static int CountCilInstructions(MemoryReader memReader) {
int count = 0;
while (memReader.NotEndOfBytes) {
count++;
OperationCode cilOpCode = memReader.ReadOpcode();
switch (cilOpCode) {
case OperationCode.Ldarg_S:
case OperationCode.Ldarga_S:
case OperationCode.Starg_S:
case OperationCode.Ldloc_S:
case OperationCode.Ldloca_S:
case OperationCode.Stloc_S:
case OperationCode.Ldc_I4_S:
case OperationCode.Br_S:
case OperationCode.Brfalse_S:
case OperationCode.Brtrue_S:
case OperationCode.Beq_S:
case OperationCode.Bge_S:
case OperationCode.Bgt_S:
case OperationCode.Ble_S:
case OperationCode.Blt_S:
case OperationCode.Bne_Un_S:
case OperationCode.Bge_Un_S:
case OperationCode.Bgt_Un_S:
case OperationCode.Ble_Un_S:
case OperationCode.Blt_Un_S:
case OperationCode.Leave_S:
case OperationCode.Unaligned_:
case OperationCode.No_:
memReader.SkipBytes(1);
break;
case OperationCode.Ldarg:
case OperationCode.Ldarga:
case OperationCode.Starg:
case OperationCode.Ldloc:
case OperationCode.Ldloca:
case OperationCode.Stloc:
memReader.SkipBytes(2);
break;
case OperationCode.Ldc_I4:
case OperationCode.Jmp:
case OperationCode.Call:
case OperationCode.Calli:
case OperationCode.Br:
case OperationCode.Brfalse:
case OperationCode.Brtrue:
case OperationCode.Beq:
case OperationCode.Bge:
case OperationCode.Bgt:
case OperationCode.Ble:
case OperationCode.Blt:
case OperationCode.Bne_Un:
case OperationCode.Bge_Un:
case OperationCode.Bgt_Un:
case OperationCode.Ble_Un:
case OperationCode.Blt_Un:
case OperationCode.Callvirt:
case OperationCode.Cpobj:
case OperationCode.Ldobj:
case OperationCode.Ldstr:
case OperationCode.Newobj:
case OperationCode.Castclass:
case OperationCode.Isinst:
case OperationCode.Unbox:
case OperationCode.Ldfld:
case OperationCode.Ldflda:
case OperationCode.Stfld:
case OperationCode.Ldsfld:
case OperationCode.Ldsflda:
case OperationCode.Stsfld:
case OperationCode.Stobj:
case OperationCode.Box:
case OperationCode.Newarr:
case OperationCode.Ldelema:
case OperationCode.Ldelem:
case OperationCode.Stelem:
case OperationCode.Unbox_Any:
case OperationCode.Refanyval:
case OperationCode.Mkrefany:
case OperationCode.Ldtoken:
case OperationCode.Leave:
case OperationCode.Ldftn:
case OperationCode.Ldvirtftn:
case OperationCode.Initobj:
case OperationCode.Constrained_:
case OperationCode.Sizeof:
case OperationCode.Ldc_R4:
memReader.SkipBytes(4);
break;
case OperationCode.Ldc_I8:
case OperationCode.Ldc_R8:
memReader.SkipBytes(8);
break;
case OperationCode.Switch:
int numTargets = (int)memReader.ReadUInt32();
memReader.SkipBytes(4*numTargets);
break;
default:
break;
}
}
memReader.SeekOffset(0);
return count;
}
bool PopulateCilInstructions() {
MethodBodyDocument document = new MethodBodyDocument(this.MethodDefinition);
MemoryReader memReader = new MemoryReader(this.MethodIL.EncodedILMemoryBlock);
var numInstructions = CountCilInstructions(memReader);
if (numInstructions == 0) return true;
CilInstruction[] instrList = new CilInstruction[numInstructions];
int instructionNumber = 0;
while (memReader.NotEndOfBytes) {
object/*?*/ value = null;
uint offset = (uint)memReader.Offset;
OperationCode cilOpCode = memReader.ReadOpcode();
switch (cilOpCode) {
case OperationCode.Nop:
case OperationCode.Break:
break;
case OperationCode.Ldarg_0:
case OperationCode.Ldarg_1:
case OperationCode.Ldarg_2:
case OperationCode.Ldarg_3:
value = this.GetParameter((uint)(cilOpCode - OperationCode.Ldarg_0));
break;
case OperationCode.Ldloc_0:
case OperationCode.Ldloc_1:
case OperationCode.Ldloc_2:
case OperationCode.Ldloc_3:
value = this.GetLocal((uint)(cilOpCode - OperationCode.Ldloc_0));
break;
case OperationCode.Stloc_0:
case OperationCode.Stloc_1:
case OperationCode.Stloc_2:
case OperationCode.Stloc_3:
value = this.GetLocal((uint)(cilOpCode - OperationCode.Stloc_0));
break;
case OperationCode.Ldarg_S:
case OperationCode.Ldarga_S:
case OperationCode.Starg_S:
value = this.GetParameter(memReader.ReadByte());
break;
case OperationCode.Ldloc_S:
case OperationCode.Ldloca_S:
case OperationCode.Stloc_S:
value = this.GetLocal(memReader.ReadByte());
break;
case OperationCode.Ldnull:
case OperationCode.Ldc_I4_M1:
case OperationCode.Ldc_I4_0:
case OperationCode.Ldc_I4_1:
case OperationCode.Ldc_I4_2:
case OperationCode.Ldc_I4_3:
case OperationCode.Ldc_I4_4:
case OperationCode.Ldc_I4_5:
case OperationCode.Ldc_I4_6:
case OperationCode.Ldc_I4_7:
case OperationCode.Ldc_I4_8:
break;
case OperationCode.Ldc_I4_S:
value = (int)memReader.ReadSByte();
break;
case OperationCode.Ldc_I4:
value = memReader.ReadInt32();
break;
case OperationCode.Ldc_I8:
value = memReader.ReadInt64();
break;
case OperationCode.Ldc_R4:
value = memReader.ReadSingle();
break;
case OperationCode.Ldc_R8:
value = memReader.ReadDouble();
break;
case OperationCode.Dup:
case OperationCode.Pop:
break;
case OperationCode.Jmp:
value = this.GetMethod(memReader.ReadUInt32());
break;
case OperationCode.Call: {
IMethodReference methodReference = this.GetMethod(memReader.ReadUInt32());
IArrayTypeReference/*?*/ arrayType = methodReference.ContainingType as IArrayTypeReference;
if (arrayType != null) {
// For Get(), Set() and Address() on arrays, the runtime provides method implementations.
// Hence, CCI2 replaces these with pseudo instrcutions Array_Set, Array_Get and Array_Addr.
// All other methods on arrays will not use pseudo instruction and will have methodReference as their operand.
if (methodReference.Name.UniqueKey == this.PEFileToObjectModel.NameTable.Set.UniqueKey) {
cilOpCode = OperationCode.Array_Set;
value = arrayType;
} else if (methodReference.Name.UniqueKey == this.PEFileToObjectModel.NameTable.Get.UniqueKey) {
cilOpCode = OperationCode.Array_Get;
value = arrayType;
} else if (methodReference.Name.UniqueKey == this.PEFileToObjectModel.NameTable.Address.UniqueKey) {
cilOpCode = OperationCode.Array_Addr;
value = arrayType;
} else {
value = methodReference;
}
} else {
value = methodReference;
}
}
break;
case OperationCode.Calli:
value = this.GetFunctionPointerType(memReader.ReadUInt32());
break;
case OperationCode.Ret:
break;
case OperationCode.Br_S:
case OperationCode.Brfalse_S:
case OperationCode.Brtrue_S:
case OperationCode.Beq_S:
case OperationCode.Bge_S:
case OperationCode.Bgt_S:
case OperationCode.Ble_S:
case OperationCode.Blt_S:
case OperationCode.Bne_Un_S:
case OperationCode.Bge_Un_S:
case OperationCode.Bgt_Un_S:
case OperationCode.Ble_Un_S:
case OperationCode.Blt_Un_S: {
uint jumpOffset = (uint)(memReader.Offset + 1 + memReader.ReadSByte());
if (jumpOffset >= this.EndOfMethodOffset) {
// Error...
}
value = jumpOffset;
}
break;
case OperationCode.Br:
case OperationCode.Brfalse:
case OperationCode.Brtrue:
case OperationCode.Beq:
case OperationCode.Bge:
case OperationCode.Bgt:
case OperationCode.Ble:
case OperationCode.Blt:
case OperationCode.Bne_Un:
case OperationCode.Bge_Un:
case OperationCode.Bgt_Un:
case OperationCode.Ble_Un:
case OperationCode.Blt_Un: {
uint jumpOffset = (uint)(memReader.Offset + 4 + memReader.ReadInt32());
if (jumpOffset >= this.EndOfMethodOffset) {
// Error...
}
value = jumpOffset;
}
break;
case OperationCode.Switch: {
uint numTargets = memReader.ReadUInt32();
uint[] result = new uint[numTargets];
uint asOffset = memReader.Offset + numTargets * 4;
for (int i = 0; i < numTargets; i++) {
uint targetAddress = memReader.ReadUInt32() + asOffset;
if (targetAddress >= this.EndOfMethodOffset) {
// Error...
}
result[i] = targetAddress;
}
value = result;
}
break;
case OperationCode.Ldind_I1:
case OperationCode.Ldind_U1:
case OperationCode.Ldind_I2:
case OperationCode.Ldind_U2:
case OperationCode.Ldind_I4:
case OperationCode.Ldind_U4:
case OperationCode.Ldind_I8:
case OperationCode.Ldind_I:
case OperationCode.Ldind_R4:
case OperationCode.Ldind_R8:
case OperationCode.Ldind_Ref:
case OperationCode.Stind_Ref:
case OperationCode.Stind_I1:
case OperationCode.Stind_I2:
case OperationCode.Stind_I4:
case OperationCode.Stind_I8:
case OperationCode.Stind_R4:
case OperationCode.Stind_R8:
case OperationCode.Add:
case OperationCode.Sub:
case OperationCode.Mul:
case OperationCode.Div:
case OperationCode.Div_Un:
case OperationCode.Rem:
case OperationCode.Rem_Un:
case OperationCode.And:
case OperationCode.Or:
case OperationCode.Xor:
case OperationCode.Shl:
case OperationCode.Shr:
case OperationCode.Shr_Un:
case OperationCode.Neg:
case OperationCode.Not:
case OperationCode.Conv_I1:
case OperationCode.Conv_I2:
case OperationCode.Conv_I4:
case OperationCode.Conv_I8:
case OperationCode.Conv_R4:
case OperationCode.Conv_R8:
case OperationCode.Conv_U4:
case OperationCode.Conv_U8:
break;
case OperationCode.Callvirt: {
IMethodReference methodReference = this.GetMethod(memReader.ReadUInt32());
IArrayTypeReference/*?*/ arrayType = methodReference.ContainingType as IArrayTypeReference;
if (arrayType != null) {
// For Get(), Set() and Address() on arrays, the runtime provides method implementations.
// Hence, CCI2 replaces these with pseudo instructions Array_Set, Array_Get and Array_Addr.
// All other methods on arrays will not use pseudo instruction and will have methodReference as their operand.
if (methodReference.Name.UniqueKey == this.PEFileToObjectModel.NameTable.Set.UniqueKey) {
cilOpCode = OperationCode.Array_Set;
value = arrayType;
} else if (methodReference.Name.UniqueKey == this.PEFileToObjectModel.NameTable.Get.UniqueKey) {
cilOpCode = OperationCode.Array_Get;
value = arrayType;
} else if (methodReference.Name.UniqueKey == this.PEFileToObjectModel.NameTable.Address.UniqueKey) {
cilOpCode = OperationCode.Array_Addr;
value = arrayType;
} else {
value = methodReference;
}
} else {
value = methodReference;
}
}
break;
case OperationCode.Cpobj:
case OperationCode.Ldobj:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Ldstr:
value = this.GetUserStringForToken(memReader.ReadUInt32());
break;
case OperationCode.Newobj: {
IMethodReference methodReference = this.GetMethod(memReader.ReadUInt32());
IArrayTypeReference/*?*/ arrayType = methodReference.ContainingType as IArrayTypeReference;
if (arrayType != null && !arrayType.IsVector) {
uint numParam = IteratorHelper.EnumerableCount(methodReference.Parameters);
if (numParam != arrayType.Rank)
cilOpCode = OperationCode.Array_Create_WithLowerBound;
else
cilOpCode = OperationCode.Array_Create;
value = arrayType;
} else {
value = methodReference;
}
}
break;
case OperationCode.Castclass:
case OperationCode.Isinst:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Conv_R_Un:
break;
case OperationCode.Unbox:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Throw:
break;
case OperationCode.Ldfld:
case OperationCode.Ldflda:
case OperationCode.Stfld:
value = this.GetField(memReader.ReadUInt32());
break;
case OperationCode.Ldsfld:
case OperationCode.Ldsflda:
case OperationCode.Stsfld:
value = this.GetField(memReader.ReadUInt32());
var fieldRef = value as FieldReference;
if (fieldRef != null) fieldRef.isStatic = true;
break;
case OperationCode.Stobj:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Conv_Ovf_I1_Un:
case OperationCode.Conv_Ovf_I2_Un:
case OperationCode.Conv_Ovf_I4_Un:
case OperationCode.Conv_Ovf_I8_Un:
case OperationCode.Conv_Ovf_U1_Un:
case OperationCode.Conv_Ovf_U2_Un:
case OperationCode.Conv_Ovf_U4_Un:
case OperationCode.Conv_Ovf_U8_Un:
case OperationCode.Conv_Ovf_I_Un:
case OperationCode.Conv_Ovf_U_Un:
break;
case OperationCode.Box:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Newarr: {
var elementType = this.GetType(memReader.ReadUInt32());
if (elementType != null)
value = Vector.GetVector(elementType, PEFileToObjectModel.InternFactory);
else
value = Dummy.ArrayType;
}
break;
case OperationCode.Ldlen:
break;
case OperationCode.Ldelema:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Ldelem_I1:
case OperationCode.Ldelem_U1:
case OperationCode.Ldelem_I2:
case OperationCode.Ldelem_U2:
case OperationCode.Ldelem_I4:
case OperationCode.Ldelem_U4:
case OperationCode.Ldelem_I8:
case OperationCode.Ldelem_I:
case OperationCode.Ldelem_R4:
case OperationCode.Ldelem_R8:
case OperationCode.Ldelem_Ref:
case OperationCode.Stelem_I:
case OperationCode.Stelem_I1:
case OperationCode.Stelem_I2:
case OperationCode.Stelem_I4:
case OperationCode.Stelem_I8:
case OperationCode.Stelem_R4:
case OperationCode.Stelem_R8:
case OperationCode.Stelem_Ref:
break;
case OperationCode.Ldelem:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Stelem:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Unbox_Any:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Conv_Ovf_I1:
case OperationCode.Conv_Ovf_U1:
case OperationCode.Conv_Ovf_I2:
case OperationCode.Conv_Ovf_U2:
case OperationCode.Conv_Ovf_I4:
case OperationCode.Conv_Ovf_U4:
case OperationCode.Conv_Ovf_I8:
case OperationCode.Conv_Ovf_U8:
break;
case OperationCode.Refanyval:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Ckfinite:
break;
case OperationCode.Mkrefany:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Ldtoken:
value = this.GetRuntimeHandleFromToken(memReader.ReadUInt32());
break;
case OperationCode.Conv_U2:
case OperationCode.Conv_U1:
case OperationCode.Conv_I:
case OperationCode.Conv_Ovf_I:
case OperationCode.Conv_Ovf_U:
case OperationCode.Add_Ovf:
case OperationCode.Add_Ovf_Un:
case OperationCode.Mul_Ovf:
case OperationCode.Mul_Ovf_Un:
case OperationCode.Sub_Ovf:
case OperationCode.Sub_Ovf_Un:
case OperationCode.Endfinally:
break;
case OperationCode.Leave: {
uint leaveOffset = (uint)(memReader.Offset + 4 + memReader.ReadInt32());
if (leaveOffset >= this.EndOfMethodOffset) {
// Error...
}
value = leaveOffset;
}
break;
case OperationCode.Leave_S: {
uint leaveOffset = (uint)(memReader.Offset + 1 + memReader.ReadSByte());
if (leaveOffset >= this.EndOfMethodOffset) {
// Error...
}
value = leaveOffset;
}
break;
case OperationCode.Stind_I:
case OperationCode.Conv_U:
case OperationCode.Arglist:
case OperationCode.Ceq:
case OperationCode.Cgt:
case OperationCode.Cgt_Un:
case OperationCode.Clt:
case OperationCode.Clt_Un:
break;
case OperationCode.Ldftn:
case OperationCode.Ldvirtftn:
value = this.GetMethod(memReader.ReadUInt32());
break;
case OperationCode.Ldarg:
case OperationCode.Ldarga:
case OperationCode.Starg:
value = this.GetParameter(memReader.ReadUInt16());
break;
case OperationCode.Ldloc:
case OperationCode.Ldloca:
case OperationCode.Stloc:
value = this.GetLocal(memReader.ReadUInt16());
break;
case OperationCode.Localloc:
value = PointerType.GetPointerType(this.PEFileToObjectModel.PlatformType.SystemVoid, this.PEFileToObjectModel.InternFactory);
break;
case OperationCode.Endfilter:
break;
case OperationCode.Unaligned_:
value = memReader.ReadByte();
break;
case OperationCode.Volatile_:
case OperationCode.Tail_:
break;
case OperationCode.Initobj:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Constrained_:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Cpblk:
case OperationCode.Initblk:
break;
case OperationCode.No_:
value = (OperationCheckFlags)memReader.ReadByte();
break;
case OperationCode.Rethrow:
break;
case OperationCode.Sizeof:
value = this.GetType(memReader.ReadUInt32());
break;
case OperationCode.Refanytype:
case OperationCode.Readonly_:
break;
default:
this.PEFileToObjectModel.PEFileReader.ErrorContainer.AddILError(this.MethodDefinition, offset, MetadataReaderErrorKind.UnknownILInstruction);
break;
}
instrList[instructionNumber++] = new CilInstruction(cilOpCode, document, offset, value);
}
this.MethodBody.SetCilInstructions(instrList);
return true;
}