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//===-- llvm/MC/MCELFObjectWriter.h - ELF Object Writer ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCELFOBJECTWRITER_H
#define LLVM_MC_MCELFOBJECTWRITER_H
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ELF.h"
namespace llvm {
class MCELFObjectTargetWriter {
const uint8_t OSABI;
const uint16_t EMachine;
const unsigned HasRelocationAddend : 1;
const unsigned Is64Bit : 1;
protected:
MCELFObjectTargetWriter(bool Is64Bit_, uint8_t OSABI_,
uint16_t EMachine_, bool HasRelocationAddend_);
public:
static uint8_t getOSABI(Triple::OSType OSType) {
switch (OSType) {
case Triple::FreeBSD:
return ELF::ELFOSABI_FREEBSD;
case Triple::Linux:
return ELF::ELFOSABI_LINUX;
default:
return ELF::ELFOSABI_NONE;
}
}
virtual ~MCELFObjectTargetWriter();
virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel, bool IsRelocWithSymbol,
int64_t Addend) const = 0;
virtual unsigned getEFlags() const;
virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
const MCValue &Target,
const MCFragment &F,
const MCFixup &Fixup,
bool IsPCRel) const;
virtual void adjustFixupOffset(const MCFixup &Fixup,
uint64_t &RelocOffset);
/// @name Accessors
/// @{
uint8_t getOSABI() { return OSABI; }
uint16_t getEMachine() { return EMachine; }
bool hasRelocationAddend() { return HasRelocationAddend; }
bool is64Bit() const { return Is64Bit; }
/// @}
};
/// \brief Construct a new ELF writer instance.
///
/// \param MOTW - The target specific ELF writer subclass.
/// \param OS - The stream to write to.
/// \returns The constructed object writer.
MCObjectWriter *createELFObjectWriter(MCELFObjectTargetWriter *MOTW,
raw_ostream &OS, bool IsLittleEndian);
} // End llvm namespace
#endif
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