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https://github.com/c64scene-ar/llvm-6502.git
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d6b43a317e
TargetLoweringObjectFileELF. Use this to support it on X86. Unlike ARM, on X86 it is not easy to find out if .init_array should be used or not, so the decision is made via TargetOptions and defaults to off. Add a command line option to llc that enables it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158692 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
//===-- X86TargetObjectFile.cpp - X86 Object Info -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "X86TargetObjectFile.h"
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#include "X86TargetMachine.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/CodeGen/MachineModuleInfoImpls.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCSectionELF.h"
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#include "llvm/MC/MCSectionMachO.h"
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#include "llvm/Target/Mangler.h"
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#include "llvm/Support/Dwarf.h"
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#include "llvm/Support/ELF.h"
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using namespace llvm;
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using namespace dwarf;
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const MCExpr *X8664_MachoTargetObjectFile::
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getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
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MachineModuleInfo *MMI, unsigned Encoding,
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MCStreamer &Streamer) const {
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// On Darwin/X86-64, we can reference dwarf symbols with foo@GOTPCREL+4, which
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// is an indirect pc-relative reference.
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if (Encoding & (DW_EH_PE_indirect | DW_EH_PE_pcrel)) {
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const MCSymbol *Sym = Mang->getSymbol(GV);
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const MCExpr *Res =
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MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOTPCREL, getContext());
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const MCExpr *Four = MCConstantExpr::Create(4, getContext());
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return MCBinaryExpr::CreateAdd(Res, Four, getContext());
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}
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return TargetLoweringObjectFileMachO::
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getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer);
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}
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MCSymbol *X8664_MachoTargetObjectFile::
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getCFIPersonalitySymbol(const GlobalValue *GV, Mangler *Mang,
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MachineModuleInfo *MMI) const {
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return Mang->getSymbol(GV);
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}
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void
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X86LinuxTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) {
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TargetLoweringObjectFileELF::Initialize(Ctx, TM);
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InitializeELF(TM.Options.UseInitArray);
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}
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