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6502bench/SourceGen/RuntimeData/Apple/IIgs-Toolbox.cs

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/*
* Copyright 2018 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 PluginCommon;
/*
# pea ...
# pea ...
# ldx #function
# jsl $e10000
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*/
namespace RuntimeData.Apple {
public class IIgsToolbox : MarshalByRefObject, IPlugin, IPlugin_SymbolList, IPlugin_InlineJsl {
private const string TOOLBOX_FUNC_TAG = "AppleIIgs-Toolbox-Functions"; // tag used in .sym65 file
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private bool VERBOSE = false;
private IApplication mAppRef;
private byte[] mFileData;
private Dictionary<int, PlSymbol> mFunctionList;
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public string Identifier {
get {
return "Apple IIgs toolbox call handler";
}
}
public void Prepare(IApplication appRef, byte[] fileData, AddressTranslate addrTrans) {
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mAppRef = appRef;
mFileData = fileData;
mAppRef.DebugLog("IIgsToolbox(id=" + AppDomain.CurrentDomain.Id + "): prepare()");
}
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public void Unprepare() {
mAppRef = null;
mFileData = null;
}
public void UpdateSymbolList(List<PlSymbol> plSyms) {
// Extract the list of function name constants from the platform symbol file.
mFunctionList = PlSymbol.GeneratePlatformValueList(plSyms, TOOLBOX_FUNC_TAG, mAppRef);
}
public bool IsLabelSignificant(string beforeLabel, string afterLabel) {
return false;
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}
public void CheckJsl(int offset, int operand, out bool noContinue) {
const int TOOLBOX = 0xe10000;
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noContinue = false;
if (offset < 3) {
return;
}
// This only works if the LDX with the function comes right before the JSL.
// Fortunately, the assembler macros all work that way.
if (operand == TOOLBOX && mFileData[offset - 3] == 0xa2 /*LDX imm*/) {
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// match!
int func = Util.GetWord(mFileData, offset - 2, 2, false);
if (VERBOSE) {
mAppRef.DebugLog("Toolbox call detected at +" + offset.ToString("x6") +
", func=$" + func.ToString("x4"));
}
PlSymbol sym;
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if (mFunctionList.TryGetValue(func, out sym)) {
mAppRef.SetOperandFormat(offset - 3, DataSubType.Symbol, sym.Label);
}
}
}
}
}