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#ifndef __iosupp_h__
#define __iosupp_h__
#include <reent.h>
enum {
STD_IN,
STD_OUT,
STD_ERR,
STD_MAX = 16
};
#define _SHIFTL(v, s, w) \
((unsigned int) (((unsigned int)(v) & ((0x01 << (w)) - 1)) << (s)))
#define _SHIFTR(v, s, w) \
((unsigned int)(((unsigned int)(v) >> (s)) & ((0x01 << (w)) - 1)))
typedef struct {
const char *name;
int (*open_r)(struct _reent *r,const char *path,int flags,int mode);
int (*close_r)(struct _reent *r,int fd);
int (*write_r)(struct _reent *r,int fd,const char *ptr,int len);
int (*read_r)(struct _reent *r,int fd,char *ptr,int len);
int (*seek_r)(struct _reent *r,int fd,int pos,int dir);
int (*stat_r)(struct _reent *r,int fd,struct stat *st);
} devoptab_t;
extern const devoptab_t *devoptab_list[];
int AddDevice( const devoptab_t* device);
#endif
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