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1//===---- MipsABIInfo.h - Information about MIPS ABI's --------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIINFO_H10#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIINFO_H11 12#include "llvm/IR/CallingConv.h"13#include "llvm/MC/MCRegisterInfo.h"14#include "llvm/TargetParser/Triple.h"15 16namespace llvm {17 18template <typename T> class ArrayRef;19class MCTargetOptions;20class StringRef;21 22class MipsABIInfo {23public:24 enum class ABI { Unknown, O32, N32, N64 };25 26protected:27 ABI ThisABI;28 29public:30 MipsABIInfo(ABI ThisABI) : ThisABI(ThisABI) {}31 32 static MipsABIInfo Unknown() { return MipsABIInfo(ABI::Unknown); }33 static MipsABIInfo O32() { return MipsABIInfo(ABI::O32); }34 static MipsABIInfo N32() { return MipsABIInfo(ABI::N32); }35 static MipsABIInfo N64() { return MipsABIInfo(ABI::N64); }36 static MipsABIInfo computeTargetABI(const Triple &TT, StringRef ABIName);37 38 bool IsKnown() const { return ThisABI != ABI::Unknown; }39 bool IsO32() const { return ThisABI == ABI::O32; }40 bool IsN32() const { return ThisABI == ABI::N32; }41 bool IsN64() const { return ThisABI == ABI::N64; }42 ABI GetEnumValue() const { return ThisABI; }43 44 /// The registers to use for byval arguments.45 ArrayRef<MCPhysReg> GetByValArgRegs() const;46 47 /// The registers to use for the variable argument list.48 ArrayRef<MCPhysReg> getVarArgRegs(bool isGP64bit) const;49 50 /// Obtain the size of the area allocated by the callee for arguments.51 /// CallingConv::FastCall affects the value for O32.52 unsigned GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const;53 54 /// Ordering of ABI's55 /// MipsGenSubtargetInfo.inc will use this to resolve conflicts when given56 /// multiple ABI options.57 bool operator<(const MipsABIInfo Other) const {58 return ThisABI < Other.GetEnumValue();59 }60 61 unsigned GetStackPtr() const;62 unsigned GetFramePtr() const;63 unsigned GetBasePtr() const;64 unsigned GetGlobalPtr() const;65 unsigned GetNullPtr() const;66 unsigned GetZeroReg() const;67 unsigned GetPtrAdduOp() const;68 unsigned GetPtrAddiuOp() const;69 unsigned GetPtrSubuOp() const;70 unsigned GetPtrAndOp() const;71 unsigned GetGPRMoveOp() const;72 inline bool ArePtrs64bit() const { return IsN64(); }73 inline bool AreGprs64bit() const { return IsN32() || IsN64(); }74 75 unsigned GetEhDataReg(unsigned I) const;76};77}78 79#endif80