public static MethodBody ReadMethodBody (MethodDefinition method, MetadataReader metadata)
{
var reader = new CodeReader (method, metadata);
reader.body = new MethodBody (method);
reader.ReadMethodBody ();
return reader.body;
}
public ReflectionReader(ModuleDefinition module)
{
m_module = module;
m_reader = m_module.ImageReader;
m_root = m_module.Image.MetadataRoot;
m_tHeap = m_root.Streams.TablesHeap;
m_checkDeleted = (m_tHeap.HeapSizes & 0x80) != 0;
if (m_reader != null)
m_tableReader = m_reader.MetadataReader.TableReader;
m_codeReader = new CodeReader (this);
m_sigReader = new SignatureReader (m_root, this);
m_isCorlib = module.Assembly.Name.Name == Constants.Corlib;
}
public Instruction Create(OpCode opcode, int i)
{
if (opcode.OperandType == OperandType.InlineVar)
{
return(Create(opcode, m_mbody.Variables [i]));
}
if (opcode.OperandType == OperandType.InlineParam)
{
return(Create(opcode, CodeReader.GetParameter(m_mbody, i)));
}
if (opcode.OperandType != OperandType.InlineI)
{
throw new ArgumentException("opcode");
}
return(FinalCreate(opcode, i));
}
public Instruction Create(OpCode opcode, byte b)
{
if (opcode.OperandType == OperandType.ShortInlineVar)
{
return(Create(opcode, m_mbody.Variables [b]));
}
if (opcode.OperandType == OperandType.ShortInlineParam)
{
return(Create(opcode, CodeReader.GetParameter(m_mbody, b)));
}
if (opcode.OperandType != OperandType.ShortInlineI ||
opcode == OpCodes.Ldc_I4_S)
{
throw new ArgumentException("opcode");
}
return(FinalCreate(opcode, b));
}
public ByteBuffer PatchRawMethodBody(MethodDefinition method, CodeWriter writer, out MethodSymbols symbols)
{
MetadataToken zero;
ByteBuffer byteBuffer = new ByteBuffer();
symbols = new MethodSymbols(method.Name);
this.method = method;
this.reader.context = method;
this.MoveTo(method.RVA);
byte num = base.ReadByte();
int num1 = num & 3;
if (num1 == 2)
{
byteBuffer.WriteByte(num);
zero = MetadataToken.Zero;
symbols.code_size = num >> 2;
this.PatchRawCode(byteBuffer, symbols.code_size, writer);
}
else
{
if (num1 != 3)
{
throw new NotSupportedException();
}
this.position--;
this.PatchRawFatMethod(byteBuffer, symbols, writer, out zero);
}
ISymbolReader symbolReader = this.reader.module.symbol_reader;
if (symbolReader != null && writer.metadata.write_symbols)
{
symbols.method_token = CodeReader.GetOriginalToken(writer.metadata, method);
symbols.local_var_token = zero;
symbolReader.Read(symbols);
}
return(byteBuffer);
}
public static void FromBytes(MethodDefinition method, byte[] bytes)
{
CodeReader cr = new CodeReader(method, bytes);
method.Body = cr.ReadMethodBody(method);
}
public void Simplify()
{
foreach (Instruction i in this.Instructions)
{
if (i.OpCode.OpCodeType != OpCodeType.Macro)
{
continue;
}
switch (i.OpCode.Code)
{
case Code.Ldarg_0:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 0));
break;
case Code.Ldarg_1:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 1));
break;
case Code.Ldarg_2:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 2));
break;
case Code.Ldarg_3:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 3));
break;
case Code.Ldloc_0:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 0));
break;
case Code.Ldloc_1:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 1));
break;
case Code.Ldloc_2:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 2));
break;
case Code.Ldloc_3:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 3));
break;
case Code.Stloc_0:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 0));
break;
case Code.Stloc_1:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 1));
break;
case Code.Stloc_2:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 2));
break;
case Code.Stloc_3:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 3));
break;
case Code.Ldarg_S:
i.OpCode = OpCodes.Ldarg;
break;
case Code.Ldarga_S:
i.OpCode = OpCodes.Ldarga;
break;
case Code.Starg_S:
i.OpCode = OpCodes.Starg;
break;
case Code.Ldloc_S:
i.OpCode = OpCodes.Ldloc;
break;
case Code.Ldloca_S:
i.OpCode = OpCodes.Ldloca;
break;
case Code.Stloc_S:
i.OpCode = OpCodes.Stloc;
break;
case Code.Ldc_I4_M1:
Modify(i, OpCodes.Ldc_I4, -1);
break;
case Code.Ldc_I4_0:
Modify(i, OpCodes.Ldc_I4, 0);
break;
case Code.Ldc_I4_1:
Modify(i, OpCodes.Ldc_I4, 1);
break;
case Code.Ldc_I4_2:
Modify(i, OpCodes.Ldc_I4, 2);
break;
case Code.Ldc_I4_3:
Modify(i, OpCodes.Ldc_I4, 3);
break;
case Code.Ldc_I4_4:
Modify(i, OpCodes.Ldc_I4, 4);
break;
case Code.Ldc_I4_5:
Modify(i, OpCodes.Ldc_I4, 5);
break;
case Code.Ldc_I4_6:
Modify(i, OpCodes.Ldc_I4, 6);
break;
case Code.Ldc_I4_7:
Modify(i, OpCodes.Ldc_I4, 7);
break;
case Code.Ldc_I4_8:
Modify(i, OpCodes.Ldc_I4, 8);
break;
case Code.Ldc_I4_S:
i.OpCode = OpCodes.Ldc_I4;
i.Operand = (int)(sbyte)i.Operand;
break;
case Code.Br_S:
i.OpCode = OpCodes.Br;
break;
case Code.Brfalse_S:
i.OpCode = OpCodes.Brfalse;
break;
case Code.Brtrue_S:
i.OpCode = OpCodes.Brtrue;
break;
case Code.Beq_S:
i.OpCode = OpCodes.Beq;
break;
case Code.Bge_S:
i.OpCode = OpCodes.Bge;
break;
case Code.Bgt_S:
i.OpCode = OpCodes.Bgt;
break;
case Code.Ble_S:
i.OpCode = OpCodes.Ble;
break;
case Code.Blt_S:
i.OpCode = OpCodes.Blt;
break;
case Code.Bne_Un_S:
i.OpCode = OpCodes.Bne_Un;
break;
case Code.Bge_Un_S:
i.OpCode = OpCodes.Bge_Un;
break;
case Code.Bgt_Un_S:
i.OpCode = OpCodes.Bgt_Un;
break;
case Code.Ble_Un_S:
i.OpCode = OpCodes.Ble_Un;
break;
case Code.Blt_Un_S:
i.OpCode = OpCodes.Blt_Un;
break;
case Code.Leave_S:
i.OpCode = OpCodes.Leave;
break;
}
}
}
public void Simplify()
{
foreach (Instruction i in this.Instructions)
{
if (i.OpCode.OpCodeType != OpCodeType.Macro)
{
continue;
}
switch (i.OpCode.Code)
{
case Code.Ldarg_0:
Simplify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 0));
break;
case Code.Ldarg_1:
Simplify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 1));
break;
case Code.Ldarg_2:
Simplify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 2));
break;
case Code.Ldarg_3:
Simplify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 3));
break;
case Code.Ldloc_0:
Simplify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 0));
break;
case Code.Ldloc_1:
Simplify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 1));
break;
case Code.Ldloc_2:
Simplify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 2));
break;
case Code.Ldloc_3:
Simplify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 3));
break;
case Code.Stloc_0:
Simplify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 0));
break;
case Code.Stloc_1:
Simplify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 1));
break;
case Code.Stloc_2:
Simplify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 2));
break;
case Code.Stloc_3:
Simplify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 3));
break;
case Code.Ldarg_S:
i.OpCode = OpCodes.Ldarg;
break;
case Code.Ldarga_S:
SimplifyFromByte(i, OpCodes.Ldarga);
break;
case Code.Starg_S:
i.OpCode = OpCodes.Starg;
break;
case Code.Ldloc_S:
i.OpCode = OpCodes.Ldloc;
break;
case Code.Ldloca_S:
Simplify(i, OpCodes.Ldloca,
CodeReader.GetVariable(this, (sbyte)i.Operand));
break;
case Code.Stloc_S:
i.OpCode = OpCodes.Stloc;
break;
case Code.Ldc_I4_M1:
Simplify(i, OpCodes.Ldc_I4, -1);
break;
case Code.Ldc_I4_0:
Simplify(i, OpCodes.Ldc_I4, 0);
break;
case Code.Ldc_I4_1:
Simplify(i, OpCodes.Ldc_I4, 1);
break;
case Code.Ldc_I4_2:
Simplify(i, OpCodes.Ldc_I4, 2);
break;
case Code.Ldc_I4_3:
Simplify(i, OpCodes.Ldc_I4, 3);
break;
case Code.Ldc_I4_4:
Simplify(i, OpCodes.Ldc_I4, 4);
break;
case Code.Ldc_I4_5:
Simplify(i, OpCodes.Ldc_I4, 5);
break;
case Code.Ldc_I4_6:
Simplify(i, OpCodes.Ldc_I4, 6);
break;
case Code.Ldc_I4_7:
Simplify(i, OpCodes.Ldc_I4, 7);
break;
case Code.Ldc_I4_8:
Simplify(i, OpCodes.Ldc_I4, 8);
break;
case Code.Ldc_I4_S:
SimplifyFromSByte(i, OpCodes.Ldc_I4);
break;
case Code.Br_S:
SimplifyFromSByte(i, OpCodes.Br);
break;
case Code.Brfalse_S:
SimplifyFromSByte(i, OpCodes.Brfalse);
break;
case Code.Brtrue_S:
SimplifyFromSByte(i, OpCodes.Brtrue);
break;
case Code.Beq_S:
SimplifyFromSByte(i, OpCodes.Beq);
break;
case Code.Bge_S:
SimplifyFromSByte(i, OpCodes.Bge);
break;
case Code.Bgt_S:
SimplifyFromSByte(i, OpCodes.Bgt);
break;
case Code.Ble_S:
SimplifyFromSByte(i, OpCodes.Ble);
break;
case Code.Blt_S:
SimplifyFromSByte(i, OpCodes.Blt);
break;
case Code.Bne_Un_S:
SimplifyFromSByte(i, OpCodes.Bne_Un);
break;
case Code.Bge_Un_S:
SimplifyFromSByte(i, OpCodes.Bge_Un);
break;
case Code.Bgt_Un_S:
SimplifyFromSByte(i, OpCodes.Bgt_Un);
break;
case Code.Ble_Un_S:
SimplifyFromSByte(i, OpCodes.Ble_Un);
break;
case Code.Blt_Un_S:
SimplifyFromSByte(i, OpCodes.Blt_Un);
break;
}
}
}
public static void FromBytes(MethodDefinition method, byte[] bytes)
{
CodeReader cr = new CodeReader(method, bytes);
method.Body = cr.ReadMethodBody(method);
}
private Instruction GetInstruction(int offset)
{
return(CodeReader.GetInstruction(this.body.Instructions, offset));
}
