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/*
* Copyright (c) 2003-2005 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: Steve Reinhardt
*/
#ifndef __ELF_OBJECT_HH__
#define __ELF_OBJECT_HH__
#include <set>
#include <vector>
#include "base/loader/object_file.hh"
class ElfObject : public ObjectFile
{
protected:
//The global definition of a "Section" is closest to elf's segments.
typedef ObjectFile::Section Segment;
//These values are provided to a linux process by the kernel, so we
//need to keep them around.
Addr _programHeaderTable;
uint16_t _programHeaderSize;
uint16_t _programHeaderCount;
std::set<std::string> sectionNames;
/// Helper functions for loadGlobalSymbols() and loadLocalSymbols().
bool loadSomeSymbols(SymbolTable *symtab, int binding, Addr mask);
ElfObject(const std::string &_filename, int _fd,
size_t _len, uint8_t *_data,
Arch _arch, OpSys _opSys);
void getSections();
bool sectionExists(std::string sec);
std::vector<Segment> extraSegments;
public:
virtual ~ElfObject() {}
bool loadSections(Port *memPort,
Addr addrMask = std::numeric_limits<Addr>::max());
virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask =
std::numeric_limits<Addr>::max());
virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask =
std::numeric_limits<Addr>::max());
virtual bool isDynamic() { return sectionExists(".interp"); }
virtual bool hasTLS() { return sectionExists(".tbss"); }
static ObjectFile *tryFile(const std::string &fname, int fd,
size_t len, uint8_t *data);
Addr programHeaderTable() {return _programHeaderTable;}
uint16_t programHeaderSize() {return _programHeaderSize;}
uint16_t programHeaderCount() {return _programHeaderCount;}
};
#endif // __ELF_OBJECT_HH__
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