1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "object.h"

    17 

    18 #include "coff/coff_file_header.h"

    19 #include "coff/coff_symbol.h"

    20 #include "coff/coff_string_table.h"

    21 

    22 #include <algorithm>

    23 #include <functional>

    24 #include <cstring>

    25 

    26 Coff_object::Coff_object(const char* p1, const char* p2)

    27 {

    28     coff::File_header fh(p1, p2);

    29 

    30     unsigned nr_of_syms = fh.get_symcount();

    31     unsigned sym_size = coff::Symbol::get_entrysize();

    32 

    33     // Pointer to the first entry in the symbol table.

    34     p1 +=  fh.get_symtab_offset();

    35 

    36     // The string table is locates directly after the symbol table.

    37     coff::String_table strtab( p1 + nr_of_syms * sym_size);

    38 

    39     // Iterate over the whole symbol table.

    40     for (unsigned i = 0; i < nr_of_syms; i++, p1 += sym_size)

    41     {

    42         coff::Symbol s(p1, p2);

    43 

    44         // A symbol can have auxiliary entries that follows it.

    45         unsigned aux_count = s.get_auxcount();

    46 

    47         p1 += sym_size * aux_count;

    48         i += aux_count;

    49 

    50         if ( s.get_section() == 0 ) // If symbol is undefined ...

    51         {

    52             m_undef_symbols.push_back( strtab.get_string( s.get_name() ) );

    53         }

    54     }

    55 }

    56 

    57 Coff_object::~Coff_object() {}

    58 

    59 bool Coff_object::is_undef(const char a_sym[]) const

    60 {

    61     using std::find_if;

    62     using std::not1;

    63     using std::bind2nd;

    64     using std::ptr_fun;

    65     using std::strcmp;

    66 

    67     typedef std::vector<const char*> T;

    68 

    69     T::const_iterator beg_p = m_undef_symbols.begin();

    70     T::const_iterator end_p = m_undef_symbols.end();

    71 

    72     T::const_iterator pos = find_if( beg_p, end_p, not1(bind2nd( ptr_fun(strcmp), a_sym)) );

    73 

    74     return (pos != end_p);

    75 }

    76