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dfd5bcab1b
Early data sheets listed BRK as one byte, but RTI after a BRK skips the following byte, effectively making BRK a 2-byte instruction. Sometimes, such as when diassembling Apple /// SOS code, it's handy to treat it that way explicitly. This change makes two-byte BRKs optional, controlled by a checkbox in the project settings. In the system definitions it defaults to true for Apple ///, false for all others. ACME doesn't allow BRK to have an arg, and cc65 only allows it for 65816 code (?), so it's emitted as a hex blob for those assemblers. Anyone wishing to target those assemblers should stick to 1-byte mode. Extension scripts have to switch between formatting one byte of inline data and formatting an instruction with a one-byte operand. A helper function has been added to the plugin Util class. To get some regression test coverage, 2022-extension-scripts has been configured to use two-byte BRK. Also, added/corrected some SOS constants. See also issue #44.
99 lines
4.2 KiB
C#
99 lines
4.2 KiB
C#
// Copyright 2019 faddenSoft. All Rights Reserved.
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// See the LICENSE.txt file for distribution terms (Apache 2.0).
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using System;
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using System.Collections.Generic;
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using PluginCommon;
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namespace RuntimeData.Test2022 {
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public class Test2022B : MarshalByRefObject, IPlugin, IPlugin_InlineBrk {
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private IApplication mAppRef;
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private byte[] mFileData;
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private AddressTranslate mAddrTrans;
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public string Identifier {
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get {
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return "Test 2022-extension-scripts B";
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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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List<PlSymbol> plSyms) {
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mAppRef = appRef;
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mFileData = fileData;
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mAddrTrans = addrTrans;
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mAppRef.DebugLog("Test2022-B(id=" + AppDomain.CurrentDomain.Id + "): prepare()");
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}
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public void CheckBrk(int offset, bool twoByteBrk, out bool noContinue) {
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noContinue = true;
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// need BRK, function byte, and two-byte address
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if (!Util.IsInBounds(mFileData, offset, 4)) {
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return;
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}
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byte func = mFileData[offset + 1];
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if (func < 0x01 || func > 0x02) {
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return;
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}
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Util.FormatBrkByte(mAppRef, twoByteBrk, offset, DataSubType.Hex, null);
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mAppRef.SetInlineDataFormat(offset + 2, 2, DataType.NumericLE,
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DataSubType.Address, null);
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noContinue = false;
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int structAddr = Util.GetWord(mFileData, offset + 2, 2, false);
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int structOff = mAddrTrans.AddressToOffset(offset, structAddr);
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if (structOff < 0) {
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mAppRef.DebugLog("Unable to get offset for address $" + structAddr.ToString("x6"));
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return;
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}
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switch (func) {
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case 0x01:
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if (!Util.IsInBounds(mFileData, structOff, 27)) {
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mAppRef.DebugLog("Struct doesn't fit in file");
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return;
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}
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mAppRef.SetInlineDataFormat(structOff + 0, 2, DataType.NumericLE,
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DataSubType.Decimal, null);
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mAppRef.SetInlineDataFormat(structOff + 2, 2, DataType.NumericBE,
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DataSubType.Hex, null);
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mAppRef.SetInlineDataFormat(structOff + 4, 4, DataType.NumericLE,
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DataSubType.Hex, null);
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mAppRef.SetInlineDataFormat(structOff + 8, 4, DataType.NumericBE,
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DataSubType.Hex, null);
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mAppRef.SetInlineDataFormat(structOff + 12, 1, DataType.NumericLE,
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DataSubType.Ascii, null);
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mAppRef.SetInlineDataFormat(structOff + 13, 1, DataType.NumericLE,
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DataSubType.HighAscii, null);
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mAppRef.SetInlineDataFormat(structOff + 14, 8, DataType.StringDci,
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DataSubType.Ascii, null);
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mAppRef.SetInlineDataFormat(structOff + 22, 3, DataType.NumericLE,
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DataSubType.Address, null);
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mAppRef.SetInlineDataFormat(structOff + 25, 2, DataType.NumericLE,
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DataSubType.Symbol, "data02");
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break;
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case 0x02:
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if (!Util.IsInBounds(mFileData, structOff, 2)) {
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mAppRef.DebugLog("Struct doesn't fit in file");
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return;
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}
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mAppRef.SetInlineDataFormat(structOff, 2, DataType.NumericLE,
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DataSubType.Address, null);
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int nextAddr = Util.GetWord(mFileData, structOff + 2, 2, false);
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int nextOff = mAddrTrans.AddressToOffset(structOff, nextAddr);
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if (!Util.IsInBounds(mFileData, nextOff, 1)) {
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mAppRef.DebugLog("Struct doesn't fit in file");
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return;
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}
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mAppRef.SetInlineDataFormat(nextOff, 8, DataType.StringGeneric,
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DataSubType.HighAscii, null);
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break;
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}
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}
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}
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}
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