| Robert Sloan | ab8b888 | 2018-03-26 11:39:51 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2018, 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_AARCH64) && defined(OPENSSL_FUCHSIA) && \ |
| 18 | !defined(OPENSSL_STATIC_ARMCAP) |
| 19 | |
| 20 | #include <zircon/features.h> |
| 21 | #include <zircon/syscalls.h> |
| 22 | #include <zircon/types.h> |
| 23 | |
| 24 | #include <openssl/arm_arch.h> |
| 25 | |
| 26 | #include "internal.h" |
| 27 | |
| 28 | extern uint32_t OPENSSL_armcap_P; |
| 29 | |
| 30 | void OPENSSL_cpuid_setup(void) { |
| 31 | uint32_t hwcap; |
| 32 | zx_status_t rc = zx_system_get_features(ZX_FEATURE_KIND_CPU, &hwcap); |
| 33 | if (rc != ZX_OK || (hwcap & ZX_ARM64_FEATURE_ISA_ASIMD) == 0) { |
| 34 | // Matching OpenSSL, if NEON/ASIMD is missing, don't report other features |
| 35 | // either. |
| 36 | return; |
| 37 | } |
| 38 | |
| 39 | OPENSSL_armcap_P |= ARMV7_NEON; |
| 40 | |
| 41 | if (hwcap & ZX_ARM64_FEATURE_ISA_AES) { |
| 42 | OPENSSL_armcap_P |= ARMV8_AES; |
| 43 | } |
| 44 | if (hwcap & ZX_ARM64_FEATURE_ISA_PMULL) { |
| 45 | OPENSSL_armcap_P |= ARMV8_PMULL; |
| 46 | } |
| 47 | if (hwcap & ZX_ARM64_FEATURE_ISA_SHA1) { |
| 48 | OPENSSL_armcap_P |= ARMV8_SHA1; |
| 49 | } |
| 50 | if (hwcap & ZX_ARM64_FEATURE_ISA_SHA2) { |
| 51 | OPENSSL_armcap_P |= ARMV8_SHA256; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | #endif // OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP |