public Executable(string fileName)
{
MZFile file = new MZFile(fileName);
this.image = new ExecutableImage(file);
this.entryPoint =
new Address(image.MapFrameToSegment(file.EntryPoint.Segment), file.EntryPoint.Offset);
}
public Executable(string fileName)
{
MZFile file = new MZFile(fileName);
this.image = new ExecutableImage(file);
this.entryPoint =
new Address(image.MapFrameToSegment(file.EntryPoint.Segment), file.EntryPoint.Offset);
}
public ExecutableImage(MZFile file)
{
if (file == null)
throw new ArgumentNullException("file");
this.bytes = file.Image;
// Store relocatable locations for future use.
List<int> relocs = new List<int>();
foreach (FarPointer location in file.RelocatableLocations)
{
int index = location.Segment * 16 + location.Offset;
if (index >= 0 && index < bytes.Length - 1)
relocs.Add(index);
}
relocs.Sort();
this.relocatableLocations = relocs.ToArray();
// Guess segmentation info from the segment values to be
// relocated. For example, if a relocatable location contains the
// word 0x1790, it means that 0x1790 will be a segment that will
// be accessed some time during the program's execution.
//
// Although the SEG:OFF addresses of the relocatable locations
// themselves also provide clue about the program's segmentation,
// it is less important because they are not directly referenced
// in the program. Therefore we ignore them for the moment.
foreach (int index in relocatableLocations)
{
UInt16 frame = BitConverter.ToUInt16(bytes, index);
mapFrameToSegment[frame] = -1;
}
mapFrameToSegment[file.EntryPoint.Segment] = -1;
// Create a dummy segment for each of the guessed segments.
// Initially, we set segment.OffsetCoverage to an empty range to
// indicate that we have no knowledge about the start and end
// offset of each segment.
for (int i = 0; i < mapFrameToSegment.Count; i++)
{
UInt16 frameNumber = mapFrameToSegment.Keys[i];
ExecutableSegment segment = new ExecutableSegment(this, i, frameNumber);
// Compute offset bounds for this segment.
// The lower bound is off course zero.
// The upper bound is 15 bytes into the next segment.
int startIndex = frameNumber * 16;
if (startIndex < bytes.Length)
{
int offsetLowerBound = 0;
int offsetUpperBound = Math.Min(bytes.Length - startIndex, 0x10000);
if (i < mapFrameToSegment.Count - 1)
{
offsetUpperBound = Math.Min(
offsetUpperBound,
mapFrameToSegment.Keys[i + 1] * 16 + 15 - startIndex);
}
segment.SetOffsetBounds(
new Range<int>(offsetLowerBound, offsetUpperBound));
}
mapFrameToSegment[frameNumber] = i;
base.Segments.Add(segment);
}
this.entryPoint = new Address(
MapFrameToSegment(file.EntryPoint.Segment), file.EntryPoint.Offset);
}
private void DoLoadFile(string fileName)
{
mzFile = new MZFile(fileName);
mzFile.Relocate(baseSegment);
dasm = new Disassembler.Disassembler16(mzFile.Image, mzFile.BaseAddress);
document = new Document();
document.Disassembler = dasm;
document.Navigator.LocationChanged += navigator_LocationChanged;
navHistory.Clear();
DoAnalyze();
procWindow.Document = document;
errorWindow.Document = document;
segmentWindow.Document = document;
listingWindow.Document = document;
hexWindow.Document = document;
propertiesWindow.SelectedObject = mzFile;
this.Text = "DOS Disassembler - " + System.IO.Path.GetFileName(fileName);
GoToLocation(dasm.Image.BaseAddress);
}
public ExecutableImage(MZFile file)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
this.bytes = file.Image;
// Store relocatable locations for future use.
List <int> relocs = new List <int>();
foreach (FarPointer location in file.RelocatableLocations)
{
int index = location.Segment * 16 + location.Offset;
if (index >= 0 && index < bytes.Length - 1)
{
relocs.Add(index);
}
}
relocs.Sort();
this.relocatableLocations = relocs.ToArray();
// Guess segmentation info from the segment values to be
// relocated. For example, if a relocatable location contains the
// word 0x1790, it means that 0x1790 will be a segment that will
// be accessed some time during the program's execution.
//
// Although the SEG:OFF addresses of the relocatable locations
// themselves also provide clue about the program's segmentation,
// it is less important because they are not directly referenced
// in the program. Therefore we ignore them for the moment.
foreach (int index in relocatableLocations)
{
UInt16 frame = BitConverter.ToUInt16(bytes, index);
mapFrameToSegment[frame] = -1;
}
mapFrameToSegment[file.EntryPoint.Segment] = -1;
// Create a dummy segment for each of the guessed segments.
// Initially, we set segment.OffsetCoverage to an empty range to
// indicate that we have no knowledge about the start and end
// offset of each segment.
for (int i = 0; i < mapFrameToSegment.Count; i++)
{
UInt16 frameNumber = mapFrameToSegment.Keys[i];
ExecutableSegment segment = new ExecutableSegment(this, i, frameNumber);
// Compute offset bounds for this segment.
// The lower bound is off course zero.
// The upper bound is 15 bytes into the next segment.
int startIndex = frameNumber * 16;
if (startIndex < bytes.Length)
{
int offsetLowerBound = 0;
int offsetUpperBound = Math.Min(bytes.Length - startIndex, 0x10000);
if (i < mapFrameToSegment.Count - 1)
{
offsetUpperBound = Math.Min(
offsetUpperBound,
mapFrameToSegment.Keys[i + 1] * 16 + 15 - startIndex);
}
segment.SetOffsetBounds(
new Range <int>(offsetLowerBound, offsetUpperBound));
}
mapFrameToSegment[frameNumber] = i;
base.Segments.Add(segment);
}
this.entryPoint = new Address(
MapFrameToSegment(file.EntryPoint.Segment), file.EntryPoint.Offset);
}