void PatchRawFatMethod(ByteBuffer buffer, MethodSymbols symbols, CodeWriter writer, out MetadataToken local_var_token)
{
var flags = ReadUInt16 ();
buffer.WriteUInt16 (flags);
buffer.WriteUInt16 (ReadUInt16 ());
symbols.code_size = ReadInt32 ();
buffer.WriteInt32 (symbols.code_size);
local_var_token = ReadToken ();
if (local_var_token.RID > 0) {
var variables = symbols.variables = ReadVariables (local_var_token);
buffer.WriteUInt32 (variables != null
? writer.GetStandAloneSignature (symbols.variables).ToUInt32 ()
: 0);
} else
buffer.WriteUInt32 (0);
PatchRawCode (buffer, symbols.code_size, writer);
if ((flags & 0x8) != 0)
PatchRawSection (buffer, writer.metadata);
}
void PatchResourceDataEntry(ByteBuffer resources)
{
var old_rsrc = GetImageResourceSection ();
var rva = resources.ReadUInt32 ();
resources.position -= 4;
resources.WriteUInt32 (rva - old_rsrc.VirtualAddress + rsrc.VirtualAddress);
}
void PatchRawExceptionHandlers(ByteBuffer buffer, MetadataBuilder metadata, int count, bool fat_entry)
{
const int fat_entry_size = 16;
const int small_entry_size = 6;
for (int i = 0; i < count; i++) {
ExceptionHandlerType handler_type;
if (fat_entry) {
var type = ReadUInt32 ();
handler_type = (ExceptionHandlerType) (type & 0x7);
buffer.WriteUInt32 (type);
} else {
var type = ReadUInt16 ();
handler_type = (ExceptionHandlerType) (type & 0x7);
buffer.WriteUInt16 (type);
}
buffer.WriteBytes (ReadBytes (fat_entry ? fat_entry_size : small_entry_size));
switch (handler_type) {
case ExceptionHandlerType.Catch:
var exception = reader.LookupToken (ReadToken ());
buffer.WriteUInt32 (metadata.LookupToken (exception).ToUInt32 ());
break;
default:
buffer.WriteUInt32 (ReadUInt32 ());
break;
}
}
}
void PatchRawCode(ByteBuffer buffer, int code_size, CodeWriter writer)
{
var metadata = writer.metadata;
buffer.WriteBytes (ReadBytes (code_size));
var end = buffer.position;
buffer.position -= code_size;
while (buffer.position < end) {
OpCode opcode;
var il_opcode = buffer.ReadByte ();
if (il_opcode != 0xfe) {
opcode = OpCodes.OneByteOpCode [il_opcode];
} else {
var il_opcode2 = buffer.ReadByte ();
opcode = OpCodes.TwoBytesOpCode [il_opcode2];
}
switch (opcode.OperandType) {
case OperandType.ShortInlineI:
case OperandType.ShortInlineBrTarget:
case OperandType.ShortInlineVar:
case OperandType.ShortInlineArg:
buffer.position += 1;
break;
case OperandType.InlineVar:
case OperandType.InlineArg:
buffer.position += 2;
break;
case OperandType.InlineBrTarget:
case OperandType.ShortInlineR:
case OperandType.InlineI:
buffer.position += 4;
break;
case OperandType.InlineI8:
case OperandType.InlineR:
buffer.position += 8;
break;
case OperandType.InlineSwitch:
var length = buffer.ReadInt32 ();
buffer.position += length * 4;
break;
case OperandType.InlineString:
var @string = GetString (new MetadataToken (buffer.ReadUInt32 ()));
buffer.position -= 4;
buffer.WriteUInt32 (
new MetadataToken (
TokenType.String,
metadata.user_string_heap.GetStringIndex (@string)).ToUInt32 ());
break;
case OperandType.InlineSig:
var call_site = GetCallSite (new MetadataToken (buffer.ReadUInt32 ()));
buffer.position -= 4;
buffer.WriteUInt32 (writer.GetStandAloneSignature (call_site).ToUInt32 ());
break;
case OperandType.InlineTok:
case OperandType.InlineType:
case OperandType.InlineMethod:
case OperandType.InlineField:
var provider = reader.LookupToken (new MetadataToken (buffer.ReadUInt32 ()));
buffer.position -= 4;
buffer.WriteUInt32 (metadata.LookupToken (provider).ToUInt32 ());
break;
}
}
}
void PatchResourceDataEntry(ByteBuffer resources)
{
var rva = resources.ReadUInt32 ();
resources.position -= 4;
resources.WriteUInt32 (rva - win32_rva + rsrc.VirtualAddress);
}
static void PatchResourceDataEntry(ByteBuffer resources, Section old, Section @new)
{
uint num = resources.ReadUInt32();
resources.Position -= 4;
resources.WriteUInt32(num - old.VirtualAddress + @new.VirtualAddress);
}
public bool GetDebugHeader(out ImageDebugDirectory directory, out byte [] header)
{
if (IsEmbedded) {
directory = new ImageDebugDirectory ();
header = Empty<byte>.Array;
return false;
}
directory = new ImageDebugDirectory () {
MajorVersion = 256,
MinorVersion = 20577,
Type = 2,
};
var buffer = new ByteBuffer ();
// RSDS
buffer.WriteUInt32 (0x53445352);
// Module ID
buffer.WriteBytes (module.Mvid.ToByteArray ());
// PDB Age
buffer.WriteUInt32 (1);
// PDB Path
buffer.WriteBytes (System.Text.Encoding.UTF8.GetBytes (writer.BaseStream.GetFileName ()));
buffer.WriteByte (0);
header = new byte [buffer.length];
Buffer.BlockCopy (buffer.buffer, 0, header, 0, buffer.length);
directory.SizeOfData = header.Length;
return true;
}
