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1 | #ifndef _CTF_TYPES_BITFIELD_H |
2 | #define _CTF_TYPES_BITFIELD_H | |
3 | ||
4 | /* | |
5 | * Common Trace Format | |
6 | * | |
7 | * Bitfields read/write functions. | |
8 | * | |
9 | * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
10 | * | |
11 | * Dual LGPL v2.1/GPL v2 license. | |
12 | */ | |
13 | ||
14 | #include <ctf/bitfield.h> | |
15 | #include <endian.h> | |
16 | ||
17 | /* | |
18 | * ctf_bitfield_unsigned_read and ctf_bitfield_signed_read are defined by | |
19 | * bitfield.h. | |
20 | * | |
21 | * The write primitives below are provided as wrappers over | |
22 | * ctf_bitfield_write_le and ctf_bitfield_write_be to specify per-byte write of | |
23 | * signed/unsigned integers through a standard API. | |
24 | */ | |
25 | ||
26 | static inline | |
27 | size_t ctf_bitfield_unsigned_write(uint8_t *ptr, | |
28 | unsigned long start, unsigned long len, | |
29 | int byte_order, uint64_t v) | |
30 | { | |
31 | if (!ptr) | |
32 | goto end; | |
33 | if (byte_order == LITTLE_ENDIAN) | |
34 | ctf_bitfield_write_le(ptr, start, len, v); | |
35 | else | |
36 | ctf_bitfield_write_be(ptr, start, len, v); | |
37 | end: | |
38 | return len; | |
39 | } | |
40 | ||
41 | static inline | |
42 | size_t ctf_bitfield_signed_write(uint8_t *ptr, | |
43 | unsigned long start, unsigned long len, | |
44 | int byte_order, int64_t v) | |
45 | { | |
46 | if (!ptr) | |
47 | goto end; | |
48 | if (byte_order == LITTLE_ENDIAN) | |
49 | ctf_bitfield_write_le(ptr, start, len, v); | |
50 | else | |
51 | ctf_bitfield_write_be(ptr, start, len, v); | |
52 | end: | |
53 | return len; | |
54 | } | |
55 | ||
56 | #endif /* _CTF_TYPES_BITFIELD_H */ |