internal void AddTableEntryPointers(ElfFileTableEntryPointers64 pointers)
{
_fileTable.Add(pointers);
long start = checked ((long)pointers.Start);
if (BaseAddress == 0 || start < BaseAddress)
{
BaseAddress = start;
}
long end = checked ((long)pointers.Stop);
if (_end < end)
{
_end = end;
}
}
internal void AddTableEntryPointers(ElfFileTableEntryPointers64 pointers, bool isExecutable)
{
_fileTable.Add(pointers);
_containsExecutable = _containsExecutable || isExecutable;
long start = checked ((long)pointers.Start);
if (BaseAddress == 0 || start < BaseAddress)
{
BaseAddress = start;
}
long end = checked ((long)pointers.Stop);
if (_end < end)
{
_end = end;
}
}
private void LoadFileTable()
{
if (_loadedImages != null)
{
return;
}
ElfNote fileNote = GetNotes(ElfNoteType.File).Single();
long position = 0;
ulong entryCount = 0;
if (ElfFile.Header.Is64Bit)
{
ElfFileTableHeader64 header = fileNote.ReadContents <ElfFileTableHeader64>(ref position);
entryCount = header.EntryCount;
}
else
{
ElfFileTableHeader32 header = fileNote.ReadContents <ElfFileTableHeader32>(ref position);
entryCount = header.EntryCount;
}
ElfFileTableEntryPointers64[] fileTable = new ElfFileTableEntryPointers64[entryCount];
List <ElfLoadedImage> images = new List <ElfLoadedImage>(fileTable.Length);
Dictionary <string, ElfLoadedImage> lookup = new Dictionary <string, ElfLoadedImage>(fileTable.Length);
for (int i = 0; i < fileTable.Length; i++)
{
if (ElfFile.Header.Is64Bit)
{
fileTable[i] = fileNote.ReadContents <ElfFileTableEntryPointers64>(ref position);
}
else
{
ElfFileTableEntryPointers32 entry = fileNote.ReadContents <ElfFileTableEntryPointers32>(ref position);
fileTable[i].Start = entry.Start;
fileTable[i].Stop = entry.Stop;
fileTable[i].PageOffset = entry.PageOffset;
}
}
long size = fileNote.Header.ContentSize - position;
byte[] bytes = fileNote.ReadContents(position, (int)size);
int start = 0;
for (int i = 0; i < fileTable.Length; i++)
{
int end = start;
while (bytes[end] != 0)
{
end++;
}
string path = Encoding.ASCII.GetString(bytes, start, end - start);
start = end + 1;
if (!lookup.TryGetValue(path, out ElfLoadedImage image))
{
image = lookup[path] = new ElfLoadedImage(ElfFile.VirtualAddressReader, ElfFile.Header.Is64Bit, path);
}
image.AddTableEntryPointers(fileTable[i]);
}
_loadedImages = lookup.Values.OrderBy(i => i.BaseAddress).ToArray();
}
private ImmutableArray <ElfLoadedImage> LoadFileTable()
{
if (!_loadedImages.IsDefault)
{
return(_loadedImages);
}
ElfNote fileNote = GetNotes(ElfNoteType.File).Single();
long position = 0;
ulong entryCount = 0;
if (ElfFile.Header.Is64Bit)
{
ElfFileTableHeader64 header = fileNote.ReadContents <ElfFileTableHeader64>(ref position);
entryCount = header.EntryCount;
}
else
{
ElfFileTableHeader32 header = fileNote.ReadContents <ElfFileTableHeader32>(ref position);
entryCount = header.EntryCount;
}
ElfFileTableEntryPointers64[] fileTable = new ElfFileTableEntryPointers64[entryCount];
Dictionary <string, ElfLoadedImage> lookup = new Dictionary <string, ElfLoadedImage>(fileTable.Length);
for (int i = 0; i < fileTable.Length; i++)
{
if (ElfFile.Header.Is64Bit)
{
fileTable[i] = fileNote.ReadContents <ElfFileTableEntryPointers64>(ref position);
}
else
{
ElfFileTableEntryPointers32 entry = fileNote.ReadContents <ElfFileTableEntryPointers32>(ref position);
fileTable[i].Start = entry.Start;
fileTable[i].Stop = entry.Stop;
fileTable[i].PageOffset = entry.PageOffset;
}
}
int size = (int)(fileNote.Header.ContentSize - position);
byte[] bytes = ArrayPool <byte> .Shared.Rent(size);
try
{
int read = fileNote.ReadContents(position, bytes);
int start = 0;
for (int i = 0; i < fileTable.Length; i++)
{
int end = start;
while (bytes[end] != 0)
{
end++;
}
string path = Encoding.ASCII.GetString(bytes, start, end - start);
start = end + 1;
if (!lookup.TryGetValue(path, out ElfLoadedImage? image))
{
image = lookup[path] = new ElfLoadedImage(ElfFile.VirtualAddressReader, ElfFile.Header.Is64Bit, path);
}
image.AddTableEntryPointers(fileTable[i]);
}
}
finally
{
ArrayPool <byte> .Shared.Return(bytes);
}
return(_loadedImages = lookup.Values.OrderBy(i => i.BaseAddress).ToImmutableArray());
}
