1 //===-- AArch64TargetObjectFile.cpp - AArch64 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 "AArch64TargetObjectFile.h" 11 #include "AArch64TargetMachine.h" 12 #include "llvm/IR/Mangler.h" 13 #include "llvm/MC/MCContext.h" 14 #include "llvm/MC/MCExpr.h" 15 #include "llvm/MC/MCStreamer.h" 16 #include "llvm/Support/Dwarf.h" 17 using namespace llvm; 18 using namespace dwarf; 19 20 void AArch64_ELFTargetObjectFile::Initialize(MCContext &Ctx, 21 const TargetMachine &TM) { 22 TargetLoweringObjectFileELF::Initialize(Ctx, TM); 23 InitializeELF(TM.Options.UseInitArray); 24 } 25 26 const MCExpr *AArch64_MachoTargetObjectFile::getTTypeGlobalReference( 27 const GlobalValue *GV, unsigned Encoding, Mangler &Mang, 28 const TargetMachine &TM, MachineModuleInfo *MMI, 29 MCStreamer &Streamer) const { 30 // On Darwin, we can reference dwarf symbols with foo@GOT-., which 31 // is an indirect pc-relative reference. The default implementation 32 // won't reference using the GOT, so we need this target-specific 33 // version. 34 if (Encoding & (DW_EH_PE_indirect | DW_EH_PE_pcrel)) { 35 const MCSymbol *Sym = TM.getSymbol(GV, Mang); 36 const MCExpr *Res = 37 MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOT, getContext()); 38 MCSymbol *PCSym = getContext().CreateTempSymbol(); 39 Streamer.EmitLabel(PCSym); 40 const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, getContext()); 41 return MCBinaryExpr::CreateSub(Res, PC, getContext()); 42 } 43 44 return TargetLoweringObjectFileMachO::getTTypeGlobalReference( 45 GV, Encoding, Mang, TM, MMI, Streamer); 46 } 47 48 MCSymbol *AArch64_MachoTargetObjectFile::getCFIPersonalitySymbol( 49 const GlobalValue *GV, Mangler &Mang, const TargetMachine &TM, 50 MachineModuleInfo *MMI) const { 51 return TM.getSymbol(GV, Mang); 52 } 53
