?? elfisection.cpp
字號(hào):
/*
ELFISection.cpp - ELF section reader implementation.
Copyright (C) 2001 Serge Lamikhov-Center <to_serge@users.sourceforge.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ELFIImpl.h"
#include "ELFIOUtils.h"
ELFISection::ELFISection( IELFI* pIELFI, std::istream* pStream, int nFileOffset,
Elf32_Shdr* pHeader, Elf32_Half index ) :
m_pIELFI( pIELFI ), m_pStream( pStream ), m_nFileOffset( nFileOffset), m_index( index )
{
std::fill_n( reinterpret_cast<char*>( &m_sh ), sizeof( m_sh ), '\0' );
m_sh = *pHeader;
m_data = 0;
}
ELFISection::~ELFISection()
{
delete m_data;
}
int
ELFISection::AddRef() const
{
return m_pIELFI->AddRef();
}
int
ELFISection::Release() const
{
return m_pIELFI->Release();
}
Elf32_Half
ELFISection::GetIndex() const
{
return m_index;
}
std::string
ELFISection::GetName() const
{
std::string strRet = "";
const char* pName = 0;
Elf32_Half shstrndx = m_pIELFI->GetSecStrNdx();
if ( SHN_UNDEF != shstrndx ) {
const IELFISection* pStrSec = m_pIELFI->GetSection( shstrndx );
pName = pStrSec->GetData();
if ( 0 != pName ) {
strRet = pName + Convert32Word2Host( m_sh.sh_name, m_pIELFI->GetEncoding() );
}
pStrSec->Release();
}
return strRet;
}
Elf32_Word
ELFISection::GetType() const
{
return Convert32Word2Host( m_sh.sh_type, m_pIELFI->GetEncoding() );
}
Elf32_Word
ELFISection::GetFlags() const
{
return Convert32Word2Host( m_sh.sh_flags, m_pIELFI->GetEncoding() );
}
Elf32_Addr
ELFISection::GetAddress() const
{
return Convert32Addr2Host( m_sh.sh_addr, m_pIELFI->GetEncoding() );
}
Elf32_Word
ELFISection::GetSize() const
{
return Convert32Word2Host( m_sh.sh_size, m_pIELFI->GetEncoding() );
}
Elf32_Word
ELFISection::GetLink() const
{
return Convert32Word2Host( m_sh.sh_link, m_pIELFI->GetEncoding() );
}
Elf32_Word
ELFISection::GetInfo() const
{
return Convert32Word2Host( m_sh.sh_info, m_pIELFI->GetEncoding() );
}
Elf32_Word
ELFISection::GetAddrAlign() const
{
return Convert32Word2Host( m_sh.sh_addralign, m_pIELFI->GetEncoding() );
}
Elf32_Word
ELFISection::GetEntrySize() const
{
return Convert32Word2Host( m_sh.sh_entsize, m_pIELFI->GetEncoding() );
}
const char*
ELFISection::GetData() const
{
Elf32_Word size = GetSize();
if ( 0 == m_data && SHT_NULL != GetType() && SHT_NOBITS != GetType() &&
0 != size ) {
m_data = new char[size];
if ( 0 != m_data ) {
m_pStream->seekg( Convert32Off2Host( m_sh.sh_offset,
m_pIELFI->GetEncoding() ) + m_nFileOffset );
m_pStream->read( m_data, size );
}
}
return m_data;
}
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