Lines Matching +full:- +full:- +full:all +full:- +full:features

1 /* cpu_features.c -- Processor features detection.
3  * Copyright 2018 The Chromium Authors. All rights reserved.
4  * Use of this source code is governed by a BSD-style license that can be
21 /* crc32 is a baseline feature in ARMv8.1-A, and macOS running on arm64 is new
39 #include <cpu-features.h>
44 #include <zircon/features.h>
61 // _cpu_check_features() doesn't need to do anything on mac/arm since all
62 // features are known at build time, so don't call it.
63 // Do provide cpu_check_features() (with a no-op implementation) so that we
64 // don't have to make all callers of it check for mac/arm.
94  * See http://bit.ly/2CcoEsr for run-time detection of ARM features and also
100     uint64_t features = android_getCpuFeatures();  in _cpu_check_features()  local
101     arm_cpu_enable_crc32 = !!(features & ANDROID_CPU_ARM64_FEATURE_CRC32);  in _cpu_check_features()
102     arm_cpu_enable_pmull = !!(features & ANDROID_CPU_ARM64_FEATURE_PMULL);  in _cpu_check_features()
104     uint64_t features = android_getCpuFeatures();  in _cpu_check_features()
105     arm_cpu_enable_crc32 = !!(features & ANDROID_CPU_ARM_FEATURE_CRC32);  in _cpu_check_features()
106     arm_cpu_enable_pmull = !!(features & ANDROID_CPU_ARM_FEATURE_PMULL);  in _cpu_check_features()
108     unsigned long features = getauxval(AT_HWCAP);  in _cpu_check_features()
109     arm_cpu_enable_crc32 = !!(features & HWCAP_CRC32);  in _cpu_check_features()
110     arm_cpu_enable_pmull = !!(features & HWCAP_PMULL);  in _cpu_check_features()
112     /* Query HWCAP2 for ARMV8-A SoCs running in aarch32 mode */  in _cpu_check_features()
113     unsigned long features = getauxval(AT_HWCAP2);  in _cpu_check_features()
114     arm_cpu_enable_crc32 = !!(features & HWCAP2_CRC32);  in _cpu_check_features()
115     arm_cpu_enable_pmull = !!(features & HWCAP2_PMULL);  in _cpu_check_features()
117     uint32_t features;  in _cpu_check_features()
118     zx_status_t rc = zx_system_get_features(ZX_FEATURE_KIND_CPU, &features);  in _cpu_check_features()
119     if (rc != ZX_OK || (features & ZX_ARM64_FEATURE_ISA_ASIMD) == 0)  in _cpu_check_features()
121     arm_cpu_enable_crc32 = !!(features & ZX_ARM64_FEATURE_ISA_CRC32);  in _cpu_check_features()
122     arm_cpu_enable_pmull = !!(features & ZX_ARM64_FEATURE_ISA_PMULL);  in _cpu_check_features()
135 /* On x86 we simply use a instruction to check the CPU features.