lib/Target/XCore/XCoreTargetObjectFile.cpp

   1 //===-- XCoreTargetObjectFile.cpp - XCore object files --------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "XCoreTargetObjectFile.h"
  11 #include "XCoreSubtarget.h"
  12 #include "llvm/MC/MCSectionELF.h"
  13 #include "llvm/Target/TargetMachine.h"
  14 using namespace llvm;
  15
  16
  17 void XCoreTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM){
  18   TargetLoweringObjectFileELF::Initialize(Ctx, TM);
  19
  20   DataSection = getELFSection(".dp.data", MCSectionELF::SHT_PROGBITS,
  21                               MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
  22                               SectionKind::getDataRel());
  23   BSSSection = getELFSection(".dp.bss", MCSectionELF::SHT_NOBITS,
  24                               MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
  25                               SectionKind::getBSS());
  26
  27   // TLS globals are lowered in the backend to arrays indexed by the current
  28   // thread id. After lowering they require no special handling by the linker
  29   // and can be placed in the standard data / bss sections.
  30   TLSDataSection = DataSection;
  31   TLSBSSSection = BSSSection;
  32
  33   if (TM.getSubtarget<XCoreSubtarget>().isXS1A())
  34     // FIXME: Why is this writable ("datarel")???
  35     ReadOnlySection =
  36       getELFSection(".dp.rodata", MCSectionELF::SHT_PROGBITS,
  37                     MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
  38                     SectionKind::getDataRel());
  39   else
  40     ReadOnlySection =
  41       getELFSection(".cp.rodata", MCSectionELF::SHT_PROGBITS,
  42                     MCSectionELF::SHF_ALLOC, SectionKind::getReadOnly());
  43 }