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Real8Value can now also be "invalid", like Int{32|64}Value

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This commit is contained in:
de4dot 2013-10-16 10:13:19 +02:00
parent 156bc4c7ee
commit 52111f7e39
4 changed files with 83 additions and 1 deletions
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14
de4dot.blocks/cflow/InstructionEmulator.cs
View File

@ -141,7 +141,7 @@ namespace de4dot.blocks.cflow {
case ElementType.R4:
if (value.IsReal8())
return new Real8Value((float)((Real8Value)value).Value);
return ((Real8Value)value).ToSingle();
return new UnknownValue();
case ElementType.R8:
@ -870,6 +870,8 @@ namespace de4dot.blocks.cflow {
valueStack.Push(Int32Value.Add_Ovf((Int32Value)val1, (Int32Value)val2));
else if (val1.IsInt64() && val2.IsInt64())
valueStack.Push(Int64Value.Add_Ovf((Int64Value)val1, (Int64Value)val2));
else if (val1.IsReal8() && val2.IsReal8())
valueStack.Push(Real8Value.Add_Ovf((Real8Value)val1, (Real8Value)val2));
else
valueStack.PushUnknown();
}
@ -882,6 +884,8 @@ namespace de4dot.blocks.cflow {
valueStack.Push(Int32Value.Add_Ovf_Un((Int32Value)val1, (Int32Value)val2));
else if (val1.IsInt64() && val2.IsInt64())
valueStack.Push(Int64Value.Add_Ovf_Un((Int64Value)val1, (Int64Value)val2));
else if (val1.IsReal8() && val2.IsReal8())
valueStack.Push(Real8Value.Add_Ovf_Un((Real8Value)val1, (Real8Value)val2));
else
valueStack.PushUnknown();
}
@ -894,6 +898,8 @@ namespace de4dot.blocks.cflow {
valueStack.Push(Int32Value.Sub_Ovf((Int32Value)val1, (Int32Value)val2));
else if (val1.IsInt64() && val2.IsInt64())
valueStack.Push(Int64Value.Sub_Ovf((Int64Value)val1, (Int64Value)val2));
else if (val1.IsReal8() && val2.IsReal8())
valueStack.Push(Real8Value.Sub_Ovf((Real8Value)val1, (Real8Value)val2));
else
valueStack.PushUnknown();
}
@ -906,6 +912,8 @@ namespace de4dot.blocks.cflow {
valueStack.Push(Int32Value.Sub_Ovf_Un((Int32Value)val1, (Int32Value)val2));
else if (val1.IsInt64() && val2.IsInt64())
valueStack.Push(Int64Value.Sub_Ovf_Un((Int64Value)val1, (Int64Value)val2));
else if (val1.IsReal8() && val2.IsReal8())
valueStack.Push(Real8Value.Sub_Ovf_Un((Real8Value)val1, (Real8Value)val2));
else
valueStack.PushUnknown();
}
@ -918,6 +926,8 @@ namespace de4dot.blocks.cflow {
valueStack.Push(Int32Value.Mul_Ovf((Int32Value)val1, (Int32Value)val2));
else if (val1.IsInt64() && val2.IsInt64())
valueStack.Push(Int64Value.Mul_Ovf((Int64Value)val1, (Int64Value)val2));
else if (val1.IsReal8() && val2.IsReal8())
valueStack.Push(Real8Value.Mul_Ovf((Real8Value)val1, (Real8Value)val2));
else
valueStack.PushUnknown();
}
@ -930,6 +940,8 @@ namespace de4dot.blocks.cflow {
valueStack.Push(Int32Value.Mul_Ovf_Un((Int32Value)val1, (Int32Value)val2));
else if (val1.IsInt64() && val2.IsInt64())
valueStack.Push(Int64Value.Mul_Ovf_Un((Int64Value)val1, (Int64Value)val2));
else if (val1.IsReal8() && val2.IsReal8())
valueStack.Push(Real8Value.Mul_Ovf_Un((Real8Value)val1, (Real8Value)val2));
else
valueStack.PushUnknown();
}

12
de4dot.blocks/cflow/Int32Value.cs
View File

@ -131,6 +131,8 @@ namespace de4dot.blocks.cflow {
}
public static Int32Value Conv_U1(Real8Value a) {
if (!a.IsValid)
return CreateUnknownUInt8();
return new Int32Value((int)(byte)a.Value);
}
@ -152,6 +154,8 @@ namespace de4dot.blocks.cflow {
}
public static Int32Value Conv_I1(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Int32Value((int)(sbyte)a.Value);
}
@ -170,6 +174,8 @@ namespace de4dot.blocks.cflow {
}
public static Int32Value Conv_U2(Real8Value a) {
if (!a.IsValid)
return CreateUnknownUInt16();
return new Int32Value((int)(ushort)a.Value);
}
@ -191,6 +197,8 @@ namespace de4dot.blocks.cflow {
}
public static Int32Value Conv_I2(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Int32Value((int)(short)a.Value);
}
@ -203,6 +211,8 @@ namespace de4dot.blocks.cflow {
}
public static Int32Value Conv_U4(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Int32Value((int)(uint)a.Value);
}
@ -215,6 +225,8 @@ namespace de4dot.blocks.cflow {
}
public static Int32Value Conv_I4(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Int32Value((int)a.Value);
}

4
de4dot.blocks/cflow/Int64Value.cs
View File

@ -91,6 +91,8 @@ namespace de4dot.blocks.cflow {
}
public static Int64Value Conv_U8(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Int64Value((long)(ulong)a.Value);
}
@ -109,6 +111,8 @@ namespace de4dot.blocks.cflow {
}
public static Int64Value Conv_I8(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Int64Value((long)a.Value);
}

54
de4dot.blocks/cflow/Real8Value.cs
View File

@ -20,36 +20,90 @@
namespace de4dot.blocks.cflow {
public class Real8Value : Value {
public readonly double Value;
public readonly bool IsValid;
public Real8Value(double value)
: base(ValueType.Real8) {
this.Value = value;
this.IsValid = true;
}
public Real8Value(double value, bool isValid)
: base(ValueType.Real8) {
this.Value = value;
this.IsValid = isValid;
}
public static Real8Value CreateUnknown() {
return new Real8Value(0, false);
}
public Real8Value ToSingle() {
if (!IsValid)
return CreateUnknown();
return new Real8Value((float)Value);
}
public static Real8Value Add(Real8Value a, Real8Value b) {
if (!a.IsValid || !b.IsValid)
return CreateUnknown();
return new Real8Value(a.Value + b.Value);
}
public static Real8Value Sub(Real8Value a, Real8Value b) {
if (!a.IsValid || !b.IsValid)
return CreateUnknown();
return new Real8Value(a.Value - b.Value);
}
public static Real8Value Mul(Real8Value a, Real8Value b) {
if (!a.IsValid || !b.IsValid)
return CreateUnknown();
return new Real8Value(a.Value * b.Value);
}
public static Real8Value Div(Real8Value a, Real8Value b) {
if (!a.IsValid || !b.IsValid)
return CreateUnknown();
return new Real8Value(a.Value / b.Value);
}
public static Real8Value Rem(Real8Value a, Real8Value b) {
if (!a.IsValid || !b.IsValid)
return CreateUnknown();
return new Real8Value(a.Value % b.Value);
}
public static Real8Value Neg(Real8Value a) {
if (!a.IsValid)
return CreateUnknown();
return new Real8Value(-a.Value);
}
public static Real8Value Add_Ovf(Real8Value a, Real8Value b) {
return CreateUnknown();
}
public static Real8Value Add_Ovf_Un(Real8Value a, Real8Value b) {
return CreateUnknown();
}
public static Real8Value Sub_Ovf(Real8Value a, Real8Value b) {
return CreateUnknown();
}
public static Real8Value Sub_Ovf_Un(Real8Value a, Real8Value b) {
return CreateUnknown();
}
public static Real8Value Mul_Ovf(Real8Value a, Real8Value b) {
return CreateUnknown();
}
public static Real8Value Mul_Ovf_Un(Real8Value a, Real8Value b) {
return CreateUnknown();
}
public static Int32Value Conv_Ovf_I1(Real8Value a) {
return Int32Value.CreateUnknown();
}