entered advanced internal development stage.

1 files changed, 50 insertions, 0 deletions

diff --git a/src/hash/ntapi_tt_crc32.c b/src/hash/ntapi_tt_crc32.c
new file mode 100644
index 0000000..7ce25d3
--- /dev/null
+++ b/src/hash/ntapi_tt_crc32.c
@@ -0,0 +1,50 @@
+/********************************************************/
+/*  ntapi: Native API core library                      */
+/*  Copyright (C) 2013,2014,2015  Z. Gilboa             */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
+/********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/nt_crc32.h>
+
+static const uint32_t crc32_table[256] = NTAPI_CRC32_TABLE;
+
+uint32_t __ntapi_tt_buffer_crc32(
+	uint32_t	prev_hash,
+	const void *	buffer,
+	size_t		size)
+{
+	unsigned char *	ch;
+	uint32_t	crc32;
+
+	crc32	= prev_hash ^ 0xFFFFFFFF;
+	ch	= (unsigned char *)buffer;
+
+	for (; size; size--,ch++)
+		crc32 = (crc32 >> 8) ^ crc32_table[(crc32 ^ *ch) & 0xFF];
+
+	return (crc32 ^ 0xFFFFFFFF);
+}
+
+
+uint32_t __cdecl __ntapi_tt_mbstr_crc32(const void * str)
+{
+	uint32_t	crc32;
+	unsigned char *	ch;
+
+	crc32	= 0 ^ 0xFFFFFFFF;
+	ch	= (unsigned char *)str;
+
+	while (*ch) {
+		crc32 = (crc32 >> 8) ^ crc32_table[(crc32 ^ *ch) & 0xFF];
+		ch++;
+	}
+
+	return (crc32 ^ 0xFFFFFFFF);
+}
+
+
+const uint32_t * __cdecl __ntapi_tt_crc32_table(void)
+{
+	return crc32_table;
+}