Add 'neozip/' from commit 'c2712b8a345191f6ed79558c089777df94590087'

git-subtree-dir: neozip
git-subtree-mainline: b1e34e861b5d732afe828d58aad2c638135061fd
git-subtree-split: c2712b8a345191f6ed79558c089777df94590087

1 files changed, 31 insertions, 0 deletions

diff --git a/neozip/arch/x86/crc32_pclmulqdq.c b/neozip/arch/x86/crc32_pclmulqdq.c
new file mode 100644
index 0000000000..c8be1b43ba
--- /dev/null
+++ b/neozip/arch/x86/crc32_pclmulqdq.c
@@ -0,0 +1,31 @@
+/*
+ * Compute the CRC32 using a parallelized folding approach with the PCLMULQDQ
+ * instruction.
+ *
+ * A white paper describing this algorithm can be found at:
+ *     doc/crc-pclmulqdq.pdf
+ *
+ * Copyright (C) 2013 Intel Corporation. All rights reserved.
+ * Copyright (C) 2016 Marian Beermann (support for initial value)
+ * Authors:
+ *     Wajdi Feghali   <wajdi.k.feghali@intel.com>
+ *     Jim Guilford    <james.guilford@intel.com>
+ *     Vinodh Gopal    <vinodh.gopal@intel.com>
+ *     Erdinc Ozturk   <erdinc.ozturk@intel.com>
+ *     Jim Kukunas     <james.t.kukunas@linux.intel.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#ifdef X86_PCLMULQDQ_CRC
+
+#include "crc32_pclmulqdq_tpl.h"
+
+Z_INTERNAL uint32_t crc32_pclmulqdq(uint32_t crc, const uint8_t *buf, size_t len) {
+    return crc32_copy_impl(crc, NULL, buf, len, 0);
+}
+
+Z_INTERNAL uint32_t crc32_copy_pclmulqdq(uint32_t crc, uint8_t *dst, const uint8_t *src, size_t len) {
+    return crc32_copy_impl(crc, dst, src, len, 1);
+}
+#endif