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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 | * | |
de0ba614 | 9 | * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
6dc2ca62 | 10 | * |
de0ba614 MD |
11 | * This library is free software; you can redistribute it and/or |
12 | * modify it under the terms of the GNU Lesser General Public | |
13 | * License as published by the Free Software Foundation; either | |
14 | * version 2.1 of the License, or (at your option) any later version. | |
15 | * | |
16 | * This library is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * Lesser General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU Lesser General Public | |
22 | * License along with this library; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
6dc2ca62 MD |
24 | */ |
25 | ||
26 | #include <ctf/bitfield.h> | |
27 | #include <endian.h> | |
28 | ||
08228826 | 29 | static inline |
de0ba614 | 30 | uint64_t ctf_bitfield_unsigned_read(const unsigned char *ptr, |
08228826 MD |
31 | unsigned long start, unsigned long len, |
32 | int byte_order) | |
33 | { | |
34 | uint64_t v; | |
35 | ||
36 | if (byte_order == LITTLE_ENDIAN) | |
37 | ctf_bitfield_read_le(ptr, start, len, &v); | |
38 | else | |
39 | ctf_bitfield_read_be(ptr, start, len, &v); | |
40 | return v; | |
41 | } | |
42 | ||
43 | static inline | |
de0ba614 | 44 | int64_t ctf_bitfield_signed_read(const unsigned char *ptr, |
08228826 MD |
45 | unsigned long start, unsigned long len, |
46 | int byte_order) | |
47 | { | |
48 | int64_t v; | |
49 | ||
50 | if (byte_order == LITTLE_ENDIAN) | |
51 | ctf_bitfield_read_le(ptr, start, len, &v); | |
52 | else | |
53 | ctf_bitfield_read_be(ptr, start, len, &v); | |
54 | return v; | |
55 | } | |
6dc2ca62 MD |
56 | |
57 | static inline | |
de0ba614 | 58 | size_t ctf_bitfield_unsigned_write(unsigned char *ptr, |
6dc2ca62 MD |
59 | unsigned long start, unsigned long len, |
60 | int byte_order, uint64_t v) | |
61 | { | |
62 | if (!ptr) | |
63 | goto end; | |
64 | if (byte_order == LITTLE_ENDIAN) | |
65 | ctf_bitfield_write_le(ptr, start, len, v); | |
66 | else | |
67 | ctf_bitfield_write_be(ptr, start, len, v); | |
68 | end: | |
69 | return len; | |
70 | } | |
71 | ||
72 | static inline | |
de0ba614 | 73 | size_t ctf_bitfield_signed_write(unsigned char *ptr, |
6dc2ca62 MD |
74 | unsigned long start, unsigned long len, |
75 | int byte_order, int64_t v) | |
76 | { | |
77 | if (!ptr) | |
78 | goto end; | |
79 | if (byte_order == LITTLE_ENDIAN) | |
80 | ctf_bitfield_write_le(ptr, start, len, v); | |
81 | else | |
82 | ctf_bitfield_write_be(ptr, start, len, v); | |
83 | end: | |
84 | return len; | |
85 | } | |
86 | ||
87 | #endif /* _CTF_TYPES_BITFIELD_H */ |