Subversion Repositories openrisc_me

//==========================================================================

//

//      console-io.c

//

//      BSP Console Channel Interfaces.

//

//==========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

// 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.

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

// at http://sources.redhat.com/ecos/ecos-license/

// -------------------------------------------

//####ECOSGPLCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    

// Contributors: gthomas

// Date:         1999-10-20

// Purpose:      BSP Console Channel Interfaces.

// Description:  

//               

//

//####DESCRIPTIONEND####

//

//=========================================================================

#include <stdlib.h>

#include <bsp/bsp.h>

#include "bsp_if.h"

static unsigned char __console_ungetc;

void

bsp_console_write(const char *p, int len)

{

    struct bsp_comm_procs *com;

    if ((com = bsp_shared_data->__console_procs) != NULL)

        com->__write(com->ch_data, p, len);

    else

        bsp_debug_write(p, len);

}

int

bsp_console_read(char *p, int len)

{

    struct bsp_comm_procs *com;

    if (len <= 0)

        return 0;

    if ((com = bsp_shared_data->__console_procs) != NULL) {

        if (__console_ungetc) {

            *p = __console_ungetc;

            __console_ungetc = 0;

            return 1;

        }

        return com->__read(com->ch_data, p, len);

    } else

        return bsp_debug_read(p, len);

}

/*#define PRINTABLE_ONLY*/

#ifdef PRINTABLE_ONLY

#include <ctype.h>

#endif /* PRINTABLE_ONLY */

void

bsp_console_putc(char ch)

{

    struct bsp_comm_procs *com;

#ifdef PRINTABLE_ONLY

    if ((!isprint(ch)) && (!isspace(ch)))

        ch = '.';

#endif /* PRINTABLE_ONLY */

    if ((com = bsp_shared_data->__console_procs) != NULL)

        com->__putc(com->ch_data, ch);

    else

        bsp_debug_putc(ch);

}

int

bsp_console_getc(void)

{

    struct bsp_comm_procs *com;

    int    ch;

    if ((com = bsp_shared_data->__console_procs) != NULL) {

        if (__console_ungetc) {

            ch = __console_ungetc;

            __console_ungetc = 0;

            return ch;

        }

        return com->__getc(com->ch_data);

    } else

        return bsp_debug_getc();

}

void

bsp_console_ungetc(char ch)

{

    if (bsp_shared_data->__console_procs != NULL)

        __console_ungetc = (unsigned char)ch;

    else

        bsp_debug_ungetc(ch);

}