strdup.cxx

eCos/RedBoot for勤研ARM AnywhereII(4510) 含全部源代码

//===========================================================================
//
//      strdup.cxx
//
//      BSD strdup() routine
//
//===========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 2004 eCosCentric Ltd.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//===========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     jlarmour
// Contributors:  
// Date:          2004-02-17
// Purpose:     
// Description: 
// Usage:       
//
//####DESCRIPTIONEND####
//
//===========================================================================

// CONFIGURATION

#include <pkgconf/libc_string.h>   // Configuration header

// INCLUDES

#include <cyg/infra/cyg_type.h>    // Common type definitions
#include <cyg/infra/cyg_trac.h>    // Tracing support
#include <cyg/infra/cyg_ass.h>     // Assertion support
#include <string.h>                // Header for this file
#include <stddef.h>                // Compiler definitions such as size_t, NULL etc.
#include <stdlib.h>                // malloc()
#include <cyg/libc/string/stringsupp.hxx>  // Useful string function support and
                                           // prototypes

// EXPORTED SYMBOLS

__externC char *
strdup( const char * ) CYGBLD_ATTRIB_WEAK_ALIAS(__strdup);

// FUNCTIONS

char *
__strdup( const char *s1 )
{
    char *newstring;
    size_t len;

    CYG_REPORT_FUNCNAMETYPE( "__strdup", "returning addr %08x" );
    CYG_REPORT_FUNCARG1( "s1=%08x", s1 );

    CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );

    len = strlen( s1 ) + 1;
    newstring = (char *)malloc( len );
    if ( newstring )
    {
        memcpy( newstring, s1, len );
    } // if

    CYG_REPORT_RETVAL( newstring );
    
    return newstring;
} // __strdup()

// EOF strdup.cxx