lib/MC/MCSectionCOFF.cpp

//===- lib/MC/MCSectionCOFF.cpp - COFF Code Section Representation --------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;

MCSectionCOFF::~MCSectionCOFF() {} // anchor.

// ShouldOmitSectionDirective - Decides whether a '.section' directive
// should be printed before the section name
bool MCSectionCOFF::ShouldOmitSectionDirective(StringRef Name,
                                               const MCAsmInfo &MAI) const {
  
  // FIXME: Does .section .bss/.data/.text work everywhere??
  if (Name == ".text" || Name == ".data" || Name == ".bss")
    return true;

  return false;
}

void MCSectionCOFF::PrintSwitchToSection(const MCAsmInfo &MAI,
                                         raw_ostream &OS) const {
  
  // standard sections don't require the '.section'
  if (ShouldOmitSectionDirective(SectionName, MAI)) {
    OS << '\t' << getSectionName() << '\n';
    return;
  }

  OS << "\t.section\t" << getSectionName() << ",\"";
  if (getKind().isText())
    OS << 'x';
  if (getKind().isWriteable())
    OS << 'w';
  else
    OS << 'r';
  if (getCharacteristics() & MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE)
    OS << 'n';
  OS << "\"\n";
}