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6502bench/SourceGen/LabelFileGenerator.cs

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/*
* Copyright 2019 faddenSoft
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
namespace SourceGen {
/// <summary>
/// Label file generator.
/// </summary>
public class LabelFileGenerator {
public enum LabelFmt {
Unknown = 0,
VICE,
}
private DisasmProject mProject;
private LabelFmt mFormat;
private bool mIncludeAutoLabels;
public LabelFileGenerator(DisasmProject project, LabelFmt format, bool includeAutoLabels) {
mProject = project;
mFormat = format;
mIncludeAutoLabels = includeAutoLabels;
}
public void Generate(StreamWriter outStream) {
List<Symbol> symList = new List<Symbol>();
foreach (Symbol sym in mProject.SymbolTable) {
bool include;
switch (sym.SymbolSource) {
case Symbol.Source.User:
case Symbol.Source.AddrPreLabel:
include = true;
break;
case Symbol.Source.Auto:
include = mIncludeAutoLabels;
break;
case Symbol.Source.Project:
case Symbol.Source.Platform:
case Symbol.Source.Variable:
default:
include = false;
break;
}
if (include) {
symList.Add(sym);
}
}
// Sort alphabetically. Not necessary, but it could make a "diff" easier to read.
symList.Sort((a, b) => Symbol.Compare(Symbol.SymbolSortField.Name, true, a, b));
Debug.Assert(mFormat == LabelFmt.VICE);
// VICE format is "add_label <address> <label>", but may be abbreviated "al".
// We could also use ACME format ("labelname = $1234 ; Maybe a comment").
foreach (Symbol sym in symList) {
// VICE only keeps one copy of each label, so local labels need to include the
// uniquifier. The UNIQUE_TAG_CHAR may not be accepted, so replace it with '_'.
string label = sym.Label;
label = label.Replace(Symbol.UNIQUE_TAG_CHAR, '_');
if (sym.IsNonUnique) {
// Add the cc65 prefix convention for local labels.
label = '@' + label;
}
// The cc65 docs (https://www.cc65.org/doc/debugging-4.html) say all labels
// must be prefaced with '.'. VICE rejects labels that start with a letter.
label = '.' + label;
outStream.WriteLine("al " + sym.Value.ToString("x6") + " " + label);
}
}
}
}