From 2653052944aef689484299c3f257db993dda106d Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Thu, 2 Feb 2017 22:48:07 -0500
Subject: added crc64 definitions and interfaces.

---
 src/hash/ntapi_tt_crc64.c  | 49 ++++++++++++++++++++++++++++++++++++++++++++++
 src/internal/ntapi.c       |  6 ++++++
 src/internal/ntapi_fnapi.h |  5 +++++
 3 files changed, 60 insertions(+)
 create mode 100644 src/hash/ntapi_tt_crc64.c

(limited to 'src')

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;
+}
diff --git a/src/internal/ntapi.c b/src/internal/ntapi.c
index c3f5817..5c60ffd 100644
--- a/src/internal/ntapi.c
+++ b/src/internal/ntapi.c
@@ -9,6 +9,7 @@
 
 #include <ntapi/nt_status.h>
 #include <ntapi/nt_crc32.h>
+#include <ntapi/nt_crc64.h>
 #include <ntapi/nt_object.h>
 #include <ntapi/nt_sysinfo.h>
 #include <ntapi/nt_memory.h>
@@ -152,6 +153,11 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
 	__ntapi->tt_mbstr_crc32					= __ntapi_tt_mbstr_crc32;
 	__ntapi->tt_crc32_table					= __ntapi_tt_crc32_table;
 
+	/* nt_crc64.h */
+	__ntapi->tt_buffer_crc64 				= __ntapi_tt_buffer_crc64;
+	__ntapi->tt_mbstr_crc64					= __ntapi_tt_mbstr_crc64;
+	__ntapi->tt_crc64_table					= __ntapi_tt_crc64_table;
+
 	/* nt_file.h */
 	__ntapi->tt_get_file_handle_type			= __ntapi_tt_get_file_handle_type;
 	__ntapi->tt_open_logical_parent_directory		= __ntapi_tt_open_logical_parent_directory;
diff --git a/src/internal/ntapi_fnapi.h b/src/internal/ntapi_fnapi.h
index 75621f7..93e38bd 100644
--- a/src/internal/ntapi_fnapi.h
+++ b/src/internal/ntapi_fnapi.h
@@ -32,6 +32,11 @@ ntapi_tt_buffer_crc32				__ntapi_tt_buffer_crc32;
 ntapi_tt_mbstr_crc32				__ntapi_tt_mbstr_crc32;
 ntapi_tt_crc32_table				__ntapi_tt_crc32_table;
 
+/* nt_crc64.h */
+ntapi_tt_buffer_crc64				__ntapi_tt_buffer_crc64;
+ntapi_tt_mbstr_crc64				__ntapi_tt_mbstr_crc64;
+ntapi_tt_crc64_table				__ntapi_tt_crc64_table;
+
 /* nt_file.h */
 ntapi_tt_get_file_handle_type			__ntapi_tt_get_file_handle_type;
 ntapi_tt_open_logical_parent_directory		__ntapi_tt_open_logical_parent_directory;
-- 
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