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annotate lib/Target/X86/X86TargetObjectFile.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children 54457678186b
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1 //===-- X86TargetObjectFile.cpp - X86 Object Info -------------------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "X86TargetObjectFile.h"
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11 #include "llvm/MC/MCContext.h"
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12 #include "llvm/MC/MCExpr.h"
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13 #include "llvm/MC/MCSectionELF.h"
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14 #include "llvm/Support/Dwarf.h"
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15 #include "llvm/Target/Mangler.h"
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16
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17 using namespace llvm;
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18 using namespace dwarf;
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19
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20 const MCExpr *X86_64MachoTargetObjectFile::
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21 getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
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22 MachineModuleInfo *MMI, unsigned Encoding,
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23 MCStreamer &Streamer) const {
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24
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25 // On Darwin/X86-64, we can reference dwarf symbols with foo@GOTPCREL+4, which
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26 // is an indirect pc-relative reference.
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27 if (Encoding & (DW_EH_PE_indirect | DW_EH_PE_pcrel)) {
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28 const MCSymbol *Sym = getSymbol(*Mang, GV);
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29 const MCExpr *Res =
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30 MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOTPCREL, getContext());
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31 const MCExpr *Four = MCConstantExpr::Create(4, getContext());
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32 return MCBinaryExpr::CreateAdd(Res, Four, getContext());
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33 }
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34
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35 return TargetLoweringObjectFileMachO::
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36 getTTypeGlobalReference(GV, Mang, MMI, Encoding, Streamer);
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37 }
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38
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39 MCSymbol *X86_64MachoTargetObjectFile::
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40 getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
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41 MachineModuleInfo *MMI) const {
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42 return getSymbol(*Mang, GV);
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43 }
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44
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45 void
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46 X86LinuxTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) {
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47 TargetLoweringObjectFileELF::Initialize(Ctx, TM);
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48 InitializeELF(TM.Options.UseInitArray);
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49 }
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50
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51 const MCExpr *
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52 X86LinuxTargetObjectFile::getDebugThreadLocalSymbol(
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53 const MCSymbol *Sym) const {
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54 return MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_DTPOFF, getContext());
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55 }