Subversion Repositories openrisc_2011-10-31

/*

    FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.

    This file is part of the FreeRTOS distribution.

    FreeRTOS 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 of the License, or

    (at your option) any later version.

    FreeRTOS 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 FreeRTOS; if not, write to the Free Software

    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    A special exception to the GPL can be applied should you wish to distribute

    a combined work that includes FreeRTOS, without being obliged to provide

    the source code for any proprietary components.  See the licensing section

    of http://www.FreeRTOS.org for full details of how and when the exception

    can be applied.

    ***************************************************************************

    ***************************************************************************

    *                                                                         *

    * Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *

        *                                                                         *

        * This is a concise, step by step, 'hands on' guide that describes both   *

        * general multitasking concepts and FreeRTOS specifics. It presents and   *

        * explains numerous examples that are written using the FreeRTOS API.     *

        * Full source code for all the examples is provided in an accompanying    *

        * .zip file.                                                              *

    *                                                                         *

    ***************************************************************************

    ***************************************************************************

        Please ensure to read the configuration and relevant port sections of the

        online documentation.

        http://www.FreeRTOS.org - Documentation, latest information, license and

        contact details.

        http://www.SafeRTOS.com - A version that is certified for use in safety

        critical systems.

        http://www.OpenRTOS.com - Commercial support, development, porting,

        licensing and training services.

*/

/* ------------------------ System includes ------------------------------- */

#include <sys/types.h>

#include <sys/stat.h>

#include <unistd.h>

#include <errno.h>

/* ------------------------ FreeRTOS includes ----------------------------- */

#include <FreeRTOS.h>

#include <serial.h>

/* ------------------------ Prototypes ------------------------------------ */

void vSerialPutStringNOISR( xComPortHandle pxPort,

                            const signed char * const pcString,

                            unsigned short usStringLength );

/* ------------------------ Start implementation -------------------------- */

void

_exit( int status )

{

    asm volatile    ( "halt" );

    for( ;; );

}

pid_t

getpid( void )

{

    return 0;

}

int

kill( pid_t pid, int sig )

{

    _exit( 0 );

}

int

close( int fd )

{

    return 0;

}

int

fstat( int fd, struct stat *buf )

{

    buf->st_mode = S_IFCHR;

    buf->st_blksize = 0;

    return 0;

}

ssize_t

write( int fd, const void *buf, size_t nbytes )

{

    ssize_t res = nbytes;

    extern xComPortHandle xSTDComPort;

    switch ( fd )

    {

        case STDERR_FILENO:

            vSerialPutStringNOISR( xSTDComPort,

                                   ( const signed char * const )buf,

                                   ( unsigned short )nbytes );

            break;

        case STDOUT_FILENO:

            vSerialPutString( xSTDComPort,

                              ( const signed char * const)buf,

                              ( unsigned short )nbytes );

            break;

        default:

            errno = EIO;

            res = -1;

            break;

    }

    return res;

}

int

read( int fd, void *buf, size_t nbytes )

{

    switch ( fd )

    {

        default:

            errno = EIO;

            return -1;

    }

}

int

isatty( int fd )

{

    return 0;

}

off_t

lseek( int fd, off_t offset, int whence )

{

    errno = EIO;

    return ( off_t ) - 1;

}

extern char     _end[];

char           *heap_ptr;

void           *

sbrk( ptrdiff_t nbytes )

{

    char           *base;

    if( !heap_ptr )

        heap_ptr = ( char * )&_end;

    base = heap_ptr;

    heap_ptr += nbytes;

    return base;

}