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authorDamjan Marion <damarion@cisco.com>2016-12-19 23:05:39 +0100
committerDamjan Marion <damarion@cisco.com>2016-12-28 12:25:14 +0100
commit7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 (patch)
tree5de62f8dbd3a752f5a676ca600e43d2652d1ff1a /src/vppinfra/byte_order.h
parent696f1adec0df3b8f161862566dd9c86174302658 (diff)
Reorganize source tree to use single autotools instance
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vppinfra/byte_order.h')
-rw-r--r--src/vppinfra/byte_order.h202
1 files changed, 202 insertions, 0 deletions
diff --git a/src/vppinfra/byte_order.h b/src/vppinfra/byte_order.h
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ Copyright (c) 2004 Eliot Dresselhaus
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef included_clib_byte_order_h
+#define included_clib_byte_order_h
+
+#include <vppinfra/clib.h>
+
+#if (__BYTE_ORDER__)==( __ORDER_LITTLE_ENDIAN__)
+#define CLIB_ARCH_IS_BIG_ENDIAN (0)
+#define CLIB_ARCH_IS_LITTLE_ENDIAN (1)
+#else
+/* Default is big endian. */
+#define CLIB_ARCH_IS_BIG_ENDIAN (1)
+#define CLIB_ARCH_IS_LITTLE_ENDIAN (0)
+#endif
+
+/* Big/little endian. */
+#define clib_arch_is_big_endian CLIB_ARCH_IS_BIG_ENDIAN
+#define clib_arch_is_little_endian CLIB_ARCH_IS_LITTLE_ENDIAN
+
+always_inline u16
+clib_byte_swap_u16 (u16 x)
+{
+ return (x >> 8) | (x << 8);
+}
+
+always_inline i16
+clib_byte_swap_i16 (i16 x)
+{
+ return clib_byte_swap_u16 (x);
+}
+
+always_inline u32
+clib_byte_swap_u32 (u32 x)
+{
+#if defined (i386) || defined (__x86_64__)
+ if (!__builtin_constant_p (x))
+ {
+ asm volatile ("bswap %0":"=r" (x):"0" (x));
+ return x;
+ }
+#endif
+ return ((x << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | (x >> 24));
+}
+
+always_inline i32
+clib_byte_swap_i32 (i32 x)
+{
+ return clib_byte_swap_u32 (x);
+}
+
+always_inline u64
+clib_byte_swap_u64 (u64 x)
+{
+#if defined (__x86_64__)
+ if (!__builtin_constant_p (x))
+ {
+ asm volatile ("bswapq %0":"=r" (x):"0" (x));
+ return x;
+ }
+#endif
+#define _(x,n,i) \
+ ((((x) >> (8*(i))) & 0xff) << (8*((n)-(i)-1)))
+ return (_(x, 8, 0) | _(x, 8, 1)
+ | _(x, 8, 2) | _(x, 8, 3)
+ | _(x, 8, 4) | _(x, 8, 5) | _(x, 8, 6) | _(x, 8, 7));
+#undef _
+}
+
+always_inline i64
+clib_byte_swap_i64 (i64 x)
+{
+ return clib_byte_swap_u64 (x);
+}
+
+#define _(sex,type) \
+/* HOST -> SEX */ \
+always_inline type \
+clib_host_to_##sex##_##type (type x) \
+{ \
+ if (! clib_arch_is_##sex##_endian) \
+ x = clib_byte_swap_##type (x); \
+ return x; \
+} \
+ \
+always_inline type \
+clib_host_to_##sex##_mem_##type (type * x) \
+{ \
+ type v = x[0]; \
+ return clib_host_to_##sex##_##type (v); \
+} \
+ \
+always_inline type \
+clib_host_to_##sex##_unaligned_mem_##type (type * x) \
+{ \
+ type v = clib_mem_unaligned (x, type); \
+ return clib_host_to_##sex##_##type (v); \
+} \
+ \
+/* SEX -> HOST */ \
+always_inline type \
+clib_##sex##_to_host_##type (type x) \
+{ return clib_host_to_##sex##_##type (x); } \
+ \
+always_inline type \
+clib_##sex##_to_host_mem_##type (type * x) \
+{ return clib_host_to_##sex##_mem_##type (x); } \
+ \
+always_inline type \
+clib_##sex##_to_host_unaligned_mem_##type (type * x) \
+{ return clib_host_to_##sex##_unaligned_mem_##type (x); }
+
+#ifndef __cplusplus
+_(little, u16)
+_(little, u32)
+_(little, u64)
+_(little, i16)
+_(little, i32)
+_(little, i64)
+_(big, u16) _(big, u32) _(big, u64) _(big, i16) _(big, i32) _(big, i64)
+#endif
+#undef _
+/* Network "net" alias for "big". */
+#define _(type) \
+always_inline type \
+clib_net_to_host_##type (type x) \
+{ return clib_big_to_host_##type (x); } \
+ \
+always_inline type \
+clib_net_to_host_mem_##type (type * x) \
+{ return clib_big_to_host_mem_##type (x); } \
+ \
+always_inline type \
+clib_net_to_host_unaligned_mem_##type (type * x) \
+{ return clib_big_to_host_unaligned_mem_##type (x); } \
+ \
+always_inline type \
+clib_host_to_net_##type (type x) \
+{ return clib_host_to_big_##type (x); } \
+ \
+always_inline type \
+clib_host_to_net_mem_##type (type * x) \
+{ return clib_host_to_big_mem_##type (x); } \
+ \
+always_inline type \
+clib_host_to_net_unaligned_mem_##type (type * x) \
+{ return clib_host_to_big_unaligned_mem_##type (x); }
+#ifndef __cplusplus
+ _(u16);
+_(i16);
+_(u32);
+_(i32);
+_(u64);
+_(i64);
+#endif
+
+#undef _
+
+#endif /* included_clib_byte_order_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */