bool IsGRegisterFree(int Index, x86RegisterMask Mask, bool EnableParamLocs = false)
{
if (!GRegisters.IsFree(Index, Mask))
{
return(false);
}
if (!FSData.DisabledLocations.GRegisters.IsFree(Index, Mask))
{
return(false);
}
if (!EnableParamLocs)
{
var P = ContainerData.UsedByParams;
if (P.GRegisters.Initialized && !P.GRegisters.IsFree(Index, Mask))
{
return(false);
}
}
return(true);
}
public x86DataLocation GetAllocated(x86DataLocationType Type, int Size, int Align = -1)
{
if ((Type & x86DataLocationType.General) != 0)
{
var Sequence = x86CallConv.AllocationSequence.GRegisters;
var Mask = new x86RegisterMask(Size);
var HighMask = new x86RegisterMask(1, Size);
if ((Type & x86DataLocationType.OneByte) == 0)
{
for (var i = 0; i < Sequence.Length; i++)
{
var Reg = Sequence[i];
if (Arch.IsGRegisterExists(Reg, Mask) && !Arch.IsGRegisterExists(Reg, 0, 1) && !GRegisters.IsFree(Reg, Mask))
{
return(new x86GRegLocation(Arch, Reg, Mask));
}
}
for (var i = 0; i < Sequence.Length; i++)
{
var Reg = Sequence[i];
if (Arch.IsGRegisterExists(Reg, Mask) && !GRegisters.IsFree(Reg, Mask))
{
return(new x86GRegLocation(Arch, Reg, Mask));
}
}
}
else
{
for (var i = 0; i < Sequence.Length; i++)
{
var Reg = Sequence[i];
if (Arch.IsGRegisterExists(Reg, Mask) && Arch.IsGRegisterExists(Reg, 0, 1) && !GRegisters.IsFree(Reg, Mask))
{
return(new x86GRegLocation(Arch, Reg, Mask));
}
}
}
}
if ((Type & x86DataLocationType.SSEReg) != 0)
{
var Sequence = x86CallConv.AllocationSequence.SSERegisters;
for (var i = 0; i < Sequence.Length; i++)
{
var Reg = Sequence[i];
if (Reg < Arch.RegCount && !SSERegisters.IsFree(Reg))
{
return(new x86SSERegLocation(Arch, Reg, Size));
}
}
}
if ((Type & x86DataLocationType.Memory) != 0)
{
StackOffset = DataStoring.AlignWithDecrease(StackOffset - Size, Align);
return(new x86StackLocation(Arch, FuncScope, StackOffset, Size, false));
}
return(null);
}