projects / babeltrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |