From 5653ed5a69d7d1b24ba99806151dc568e41f3cfd Mon Sep 17 00:00:00 2001
From: markj <markj@FreeBSD.org>
Date: Wed, 19 Apr 2017 16:16:41 +0000
Subject: MFC r313006 (by cem), r315983 (by bde): Add an SSE4.2 implementation
 of crc32 for x86.

---
 sys/sys/libkern.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'sys/sys')

diff --git a/sys/sys/libkern.h b/sys/sys/libkern.h
index 28ab3df..a960df8 100644
--- a/sys/sys/libkern.h
+++ b/sys/sys/libkern.h
@@ -178,6 +178,11 @@ crc32(const void *buf, size_t size)
 uint32_t
 calculate_crc32c(uint32_t crc32c, const unsigned char *buffer,
     unsigned int length);
+#ifdef _KERNEL
+#if defined(__amd64__) || defined(__i386__)
+uint32_t sse42_crc32c(uint32_t, const unsigned char *, unsigned);
+#endif
+#endif
 
 
 LIBKERN_INLINE void *memset(void *, int, size_t);
-- 
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