1 //===-- X86TargetObjectFile.cpp - X86 Object Info -------------------------===// 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 "X86TargetObjectFile.h" 11 #include "X86TargetMachine.h" 12 #include "llvm/ADT/StringExtras.h" 13 #include "llvm/CodeGen/MachineModuleInfoImpls.h" 14 #include "llvm/MC/MCContext.h" 15 #include "llvm/MC/MCExpr.h" 16 #include "llvm/MC/MCSectionELF.h" 17 #include "llvm/MC/MCSectionMachO.h" 18 #include "llvm/Target/Mangler.h" 19 #include "llvm/Support/Dwarf.h" 20 #include "llvm/Support/ELF.h" 21 using namespace llvm; 22 using namespace dwarf; 23 24 const MCExpr *X86_64MachoTargetObjectFile:: 25 getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang, 26 MachineModuleInfo *MMI, unsigned Encoding, 27 MCStreamer &Streamer) const { 28 29 // On Darwin/X86-64, we can reference dwarf symbols with foo@GOTPCREL+4, which 30 // is an indirect pc-relative reference. 31 if (Encoding & (DW_EH_PE_indirect | DW_EH_PE_pcrel)) { 32 const MCSymbol *Sym = Mang->getSymbol(GV); 33 const MCExpr *Res = 34 MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOTPCREL, getContext()); 35 const MCExpr *Four = MCConstantExpr::Create(4, getContext()); 36 return MCBinaryExpr::CreateAdd(Res, Four, getContext()); 37 } 38 39 return TargetLoweringObjectFileMachO:: 40 getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer); 41 } 42 43 MCSymbol *X86_64MachoTargetObjectFile:: 44 getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang, 45 MachineModuleInfo *MMI) const { 46 return Mang->getSymbol(GV); 47 } 48 49 void 50 X86LinuxTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) { 51 TargetLoweringObjectFileELF::Initialize(Ctx, TM); 52 InitializeELF(TM.Options.UseInitArray); 53 } 54
