pvbemu/web/debugger/Debugger.js

import { ISX } from /**/"./ISX.js";

// Debug mode UI manager
class Debugger {

    ///////////////////////////// Static Methods //////////////////////////////

    // Data type conversions
    static F32 = new Float32Array(1);
    static U32 = new Uint32Array(this.F32.buffer);

    // Reinterpret a float32 as a u32
    static fxi(x) {
        this.F32[0] = x;
        return this.U32[0];
    }

    // Process file data as ISM
    static isx(data) {
        return new ISX(data);
    }

    // Reinterpret a u32 as a float32
    static ixf(x) {
        this.U32[0] = x;
        return this.F32[0];
    }

    // Compute the number of lines scrolled by a WheelEvent
    static linesScrolled(e, lineHeight, pageLines, delta) {
        let ret = {
            delta: delta,
            lines: 0
        };

        // No scrolling occurred
        if (e.deltaY == 0);

        // Scrolling by pixel
        else if (e.deltaMode == WheelEvent.DOM_DELTA_PIXEL) {
            ret.delta += e.deltaY;
            ret.lines  = Math.sign(ret.delta) *
                Math.floor(Math.abs(ret.delta) / lineHeight);
            ret.delta -= ret.lines * lineHeight;
        }

        // Scrolling by line
        else if (e.deltaMode == WheelEvent.DOM_DELTA_LINE)
            ret.lines = Math.trunc(e.deltaY);

        // Scrolling by page
        else if (e.deltaMode == WheelEvent.DOM_DELTA_PAGE)
            ret.lines = Math.trunc(e.deltaY) * pageLines;

        // Unknown scrolling mode
        else ret.lines = 3 * Math.sign(e.deltaY);

        return ret;
    }



    ///////////////////////// Initialization Methods //////////////////////////

    constructor(app, sim, index) {

        // Configure instance fields
        this.app  = app;
        this.core = app.core;
        this.dasm = app.dasm;
        this.sim  = sim;

        // Configure debugger windows
        this.cpu    = new Debugger.CPU   (this, index);
        this.memory = new Debugger.Memory(this, index);
    }



    ///////////////////////////// Package Methods /////////////////////////////

    // Ensure PC is visible in the disassembler
    followPC(pc = null) {
        this.cpu.disassembler.followPC(pc);
    }

    // Format a number as hexadecimal
    hex(value, digits = null, decorated = true) {
        return this.dasm.hex(value, digits, decorated);
    }

}

// Register component classes
(await import(/**/"./CPU.js"   )).register(Debugger);
(await import(/**/"./Memory.js")).register(Debugger);

export { Debugger };