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

| RTEMS 5.4-rc2

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rtems-rfs-data.h
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1
16/*
17 * COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
18 *
19 * The license and distribution terms for this file may be
20 * found in the file LICENSE in this distribution or at
21 * http://www.rtems.org/license/LICENSE.
22 */
23
24
25#if !defined (_RTEMS_RFS_DATA_H_)
26#define _RTEMS_RFS_DATA_H_
27
28#include <stdint.h>
29
33#define rtems_rfs_data_ptr(_d) ((uint8_t*)(_d))
34
38#define rtems_rfs_data_get(_d, _t, _o, _s) \
39 (((_t)(rtems_rfs_data_ptr (_d)[_o])) << (_s))
40
44#define rtems_rfs_read_u8(_d) \
45 (*rtems_rfs_data_ptr (_d))
46
50#define rtems_rfs_read_u16(_d) \
51 (rtems_rfs_data_get (_d, uint16_t, 0, 8) | \
52 rtems_rfs_data_get (_d, uint16_t, 1, 0))
53
57#define rtems_rfs_read_u32(_d) \
58 (rtems_rfs_data_get (_d, uint32_t, 0, 24) | \
59 rtems_rfs_data_get (_d, uint32_t, 1, 16) | \
60 rtems_rfs_data_get (_d, uint32_t, 2, 8) | \
61 rtems_rfs_data_get (_d, uint32_t, 3, 0))
62
66#define rtems_rfs_write_u8(_d, _v) \
67 (*rtems_rfs_data_ptr (_d) = (uint8_t)(_v))
68
72#define rtems_rfs_write_u16(_d, _v) \
73 do { \
74 rtems_rfs_data_ptr (_d)[0] = (uint8_t)(((uint16_t)(_v)) >> 8); \
75 rtems_rfs_data_ptr (_d)[1] = (uint8_t)((_v)); \
76 } while (0)
77
81#define rtems_rfs_write_u32(_d, _v) \
82 do { \
83 rtems_rfs_data_ptr (_d)[0] = (uint8_t)(((uint32_t)(_v)) >> 24); \
84 rtems_rfs_data_ptr (_d)[1] = (uint8_t)(((uint32_t)(_v)) >> 16); \
85 rtems_rfs_data_ptr (_d)[2] = (uint8_t)(((uint32_t)(_v)) >> 8); \
86 rtems_rfs_data_ptr (_d)[3] = (uint8_t)((uint32_t)(_v)); \
87 } while (0)
88
89#endif