public void uMipsDis_Generate()
{
var ab = new byte[1000];
var rnd = new Random(0x4711);
rnd.NextBytes(ab);
var mem = new MemoryArea(Address.Ptr32(0x00100000), ab);
var rdr = new BeImageReader(mem, 0);
var dasm = new MicroMipsDisassembler(arch, rdr);
foreach (var instr in dasm)
{
}
}
public void LoadElfIdentification()
{
var rdr = new BeImageReader(base.RawImage, 0);
var elfMagic = rdr.ReadBeInt32();
if (elfMagic != ELF_MAGIC)
{
throw new BadImageFormatException("File is not in ELF format.");
}
this.fileClass = rdr.ReadByte();
this.endianness = rdr.ReadByte();
this.fileVersion = rdr.ReadByte();
this.osAbi = rdr.ReadByte();
}
private void Given_Relocator()
{
var sc = new ServiceContainer();
var arch = new M68kArchitecture(sc, "m68k", new Dictionary <string, object>());
var platform = new MacOSClassic(sc, arch)
{
A5World = a5world,
A5Offset = 2048,
};
var mem = (ByteMemoryArea)platform.A5World.MemoryArea;
var rdr = new BeImageReader(mem, 0);
this.relocator = new A5Relocator(platform, rdr, 1024);
}
private void PopulateImports()
{
BeImageReader memRdr = new BeImageReader(xexData.memoryData);
for (int i = 0; i < xexData.import_records.Count; i++)
{
UInt32 tableAddress = xexData.import_records[i];
UInt32 memOffset = tableAddress - xexData.exe_address;
if (memOffset > xexData.memorySize)
{
throw new BadImageFormatException($"XEX: invalid import record offset: 0x{memOffset}");
}
UInt32 value = memRdr.ReadAt <UInt32>(memOffset, rdr => rdr.ReadUInt32());
byte type = (byte)((value & 0xFF000000) >> 24);
byte libIndex = (byte)((value & 0x00FF0000) >> 16);
if (type == 0)
{
if (libIndex >= xexData.libNames.Count)
{
throw new BadImageFormatException($"XEX: invalid import type 0 record lib index ({libIndex}, max:{xexData.libNames.Count})");
}
UInt32 importOrdinal = (value & 0xFFFF);
string importLibName = xexData.libNames[libIndex];
UInt32 importAddress = xexData.import_records[i];
var theAddress = new Address32(importAddress);
imports.Add(theAddress, new OrdinalImportReference(theAddress, importLibName, (int)importOrdinal, SymbolType.ExternalProcedure));
}
else if (type == 1)
{
if (libIndex >= xexData.libNames.Count)
{
throw new BadImageFormatException($"XEX: invalid import type 0 record lib index ({libIndex}, max:{xexData.libNames.Count})");
}
UInt32 importOrdinal = (value & 0xFFFF);
string importLibName = xexData.libNames[libIndex];
UInt32 importAddress = xexData.import_records[i];
var theAddress = new Address32(importAddress);
imports.Add(theAddress, new OrdinalImportReference(theAddress, importLibName, (int)importOrdinal, SymbolType.ExternalProcedure));
}
}
}
public override Program Load(Address?addrLoad)
{
var rdr = new BeImageReader(RawImage);
if (!TryLoadHeader(rdr, out var hdr))
{
throw new BadImageFormatException();
}
addrLoad ??= PreferredBaseAddress;
var cfgSvc = Services.RequireService <IConfigurationService>();
var arch = cfgSvc.GetArchitecture("m68k") !;
var env = cfgSvc.GetEnvironment("atariTOS");
var platform = env.Load(Services, arch);
var bytes = new byte[hdr.TextSize + hdr.DataSize + hdr.BssSize];
var mem = arch.CreateMemoryArea(addrLoad, bytes);
int cRead = rdr.ReadBytes(bytes, 0, hdr.TextSize + hdr.DataSize);
if (cRead != hdr.TextSize + hdr.DataSize)
{
throw new BadImageFormatException();
}
var text = new ImageSegment(".text", addrLoad, mem, AccessMode.ReadExecute)
{
Size = hdr.TextSize
};
var data = new ImageSegment(".data", addrLoad + hdr.TextSize, mem, AccessMode.ReadWrite)
{
Size = hdr.DataSize
};
var bss = new ImageSegment(".bss", addrLoad + hdr.TextSize + hdr.DataSize, mem, AccessMode.ReadWrite)
{
Size = hdr.BssSize
};
//$TODO: Implement symbols. For now just skip over them.
rdr.Offset += hdr.SymbolsSize;
PerformRelocations(mem, rdr);
var map = new SegmentMap(
addrLoad,
text, data, bss);
return(new Program(map, arch, platform));
}
private void PopulateImports()
{
BeImageReader memRdr = new BeImageReader(xexData.memoryData);
for (int i = 0; i < xexData.import_records.Count; i++)
{
UInt32 tableAddress = xexData.import_records[i];
UInt32 memOffset = tableAddress - xexData.exe_address;
if (memOffset > xexData.memorySize)
{
throw new BadImageFormatException($"XEX: invalid import record offset: 0x{memOffset}");
}
UInt32 value = memRdr.ReadAt <UInt32>(memOffset, rdr => rdr.ReadUInt32());
XexImportType type = (XexImportType)((value & 0xFF000000) >> 24);
byte libIndex = (byte)((value & 0x00FF0000) >> 16);
if (type > XexImportType.Function)
{
decompilerEventListener.Error(
$"XEX: Unsupported import type {type}, value: 0x{value:X}");
continue;
}
if (libIndex >= xexData.libNames.Count)
{
throw new BadImageFormatException($"XEX: invalid import record lib index ({libIndex}, max:{xexData.libNames.Count})");
}
UInt32 importOrdinal = (value & 0xFFFF);
string importLibName = xexData.libNames[libIndex];
Address32 importAddress = new Address32(xexData.import_records[i]);
SymbolType symbolType = SymbolType.Unknown;
switch (type)
{
case XexImportType.Data:
symbolType = SymbolType.Data;
break;
case XexImportType.Function:
symbolType = SymbolType.ExternalProcedure;
break;
}
imports.Add(importAddress, new OrdinalImportReference(importAddress, importLibName, (int)importOrdinal, symbolType));
}
}
private long PerformanceTest_Simulated(byte[] buf, Decoder root)
{
var rdr = new BeImageReader(buf);
var dasm = new Disassembler(rdr, root);
Stopwatch sw = new Stopwatch();
sw.Start();
foreach (var instr in dasm)
{
}
sw.Stop();
var time = sw.ElapsedMilliseconds;
return(time);
}
protected override MemoryArea RewriteCode(uint[] words)
{
byte[] bytes = words.SelectMany(w => new byte[]
{
(byte)(w >> 24),
(byte)(w >> 16),
(byte)(w >> 8),
(byte)w
}).ToArray();
var image = new MemoryArea(LoadAddress, bytes);
this.rdr = image.CreateBeReader(LoadAddress);
dasm = mkDasm(rdr);
return(image);
}
public override Program Load(Address addrLoad)
{
arch = new M68kArchitecture();
var imgReader = new BeImageReader(RawImage, 0);
var parse = new HunkFileParser(imgReader, false);
this.hunkFile = parse.Parse();
BuildSegments();
this.firstCodeHunk = parse.FindFirstCodeHunk();
var image = new LoadedImage(addrLoad, RelocateBytes(addrLoad));
return(new Program(
image,
image.CreateImageMap(),
arch,
new AmigaOSPlatform(Services, arch)));
}
public override Program Load(Address?addrLoad)
{
BeImageReader rdr = new BeImageReader(this.RawImage, 0);
FileHeader64? str = rdr.ReadStruct <FileHeader64>();
if (!str.HasValue)
{
throw new BadImageFormatException("Invalid XCoff64 header.");
}
var mem = new ByteMemoryArea(addrLoad ?? PreferredBaseAddress, RawImage);
var seg = new ImageSegment("foo", mem, AccessMode.ReadWriteExecute);
var map = new SegmentMap(seg);
var cfgSvc = Services.RequireService <IConfigurationService>();
var arch = cfgSvc.GetArchitecture("ppc-64-be") !;
var platform = new DefaultPlatform(Services, arch);
return(new Program(map, arch, platform));
}
public override Program Load(Address addrLoad)
{
var cfgSvc = Services.RequireService <IConfigurationService>();
arch = (M68kArchitecture)cfgSvc.GetArchitecture("m68k");
var imgReader = new BeImageReader(RawImage, 0);
var parse = new HunkFileParser(imgReader, false);
this.hunkFile = parse.Parse();
BuildSegments();
this.firstCodeHunk = parse.FindFirstCodeHunk();
var image = new LoadedImage(addrLoad, RelocateBytes(addrLoad));
return(new Program(
image,
image.CreateImageMap(),
arch,
cfgSvc.GetEnvironment("amigaOS").Load(Services, arch)));
}
private void ProcessJumpTable(uint jtOffset)
{
var j = new JumpTable();
ImageReader ir = new BeImageReader(image, jtOffset);
j.AboveA5Size = ir.ReadBeUInt32();
j.BelowA5Size = ir.ReadBeUInt32();
j.JumpTableSize = ir.ReadBeUInt32();
j.JumpTableOffset = ir.ReadBeUInt32();
uint size = j.JumpTableSize;
while (size > 0)
{
JumpTableEntry jte = new JumpTableEntry();
jte.RoutineOffsetFromSegmentStart = ir.ReadBeUInt16();
jte.Instruction = ir.ReadBeUInt32();
jte.LoadSegTrapNumber = ir.ReadBeUInt16();
Debug.WriteLine(string.Format("Jump table entry: {0:x2} {1:X4} {2:X2}", jte.RoutineOffsetFromSegmentStart, jte.Instruction, jte.LoadSegTrapNumber));
size -= 8;
}
}
public override Program Load(Address addrLoad)
{
var cfgSvc = Services.RequireService <IConfigurationService>();
arch = (M68kArchitecture)cfgSvc.GetArchitecture("m68k");
var imgReader = new BeImageReader(RawImage, 0);
var parse = new HunkFileParser(imgReader, false);
this.hunkFile = parse.Parse();
BuildSegments();
this.firstCodeHunk = parse.FindFirstCodeHunk();
var mem = new MemoryArea(addrLoad, RelocateBytes(addrLoad));
return(new Program(
new ImageMap(
mem.BaseAddress,
new ImageSegment(
"code", mem, AccessMode.ReadWriteExecute)),
arch,
cfgSvc.GetEnvironment("amigaOS").Load(Services, arch)));
}
private Program LoadExecSegments(BeImageReader rdr)
{
var segments = new List <ImageSegment>();
var execAuxRdr = new StructureReader <SOM_Exec_aux_hdr>(rdr);
var execAux = execAuxRdr.Read();
var cfgSvc = Services.RequireService <IConfigurationService>();
var arch = cfgSvc.GetArchitecture("paRisc");
var dlHeaderRdr = ReadDynamicLibraryInfo(execAux, arch);
var textBytes = new byte[execAux.exec_tsize];
var textAddr = Address.Ptr32(execAux.exec_tmem);
Array.Copy(RawImage, (int)execAux.exec_tfile, textBytes, 0, textBytes.Length);
var textSeg = new ImageSegment(
".text",
new MemoryArea(textAddr, textBytes),
AccessMode.ReadExecute);
segments.Add(textSeg);
var dataBytes = new byte[execAux.exec_dsize];
var dataAddr = Address.Ptr32(execAux.exec_tmem);
Array.Copy(RawImage, (int)execAux.exec_dfile, dataBytes, 0, dataBytes.Length);
var dataSeg = new ImageSegment(
".data",
new MemoryArea(dataAddr, dataBytes),
AccessMode.ReadWrite);
segments.Add(dataSeg);
var segmap = new SegmentMap(
segments.Min(s => s.Address),
segments.ToArray());
var platform = cfgSvc.GetEnvironment("hpux").Load(Services, arch);
return(new Program(segmap, arch, platform));
}
private ImageSegment LoadSegment(BeImageReader rdr)
{
var section = rdr.ReadStruct <Section>();
var name = Utf8StringFromFixedArray(section.s_name);
var addr = Address.Ptr32(section.v_paddr);
var bytes = new byte[section.s_size];
if (section.s_scnptr != 0)
{
Array.Copy(RawImage, section.s_scnptr, bytes, 0, bytes.Length);
}
var mem = new ByteMemoryArea(addr, bytes);
var access = SectionAccessMode(section.s_flags);
var seg = new ImageSegment(name, mem, access);
Debug.Print(" {0} {1,-10} {2}", seg.Address, section.s_flags, seg.Name);
SetWellKnownSection(section, SectionFlags.STYP_TEXT, seg, ref textSection);
SetWellKnownSection(section, SectionFlags.STYP_DATA, seg, ref dataSection);
SetWellKnownSection(section, SectionFlags.STYP_BSS, seg, ref bssSection);
SetWellKnownSection(section, SectionFlags.STYP_LOADER, seg, ref loaderSection);
return(seg);
}
public override Program LoadProgram(Address?addrLoad)
{
var rdr = new BeImageReader(RawImage);
var header = rdr.ReadStruct <filehdr>();
if (header.f_opthdr != 0)
{
var sectionOffset = rdr.Offset + header.f_opthdr;
opthdr = rdr.ReadStruct <aouthdr>();
rdr.Offset = sectionOffset;
}
var sections = new scnhdr[header.f_nscns];
for (int i = 0; i < sections.Length; ++i)
{
sections[i] = rdr.ReadStruct <scnhdr>();
}
var imgSegments = new ImageSegment[header.f_nscns];
for (int i = 0; i < sections.Length; ++i)
{
imgSegments[i] = LoadImageSegment(sections[i]);
}
var arch = LoadArchitecture(header.f_magic);
var platform = new DefaultPlatform(Services, arch);
var segmap = new SegmentMap(imgSegments);
var program = new Program(segmap, arch, platform);
if (this.opthdr.HasValue)
{
var addrEntry = Address.Ptr32(opthdr.Value.entry); //$64
var ep = ImageSymbol.Procedure(program.Architecture, addrEntry, "_start");
program.EntryPoints.Add(ep.Address, ep);
}
return(program);
}
public override Program LoadProgram(Address?addrLoad)
{
var rdr = new BeImageReader(this.RawImage, 0);
LoadElfIdentification(rdr);
this.innerLoader = CreateLoader();
this.innerLoader.LoadArchitectureFromHeader();
var platform = innerLoader.LoadPlatform(osAbi, innerLoader.Architecture);
int cHeaders = innerLoader.LoadSegments();
innerLoader.Sections.AddRange(innerLoader.LoadSectionHeaders());
innerLoader.LoadSymbolsFromSections();
//innerLoader.Dump(); // This spews a lot into the unit test output.
Program program;
if (cHeaders > 0)
{
program = innerLoader.LoadImage(platform, RawImage);
}
else
{
if (addrLoad != null)
{
addrLoad = innerLoader.CreateAddress(addrLoad.ToLinear());
}
innerLoader.Dump(addrLoad ?? innerLoader.CreateAddress(0), Console.Out);
// The file we're loading is an object file, and needs to be
// linked before we can load it.
var linker = innerLoader.CreateLinker();
program = linker.LinkObject(platform, addrLoad, RawImage);
}
innerLoader !.Relocate(program, addrLoad !);
return(program);
}
private int GetRunLengthValue(BeImageReader a5dr, ref int a5repeat)
{
// Run length returned is in byte(s).
// next byte read - see bit pattern from the following table for the return value
// 0xxxxxxx - 0 - $7F
// 10xxxxxx - 0 - $3FFF(run length and $3F + next byte, 14 bits)
// 110xxxxx - 0 - $1FFFFF(run length and $1F + next two bytes, 21 bits)
// 1110xxxx - next 4 bytes, 32 bits
// 1111xxxx - get both new runtime length copy in bytes and new runtime length repeat count
int runLength = a5dr.ReadByte();
if ((runLength & 0x80) == 0)
{
return(runLength);
}
if ((runLength & 0x40) == 0)
{
runLength = runLength & 0x3F;
runLength = (runLength << 8) + a5dr.ReadByte();
return(runLength);
}
if ((runLength & 0x20) == 0)
{
runLength = runLength & 0x1F;
runLength = (runLength << 16) + a5dr.ReadBeInt16();
return(runLength);
}
if ((runLength & 0x10) == 0)
{
return(a5dr.ReadBeInt32());
}
runLength = GetRunLengthValue(a5dr, ref a5repeat);
a5repeat = GetRunLengthValue(a5dr, ref a5repeat);
return(runLength);
}
public XexLoader(IServiceProvider services, ImageLocation imageUri, byte[] imgRaw) : base(services, imageUri, imgRaw)
{
decompilerEventListener = services.RequireService <DecompilerEventListener>();
rdr = new BeImageReader(RawImage, 0);
}
public void LoadElfIdentification()
{
var rdr = new BeImageReader(base.RawImage, 0);
LoadElfIdentification(rdr);
}
public A5Relocator(MacOSClassic platform, BeImageReader a5dr, UInt32 a5dbelow)
{
this.platform = platform;
this.a5dr = a5dr;
this.a5dbelow = a5dbelow;
}
public void Relocate()
{
var memA5 = (ByteMemoryArea)platform.A5World.MemoryArea;
var a5belowWriter = new BeImageWriter(memA5, 0);
var a5belowReader = new BeImageReader(memA5, 0);
uint a5globalOffset = platform.A5Offset - a5dbelow;
var a5WorldAddress = (UInt32)((platform.A5World.Address.Offset + platform.A5Offset) & 0xFFFFFFFF);
// set Repeat count = 1, reset after each completed copy cycle
// byte token lower 4 bits number of words to copy from compressed data
// byte token upper 4 bits number of words to skip in global application data space
// if either value is 0 then get run length value which is in bytes.
// if the new run length value for copy is 0 then it's the end of compression data.
for (;;)
{
int a5repeat = 1;
// Skip is number of 16-bit words to skip
uint a5globalSkip = a5dr.ReadByte();
if (a5globalSkip == 0)
{
a5globalSkip = a5dr.ReadByte();
if (a5globalSkip == 0)
{
break;
}
if (a5globalSkip > 0x7F)
{
a5globalSkip = ((a5globalSkip & 0x7F) << 8) + a5dr.ReadByte();
a5globalSkip = (a5globalSkip << 16) + a5dr.ReadBeUInt16();
}
else
{
a5repeat = ResourceFork.GetRunLengthValue(a5dr, ref a5repeat);
//$BUG: a5repeat could return the value 0. The do-while below will
// decrement a5repeat before testing. This will lead to an effective
// repeat count of 2^32; likely not wanted.
}
}
else
{
if ((a5globalSkip & 0x80) == 0x80)
{
a5globalSkip = ((a5globalSkip & 0x7F) << 8) + a5dr.ReadByte();
}
}
a5globalSkip = a5globalSkip * 2;
do
{
a5globalOffset += a5globalSkip;
a5belowReader.Seek(a5globalOffset, SeekOrigin.Begin);
uint a5ptrOffset = a5belowReader.ReadBeUInt32();
a5belowWriter.Position = (int)a5globalOffset;
// write relocated A5World pointers to absolute address in A5World segment
// Possible register/mark as Global pointer references to strings
a5belowWriter.WriteBeUInt32((a5WorldAddress + a5ptrOffset) & 0xFFFFFFFF);
--a5repeat;
} while (a5repeat > 0);
}
}
private void LoadPEImage()
{
long fileDataSize = rdr.Bytes.Length - xexData.header.header_size;
BeImageReader memRdr = new BeImageReader(xexData.memoryData);
DOSHeader dosHeader = memRdr.ReadStruct <DOSHeader>();
dosHeader.Validate();
memRdr.Offset = dosHeader.e_lfanew;
UInt32 peSignature = memRdr.ReadUInt32();
if (peSignature != 0x50450000)
{
throw new BadImageFormatException("PE: Invalid or Missing PE Signature");
}
COFFHeader coffHeader = memRdr.ReadStruct <COFFHeader>();
if (coffHeader.Machine != 0x1F2)
{
throw new BadImageFormatException($"PE: Machine type does not match Xbox360 (found 0x{coffHeader.Machine:X})");
}
if ((coffHeader.Characteristics & 0x0100) == 0)
{
throw new BadImageFormatException("PE: Only 32-bit images are supported");
}
if (coffHeader.SizeOfOptionalHeader != 224)
{
throw new BadImageFormatException($"PE: Invalid size of optional header (got {coffHeader.SizeOfOptionalHeader}");
}
PEOptHeader optHeader = memRdr.ReadStruct <PEOptHeader>();
if (optHeader.signature != 0x10b)
{
throw new BadImageFormatException($"PE: Invalid signature of optional header (got 0x{optHeader.signature})");
}
if (optHeader.Subsystem != IMAGE_SUBSYSTEM_XBOX)
{
throw new BadImageFormatException($"PE: Invalid subsystem (got {optHeader.Subsystem})");
}
xexData.peHeader = optHeader;
uint extendedMemorySize = 0;
uint numSections = coffHeader.NumberOfSections;
List <PESection> peSections = new List <PESection>();
for (uint i = 0; i < numSections; i++)
{
COFFSection section = memRdr.ReadStruct <COFFSection>();
string sectionName = Encoding.ASCII.GetString(section.Name).Trim('\0');
uint lastMemoryAddress = section.VirtualAddress + section.VirtualSize;
if (lastMemoryAddress > extendedMemorySize)
{
extendedMemorySize = lastMemoryAddress;
}
if (section.SizeOfRawData == 0)
{
decompilerEventListener.Info(new NullCodeLocation(""),
$"Skipping empty section {sectionName}"
);
continue;
}
byte[] sectionData = memRdr.ReadAt <byte[]>(section.PointerToRawData, rdr => rdr.ReadBytes(section.SizeOfRawData));
AccessMode acc = AccessMode.Read;
if (section.Flags.HasFlag(PESectionFlags.IMAGE_SCN_MEM_WRITE))
{
acc |= AccessMode.Write;
}
if (section.Flags.HasFlag(PESectionFlags.IMAGE_SCN_MEM_EXECUTE))
{
acc |= AccessMode.Execute;
}
PESection managedSection = new PESection(section);
peSections.Add(managedSection);
ImageSegment seg = new ImageSegment(sectionName, new MemoryArea(
new Address32(managedSection.PhysicalOffset + xexData.exe_address), sectionData
), acc);
segments.Add(seg);
}
if (extendedMemorySize > xexData.memorySize)
{
decompilerEventListener.Info(new NullCodeLocation(""),
$"PE: Image sections extend beyond virtual memory range loaded from file ({extendedMemorySize} > {xexData.memorySize}). Extending by {extendedMemorySize - xexData.memorySize} bytes."
);
UInt32 oldMemorySize = xexData.memorySize;
byte[] newMemoryData = new byte[extendedMemorySize];
Array.Copy(xexData.memoryData, newMemoryData, xexData.memorySize);
xexData.memorySize = extendedMemorySize;
xexData.memoryData = newMemoryData;
for (int i = 0; i < peSections.Count; i++)
{
PESection section = peSections[i];
if (section.PhysicalSize == 0)
{
continue;
}
if (section.PhysicalSize + section.PhysicalOffset > fileDataSize)
{
decompilerEventListener.Warn(new NullCodeLocation(""),
$"PE: Section '{section.Name}' lies outside any phyisical data we have {section.PhysicalOffset} (size {section.PhysicalSize})"
);
continue;
}
if (section.VirtualOffset >= oldMemorySize)
{
uint sizeToCopy = section.PhysicalSize;
if (section.VirtualSize < sizeToCopy)
{
sizeToCopy = section.VirtualSize;
}
Array.Copy(
xexData.memoryData, section.PhysicalOffset,
newMemoryData, section.VirtualOffset,
sizeToCopy);
}
}
}
}
public XexLoader(IServiceProvider services, string filename, byte[] imgRaw) : base(services, filename, imgRaw)
{
decompilerEventListener = services.RequireService <DecompilerEventListener>();
rdr = new BeImageReader(RawImage, 0);
}
private void A5Expand(BeImageReader a5dr, UInt32 a5dbelow)
{
var a5belowWriter = new BeImageWriter(platform.A5World.MemoryArea, platform.A5Offset - a5dbelow);
int a5RunLengthToken = 0;
int a5RunLengthCopySize = 0;
int a5globalSkip = 0;
int a5repeat = 0;
var a5copylength = 0;
bool a5dataEnd = false;
// Compressed data
// set Repeat count = 1, reset after each completed copy cycle
// byte token lower 4 bits number of words to copy from compressed data
// byte token upper 4 bits number of words to skip in global application data space
// if either value is 0 then get run length value which is in bytes.
// if the new run length value for copy is 0 then it's the end of compression data.
do
{
a5repeat = 1;
// Token value - upper nibble is words to skip, lower nibble is words to copy
a5RunLengthToken = a5dr.ReadByte();
a5globalSkip = a5RunLengthToken;
a5RunLengthCopySize = a5RunLengthToken & 0x0F;
if (a5RunLengthCopySize == 0)
{
a5RunLengthCopySize = GetRunLengthValue(a5dr, ref a5repeat);
if (a5RunLengthCopySize == 0)
{
a5dataEnd = true;
}
}
else
{
a5RunLengthCopySize = a5RunLengthCopySize * 2;
}
if (!a5dataEnd)
{
a5globalSkip = a5globalSkip & 0xF0;
if (a5globalSkip == 0)
{
a5globalSkip = GetRunLengthValue(a5dr, ref a5repeat);
}
else
{
// convert value 0x01 - 0x0F number of words to skip in upper nibble to number of bytes to skip
a5globalSkip = a5globalSkip >> 3;
}
do
{
a5belowWriter.Position = a5belowWriter.Position + a5globalSkip;
a5copylength = a5RunLengthCopySize;
do
{
a5belowWriter.WriteByte(a5dr.ReadByte());
a5copylength -= 1;
} while (a5copylength > 0);
a5repeat -= 1;
} while (a5repeat > 0);
}
} while (!a5dataEnd);
}
public MacsBugSymbolScanner(MemoryArea mem)
{
this.rdr = mem.CreateBeReader(0);
this.reValidVariableLengthProcedureName = new Regex(
"[a-zA-Z%_]([a-zA-Z0-9%_.])*");
}
public override Program Load(Address addrLoad, IProcessorArchitecture arch, IPlatform platform)
{
BeImageReader rdr = new BeImageReader(this.RawImage, 0);
DolStructure? str = new StructureReader <DolStructure>(rdr).Read();
if (!str.HasValue)
{
throw new BadImageFormatException("Invalid DOL header.");
}
this.hdr = new DolHeader(str.Value);
var segments = new List <ImageSegment>();
// Create code segments
for (uint i = 0, snum = 1; i < 7; i++, snum++)
{
if (hdr.addressText[i] == Address32.NULL)
{
continue;
}
var bytes = new byte[hdr.sizeText[i]];
Array.Copy(RawImage, hdr.offsetText[i], bytes, 0, bytes.Length);
var mem = new MemoryArea(hdr.addressText[i], bytes);
segments.Add(new ImageSegment(
string.Format("Text{0}", snum),
mem,
AccessMode.ReadExecute));
}
// Create all data segments
for (uint i = 0, snum = 1; i < 11; i++, snum++)
{
if (hdr.addressData[i] == Address32.NULL ||
hdr.sizeData[i] == 0)
{
continue;
}
var bytes = new byte[hdr.sizeData[i]];
Array.Copy(RawImage, hdr.offsetData[i], bytes, 0, bytes.Length);
var mem = new MemoryArea(hdr.addressText[i], bytes);
segments.Add(new ImageSegment(
string.Format("Data{0}", snum),
mem,
AccessMode.ReadWrite));
}
if (hdr.addressBSS != Address32.NULL)
{
segments.Add(new ImageSegment(
".bss",
new MemoryArea(hdr.addressBSS, new byte[hdr.sizeBSS]),
AccessMode.ReadWrite));
}
var segmentMap = new SegmentMap(addrLoad, segments.ToArray());
var entryPoint = new ImageSymbol(this.hdr.entrypoint)
{
Type = SymbolType.Procedure
};
var program = new Program(
segmentMap,
arch,
platform)
{
ImageSymbols = { { this.hdr.entrypoint, entryPoint } },
EntryPoints = { { this.hdr.entrypoint, entryPoint } }
};
return(program);
}
public override Program Load(Address addrLoad, IProcessorArchitecture arch, IPlatform platform)
{
BeImageReader rdr = new BeImageReader(this.RawImage, 0);
try {
this.hdr = new DolHeader(new StructureReader <DolStructure>(rdr).Read());
} catch (Exception ex) {
throw new BadImageFormatException("Invalid DOL header. " + ex.Message);
}
var segments = new List <ImageSegment>();
// Create code segments
for (uint i = 0, snum = 1; i < 7; i++, snum++)
{
if (hdr.addressText[i] == Address32.NULL)
{
continue;
}
segments.Add(new ImageSegment(
string.Format("Text{0}", snum),
hdr.addressText[i], hdr.sizeText[i],
AccessMode.ReadExecute
));
}
// Create all data segments
for (uint i = 0, snum = 1; i < 11; i++, snum++)
{
if (hdr.addressData[i] == Address32.NULL)
{
continue;
}
segments.Add(new ImageSegment(
string.Format("Data{0}", snum),
hdr.addressData[i], hdr.sizeData[i],
AccessMode.ReadWrite
));
}
if (hdr.addressBSS != Address32.NULL)
{
segments.Add(new ImageSegment(
".bss",
hdr.addressBSS, hdr.sizeBSS,
AccessMode.ReadWrite
));
}
var segmentMap = new SegmentMap(addrLoad, segments.ToArray());
var entryPoint = new ImageSymbol(this.hdr.entrypoint)
{
Type = SymbolType.Procedure
};
var program = new Program(
segmentMap,
arch,
platform)
{
ImageSymbols = { { this.hdr.entrypoint, entryPoint } },
EntryPoints = { { this.hdr.entrypoint, entryPoint } }
};
return(program);
}
