| 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 | 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 | } |
| 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 */ |