rtems-rfs-data.h File Reference

RTEMS File System Data. More...

#include <stdint.h>

Include dependency graph for rtems-rfs-data.h:

Go to the source code of this file.

Macros
#define	rtems_rfs_data_ptr(_d)   ((uint8_t*)(_d))
	Helper function to make sure we have a byte pointer.
#define	rtems_rfs_data_get(_d, _t, _o, _s)   (((_t)(rtems_rfs_data_ptr (_d)[_o])) << (_s))
	Helper function to get the data shifted in the correctly sized type.
#define	rtems_rfs_read_u8(_d)   (*rtems_rfs_data_ptr (_d))
	RFS Read Unsigned 8bit Integer.
#define	rtems_rfs_read_u16(_d)
	RFS Read Unsigned 16bit Integer. More...
#define	rtems_rfs_read_u32(_d)
	RFS Read Unsigned 32bit Integer. More...
#define	rtems_rfs_write_u8(_d, _v)   (*rtems_rfs_data_ptr (_d) = (uint8_t)(_v))
	RFS Write Unsigned 8bit Integer.
#define	rtems_rfs_write_u16(_d, _v)
	RFS Write Unsigned 16bit Integer. More...
#define	rtems_rfs_write_u32(_d, _v)
	RFS Write Unsigned 32bit Integer. More...

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_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_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.