
1, 2, 0, 0, 0, 2, 2, 0, 1, 2, 1, 0, 0, 3, 3, 0, 2, 2, 0, 0, 0, 2, 2, 0, 1, 3, 0, 0, 0, 3, 3, 0, 3, 2, 0, 0, 2, 2, 2, 0, 1, 2, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 0, 2, 2, 0, 1, 3, 0, 0, 0, 3, 3, 0, 1, 2, 0, 0, 0, 2, 2, 0, 1, 2, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 0, 2, 2, 0, 1, 3, 0, 0, 0, 3, 3, 0, 1, 2, 0, 0, 0, 2, 2, 0, 1, 2, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 0, 2, 2, 0, 1, 3, 0, 0, 0, 3, 3, 0, 0, 2, 0, 0, 2, 2, 2, 0, 1, 0, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 2, 2, 2, 0, 1, 3, 1, 0, 0, 3, 0, 0, 2, 2, 2, 0, 2, 2, 2, 0, 1, 2, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 2, 2, 2, 0, 1, 3, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 2, 2, 2, 0, 1, 2, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 0, 2, 2, 0, 1, 3, 0, 0, 0, 3, 3, 0, 2, 2, 0, 0, 2, 2, 2, 0, 1, 2, 1, 0, 3, 3, 3, 0, 2, 2, 0, 0, 0, 2, 2, 0, 1, 3, 0, 0, 0, 3, 3, 0
|
|
],
|
|
}
|
|
|
|
export function getOpcodeMetadata_6502(opcode, address) {
|
|
// TODO: more intelligent maximum cycles
|
|
// TODO: must always be new object, b/c we might modify it
|
|
return {
|
|
opcode:opcode,
|
|
minCycles:OPMETA_6502.cycletime[opcode],
|
|
maxCycles:OPMETA_6502.cycletime[opcode] + OPMETA_6502.extracycles[opcode],
|
|
insnlength:OPMETA_6502.insnlengths[opcode]
|
|
};
|
|
}
|
|
|
|
////// Z80
|
|
|
|
export function cpuStateToLongString_Z80(c) {
|
|
function decodeFlags(flags) {
|
|
return printFlags(flags, ["S","Z",,"H",,"V","N","C"], true);
|
|
}
|
|
return "PC " + hex(c.PC,4) + " " + decodeFlags(c.AF) + "\n"
|
|
+ "SP " + hex(c.SP,4) + " IR " + hex(c.IR,4) + "\n"
|
|
+ "IX " + hex(c.IX,4) + " IY " + hex(c.IY,4) + "\n"
|
|
+ "AF " + hex(c.AF,4) + " BC " + hex(c.BC,4) + "\n"
|
|
+ "DE " + hex(c.DE,4) + " HL " + hex(c.HL,4) + "\n"
|
|
;
|
|
}
|
|
|
|
export function BusProbe(bus : MemoryBus) {
|
|
var active = false;
|
|
var callback;
|
|
this.activate = function(_callback) {
|
|
active = true;
|
|
callback = _callback;
|
|
}
|
|
this.deactivate = function() {
|
|
active = false;
|
|
callback = null;
|
|
}
|
|
this.read = function(a) {
|
|
if (active) {
|
|
callback(a);
|
|
}
|
|
return bus.read(a);
|
|
}
|
|
this.write = function(a,v) {
|
|
if (active) {
|
|
callback(a,v);
|
|
}
|
|
bus.write(a,v);
|
|
}
|
|
}
|
|
|
|
export abstract class BaseZ80Platform extends BaseDebugPlatform {
|
|
|
|
_cpu;
|
|
probe;
|
|
|
|
newCPU(membus : MemoryBus, iobus : MemoryBus) {
|
|
this.probe = new BusProbe(membus);
|
|
var z80opts = {};
|
|
this._cpu = buildZ80(z80opts)({
|
|
display: {},
|
|
memory: this.probe,
|
|
ioBus: iobus
|
|
});
|
|
return this._cpu;
|
|
}
|
|
|
|
getProbe() { return this.probe; }
|
|
getPC() { return this._cpu.getPC(); }
|
|
getSP() { return this._cpu.getSP(); }
|
|
|
|
// TODO: refactor other parts into here
|
|
runCPU(cpu, cycles:number) {
|
|
this._cpu = cpu; // TODO?
|
|
if (this.wasBreakpointHit())
|
|
return 0;
|
|
var debugCond = this.getDebugCallback();
|
|
var targetTstates = cpu.getTstates() + cycles;
|
|
try {
|
|
if (debugCond) { // || trace) {
|
|
while (cpu.getTstates() < targetTstates) {
|
|
if (debugCond && debugCond()) {
|
|
debugCond = null;
|
|
break;
|
|
}
|
|
cpu.runFrame(cpu.getTstates() + 1);
|
|
}
|
|
} else {
|
|
cpu.runFrame(targetTstates);
|
|
}
|
|
} catch (e) {
|
|
// TODO: show alert w/ error msg
|
|
console.log(e);
|
|
this.breakpointHit(cpu.getTstates());
|
|
}
|
|
return cpu.getTstates() - targetTstates;
|
|
}
|
|
requestInterrupt(cpu, data) {
|
|
if (!this.wasBreakpointHit())
|
|
cpu.requestInterrupt(data);
|
|
}
|
|
postFrame() {
|
|
if (this.debugCallback) {
|
|
if (this.debugBreakState) {
|
|
// if breakpoint, reload debug state after frame
|
|
this.loadState(this.debugBreakState);
|
|
} else {
|
|
// reset debug target clocks
|
|
this.debugSavedState = this.saveState();
|
|
if (this.debugTargetClock > 0)
|
|
this.debugTargetClock -= this.debugSavedState.c.T;
|
|
this.debugSavedState.c.T = 0;
|
|
this.loadState(this.debugSavedState);
|
|
}
|
|
}
|
|
}
|
|
breakpointHit(targetClock : number) {
|
|
this.debugTargetClock = targetClock;
|
|
this.debugBreakState = this.saveState();
|
|
console.log("Breakpoint at clk", this.debugBreakState.c.T, "PC", this.debugBreakState.c.PC.toString(16));
|
|
this.pause();
|
|
if (this.onBreakpointHit) {
|
|
this.onBreakpointHit(this.debugBreakState);
|
|
}
|
|
}
|
|
wasBreakpointHit() : boolean {
|
|
return this.debugBreakState != null;
|
|
}
|
|
// TODO: lower bound of clock value
|
|
step() {
|
|
this.setDebugCondition( () => {
|
|
var cpuState = this.getCPUState();
|
|
if (cpuState.T > this.debugTargetClock) {
|
|
this.breakpointHit(cpuState.T);
|
|
return true;
|
|
}
|
|
return false;
|
|
});
|
|
}
|
|
stepBack() {
|
|
var prevState;
|
|
var prevClock;
|
|
this.setDebugCondition( () => {
|
|
var cpuState = this.getCPUState();
|
|
var debugClock = cpuState.T;
|
|
if (debugClock >= this.debugTargetClock && prevState) {
|
|
this.loadState(prevState);
|
|
this.breakpointHit(prevClock);
|
|
return true;
|
|
} else if (debugClock > this.debugTargetClock-20 && debugClock < this.debugTargetClock) {
|
|
prevState = this.saveState();
|
|
prevClock = debugClock;
|
|
}
|
|
return false;
|
|
});
|
|
}
|
|
runEval(evalfunc : DebugEvalCondition) {
|
|
this.setDebugCondition( () => {
|
|
var cpuState = this.getCPUState();
|
|
if (cpuState.T > this.debugTargetClock) {
|
|
if (evalfunc(cpuState)) {
|
|
this.breakpointHit(cpuState.T);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
});
|
|
}
|
|
runUntilReturn() {
|
|
var depth = 1;
|
|
this.runEval( (c) => {
|
|
if (depth <= 0)
|
|
return true;
|
|
var op = this.readAddress(c.PC);
|
|
if (op == 0xcd) // CALL
|
|
depth++;
|
|
else if (op == 0xc0 || op == 0xc8 || op == 0xc9 || op == 0xd0) // RET (TODO?)
|
|
--depth;
|
|
return false;
|
|
});
|
|
}
|
|
runToVsync() {
|
|
this.runEval((c) => { return c['intp']; });
|
|
}
|
|
getToolForFilename = getToolForFilename_z80;
|
|
getDefaultExtension() { return ".c"; };
|
|
// TODO
|
|
//this.getOpcodeMetadata = function() { }
|
|
|
|
getDebugCategories() {
|
|
return ['CPU','Stack'];
|
|
}
|
|
getDebugInfo(category:string, state:EmuState) : string {
|
|
switch (category) {
|
|
case 'CPU': return cpuStateToLongString_Z80(state.c);
|
|
case 'Stack': {
|
|
var sp = (state.c.SP-1) & 0xffff;
|
|
var start = sp & 0xff00;
|
|
var end = start + 0xff;
|
|
if (sp == 0) sp = 0x10000;
|
|
console.log(sp,start,end);
|
|
return dumpStackToString(<Platform><any>this, [], start, end, sp, 0xcd);
|
|
}
|
|
}
|
|
}
|
|
disassemble(pc:number, read:(addr:number)=>number) : DisasmLine {
|
|
return disassembleZ80(pc, read(pc), read(pc+1), read(pc+2), read(pc+3));
|
|
}
|
|
}
|
|
|
|
export function getToolForFilename_z80(fn) : string {
|
|
if (fn.endsWith(".c")) return "sdcc";
|
|
if (fn.endsWith(".h")) return "sdcc";
|
|
if (fn.endsWith(".s")) return "sdasz80";
|
|
if (fn.endsWith(".ns")) return "naken";
|
|
if (fn.endsWith(".scc")) return "sccz80";
|
|
if (fn.endsWith(".z")) return "zmac";
|
|
return "zmac";
|
|
}
|
|
|
|
////// 6809
|
|
|
|
export function cpuStateToLongString_6809(c) {
|
|
function decodeFlags(flags) {
|
|
return printFlags(flags, ["E","F","H","I", "N","Z","V","C"], true);
|
|
}
|
|
return "PC " + hex(c.PC,4) + " " + decodeFlags(c.CC) + "\n"
|
|
+ "SP " + hex(c.SP,4) + "\n"
|
|
+ " A " + hex(c.A,2) + "\n"
|
|
+ " B " + hex(c.B,2) + "\n"
|
|
+ " X " + hex(c.X,4) + "\n"
|
|
+ " Y " + hex(c.Y,4) + "\n"
|
|
+ " U " + hex(c.U,4) + "\n"
|
|
;
|
|
}
|
|
|
|
export abstract class Base6809Platform extends BaseZ80Platform {
|
|
|
|
newCPU(membus : MemoryBus) {
|
|
var cpu = new CPU6809();
|
|
cpu.init(membus.write, membus.read, 0);
|
|
return cpu;
|
|
}
|
|
|
|
runUntilReturn() {
|
|
var depth = 1;
|
|
this.runEval((c:CpuState) => {
|
|
if (depth <= 0)
|
|
return true;
|
|
var op = this.readAddress(c.PC);
|
|
// TODO: 6809 opcodes
|
|
if (op == 0x9d || op == 0xad || op == 0xbd) // CALL
|
|
depth++;
|
|
else if (op == 0x3b || op == 0x39) // RET
|
|
--depth;
|
|
return false;
|
|
});
|
|
}
|
|
|
|
cpuStateToLongString(c:CpuState) {
|
|
return cpuStateToLongString_6809(c);
|
|
}
|
|
disassemble(pc:number, read:(addr:number)=>number) : DisasmLine {
|
|
// TODO: don't create new CPU
|
|
return new CPU6809().disasm(read(pc), read(pc+1), read(pc+2), read(pc+3), read(pc+4), pc);
|
|
}
|
|
getDefaultExtension() : string { return ".asm"; };
|
|
//this.getOpcodeMetadata = function() { }
|
|
getToolForFilename = () => { return "xasm6809"; }
|
|
getDebugCategories() {
|
|
return ['CPU','Stack'];
|
|
}
|
|
getDebugInfo(category:string, state:EmuState) : string {
|
|
switch (category) {
|
|
case 'CPU': return cpuStateToLongString_6809(state.c);
|
|
default: return super.getDebugInfo(category, state);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// MAME SUPPORT
|
|
|
|
declare var FS, ENV, Module; // mame emscripten
|
|
|
|
export abstract class BaseMAMEPlatform {
|
|
|
|
loaded : boolean = false;
|
|
preinitted : boolean = false;
|
|
started : boolean = false;
|
|
romfn : string;
|
|
romdata : Uint8Array;
|
|
video;
|
|
running = false;
|
|
console_vars : {[varname:string]:string[]} = {};
|
|
console_varname : string;
|
|
initluavars : boolean = false;
|
|
luadebugscript : string;
|
|
js_lua_string;
|
|
onBreakpointHit;
|
|
mainElement : HTMLElement;
|
|
|
|
constructor(mainElement) {
|
|
this.mainElement = mainElement;
|
|
}
|
|
|
|
luareset() {
|
|
this.console_vars = {};
|
|
}
|
|
|
|
// http://docs.mamedev.org/techspecs/luaengine.html
|
|
luacall(s) {
|
|
this.console_varname = null;
|
|
//Module.ccall('_Z13js_lua_stringPKc', 'void', ['string'], [s+""]);
|
|
if (!this.js_lua_string) this.js_lua_string = Module.cwrap('_Z13js_lua_stringPKc', 'void', ['string']);
|
|
this.js_lua_string(s || "");
|
|
}
|
|
|
|
pause() {
|
|
if (this.loaded && this.running) {
|
|
this.luacall('emu.pause()');
|
|
this.running = false;
|
|
}
|
|
}
|
|
|
|
resume() {
|
|
if (this.loaded && !this.running) { // TODO
|
|
this.luacall('emu.unpause()');
|
|
this.running = true;
|
|
}
|
|
}
|
|
|
|
reset() {
|
|
if (this.loaded) {
|
|
this.luacall('manager:machine():soft_reset()');
|
|
this.running = true;
|
|
this.initluavars = false;
|
|
}
|
|
}
|
|
|
|
isRunning() {
|
|
return this.running;
|
|
}
|
|
|
|
bufferConsoleOutput(s) {
|
|
if (!s) return;
|
|
if (s.startsWith(">>>")) {
|
|
this.console_varname = s.length > 3 ? s.slice(3) : null;
|
|
if (this.console_varname) this.console_vars[this.console_varname] = [];
|
|
} else if (this.console_varname) {
|
|
this.console_vars[this.console_varname].push(s);
|
|
if (this.console_varname == 'debug_stopped') {
|
|
var debugSaveState = this.preserveState();
|
|
this.pause();
|
|
if (this.onBreakpointHit) {
|
|
this.onBreakpointHit(debugSaveState);
|
|
}
|
|
}
|
|
} else {
|
|
console.log(s);
|
|
}
|
|
}
|
|
|
|
startModule(mainElement, opts) {
|
|
this.started = true;
|
|
var romfn = this.romfn = this.romfn || opts.romfn;
|
|
var romdata = this.romdata = this.romdata || opts.romdata || new RAM(opts.romsize).mem;
|
|
// create canvas
|
|
var video = this.video = new RasterVideo(this.mainElement, opts.width, opts.height);
|
|
video.create();
|
|
$(video.canvas).attr('id','canvas');
|
|
// load asm.js module
|
|
console.log("loading", opts.jsfile);
|
|
var modargs = [opts.driver,
|
|
'-debug',
|
|
'-debugger', 'none',
|
|
'-verbose', '-window', '-nokeepaspect',
|
|
'-resolution', video.canvas.width+'x'+video.canvas.height
|
|
];
|
|
if (romfn) modargs.push('-cart', romfn);
|
|
window['JSMESS'] = {};
|
|
window['Module'] = {
|
|
arguments: modargs,
|
|
screenIsReadOnly: true,
|
|
print: this.bufferConsoleOutput,
|
|
canvas:video.canvas,
|
|
doNotCaptureKeyboard:true,
|
|
keyboardListeningElement:video.canvas,
|
|
preInit: () => {
|
|
console.log("loading FS");
|
|
ENV.SDL_EMSCRIPTEN_KEYBOARD_ELEMENT = 'canvas';
|
|
if (opts.cfgfile) {
|
|
FS.mkdir('/cfg');
|
|
FS.writeFile('/cfg/' + opts.cfgfile, opts.cfgdata, {encoding:'utf8'});
|
|
}
|
|
if (opts.biosfile) {
|
|
FS.mkdir('/roms');
|
|
FS.mkdir('/roms/' + opts.driver);
|
|
FS.writeFile('/roms/' + opts.biosfile, opts.biosdata, {encoding:'binary'});
|
|
}
|
|
FS.mkdir('/emulator');
|
|
if (romfn) {
|
|
FS.writeFile(romfn, romdata, {encoding:'binary'});
|
|
}
|
|
//FS.writeFile('/debug.ini', 'debugger none\n', {encoding:'utf8'});
|
|
if (opts.preInit) {
|
|
opts.preInit(self);
|
|
}
|
|
this.preinitted = true;
|
|
},
|
|
preRun: [
|
|
() => {
|
|
$(video.canvas).click((e) =>{
|
|
video.canvas.focus();
|
|
});
|
|
this.loaded = true;
|
|
console.log("about to run...");
|
|
}
|
|
]
|
|
};
|
|
// preload files
|
|
// TODO: ensure loaded
|
|
var fetch_cfg, fetch_lua;
|
|
var fetch_bios = $.Deferred();
|
|
var fetch_wasm = $.Deferred();
|
|
// fetch config file
|
|
if (opts.cfgfile) {
|
|
fetch_cfg = $.get('mame/cfg/' + opts.cfgfile, (data) => {
|
|
opts.cfgdata = data;
|
|
console.log("loaded " + opts.cfgfile);
|
|
}, 'text');
|
|
}
|
|
// fetch BIOS file
|
|
if (opts.biosfile) {
|
|
var oReq1 = new XMLHttpRequest();
|
|
oReq1.open("GET", 'mame/roms/' + opts.biosfile, true);
|
|
oReq1.responseType = "arraybuffer";
|
|
oReq1.onload = (oEvent) => {
|
|
opts.biosdata = new Uint8Array(oReq1.response);
|
|
console.log("loaded " + opts.biosfile); // + " (" + oEvent.total + " bytes)");
|
|
fetch_bios.resolve();
|
|
};
|
|
oReq1.send();
|
|
} else {
|
|
fetch_bios.resolve();
|
|
}
|
|
// load debugger Lua script
|
|
fetch_lua = $.get('mame/debugger.lua', (data) => {
|
|
this.luadebugscript = data;
|
|
console.log("loaded debugger.lua");
|
|
}, 'text');
|
|
// load WASM
|
|
{
|
|
var oReq2 = new XMLHttpRequest();
|
|
oReq2.open("GET", 'mame/' + opts.jsfile.replace('.js','.wasm'), true);
|
|
oReq2.responseType = "arraybuffer";
|
|
oReq2.onload = (oEvent) => {
|
|
console.log("loaded WASM file");
|
|
window['Module'].wasmBinary = new Uint8Array(oReq2.response);
|
|
fetch_wasm.resolve();
|
|
};
|
|
oReq2.send();
|
|
}
|
|
// start loading script
|
|
$.when(fetch_lua, fetch_cfg, fetch_bios, fetch_wasm).done( () => {
|
|
var script = document.createElement('script');
|
|
script.src = 'mame/' + opts.jsfile;
|
|
document.getElementsByTagName('head')[0].appendChild(script);
|
|
console.log("created script element");
|
|
});
|
|
}
|
|
|
|
loadROMFile(data) {
|
|
this.romdata = data;
|
|
if (this.preinitted && this.romfn) {
|
|
FS.writeFile(this.romfn, data, {encoding:'binary'});
|
|
}
|
|
}
|
|
|
|
loadRegion(region, data) {
|
|
if (this.loaded && data.length > 0) {
|
|
//this.luacall('cart=manager:machine().images["cart"]\nprint(cart:filename())\ncart:load("' + romfn + '")\n');
|
|
var s = 'rgn = manager:machine():memory().regions["' + region + '"]\n';
|
|
//s += 'print(rgn.size)\n';
|
|
for (var i=0; i<data.length; i+=4) {
|
|
var v = data[i] + (data[i+1]<<8) + (data[i+2]<<16) + (data[i+3]<<24);
|
|
s += 'rgn:write_u32(' + i + ',' + v + ')\n'; // TODO: endian?
|
|
}
|
|
this.luacall(s);
|
|
this.reset();
|
|
}
|
|
}
|
|
|
|
preserveState() {
|
|
var state = {c:{}};
|
|
for (var k in this.console_vars) {
|
|
if (k.startsWith("cpu_")) {
|
|
var v = parseInt(this.console_vars[k][0]);
|
|
state.c[k.slice(4)] = v;
|
|
}
|
|
}
|
|
// TODO: memory?
|
|
return state;
|
|
}
|
|
|
|
/*
|
|
saveState() {
|
|
this.luareset();
|
|
this.luacall('mamedbg.printstate()');
|
|
return this.preserveState();
|
|
}
|
|
*/
|
|
initlua() {
|
|
if (!this.initluavars) {
|
|
this.luacall(this.luadebugscript);
|
|
this.luacall('mamedbg.init()')
|
|
this.initluavars = true;
|
|
}
|
|
}
|
|
|
|
readAddress(a) {
|
|
this.initlua();
|
|
this.luacall('print(">>>v"); print(mem:read_u8(' + a + '))');
|
|
return parseInt(this.console_vars.v[0]);
|
|
}
|
|
|
|
// DEBUGGING SUPPORT
|
|
|
|
clearDebug() {
|
|
this.onBreakpointHit = null;
|
|
}
|
|
getDebugCallback() {
|
|
return this.onBreakpointHit;// TODO?
|
|
}
|
|
setupDebug(callback) {
|
|
if (this.loaded) { // TODO?
|
|
this.initlua();
|
|
this.luareset();
|
|
}
|
|
this.onBreakpointHit = callback;
|
|
}
|
|
runToPC(pc) {
|
|
this.luacall('mamedbg.runTo(' + pc + ')');
|
|
this.resume();
|
|
}
|
|
runToVsync() {
|
|
this.luacall('mamedbg.runToVsync()');
|
|
this.resume();
|
|
}
|
|
runUntilReturn() {
|
|
this.luacall('mamedbg.runUntilReturn()');
|
|
this.resume();
|
|
}
|
|
step() {
|
|
this.luacall('mamedbg.step()');
|
|
this.resume();
|
|
}
|
|
// TODO: other than z80
|
|
cpuStateToLongString(c) {
|
|
if (c.HL)
|
|
return cpuStateToLongString_Z80(c);
|
|
else
|
|
return null; // TODO
|
|
}
|
|
}
|
|
|
|
export function dumpStackToString(platform:Platform, mem:Uint8Array|number[], start:number, end:number, sp:number, jsrop:number) : string {
|
|
var s = "";
|
|
var nraw = 0;
|
|
//s = dumpRAM(mem.slice(start,start+end+1), start, end-start+1);
|
|
function read(addr) {
|
|
if (addr < mem.length) return mem[addr];
|
|
else return platform.readAddress(addr);
|
|
}
|
|
while (sp < end) {
|
|
sp++;
|
|
// see if there's a JSR on the stack here
|
|
// TODO: make work with roms and memory maps
|
|
var addr = read(sp) + read(sp+1)*256;
|
|
var jsrofs = jsrop==0x20 ? -2 : -3; // 6502 vs Z80
|
|
var opcode = read(addr + jsrofs); // might be out of bounds
|
|
if (opcode == jsrop) { // JSR
|
|
s += "\n$" + hex(sp) + ": ";
|
|
s += hex(addr,4) + " " + lookupSymbol(platform, addr, true);
|
|
sp++;
|
|
nraw = 0;
|
|
} else {
|
|
if (nraw == 0)
|
|
s += "\n$" + hex(sp) + ": ";
|
|
s += hex(read(sp)) + " ";
|
|
if (++nraw == 8) nraw = 0;
|
|
}
|
|
}
|
|
return s+"\n";
|
|
}
|
|
|
|
export function lookupSymbol(platform:Platform, addr:number, extra:boolean) {
|
|
var start = addr;
|
|
var addr2symbol = platform.debugSymbols && platform.debugSymbols.addr2symbol;
|
|
while (addr2symbol && addr >= 0) {
|
|
var sym = addr2symbol[addr];
|
|
if (sym) { // return first symbol we find
|
|
var sym = addr2symbol[addr];
|
|
return extra ? (sym + " + " + (start-addr)) : sym;
|
|
}
|
|
addr--;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
///// Basic Platforms
|
|
|
|
export abstract class BasicZ80ScanlinePlatform extends BaseZ80Platform {
|
|
|
|
cpuFrequency : number;
|
|
canvasWidth : number;
|
|
numTotalScanlines : number;
|
|
numVisibleScanlines : number;
|
|
defaultROMSize : number;
|
|
|
|
cpuCyclesPerLine : number;
|
|
currentScanline : number;
|
|
startLineTstates : number;
|
|
|
|
cpu;
|
|
membus : MemoryBus;
|
|
iobus : MemoryBus;
|
|
ram = new Uint8Array(0);
|
|
rom = new Uint8Array(0);
|
|
video;
|
|
timer;
|
|
audio;
|
|
psg;
|
|
inputs = new Uint8Array(16);
|
|
mainElement : HTMLElement;
|
|
|
|
abstract newRAM() : Uint8Array;
|
|
abstract newMembus() : MemoryBus;
|
|
abstract newIOBus() : MemoryBus;
|
|
abstract getVideoOptions() : {};
|
|
abstract getKeyboardMap();
|
|
abstract startScanline(sl : number) : void;
|
|
abstract drawScanline(sl : number) : void;
|
|
getRasterScanline() : number { return this.currentScanline; }
|
|
getKeyboardFunction() { return null; }
|
|
|
|
constructor(mainElement : HTMLElement) {
|
|
super();
|
|
this.mainElement = mainElement;
|
|
}
|
|
|
|
start() {
|
|
this.cpuCyclesPerLine = Math.round(this.cpuFrequency / 60 / this.numTotalScanlines);
|
|
this.ram = this.newRAM();
|
|
this.membus = this.newMembus();
|
|
this.iobus = this.newIOBus();
|
|
this.cpu = this.newCPU(this.membus, this.iobus);
|
|
this.video = new RasterVideo(this.mainElement, this.canvasWidth, this.numVisibleScanlines, this.getVideoOptions());
|
|
this.video.create();
|
|
setKeyboardFromMap(this.video, this.inputs, this.getKeyboardMap(), this.getKeyboardFunction());
|
|
this.timer = new AnimationTimer(60, this.nextFrame.bind(this));
|
|
}
|
|
|
|
readAddress(addr) {
|
|
return this.membus.read(addr);
|
|
}
|
|
|
|
advance(novideo : boolean) {
|
|
var extraCycles = 0;
|
|
for (var sl=0; sl<this.numTotalScanlines; sl++) {
|
|
this.startLineTstates = this.cpu.getTstates();
|
|
this.currentScanline = sl;
|
|
this.startScanline(sl);
|
|
extraCycles = this.runCPU(this.cpu, this.cpuCyclesPerLine - extraCycles); // TODO: HALT opcode?
|
|
this.drawScanline(sl);
|
|
}
|
|
this.video.updateFrame();
|
|
}
|
|
|
|
loadROM(title, data) {
|
|
this.rom = padBytes(data, this.defaultROMSize);
|
|
this.reset();
|
|
}
|
|
|
|
loadState(state) {
|
|
this.cpu.loadState(state.c);
|
|
this.ram.set(state.b);
|
|
this.inputs.set(state.in);
|
|
}
|
|
saveState() {
|
|
return {
|
|
c:this.getCPUState(),
|
|
b:this.ram.slice(0),
|
|
in:this.inputs.slice(0),
|
|
};
|
|
}
|
|
loadControlsState(state) {
|
|
this.inputs.set(state.in);
|
|
}
|
|
saveControlsState() {
|
|
return {
|
|
in:this.inputs.slice(0)
|
|
};
|
|
}
|
|
getCPUState() {
|
|
return this.cpu.saveState();
|
|
}
|
|
|
|
isRunning() {
|
|
return this.timer && this.timer.isRunning();
|
|
}
|
|
pause() {
|
|
this.timer.stop();
|
|
if (this.audio) this.audio.stop();
|
|
}
|
|
resume() {
|
|
this.timer.start();
|
|
if (this.audio) this.audio.start();
|
|
}
|
|
reset() {
|
|
this.cpu.reset();
|
|
this.cpu.setTstates(0);
|
|
}
|
|
}
|