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18e6951f17
On the 65816, 16-bit data access instructions (e.g. LDA abs) are expanded to 24 bits by merging in the Data Bank Register (B). The value of the register is difficult to determine via static analysis, so we need a way to annotate the disassembly with the correct value. Without this, the mapping of address to file offset will sometimes be incorrect. This change adds the basic data structures and "fixup" function, a functional but incomplete editor, and source for a new test case.
109 lines
4.5 KiB
C#
109 lines
4.5 KiB
C#
/*
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* Copyright 2018 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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namespace CommonUtil {
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public static class Misc {
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/// <summary>
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/// Application identifier. This is an arbitrary string set by the application. It
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/// will be included in the crash dump.
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/// </summary>
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public static string AppIdent { get; set; } = "(app ident unset)";
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// Given a type, dump all namespaces found in the same assembly.
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// https://stackoverflow.com/a/1549216/294248
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public static void DumpNamespacesInAssembly(Type type) {
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Console.WriteLine("Assembly: " + type.Assembly.Location);
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Type[] typeList = type.Assembly.GetTypes();
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var namespaces = typeList.Select(t => t.Namespace).Distinct();
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foreach (string ns in namespaces) {
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Console.WriteLine(" " + ns);
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}
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}
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/// <summary>
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/// Writes an unhandled exception trace to a crash file.
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/// </summary>
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/// <remarks>
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/// Usage:
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/// AppDomain.CurrentDomain.UnhandledException +=
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/// new UnhandledExceptionEventHandler(CommonUtil.Misc.CrashReporter);
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///
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/// Thanks: https://stackoverflow.com/a/21308327/294248
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/// </remarks>
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public static void CrashReporter(object sender, UnhandledExceptionEventArgs e) {
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const string CRASH_PATH = @"CrashLog.txt";
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Exception ex = (Exception)e.ExceptionObject;
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Debug.WriteLine("CRASHING (term=" + e.IsTerminating + "): " + ex);
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try {
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using (StreamWriter writer = new StreamWriter(CRASH_PATH, true)) {
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writer.WriteLine("*** " + DateTime.Now.ToLocalTime() + " ***");
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writer.WriteLine(" App: " + AppIdent);
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writer.WriteLine(" OS: " +
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System.Runtime.InteropServices.RuntimeInformation.OSDescription);
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writer.WriteLine(string.Empty);
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while (ex != null) {
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writer.WriteLine(ex.GetType().FullName + ": " + ex.Message);
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writer.WriteLine("Trace:");
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writer.WriteLine(ex.StackTrace);
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writer.WriteLine(string.Empty);
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ex = ex.InnerException;
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}
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}
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} catch {
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// damn it
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Debug.WriteLine("Crashed while crashing");
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}
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}
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/// <summary>
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/// Clears an array to a specific value, similar to memset() in libc. This is much
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/// faster than setting array elements individually.
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/// </summary>
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/// <remarks>
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/// From https://stackoverflow.com/a/18659408/294248
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///
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/// Invokes Array.Copy() on overlapping elements. Other approaches involve using
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/// Buffer.BlockCopy or unsafe code. Apparently .NET Core has an Array.Fill(), but
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/// that doesn't exist in .NET Framework.
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///
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/// We could get off the line a little faster by setting the first 16 or so elements in
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/// a loop, bailing out if we finish early, so we don't start calling Array.Copy() until
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/// it's actually faster to do so. I don't expect to be calling this often or for
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/// small arrays though.
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/// </remarks>
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/// <typeparam name="T">Array element type.</typeparam>
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/// <param name="array">Array reference.</param>
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/// <param name="elem">Initialization value.</param>
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public static void Memset<T>(T[] array, T elem) {
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//Array.Fill(array, elem);
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int length = array.Length;
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if (length == 0) return;
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array[0] = elem;
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int count;
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for (count = 1; count <= length / 2; count *= 2)
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Array.Copy(array, 0, array, count, count);
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Array.Copy(array, 0, array, count, length - count);
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}
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}
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}
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