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1 /* Copyright (c) 2016, Google Inc.
2  *
3  * Permission to use, copy, modify, and/or distribute this software for any
4  * purpose with or without fee is hereby granted, provided that the above
5  * copyright notice and this permission notice appear in all copies.
6  *
7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14 
15 #include <openssl/cpu.h>
16 
17 #if defined(OPENSSL_PPC64LE)
18 
19 #include <sys/auxv.h>
20 
21 #include "internal.h"
22 
23 
24 #if !defined(PPC_FEATURE2_HAS_VCRYPTO)
25 /* PPC_FEATURE2_HAS_VCRYPTO was taken from section 4.1.2.3 of the “OpenPOWER
26  * ABI for Linux Supplement”. */
27 #define PPC_FEATURE2_HAS_VCRYPTO 0x02000000
28 #endif
29 
OPENSSL_cpuid_setup(void)30 void OPENSSL_cpuid_setup(void) {
31   OPENSSL_ppc64le_hwcap2 = getauxval(AT_HWCAP2);
32 }
33 
CRYPTO_is_PPC64LE_vcrypto_capable(void)34 int CRYPTO_is_PPC64LE_vcrypto_capable(void) {
35   return (OPENSSL_ppc64le_hwcap2 & PPC_FEATURE2_HAS_VCRYPTO) != 0;
36 }
37 
38 #endif  /* OPENSSL_PPC64LE */
39