d9818dd68c
* u32/u64/uword mismatches * pointer-to-int fixes * printf formatting issues * issues with incorrect "ULL" and related suffixes * structure alignment and padding issues Change-Id: I70b989007758755fe8211c074f651150680f60b4 Signed-off-by: David Johnson <davijoh3@cisco.com>
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __included_crc32_h__
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#define __included_crc32_h__
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#include <vppinfra/clib.h>
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#if __SSE4_2__
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#define clib_crc32c_uses_intrinsics
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#include <x86intrin.h>
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#define crc32_u64 _mm_crc32_u64
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#define crc32_u32 _mm_crc32_u32
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static_always_inline u32
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clib_crc32c (u8 * s, int len)
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{
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u32 v = 0;
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#if defined(__x86_64__)
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for (; len >= 8; len -= 8, s += 8)
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v = _mm_crc32_u64 (v, *((u64 *) s));
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#else
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/* workaround weird GCC bug when using _mm_crc32_u32
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which happens with -O2 optimization */
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#if !defined (__i686__)
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asm volatile ("":::"memory");
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#endif
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#endif
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for (; len >= 4; len -= 4, s += 4)
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v = _mm_crc32_u32 (v, *((u32 *) s));
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for (; len >= 2; len -= 2, s += 2)
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v = _mm_crc32_u16 (v, *((u16 *) s));
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for (; len >= 1; len -= 1, s += 1)
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v = _mm_crc32_u8 (v, *((u16 *) s));
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return v;
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}
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#elif __ARM_FEATURE_CRC32
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#define clib_crc32c_uses_intrinsics
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#include <arm_acle.h>
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#define crc32_u64 __crc32cd
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#define crc32_u32 __crc32cw
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static_always_inline u32
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clib_crc32c (u8 * s, int len)
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{
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u32 v = 0;
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for (; len >= 8; len -= 8, s += 8)
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v = __crc32cd (v, *((u64 *) s));
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for (; len >= 4; len -= 4, s += 4)
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v = __crc32cw (v, *((u32 *) s));
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for (; len >= 2; len -= 2, s += 2)
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v = __crc32ch (v, *((u16 *) s));
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for (; len >= 1; len -= 1, s += 1)
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v = __crc32cb (v, *((u8 *) s));
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return v;
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}
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#endif
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#endif /* __included_crc32_h__ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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