lib/Target/AVR/AVRTargetObjectFile.cpp

//===-- AVRTargetObjectFile.cpp - AVR Object Files ------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "AVRTargetObjectFile.h"

#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Mangler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/Support/ELF.h"

#include "AVR.h"

namespace llvm {
void AVRTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) {
  Base::Initialize(Ctx, TM);
  ProgmemDataSection =
      Ctx.getELFSection(".progmem.data", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
}

MCSection *
AVRTargetObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
                                            SectionKind Kind, Mangler &Mang,
                                            const TargetMachine &TM) const {
  // Global values in flash memory are placed in the progmem.data section
  // unless they already have a user assigned section.
  if (AVR::isProgramMemoryAddress(GV) && !GV->hasSection())
    return ProgmemDataSection;

  // Otherwise, we work the same way as ELF.
  return Base::SelectSectionForGlobal(GV, Kind, Mang, TM);
}
} // end of namespace llvm