mirror of
https://github.com/fadden/6502bench.git
synced 2024-11-30 01:50:10 +00:00
b37d3dba02
If PTR is defined as an external symbol, we were automatically symbol-ifying PTR+1. Now we also symbolify PTR+2. This helps with 24-bit pointers on the 65816, and 16-bit "jump vectors", where the address is preceded by a JMP opcode. Removed the "AMPERV_" symbol I added to make the tutorial look right.
1620 lines
79 KiB
C#
1620 lines
79 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.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Text;
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using Asm65;
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using CommonUtil;
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using SourceGen.Sandbox;
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namespace SourceGen {
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/// <summary>
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/// All state for an open project.
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///
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/// This class does no file I/O or user interaction.
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/// </summary>
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public class DisasmProject {
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// Arbitrary 1MB limit. Could be increased to 16MB if performance is acceptable.
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public const int MAX_DATA_FILE_SIZE = 1 << 20;
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// File magic.
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private const long MAGIC = 6982516645493599905;
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#region Data that is saved and restored
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// All data held by structures in this section are persistent, and will be
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// written to the project file. Anything not in this section may be discarded
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// at any time. Smaller items are kept in arrays, with one entry per byte
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// of file data.
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// Length of input data. (This is redundant with FileData.Length while in memory,
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// but we want this value to be serialized into the project file.)
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public int FileDataLength { get; private set; }
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// CRC-32 on input data.
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public uint FileDataCrc32 { get; private set; }
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// Map file offsets to addresses.
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public AddressMap AddrMap { get { return mAddrMap; } }
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private AddressMap mAddrMap;
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// Type hints. Default value is "no hint".
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public CodeAnalysis.TypeHint[] TypeHints { get; private set; }
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// Status flag overrides. Default value is "all unspecified".
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public StatusFlags[] StatusFlagOverrides { get; private set; }
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// End-of-line comments. Empty string means "no comment".
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public string[] Comments { get; private set; }
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// Full line, possibly multi-line comments.
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public Dictionary<int, MultiLineComment> LongComments { get; private set; }
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// Notes, which are like comments but not included in the assembled output.
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public SortedList<int, MultiLineComment> Notes { get; private set; }
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// Labels, defined by the user; uses file offset as key. Ideally the label names
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// are unique, but there are ways around that.
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public Dictionary<int, Symbol> UserLabels { get; private set; }
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// Format descriptors for operands and data items; uses file offset as key.
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public SortedList<int, FormatDescriptor> OperandFormats { get; private set; }
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// Project properties. Includes CPU type, platform symbol file names, project
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// symbols, etc.
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public ProjectProperties ProjectProps { get; private set; }
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#endregion // data to save & restore
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/// <summary>
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/// The contents of the 65xx data file.
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/// </summary>
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public byte[] FileData { get { return mFileData; } }
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private byte[] mFileData;
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/// <summary>
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/// CPU definition to use when analyzing input.
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/// </summary>
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public CpuDef CpuDef { get; private set; }
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/// <summary>
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/// If true, plugins will execute in the main application's AppDomain instead of
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/// the sandbox. Must be set before calling Initialize().
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/// </summary>
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public bool UseMainAppDomainForPlugins { get; set; }
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/// <summary>
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/// Full pathname of project file. The directory name is needed when loading
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/// platform symbols and extension scripts from the project directory, and the
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/// filename is used to give project-local extension scripts unique DLL names.
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///
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/// For a new project that hasn't been saved yet, this will be empty.
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/// </summary>
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public string ProjectPathName { get; set; }
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// Name of data file. This is used for debugging and when naming DLLs for
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// project-local extension scripts. Just the filename, not the path.
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private string mDataFileName;
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// This holds working state for the code and data analyzers. Some of the state
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// is presented directly to the user, e.g. status flags. All of the data here
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// should be considered transient; it may be discarded at any time without
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// causing user data loss.
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private Anattrib[] mAnattribs;
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// A snapshot of the Anattribs array, taken after code analysis has completed,
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// before data analysis has begun.
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private Anattrib[] mCodeOnlyAnattribs;
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// Symbol lists loaded from platform symbol files. This is essentially a list
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// of lists, of symbols.
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private List<PlatformSymbols> PlatformSyms { get; set; }
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// Extension script manager. Controls AppDomain sandbox.
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private ScriptManager mScriptManager;
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// All symbols, including user-defined, platform-specific, and auto-generated, keyed by
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// label string. This is rebuilt whenever we do a refresh, and modified whenever
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// labels or platform definitions are edited.
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//
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// Note this includes project/platform symbols that will not be in the assembled output.
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public SymbolTable SymbolTable { get; private set; }
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// Cross-reference data, indexed by file offset.
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private Dictionary<int, XrefSet> mXrefs = new Dictionary<int, XrefSet>();
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// Project and platform symbols that are being referenced from code.
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public List<DefSymbol> ActiveDefSymbolList { get; private set; }
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// List of changes for undo/redo.
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private List<ChangeSet> mUndoList = new List<ChangeSet>();
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// Index of slot where next undo operation will be placed.
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private int mUndoTop = 0;
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// Index of top when the file was last saved.
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private int mUndoSaveIndex = 0;
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/// <summary>
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/// Constructs a new project.
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/// </summary>
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public DisasmProject() { }
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/// <summary>
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/// Prepares the object by instantiating various fields, some of which are sized to
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/// match the length of the data file. The data file may not have been loaded yet
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/// (e.g. when deserializing a project file).
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/// </summary>
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public void Initialize(int fileDataLen) {
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Debug.Assert(FileDataLength == 0); // i.e. Initialize() hasn't run yet
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Debug.Assert(fileDataLen > 0);
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FileDataLength = fileDataLen;
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ProjectPathName = string.Empty;
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mAddrMap = new AddressMap(fileDataLen);
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mAddrMap.Set(0, 0x1000); // default load address to $1000; override later
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// Default value is "no hint".
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TypeHints = new CodeAnalysis.TypeHint[fileDataLen];
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// Default value is "unspecified" for all bits.
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StatusFlagOverrides = new StatusFlags[fileDataLen];
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Comments = new string[fileDataLen];
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// Populate with empty strings so we don't have to worry about null refs.
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for (int i = 0; i < Comments.Length; i++) {
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Comments[i] = string.Empty;
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}
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LongComments = new Dictionary<int, MultiLineComment>();
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Notes = new SortedList<int, MultiLineComment>();
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UserLabels = new Dictionary<int, Symbol>();
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OperandFormats = new SortedList<int, FormatDescriptor>();
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ProjectProps = new ProjectProperties();
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SymbolTable = new SymbolTable();
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PlatformSyms = new List<PlatformSymbols>();
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ActiveDefSymbolList = new List<DefSymbol>();
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// Default to 65816. This will be replaced with value from project file or
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// system definition.
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ProjectProps.CpuType = CpuDef.CpuType.Cpu65816;
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ProjectProps.IncludeUndocumentedInstr = false;
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UpdateCpuDef();
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}
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/// <summary>
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/// Discards resources, notably the sandbox AppDomain.
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/// </summary>
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public void Cleanup() {
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Debug.WriteLine("DisasmProject.Cleanup(): scriptMgr=" + mScriptManager);
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if (mScriptManager != null) {
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mScriptManager.Cleanup();
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mScriptManager = null;
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}
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}
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/// <summary>
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/// Prepares the DisasmProject for use as a new project.
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/// </summary>
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/// <param name="fileData">65xx data file contents.</param>
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/// <param name="dataFileName">Data file's filename (not pathname).</param>
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public void PrepForNew(byte[] fileData, string dataFileName) {
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Debug.Assert(fileData.Length == FileDataLength);
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mFileData = fileData;
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mDataFileName = dataFileName;
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FileDataCrc32 = CommonUtil.CRC32.OnWholeBuffer(0, mFileData);
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// Mark the first byte as code so we have something to do. This may get
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// overridden later.
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TypeHints[0] = CodeAnalysis.TypeHint.Code;
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}
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/// <summary>
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/// Pulls items of interest out of the system definition object and applies them
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/// to the project. Call this after LoadDataFile() for a new project.
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/// </summary>
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/// <param name="sysDef">Target system definition.</param>
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public void ApplySystemDef(Setup.SystemDef sysDef) {
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CpuDef.CpuType cpuType = CpuDef.GetCpuTypeFromName(sysDef.Cpu);
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bool includeUndoc = Setup.SystemDefaults.GetUndocumentedOpcodes(sysDef);
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CpuDef tmpDef = CpuDef.GetBestMatch(cpuType, includeUndoc);
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// Store the best-matched CPU in properties, rather than whichever was originally
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// requested. This way the behavior of the project is the same for everyone, even
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// if somebody has a newer app version with specialized handling for the
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// originally-specified CPU.
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ProjectProps.CpuType = tmpDef.Type;
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ProjectProps.IncludeUndocumentedInstr = includeUndoc;
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UpdateCpuDef();
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ProjectProps.EntryFlags = Setup.SystemDefaults.GetEntryFlags(sysDef);
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// Configure the load address.
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if (Setup.SystemDefaults.GetFirstWordIsLoadAddr(sysDef) && mFileData.Length > 2) {
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// First two bytes are the load address, code starts at offset +000002. We
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// need to put the load address into the stream, but don't want it to get
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// picked up as an address for something else. So we set it to the same
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// address as the start of the file. The overlapping-address code should do
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// the right thing with it.
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int loadAddr = RawData.GetWord(mFileData, 0, 2, false);
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mAddrMap.Set(0, loadAddr);
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mAddrMap.Set(2, loadAddr);
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OperandFormats[0] = FormatDescriptor.Create(2, FormatDescriptor.Type.NumericLE,
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FormatDescriptor.SubType.None);
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TypeHints[0] = CodeAnalysis.TypeHint.NoHint;
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TypeHints[2] = CodeAnalysis.TypeHint.Code;
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} else {
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int loadAddr = Setup.SystemDefaults.GetLoadAddress(sysDef);
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mAddrMap.Set(0, loadAddr);
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}
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foreach (string str in sysDef.SymbolFiles) {
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ProjectProps.PlatformSymbolFileIdentifiers.Add(str);
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}
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foreach (string str in sysDef.ExtensionScripts) {
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ProjectProps.ExtensionScriptFileIdentifiers.Add(str);
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}
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}
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public void UpdateCpuDef() {
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CpuDef = CpuDef.GetBestMatch(ProjectProps.CpuType,
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ProjectProps.IncludeUndocumentedInstr);
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}
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/// <summary>
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/// Sets the file CRC. Called during deserialization.
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/// </summary>
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/// <param name="crc">Data file CRC.</param>
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public void SetFileCrc(uint crc) {
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Debug.Assert(FileDataLength > 0);
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FileDataCrc32 = crc;
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}
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/// <summary>
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/// Sets the file data array. Used when the project is created from a project file.
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/// </summary>
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/// <param name="fileData">65xx data file contents.</param>
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/// <param name="dataFileName">Data file's filename (not pathname).</param>
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public void SetFileData(byte[] fileData, string dataFileName) {
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Debug.Assert(fileData.Length == FileDataLength);
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Debug.Assert(CRC32.OnWholeBuffer(0, fileData) == FileDataCrc32);
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mFileData = fileData;
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mDataFileName = dataFileName;
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}
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/// <summary>
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/// Loads platform symbol files and extension scripts.
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///
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/// Call this on initial load and whenever the set of platform symbol files changes
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/// in the project config.
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///
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/// Failures here will be reported to the user but aren't fatal.
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/// </summary>
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/// <returns>String with all warnings from load process.</returns>
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public string LoadExternalFiles() {
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TaskTimer timer = new TaskTimer();
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timer.StartTask("Total");
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StringBuilder sb = new StringBuilder();
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string projectDir = string.Empty;
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if (!string.IsNullOrEmpty(ProjectPathName)) {
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projectDir = Path.GetDirectoryName(ProjectPathName);
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}
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// Load the platform symbols first.
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timer.StartTask("Platform Symbols");
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PlatformSyms.Clear();
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foreach (string fileIdent in ProjectProps.PlatformSymbolFileIdentifiers) {
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PlatformSymbols ps = new PlatformSymbols();
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bool ok = ps.LoadFromFile(fileIdent, projectDir, out FileLoadReport report);
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if (ok) {
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PlatformSyms.Add(ps);
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}
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if (report.Count > 0) {
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sb.Append(report.Format());
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}
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}
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timer.EndTask("Platform Symbols");
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// Instantiate the script manager on first use.
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timer.StartTask("Create ScriptManager");
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if (mScriptManager == null) {
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mScriptManager = new ScriptManager(this);
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} else {
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mScriptManager.Clear();
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}
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timer.EndTask("Create ScriptManager");
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// Load the extension script files.
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timer.StartTask("Load Extension Scripts");
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foreach (string fileIdent in ProjectProps.ExtensionScriptFileIdentifiers) {
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bool ok = mScriptManager.LoadPlugin(fileIdent, out FileLoadReport report);
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if (report.Count > 0) {
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sb.Append(report.Format());
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}
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}
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timer.EndTask("Load Extension Scripts");
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timer.EndTask("Total");
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timer.DumpTimes("Time to load external files:");
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return sb.ToString();
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}
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/// <summary>
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/// Analyzes the file data. This is the main entry point for code/data analysis.
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/// </summary>
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/// <param name="reanalysisRequired">How much work to do.</param>
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/// <param name="debugLog">Object to send debug output to.</param>
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/// <param name="reanalysisTimer">Task timestamp collection object.</param>
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public void Analyze(UndoableChange.ReanalysisScope reanalysisRequired,
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CommonUtil.DebugLog debugLog, TaskTimer reanalysisTimer) {
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// This method doesn't report failures. It succeeds to the best of its ability,
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// and handles problems by discarding bad data. The overall philosophy is that
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// the program will never generate bad data, and any bad project file contents
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// (possibly introduced by hand-editing) are identified at load time, called out
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// to the user, and discarded.
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Debug.Assert(reanalysisRequired != UndoableChange.ReanalysisScope.None);
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reanalysisTimer.StartTask("DisasmProject.Analyze()");
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// Populate the symbol table with platform symbols, in file load order, then
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// merge in the project symbols, potentially replacing platform symbols that
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// have the same label. This version of the table is passed to plugins during
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// code analysis.
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reanalysisTimer.StartTask("SymbolTable init");
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SymbolTable.Clear();
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MergePlatformProjectSymbols();
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// Merge user labels into the symbol table, overwriting platform/project symbols
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// where they conflict. Labels whose values are out of sync (because of a change
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// to the address map) are updated as part of this.
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UpdateAndMergeUserLabels();
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reanalysisTimer.EndTask("SymbolTable init");
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if (reanalysisRequired == UndoableChange.ReanalysisScope.CodeAndData) {
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// Always want to start with a blank array. Going to be lazy and let the
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// system allocator handle that for us.
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mAnattribs = new Anattrib[mFileData.Length];
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reanalysisTimer.StartTask("CodeAnalysis.Analyze");
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CodeAnalysis ca = new CodeAnalysis(mFileData, CpuDef, mAnattribs, mAddrMap,
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TypeHints, StatusFlagOverrides, ProjectProps.EntryFlags, mScriptManager,
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debugLog);
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ca.Analyze();
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reanalysisTimer.EndTask("CodeAnalysis.Analyze");
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// Save a copy of the current state.
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mCodeOnlyAnattribs = new Anattrib[mAnattribs.Length];
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Array.Copy(mAnattribs, mCodeOnlyAnattribs, mAnattribs.Length);
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} else {
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// Load Anattribs array from the stored copy.
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Debug.WriteLine("Partial reanalysis");
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reanalysisTimer.StartTask("CodeAnalysis (restore prev)");
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Debug.Assert(mCodeOnlyAnattribs != null);
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Array.Copy(mCodeOnlyAnattribs, mAnattribs, mAnattribs.Length);
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reanalysisTimer.EndTask("CodeAnalysis (restore prev)");
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}
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reanalysisTimer.StartTask("Apply labels, formats, etc.");
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// Apply any user-defined labels to the Anattribs array.
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ApplyUserLabels(debugLog);
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// Apply user-created format descriptors to instructions and data items.
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ApplyFormatDescriptors(debugLog);
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reanalysisTimer.EndTask("Apply labels, formats, etc.");
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reanalysisTimer.StartTask("DataAnalysis");
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DataAnalysis da = new DataAnalysis(this, mAnattribs);
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da.DebugLog = debugLog;
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reanalysisTimer.StartTask("DataAnalysis.AnalyzeDataTargets");
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da.AnalyzeDataTargets();
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reanalysisTimer.EndTask("DataAnalysis.AnalyzeDataTargets");
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// Analyze uncategorized regions. When this completes, the Anattrib array will
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// be complete for every offset, and the file will be traversible by walking
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// through the lengths of each entry.
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reanalysisTimer.StartTask("DataAnalysis.AnalyzeUncategorized");
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da.AnalyzeUncategorized();
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reanalysisTimer.EndTask("DataAnalysis.AnalyzeUncategorized");
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reanalysisTimer.EndTask("DataAnalysis");
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reanalysisTimer.StartTask("RemoveHiddenLabels");
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RemoveHiddenLabels();
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reanalysisTimer.EndTask("RemoveHiddenLabels");
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// ----------
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// NOTE: we could add an additional re-analysis entry point here, that just deals with
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// platform symbols and xrefs, to be used after a change to project symbols. We'd
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// need to check all existing refs to confirm that the symbol hasn't been removed.
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// Symbol updates are sufficiently infrequent that this probably isn't worthwhile.
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// NOTE: we could at this point apply platform address symbols as code labels, so
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// that locations in the code that correspond to well-known addresses would pick
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// up the appropriate label instead of getting auto-labeled. It's unclear
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// whether this is desirable, especially if the user is planning to modify the
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// output later on, and it could mess things up if we start slapping
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// labels into the middle of data regions. It's generally safer to treat
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// platform symbols as labels for constants and external references. If somebody
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// finds an important use case we can revisit this; might merit a special type
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// of equate or section in the platform symbol definition file.
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reanalysisTimer.StartTask("GeneratePlatformSymbolRefs");
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// Generate references to platform and project external symbols.
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GeneratePlatformSymbolRefs();
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reanalysisTimer.EndTask("GeneratePlatformSymbolRefs");
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reanalysisTimer.StartTask("GenerateXrefs");
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// Generate cross-reference lists.
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mXrefs.Clear();
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GenerateXrefs();
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reanalysisTimer.EndTask("GenerateXrefs");
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reanalysisTimer.StartTask("GenerateActiveDefSymbolList");
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// Generate the list of project/platform symbols that are being used.
|
|
GenerateActiveDefSymbolList();
|
|
reanalysisTimer.EndTask("GenerateActiveDefSymbolList");
|
|
|
|
Validate();
|
|
|
|
reanalysisTimer.EndTask("DisasmProject.Analyze()");
|
|
//reanalysisTimer.DumpTimes("DisasmProject timers:", debugLog);
|
|
|
|
debugLog.LogI("Analysis complete");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Applies user labels to the Anattribs array. Symbols with stale Value fields will
|
|
/// be replaced.
|
|
/// </summary>
|
|
/// <param name="genLog">Log for debug messages.</param>
|
|
private void ApplyUserLabels(DebugLog genLog) {
|
|
foreach (KeyValuePair<int, Symbol> kvp in UserLabels) {
|
|
int offset = kvp.Key;
|
|
if (offset < 0 || offset >= mAnattribs.Length) {
|
|
genLog.LogE("Invalid offset +" + offset.ToString("x6") +
|
|
"(label=" + kvp.Value.Label + ")");
|
|
continue; // ignore this
|
|
}
|
|
|
|
if (mAnattribs[offset].Symbol != null) {
|
|
genLog.LogW("Multiple labels at offset +" + offset.ToString("x6") +
|
|
": " + kvp.Value.Label + " / " + mAnattribs[offset].Symbol.Label);
|
|
continue;
|
|
}
|
|
|
|
int expectedAddr = kvp.Value.Value;
|
|
Debug.Assert(expectedAddr == mAddrMap.OffsetToAddress(offset));
|
|
|
|
// Add direct reference to the UserLabels Symbol object.
|
|
mAnattribs[offset].Symbol = kvp.Value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Applies user-defined format descriptors to the Anattribs array. This specifies the
|
|
/// format for instruction operands, and identifies data items.
|
|
/// </summary>
|
|
/// <param name="genLog">Log for debug messages.</param>
|
|
private void ApplyFormatDescriptors(DebugLog genLog) {
|
|
foreach (KeyValuePair<int, FormatDescriptor> kvp in OperandFormats) {
|
|
int offset = kvp.Key;
|
|
|
|
// If you hint as data, apply formats, and then hint as code, all sorts
|
|
// of strange things can happen. We want to ignore anything that doesn't
|
|
// appear to be valid. While we're at it, we do some internal consistency
|
|
// checks in the name of catching bugs as soon as possible.
|
|
|
|
// Check offset.
|
|
if (offset < 0 || offset >= mAnattribs.Length) {
|
|
genLog.LogE("Invalid offset +" + offset.ToString("x6") +
|
|
"(desc=" + kvp.Value + ")");
|
|
Debug.Assert(false);
|
|
continue; // ignore this one
|
|
}
|
|
|
|
// Make sure it doesn't run off the end
|
|
if (offset + kvp.Value.Length > mAnattribs.Length) {
|
|
genLog.LogE("Invalid offset+len +" + offset.ToString("x6") +
|
|
" len=" + kvp.Value.Length + " file=" + mAnattribs.Length);
|
|
Debug.Assert(false);
|
|
continue; // ignore this one
|
|
}
|
|
|
|
if (mAnattribs[offset].IsInstructionStart) {
|
|
// Check length for instruction formatters. This can happen if you format
|
|
// a bunch of bytes as single-byte data items and then add a code entry
|
|
// point.
|
|
if (kvp.Value.Length != mAnattribs[offset].Length) {
|
|
genLog.LogW("+" + offset.ToString("x6") +
|
|
": unexpected length on instr format descriptor (" +
|
|
kvp.Value.Length + " vs " + mAnattribs[offset].Length + ")");
|
|
continue; // ignore this one
|
|
}
|
|
if (kvp.Value.Length == 1) {
|
|
// No operand to format!
|
|
genLog.LogW("+" + offset.ToString("x6") +
|
|
": unexpected format descriptor on single-byte op");
|
|
continue; // ignore this one
|
|
}
|
|
if (!kvp.Value.IsValidForInstruction) {
|
|
genLog.LogW("Descriptor not valid for instruction: " + kvp.Value);
|
|
continue; // ignore this one
|
|
}
|
|
} else if (mAnattribs[offset].IsInstruction) {
|
|
// Mid-instruction format.
|
|
genLog.LogW("+" + offset.ToString("x6") +
|
|
": unexpected mid-instruction format descriptor");
|
|
continue; // ignore this one
|
|
}
|
|
|
|
mAnattribs[offset].DataDescriptor = kvp.Value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Merges symbols from PlatformSymbols and ProjectSymbols into SymbolTable.
|
|
///
|
|
/// This should be done before any other symbol assignment or generation, so that user
|
|
/// labels take precedence (by virtue of overwriting the earlier platform symbols),
|
|
/// and auto label generation can propery generate a unique label.
|
|
///
|
|
/// Within platform symbol loading, later symbols should replace earlier symbols,
|
|
/// so that ordering of platform files behaves in an intuitive fashion.
|
|
/// </summary>
|
|
private void MergePlatformProjectSymbols() {
|
|
// Start by pulling in the platform symbols.
|
|
foreach (PlatformSymbols ps in PlatformSyms) {
|
|
foreach (Symbol sym in ps) {
|
|
SymbolTable[sym.Label] = sym;
|
|
}
|
|
}
|
|
|
|
// Now add project symbols, overwriting platform symbols with the same label.
|
|
foreach (KeyValuePair<string, DefSymbol> kvp in ProjectProps.ProjectSyms) {
|
|
SymbolTable[kvp.Value.Label] = kvp.Value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Merges symbols from UserLabels into SymbolTable. Existing entries with matching
|
|
/// labels will be replaced.
|
|
/// </summary>
|
|
private void UpdateAndMergeUserLabels() {
|
|
// We store symbols as label+value, but for a user label the actual value is
|
|
// the address of the offset the label is associated with. It's convenient
|
|
// to store labels as Symbols because we also want the Type value, and it avoids
|
|
// having to create Symbol objects on the fly. If the value in the UserLabel
|
|
// is wrong, we fix it here.
|
|
|
|
Dictionary<int, Symbol> changes = new Dictionary<int, Symbol>();
|
|
|
|
foreach (KeyValuePair<int, Symbol> kvp in UserLabels) {
|
|
int offset = kvp.Key;
|
|
Symbol sym = kvp.Value;
|
|
int expectedAddr = mAddrMap.OffsetToAddress(offset);
|
|
if (sym.Value != expectedAddr) {
|
|
Symbol newSym = new Symbol(sym.Label, expectedAddr, sym.SymbolSource,
|
|
sym.SymbolType);
|
|
Debug.WriteLine("Replacing label sym: " + sym + " --> " + newSym);
|
|
changes[offset] = newSym;
|
|
sym = newSym;
|
|
}
|
|
SymbolTable[kvp.Value.Label] = sym;
|
|
}
|
|
|
|
// If we updated any symbols, merge the changes back into UserLabels.
|
|
if (changes.Count != 0) {
|
|
Debug.WriteLine("...merging " + changes.Count + " symbols into UserLabels");
|
|
}
|
|
foreach (KeyValuePair<int, Symbol> kvp in changes) {
|
|
UserLabels[kvp.Key] = kvp.Value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Removes user labels from the symbol table if they're in the middle of an
|
|
/// instruction or multi-byte data area. (Easy way to cause this: hint a 3-byte
|
|
/// instruction as data, add a label to the middle byte, remove hints.)
|
|
///
|
|
/// Call this after the code and data analysis passes have completed. Any
|
|
/// references to the hidden labels will just fall through. It will be possible
|
|
/// to create multiple labels with the same name, because the app won't see them
|
|
/// in the symbol table.
|
|
/// </summary>
|
|
private void RemoveHiddenLabels() {
|
|
// TODO(someday): keep the symbols in the symbol table so we can't create a
|
|
// duplicate, but flag it as hidden. The symbol resolver will need to know
|
|
// to ignore it. Provide a way for users to purge them. We could just blow
|
|
// them out of UserLabels right now, but I'm trying to avoid discarding user-
|
|
// created data without permission.
|
|
foreach (KeyValuePair<int, Symbol> kvp in UserLabels) {
|
|
int offset = kvp.Key;
|
|
if (!mAnattribs[offset].IsStart) {
|
|
Debug.WriteLine("Stripping hidden label '" + kvp.Value.Label + "'");
|
|
SymbolTable.Remove(kvp.Value);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates references to symbols in the project/platform symbol tables.
|
|
///
|
|
/// For each instruction or data item that appears to reference an address, and
|
|
/// does not have a target offset, look for a matching address in the symbol tables.
|
|
///
|
|
/// This works pretty well for addresses, but is a little rough for constants.
|
|
///
|
|
/// Call this after the code and data analysis passes have completed. This doesn't
|
|
/// interact with labels, so the ordering there doesn't matter.
|
|
/// </summary>
|
|
public void GeneratePlatformSymbolRefs() {
|
|
bool checkNearby = ProjectProps.AnalysisParams.SeekNearbyTargets;
|
|
|
|
for (int offset = 0; offset < mAnattribs.Length; ) {
|
|
Anattrib attr = mAnattribs[offset];
|
|
if (attr.IsInstructionStart && attr.DataDescriptor == null &&
|
|
attr.OperandAddress >= 0 && attr.OperandOffset < 0) {
|
|
// Has an operand address, but not an offset, meaning it's a reference
|
|
// to an address outside the scope of the file. See if it has a
|
|
// platform symbol definition.
|
|
//
|
|
// It might seem unwise to examine the full symbol table, because it has
|
|
// non-project non-platform symbols in it. However, any matching user
|
|
// labels would have been applied already. Also, we want to ensure that
|
|
// conflicting user labels take precedence, e.g. creating a user label "COUT"
|
|
// will prevent a platform symbol with the same name from being visible.
|
|
// Using the full symbol table is potentially a tad less efficient than
|
|
// looking for a match exclusively in project/platform symbols, but it's
|
|
// the correct thing to do.
|
|
Symbol sym = SymbolTable.FindAddressByValue(attr.OperandAddress);
|
|
|
|
// If we didn't find it, check addr-1. This is very helpful when working
|
|
// with pointers, because it gets us references to "PTR+1" when "PTR" is
|
|
// defined. (It's potentially helpful in labeling the "near side" of an
|
|
// address map split as well, since the first byte past is an external
|
|
// address, and a label at the end of the current region will be offset
|
|
// from by this.)
|
|
if (sym == null && (attr.OperandAddress & 0xffff) > 0 && checkNearby) {
|
|
sym = SymbolTable.FindAddressByValue(attr.OperandAddress - 1);
|
|
}
|
|
// If that didn't work, try addr-2. Good for 24-bit addresses and jump
|
|
// vectors that start with a JMP instruction.
|
|
if (sym == null && (attr.OperandAddress & 0xffff) > 1 && checkNearby) {
|
|
sym = SymbolTable.FindAddressByValue(attr.OperandAddress - 2);
|
|
}
|
|
if (sym != null) {
|
|
mAnattribs[offset].DataDescriptor =
|
|
FormatDescriptor.Create(mAnattribs[offset].Length,
|
|
new WeakSymbolRef(sym.Label, WeakSymbolRef.Part.Low), false);
|
|
|
|
// Used to do this here; now do it in GenerateXrefs() so we can
|
|
// pick up user-edited operand formats that reference project symbols.
|
|
//(sym as DefSymbol).Xrefs.Add(new XrefSet.Xref(offset,
|
|
// XrefSet.XrefType.NameReference, 0));
|
|
}
|
|
}
|
|
|
|
if (attr.IsDataStart || attr.IsInlineDataStart) {
|
|
offset += attr.Length;
|
|
} else {
|
|
// Advance by one, not attr.Length, so we don't miss embedded instructions.
|
|
offset++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates labels for branch and data targets, and xref lists for all referenced
|
|
/// offsets. Also generates Xref entries for DefSymbols (for .eq directives).
|
|
///
|
|
/// Call this after the code and data analysis passes have completed.
|
|
/// </summary>
|
|
public void GenerateXrefs() {
|
|
// Xref generation. There are two general categories of references:
|
|
// (1) Numeric reference. Comes from instructions (e.g. "LDA $1000" or "BRA $1000")
|
|
// and Numeric/Address data items.
|
|
// (2) Symbolic reference. Comes from instructions and data with Symbol format
|
|
// descriptors. In some cases this may be a partial ref, e.g. "LDA #>label".
|
|
// The symbol's value may not match the operand, in which case an adjustment
|
|
// is applied.
|
|
//
|
|
// We want to tag both. So if "LDA $1000" becomes "LDA label-2", we want to
|
|
// add a numeric reference to the code at $1000, and a symbolic reference to the
|
|
// labe at $1002, that point back to the LDA instruction. These are presented
|
|
// slightly differently to the user. For a symbolic reference with no adjustment,
|
|
// we don't add the (redundant) numeric reference.
|
|
//
|
|
// In some cases the numeric reference will land in the middle of an instruction
|
|
// or multi-byte data area and won't be visible.
|
|
|
|
// Clear previous cross-reference data from project/platform symbols. These
|
|
// symbols don't have file offsets, so we can't store them in the main mXrefs
|
|
// list.
|
|
foreach (Symbol sym in SymbolTable) {
|
|
if (sym is DefSymbol) {
|
|
(sym as DefSymbol).Xrefs.Clear();
|
|
}
|
|
}
|
|
|
|
// Create a mapping from label (which must be unique) to file offset. This
|
|
// is different from UserLabels (which only has user-created labels, and is
|
|
// sorted by offset) and SymbolTable (which has constants and platform symbols,
|
|
// and uses the address as value rather than the offset).
|
|
SortedList<string, int> labelList = new SortedList<string, int>(mFileData.Length,
|
|
Asm65.Label.LABEL_COMPARER);
|
|
for (int offset = 0; offset < mAnattribs.Length; offset++) {
|
|
Anattrib attr = mAnattribs[offset];
|
|
if (attr.Symbol != null) {
|
|
try {
|
|
labelList.Add(attr.Symbol.Label, offset);
|
|
} catch (ArgumentException ex) {
|
|
// Duplicate UserLabel entries are stripped when projects are loaded,
|
|
// but it might be possible to cause this by hiding/unhiding a
|
|
// label (e.g. using hints to place it in the middle of an instruction).
|
|
// Just ignore the duplicate.
|
|
Debug.WriteLine("Xref ignoring duplicate label '" + attr.Symbol.Label +
|
|
"': " + ex.Message);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Walk through the Anattrib array, adding xref entries to things referenced
|
|
// by the entity at the current offset.
|
|
for (int offset = 0; offset < mAnattribs.Length; ) {
|
|
Anattrib attr = mAnattribs[offset];
|
|
|
|
XrefSet.XrefType xrefType = XrefSet.XrefType.Unknown;
|
|
if (attr.IsInstruction) {
|
|
OpDef op = CpuDef.GetOpDef(FileData[offset]);
|
|
if (op.IsBranch) {
|
|
xrefType = XrefSet.XrefType.BranchOperand;
|
|
} else {
|
|
xrefType = XrefSet.XrefType.InstrOperand;
|
|
}
|
|
} else if (attr.IsData || attr.IsInlineData) {
|
|
xrefType = XrefSet.XrefType.DataOperand;
|
|
}
|
|
|
|
bool hasZeroOffsetSym = false;
|
|
if (attr.DataDescriptor != null) {
|
|
FormatDescriptor dfd = attr.DataDescriptor;
|
|
if (dfd.FormatSubType == FormatDescriptor.SubType.Symbol) {
|
|
// For instructions with address operands that resolve in-file, grab
|
|
// the target offset.
|
|
int operandOffset = -1;
|
|
if (attr.IsInstructionStart) {
|
|
operandOffset = attr.OperandOffset;
|
|
}
|
|
|
|
// Is this a reference to a label?
|
|
if (labelList.TryGetValue(dfd.SymbolRef.Label, out int symOffset)) {
|
|
// Compute adjustment.
|
|
int adj = 0;
|
|
if (operandOffset >= 0) {
|
|
// We can compute (symOffset - operandOffset), but that gives us
|
|
// the offset adjustment, not the address adjustment.
|
|
adj = mAnattribs[symOffset].Address -
|
|
mAnattribs[operandOffset].Address;
|
|
}
|
|
|
|
AddXref(symOffset, new XrefSet.Xref(offset, true, xrefType, adj));
|
|
if (adj == 0) {
|
|
hasZeroOffsetSym = true;
|
|
}
|
|
} else if (SymbolTable.TryGetValue(dfd.SymbolRef.Label, out Symbol sym)) {
|
|
// Is this a reference to a project/platform symbol?
|
|
if (sym.SymbolSource == Symbol.Source.Project ||
|
|
sym.SymbolSource == Symbol.Source.Platform) {
|
|
DefSymbol defSym = sym as DefSymbol;
|
|
int adj = 0;
|
|
if (operandOffset >= 0) {
|
|
adj = defSym.Value - operandOffset;
|
|
}
|
|
defSym.Xrefs.Add(new XrefSet.Xref(offset, true, xrefType, adj));
|
|
} else {
|
|
Debug.WriteLine("NOTE: not xrefing '" + sym.Label + "'");
|
|
Debug.Assert(false); // not possible?
|
|
}
|
|
}
|
|
} else if (dfd.FormatSubType == FormatDescriptor.SubType.Address) {
|
|
// not expecting this format on an instruction operand
|
|
Debug.Assert(attr.IsData || attr.IsInlineData);
|
|
int operandOffset = RawData.GetWord(mFileData, offset,
|
|
dfd.Length, dfd.FormatType == FormatDescriptor.Type.NumericBE);
|
|
AddXref(operandOffset, new XrefSet.Xref(offset, false, xrefType, 0));
|
|
}
|
|
|
|
// Look for instruction offset references. We skip this if we've already
|
|
// added a reference from a symbol with zero adjustment, since that would
|
|
// just leave a duplicate entry. (The symbolic ref wins because we need
|
|
// it for the label localizer and possibly the label refactorer.)
|
|
if (!hasZeroOffsetSym && attr.IsInstructionStart && attr.OperandOffset >= 0) {
|
|
AddXref(attr.OperandOffset, new XrefSet.Xref(offset, false, xrefType, 0));
|
|
}
|
|
}
|
|
|
|
if (attr.IsDataStart) {
|
|
// There shouldn't be data items inside of other data items.
|
|
offset += attr.Length;
|
|
} else {
|
|
// Advance by one, not attr.Length, so we don't miss embedded instructions.
|
|
offset++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Adds an Xref entry to an XrefSet. The XrefSet will be created if necessary.
|
|
/// </summary>
|
|
/// <param name="offset">File offset for which cross-references are being noted.</param>
|
|
/// <param name="xref">Cross reference to add to the set.</param>
|
|
private void AddXref(int offset, XrefSet.Xref xref) {
|
|
if (!mXrefs.TryGetValue(offset, out XrefSet xset)) {
|
|
xset = mXrefs[offset] = new XrefSet();
|
|
}
|
|
xset.Add(xref);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the XrefSet for the specified offset. May return null if the set is
|
|
/// empty.
|
|
/// </summary>
|
|
public XrefSet GetXrefSet(int offset) {
|
|
mXrefs.TryGetValue(offset, out XrefSet xset);
|
|
return xset; // will be null if not found
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates the list of project/platform symbols that are being used. Any
|
|
/// DefSymbol with a non-empty Xrefs is included. Previous contents are cleared.
|
|
///
|
|
/// The list is sorted primarily by value, secondarily by symbol name.
|
|
///
|
|
/// Call this after Xrefs are generated.
|
|
/// </summary>
|
|
private void GenerateActiveDefSymbolList() {
|
|
ActiveDefSymbolList.Clear();
|
|
|
|
foreach (Symbol sym in SymbolTable) {
|
|
if (!(sym is DefSymbol)) {
|
|
continue;
|
|
}
|
|
DefSymbol defSym = sym as DefSymbol;
|
|
if (defSym.Xrefs.Count == 0) {
|
|
continue;
|
|
}
|
|
ActiveDefSymbolList.Add(defSym);
|
|
}
|
|
|
|
// We could make symbol source the primary sort key, so that all platform
|
|
// symbols appear before all project symbols. Not sure if that's better.
|
|
//
|
|
// Could also skip this by replacing the earlier foreach with a walk through
|
|
// SymbolTable.mSymbolsByValue, but I'm not sure that should be exposed.
|
|
ActiveDefSymbolList.Sort(delegate (DefSymbol a, DefSymbol b) {
|
|
if (a.Value < b.Value) {
|
|
return -1;
|
|
} else if (a.Value > b.Value) {
|
|
return 1;
|
|
}
|
|
return Asm65.Label.LABEL_COMPARER.Compare(a.Label, b.Label);
|
|
});
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks some stuff. Problems are handled with assertions, so this is only
|
|
/// useful in debug builds.
|
|
/// </summary>
|
|
public void Validate() {
|
|
// Confirm that we can walk through the file, stepping directly from the start
|
|
// of one thing to the start of the next.
|
|
int offset = 0;
|
|
while (offset < mFileData.Length) {
|
|
Anattrib attr = mAnattribs[offset];
|
|
Debug.Assert(attr.IsStart);
|
|
Debug.Assert(attr.Length != 0);
|
|
offset += attr.Length;
|
|
|
|
// Sometimes embedded instructions continue past the "outer" instruction,
|
|
// usually because we're misinterpreting the code. We need to deal with
|
|
// that here.
|
|
int extraInstrBytes = 0;
|
|
while (offset < mFileData.Length && mAnattribs[offset].IsInstruction &&
|
|
!mAnattribs[offset].IsInstructionStart) {
|
|
extraInstrBytes++;
|
|
offset++;
|
|
}
|
|
//if (extraInstrBytes > 0) { Debug.WriteLine("EIB=" + extraInstrBytes); }
|
|
// Max instruction len is 4, so the stray part must be shorter.
|
|
Debug.Assert(extraInstrBytes < 4);
|
|
}
|
|
Debug.Assert(offset == mFileData.Length);
|
|
|
|
// Confirm that all bytes are tagged as code, data, or inline data. The Asserts
|
|
// in Anattrib should confirm that nothing is tagged as more than one thing.
|
|
for (offset = 0; offset < mAnattribs.Length; offset++) {
|
|
Anattrib attr = mAnattribs[offset];
|
|
Debug.Assert(attr.IsInstruction || attr.IsInlineData || attr.IsData);
|
|
}
|
|
|
|
// Confirm that there are no Default format entries in OperandFormats.
|
|
foreach (KeyValuePair<int, FormatDescriptor> kvp in OperandFormats) {
|
|
Debug.Assert(kvp.Value.FormatType != FormatDescriptor.Type.Default);
|
|
Debug.Assert(kvp.Value.FormatType != FormatDescriptor.Type.REMOVE);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates a ChangeSet that merges the FormatDescriptors in the new list into
|
|
/// OperandFormats.
|
|
///
|
|
/// All existing descriptors that overlap with new descriptors will be removed.
|
|
/// In cases where old and new descriptors have the same starting offset, this
|
|
/// will be handled with a single change object.
|
|
///
|
|
/// If old and new descriptors are identical, no change object will be generated.
|
|
/// It's possible for this to return an empty change set.
|
|
/// </summary>
|
|
/// <param name="newList">List of new format descriptors.</param>
|
|
/// <returns>Change set.</returns>
|
|
public ChangeSet GenerateFormatMergeSet(SortedList<int, FormatDescriptor> newList) {
|
|
Debug.WriteLine("Generating format merge set...");
|
|
ChangeSet cs = new ChangeSet(newList.Count * 2);
|
|
|
|
// The Keys and Values properties are documented to return the internal data
|
|
// structure, not make a copy, so this will be fast.
|
|
IList<int> mainKeys = OperandFormats.Keys;
|
|
IList<FormatDescriptor> mainValues = OperandFormats.Values;
|
|
IList<int> newKeys = newList.Keys;
|
|
IList<FormatDescriptor> newValues = newList.Values;
|
|
|
|
// The basic idea is to walk through the new list, checking each entry for
|
|
// conflicts with the main list. If there's no conflict, we create a change
|
|
// object for the new item. If there is a conflict, we resolve it appropriately.
|
|
//
|
|
// The check on the main list is very fast because both lists are in sorted
|
|
// order, so we can just walk the main list forward. If a main-list entry
|
|
// conflicts, we create a removal object, and advance the main index.
|
|
int mainIndex = 0;
|
|
int newIndex = 0;
|
|
while (newIndex < newKeys.Count) {
|
|
int newOffset = newKeys[newIndex];
|
|
int newLength = newValues[newIndex].Length;
|
|
if (mainIndex >= mainKeys.Count) {
|
|
// We've run off the end of the main list. Just add the new item.
|
|
UndoableChange uc = UndoableChange.CreateActualOperandFormatChange(
|
|
newOffset, null, newValues[newIndex]);
|
|
cs.AddNonNull(uc);
|
|
newIndex++;
|
|
continue;
|
|
}
|
|
|
|
// Check for overlap by computing the intersection. Start and end form two
|
|
// points; the intersection is the largest of the start points and the
|
|
// smallest of the end points. If the result of the computation puts end before
|
|
// start, there's no overlap.
|
|
int mainOffset = mainKeys[mainIndex];
|
|
int mainLength = mainValues[mainIndex].Length;
|
|
Debug.Assert(newLength > 0 && mainLength > 0);
|
|
int interStart = Math.Max(mainOffset, newOffset);
|
|
int interEnd = Math.Min(mainOffset + mainLength, newOffset + newLength);
|
|
// exclusive end point, so interEnd == interStart means no overlap
|
|
if (interEnd > interStart) {
|
|
Debug.WriteLine("Found overlap: main(+" + mainOffset.ToString("x6") +
|
|
"," + mainLength + ") : new(+" + newOffset.ToString("x6") +
|
|
"," + newLength + ")");
|
|
|
|
// See if the initial offsets are identical. If so, put the add and
|
|
// remove into a single change. This isn't strictly necessary, but it's
|
|
// slightly more efficient.
|
|
if (mainOffset == newOffset) {
|
|
// Check to see if the descriptors are identical. If so, ignore this.
|
|
if (mainValues[mainIndex] == newValues[newIndex]) {
|
|
Debug.WriteLine(" --> no-op change " + newValues[newIndex]);
|
|
} else {
|
|
Debug.WriteLine(" --> replace change " + newValues[newIndex]);
|
|
UndoableChange uc = UndoableChange.CreateActualOperandFormatChange(
|
|
newOffset, mainValues[mainIndex], newValues[newIndex]);
|
|
cs.AddNonNull(uc);
|
|
}
|
|
} else {
|
|
// Remove the old entry, add the new entry.
|
|
Debug.WriteLine(" --> remove/add change " + newValues[newIndex]);
|
|
UndoableChange ruc = UndoableChange.CreateActualOperandFormatChange(
|
|
mainOffset, mainValues[mainIndex], null);
|
|
UndoableChange auc = UndoableChange.CreateActualOperandFormatChange(
|
|
newOffset, null, newValues[newIndex]);
|
|
cs.AddNonNull(ruc);
|
|
cs.AddNonNull(auc);
|
|
}
|
|
newIndex++;
|
|
|
|
// Remove all other main-list entries that overlap with this one.
|
|
while (++mainIndex < mainKeys.Count) {
|
|
mainOffset = mainKeys[mainIndex];
|
|
mainLength = mainValues[mainIndex].Length;
|
|
interStart = Math.Max(mainOffset, newOffset);
|
|
interEnd = Math.Min(mainOffset + mainLength, newOffset + newLength);
|
|
// exclusive end point, so interEnd == interStart means no overlap
|
|
if (interEnd <= interStart) {
|
|
break;
|
|
}
|
|
Debug.WriteLine(" also remove +" + mainOffset.ToString("x6") +
|
|
mainValues[mainIndex]);
|
|
UndoableChange uc = UndoableChange.CreateActualOperandFormatChange(
|
|
mainOffset, mainValues[mainIndex], null);
|
|
cs.AddNonNull(uc);
|
|
}
|
|
} else {
|
|
// No overlap. If the main entry is earlier, we can cross it off the list
|
|
// and advance to the next one. Otherwise, we add the change and advance
|
|
// that list.
|
|
if (mainOffset < newOffset) {
|
|
mainIndex++;
|
|
} else {
|
|
Debug.WriteLine("Add non-overlap " + newOffset.ToString("x6") +
|
|
newValues[newIndex]);
|
|
UndoableChange uc = UndoableChange.CreateActualOperandFormatChange(
|
|
newOffset, null, newValues[newIndex]);
|
|
cs.AddNonNull(uc);
|
|
newIndex++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Trim away excess capacity, since this will probably be sitting in an undo
|
|
// list for a long time.
|
|
cs.TrimExcess();
|
|
Debug.WriteLine("Total " + cs.Count + " changes");
|
|
return cs;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the analyzer attributes for the specified byte offset.
|
|
///
|
|
/// Bear in mind that Anattrib is a struct, and thus the return value is a copy.
|
|
/// </summary>
|
|
public Anattrib GetAnattrib(int offset) {
|
|
return mAnattribs[offset];
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns true if the offset has a long comment or note. Used for determining how to
|
|
/// split up a data area. Currently not returning true for an end-of-line comment.
|
|
/// </summary>
|
|
/// <param name="offset">Offset of interest.</param>
|
|
/// <returns>True if a comment or note was found.</returns>
|
|
public bool HasCommentOrNote(int offset) {
|
|
return (LongComments.ContainsKey(offset) ||
|
|
Notes.ContainsKey(offset));
|
|
}
|
|
|
|
/// <summary>
|
|
/// True if an "undo" operation is available.
|
|
/// </summary>
|
|
public bool CanUndo { get { return mUndoTop > 0; } }
|
|
|
|
/// <summary>
|
|
/// True if a "redo" operation is available.
|
|
/// </summary>
|
|
public bool CanRedo { get { return mUndoTop < mUndoList.Count; } }
|
|
|
|
/// <summary>
|
|
/// True if something has changed since the last time the file was saved.
|
|
/// </summary>
|
|
public bool IsDirty { get { return mUndoTop != mUndoSaveIndex; } }
|
|
|
|
/// <summary>
|
|
/// Sets the save index equal to the undo position. Do this after the file has
|
|
/// been successfully saved.
|
|
/// </summary>
|
|
public void ResetDirtyFlag() {
|
|
mUndoSaveIndex = mUndoTop;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the next undo operation, and moves the pointer to the previous item.
|
|
/// </summary>
|
|
public ChangeSet PopUndoSet() {
|
|
if (!CanUndo) {
|
|
throw new Exception("Can't undo");
|
|
}
|
|
Debug.WriteLine("PopUndoSet: returning entry " + (mUndoTop - 1) + ": " +
|
|
mUndoList[mUndoTop - 1]);
|
|
return mUndoList[--mUndoTop];
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the next redo operation, and moves the pointer to the next item.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
public ChangeSet PopRedoSet() {
|
|
if (!CanRedo) {
|
|
throw new Exception("Can't redo");
|
|
}
|
|
Debug.WriteLine("PopRedoSet: returning entry " + mUndoTop + ": " +
|
|
mUndoList[mUndoTop]);
|
|
return mUndoList[mUndoTop++];
|
|
}
|
|
|
|
/// <summary>
|
|
/// Adds a change set to the undo list. All redo operations above it on the
|
|
/// stack are removed.
|
|
///
|
|
/// We currently allow empty sets.
|
|
/// </summary>
|
|
/// <param name="changeSet">Set to push.</param>
|
|
public void PushChangeSet(ChangeSet changeSet) {
|
|
Debug.WriteLine("PushChangeSet: adding " + changeSet);
|
|
|
|
// Remove all of the "redo" entries from the current position to the end.
|
|
if (mUndoTop < mUndoList.Count) {
|
|
Debug.WriteLine("PushChangeSet: removing " + (mUndoList.Count - mUndoTop) +
|
|
" entries");
|
|
mUndoList.RemoveRange(mUndoTop, mUndoList.Count - mUndoTop);
|
|
}
|
|
|
|
mUndoList.Add(changeSet);
|
|
mUndoTop = mUndoList.Count;
|
|
}
|
|
|
|
public string DebugGetUndoRedoHistory() {
|
|
StringBuilder sb = new StringBuilder();
|
|
sb.Append("Bracketed change will be overwritten by next action\r\n\r\n");
|
|
|
|
for (int i = 0; i < mUndoList.Count; i++) {
|
|
ChangeSet cs = mUndoList[i];
|
|
|
|
char lbr, rbr;
|
|
if (i == mUndoTop) {
|
|
lbr = '[';
|
|
rbr = ']';
|
|
} else {
|
|
lbr = rbr = ' ';
|
|
}
|
|
sb.AppendFormat("{0}{3,3:D}{1}{2}: {4} change{5}\r\n",
|
|
lbr, rbr, i == mUndoSaveIndex ? "*" : " ",
|
|
i, cs.Count, cs.Count == 1 ? "" : "s");
|
|
|
|
for (int j = 0; j < cs.Count; j++) {
|
|
UndoableChange uc = cs[j];
|
|
sb.AppendFormat(" type={0} offset=+{1} reReq={2}\r\n",
|
|
uc.Type, uc.HasOffset ? uc.Offset.ToString("x6") : "N/A",
|
|
uc.ReanalysisRequired);
|
|
}
|
|
}
|
|
if (mUndoTop == mUndoList.Count) {
|
|
sb.AppendFormat("[ - ]{0}\r\n", mUndoTop == mUndoSaveIndex ? "*" : " ");
|
|
}
|
|
|
|
return sb.ToString();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Applies the changes to the project, and updates the display.
|
|
/// </summary>
|
|
/// <param name="cs">Set of changes to apply.</param>
|
|
/// <param name="backward">If set, undo the changes instead.</param>
|
|
/// <param name="affectedOffsets">List of offsets affected by change.</param>
|
|
/// <returns>An indication of the level of reanalysis required. If this returns None,
|
|
/// the list of offsets to update will be in affectedOffsets.</returns>
|
|
public UndoableChange.ReanalysisScope ApplyChanges(ChangeSet cs, bool backward,
|
|
out RangeSet affectedOffsets) {
|
|
affectedOffsets = new RangeSet();
|
|
|
|
UndoableChange.ReanalysisScope needReanalysis = UndoableChange.ReanalysisScope.None;
|
|
|
|
// TODO(maybe): if changes overlap, we need to apply them in reverse order when
|
|
// "backward" is set. This requires a reverse-order enumerator from
|
|
// ChangeSet. Not currently needed.
|
|
foreach (UndoableChange uc in cs) {
|
|
object oldValue, newValue;
|
|
|
|
// Unpack change, flipping old/new for undo.
|
|
if (!backward) {
|
|
oldValue = uc.OldValue;
|
|
newValue = uc.NewValue;
|
|
} else {
|
|
oldValue = uc.NewValue;
|
|
newValue = uc.OldValue;
|
|
}
|
|
int offset = uc.Offset;
|
|
|
|
switch (uc.Type) {
|
|
case UndoableChange.ChangeType.Dummy:
|
|
//if (uc.ReanalysisRequired == UndoableChange.ReanalysisFlags.None) {
|
|
// affectedOffsets.AddRange(0, FileData.Length - 1);
|
|
//}
|
|
break;
|
|
case UndoableChange.ChangeType.SetAddress: {
|
|
AddressMap addrMap = AddrMap;
|
|
if (addrMap.Get(offset) != (int)oldValue) {
|
|
Debug.WriteLine("GLITCH: old address value mismatch (" +
|
|
addrMap.Get(offset) + " vs " + (int)oldValue + ")");
|
|
Debug.Assert(false);
|
|
}
|
|
addrMap.Set(offset, (int)newValue);
|
|
|
|
Debug.WriteLine("Map offset +" + offset.ToString("x6") + " to $" +
|
|
((int)newValue).ToString("x6"));
|
|
|
|
// ignore affectedOffsets
|
|
Debug.Assert(uc.ReanalysisRequired ==
|
|
UndoableChange.ReanalysisScope.CodeAndData);
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetTypeHint: {
|
|
// Always requires full code+data re-analysis.
|
|
ApplyTypeHints((TypedRangeSet)oldValue, (TypedRangeSet)newValue);
|
|
// ignore affectedOffsets
|
|
Debug.Assert(uc.ReanalysisRequired ==
|
|
UndoableChange.ReanalysisScope.CodeAndData);
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetStatusFlagOverride: {
|
|
if (StatusFlagOverrides[offset] != (StatusFlags)oldValue) {
|
|
Debug.WriteLine("GLITCH: old status flag mismatch (" +
|
|
StatusFlagOverrides[offset] + " vs " +
|
|
(StatusFlags)oldValue + ")");
|
|
Debug.Assert(false);
|
|
}
|
|
StatusFlagOverrides[offset] = (StatusFlags)newValue;
|
|
// ignore affectedOffsets
|
|
Debug.Assert(uc.ReanalysisRequired ==
|
|
UndoableChange.ReanalysisScope.CodeAndData);
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetLabel: {
|
|
// NOTE: this is about managing changes to UserLabels. Adding
|
|
// or removing a user-defined label requires a full reanalysis,
|
|
// even if there was already an auto-generated label present,
|
|
// so we don't need to undo/redo Anattribs for anything except
|
|
// for renaming a user-defined label.
|
|
UserLabels.TryGetValue(offset, out Symbol oldSym);
|
|
if (oldSym != (Symbol) oldValue) {
|
|
Debug.WriteLine("GLITCH: old label value mismatch ('" +
|
|
oldSym + "' vs '" + oldValue + "')");
|
|
Debug.Assert(false);
|
|
}
|
|
|
|
if (newValue == null) {
|
|
// We're removing a user label.
|
|
UserLabels.Remove(offset);
|
|
SymbolTable.Remove((Symbol)oldValue); // unnecessary?
|
|
Debug.Assert(uc.ReanalysisRequired ==
|
|
UndoableChange.ReanalysisScope.DataOnly);
|
|
} else {
|
|
// We're adding or renaming a user label.
|
|
//
|
|
// We should not be changing a label to the same value as an
|
|
// existing label -- the dialog should have prevented it.
|
|
// This is important because, if we edit a label to match an
|
|
// auto-generated label, we'll have a duplicate label unless we
|
|
// do a full code+data reanalysis. If we're okay with reanalyzing
|
|
// on user-label renames, we can allow such conflicts.
|
|
if (oldValue != null) {
|
|
SymbolTable.Remove((Symbol)oldValue);
|
|
}
|
|
UserLabels[offset] = (Symbol)newValue;
|
|
//SymbolTable[((Symbol)newValue).Label] = (Symbol)newValue;
|
|
SymbolTable.Add((Symbol)newValue);
|
|
Debug.Assert(oldSym != null || uc.ReanalysisRequired ==
|
|
UndoableChange.ReanalysisScope.DataOnly);
|
|
}
|
|
|
|
if (uc.ReanalysisRequired == UndoableChange.ReanalysisScope.None) {
|
|
// Shouldn't really be "changing" from null to null, but
|
|
// it's legal, so don't blow up if it happens.
|
|
// (The assert on SymbolSource is older -- we now only care about
|
|
// what's in UserLabels, which are always Source=User.)
|
|
Debug.Assert((oldValue == null && newValue == null) ||
|
|
(((Symbol)oldValue).SymbolSource == Symbol.Source.User &&
|
|
((Symbol)newValue).SymbolSource == Symbol.Source.User));
|
|
// Not doing a full refresh, so keep this up to date.
|
|
mAnattribs[offset].Symbol = (Symbol)newValue;
|
|
|
|
if (oldValue != null) {
|
|
// Update everything in Anattribs and OperandFormats that
|
|
// referenced the old symbol.
|
|
RefactorLabel(offset, ((Symbol)oldValue).Label);
|
|
}
|
|
|
|
affectedOffsets.Add(offset);
|
|
|
|
// Use the cross-reference table to identify the offsets that
|
|
// we need to update.
|
|
if (mXrefs.TryGetValue(offset, out XrefSet xrefs)) {
|
|
foreach (XrefSet.Xref xr in xrefs) {
|
|
// This isn't quite right -- in theory we should be adding
|
|
// all offsets that are part of the instruction, so that
|
|
// affectedOffsets can hold a contiguous range instead of
|
|
// a collection of opcode offsets. In practice, for a
|
|
// label change, it shouldn't matter.
|
|
affectedOffsets.Add(xr.Offset);
|
|
}
|
|
}
|
|
} else {
|
|
// We're not calling RefactorLabel() here because we should
|
|
// only be doing the reanalysis if we're adding or removing
|
|
// the label, not renaming it. If that changes, we'll need
|
|
// to do the refactor here, though we can skip Anattribs work.
|
|
Debug.Assert(oldValue == null || newValue == null);
|
|
}
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetOperandFormat: {
|
|
// Note this is used for data/inline-data as well as instructions.
|
|
OperandFormats.TryGetValue(offset, out FormatDescriptor current);
|
|
if (current != (FormatDescriptor)oldValue) {
|
|
Debug.WriteLine("GLITCH: old operand format mismatch (" +
|
|
current + " vs " + oldValue + ")");
|
|
Debug.Assert(false);
|
|
}
|
|
if (newValue == null) {
|
|
OperandFormats.Remove(offset);
|
|
mAnattribs[offset].DataDescriptor = null;
|
|
} else {
|
|
OperandFormats[offset] = mAnattribs[offset].DataDescriptor =
|
|
(FormatDescriptor)newValue;
|
|
}
|
|
if (uc.ReanalysisRequired == UndoableChange.ReanalysisScope.None) {
|
|
// Add every offset in the range. The length might be changing
|
|
// (e.g. an offset with a single byte is now the start of a
|
|
// 10-byte string), so touch everything that was affected by
|
|
// the old descriptor or is affected by the new descriptor.
|
|
// [This may no longer be necessary -- size changes now
|
|
// require reanalysis.]
|
|
int afctLen = 1;
|
|
if (oldValue != null) {
|
|
afctLen =
|
|
Math.Max(afctLen, ((FormatDescriptor)oldValue).Length);
|
|
}
|
|
if (newValue != null) {
|
|
afctLen =
|
|
Math.Max(afctLen, ((FormatDescriptor)newValue).Length);
|
|
}
|
|
|
|
for (int i = offset; i < offset + afctLen; i++) {
|
|
affectedOffsets.Add(i);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetComment: {
|
|
if (!Comments[offset].Equals(oldValue)) {
|
|
Debug.WriteLine("GLITCH: old comment value mismatch ('" +
|
|
Comments[offset] + "' vs '" + oldValue + "')");
|
|
Debug.Assert(false);
|
|
}
|
|
Comments[offset] = (string)newValue;
|
|
|
|
// Only affects this offset.
|
|
affectedOffsets.Add(offset);
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetLongComment: {
|
|
LongComments.TryGetValue(offset, out MultiLineComment current);
|
|
if (current != (MultiLineComment)oldValue) {
|
|
Debug.WriteLine("GLITCH: old long comment value mismatch ('" +
|
|
current + "' vs '" + oldValue + "')");
|
|
Debug.Assert(false);
|
|
}
|
|
if (newValue == null) {
|
|
LongComments.Remove(offset);
|
|
} else {
|
|
LongComments[offset] = (MultiLineComment)newValue;
|
|
}
|
|
|
|
// Only affects this offset.
|
|
affectedOffsets.Add(offset);
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetNote: {
|
|
Notes.TryGetValue(offset, out MultiLineComment current);
|
|
if (current != (MultiLineComment)oldValue) {
|
|
Debug.WriteLine("GLITCH: old note value mismatch ('" +
|
|
current + "' vs '" + oldValue + "')");
|
|
Debug.Assert(false);
|
|
}
|
|
if (newValue == null) {
|
|
Notes.Remove(offset);
|
|
} else {
|
|
Notes[offset] = (MultiLineComment)newValue;
|
|
}
|
|
|
|
// Only affects this offset.
|
|
affectedOffsets.Add(offset);
|
|
}
|
|
break;
|
|
case UndoableChange.ChangeType.SetProjectProperties: {
|
|
bool needExternalFileReload = !CommonUtil.Container.StringListEquals(
|
|
((ProjectProperties)oldValue).PlatformSymbolFileIdentifiers,
|
|
((ProjectProperties)newValue).PlatformSymbolFileIdentifiers,
|
|
null /*StringComparer.InvariantCulture*/);
|
|
needExternalFileReload |= !CommonUtil.Container.StringListEquals(
|
|
((ProjectProperties)oldValue).ExtensionScriptFileIdentifiers,
|
|
((ProjectProperties)newValue).ExtensionScriptFileIdentifiers,
|
|
null);
|
|
|
|
// ProjectProperties are mutable, so create a new object that's
|
|
// a clone of the one that will live in the undo buffer.
|
|
ProjectProps = new ProjectProperties((ProjectProperties)newValue);
|
|
|
|
// Most of the properties are simply used during the reanalysis
|
|
// process. This must be set explicitly. NOTE: replacing this
|
|
// could cause cached data (such as Formatter strings) to be
|
|
// discarded, so ideally we wouldn't do this unless we know the
|
|
// CPU definition has changed (or we know that GetBestMatch is
|
|
// memoizing results and will return the same object).
|
|
Debug.WriteLine("Replacing CPU def object");
|
|
UpdateCpuDef();
|
|
|
|
if (needExternalFileReload) {
|
|
LoadExternalFiles();
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
needReanalysis |= uc.ReanalysisRequired;
|
|
}
|
|
|
|
return needReanalysis;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all symbolic references to the old label.
|
|
/// </summary>
|
|
/// <param name="labelOffset">Offset with the just-renamed label.</param>
|
|
/// <param name="oldLabel">Previous value.</param>
|
|
private void RefactorLabel(int labelOffset, string oldLabel) {
|
|
if (!mXrefs.TryGetValue(labelOffset, out XrefSet xrefs)) {
|
|
// This can happen if you add a label in the middle of nowhere and rename it.
|
|
Debug.WriteLine("RefactorLabel: no references to " + oldLabel);
|
|
return;
|
|
}
|
|
|
|
string newLabel = mAnattribs[labelOffset].Symbol.Label;
|
|
|
|
//
|
|
// Update format descriptors in Anattribs.
|
|
//
|
|
foreach (XrefSet.Xref xr in xrefs) {
|
|
FormatDescriptor dfd = mAnattribs[xr.Offset].DataDescriptor;
|
|
if (dfd == null) {
|
|
// Should be a data target reference here? Where'd the xref come from?
|
|
Debug.Assert(false);
|
|
continue;
|
|
}
|
|
if (!dfd.HasSymbol) {
|
|
// The auto-gen stuff would have created a symbol, but the user can
|
|
// override that and display as e.g. hex.
|
|
continue;
|
|
}
|
|
if (!Label.LABEL_COMPARER.Equals(oldLabel, dfd.SymbolRef.Label)) {
|
|
// This can happen if the xref is based on the operand offset,
|
|
// but the user picked a different symbol. The xref generator
|
|
// creates entries for both target offsets, but only one will
|
|
// have a matching label.
|
|
continue;
|
|
}
|
|
|
|
mAnattribs[xr.Offset].DataDescriptor = FormatDescriptor.Create(
|
|
dfd.Length, new WeakSymbolRef(newLabel, dfd.SymbolRef.ValuePart),
|
|
dfd.FormatType == FormatDescriptor.Type.NumericBE);
|
|
}
|
|
|
|
//
|
|
// Update value in OperandFormats.
|
|
//
|
|
foreach (XrefSet.Xref xr in xrefs) {
|
|
if (!OperandFormats.TryGetValue(xr.Offset, out FormatDescriptor dfd)) {
|
|
// Probably an auto-generated symbol ref, so no entry in OperandFormats.
|
|
continue;
|
|
}
|
|
if (!dfd.HasSymbol) {
|
|
continue;
|
|
}
|
|
if (!Label.LABEL_COMPARER.Equals(oldLabel, dfd.SymbolRef.Label)) {
|
|
continue;
|
|
}
|
|
|
|
Debug.WriteLine("Replacing symbol at +" + xr.Offset.ToString("x6") +
|
|
" with " + newLabel);
|
|
OperandFormats[xr.Offset] = FormatDescriptor.Create(
|
|
dfd.Length, new WeakSymbolRef(newLabel, dfd.SymbolRef.ValuePart),
|
|
dfd.FormatType == FormatDescriptor.Type.NumericBE);
|
|
}
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
/// Applies the values in the set to the project hints.
|
|
/// </summary>
|
|
/// <param name="oldSet">Previous values; must match current contents.</param>
|
|
/// <param name="newSet">Values to apply.</param>
|
|
private void ApplyTypeHints(TypedRangeSet oldSet, TypedRangeSet newSet) {
|
|
CodeAnalysis.TypeHint[] hints = TypeHints;
|
|
foreach (TypedRangeSet.Tuple tuple in newSet) {
|
|
CodeAnalysis.TypeHint curType = hints[tuple.Value];
|
|
if (!oldSet.GetType(tuple.Value, out int oldType) || oldType != (int)curType) {
|
|
Debug.WriteLine("Type mismatch at " + tuple.Value);
|
|
Debug.Assert(false);
|
|
}
|
|
|
|
//Debug.WriteLine("Set +" + tuple.Value.ToString("x6") + " to " +
|
|
// (CodeAnalysis.TypeHint)tuple.Type + " (was " +
|
|
// curType + ")");
|
|
|
|
hints[tuple.Value] = (CodeAnalysis.TypeHint)tuple.Type;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Finds a label by name. SymbolTable must be populated.
|
|
/// </summary>
|
|
/// <param name="name">Label to find.</param>
|
|
/// <returns>File offset associated with label, or -1 if not found.</returns>
|
|
public int FindLabelByName(string name) {
|
|
// We're interested in user labels and auto-generated labels. Do a lookup in
|
|
// SymbolTable to find the symbol, then if it's user or auto, we do a second
|
|
// search to find the file offset it's associated with. The second search
|
|
// requires a linear walk through anattribs; if we do this often we'll want to
|
|
// maintain a symbol-to-offset structure.
|
|
//
|
|
// This will not find "hidden" labels, i.e. labels that are in the middle of an
|
|
// instruction or multi-byte data area, because those are removed from SymbolTable.
|
|
if (!SymbolTable.TryGetValue(name, out Symbol sym)) {
|
|
return -1;
|
|
}
|
|
if (sym.SymbolSource != Symbol.Source.Auto && sym.SymbolSource != Symbol.Source.User) {
|
|
return -1;
|
|
}
|
|
for (int i = 0; i < mAnattribs.Length; i++) {
|
|
if (mAnattribs[i].Symbol == sym) {
|
|
return i;
|
|
}
|
|
}
|
|
Debug.WriteLine("NOTE: symbol '" + name + "' exists, but wasn't found in labels");
|
|
return -1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// For debugging purposes, get some information about the currently loaded
|
|
/// extension scripts.
|
|
/// </summary>
|
|
public string DebugGetLoadedScriptInfo() {
|
|
return mScriptManager.DebugGetLoadedScriptInfo();
|
|
}
|
|
}
|
|
}
|