mirror of
https://github.com/fadden/6502bench.git
synced 2024-05-31 22:41:37 +00:00
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.
|
|
// See the LICENSE.txt file for distribution terms (Apache 2.0).
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
|
|
using PluginCommon;
|
|
|
|
namespace RuntimeData.Test2022 {
|
|
public class Test2022B : MarshalByRefObject, IPlugin, IPlugin_InlineBrk {
|
|
private IApplication mAppRef;
|
|
private byte[] mFileData;
|
|
private AddressTranslate mAddrTrans;
|
|
|
|
public string Identifier {
|
|
get {
|
|
return "Test 2022-extension-scripts B";
|
|
}
|
|
}
|
|
|
|
public void Prepare(IApplication appRef, byte[] fileData, AddressTranslate addrTrans,
|
|
List<PlSymbol> plSyms) {
|
|
mAppRef = appRef;
|
|
mFileData = fileData;
|
|
mAddrTrans = addrTrans;
|
|
|
|
mAppRef.DebugLog("Test2022-B(id=" + AppDomain.CurrentDomain.Id + "): prepare()");
|
|
}
|
|
|
|
public void CheckBrk(int offset, bool twoByteBrk, out bool noContinue) {
|
|
noContinue = true;
|
|
|
|
// need BRK, function byte, and two-byte address
|
|
if (!Util.IsInBounds(mFileData, offset, 4)) {
|
|
return;
|
|
}
|
|
byte func = mFileData[offset + 1];
|
|
if (func < 0x01 || func > 0x02) {
|
|
return;
|
|
}
|
|
|
|
Util.FormatBrkByte(mAppRef, twoByteBrk, offset, DataSubType.Hex, null);
|
|
mAppRef.SetInlineDataFormat(offset + 2, 2, DataType.NumericLE,
|
|
DataSubType.Address, null);
|
|
noContinue = false;
|
|
|
|
int structAddr = Util.GetWord(mFileData, offset + 2, 2, false);
|
|
int structOff = mAddrTrans.AddressToOffset(offset, structAddr);
|
|
if (structOff < 0) {
|
|
mAppRef.DebugLog("Unable to get offset for address $" + structAddr.ToString("x6"));
|
|
return;
|
|
}
|
|
|
|
switch (func) {
|
|
case 0x01:
|
|
if (!Util.IsInBounds(mFileData, structOff, 27)) {
|
|
mAppRef.DebugLog("Struct doesn't fit in file");
|
|
return;
|
|
}
|
|
mAppRef.SetInlineDataFormat(structOff + 0, 2, DataType.NumericLE,
|
|
DataSubType.Decimal, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 2, 2, DataType.NumericBE,
|
|
DataSubType.Hex, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 4, 4, DataType.NumericLE,
|
|
DataSubType.Hex, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 8, 4, DataType.NumericBE,
|
|
DataSubType.Hex, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 12, 1, DataType.NumericLE,
|
|
DataSubType.Ascii, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 13, 1, DataType.NumericLE,
|
|
DataSubType.HighAscii, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 14, 8, DataType.StringDci,
|
|
DataSubType.Ascii, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 22, 3, DataType.NumericLE,
|
|
DataSubType.Address, null);
|
|
mAppRef.SetInlineDataFormat(structOff + 25, 2, DataType.NumericLE,
|
|
DataSubType.Symbol, "data02");
|
|
break;
|
|
case 0x02:
|
|
if (!Util.IsInBounds(mFileData, structOff, 2)) {
|
|
mAppRef.DebugLog("Struct doesn't fit in file");
|
|
return;
|
|
}
|
|
mAppRef.SetInlineDataFormat(structOff, 2, DataType.NumericLE,
|
|
DataSubType.Address, null);
|
|
int nextAddr = Util.GetWord(mFileData, structOff + 2, 2, false);
|
|
int nextOff = mAddrTrans.AddressToOffset(structOff, nextAddr);
|
|
if (!Util.IsInBounds(mFileData, nextOff, 1)) {
|
|
mAppRef.DebugLog("Struct doesn't fit in file");
|
|
return;
|
|
}
|
|
mAppRef.SetInlineDataFormat(nextOff, 8, DataType.StringGeneric,
|
|
DataSubType.HighAscii, null);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|