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716dce5f28
Sort of silly to have every handler immediately pull the operand out of the file data. (This is arguably less efficient, since we now have to serialize the argument across the AppDomain boundary, but we should be okay spending a few extra nanoseconds here.)
84 lines
2.8 KiB
C#
84 lines
2.8 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 PluginCommon;
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/*
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# pea ...
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# pea ...
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# ldx #function
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# jsl $e10000
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*/
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namespace RuntimeData.Apple {
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public class IIgsToolbox : MarshalByRefObject, IPlugin, IPlugin_SymbolList, IPlugin_InlineJsl {
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private const string TOOLBOX_FUNC_TAG = "AppleIIgs-Toolbox-Functions"; // tag used in .sym65 file
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private bool VERBOSE = false;
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private IApplication mAppRef;
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private byte[] mFileData;
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private Dictionary<int, PlSymbol> mFunctionList;
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public string Identifier {
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get {
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return "Apple IIgs toolbox call handler";
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}
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}
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public void Prepare(IApplication appRef, byte[] fileData, AddressTranslate addrTrans) {
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mAppRef = appRef;
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mFileData = fileData;
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mAppRef.DebugLog("IIgsToolbox(id=" + AppDomain.CurrentDomain.Id + "): prepare()");
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}
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public void UpdateSymbolList(List<PlSymbol> plSyms) {
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// Extract the list of function name constants from the platform symbol file.
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mFunctionList = PlSymbol.GeneratePlatformValueList(plSyms, TOOLBOX_FUNC_TAG, mAppRef);
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}
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public bool IsLabelSignificant(string beforeLabel, string afterLabel) {
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return false;
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}
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public void CheckJsl(int offset, int operand, out bool noContinue) {
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const int TOOLBOX = 0xe10000;
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noContinue = false;
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if (offset < 3) {
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return;
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}
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// This only works if the LDX with the function comes right before the JSL.
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// Fortunately, the assembler macros all work that way.
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if (operand == TOOLBOX && mFileData[offset - 3] == 0xa2 /*LDX imm*/) {
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// match!
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int func = Util.GetWord(mFileData, offset - 2, 2, false);
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if (VERBOSE) {
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mAppRef.DebugLog("Toolbox call detected at +" + offset.ToString("x6") +
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", func=$" + func.ToString("x4"));
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}
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PlSymbol sym;
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if (mFunctionList.TryGetValue(func, out sym)) {
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mAppRef.SetOperandFormat(offset - 3, DataSubType.Symbol, sym.Label);
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}
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}
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}
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}
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}
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