1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | https://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Author: Frank Du <frank.du@intel.com> |
14 +----------------------------------------------------------------------+
15 */
16
17 #ifndef _CRC32_X86_HEADER_H_
18 #define _CRC32_X86_HEADER_H_
19
20 #include "php.h"
21
22 typedef enum {
23 /* polynomial: 0x04C11DB7, used by bzip */
24 X86_CRC32 = 0,
25 /*
26 polynomial: 0x04C11DB7 with reversed ordering,
27 used by ethernet (IEEE 802.3), gzip, zip, png, etc
28 */
29 X86_CRC32B,
30 /*
31 polynomial: 0x1EDC6F41 with reversed ordering,
32 used by iSCSI, SCTP, Btrfs, ext4, etc
33 */
34 X86_CRC32C,
35 X86_CRC32_MAX,
36 } X86_CRC32_TYPE;
37
38 #if ZEND_INTRIN_SSE4_2_PCLMUL_FUNC_PTR
39 PHP_MINIT_FUNCTION(crc32_x86_intrin);
40 #endif
41
42 #if ZEND_INTRIN_SSE4_2_PCLMUL_NATIVE || ZEND_INTRIN_SSE4_2_PCLMUL_RESOLVER
43 /* Return the size processed by SIMD routine */
44 size_t crc32_x86_simd_update(X86_CRC32_TYPE type, uint32_t *crc, const unsigned char *p, size_t nr);
45 #else
crc32_x86_simd_update(X86_CRC32_TYPE type,uint32_t * crc,const unsigned char * p,size_t nr)46 static inline size_t crc32_x86_simd_update(X86_CRC32_TYPE type, uint32_t *crc, const unsigned char *p, size_t nr)
47 {
48 return 0;
49 }
50 #endif
51
52 #endif
53
