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/Triple.h" 14 #include "llvm/IR/CallingConv.h" 15 #include "llvm/MC/MCRegisterInfo.h" 16 17 namespace llvm { 18 19 template <typename T> class ArrayRef; 20 class MCTargetOptions; 21 class StringRef; 22 class TargetRegisterClass; 23 24 class MipsABIInfo { 25 public: 26 enum class ABI { Unknown, O32, N32, N64 }; 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 computeTargetABI(const Triple &TT, StringRef CPU, 39 const MCTargetOptions &Options); 40 41 bool IsKnown() const { return ThisABI != ABI::Unknown; } 42 bool IsO32() const { return ThisABI == ABI::O32; } 43 bool IsN32() const { return ThisABI == ABI::N32; } 44 bool IsN64() const { return ThisABI == ABI::N64; } 45 ABI GetEnumValue() const { return ThisABI; } 46 47 /// The registers to use for byval arguments. 48 ArrayRef<MCPhysReg> GetByValArgRegs() const; 49 50 /// The registers to use for the variable argument list. 51 ArrayRef<MCPhysReg> GetVarArgRegs() const; 52 53 /// Obtain the size of the area allocated by the callee for arguments. 54 /// CallingConv::FastCall affects the value for O32. 55 unsigned GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const; 56 57 /// Ordering of ABI's 58 /// MipsGenSubtargetInfo.inc will use this to resolve conflicts when given 59 /// multiple ABI options. 60 bool operator<(const MipsABIInfo Other) const { 61 return ThisABI < Other.GetEnumValue(); 62 } 63 64 unsigned GetStackPtr() const; 65 unsigned GetFramePtr() const; 66 unsigned GetBasePtr() const; 67 unsigned GetGlobalPtr() const; 68 unsigned GetNullPtr() const; 69 unsigned GetZeroReg() const; 70 unsigned GetPtrAdduOp() const; 71 unsigned GetPtrAddiuOp() const; 72 unsigned GetPtrSubuOp() const; 73 unsigned GetPtrAndOp() const; 74 unsigned GetGPRMoveOp() const; 75 inline bool ArePtrs64bit() const { return IsN64(); } 76 inline bool AreGprs64bit() const { return IsN32() || IsN64(); } 77 78 unsigned GetEhDataReg(unsigned I) const; 79 }; 80 } 81 82 #endif 83
