1 /*
2 * ccsha256_di.c
3 * corecrypto
4 *
5 * Created on 09/18/2012
6 *
7 * Copyright (c) 2012,2014,2015 Apple Inc. All rights reserved.
8 *
9 *
10 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
11 *
12 * This file contains Original Code and/or Modifications of Original Code
13 * as defined in and that are subject to the Apple Public Source License
14 * Version 2.0 (the 'License'). You may not use this file except in
15 * compliance with the License. The rights granted to you under the License
16 * may not be used to create, or enable the creation or redistribution of,
17 * unlawful or unlicensed copies of an Apple operating system, or to
18 * circumvent, violate, or enable the circumvention or violation of, any
19 * terms of an Apple operating system software license agreement.
20 *
21 * Please obtain a copy of the License at
22 * http://www.opensource.apple.com/apsl/ and read it before using this file.
23 *
24 * The Original Code and all software distributed under the License are
25 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
26 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
27 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
29 * Please see the License for the specific language governing rights and
30 * limitations under the License.
31 *
32 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
33 */
34
35 #include <corecrypto/ccsha2.h>
36 #include "ccsha2_internal.h"
37 #include <corecrypto/cc_runtime_config.h>
38
39 #include "corecrypto/fipspost_trace.h"
40
41 const struct ccdigest_info *
ccsha256_di(void)42 ccsha256_di(void)
43 {
44 FIPSPOST_TRACE_EVENT;
45
46 #if CCSHA2_VNG_INTEL
47 #if defined (__x86_64__)
48 if (CC_HAS_AVX512_AND_IN_KERNEL()) {
49 return &ccsha256_vng_intel_SupplementalSSE3_di;
50 } else
51 #if CC_ACCELERATECRYPTO
52 { return &ccsha256_vng_intel_di; // use AccelerateCrypto
53 }
54 #else
55 { return CC_HAS_AVX2() ? &ccsha256_vng_intel_AVX2_di :
56 ((CC_HAS_AVX1() ? &ccsha256_vng_intel_AVX1_di :
57 &ccsha256_vng_intel_SupplementalSSE3_di)); }
58 #endif
59 #else
60 return &ccsha256_vng_intel_SupplementalSSE3_di;
61 #endif
62 #elif CCSHA2_VNG_ARM
63 return &ccsha256_vng_arm_di;
64 #elif CCSHA256_ARMV6M_ASM
65 return &ccsha256_v6m_di;
66 #else
67 return &ccsha256_ltc_di;
68 #endif
69 }
70