/// <summary>
/// Generates assembly source.
///
/// This code is common to all generators.
/// </summary>
/// <param name="gen">Reference to generator object (presumably the caller).</param>
/// <param name="sw">Text output sink.</param>
/// <param name="worker">Background worker object, for progress updates and
/// cancelation requests.</param>
public static void Generate(IGenerator gen, StreamWriter sw, BackgroundWorker worker)
{
DisasmProject proj = gen.Project;
Formatter formatter = gen.SourceFormatter;
int offset = 0;
bool doAddCycles = gen.Settings.GetBool(AppSettings.SRCGEN_SHOW_CYCLE_COUNTS, false);
LocalVariableLookup lvLookup = new LocalVariableLookup(proj.LvTables, proj,
gen.Localizer.LabelMap, gen.Quirks.LeadingUnderscoreSpecial,
gen.Quirks.NoRedefinableSymbols);
GenerateHeader(gen, sw);
// Used for M/X flag tracking.
StatusFlags prevFlags = StatusFlags.AllIndeterminate;
int lastProgress = 0;
while (offset < proj.FileData.Length)
{
Anattrib attr = proj.GetAnattrib(offset);
if (attr.IsInstructionStart && offset > 0 &&
proj.GetAnattrib(offset - 1).IsData)
{
// Transition from data to code. (Don't add blank line for inline data.)
gen.OutputLine(string.Empty);
}
// Long comments come first.
if (proj.LongComments.TryGetValue(offset, out MultiLineComment longComment))
{
List <string> formatted = longComment.FormatText(formatter, string.Empty);
foreach (string str in formatted)
{
gen.OutputLine(str);
}
}
// Check for address change.
int orgAddr = proj.AddrMap.Get(offset);
if (orgAddr >= 0)
{
gen.OutputOrgDirective(offset, orgAddr);
}
List <DefSymbol> lvars = lvLookup.GetVariablesDefinedAtOffset(offset);
if (lvars != null)
{
// table defined here
gen.OutputLocalVariableTable(offset, lvars,
lvLookup.GetMergedTableAtOffset(offset));
}
if (attr.IsInstructionStart)
{
// Generate M/X reg width directive, if necessary.
// NOTE: we can suppress the initial directive if we know what the
// target assembler's default assumption is. Probably want to handle
// that in the ORG output handler.
if (proj.CpuDef.HasEmuFlag)
{
StatusFlags curFlags = attr.StatusFlags;
curFlags.M = attr.StatusFlags.ShortM ? 1 : 0;
curFlags.X = attr.StatusFlags.ShortX ? 1 : 0;
if (curFlags.M != prevFlags.M || curFlags.X != prevFlags.X)
{
// changed, output directive
gen.OutputRegWidthDirective(offset, prevFlags.M, prevFlags.X,
curFlags.M, curFlags.X);
}
prevFlags = curFlags;
}
// Look for embedded instructions.
int len;
for (len = 1; len < attr.Length; len++)
{
if (proj.GetAnattrib(offset + len).IsInstructionStart)
{
break;
}
}
// Output instruction.
GenerateInstruction(gen, sw, lvLookup, offset, len, doAddCycles);
if (attr.DoesNotContinue)
{
gen.OutputLine(string.Empty);
}
offset += len;
}
else
{
gen.OutputDataOp(offset);
offset += attr.Length;
}
// Update progress meter. We don't want to spam it, so just ping it 10x.
int curProgress = (offset * 10) / proj.FileData.Length;
if (lastProgress != curProgress)
{
if (worker.CancellationPending)
{
Debug.WriteLine("GenCommon got cancellation request");
return;
}
lastProgress = curProgress;
worker.ReportProgress(curProgress * 10);
//System.Threading.Thread.Sleep(500);
}
}
}
/// <summary>
/// Generates assembly source.
///
/// This code is common to all generators.
/// </summary>
/// <param name="gen">Reference to generator object (presumably the caller).</param>
/// <param name="sw">Text output sink.</param>
/// <param name="worker">Background worker object, for progress updates and
/// cancelation requests.</param>
public static void Generate(IGenerator gen, StreamWriter sw, BackgroundWorker worker)
{
DisasmProject proj = gen.Project;
Formatter formatter = gen.SourceFormatter;
int offset = gen.StartOffset;
bool doAddCycles = gen.Settings.GetBool(AppSettings.SRCGEN_SHOW_CYCLE_COUNTS, false);
LocalVariableLookup lvLookup = new LocalVariableLookup(proj.LvTables, proj,
gen.Localizer.LabelMap, gen.Quirks.LeadingUnderscoreSpecial,
gen.Quirks.NoRedefinableSymbols);
GenerateHeader(gen, sw);
// Used for M/X flag tracking.
StatusFlags prevFlags = StatusFlags.AllIndeterminate;
int lastProgress = 0;
// Create an address map iterator and advance it to match gen.StartOffset.
IEnumerator <AddressMap.AddressChange> addrIter = proj.AddrMap.AddressChangeIterator;
while (addrIter.MoveNext())
{
if (addrIter.Current.IsStart && addrIter.Current.Offset >= offset)
{
break;
}
}
bool arDirectPending = false;
while (offset < proj.FileData.Length)
{
Anattrib attr = proj.GetAnattrib(offset);
if (attr.IsInstructionStart && offset > 0 &&
proj.GetAnattrib(offset - 1).IsData)
{
// Transition from data to code. (Don't add blank line for inline data.)
gen.OutputLine(string.Empty);
}
// Long comments come first.
if (proj.LongComments.TryGetValue(offset, out MultiLineComment longComment))
{
List <string> formatted = longComment.FormatText(formatter, string.Empty);
foreach (string str in formatted)
{
gen.OutputLine(str);
}
}
// Check for address range starts. There may be more than one at a given offset.
AddressMap.AddressChange change = addrIter.Current;
while (change != null && change.Offset == offset)
{
if (change.IsStart)
{
gen.OutputArDirective(change);
arDirectPending = true;
addrIter.MoveNext();
change = addrIter.Current;
}
else
{
break;
}
}
// Reached end of start directives. Write the last one.
if (arDirectPending)
{
gen.FlushArDirectives();
arDirectPending = false;
}
List <DefSymbol> lvars = lvLookup.GetVariablesDefinedAtOffset(offset);
if (lvars != null)
{
// table defined here
gen.OutputLocalVariableTable(offset, lvars,
lvLookup.GetMergedTableAtOffset(offset));
}
if (attr.IsInstructionStart)
{
// Generate M/X reg width directive, if necessary.
// NOTE: we can suppress the initial directive if we know what the
// target assembler's default assumption is. Probably want to handle
// that in the ORG output handler.
if (proj.CpuDef.HasEmuFlag)
{
StatusFlags curFlags = attr.StatusFlags;
curFlags.M = attr.StatusFlags.IsShortM ? 1 : 0;
curFlags.X = attr.StatusFlags.IsShortX ? 1 : 0;
if (curFlags.M != prevFlags.M || curFlags.X != prevFlags.X)
{
// changed, output directive
gen.OutputRegWidthDirective(offset, prevFlags.M, prevFlags.X,
curFlags.M, curFlags.X);
}
prevFlags = curFlags;
}
// Look for embedded instructions.
int len;
for (len = 1; len < attr.Length; len++)
{
if (proj.GetAnattrib(offset + len).IsInstructionStart)
{
break;
}
}
// Output instruction.
GenerateInstruction(gen, sw, lvLookup, offset, len, doAddCycles);
if (attr.DoesNotContinue)
{
gen.OutputLine(string.Empty);
}
offset += len;
}
else
{
gen.OutputDataOp(offset);
offset += attr.Length;
}
// Check for address region ends. There may be more than one at a given offset.
// The end-region offset will be the last byte of the instruction or data item,
// so it should be one less than the updated offset.
//
// If we encounter a region start, we'll handle that at the top of the next
// loop iteration.
while (change != null && change.Offset + 1 == offset)
{
if (!change.IsStart)
{
gen.OutputArDirective(change);
arDirectPending = true;
addrIter.MoveNext();
change = addrIter.Current;
}
else
{
break;
}
}
// Update progress meter. We don't want to spam it, so just ping it 10x.
int curProgress = (offset * 10) / proj.FileData.Length;
if (lastProgress != curProgress)
{
if (worker.CancellationPending)
{
Debug.WriteLine("GenCommon got cancellation request");
return;
}
lastProgress = curProgress;
worker.ReportProgress(curProgress * 10);
//System.Threading.Thread.Sleep(500);
}
}
Debug.Assert(offset == proj.FileDataLength);
}