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/*
* Copyright (c) 2002-2004 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
* Steve Reinhardt
*/
#ifndef __BASE_LOADER_OBJECT_FILE_HH__
#define __BASE_LOADER_OBJECT_FILE_HH__
#include <string>
#include "base/loader/image_file.hh"
#include "base/loader/image_file_data.hh"
#include "base/loader/memory_image.hh"
#include "base/logging.hh"
#include "base/types.hh"
class SymbolTable;
class ObjectFile : public ImageFile
{
public:
enum Arch {
UnknownArch,
Alpha,
SPARC64,
SPARC32,
Mips,
X86_64,
I386,
Arm64,
Arm,
Thumb,
Power,
Riscv64,
Riscv32
};
enum OpSys {
UnknownOpSys,
Tru64,
Linux,
Solaris,
LinuxArmOABI,
FreeBSD
};
protected:
Arch arch = UnknownArch;
OpSys opSys = UnknownOpSys;
ObjectFile(ImageFileDataPtr ifd);
public:
virtual ~ObjectFile() {};
virtual bool
loadAllSymbols(SymbolTable *symtab, Addr base=0,
Addr offset=0, Addr mask=MaxAddr)
{
return true;
};
virtual bool
loadGlobalSymbols(SymbolTable *symtab, Addr base=0,
Addr offset=0, Addr mask=MaxAddr)
{
return true;
}
virtual bool
loadLocalSymbols(SymbolTable *symtab, Addr base=0,
Addr offset=0, Addr mask=MaxAddr)
{
return true;
}
virtual bool
loadWeakSymbols(SymbolTable *symtab, Addr base=0,
Addr offset=0, Addr mask=MaxAddr)
{
return true;
}
virtual ObjectFile *getInterpreter() const { return nullptr; }
virtual bool relocatable() const { return false; }
virtual Addr
mapSize() const
{
panic("mapSize() should only be called on relocatable objects\n");
}
virtual void
updateBias(Addr bias_addr)
{
panic("updateBias() should only be called on relocatable objects\n");
}
virtual Addr bias() const { return 0; }
virtual bool hasTLS() { return false; }
Arch getArch() const { return arch; }
OpSys getOpSys() const { return opSys; }
protected:
Addr entry = 0;
public:
Addr entryPoint() const { return entry; }
};
class ObjectFileFormat
{
protected:
ObjectFileFormat();
public:
ObjectFileFormat(const ObjectFileFormat &) = delete;
void operator=(const ObjectFileFormat &) = delete;
virtual ObjectFile *load(ImageFileDataPtr data) = 0;
};
ObjectFile *createObjectFile(const std::string &fname, bool raw=false);
#endif // __BASE_LOADER_OBJECT_FILE_HH__
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