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Fix some copy paste errors. Update add/sub emu code

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This commit is contained in:
de4dot 2011-10-17 09:06:46 +02:00
parent d34184f811
commit 778bc7e940
2 changed files with 45 additions and 41 deletions
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20
blocks/cflow/Int32Value.cs
View File

@ -190,6 +190,8 @@ namespace de4dot.blocks.cflow {
public static Int32Value Add(Int32Value a, Int32Value b) {
if (a.allBitsValid() && b.allBitsValid())
return new Int32Value(a.value + b.value);
if (ReferenceEquals(a, b))
return new Int32Value(a.value << 1, (a.validMask << 1) | 1);
return createUnknown();
}
@ -341,7 +343,7 @@ namespace de4dot.blocks.cflow {
switch (b) {
case Bool3.False: return new Int32Value(0);
case Bool3.True: return new Int32Value(1);
default: return createUnknown();
default: return createUnknownBool();
}
}
@ -409,9 +411,9 @@ namespace de4dot.blocks.cflow {
if (a.allBitsValid() && b.allBitsValid())
return a.value >= b.value ? Bool3.True : Bool3.False;
if (a.hasValue(int.MaxValue))
return Bool3.False; // max >= x => true
return Bool3.True; // max >= x => true
if (b.hasValue(int.MinValue))
return Bool3.False; // x >= min => true
return Bool3.True; // x >= min => true
return Bool3.Unknown;
}
@ -419,9 +421,9 @@ namespace de4dot.blocks.cflow {
if (a.allBitsValid() && b.allBitsValid())
return (uint)a.value >= (uint)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(uint.MaxValue))
return Bool3.False; // max >= x => true
return Bool3.True; // max >= x => true
if (b.hasValue(uint.MinValue))
return Bool3.False; // x >= min => true
return Bool3.True; // x >= min => true
return Bool3.Unknown;
}
@ -429,9 +431,9 @@ namespace de4dot.blocks.cflow {
if (a.allBitsValid() && b.allBitsValid())
return a.value <= b.value ? Bool3.True : Bool3.False;
if (a.hasValue(int.MinValue))
return Bool3.False; // min <= x => true
return Bool3.True; // min <= x => true
if (b.hasValue(int.MaxValue))
return Bool3.False; // x <= max => true
return Bool3.True; // x <= max => true
return Bool3.Unknown;
}
@ -439,9 +441,9 @@ namespace de4dot.blocks.cflow {
if (a.allBitsValid() && b.allBitsValid())
return (uint)a.value <= (uint)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(uint.MinValue))
return Bool3.False; // min <= x => true
return Bool3.True; // min <= x => true
if (b.hasValue(uint.MaxValue))
return Bool3.False; // x <= max => true
return Bool3.True; // x <= max => true
return Bool3.Unknown;
}

66
blocks/cflow/Int64Value.cs
View File

@ -105,6 +105,8 @@ namespace de4dot.blocks.cflow {
public static Int64Value Add(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return new Int64Value(a.value + b.value);
if (ReferenceEquals(a, b))
return new Int64Value(a.value << 1, (a.validMask << 1) | 1);
return createUnknown();
}
@ -112,7 +114,7 @@ namespace de4dot.blocks.cflow {
if (a.allBitsValid() && b.allBitsValid())
return new Int64Value(a.value - b.value);
if (ReferenceEquals(a, b))
return new Int32Value(0);
return new Int64Value(0);
return createUnknown();
}
@ -145,7 +147,7 @@ namespace de4dot.blocks.cflow {
public static Int64Value Div_Un(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid()) {
try {
return new Int64Value((int)((uint)a.value / (uint)b.value));
return new Int64Value((long)((ulong)a.value / (ulong)b.value));
}
catch (ArithmeticException) {
return createUnknown();
@ -173,7 +175,7 @@ namespace de4dot.blocks.cflow {
public static Int64Value Rem_Un(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid()) {
try {
return new Int64Value((int)((uint)a.value % (uint)b.value));
return new Int64Value((long)((ulong)a.value % (ulong)b.value));
}
catch (ArithmeticException) {
return createUnknown();
@ -256,7 +258,7 @@ namespace de4dot.blocks.cflow {
switch (b) {
case Bool3.False: return new Int32Value(0);
case Bool3.True: return new Int32Value(1);
default: return Int32Value.createUnknown();
default: return Int32Value.createUnknownBool();
}
}
@ -303,19 +305,19 @@ namespace de4dot.blocks.cflow {
public static Bool3 compareGt(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return a.value > b.value ? Bool3.True : Bool3.False;
if (a.hasValue(int.MinValue))
if (a.hasValue(long.MinValue))
return Bool3.False; // min > x => false
if (b.hasValue(int.MaxValue))
if (b.hasValue(long.MaxValue))
return Bool3.False; // x > max => false
return Bool3.Unknown;
}
public static Bool3 compareGt_Un(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return (uint)a.value > (uint)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(uint.MinValue))
return (ulong)a.value > (ulong)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(ulong.MinValue))
return Bool3.False; // min > x => false
if (b.hasValue(uint.MaxValue))
if (b.hasValue(ulong.MaxValue))
return Bool3.False; // x > max => false
return Bool3.Unknown;
}
@ -323,59 +325,59 @@ namespace de4dot.blocks.cflow {
public static Bool3 compareGe(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return a.value >= b.value ? Bool3.True : Bool3.False;
if (a.hasValue(int.MaxValue))
return Bool3.False; // max >= x => true
if (b.hasValue(int.MinValue))
return Bool3.False; // x >= min => true
if (a.hasValue(long.MaxValue))
return Bool3.True; // max >= x => true
if (b.hasValue(long.MinValue))
return Bool3.True; // x >= min => true
return Bool3.Unknown;
}
public static Bool3 compareGe_Un(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return (uint)a.value >= (uint)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(uint.MaxValue))
return Bool3.False; // max >= x => true
if (b.hasValue(uint.MinValue))
return Bool3.False; // x >= min => true
return (ulong)a.value >= (ulong)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(ulong.MaxValue))
return Bool3.True; // max >= x => true
if (b.hasValue(ulong.MinValue))
return Bool3.True; // x >= min => true
return Bool3.Unknown;
}
public static Bool3 compareLe(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return a.value <= b.value ? Bool3.True : Bool3.False;
if (a.hasValue(int.MinValue))
return Bool3.False; // min <= x => true
if (b.hasValue(int.MaxValue))
return Bool3.False; // x <= max => true
if (a.hasValue(long.MinValue))
return Bool3.True; // min <= x => true
if (b.hasValue(long.MaxValue))
return Bool3.True; // x <= max => true
return Bool3.Unknown;
}
public static Bool3 compareLe_Un(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return (uint)a.value <= (uint)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(uint.MinValue))
return Bool3.False; // min <= x => true
if (b.hasValue(uint.MaxValue))
return Bool3.False; // x <= max => true
return (ulong)a.value <= (ulong)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(ulong.MinValue))
return Bool3.True; // min <= x => true
if (b.hasValue(ulong.MaxValue))
return Bool3.True; // x <= max => true
return Bool3.Unknown;
}
public static Bool3 compareLt(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return a.value < b.value ? Bool3.True : Bool3.False;
if (a.hasValue(int.MaxValue))
if (a.hasValue(long.MaxValue))
return Bool3.False; // max < x => false
if (b.hasValue(int.MinValue))
if (b.hasValue(long.MinValue))
return Bool3.False; // x < min => false
return Bool3.Unknown;
}
public static Bool3 compareLt_Un(Int64Value a, Int64Value b) {
if (a.allBitsValid() && b.allBitsValid())
return (uint)a.value < (uint)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(uint.MaxValue))
return (ulong)a.value < (ulong)b.value ? Bool3.True : Bool3.False;
if (a.hasValue(ulong.MaxValue))
return Bool3.False; // max < x => false
if (b.hasValue(uint.MinValue))
if (b.hasValue(ulong.MinValue))
return Bool3.False; // x < min => false
return Bool3.Unknown;
}