| //===-- M68kMachineFunctionInfo.h - M68k private data ---------*- C++ -*-=// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file declares the M68k specific subclass of MachineFunctionInfo. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_M68K_M68KMACHINEFUNCTION_H |
| #define LLVM_LIB_TARGET_M68K_M68KMACHINEFUNCTION_H |
| |
| #include "llvm/CodeGen/CallingConvLower.h" |
| #include "llvm/CodeGen/MachineFunction.h" |
| #include "llvm/Support/MachineValueType.h" |
| |
| namespace llvm { |
| |
| class M68kMachineFunctionInfo : public MachineFunctionInfo { |
| MachineFunction &MF; |
| |
| /// Non-zero if the function has base pointer and makes call to |
| /// llvm.eh.sjlj.setjmp. When non-zero, the value is a displacement from the |
| /// frame pointer to a slot where the base pointer is stashed. |
| signed char RestoreBasePointerOffset = 0; |
| |
| /// Size of the callee-saved register portion of the stack frame in bytes. |
| unsigned CalleeSavedFrameSize = 0; |
| |
| /// Number of bytes function pops on return (in addition to the space used by |
| /// the return address). Used on windows platform for stdcall & fastcall |
| /// name decoration |
| unsigned BytesToPopOnReturn = 0; |
| |
| /// FrameIndex for return slot. |
| int ReturnAddrIndex = 0; |
| |
| /// The number of bytes by which return address stack slot is moved as the |
| /// result of tail call optimization. |
| int TailCallReturnAddrDelta = 0; |
| |
| /// keeps track of the virtual register initialized for use as the global |
| /// base register. This is used for PIC in some PIC relocation models. |
| unsigned GlobalBaseReg = 0; |
| |
| /// FrameIndex for start of varargs area. |
| int VarArgsFrameIndex = 0; |
| |
| /// Keeps track of whether this function uses sequences of pushes to pass |
| /// function parameters. |
| bool HasPushSequences = false; |
| |
| /// Some subtargets require that sret lowering includes |
| /// returning the value of the returned struct in a register. This field |
| /// holds the virtual register into which the sret argument is passed. |
| unsigned SRetReturnReg = 0; |
| |
| /// A list of virtual and physical registers that must be forwarded to every |
| /// musttail call. |
| SmallVector<ForwardedRegister, 1> ForwardedMustTailRegParms; |
| |
| /// The number of bytes on stack consumed by the arguments being passed on |
| /// the stack. |
| unsigned ArgumentStackSize = 0; |
| |
| public: |
| explicit M68kMachineFunctionInfo(MachineFunction &MF) : MF(MF) {} |
| |
| bool getRestoreBasePointer() const { return RestoreBasePointerOffset != 0; } |
| void setRestoreBasePointer(const MachineFunction *MF); |
| int getRestoreBasePointerOffset() const { return RestoreBasePointerOffset; } |
| |
| unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; } |
| void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; } |
| |
| unsigned getBytesToPopOnReturn() const { return BytesToPopOnReturn; } |
| void setBytesToPopOnReturn(unsigned bytes) { BytesToPopOnReturn = bytes; } |
| |
| int getRAIndex() const { return ReturnAddrIndex; } |
| void setRAIndex(int Index) { ReturnAddrIndex = Index; } |
| |
| int getTCReturnAddrDelta() const { return TailCallReturnAddrDelta; } |
| void setTCReturnAddrDelta(int delta) { TailCallReturnAddrDelta = delta; } |
| |
| unsigned getGlobalBaseReg() const { return GlobalBaseReg; } |
| void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; } |
| |
| int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } |
| void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; } |
| |
| bool getHasPushSequences() const { return HasPushSequences; } |
| void setHasPushSequences(bool HasPush) { HasPushSequences = HasPush; } |
| |
| unsigned getSRetReturnReg() const { return SRetReturnReg; } |
| void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; } |
| |
| unsigned getArgumentStackSize() const { return ArgumentStackSize; } |
| void setArgumentStackSize(unsigned size) { ArgumentStackSize = size; } |
| |
| SmallVectorImpl<ForwardedRegister> &getForwardedMustTailRegParms() { |
| return ForwardedMustTailRegParms; |
| } |
| |
| private: |
| virtual void anchor(); |
| }; |
| |
| } // end of namespace llvm |
| |
| #endif // M68K_MACHINE_FUNCTION_INFO_H |