BPFMCTargetDesc.cpp revision 283631 
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(StringRef TT) {
44  MCRegisterInfo *X = new MCRegisterInfo();
45  InitBPFMCRegisterInfo(X, BPF::R11 /* RAReg doesn't exist */);
46  return X;
47}
48
49static MCSubtargetInfo *createBPFMCSubtargetInfo(StringRef TT, StringRef CPU,
50                                                 StringRef FS) {
51  MCSubtargetInfo *X = new MCSubtargetInfo();
52  InitBPFMCSubtargetInfo(X, TT, CPU, FS);
53  return X;
54}
55
56static MCCodeGenInfo *createBPFMCCodeGenInfo(StringRef TT, Reloc::Model RM,
57                                             CodeModel::Model CM,
58                                             CodeGenOpt::Level OL) {
59  MCCodeGenInfo *X = new MCCodeGenInfo();
60  X->initMCCodeGenInfo(RM, CM, OL);
61  return X;
62}
63
64static MCStreamer *createBPFMCStreamer(const Triple &T,
65                                       MCContext &Ctx, MCAsmBackend &MAB,
66                                       raw_pwrite_stream &OS, MCCodeEmitter *Emitter,
67                                       bool RelaxAll) {
68  return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
69}
70
71static MCInstPrinter *createBPFMCInstPrinter(const Triple &T,
72                                             unsigned SyntaxVariant,
73                                             const MCAsmInfo &MAI,
74                                             const MCInstrInfo &MII,
75                                             const MCRegisterInfo &MRI) {
76  if (SyntaxVariant == 0)
77    return new BPFInstPrinter(MAI, MII, MRI);
78  return 0;
79}
80
81extern "C" void LLVMInitializeBPFTargetMC() {
82  // Register the MC asm info.
83  RegisterMCAsmInfo<BPFMCAsmInfo> X(TheBPFTarget);
84
85  // Register the MC codegen info.
86  TargetRegistry::RegisterMCCodeGenInfo(TheBPFTarget, createBPFMCCodeGenInfo);
87
88  // Register the MC instruction info.
89  TargetRegistry::RegisterMCInstrInfo(TheBPFTarget, createBPFMCInstrInfo);
90
91  // Register the MC register info.
92  TargetRegistry::RegisterMCRegInfo(TheBPFTarget, createBPFMCRegisterInfo);
93
94  // Register the MC subtarget info.
95  TargetRegistry::RegisterMCSubtargetInfo(TheBPFTarget,
96                                          createBPFMCSubtargetInfo);
97
98  // Register the MC code emitter
99  TargetRegistry::RegisterMCCodeEmitter(TheBPFTarget,
100                                        llvm::createBPFMCCodeEmitter);
101
102  // Register the ASM Backend
103  TargetRegistry::RegisterMCAsmBackend(TheBPFTarget, createBPFAsmBackend);
104
105  // Register the object streamer
106  TargetRegistry::RegisterELFStreamer(TheBPFTarget, createBPFMCStreamer);
107
108  // Register the MCInstPrinter.
109  TargetRegistry::RegisterMCInstPrinter(TheBPFTarget, createBPFMCInstPrinter);
110}
111