source: rtems/c/src/lib/libbsp/h8300/h8sim/include/bsp.h @ d281de9

/**
  *  @file
  *
  *  @ingroup h8300_bsp
  *
  *  @brief h8 simulator definitions in gdb
  */

/*  bsp.h
 *
 *  This include file contains some definitions specific to the
 *  h8 simulator in gdb.
 *
 *  COPYRIGHT (c) 1989-1999.
 *  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.rtems.com/license/LICENSE.
 */

#ifndef _BSP_H
#define _BSP_H

#ifdef __cplusplus
extern "C" {
#endif

#include <bspopts.h>
#include <bsp/default-initial-extension.h>

#include <rtems.h>
#include <rtems/iosupp.h>
#include <rtems/console.h>
#include <rtems/clockdrv.h>

/**
  *  @defgroup h8300_bsp Clock Tick Support
  *
  *  @ingroup h8300_h8sim
  *
  *  @brief Clock Tick Support Package
  */

Thread clock_driver_sim_idle_body(uintptr_t);
#define BSP_IDLE_TASK_BODY clock_driver_sim_idle_body

/*
 *  Simple spin delay in microsecond units for device drivers.
 *  This is very dependent on the clock speed of the target.
 */

#define rtems_bsp_delay( microseconds ) \
  { register uint32_t         _delay=(microseconds); \
    register uint32_t         _tmp = 0; /* initialized to avoid warning */ \
    __asm__ volatile( "0: \
                     remo      3,31,%0 ; \
                     cmpo      0,%0 ; \
                     subo      1,%1,%1 ; \
                     cmpobne.t 0,%1,0b " \
                  : "=d" (_tmp), "=d" (_delay) \
                  : "0"  (_tmp), "1"  (_delay) ); \
  }

#ifdef __cplusplus
}
#endif

#endif