1ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines//===-- BPFFrameLowering.cpp - BPF Frame Information ----------------------===// 2ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// 3ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// The LLVM Compiler Infrastructure 4ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// 5ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// This file is distributed under the University of Illinois Open Source 6ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// License. See LICENSE.TXT for details. 7ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// 8ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines//===----------------------------------------------------------------------===// 9ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// 10ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// This file contains the BPF implementation of TargetFrameLowering class. 11ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines// 12ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines//===----------------------------------------------------------------------===// 13ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines 14ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "BPFFrameLowering.h" 15ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "BPFInstrInfo.h" 16ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "BPFSubtarget.h" 17ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "llvm/CodeGen/MachineFrameInfo.h" 18ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "llvm/CodeGen/MachineFunction.h" 19ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "llvm/CodeGen/MachineInstrBuilder.h" 20ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines#include "llvm/CodeGen/MachineRegisterInfo.h" 21ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines 22ebe69fe11e48d322045d5949c83283927a0d790bStephen Hinesusing namespace llvm; 23ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines 24ebe69fe11e48d322045d5949c83283927a0d790bStephen Hinesbool BPFFrameLowering::hasFP(const MachineFunction &MF) const { return true; } 25ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines 266948897e478cbd66626159776a8017b3c18579b9Pirama Arumuga Nainarvoid BPFFrameLowering::emitPrologue(MachineFunction &MF, 276948897e478cbd66626159776a8017b3c18579b9Pirama Arumuga Nainar MachineBasicBlock &MBB) const {} 28ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines 29ebe69fe11e48d322045d5949c83283927a0d790bStephen Hinesvoid BPFFrameLowering::emitEpilogue(MachineFunction &MF, 30ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines MachineBasicBlock &MBB) const {} 31ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines 32f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainarvoid BPFFrameLowering::determineCalleeSaves(MachineFunction &MF, 33f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar BitVector &SavedRegs, 34f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar RegScavenger *RS) const { 35f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS); 36f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar SavedRegs.reset(BPF::R6); 37f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar SavedRegs.reset(BPF::R7); 38f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar SavedRegs.reset(BPF::R8); 39f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar SavedRegs.reset(BPF::R9); 40ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines} 41