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6dc2ca62 MD |
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 | ||
08228826 MD |
17 | static inline |
18 | uint64_t ctf_bitfield_unsigned_read(const uint8_t *ptr, | |
19 | unsigned long start, unsigned long len, | |
20 | int byte_order) | |
21 | { | |
22 | uint64_t v; | |
23 | ||
24 | if (byte_order == LITTLE_ENDIAN) | |
25 | ctf_bitfield_read_le(ptr, start, len, &v); | |
26 | else | |
27 | ctf_bitfield_read_be(ptr, start, len, &v); | |
28 | return v; | |
29 | } | |
30 | ||
31 | static inline | |
32 | int64_t ctf_bitfield_signed_read(const uint8_t *ptr, | |
33 | unsigned long start, unsigned long len, | |
34 | int byte_order) | |
35 | { | |
36 | int64_t v; | |
37 | ||
38 | if (byte_order == LITTLE_ENDIAN) | |
39 | ctf_bitfield_read_le(ptr, start, len, &v); | |
40 | else | |
41 | ctf_bitfield_read_be(ptr, start, len, &v); | |
42 | return v; | |
43 | } | |
6dc2ca62 MD |
44 | |
45 | static inline | |
46 | size_t ctf_bitfield_unsigned_write(uint8_t *ptr, | |
47 | unsigned long start, unsigned long len, | |
48 | int byte_order, uint64_t v) | |
49 | { | |
50 | if (!ptr) | |
51 | goto end; | |
52 | if (byte_order == LITTLE_ENDIAN) | |
53 | ctf_bitfield_write_le(ptr, start, len, v); | |
54 | else | |
55 | ctf_bitfield_write_be(ptr, start, len, v); | |
56 | end: | |
57 | return len; | |
58 | } | |
59 | ||
60 | static inline | |
61 | size_t ctf_bitfield_signed_write(uint8_t *ptr, | |
62 | unsigned long start, unsigned long len, | |
63 | int byte_order, int64_t v) | |
64 | { | |
65 | if (!ptr) | |
66 | goto end; | |
67 | if (byte_order == LITTLE_ENDIAN) | |
68 | ctf_bitfield_write_le(ptr, start, len, v); | |
69 | else | |
70 | ctf_bitfield_write_be(ptr, start, len, v); | |
71 | end: | |
72 | return len; | |
73 | } | |
74 | ||
75 | #endif /* _CTF_TYPES_BITFIELD_H */ |