--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bintools/checklib/object/elf_object.cpp	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,92 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#include "object.h"
+
+#include "elf/elf_file_header.h"
+#include "elf/elf_section_header.h"
+#include "elf/elf_symbol.h"
+#include "elf/elf_string_table.h"
+
+#include <algorithm>
+#include <functional>
+
+Elf_object::Elf_object(const char* p1, const char* p2)
+{
+    const char* first_p = p1;
+    const char* last_p = p2;
+
+    elf::File_header fh(first_p, last_p);
+
+    const char* sh_table_p = first_p + fh.get_shoff();
+
+    const char* p = sh_table_p;
+
+    unsigned D = fh.get_shentsize();
+    unsigned N = fh.get_shnum();
+
+    // Iterate over the section header table.
+    for (unsigned i = 0; i < N; i++, p += D )
+    {
+        elf::Section_header sh(p, last_p);
+
+        if ( sh.is_type_symtab() ) // We've found the symbol table's section header.
+        {
+            // Locate the string table.
+            elf::Section_header strtab_sh( sh_table_p + D*sh.get_link(), last_p );
+            elf::String_table strtab(first_p + strtab_sh.get_offset(), strtab_sh.get_size() );
+
+            unsigned D = sh.get_entsize();  // The difference between two symbol pointers.
+            unsigned N = sh.get_size() / D; // The number of symbols.
+
+            const char* p = first_p + sh.get_offset();
+
+            // Iterate over all symbols.
+            for (unsigned i = 0; i < N; i++, p += D)
+            {
+                const elf::Symbol s(p);
+
+                if (s.get_shndx() == 0)
+                {
+                    m_undef_symbols.push_back( strtab.get_string( s.get_name() ) );
+                }
+            }
+
+            break; // We're only interested in the symbol table ...
+        }
+    }
+}
+
+Elf_object::~Elf_object() {}
+
+bool Elf_object::is_undef(const char a_sym[]) const
+{
+    using std::find_if;
+    using std::not1;
+    using std::bind2nd;
+    using std::ptr_fun;
+    using std::strcmp;
+
+    typedef std::vector<const char*> T;
+
+    T::const_iterator beg_p = m_undef_symbols.begin();
+    T::const_iterator end_p = m_undef_symbols.end();
+
+    // "STL considered harmful."
+    T::const_iterator pos = find_if( beg_p, end_p, not1(bind2nd( ptr_fun(strcmp), a_sym)) );
+
+    return (pos != end_p);
+}
+