llvm-for-llvmta/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp

//===-- SparcMCTargetDesc.cpp - Sparc Target Descriptions -----------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file provides Sparc specific target descriptions.
//
//===----------------------------------------------------------------------===//

#include "SparcMCTargetDesc.h"
#include "SparcInstPrinter.h"
#include "SparcMCAsmInfo.h"
#include "SparcTargetStreamer.h"
#include "TargetInfo/SparcTargetInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/TargetRegistry.h"

using namespace llvm;

#define GET_INSTRINFO_MC_DESC
#include "SparcGenInstrInfo.inc"

#define GET_SUBTARGETINFO_MC_DESC
#include "SparcGenSubtargetInfo.inc"

#define GET_REGINFO_MC_DESC
#include "SparcGenRegisterInfo.inc"

static MCAsmInfo *createSparcMCAsmInfo(const MCRegisterInfo &MRI,
                                       const Triple &TT,
                                       const MCTargetOptions &Options) {
  MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
  unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
  MCCFIInstruction Inst = MCCFIInstruction::cfiDefCfa(nullptr, Reg, 0);
  MAI->addInitialFrameState(Inst);
  return MAI;
}

static MCAsmInfo *createSparcV9MCAsmInfo(const MCRegisterInfo &MRI,
                                         const Triple &TT,
                                         const MCTargetOptions &Options) {
  MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
  unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
  MCCFIInstruction Inst = MCCFIInstruction::cfiDefCfa(nullptr, Reg, 2047);
  MAI->addInitialFrameState(Inst);
  return MAI;
}

static MCInstrInfo *createSparcMCInstrInfo() {
  MCInstrInfo *X = new MCInstrInfo();
  InitSparcMCInstrInfo(X);
  return X;
}

static MCRegisterInfo *createSparcMCRegisterInfo(const Triple &TT) {
  MCRegisterInfo *X = new MCRegisterInfo();
  InitSparcMCRegisterInfo(X, SP::O7);
  return X;
}

static MCSubtargetInfo *
createSparcMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
  if (CPU.empty())
    CPU = (TT.getArch() == Triple::sparcv9) ? "v9" : "v8";
  return createSparcMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
}

static MCTargetStreamer *
createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
  return new SparcTargetELFStreamer(S);
}

static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
                                                 formatted_raw_ostream &OS,
                                                 MCInstPrinter *InstPrint,
                                                 bool isVerboseAsm) {
  return new SparcTargetAsmStreamer(S, OS);
}

static MCInstPrinter *createSparcMCInstPrinter(const Triple &T,
                                               unsigned SyntaxVariant,
                                               const MCAsmInfo &MAI,
                                               const MCInstrInfo &MII,
                                               const MCRegisterInfo &MRI) {
  return new SparcInstPrinter(MAI, MII, MRI);
}

extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeSparcTargetMC() {
  // Register the MC asm info.
  RegisterMCAsmInfoFn X(getTheSparcTarget(), createSparcMCAsmInfo);
  RegisterMCAsmInfoFn Y(getTheSparcV9Target(), createSparcV9MCAsmInfo);
  RegisterMCAsmInfoFn Z(getTheSparcelTarget(), createSparcMCAsmInfo);

  for (Target *T :
       {&getTheSparcTarget(), &getTheSparcV9Target(), &getTheSparcelTarget()}) {
    // Register the MC instruction info.
    TargetRegistry::RegisterMCInstrInfo(*T, createSparcMCInstrInfo);

    // Register the MC register info.
    TargetRegistry::RegisterMCRegInfo(*T, createSparcMCRegisterInfo);

    // Register the MC subtarget info.
    TargetRegistry::RegisterMCSubtargetInfo(*T, createSparcMCSubtargetInfo);

    // Register the MC Code Emitter.
    TargetRegistry::RegisterMCCodeEmitter(*T, createSparcMCCodeEmitter);

    // Register the asm backend.
    TargetRegistry::RegisterMCAsmBackend(*T, createSparcAsmBackend);

    // Register the object target streamer.
    TargetRegistry::RegisterObjectTargetStreamer(*T,
                                                 createObjectTargetStreamer);

    // Register the asm streamer.
    TargetRegistry::RegisterAsmTargetStreamer(*T, createTargetAsmStreamer);

    // Register the MCInstPrinter
    TargetRegistry::RegisterMCInstPrinter(*T, createSparcMCInstPrinter);
  }
}