1 //===-- MipsSEFrameLowering.h - Mips32/64 frame lowering --------*- C++ -*-===//
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 //
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_MIPS_MIPSSEFRAMELOWERING_H
15 #define LLVM_LIB_TARGET_MIPS_MIPSSEFRAMELOWERING_H
16 
17 #include "MipsFrameLowering.h"
18 
19 namespace llvm {
20 
21 class MipsSEFrameLowering : public MipsFrameLowering {
22 public:
23   explicit MipsSEFrameLowering(const MipsSubtarget &STI);
24 
25   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
26   /// the function.
27   void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
28   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
29 
30   int getFrameIndexReference(const MachineFunction &MF, int FI,
31                              unsigned &FrameReg) const override;
32 
33   bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
34                                  MachineBasicBlock::iterator MI,
35                                  const std::vector<CalleeSavedInfo> &CSI,
36                                  const TargetRegisterInfo *TRI) const override;
37 
38   bool hasReservedCallFrame(const MachineFunction &MF) const override;
39 
40   void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
41                             RegScavenger *RS) const override;
42   unsigned ehDataReg(unsigned I) const;
43 
44 private:
45   void emitInterruptEpilogueStub(MachineFunction &MF,
46                                  MachineBasicBlock &MBB) const;
47   void emitInterruptPrologueStub(MachineFunction &MF,
48                                  MachineBasicBlock &MBB) const;
49 };
50 } // End llvm namespace
51 
52 #endif
53