delete GenDbgHlp.cs
unused ancient code from pre-wbx days it seems?
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CasualPokePlayer
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@ -1,190 +0,0 @@
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.IO;
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using BizHawk.Common;
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using BizHawk.Common.StringExtensions;
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namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
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{
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/*
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* how to use:
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* 0) get https://code.google.com/p/pdbparse/
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* 1) set modulename to the name of the dll file.
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* 2) set symbolname to the name of a file that you produced by executing the following command:
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* pdb_print_gvars.py [module pdb file] 0x00000000 > [output file]
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* 3) set start to an address (relative to the beginning of the dll) to start scanning
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* 4) set length to the byte length of the scan area
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* 5) instantiate a GenDbWind, and use it to control the scanner while you manipulate the dll into various configurations.
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*
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* ideas for modification:
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* 1) unhardcode config parameters and allow modifying them through the interface
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* 2) read section sizes and positions from the dll itself instead of the start\length params
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* 3) support an ignore list of symbols
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*/
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public sealed class GenDbgHlp : IDisposable
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{
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// config
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private const string modulename = "libgenplusgx.dll";
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private const string symbolname = @"D:\encodes\bizhawksrc\genplus-gx\libretro\msvc\Debug\vars.txt";
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private const int start = 0x0c7d8000 - 0x0c540000;
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private const int length = 0x01082000;
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private bool disposed => DllBase == IntPtr.Zero;
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public void Dispose()
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{
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if (DllBase == IntPtr.Zero) return; // already freed
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OSTailoredCode.LinkedLibManager.FreeByPtr(DllBase);
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DllBase = IntPtr.Zero;
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}
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private IntPtr DllBase;
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private readonly List<Symbol> SymbolsByAddr = new List<Symbol>();
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private readonly IDictionary<string, Symbol> SymbolsByName = new Dictionary<string, Symbol>();
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private readonly byte[][] data = new byte[10][];
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public void SaveState(int statenum)
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{
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if (disposed) throw new ObjectDisposedException(nameof(GenDbgHlp));
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data[statenum] ??= new byte[length];
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Marshal.Copy(DllBase + start, data[statenum], 0, length);
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Console.WriteLine("State {0} saved", statenum);
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}
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public unsafe void Cmp(int statex, int statey)
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{
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if (disposed) throw new ObjectDisposedException(nameof(GenDbgHlp));
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List<Tuple<int, int>> bads = new List<Tuple<int, int>>();
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byte[] x = data[statex];
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byte[] y = data[statey];
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if (x == null || y == null)
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{
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Console.WriteLine("Missing State!");
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return;
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}
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bool inrange = false;
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int startsec = 0;
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fixed (byte* p0 = &x[0])
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fixed (byte* p1 = &y[0])
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{
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for (int i = 0; i < length; i++)
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{
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if (!inrange)
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{
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if (p0[i] != p1[i])
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{
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startsec = i;
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inrange = true;
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}
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}
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else
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{
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if (p0[i] == p1[i])
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{
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bads.Add(new Tuple<int, int>(startsec, i));
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inrange = false;
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}
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}
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}
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}
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if (inrange)
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bads.Add(new Tuple<int, int>(startsec, length));
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for (int i = 0; i < bads.Count; i++)
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{
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IntPtr addr = (IntPtr)(bads[i].Item1 + start);
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int len = bads[i].Item2 - bads[i].Item1;
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var ss = Find(addr, len);
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Console.WriteLine("0x{0:X8}[0x{1}]", (int)addr, len);
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foreach (var sym in ss)
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Console.WriteLine(sym);
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Console.WriteLine();
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}
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if (bads.Count == 0)
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Console.WriteLine("Clean!");
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}
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public GenDbgHlp()
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{
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using (StreamReader sr = new StreamReader(symbolname))
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{
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string line;
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while ((line = sr.ReadLine()) != null)
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{
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Symbol sym = Symbol.FromString(line);
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SymbolsByAddr.Add(sym);
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SymbolsByName.Add(sym.name, sym);
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}
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SymbolsByAddr.Sort();
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}
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DllBase = OSTailoredCode.LinkedLibManager.LoadOrThrow(modulename);
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}
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public List<Symbol> Find(IntPtr addr, int length)
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{
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if (disposed) throw new ObjectDisposedException(nameof(GenDbgHlp));
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Symbol min = new Symbol { addr = addr };
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Symbol max = new Symbol { addr = addr + length };
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int minidx = SymbolsByAddr.BinarySearch(min);
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if (minidx < 0)
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{
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minidx = ~minidx;
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// inexact matches return the first larger value, so find the next smallset one
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if (minidx > 0)
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minidx--;
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}
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int maxidx = SymbolsByAddr.BinarySearch(max);
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if (maxidx < 0)
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{
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maxidx = ~maxidx;
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if (maxidx > 0)
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maxidx--;
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}
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return SymbolsByAddr.GetRange(minidx, maxidx - minidx + 1);
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}
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public struct Symbol : IComparable<Symbol>
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{
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public IntPtr addr;
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public string section;
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public string name;
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public static Symbol FromString(string s)
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{
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string[] ss = s.Split(',');
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if (ss.Length != 4)
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throw new Exception();
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if (!ss[1].StartsWithOrdinal("0x"))
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throw new Exception();
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Symbol ret = new Symbol
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{
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addr = (IntPtr)int.Parse(ss[1].Substring(2), System.Globalization.NumberStyles.AllowHexSpecifier),
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section = ss[3],
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name = ss[0]
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};
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return ret;
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}
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public int CompareTo(Symbol other)
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{
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return (int)this.addr - (int)other.addr;
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}
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public override string ToString() => $"0x{(int)addr:X8} {name} ({section})";
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}
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}
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}
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