x86GRegLocation AllocGRegHelper(int Size, bool OneByteVariant, x86GRegisterList CantBe = new x86GRegisterList(), bool EnableParamLocs = false) { if (Size == 1) { OneByteVariant = false; } var Mask = new x86RegisterMask(Size); var HighMask = new x86RegisterMask(1, 1); var Sequence = x86CallConv.AllocationSequence.GRegisters; for (var i = 0; i < Sequence.Length; i++) { var Reg = Sequence[i]; if (Arch.IsGRegisterExists(Reg, Mask) && IsGRegisterFree(Reg, Mask, EnableParamLocs)) { if (CantBe.Initialized && !CantBe.IsFree(Reg, Mask)) { continue; } if (OneByteVariant && !Arch.IsGRegisterExists(Reg, 0, 1)) { continue; } GRegisters.SetUsed(Reg, Mask); return(new x86GRegLocation(Arch, Reg, Mask)); } if (Size == 1 && Arch.IsGRegisterExists(Reg, HighMask) && IsGRegisterFree(Reg, HighMask, EnableParamLocs)) { if (CantBe.Initialized && !CantBe.IsFree(Reg, HighMask)) { continue; } GRegisters.SetUsed(Reg, HighMask); return(new x86GRegLocation(Arch, Reg, HighMask)); } } return(null); }
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); }