/*    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.    ***************************************************************************    See http://www.FreeRTOS.org for documentation, latest information, license    and contact details.  Please ensure to read the configuration and relevant    port sections of the online documentation.    ****************************************************************************//* ------------------------ 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 portCHAR * const pcString,                            unsigned portSHORT usStringLength );/* ------------------------ Start implementation -------------------------- */void_exit( int status ){    asm volatile    ( "halt" );    for( ;; );}pid_tgetpid( void ){    return 0;}intkill( pid_t pid, int sig ){    _exit( 0 );}intclose( int fd ){    return 0;}intfstat( int fd, struct stat *buf ){    buf->st_mode = S_IFCHR;    buf->st_blksize = 0;    return 0;}ssize_twrite( int fd, const void *buf, size_t nbytes ){    ssize_t res = nbytes;    extern xComPortHandle xSTDComPort;    switch ( fd )    {        case STDERR_FILENO:            vSerialPutStringNOISR( xSTDComPort,                                   ( const signed portCHAR * const )buf,                                   ( unsigned portSHORT )nbytes );            break;        case STDOUT_FILENO:            vSerialPutString( xSTDComPort,                              ( const signed portCHAR * const)buf,                              ( unsigned portSHORT )nbytes );            break;        default:            errno = EIO;            res = -1;            break;    }    return res;}intread( int fd, void *buf, size_t nbytes ){    switch ( fd )    {        default:            errno = EIO;            return -1;    }}intisatty( int fd ){    return 0;}off_tlseek( 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;}