1//===-- llvm/Target/ARMTargetObjectFile.cpp - ARM Object Info Impl --------===//
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 "ARMTargetObjectFile.h"
11#include "ARMSubtarget.h"
12#include "llvm/ADT/StringExtras.h"
13#include "llvm/IR/Mangler.h"
14#include "llvm/MC/MCAsmInfo.h"
15#include "llvm/MC/MCContext.h"
16#include "llvm/MC/MCExpr.h"
17#include "llvm/MC/MCSectionELF.h"
18#include "llvm/Support/Dwarf.h"
19#include "llvm/Support/ELF.h"
20#include "llvm/Target/TargetLowering.h"
21using namespace llvm;
22using namespace dwarf;
23
24//===----------------------------------------------------------------------===//
25//                               ELF Target
26//===----------------------------------------------------------------------===//
27
28void ARMElfTargetObjectFile::Initialize(MCContext &Ctx,
29                                        const TargetMachine &TM) {
30  bool isAAPCS_ABI = TM.getSubtarget<ARMSubtarget>().isAAPCS_ABI();
31  TargetLoweringObjectFileELF::Initialize(Ctx, TM);
32  InitializeELF(isAAPCS_ABI);
33
34  if (isAAPCS_ABI) {
35    LSDASection = nullptr;
36  }
37
38  AttributesSection =
39    getContext().getELFSection(".ARM.attributes",
40                               ELF::SHT_ARM_ATTRIBUTES,
41                               0,
42                               SectionKind::getMetadata());
43}
44
45const MCExpr *ARMElfTargetObjectFile::getTTypeGlobalReference(
46    const GlobalValue *GV, unsigned Encoding, Mangler &Mang,
47    const TargetMachine &TM, MachineModuleInfo *MMI,
48    MCStreamer &Streamer) const {
49  if (TM.getMCAsmInfo()->getExceptionHandlingType() != ExceptionHandling::ARM)
50    return TargetLoweringObjectFileELF::getTTypeGlobalReference(
51        GV, Encoding, Mang, TM, MMI, Streamer);
52
53  assert(Encoding == DW_EH_PE_absptr && "Can handle absptr encoding only");
54
55  return MCSymbolRefExpr::Create(TM.getSymbol(GV, Mang),
56                                 MCSymbolRefExpr::VK_ARM_TARGET2, getContext());
57}
58
59const MCExpr *ARMElfTargetObjectFile::
60getDebugThreadLocalSymbol(const MCSymbol *Sym) const {
61  return MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_ARM_TLSLDO,
62                                 getContext());
63}
64