BPFMCTargetDesc.cpp revision 288943
1//===-- BPFMCTargetDesc.cpp - BPF Target Descriptions ---------------------===// 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// This file provides BPF specific target descriptions. 11// 12//===----------------------------------------------------------------------===// 13 14#include "BPF.h" 15#include "BPFMCTargetDesc.h" 16#include "BPFMCAsmInfo.h" 17#include "InstPrinter/BPFInstPrinter.h" 18#include "llvm/MC/MCCodeGenInfo.h" 19#include "llvm/MC/MCInstrInfo.h" 20#include "llvm/MC/MCRegisterInfo.h" 21#include "llvm/MC/MCStreamer.h" 22#include "llvm/MC/MCSubtargetInfo.h" 23#include "llvm/Support/ErrorHandling.h" 24#include "llvm/Support/TargetRegistry.h" 25 26#define GET_INSTRINFO_MC_DESC 27#include "BPFGenInstrInfo.inc" 28 29#define GET_SUBTARGETINFO_MC_DESC 30#include "BPFGenSubtargetInfo.inc" 31 32#define GET_REGINFO_MC_DESC 33#include "BPFGenRegisterInfo.inc" 34 35using namespace llvm; 36 37static MCInstrInfo *createBPFMCInstrInfo() { 38 MCInstrInfo *X = new MCInstrInfo(); 39 InitBPFMCInstrInfo(X); 40 return X; 41} 42 43static MCRegisterInfo *createBPFMCRegisterInfo(const Triple &TT) { 44 MCRegisterInfo *X = new MCRegisterInfo(); 45 InitBPFMCRegisterInfo(X, BPF::R11 /* RAReg doesn't exist */); 46 return X; 47} 48 49static MCSubtargetInfo *createBPFMCSubtargetInfo(const Triple &TT, 50 StringRef CPU, StringRef FS) { 51 return createBPFMCSubtargetInfoImpl(TT, CPU, FS); 52} 53 54static MCCodeGenInfo *createBPFMCCodeGenInfo(const Triple &TT, Reloc::Model RM, 55 CodeModel::Model CM, 56 CodeGenOpt::Level OL) { 57 MCCodeGenInfo *X = new MCCodeGenInfo(); 58 X->initMCCodeGenInfo(RM, CM, OL); 59 return X; 60} 61 62static MCStreamer *createBPFMCStreamer(const Triple &T, 63 MCContext &Ctx, MCAsmBackend &MAB, 64 raw_pwrite_stream &OS, MCCodeEmitter *Emitter, 65 bool RelaxAll) { 66 return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll); 67} 68 69static MCInstPrinter *createBPFMCInstPrinter(const Triple &T, 70 unsigned SyntaxVariant, 71 const MCAsmInfo &MAI, 72 const MCInstrInfo &MII, 73 const MCRegisterInfo &MRI) { 74 if (SyntaxVariant == 0) 75 return new BPFInstPrinter(MAI, MII, MRI); 76 return 0; 77} 78 79extern "C" void LLVMInitializeBPFTargetMC() { 80 for (Target *T : {&TheBPFleTarget, &TheBPFbeTarget, &TheBPFTarget}) { 81 // Register the MC asm info. 82 RegisterMCAsmInfo<BPFMCAsmInfo> X(*T); 83 84 // Register the MC codegen info. 85 TargetRegistry::RegisterMCCodeGenInfo(*T, createBPFMCCodeGenInfo); 86 87 // Register the MC instruction info. 88 TargetRegistry::RegisterMCInstrInfo(*T, createBPFMCInstrInfo); 89 90 // Register the MC register info. 91 TargetRegistry::RegisterMCRegInfo(*T, createBPFMCRegisterInfo); 92 93 // Register the MC subtarget info. 94 TargetRegistry::RegisterMCSubtargetInfo(*T, 95 createBPFMCSubtargetInfo); 96 97 // Register the object streamer 98 TargetRegistry::RegisterELFStreamer(*T, createBPFMCStreamer); 99 100 // Register the MCInstPrinter. 101 TargetRegistry::RegisterMCInstPrinter(*T, createBPFMCInstPrinter); 102 } 103 104 // Register the MC code emitter 105 TargetRegistry::RegisterMCCodeEmitter(TheBPFleTarget, createBPFMCCodeEmitter); 106 TargetRegistry::RegisterMCCodeEmitter(TheBPFbeTarget, createBPFbeMCCodeEmitter); 107 108 // Register the ASM Backend 109 TargetRegistry::RegisterMCAsmBackend(TheBPFleTarget, createBPFAsmBackend); 110 TargetRegistry::RegisterMCAsmBackend(TheBPFbeTarget, createBPFbeAsmBackend); 111 112 if (sys::IsLittleEndianHost) { 113 TargetRegistry::RegisterMCCodeEmitter(TheBPFTarget, createBPFMCCodeEmitter); 114 TargetRegistry::RegisterMCAsmBackend(TheBPFTarget, createBPFAsmBackend); 115 } else { 116 TargetRegistry::RegisterMCCodeEmitter(TheBPFTarget, createBPFbeMCCodeEmitter); 117 TargetRegistry::RegisterMCAsmBackend(TheBPFTarget, createBPFbeAsmBackend); 118 } 119} 120