1 //===---- MipsABIInfo.h - Information about MIPS ABI's --------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIINFO_H 11 #define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIINFO_H 12 13 #include "llvm/ADT/ArrayRef.h" 14 #include "llvm/ADT/Triple.h" 15 #include "llvm/IR/CallingConv.h" 16 #include "llvm/MC/MCRegisterInfo.h" 17 18 namespace llvm { 19 20 class MCTargetOptions; 21 class StringRef; 22 class TargetRegisterClass; 23 24 class MipsABIInfo { 25 public: 26 enum class ABI { Unknown, O32, N32, N64, EABI }; 27 28 protected: 29 ABI ThisABI; 30 31 public: 32 MipsABIInfo(ABI ThisABI) : ThisABI(ThisABI) {} 33 34 static MipsABIInfo Unknown() { return MipsABIInfo(ABI::Unknown); } 35 static MipsABIInfo O32() { return MipsABIInfo(ABI::O32); } 36 static MipsABIInfo N32() { return MipsABIInfo(ABI::N32); } 37 static MipsABIInfo N64() { return MipsABIInfo(ABI::N64); } 38 static MipsABIInfo EABI() { return MipsABIInfo(ABI::EABI); } 39 static MipsABIInfo computeTargetABI(const Triple &TT, StringRef CPU, 40 const MCTargetOptions &Options); 41 42 bool IsKnown() const { return ThisABI != ABI::Unknown; } 43 bool IsO32() const { return ThisABI == ABI::O32; } 44 bool IsN32() const { return ThisABI == ABI::N32; } 45 bool IsN64() const { return ThisABI == ABI::N64; } 46 bool IsEABI() const { return ThisABI == ABI::EABI; } 47 ABI GetEnumValue() const { return ThisABI; } 48 49 /// The registers to use for byval arguments. 50 ArrayRef<MCPhysReg> GetByValArgRegs() const; 51 52 /// The registers to use for the variable argument list. 53 ArrayRef<MCPhysReg> GetVarArgRegs() const; 54 55 /// Obtain the size of the area allocated by the callee for arguments. 56 /// CallingConv::FastCall affects the value for O32. 57 unsigned GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const; 58 59 /// Ordering of ABI's 60 /// MipsGenSubtargetInfo.inc will use this to resolve conflicts when given 61 /// multiple ABI options. 62 bool operator<(const MipsABIInfo Other) const { 63 return ThisABI < Other.GetEnumValue(); 64 } 65 66 unsigned GetStackPtr() const; 67 unsigned GetFramePtr() const; 68 unsigned GetBasePtr() const; 69 unsigned GetNullPtr() const; 70 unsigned GetZeroReg() const; 71 unsigned GetPtrAdduOp() const; 72 unsigned GetPtrAddiuOp() const; 73 unsigned GetGPRMoveOp() const; 74 inline bool ArePtrs64bit() const { return IsN64(); } 75 inline bool AreGprs64bit() const { return IsN32() || IsN64(); } 76 77 unsigned GetEhDataReg(unsigned I) const; 78 }; 79 } 80 81 #endif 82
