private unsafe void EnsureHeader()
{
if (_readyToRunHeader != null)
{
return;
}
uint machine = (uint)PEReader.PEHeaders.CoffHeader.Machine;
_operatingSystem = OperatingSystem.Unknown;
foreach (OperatingSystem os in Enum.GetValues(typeof(OperatingSystem)))
{
_machine = (Machine)(machine ^ (uint)os);
if (Enum.IsDefined(typeof(Machine), _machine))
{
_operatingSystem = os;
break;
}
}
if (_operatingSystem == OperatingSystem.Unknown)
{
throw new BadImageFormatException($"Invalid Machine: {machine}");
}
switch (_machine)
{
case Machine.I386:
_architecture = Architecture.X86;
break;
case Machine.Amd64:
_architecture = Architecture.X64;
break;
case Machine.Arm:
case Machine.Thumb:
case Machine.ArmThumb2:
_architecture = Architecture.Arm;
break;
case Machine.Arm64:
_architecture = Architecture.Arm64;
break;
default:
throw new NotImplementedException(Machine.ToString());
}
_imageBase = PEReader.PEHeaders.PEHeader.ImageBase;
// Initialize R2RHeader
DirectoryEntry r2rHeaderDirectory = PEReader.PEHeaders.CorHeader.ManagedNativeHeaderDirectory;
int r2rHeaderOffset = GetOffset(r2rHeaderDirectory.RelativeVirtualAddress);
_readyToRunHeader = new ReadyToRunHeader(Image, r2rHeaderDirectory.RelativeVirtualAddress, r2rHeaderOffset);
if (r2rHeaderDirectory.Size != ReadyToRunHeader.Size)
{
throw new BadImageFormatException("The calculated size of the R2RHeader doesn't match the size saved in the ManagedNativeHeaderDirectory");
}
}
private unsafe void EnsureHeader()
{
if (_readyToRunHeader != null)
{
return;
}
uint machine = (uint)PEReader.PEHeaders.CoffHeader.Machine;
_operatingSystem = OperatingSystem.Unknown;
foreach (OperatingSystem os in Enum.GetValues(typeof(OperatingSystem)))
{
_machine = (Machine)(machine ^ (uint)os);
if (Enum.IsDefined(typeof(Machine), _machine))
{
_operatingSystem = os;
break;
}
}
if (_operatingSystem == OperatingSystem.Unknown)
{
throw new BadImageFormatException($"Invalid Machine: {machine}");
}
switch (_machine)
{
case Machine.I386:
_architecture = Architecture.X86;
break;
case Machine.Amd64:
_architecture = Architecture.X64;
break;
case Machine.Arm:
case Machine.Thumb:
case Machine.ArmThumb2:
_architecture = Architecture.Arm;
break;
case Machine.Arm64:
_architecture = Architecture.Arm64;
break;
default:
throw new NotImplementedException(Machine.ToString());
}
_imageBase = PEReader.PEHeaders.PEHeader.ImageBase;
// Initialize R2RHeader
Debug.Assert(_readyToRunHeaderRVA != 0);
int r2rHeaderOffset = GetOffset(_readyToRunHeaderRVA);
_readyToRunHeader = new ReadyToRunHeader(Image, _readyToRunHeaderRVA, r2rHeaderOffset);
}
