| // Copyright 2017 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "internal/unix_features_aggregator.h" |
| #include "internal/string_view.h" |
| |
| void CpuFeatures_SetFromFlags(const size_t configs_size, |
| const CapabilityConfig* configs, |
| const StringView flags_line, |
| void* const features) { |
| size_t i = 0; |
| for (; i < configs_size; ++i) { |
| const CapabilityConfig config = configs[i]; |
| config.set_bit(features, CpuFeatures_StringView_HasWord( |
| flags_line, config.proc_cpuinfo_flag)); |
| } |
| } |
| |
| static bool IsSet(const uint32_t mask, const uint32_t value) { |
| if (mask == 0) return false; |
| return (value & mask) == mask; |
| } |
| |
| static bool IsHwCapsSet(const HardwareCapabilities hwcaps_mask, |
| const HardwareCapabilities hwcaps) { |
| return IsSet(hwcaps_mask.hwcaps, hwcaps.hwcaps) || |
| IsSet(hwcaps_mask.hwcaps2, hwcaps.hwcaps2); |
| } |
| |
| void CpuFeatures_OverrideFromHwCaps(const size_t configs_size, |
| const CapabilityConfig* configs, |
| const HardwareCapabilities hwcaps, |
| void* const features) { |
| size_t i = 0; |
| for (; i < configs_size; ++i) { |
| const CapabilityConfig* config = &configs[i]; |
| if (IsHwCapsSet(config->hwcaps_mask, hwcaps)) { |
| config->set_bit(features, true); |
| } |
| } |
| } |