1 //===-- llvm/Target/X86/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/CodeGen/MachineModuleInfoImpls.h"
13 #include "llvm/MC/MCContext.h"
14 #include "llvm/MC/MCExpr.h"
15 #include "llvm/MC/MCSectionMachO.h"
16 #include "llvm/Target/Mangler.h"
17 #include "llvm/ADT/SmallString.h"
18 #include "llvm/Support/Dwarf.h"
19 using namespace llvm;
20 using namespace dwarf;
21
22 const MCExpr *X8664_MachoTargetObjectFile::
getExprForDwarfGlobalReference(const GlobalValue * GV,Mangler * Mang,MachineModuleInfo * MMI,unsigned Encoding,MCStreamer & Streamer) const23 getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
24 MachineModuleInfo *MMI, unsigned Encoding,
25 MCStreamer &Streamer) const {
26
27 // On Darwin/X86-64, we can reference dwarf symbols with foo@GOTPCREL+4, which
28 // is an indirect pc-relative reference.
29 if (Encoding & (DW_EH_PE_indirect | DW_EH_PE_pcrel)) {
30 const MCSymbol *Sym = Mang->getSymbol(GV);
31 const MCExpr *Res =
32 MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOTPCREL, getContext());
33 const MCExpr *Four = MCConstantExpr::Create(4, getContext());
34 return MCBinaryExpr::CreateAdd(Res, Four, getContext());
35 }
36
37 return TargetLoweringObjectFileMachO::
38 getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer);
39 }
40
41 MCSymbol *X8664_MachoTargetObjectFile::
getCFIPersonalitySymbol(const GlobalValue * GV,Mangler * Mang,MachineModuleInfo * MMI) const42 getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
43 MachineModuleInfo *MMI) const {
44 return Mang->getSymbol(GV);
45 }
46