RTEMS: cpukit/include/rtems/rfs/rtems-rfs-data.h File Reference

| RTEMS 5.4-rc2

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rtems-rfs-data.h File Reference
IO Library » File System Types and Mount » RTEMS File System Group Management

RTEMS File System Data. More...

`#include <stdint.h>`

Go to the source code of this file.

## Macros
#define | rtems_rfs_data_ptr(_d) ((uint8_t*)(_d))
#define | rtems_rfs_data_get(_d, _t, _o, _s) (((_t)(rtems_rfs_data_ptr (_d)[_o])) << (_s))
#define | rtems_rfs_read_u8(_d) (*rtems_rfs_data_ptr (_d))
#define | rtems_rfs_read_u16(_d)
#define | rtems_rfs_read_u32(_d)
#define | rtems_rfs_write_u8(_d, _v) (*rtems_rfs_data_ptr (_d) = (uint8_t)(_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
| ) |  | (((_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 | ) | ((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))
rtems_rfs_data_get
#define rtems_rfs_data_get(_d, _t, _o, _s)
Definition: rtems-rfs-data.h:38

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

RFS Write Unsigned 8bit Integer