rtems-rfs-data.h File Reference

RTEMS File System Data. More...

#include <stdint.h>

Go to the source code of this file.

Macros
#define	rtems_rfs_data_ptr(_d)
#define	rtems_rfs_data_get(_d, _t, _o, _s)
#define	rtems_rfs_read_u8(_d)
#define	rtems_rfs_read_u16(_d)
#define	rtems_rfs_read_u32(_d)
#define	rtems_rfs_write_u8(_d, _v)
#define	rtems_rfs_write_u16(_d, _v)
#define	rtems_rfs_write_u32(_d, _v)

Detailed Description

RTEMS File System Data.

RTEMS File System Data.

Access data in the correct byte order for the specific target we are running on.

Todo

Make direct access on matching byte ordered targets.

Macro Definition Documentation

rtems_rfs_data_get

#define rtems_rfs_data_get	(		_d,
			_t,
			_o,
			_s )

Value:

(((_t)(rtems_rfs_data_ptr (_d)[_o])) << (_s))

Helper function to get the data shifted in the correctly sized type.

rtems_rfs_data_ptr

#define rtems_rfs_data_ptr

(

_d

)

Value:

((uint8_t*)(_d))

Helper function to make sure we have a byte pointer.

rtems_rfs_read_u16

#define rtems_rfs_read_u16

(

_d

)

Value:

(rtems_rfs_data_get (_d, uint16_t, 0, 8) | \
 rtems_rfs_data_get (_d, uint16_t, 1, 0))

RFS Read Unsigned 16bit Integer

rtems_rfs_read_u32

#define rtems_rfs_read_u32

(

_d

)

Value:

(rtems_rfs_data_get (_d, uint32_t, 0, 24) | \
 rtems_rfs_data_get (_d, uint32_t, 1, 16) | \
 rtems_rfs_data_get (_d, uint32_t, 2, 8) | \
 rtems_rfs_data_get (_d, uint32_t, 3, 0))

RFS Read Unsigned 32bit Integer

rtems_rfs_read_u8

#define rtems_rfs_read_u8

(

_d

)

Value:

(*rtems_rfs_data_ptr (_d))

RFS Read Unsigned 8bit Integer

rtems_rfs_write_u16

#define rtems_rfs_write_u16	(		_d,
			_v )

Value:

do { \
  rtems_rfs_data_ptr (_d)[0] = (uint8_t)(((uint16_t)(_v)) >> 8); \
  rtems_rfs_data_ptr (_d)[1] = (uint8_t)((_v)); \
} while (0)

RFS Write Unsigned 16bit Integer

rtems_rfs_write_u32

#define rtems_rfs_write_u32	(		_d,
			_v )

Value:

do { \
  rtems_rfs_data_ptr (_d)[0] = (uint8_t)(((uint32_t)(_v)) >> 24); \
  rtems_rfs_data_ptr (_d)[1] = (uint8_t)(((uint32_t)(_v)) >> 16); \
  rtems_rfs_data_ptr (_d)[2] = (uint8_t)(((uint32_t)(_v)) >> 8);  \
  rtems_rfs_data_ptr (_d)[3] = (uint8_t)((uint32_t)(_v)); \
} while (0)

RFS Write Unsigned 32bit Integer

rtems_rfs_write_u8

#define rtems_rfs_write_u8	(		_d,
			_v )

Value:

(*rtems_rfs_data_ptr (_d) = (uint8_t)(_v))

RFS Write Unsigned 8bit Integer