third_party/llvm-7.0/llvm/lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.cpp

//===-- RISCVELFStreamer.cpp - RISCV ELF Target Streamer Methods ----------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides RISCV specific target streamer methods.
//
//===----------------------------------------------------------------------===//

#include "RISCVELFStreamer.h"
#include "RISCVMCTargetDesc.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCSubtargetInfo.h"

using namespace llvm;

// This part is for ELF object output.
RISCVTargetELFStreamer::RISCVTargetELFStreamer(MCStreamer &S,
                                               const MCSubtargetInfo &STI)
    : RISCVTargetStreamer(S) {
  MCAssembler &MCA = getStreamer().getAssembler();

  const FeatureBitset &Features = STI.getFeatureBits();

  unsigned EFlags = MCA.getELFHeaderEFlags();

  if (Features[RISCV::FeatureStdExtC])
    EFlags |= ELF::EF_RISCV_RVC;

  MCA.setELFHeaderEFlags(EFlags);
}

MCELFStreamer &RISCVTargetELFStreamer::getStreamer() {
  return static_cast<MCELFStreamer &>(Streamer);
}

void RISCVTargetELFStreamer::emitDirectiveOptionRVC() {}
void RISCVTargetELFStreamer::emitDirectiveOptionNoRVC() {}