30#ifndef TINS_ENDIANNESS_H
31#define TINS_ENDIANNESS_H
34#include <tins/macros.h>
37 #include <sys/types.h>
38 #define TINS_IS_LITTLE_ENDIAN (BYTE_ORDER == LITTLE_ENDIAN)
39 #define TINS_IS_BIG_ENDIAN (BYTE_ORDER == BIG_ENDIAN)
41 #include <sys/endian.h>
42 #define TINS_IS_LITTLE_ENDIAN (_BYTE_ORDER == _LITTLE_ENDIAN)
43 #define TINS_IS_BIG_ENDIAN (_BYTE_ORDER == _BIG_ENDIAN)
47 #define TINS_IS_LITTLE_ENDIAN 1
48 #define TINS_IS_BIG_ENDIAN 0
51 #define TINS_IS_LITTLE_ENDIAN (__BYTE_ORDER == __LITTLE_ENDIAN)
52 #define TINS_IS_BIG_ENDIAN (__BYTE_ORDER == __BIG_ENDIAN)
57 #define TINS_BYTE_SWAP_16(data) _byteswap_ushort(data)
58 #define TINS_BYTE_SWAP_32(data) _byteswap_ulong(data)
59 #define TINS_BYTE_SWAP_64(data) _byteswap_uint64(data)
60#elif defined(TINS_HAVE_GCC_BUILTIN_SWAP)
61 #define TINS_BYTE_SWAP_16(data) __builtin_bswap16(data)
62 #define TINS_BYTE_SWAP_32(data) __builtin_bswap32(data)
63 #define TINS_BYTE_SWAP_64(data) __builtin_bswap64(data)
65 #define TINS_NO_BYTE_SWAP_INTRINSICS
77inline uint8_t do_change_endian(uint8_t data) {
86inline uint16_t do_change_endian(uint16_t data) {
87 #ifdef TINS_NO_BYTE_SWAP_INTRINSICS
88 return ((data & 0xff00) >> 8) | ((data & 0x00ff) << 8);
90 return TINS_BYTE_SWAP_16(data);
99inline uint32_t do_change_endian(uint32_t data) {
100 #ifdef TINS_NO_BYTE_SWAP_INTRINSICS
101 return (((data & 0xff000000) >> 24) | ((data & 0x00ff0000) >> 8) |
102 ((data & 0x0000ff00) << 8) | ((data & 0x000000ff) << 24));
104 return TINS_BYTE_SWAP_32(data);
113 inline uint64_t do_change_endian(uint64_t data) {
114 #ifdef TINS_NO_BYTE_SWAP_INTRINSICS
115 return (((uint64_t)(do_change_endian((uint32_t)(data & 0xffffffff))) << 32) |
116 (do_change_endian(((uint32_t)(data >> 32)))));
118 return TINS_BYTE_SWAP_64(data);
128struct conversion_dispatch_helper {
129 static T dispatch(T data) {
130 return do_change_endian(data);
136struct conversion_dispatcher;
139struct conversion_dispatcher<sizeof(uint8_t)>
140:
public conversion_dispatch_helper<uint8_t> { };
143struct conversion_dispatcher<sizeof(uint16_t)>
144:
public conversion_dispatch_helper<uint16_t> { };
147struct conversion_dispatcher<sizeof(uint32_t)>
148:
public conversion_dispatch_helper<uint32_t> { };
151struct conversion_dispatcher<sizeof(uint64_t)>
152:
public conversion_dispatch_helper<uint64_t> { };
166 inline T change_endian(T data) {
167 return conversion_dispatcher<
sizeof(T)>::dispatch(data);
170#if TINS_IS_LITTLE_ENDIAN
177 inline T host_to_be(T data) {
178 return change_endian(data);
189 inline T host_to_le(T data) {
199 inline T be_to_host(T data) {
200 return change_endian(data);
209 inline T le_to_host(T data) {
212#elif TINS_IS_BIG_ENDIAN
219 inline T host_to_be(T data) {
231 inline T host_to_le(T data) {
232 return change_endian(data);
241 inline T be_to_host(T data) {
251 inline T le_to_host(T data) {
252 return change_endian(data);
The Tins namespace.
Definition address_range.h:38