Line data Source code
1 : /*
2 : * Copyright (c) 2015 Cisco and/or its affiliates.
3 : * Licensed under the Apache License, Version 2.0 (the "License");
4 : * you may not use this file except in compliance with the License.
5 : * You may obtain a copy of the License at:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
9 : * Unless required by applicable law or agreed to in writing, software
10 : * distributed under the License is distributed on an "AS IS" BASIS,
11 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 : * See the License for the specific language governing permissions and
13 : * limitations under the License.
14 : */
15 : /*
16 : Copyright (c) 2004 Eliot Dresselhaus
17 :
18 : Permission is hereby granted, free of charge, to any person obtaining
19 : a copy of this software and associated documentation files (the
20 : "Software"), to deal in the Software without restriction, including
21 : without limitation the rights to use, copy, modify, merge, publish,
22 : distribute, sublicense, and/or sell copies of the Software, and to
23 : permit persons to whom the Software is furnished to do so, subject to
24 : the following conditions:
25 :
26 : The above copyright notice and this permission notice shall be
27 : included in all copies or substantial portions of the Software.
28 :
29 : THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 : EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 : MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 : NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
33 : LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
34 : OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
35 : WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 : */
37 :
38 : #ifndef included_clib_byte_order_h
39 : #define included_clib_byte_order_h
40 :
41 : #include <vppinfra/clib.h>
42 :
43 : #if (__BYTE_ORDER__)==( __ORDER_LITTLE_ENDIAN__)
44 : #define CLIB_ARCH_IS_BIG_ENDIAN (0)
45 : #define CLIB_ARCH_IS_LITTLE_ENDIAN (1)
46 : #else
47 : /* Default is big endian. */
48 : #define CLIB_ARCH_IS_BIG_ENDIAN (1)
49 : #define CLIB_ARCH_IS_LITTLE_ENDIAN (0)
50 : #endif
51 :
52 : /* Big/little endian. */
53 : #define clib_arch_is_big_endian CLIB_ARCH_IS_BIG_ENDIAN
54 : #define clib_arch_is_little_endian CLIB_ARCH_IS_LITTLE_ENDIAN
55 :
56 : always_inline u16
57 409511418 : clib_byte_swap_u16 (u16 x)
58 : {
59 409511418 : return __builtin_bswap16 (x);
60 : }
61 :
62 : always_inline i16
63 46 : clib_byte_swap_i16 (i16 x)
64 : {
65 46 : return clib_byte_swap_u16 (x);
66 : }
67 :
68 : always_inline u32
69 99501212 : clib_byte_swap_u32 (u32 x)
70 : {
71 99501212 : return __builtin_bswap32 (x);
72 : }
73 :
74 : always_inline i32
75 4192 : clib_byte_swap_i32 (i32 x)
76 : {
77 4192 : return clib_byte_swap_u32 (x);
78 : }
79 :
80 : always_inline u64
81 8220391 : clib_byte_swap_u64 (u64 x)
82 : {
83 8220391 : return __builtin_bswap64 (x);
84 : }
85 :
86 : always_inline i64
87 : clib_byte_swap_i64 (i64 x)
88 : {
89 : return clib_byte_swap_u64 (x);
90 : }
91 :
92 : #define _(sex,type) \
93 : /* HOST -> SEX */ \
94 : always_inline type \
95 : clib_host_to_##sex##_##type (type x) \
96 : { \
97 : if (! clib_arch_is_##sex##_endian) \
98 : x = clib_byte_swap_##type (x); \
99 : return x; \
100 : } \
101 : \
102 : always_inline type \
103 : clib_host_to_##sex##_mem_##type (type * x) \
104 : { \
105 : type v = x[0]; \
106 : return clib_host_to_##sex##_##type (v); \
107 : } \
108 : \
109 : always_inline type \
110 : clib_host_to_##sex##_unaligned_mem_##type (type * x) \
111 : { \
112 : type v = clib_mem_unaligned (x, type); \
113 : return clib_host_to_##sex##_##type (v); \
114 : } \
115 : \
116 : /* SEX -> HOST */ \
117 : always_inline type \
118 : clib_##sex##_to_host_##type (type x) \
119 : { return clib_host_to_##sex##_##type (x); } \
120 : \
121 : always_inline type \
122 : clib_##sex##_to_host_mem_##type (type * x) \
123 : { return clib_host_to_##sex##_mem_##type (x); } \
124 : \
125 : always_inline type \
126 : clib_##sex##_to_host_unaligned_mem_##type (type * x) \
127 : { return clib_host_to_##sex##_unaligned_mem_##type (x); }
128 :
129 : #ifndef __cplusplus
130 2632480 : _(little, u16)
131 0 : _(little, u32)
132 0 : _(little, u64)
133 : _(little, i16)
134 : _(little, i32)
135 : _(little, i64)
136 869669701 : _(big, u16) _(big, u32) _(big, u64) _(big, i16) _(big, i32) _(big, i64)
137 : #endif
138 : #undef _
139 : /* Network "net" alias for "big". */
140 : #define _(type) \
141 : always_inline type \
142 : clib_net_to_host_##type (type x) \
143 : { return clib_big_to_host_##type (x); } \
144 : \
145 : always_inline type \
146 : clib_net_to_host_mem_##type (type * x) \
147 : { return clib_big_to_host_mem_##type (x); } \
148 : \
149 : always_inline type \
150 : clib_net_to_host_unaligned_mem_##type (type * x) \
151 : { return clib_big_to_host_unaligned_mem_##type (x); } \
152 : \
153 : always_inline type \
154 : clib_host_to_net_##type (type x) \
155 : { return clib_host_to_big_##type (x); } \
156 : \
157 : always_inline type \
158 : clib_host_to_net_mem_##type (type * x) \
159 : { return clib_host_to_big_mem_##type (x); } \
160 : \
161 : always_inline type \
162 : clib_host_to_net_unaligned_mem_##type (type * x) \
163 : { return clib_host_to_big_unaligned_mem_##type (x); }
164 : #ifndef __cplusplus
165 409511065 : _(u16);
166 46 : _(i16);
167 99497020 : _(u32);
168 4192 : _(i32);
169 8220391 : _(u64);
170 : _(i64);
171 : #endif
172 :
173 : #undef _
174 :
175 : /* Dummy endian swap functions for IEEE floating-point numbers */
176 : /* *INDENT-OFF* */
177 13 : always_inline f64 clib_net_to_host_f64 (f64 x) { return x; }
178 5915 : always_inline f64 clib_host_to_net_f64 (f64 x) { return x; }
179 : always_inline f32 clib_net_to_host_f32 (f32 x) { return x; }
180 : always_inline f32 clib_host_to_net_f32 (f32 x) { return x; }
181 : /* *INDENT-ON* */
182 :
183 : #endif /* included_clib_byte_order_h */
184 :
185 : /*
186 : * fd.io coding-style-patch-verification: ON
187 : *
188 : * Local Variables:
189 : * eval: (c-set-style "gnu")
190 : * End:
191 : */
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