path: root/lib/CodeGen/TargetLoweringObjectFileImpl.cpp

//===-- llvm/CodeGen/TargetLoweringObjectFileImpl.cpp - Object File Info --===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements classes used to handle lowerings specific to common
// object file formats.
//
//===----------------------------------------------------------------------===//

#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/GlobalVariable.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
using namespace llvm;
using namespace dwarf;

//===----------------------------------------------------------------------===//
//                                  ELF
//===----------------------------------------------------------------------===//

void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
                                             const TargetMachine &TM) {
  TargetLoweringObjectFile::Initialize(Ctx, TM);

  BSSSection =
    getContext().getELFSection(".bss", ELF::SHT_NOBITS,
                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
                               SectionKind::getBSS());

  TextSection =
    getContext().getELFSection(".text", ELF::SHT_PROGBITS,
                               ELF::SHF_EXECINSTR |
                               ELF::SHF_ALLOC,
                               SectionKind::getText());

  DataSection =
    getContext().getELFSection(".data", ELF::SHT_PROGBITS,
                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
                               SectionKind::getDataRel());

  ReadOnlySection =
    getContext().getELFSection(".rodata", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC,
                               SectionKind::getReadOnly());

  TLSDataSection =
    getContext().getELFSection(".tdata", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC | ELF::SHF_TLS |
                               ELF::SHF_WRITE,
                               SectionKind::getThreadData());

  TLSBSSSection =
    getContext().getELFSection(".tbss", ELF::SHT_NOBITS,
                               ELF::SHF_ALLOC | ELF::SHF_TLS |
                               ELF::SHF_WRITE,
                               SectionKind::getThreadBSS());

  DataRelSection =
    getContext().getELFSection(".data.rel", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
                               SectionKind::getDataRel());

  DataRelLocalSection =
    getContext().getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
                               SectionKind::getDataRelLocal());

  DataRelROSection =
    getContext().getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
                               SectionKind::getReadOnlyWithRel());

  DataRelROLocalSection =
    getContext().getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC |ELF::SHF_WRITE,
                               SectionKind::getReadOnlyWithRelLocal());

  MergeableConst4Section =
    getContext().getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC |ELF::SHF_MERGE,
                               SectionKind::getMergeableConst4());

  MergeableConst8Section =
    getContext().getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC |ELF::SHF_MERGE,
                               SectionKind::getMergeableConst8());

  MergeableConst16Section =
    getContext().getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
                               ELF::SHF_ALLOC </