void Read()
{
// Refs: coreclr/src/vm/{ecalllist.h,mscorlib.cpp,ecall.h,ecall.cpp}
long pos = 0;
long end = reader.Length - (3 * ptrSize - 1);
List <ECClass> eccList = new List <ECClass>();
for (; pos <= end; pos += ptrSize)
{
tableFormat = null;
var ecc = ReadECClass(pos, true);
if (ecc is null)
{
continue;
}
for (long pos2 = pos; pos2 <= end; pos2 += 3 * ptrSize)
{
ecc = ReadECClass(pos2, false);
if (ecc is null)
{
break;
}
eccList.Add(ecc.Value);
}
if (eccList.Count >= 20)
{
break;
}
eccList.Clear();
}
list.AddRange(eccList);
}
public ECallListReader(string filename)
{
peImage = new PEImage(filename);
reader = peImage.CreateReader();
is32bit = peImage.ImageNTHeaders.OptionalHeader.Magic == 0x010B;
ptrSize = is32bit ? 4U : 8;
var last = peImage.ImageSectionHeaders[peImage.ImageSectionHeaders.Count - 1];
endRva = (uint)last.VirtualAddress + last.VirtualSize;
list = new List <ECClass>();
tableFormat = null;
Read();
}
void InitializeTableFormat(long pos)
{
if (pos + ptrSize > reader.Length)
{
return;
}
ulong flags = ReadPtr(pos);
if ((flags & (ulong)FCFuncFlag.EndOfArray) != 0)
{
return;
}
bool hasSig = (flags & (ulong)FCFuncFlag.HasSignature) != 0;
if (pos + ptrSize * (5 + (hasSig ? 1 : 0)) < reader.Length)
{
uint? methRva = ReadRva(pos + ptrSize * 1);
ulong nullPtr1 = ReadPtr(pos + ptrSize * 2);
ulong nullPtr2 = ReadPtr(pos + ptrSize * 3);
var name = ReadAsciizIdPtr(pos + ptrSize * 4);
if (nullPtr1 == 0 && nullPtr2 == 0 && !(name is null) && !(methRva is null) && (methRva.Value == 0 || IsCodeRva(methRva.Value)))
{
tableFormat = TableFormat.V1;
return;
}
}
if (pos + ptrSize * (3 + (hasSig ? 1 : 0)) < reader.Length)
{
uint?methRva = ReadRva(pos + ptrSize * 1);
var name = ReadAsciizIdPtr(pos + ptrSize * 2);
if (!(name is null) && !(methRva is null) && (methRva.Value == 0 || IsCodeRva(methRva.Value)))
{
tableFormat = TableFormat.V2;
return;
}
}
}
void InitializeTableFormat(long pos) {
if (pos + ptrSize > reader.Length)
return;
ulong flags = ReadPtr(pos);
if ((flags & (ulong)FCFuncFlag.EndOfArray) != 0)
return;
bool hasSig = (flags & (ulong)FCFuncFlag.HasSignature) != 0;
if (pos + ptrSize * (5 + (hasSig ? 1 : 0)) < reader.Length) {
uint? methRva = ReadRva(pos + ptrSize * 1);
ulong nullPtr1 = ReadPtr(pos + ptrSize * 2);
ulong nullPtr2 = ReadPtr(pos + ptrSize * 3);
var name = ReadAsciizIdPtr(pos + ptrSize * 4);
if (nullPtr1 == 0 && nullPtr2 == 0 && name != null && methRva != null && (methRva.Value == 0 || IsCodeRva(methRva.Value))) {
tableFormat = TableFormat.V1;
return;
}
}
if (pos + ptrSize * (3 + (hasSig ? 1 : 0)) < reader.Length) {
uint? methRva = ReadRva(pos + ptrSize * 1);
var name = ReadAsciizIdPtr(pos + ptrSize * 2);
if (name != null && methRva != null && (methRva.Value == 0 || IsCodeRva(methRva.Value))) {
tableFormat = TableFormat.V2;
return;
}
}
}
void Read() {
// Refs: coreclr/src/vm/{ecalllist.h,mscorlib.cpp,ecall.h,ecall.cpp}
long pos = 0;
long end = reader.Length - (3 * ptrSize - 1);
List<ECClass> eccList = new List<ECClass>();
for (; pos <= end; pos += ptrSize) {
tableFormat = null;
var ecc = ReadECClass(pos, true);
if (ecc == null)
continue;
for (long pos2 = pos; pos2 <= end; pos2 += 3 * ptrSize) {
ecc = ReadECClass(pos2, false);
if (ecc == null)
break;
eccList.Add(ecc.Value);
}
if (eccList.Count >= 20)
break;
eccList.Clear();
}
list.AddRange(eccList);
}
public ECallListReader(string filename) {
this.peImage = new PEImage(filename);
this.reader = peImage.CreateFullStream();
this.is32bit = peImage.ImageNTHeaders.OptionalHeader.Magic == 0x010B;
this.ptrSize = is32bit ? 4U : 8;
var last = peImage.ImageSectionHeaders[peImage.ImageSectionHeaders.Count - 1];
this.endRva = (uint)last.VirtualAddress + last.VirtualSize;
this.list = new List<ECClass>();
this.tableFormat = null;
Read();
}
