MCXCOFFObjectWriter.h

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//===-- llvm/MC/MCXCOFFObjectWriter.h - XCOFF Object Writer ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_MC_MCXCOFFOBJECTWRITER_H
#define LLVM_MC_MCXCOFFOBJECTWRITER_H
 
#include "llvm/MC/MCObjectWriter.h"
 
namespace llvm {
 
class raw_pwrite_stream;
 
class MCXCOFFObjectTargetWriter : public MCObjectTargetWriter {
protected:
  MCXCOFFObjectTargetWriter(bool Is64Bit);
 
public:
  ~MCXCOFFObjectTargetWriter() override;
 
  Triple::ObjectFormatType getFormat() const override { return Triple::XCOFF; }
  static bool classof(const MCObjectTargetWriter *W) {
    return W->getFormat() == Triple::XCOFF;
  }
  bool is64Bit() const { return Is64Bit; }
 
  // Returns relocation info such as type, sign and size.
  // First element of the pair contains type,
  // second element contains sign and size.
  virtual std::pair<uint8_t, uint8_t>
  getRelocTypeAndSignSize(const MCValue &Target, const MCFixup &Fixup,
                          bool IsPCRel) const = 0;
 
private:
  bool Is64Bit;
};
 
class XCOFFObjectWriter : public MCObjectWriter {
  // AIX specific CPU type.
  std::string CPUType;
 
public:
  virtual void addExceptionEntry(const MCSymbol *Symbol, const MCSymbol *Trap,
                                 unsigned LanguageCode, unsigned ReasonCode,
                                 unsigned FunctionSize, bool hasDebug) = 0;
  virtual void addCInfoSymEntry(StringRef Name, StringRef Metadata) = 0;
  StringRef getCPUType() const { return CPUType; }
  void setCPU(StringRef TargetCPU) { CPUType = TargetCPU; }
};
 
std::unique_ptr<MCObjectWriter>
createXCOFFObjectWriter(std::unique_ptr<MCXCOFFObjectTargetWriter> MOTW,
                        raw_pwrite_stream &OS);
 
} // end namespace llvm
 
#endif // LLVM_MC_MCXCOFFOBJECTWRITER_H