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93 lines
3.1 KiB
C#
93 lines
3.1 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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# inline_entry equ $e100a8
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# jsl inline_entry
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# dc i2'callnum'
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# dc i4'parmblock'
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# bcs error
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# stack_entry equ $e100b0
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# pea parmblock|-16
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# pea parmblock
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# pea callnum
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# jsl stack_entry
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# bcs error
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*/
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namespace RuntimeData.Apple {
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public class GSOS : MarshalByRefObject, IPlugin {
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private const string GSOS_FUNC_TAG = "AppleIIgs-GSOS-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, PlatSym> mFunctionList;
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public string Identifier {
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get {
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return "Apple IIgs GS/OS call handler";
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}
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}
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public void Prepare(IApplication appRef, byte[] fileData, List<PlatSym> platSyms) {
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mAppRef = appRef;
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mFileData = fileData;
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mAppRef.DebugLog("GSOS(id=" + AppDomain.CurrentDomain.Id + "): prepare()");
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//System.Diagnostics.Debugger.Break();
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mFunctionList = PlatSym.GenerateValueList(platSyms, GSOS_FUNC_TAG, appRef);
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}
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public void CheckJsr(int offset, out bool noContinue) {
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// Not used by GS/OS
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noContinue = false;
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}
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public void CheckJsl(int offset, out bool noContinue) {
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noContinue = false;
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if (offset + 7 < mFileData.Length && mFileData[offset + 1] == 0xa8 &&
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mFileData[offset + 2] == 0x00 && mFileData[offset + 3] == 0xe1) {
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// match!
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int req = Util.GetWord(mFileData, offset + 4, 2, false);
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if (VERBOSE) {
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int addr = Util.GetWord(mFileData, offset + 6, 4, false);
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mAppRef.DebugLog("GSOS call detected at +" + offset.ToString("x6") +
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", cmd=$" + req.ToString("x4") + " addr=$" + addr.ToString("x6"));
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}
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PlatSym sym;
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if (mFunctionList.TryGetValue(req, out sym)) {
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mAppRef.SetInlineDataFormat(offset + 4, 2, DataType.NumericLE,
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DataSubType.Symbol, sym.Label);
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} else {
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mAppRef.SetInlineDataFormat(offset + 4, 2, DataType.NumericLE,
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DataSubType.None, null);
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}
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mAppRef.SetInlineDataFormat(offset + 6, 4, DataType.NumericLE,
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DataSubType.Address, null);
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}
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}
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}
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}
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