81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
//===---- MipsABIInfo.h - Information about MIPS ABI's --------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIINFO_H
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#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIINFO_H
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#include "llvm/ADT/Triple.h"
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#include "llvm/IR/CallingConv.h"
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#include "llvm/MC/MCRegisterInfo.h"
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namespace llvm {
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template <typename T> class ArrayRef;
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class MCTargetOptions;
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class StringRef;
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class MipsABIInfo {
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public:
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enum class ABI { Unknown, O32, N32, N64 };
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protected:
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ABI ThisABI;
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public:
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MipsABIInfo(ABI ThisABI) : ThisABI(ThisABI) {}
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static MipsABIInfo Unknown() { return MipsABIInfo(ABI::Unknown); }
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static MipsABIInfo O32() { return MipsABIInfo(ABI::O32); }
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static MipsABIInfo N32() { return MipsABIInfo(ABI::N32); }
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static MipsABIInfo N64() { return MipsABIInfo(ABI::N64); }
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static MipsABIInfo computeTargetABI(const Triple &TT, StringRef CPU,
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const MCTargetOptions &Options);
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bool IsKnown() const { return ThisABI != ABI::Unknown; }
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bool IsO32() const { return ThisABI == ABI::O32; }
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bool IsN32() const { return ThisABI == ABI::N32; }
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bool IsN64() const { return ThisABI == ABI::N64; }
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ABI GetEnumValue() const { return ThisABI; }
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/// The registers to use for byval arguments.
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ArrayRef<MCPhysReg> GetByValArgRegs() const;
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/// The registers to use for the variable argument list.
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ArrayRef<MCPhysReg> GetVarArgRegs() const;
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/// Obtain the size of the area allocated by the callee for arguments.
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/// CallingConv::FastCall affects the value for O32.
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unsigned GetCalleeAllocdArgSizeInBytes(CallingConv::ID CC) const;
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/// Ordering of ABI's
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/// MipsGenSubtargetInfo.inc will use this to resolve conflicts when given
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/// multiple ABI options.
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bool operator<(const MipsABIInfo Other) const {
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return ThisABI < Other.GetEnumValue();
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}
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unsigned GetStackPtr() const;
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unsigned GetFramePtr() const;
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unsigned GetBasePtr() const;
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unsigned GetGlobalPtr() const;
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unsigned GetNullPtr() const;
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unsigned GetZeroReg() const;
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unsigned GetPtrAdduOp() const;
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unsigned GetPtrAddiuOp() const;
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unsigned GetPtrSubuOp() const;
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unsigned GetPtrAndOp() const;
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unsigned GetGPRMoveOp() const;
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inline bool ArePtrs64bit() const { return IsN64(); }
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inline bool AreGprs64bit() const { return IsN32() || IsN64(); }
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unsigned GetEhDataReg(unsigned I) const;
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};
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}
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#endif
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