added crc64 definitions and interfaces.

1 files changed, 49 insertions, 0 deletions

diff --git a/src/hash/ntapi_tt_crc64.c b/src/hash/ntapi_tt_crc64.c
new file mode 100644
index 0000000..fd76ec5
--- /dev/null
+++ b/src/hash/ntapi_tt_crc64.c
@@ -0,0 +1,49 @@
+/********************************************************/
+/*  ntapi: Native API core library                      */
+/*  Copyright (C) 2013--2017  Z. Gilboa                 */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
+/********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/nt_crc64.h>
+
+static const uint64_t crc64_table[256] = NTAPI_CRC64_TABLE;
+
+uint64_t __ntapi_tt_buffer_crc64(
+	uint64_t	prev_hash,
+	const void *	buffer,
+	size_t		size)
+{
+	const unsigned char *	ch;
+	uint64_t		crc64;
+
+	crc64	= prev_hash ^ 0xFFFFFFFFFFFFFFFF;
+	ch	= buffer;
+
+	for (; size; size--,ch++)
+		crc64 = (crc64 >> 8) ^ crc64_table[(crc64 ^ *ch) & 0xFF];
+
+	return (crc64 ^ 0xFFFFFFFFFFFFFFFF);
+}
+
+uint64_t __cdecl __ntapi_tt_mbstr_crc64(const void * str)
+{
+	const unsigned char *	ch;
+	uint64_t		crc64;
+
+	crc64	= 0 ^ 0xFFFFFFFFFFFFFFFF;
+	ch	= str;
+
+	while (*ch) {
+		crc64 = (crc64 >> 8) ^ crc64_table[(crc64 ^ *ch) & 0xFF];
+		ch++;
+	}
+
+	return (crc64 ^ 0xFFFFFFFFFFFFFFFF);
+}
+
+
+const uint64_t * __cdecl __ntapi_tt_crc64_table(void)
+{
+	return crc64_table;
+}