bintools/checklib/main.cpp
author lorewang
Wed, 01 Dec 2010 16:05:36 +0800
changeset 715 e0739b8406dd
parent 0 044383f39525
permissions -rw-r--r--
Specify extenal tool with path
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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Entry point for the checklib utility.
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// 
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//
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#include "library/library.h" // For handling libraries of Unix "ar" format.
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#include "object/object.h"   // For handling (parts of) ELF and COFF object files.
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#include <string>
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#include <sstream>
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#include <iostream>
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#include <stdexcept>
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const char SELF_NAME[] = "checklib";
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// Describes what kind of library it is.
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enum libkind_t
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{
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    STDCPP, // Library should be compatible with Symbian C++.
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    SYMCPP  // Library should be compatible with standard C++ (Open Environment).
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};
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// Describes what kind of objects are in the library: ELF or COFF.
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typedef Object_factory::objkind_t objkind_t;
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void _usage_and_exit(int exit_code=EXIT_FAILURE);
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void _error_and_exit(const std::string&, int exit_code=EXIT_FAILURE);
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// These are the ::operator new symbols we are worried about.
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const char* NEW_NAMES[2][4] = {
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    {"_Znwj", "_Znaj", "_ZnwjRKSt9nothrow_t", "_ZnajRKSt9nothrow_t"}, // ELF
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    {"??2@YAPAXI@Z", "??_U@YAPAXI@Z", "??2@YAPAXIABUnothrow_t@std@@@Z", "??_U@YAPAXIABUnothrow_t@std@@@Z"} // COFF
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};
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// Checks whether the object files in the given library references any of the
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// ::operator new functions.
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bool _lib_ref_new(const Library&, objkind_t);
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int main(int argc, const char* argv[])
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{
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    // Do we have any standard module for handling the command-line interface? If
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    // not, see if we can start using getopt or Boost. 
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    if (argc < 4)
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    {
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        _usage_and_exit();
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    }
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    // Command-line options.
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    libkind_t opt_libkind;
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    objkind_t opt_objkind;
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    if ( std::strcmp(argv[1], "stdc++") == 0 )
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    {
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        opt_libkind = STDCPP;
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    }
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    else if ( std::strcmp(argv[1], "symc++") == 0 )
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    {
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        opt_libkind = SYMCPP;
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    }
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    else
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    {
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        _usage_and_exit();
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    }
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    if ( std::strcmp(argv[2], "--elf") == 0 )
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    {
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        opt_objkind = Object_factory::ELF;
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    }
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    else if ( std::strcmp(argv[2], "--coff") == 0 )
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    {
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        opt_objkind = Object_factory::COFF;
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    }
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    else
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    {
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        _usage_and_exit();
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    }
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    try
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    {
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        // Check each library that was given on the command-line.
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        for (int i = 3; i < argc; i++)
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        {
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            Library lib( argv[i] ); // May throw std::runtime_error.
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            // If the library has the tag, we know that it was built to be OE
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            // compatible, and vice versa.
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            bool lib_is_tagged = lib.contains_symbol("____symbian_stdcpp_mmviii");
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            // Handle the two only possible error cases:
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            if ( opt_libkind == STDCPP && !lib_is_tagged && _lib_ref_new(lib, opt_objkind) )
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            {
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                std::ostringstream err_msg;
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                err_msg << "library " << argv[i] <<  " is incompatible with standard C++";
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                _error_and_exit(err_msg.str());
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            }
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            else if ( opt_libkind == SYMCPP && lib_is_tagged && _lib_ref_new(lib, opt_objkind) )
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            {
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                std::ostringstream err_msg;
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                err_msg << "library " << argv[i] <<  " is incompatible with Symbian C++";
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                _error_and_exit(err_msg.str());
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            }
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        }
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    }
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    catch (std::runtime_error& e)
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    {
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        _error_and_exit( e.what() );
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    }
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    return 0;
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}
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void _error_and_exit(const std::string& a_msg, int a_exit_code)
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{
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    std::cerr << SELF_NAME << ": error: " << a_msg << "." << std::endl;
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    std::exit(a_exit_code);
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}
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void _usage_and_exit(int a_exit_code)
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{
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    using std::cout;
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    using std::endl;
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    cout << "usage: " << SELF_NAME << " stdc++ --elf|--coff <lib_list>\n"
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         << "       " << SELF_NAME << " symc++ --elf|--coff <lib_list>" << endl;
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    std::exit(a_exit_code);
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}
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bool _lib_ref_new(const Library& a_lib, objkind_t a_objkind)
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{
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    typedef std::vector< std::pair<const char*, const char*> > T;
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    const T* objects_p = a_lib.get_objects();
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    T::const_iterator p = objects_p->begin();
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    T::const_iterator end_p = objects_p->end();
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    // Iterate over all the objects ...
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    for (; p != end_p; ++p)
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    {
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        std::auto_ptr<Object> obj_p = Object_factory::create(a_objkind, p->first, p->second);
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        // ... And check for references to any ::operator new function.
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        for (unsigned i = 0; i < sizeof(NEW_NAMES[a_objkind]) / sizeof(NEW_NAMES[a_objkind][0]); i++)
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        {
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            if ( obj_p->is_undef(NEW_NAMES[a_objkind][i]) )
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            {
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                return 1;
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            }
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        }
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    }
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    return 0;
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}
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