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#ifndef __LINUX_RWSEM_H__
#define __LINUX_RWSEM_H__
 
// eCos does not have the concept of a read/write semaphore. So just
// map them onto normal semaphores and hope we don't deadlock
// somewhere.
 
#include <asm/semaphore.h>
 
struct rw_semaphore;
 
#define down_read(sem) cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem)
#define down_read_trylock(sem) cyg_drv_mutex_trylock((cyg_drv_mutex_t *)sem)
#define down_write(sem) cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem)
#define down_write_trylock(sem) cyg_drv_mutex_trylock((cyg_drv_mutex_t *)sem)
#define up_read(sem) cyg_drv_mutex_unlock((cyg_drv_mutex_t *)sem)
#define up_write(sem) cyg_drv_mutex_unlock((cyg_drv_mutex_t *)sem)
#define downgrade_write(sem) 
 
#endif // __LINUX_RWSEM_H__