2 * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file portable_io.h Inline functions for binary IO. */
9 static inline uint64_t read_portable(unsigned bits, const void *buf)
12 int i, num_bytes = bits / 8;
13 const uint8_t *p = (typeof(p))buf;
15 for (i = 0; i < num_bytes; i++) {
16 unsigned char c = p[i];
17 ret += ((uint64_t)c << (8 * i));
22 static inline uint64_t read_portable_be(unsigned bits, const void *buf)
25 int i, num_bytes = bits / 8;
26 const uint8_t *p = (typeof(p))buf;
28 for (i = 0; i < num_bytes; i++) {
29 unsigned char c = p[i];
30 ret += ((uint64_t)c << (8 * (num_bytes - i - 1)));
35 static inline uint64_t read_u64(const void *buf)
37 return read_portable(64, buf);
40 static inline uint32_t read_u32(const void *buf)
42 return read_portable(32, buf);
45 static inline uint16_t read_u16(const void *buf)
47 return read_portable(16, buf);
50 static inline uint8_t read_u8(const void *buf)
52 return read_portable(8, buf);
55 static inline uint64_t read_u64_be(const void *buf)
57 return read_portable_be(64, buf);
60 static inline uint32_t read_u32_be(const void *buf)
62 return read_portable_be(32, buf);
65 static inline uint16_t read_u16_be(const void *buf)
67 return read_portable_be(16, buf);
70 static inline void write_portable(unsigned bits, char *buf, uint64_t val)
72 int i, num_bytes = bits / 8;
73 uint8_t *p = (typeof(p))buf;
75 for (i = 0; i < num_bytes; i++) {
81 static inline void write_portable_be(unsigned bits, char *buf, uint64_t val)
83 int i, num_bytes = bits / 8;
84 uint8_t *p = (typeof(p))buf;
86 for (i = 0; i < num_bytes; i++) {
87 p[num_bytes - i - 1] = val & 0xff;
92 static inline void write_u64(void *buf, uint64_t val)
94 write_portable(64, buf, val);
97 static inline void write_u32(void *buf, uint32_t val)
99 write_portable(32, buf, (uint64_t) val);
102 static inline void write_u16(void *buf, uint16_t val)
104 write_portable(16, buf, (uint64_t) val);
107 static inline void write_u8(void *buf, uint8_t val)
109 write_portable(8, buf, (uint64_t) val);
112 static inline void write_u64_be(void *buf, uint64_t val)
114 write_portable_be(64, buf, val);
117 static inline void write_u32_be(void *buf, uint32_t val)
119 write_portable_be(32, buf, (uint64_t) val);
122 static inline void write_u16_be(void *buf, uint16_t val)
124 write_portable_be(16, buf, (uint64_t) val);