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 23 class MipsABIInfo { 24 public: 25 enum class ABI { Unknown, O32, N32, N64, EABI }; 26 27 protected: 28 ABI ThisABI; 29 30 public: 31 MipsABIInfo(ABI ThisABI) : ThisABI(ThisABI) {} 32 33 static MipsABIInfo Unknown() { return MipsABIInfo(ABI::Unknown); } 34 static MipsABIInfo O32() { return MipsABIInfo(ABI::O32); } 35 static MipsABIInfo N32() { return MipsABIInfo(ABI::N32); } 36 static MipsABIInfo N64() { return MipsABIInfo(ABI::N64); } 37 static MipsABIInfo EABI() { return MipsABIInfo(ABI::EABI); } 38 static MipsABIInfo computeTargetABI(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 bool IsEABI() const { return ThisABI == ABI::EABI; } 46 ABI GetEnumValue() const { return ThisABI; } 47 48 /// The registers to use for byval arguments. 49 const ArrayRef<MCPhysReg> GetByValArgRegs() const; 50 51 /// The registers to use for the variable argument list. 52 const ArrayRef<MCPhysReg> GetVarArgRegs() const; 53 54 /// Obtain the size of the area allocated by the callee for arguments. 55 /// CallingConv::FastCall affects the value for O32. 56 unsigned GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const; 57 58 /// Ordering of ABI's 59 /// MipsGenSubtargetInfo.inc will use this to resolve conflicts when given 60 /// multiple ABI options. 61 bool operator<(const MipsABIInfo Other) const { 62 return ThisABI < Other.GetEnumValue(); 63 } 64 }; 65 } 66 67 #endif 68
