public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
// apparently, Roslyn changed something to the output. We now have to figure out where to jump to.
if (aOpCode.CurrentExceptionRegion.Kind.HasFlag(ExceptionRegionKind.Finally) &&
aOpCode.CurrentExceptionRegion.HandlerOffset > aOpCode.Position)
{
XS.Set(aMethod.MethodBase.GetFullName() + "_" + "LeaveAddress_" + aOpCode.CurrentExceptionRegion.HandlerOffset.ToString("X2"), Assembler.CurrentIlLabel + "." + (Assembler.AsmIlIdx + 2).ToString("X2"), destinationIsIndirect: true, size: RegisterSize.Int32);
XS.Jump(AppAssembler.TmpPosLabel(aMethod, aOpCode.CurrentExceptionRegion.HandlerOffset));
}
XS.Jump(AppAssembler.TmpBranchLabel(aMethod, aOpCode));
}
public override void Execute(MethodInfo aMethod, ILOpCode aOpCode)
{
// apparently, Roslyn changed something to the output. We now have to figure out where to jump to.
if (aOpCode.CurrentExceptionHandler.Flags.HasFlag(ExceptionHandlingClauseOptions.Finally) &&
aOpCode.CurrentExceptionHandler.HandlerOffset > aOpCode.Position)
{
new CPUx86.Jump {
DestinationLabel = AppAssembler.TmpPosLabel(aMethod, aOpCode.CurrentExceptionHandler.HandlerOffset)
};
}
else
{
new CPUx86.Jump {
DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
}
public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
string jumpTarget = AppAssembler.TmpBranchLabel(aMethod, aOpCode);
// apparently, Roslyn changed something to the output. We now have to figure out where to jump to.
if (aOpCode.CurrentExceptionRegion.Kind.HasFlag(ExceptionRegionKind.Finally) &&
aOpCode.CurrentExceptionRegion.HandlerOffset > aOpCode.Position)
{
string destination = $"{aMethod.MethodBase.GetFullName()}_LeaveAddress_{aOpCode.CurrentExceptionRegion.HandlerOffset:X2}";
string source = AppAssembler.TmpBranchLabel(aMethod, aOpCode);
XS.Set(destination, source, destinationIsIndirect: true, size: RegisterSize.Int32);
XS.Jump(AppAssembler.TmpPosLabel(aMethod, aOpCode.CurrentExceptionRegion.HandlerOffset));
}
else
{
XS.Jump(jumpTarget);
}
}
public override void Execute(MethodInfo aMethod, ILOpCode aOpCode)
{
new CPUx86.Jump {
DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
XS.Jump(AppAssembler.TmpBranchLabel(aMethod, aOpCode));
//new CPU.Jump { DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode) };
}
public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
var xIsSingleCompare = true;
switch (aOpCode.OpCode)
{
case ILOpCode.Code.Beq:
case ILOpCode.Code.Bge:
case ILOpCode.Code.Bgt:
case ILOpCode.Code.Bge_Un:
case ILOpCode.Code.Bgt_Un:
case ILOpCode.Code.Ble:
case ILOpCode.Code.Ble_Un:
case ILOpCode.Code.Bne_Un:
case ILOpCode.Code.Blt:
case ILOpCode.Code.Blt_Un:
xIsSingleCompare = false;
break;
}
var xStackContent = aOpCode.StackPopTypes[0];
var xStackContentSize = SizeOfType(xStackContent);
if (xStackContentSize > 8)
{
throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: StackSize > 8 not supported");
}
CPU.ConditionalTestEnum xTestOp;
// all conditions are inverted here?
switch (aOpCode.OpCode)
{
case ILOpCode.Code.Beq:
xTestOp = CPU.ConditionalTestEnum.Zero;
break;
case ILOpCode.Code.Bge:
xTestOp = CPU.ConditionalTestEnum.GreaterThanOrEqualTo;
break;
case ILOpCode.Code.Bgt:
xTestOp = CPU.ConditionalTestEnum.GreaterThan;
break;
case ILOpCode.Code.Ble:
xTestOp = CPU.ConditionalTestEnum.LessThanOrEqualTo;
break;
case ILOpCode.Code.Blt:
xTestOp = CPU.ConditionalTestEnum.LessThan;
break;
case ILOpCode.Code.Bne_Un:
xTestOp = CPU.ConditionalTestEnum.NotEqual;
break;
case ILOpCode.Code.Bge_Un:
xTestOp = CPU.ConditionalTestEnum.AboveOrEqual;
break;
case ILOpCode.Code.Bgt_Un:
xTestOp = CPU.ConditionalTestEnum.Above;
break;
case ILOpCode.Code.Ble_Un:
xTestOp = CPU.ConditionalTestEnum.BelowOrEqual;
break;
case ILOpCode.Code.Blt_Un:
xTestOp = CPU.ConditionalTestEnum.Below;
break;
case ILOpCode.Code.Brfalse:
xTestOp = CPU.ConditionalTestEnum.Zero;
break;
case ILOpCode.Code.Brtrue:
xTestOp = CPU.ConditionalTestEnum.NotZero;
break;
default:
throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Unknown OpCode for conditional branch.");
}
if (!xIsSingleCompare)
{
if (xStackContentSize <= 4)
{
//if (xStackContent.IsFloat)
//{
// throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Comparison of floats (System.Single) is not yet supported!");
//}
//else
//{
XS.Pop(XSRegisters.EAX);
XS.Pop(XSRegisters.EBX);
XS.Compare(XSRegisters.EBX, XSRegisters.EAX);
new ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
//}
}
else
{
//if (xStackContent.IsFloat)
//{
// throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Comparison of doubles (System.Double) is not yet supported!");
//}
//else
//{
var xNoJump = GetLabel(aMethod, aOpCode) + "__NoBranch";
// value 2 EBX:EAX
XS.Pop(XSRegisters.EAX);
XS.Pop(XSRegisters.EBX);
// value 1 EDX:ECX
XS.Pop(XSRegisters.ECX);
XS.Pop(XSRegisters.EDX);
switch (xTestOp)
{
case ConditionalTestEnum.Zero: // Equal
case ConditionalTestEnum.NotEqual: // NotZero
XS.Xor(XSRegisters.EAX, XSRegisters.ECX);
new ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Xor(XSRegisters.EBX, XSRegisters.EDX);
new ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
case ConditionalTestEnum.GreaterThanOrEqualTo:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
XS.Jump(ConditionalTestEnum.LessThan, xNoJump);
new ConditionalJump {
Condition = ConditionalTestEnum.GreaterThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
XS.Jump(ConditionalTestEnum.Below, xNoJump);
break;
case ConditionalTestEnum.GreaterThan:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
XS.Jump(ConditionalTestEnum.LessThan, xNoJump);
new ConditionalJump {
Condition = ConditionalTestEnum.GreaterThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
XS.Jump(ConditionalTestEnum.BelowOrEqual, xNoJump);
break;
case ConditionalTestEnum.LessThanOrEqualTo:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
new ConditionalJump {
Condition = ConditionalTestEnum.LessThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Jump(ConditionalTestEnum.GreaterThan, xNoJump);
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
new ConditionalJump {
Condition = ConditionalTestEnum.BelowOrEqual, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
case ConditionalTestEnum.LessThan:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
new ConditionalJump {
Condition = ConditionalTestEnum.LessThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Jump(ConditionalTestEnum.GreaterThan, xNoJump);
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
new ConditionalJump {
Condition = ConditionalTestEnum.Below, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
// from here all unsigned
case ConditionalTestEnum.AboveOrEqual:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
new ConditionalJump {
Condition = ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
XS.Jump(ConditionalTestEnum.Below, xNoJump);
break;
case ConditionalTestEnum.Above:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
new ConditionalJump {
Condition = ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
XS.Jump(ConditionalTestEnum.BelowOrEqual, xNoJump);
break;
case ConditionalTestEnum.BelowOrEqual:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
new ConditionalJump {
Condition = ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Jump(ConditionalTestEnum.Below, xNoJump);
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
new ConditionalJump {
Condition = ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
case ConditionalTestEnum.Below:
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
new ConditionalJump {
Condition = ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Jump(ConditionalTestEnum.Below, xNoJump);
XS.Compare(XSRegisters.ECX, XSRegisters.EAX);
new ConditionalJump {
Condition = ConditionalTestEnum.AboveOrEqual, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
default:
throw new Exception("Unknown OpCode for conditional branch in 64-bit.");
}
XS.Label(xNoJump);
//}
}
}
else
{
//if (xStackContent.IsFloat)
//{
// throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Simple comparison of floating point numbers is not yet supported!");
//}
//else
//{
// todo: improve code clarity
if (xStackContentSize <= 4)
{
XS.Pop(XSRegisters.EAX);
if (xTestOp == ConditionalTestEnum.Zero)
{
XS.Compare(XSRegisters.EAX, 0);
new ConditionalJump {
Condition = ConditionalTestEnum.Equal, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
else if (xTestOp == ConditionalTestEnum.NotZero)
{
XS.Compare(XSRegisters.EAX, 0);
new ConditionalJump {
Condition = ConditionalTestEnum.NotEqual, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
else
{
throw new NotSupportedException("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Situation not supported yet! (In the Simple Comparison)");
}
}
else
{
if (TypeIsReferenceType(xStackContent))
{
XS.Add(XSRegisters.ESP, 4);
XS.Pop(XSRegisters.EAX);
}
else
{
XS.Pop(XSRegisters.EAX);
XS.Pop(XSRegisters.EBX);
}
switch (xTestOp)
{
case ConditionalTestEnum.Zero: // Equal
case ConditionalTestEnum.NotZero: // NotEqual
if (TypeIsReferenceType(xStackContent))
{
XS.Xor(XSRegisters.EAX, 0);
new ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
else
{
XS.Xor(XSRegisters.EAX, 0);
new ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
XS.Xor(XSRegisters.EBX, 0);
new ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
break;
default:
throw new NotImplementedException("Cosmos.IL2CPU.X86.IL.Branch: Simple branch " + aOpCode.OpCode + " not implemented for operand ");
}
}
}
//}
}
public override void Execute(MethodInfo aMethod, ILOpCode aOpCode)
{
var xIsSingleCompare = true;
switch (aOpCode.OpCode)
{
case ILOpCode.Code.Beq:
case ILOpCode.Code.Bge:
case ILOpCode.Code.Bgt:
case ILOpCode.Code.Bge_Un:
case ILOpCode.Code.Bgt_Un:
case ILOpCode.Code.Ble:
case ILOpCode.Code.Ble_Un:
case ILOpCode.Code.Bne_Un:
case ILOpCode.Code.Blt:
case ILOpCode.Code.Blt_Un:
xIsSingleCompare = false;
break;
}
var xStackContent = aOpCode.StackPopTypes[0];
var xStackContentSize = SizeOfType(xStackContent);
if (xStackContentSize > 8)
{
throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: StackSize > 8 not supported");
}
CPU.ConditionalTestEnum xTestOp;
// all conditions are inverted here?
switch (aOpCode.OpCode)
{
case ILOpCode.Code.Beq:
xTestOp = CPU.ConditionalTestEnum.Zero;
break;
case ILOpCode.Code.Bge:
xTestOp = CPU.ConditionalTestEnum.GreaterThanOrEqualTo;
break;
case ILOpCode.Code.Bgt:
xTestOp = CPU.ConditionalTestEnum.GreaterThan;
break;
case ILOpCode.Code.Ble:
xTestOp = CPU.ConditionalTestEnum.LessThanOrEqualTo;
break;
case ILOpCode.Code.Blt:
xTestOp = CPU.ConditionalTestEnum.LessThan;
break;
case ILOpCode.Code.Bne_Un:
xTestOp = CPU.ConditionalTestEnum.NotEqual;
break;
case ILOpCode.Code.Bge_Un:
xTestOp = CPU.ConditionalTestEnum.AboveOrEqual;
break;
case ILOpCode.Code.Bgt_Un:
xTestOp = CPU.ConditionalTestEnum.Above;
break;
case ILOpCode.Code.Ble_Un:
xTestOp = CPU.ConditionalTestEnum.BelowOrEqual;
break;
case ILOpCode.Code.Blt_Un:
xTestOp = CPU.ConditionalTestEnum.Below;
break;
case ILOpCode.Code.Brfalse:
xTestOp = CPU.ConditionalTestEnum.Zero;
break;
case ILOpCode.Code.Brtrue:
xTestOp = CPU.ConditionalTestEnum.NotZero;
break;
default:
throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Unknown OpCode for conditional branch.");
}
if (!xIsSingleCompare)
{
if (xStackContentSize <= 4)
{
//if (xStackContent.IsFloat)
//{
// throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Comparison of floats (System.Single) is not yet supported!");
//}
//else
//{
new CPU.Pop {
DestinationReg = CPU.Registers.EAX
};
new CPU.Pop {
DestinationReg = CPU.Registers.EBX
};
new CPU.Compare {
DestinationReg = CPU.Registers.EBX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
//}
}
else
{
//if (xStackContent.IsFloat)
//{
// throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Comparison of doubles (System.Double) is not yet supported!");
//}
//else
//{
var xNoJump = GetLabel(aMethod, aOpCode) + "__NoBranch";
// value 2 EBX:EAX
new CPU.Pop {
DestinationReg = CPU.Registers.EAX
};
new CPU.Pop {
DestinationReg = CPU.Registers.EBX
};
// value 1 EDX:ECX
new CPU.Pop {
DestinationReg = CPU.Registers.ECX
};
new CPU.Pop {
DestinationReg = CPU.Registers.EDX
};
switch (xTestOp)
{
case ConditionalTestEnum.Zero: // Equal
case ConditionalTestEnum.NotEqual: // NotZero
new CPU.Xor {
DestinationReg = CPU.Registers.EAX, SourceReg = CPU.Registers.ECX
};
new CPU.ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.Xor {
DestinationReg = CPU.Registers.EBX, SourceReg = CPU.Registers.EDX
};
new CPU.ConditionalJump {
Condition = xTestOp, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
case ConditionalTestEnum.GreaterThanOrEqualTo:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.LessThan, DestinationLabel = xNoJump
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.GreaterThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Below, DestinationLabel = xNoJump
};
break;
case ConditionalTestEnum.GreaterThan:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.LessThan, DestinationLabel = xNoJump
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.GreaterThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.BelowOrEqual, DestinationLabel = xNoJump
};
break;
case ConditionalTestEnum.LessThanOrEqualTo:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.LessThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.GreaterThan, DestinationLabel = xNoJump
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.BelowOrEqual, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
case ConditionalTestEnum.LessThan:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.LessThan, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.GreaterThan, DestinationLabel = xNoJump
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Below, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
// from here all unsigned
case ConditionalTestEnum.AboveOrEqual:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Below, DestinationLabel = xNoJump
};
break;
case ConditionalTestEnum.Above:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.BelowOrEqual, DestinationLabel = xNoJump
};
break;
case ConditionalTestEnum.BelowOrEqual:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Below, DestinationLabel = xNoJump
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
case ConditionalTestEnum.Below:
new CPU.Compare {
DestinationReg = CPU.Registers.EDX, SourceReg = CPU.Registers.EBX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Above, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.Below, DestinationLabel = xNoJump
};
new CPU.Compare {
DestinationReg = CPU.Registers.ECX, SourceReg = CPU.Registers.EAX
};
new CPU.ConditionalJump {
Condition = CPU.ConditionalTestEnum.AboveOrEqual, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
break;
default:
throw new Exception("Unknown OpCode for conditional branch in 64-bit.");
}
new Label(xNoJump);
//}
}
}
else
{
//if (xStackContent.IsFloat)
//{
// throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Simple comparison of floating point numbers is not yet supported!");
//}
//else
//{
// todo: improve code clarity
if (xStackContentSize > 4)
{
throw new Exception("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Simple branches are not yet supported on operands > 4 bytes!");
}
new CPU.Pop {
DestinationReg = CPU.Registers.EAX
};
if (xTestOp == ConditionalTestEnum.Zero)
{
new CPU.Compare {
DestinationReg = CPU.Registers.EAX, SourceValue = 0
};
new CPU.ConditionalJump {
Condition = ConditionalTestEnum.Equal, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
else if (xTestOp == ConditionalTestEnum.NotZero)
{
new CPU.Compare {
DestinationReg = CPU.Registers.EAX, SourceValue = 0
};
new CPU.ConditionalJump {
Condition = ConditionalTestEnum.NotEqual, DestinationLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode)
};
}
else
{
throw new NotSupportedException("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: Situation not supported yet! (In the Simple Comparison)");
}
}
//}
}
public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
XS.Jump(AppAssembler.TmpBranchLabel(aMethod, aOpCode));
}
public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
var xOp = aOpCode.OpCode;
var xBranchLabel = AppAssembler.TmpBranchLabel(aMethod, aOpCode);
var xStackType = aOpCode.StackPopTypes[0];
var xSize = SizeOfType(xStackType);
var xIsFloat = TypeIsFloat(xStackType);
if (xOp == ILOpCode.Code.Brtrue ||
xOp == ILOpCode.Code.Brfalse)
{
if (xIsFloat)
{
throw new NotSupportedException();
}
if (xSize <= 4)
{
XS.Pop(EAX);
XS.Compare(EAX, 0);
XS.Jump(xOp == ILOpCode.Code.Brtrue ? ConditionalTestEnum.NotEqual : ConditionalTestEnum.Equal, xBranchLabel);
}
else if (xSize <= 8)
{
XS.Pop(EAX);
XS.Pop(EBX);
if (xOp == ILOpCode.Code.Brtrue)
{
XS.Compare(EAX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xBranchLabel);
XS.Compare(EBX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xBranchLabel);
}
else
{
var xEndLabel = GetLabel(aMethod, aOpCode) + ".End";
XS.Compare(EAX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xEndLabel);
XS.Compare(EBX, 0);
XS.Jump(ConditionalTestEnum.Equal, xBranchLabel);
XS.Label(xEndLabel);
}
}
else if (xSize > 8)
{
throw new NotImplementedException("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: StackSize > 8 not supported");
}
return;
}
if (xIsFloat)
{
var xTestOp = SseCompareOPs[xOp];
var xIsUnordered = xOp == ILOpCode.Code.Bge_Un ||
xOp == ILOpCode.Code.Bgt_Un ||
xOp == ILOpCode.Code.Ble_Un ||
xOp == ILOpCode.Code.Blt_Un ||
xOp == ILOpCode.Code.Bne_Un;
if (xSize <= 4)
{
XS.SSE.MoveSS(XMM0, ESP, sourceIsIndirect: true);
XS.Add(ESP, 4);
XS.SSE.MoveSS(XMM1, ESP, sourceIsIndirect: true);
XS.Add(ESP, 4);
if (xIsUnordered)
{
XS.SSE.MoveSS(XMM2, XMM1);
XS.SSE.CompareSS(XMM2, XMM0, ComparePseudoOpcodes.Unordered);
XS.MoveD(EAX, XMM2);
XS.Compare(EAX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xBranchLabel);
}
XS.SSE.CompareSS(XMM1, XMM0, xTestOp);
XS.MoveD(EAX, XMM1);
XS.Compare(EAX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xBranchLabel);
}
else if (xSize <= 8)
{
XS.SSE2.MoveSD(XMM0, ESP, sourceIsIndirect: true);
XS.Add(ESP, 8);
XS.SSE2.MoveSD(XMM1, ESP, sourceIsIndirect: true);
XS.Add(ESP, 8);
if (xIsUnordered)
{
XS.SSE2.MoveSD(XMM2, XMM1);
XS.SSE2.CompareSD(XMM2, XMM0, ComparePseudoOpcodes.Unordered);
XS.MoveD(EAX, XMM2);
XS.Compare(EAX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xBranchLabel);
}
XS.SSE2.CompareSD(XMM1, XMM0, xTestOp);
XS.MoveD(EAX, XMM1);
XS.Compare(EAX, 0);
XS.Jump(ConditionalTestEnum.NotEqual, xBranchLabel);
}
}
else
{
var xTestOp = TestOPs[xOp];
if (xSize <= 4)
{
XS.Pop(EAX);
XS.Pop(EBX);
XS.Compare(EBX, EAX);
XS.Jump(xTestOp, xBranchLabel);
}
else if (xSize <= 8)
{
var xEndLabel = GetLabel(aMethod, aOpCode) + ".End";
XS.Pop(EAX);
XS.Pop(EDX);
XS.Pop(EBX);
XS.Pop(ECX);
switch (xOp)
{
case ILOpCode.Code.Beq:
case ILOpCode.Code.Bne_Un:
XS.Compare(ECX, EDX);
XS.Jump(ConditionalTestEnum.NotEqual, xOp == ILOpCode.Code.Beq ? xEndLabel : xBranchLabel);
XS.Compare(EBX, EAX);
XS.Jump(xTestOp, xBranchLabel);
break;
case ILOpCode.Code.Bge:
case ILOpCode.Code.Bgt:
XS.Compare(ECX, EDX);
XS.Jump(ConditionalTestEnum.GreaterThan, xBranchLabel);
XS.Jump(ConditionalTestEnum.NotEqual, xEndLabel);
XS.Compare(EBX, EAX);
XS.Jump(xTestOp, xBranchLabel);
break;
case ILOpCode.Code.Ble:
case ILOpCode.Code.Blt:
XS.Compare(ECX, EDX);
XS.Jump(ConditionalTestEnum.LessThan, xBranchLabel);
XS.Jump(ConditionalTestEnum.NotEqual, xEndLabel);
XS.Compare(EBX, EAX);
XS.Jump(xTestOp, xBranchLabel);
break;
case ILOpCode.Code.Bge_Un:
case ILOpCode.Code.Bgt_Un:
XS.Compare(ECX, EDX);
XS.Jump(ConditionalTestEnum.Above, xBranchLabel);
XS.Jump(ConditionalTestEnum.NotEqual, xEndLabel);
XS.Compare(EBX, EAX);
XS.Jump(xTestOp, xBranchLabel);
break;
case ILOpCode.Code.Ble_Un:
case ILOpCode.Code.Blt_Un:
XS.Compare(ECX, EDX);
XS.Jump(ConditionalTestEnum.Below, xBranchLabel);
XS.Jump(ConditionalTestEnum.NotEqual, xEndLabel);
XS.Compare(EBX, EAX);
XS.Jump(xTestOp, xBranchLabel);
break;
}
XS.Label(xEndLabel);
}
}
if (xSize > 8)
{
throw new NotImplementedException("Cosmos.IL2CPU.x86->IL->Branch.cs->Error: StackSize > 8 not supported");
}
}
