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/*

 *  This file contains the hardware specific portions of the TTY driver

 *  for the simulators stdin/out.

 *

 *  Logic based on newlib-1.8.2/newlib/libc/sys/sh/syscalls.c

 *

 *  COPYRIGHT (c) 1989-2000.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  console-io.c,v 1.1 2001/01/29 15:33:34 joel Exp

 */

#include <bsp.h>

#include <rtems/libio.h>

#include <stdlib.h>

#include <assert.h>

#define SYS_exit        1

#define SYS_read        3

#define SYS_write       4

int errno ;

extern int __trap34(int, int, void*, int );

/*

 *  console_initialize_hardware

 *

 *  This routine initializes the console hardware.

 *

 */

void console_initialize_hardware(void)

{

  return;

}

/*

 *  console_outbyte_polled

 *

 *  This routine transmits a character using polling.

 */

void console_outbyte_polled(

  int  port,

  char ch

)

{

  __trap34 (SYS_write, 1, &ch, 1);

  return;

}

/*

 *  console_inbyte_nonblocking

 *

 *  This routine polls for a character.

 */

int console_inbyte_nonblocking(

  int port

)

{

  unsigned char c;

  return __trap34 (SYS_read, 0, &c, 1);

}

/* XXX wrong place for this */

_sys_exit (n)

{

  return __trap34 (SYS_exit, n, 0, 0);

}