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//===-- llvm/Target/X86/X86TargetObjectFile.cpp - X86 Object Info ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "X86TargetObjectFile.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Mangler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
using namespace llvm;
const MCExpr *X8632_MachoTargetObjectFile::
getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
MachineModuleInfo *MMI,
bool &IsIndirect, bool &IsPCRel) const {
// The mach-o version of this method defaults to returning a stub reference.
IsIndirect = true;
IsPCRel = false;
MachineModuleInfoMachO &MachOMMI =
MMI->getObjFileInfo<MachineModuleInfoMachO>();
SmallString<128> Name;
Mang->getNameWithPrefix(Name, GV, true);
Name += "$non_lazy_ptr";
// Add information about the stub reference to MachOMMI so that the stub gets
// emitted by the asmprinter.
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name.str());
const MCSymbol *&StubSym = MachOMMI.getGVStubEntry(Sym);
if (StubSym == 0) {
Name.clear();
Mang->getNameWithPrefix(Name, GV, false);
StubSym = getContext().GetOrCreateSymbol(Name.str());
}
return MCSymbolRefExpr::Create(Sym, getContext());
}
const MCExpr *X8664_MachoTargetObjectFile::
getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
MachineModuleInfo *MMI,
bool &IsIndirect, bool &IsPCRel) const {
// On Darwin/X86-64, we can reference dwarf symbols with foo@GOTPCREL+4, which
// is an indirect pc-relative reference.
IsIndirect = true;
IsPCRel = true;
SmallString<128> Name;
Mang->getNameWithPrefix(Name, GV, false);
Name += "@GOTPCREL";
const MCExpr *Res =
MCSymbolRefExpr::Create(Name.str(), getContext());
const MCExpr *Four = MCConstantExpr::Create(4, getContext());
return MCBinaryExpr::CreateAdd(Res, Four, getContext());
}
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