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Add Data Bank Register management, part 1

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On the 65816, 16-bit data access instructions (e.g. LDA abs) are
expanded to 24 bits by merging in the Data Bank Register (B).  The
value of the register is difficult to determine via static analysis,
so we need a way to annotate the disassembly with the correct value.
Without this, the mapping of address to file offset will sometimes
be incorrect.

This change adds the basic data structures and "fixup" function, a
functional but incomplete editor, and source for a new test case.
This commit is contained in:
Andy McFadden
2020-07-08 17:56:27 -07:00
parent 44522dc2f2
commit 18e6951f17
15 changed files with 590 additions and 22 deletions
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48
SourceGen/MainController.cs
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@ -1858,6 +1858,41 @@ namespace SourceGen {
EditLongComment(LineListGen.Line.HEADER_COMMENT_OFFSET);
}
public bool CanEditDataBank() {
if (mProject.CpuDef.HasAddr16) {
return false; // only available for 65816
}
if (SelectionAnalysis.mNumItemsSelected != 1) {
return false;
}
return (SelectionAnalysis.mLineType == LineListGen.Line.Type.Code /*||
is data bank */);
}
public void EditDataBank() {
int selIndex = mMainWin.CodeListView_GetFirstSelectedIndex();
int offset = CodeLineList[selIndex].FileOffset;
CodeAnalysis.DbrValue curValue;
if (!mProject.DbrValues.TryGetValue(offset, out curValue)) {
curValue = CodeAnalysis.DbrValue.Unknown;
}
EditDataBank dlg = new EditDataBank(mMainWin, mProject.AddrMap, mFormatter, curValue);
if (dlg.ShowDialog() != true) {
return;
}
if (dlg.Result != curValue) {
Debug.WriteLine("Changing DBR at +" + offset.ToString("x6") + " to $" +
((int)(dlg.Result)).ToString("x2"));
UndoableChange uc =
UndoableChange.CreateDataBankChange(offset, curValue, dlg.Result);
ChangeSet cs = new ChangeSet(uc);
ApplyUndoableChanges(cs);
}
}
public bool CanEditLabel() {
if (SelectionAnalysis.mNumItemsSelected != 1) {
return false;
@ -4095,7 +4130,7 @@ namespace SourceGen {
}
public void ShowFileHexDump() {
if (!OpenAnyFile(out string pathName)) {
if (!OpenAnyFile(null, out string pathName)) {
return;
}
FileInfo fi = new FileInfo(pathName);
@ -4134,7 +4169,7 @@ namespace SourceGen {
}
public void SliceFiles() {
if (!OpenAnyFile(out string pathName)) {
if (!OpenAnyFile(null, out string pathName)) {
return;
}
@ -4144,7 +4179,7 @@ namespace SourceGen {
}
public void ConvertOmf() {
if (!OpenAnyFile(out string pathName)) {
if (!OpenAnyFile(Res.Strings.OMF_SELECT_FILE, out string pathName)) {
return;
}
@ -4183,11 +4218,14 @@ namespace SourceGen {
ov.ShowDialog();
}
private bool OpenAnyFile(out string pathName) {
private bool OpenAnyFile(string title, out string pathName) {
OpenFileDialog fileDlg = new OpenFileDialog() {
Filter = Res.Strings.FILE_FILTER_ALL,
FilterIndex = 1
};
if (title != null) {
fileDlg.Title = title;
}
if (fileDlg.ShowDialog() != true) {
pathName = null;
return false;
@ -4285,7 +4323,7 @@ namespace SourceGen {
}
public void Debug_ApplesoftToHtml() {
if (!OpenAnyFile(out string basPathName)) {
if (!OpenAnyFile(null, out string basPathName)) {
return;
}