Subversion Repositories openrisc_2011-10-31

/* sim-time.c -- stubs so clock can be linked in.

 *

 * Copyright (c) 2008 Anthony Green

 *

 * The authors hereby grant permission to use, copy, modify, distribute,

 * and license this software and its documentation for any purpose, provided

 * that existing copyright notices are retained in all copies and that this

 * notice is included verbatim in any distributions. No written agreement,

 * license, or royalty fee is required for any of the authorized uses.

 * Modifications to this software may be copyrighted by their authors

 * and need not follow the licensing terms described here, provided that

 * the new terms are clearly indicated on the first page of each file where

 * they apply.

 */

#include <errno.h>

#include <sys/time.h>

#include <sys/times.h>

#include "glue.h"

/*

 * time -- simulator interface to return current time in seconds.

 */

__asm__ ("\

        .text\n\

        .globl  _sim_time\n\

        .type   _sim_time,@function\n\

_sim_time:\n\

        bad\n                   \

        ret\n\

.Lsim:\n\

        .size   _sim_time,.Lsim-_sim_time");

extern time_t _sim_time (void) __asm__("_sim_time");

/*

 * time -- return current time in seconds.

 */

time_t

_DEFUN (time, time (t),

        time_t *t)

{

  time_t ret = _sim_time ();

  if (t)

    *t = ret;

  return ret;

}

/*

 * _times -- no clock, so return an error.

 */

int

_DEFUN (_times, _times (buf),

        struct tms *buf)

{

  errno = EINVAL;

  return (-1);

}

/*

 * _gettimeofday -- implement in terms of time, which means we can't return the

 * microseconds.

 */

int

_DEFUN (_gettimeofday, _gettimeofday (tv, tz),

        struct timeval *tv _AND

        void *tzvp)

{

  struct timezone *tz = tzvp;

  if (tz)

    tz->tz_minuteswest = tz->tz_dsttime = 0;

  tv->tv_usec = 0;

  tv->tv_sec = _sim_time ();

  return 0;

}