#ifndef __UCOS_DEV_H__
#define __UCOS_DEV_H__

#include <sys/types.h>
#include <reent.h>

typedef struct sys_table_t
{
	int (*fork_r)(struct _reent *r);
	int (*kill_r)(struct _reent *r, int pid, int sig);
	int (*execve_r)(struct _reent *r, const char *, char *const *, char *const *);
	int (*wait_r)(struct _reent *r, int *);
	void (*exit)(int ret);
	int (*gettimeofday_r)(struct _reent *r, struct timeval *tp, void *tzp);
	_CLOCK_T_ (*times_r)(struct _reent *, struct tms *);
	int (*getpid_r)(struct _reent *r);
	int (*creat_r)(struct _reent *r, const char *path, int mode);
	void* (*sbrk_r)(struct _reent *r, ptrdiff_t ptrdiff);
	int (*isatty_r)(struct _reent *r, int fd);
} sys_table_t;

extern sys_table_t *g_p_sys_table;


typedef struct io_device_table_t
{

	const char *name;
	void *p_internals;

	int  (*open_r  )( struct _reent *r, const char *path, int flags, int mode );

	int  (*close_r )( struct _reent *r, int fd );

	long (*write_r )( struct _reent *r, int fd, const char *ptr, int len );

	long (*read_r  )( struct _reent *r, int fd, char *ptr, int len );

	off_t (*lseek_r) (struct _reent *r, int fd,  off_t offset, int whence);

	int (*fstat_r) (struct _reent *r, int fd, struct stat *buf);

} io_device_table_t;

extern io_device_table_t *g_device_tables[];

#endif /* __UCOS_DEV_H__ */