source: rtems/c/src/lib/libbsp/m32r/m32rsim/include/bsp.h @ 9b4422a2

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

/* support for simulated clock tick */
Thread clock_driver_sim_idle_body(uintptr_t);
#define BSP_IDLE_TASK_BODY clock_driver_sim_idle_body

/* Trap support interface from Newlib 1.16.0 */
#define SYS_exit        1
#define SYS_open        2
#define SYS_close       3
#define SYS_read        4
#define SYS_write       5
#define SYS_lseek       6
#define SYS_unlink      7
#define SYS_getpid      8
#define SYS_kill        9
#define SYS_fstat       10

int __trap0 (int function, int p1, int p2, int p3, struct _reent *r);

#define TRAP0(f, p1, p2, p3) \
  __trap0 (f, (int) (p1), (int) (p2), (int) (p3), _REENT)

/*
 *  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