| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #ifndef ART_RUNTIME_ARCH_MIPS64_INSTRUCTION_SET_FEATURES_MIPS64_H_ |
| #define ART_RUNTIME_ARCH_MIPS64_INSTRUCTION_SET_FEATURES_MIPS64_H_ |
| |
| #include "arch/instruction_set_features.h" |
| |
| namespace art { |
| |
| class Mips64InstructionSetFeatures; |
| using Mips64FeaturesUniquePtr = std::unique_ptr<const Mips64InstructionSetFeatures>; |
| |
| // Instruction set features relevant to the MIPS64 architecture. |
| class Mips64InstructionSetFeatures FINAL : public InstructionSetFeatures { |
| public: |
| // Process a CPU variant string like "r4000" and create InstructionSetFeatures. |
| static Mips64FeaturesUniquePtr FromVariant(const std::string& variant, |
| std::string* error_msg); |
| |
| // Parse a bitmap and create an InstructionSetFeatures. |
| static Mips64FeaturesUniquePtr FromBitmap(uint32_t bitmap); |
| |
| // Turn C pre-processor #defines into the equivalent instruction set features. |
| static Mips64FeaturesUniquePtr FromCppDefines(); |
| |
| // Process /proc/cpuinfo and use kRuntimeISA to produce InstructionSetFeatures. |
| static Mips64FeaturesUniquePtr FromCpuInfo(); |
| |
| // Process the auxiliary vector AT_HWCAP entry and use kRuntimeISA to produce |
| // InstructionSetFeatures. |
| static Mips64FeaturesUniquePtr FromHwcap(); |
| |
| // Use assembly tests of the current runtime (ie kRuntimeISA) to determine the |
| // InstructionSetFeatures. This works around kernel bugs in AT_HWCAP and /proc/cpuinfo. |
| static Mips64FeaturesUniquePtr FromAssembly(); |
| |
| bool Equals(const InstructionSetFeatures* other) const OVERRIDE; |
| |
| InstructionSet GetInstructionSet() const OVERRIDE { |
| return kMips64; |
| } |
| |
| uint32_t AsBitmap() const OVERRIDE; |
| |
| std::string GetFeatureString() const OVERRIDE; |
| |
| virtual ~Mips64InstructionSetFeatures() {} |
| |
| protected: |
| // Parse a vector of the form "fpu32", "mips2" adding these to a new Mips64InstructionSetFeatures. |
| std::unique_ptr<const InstructionSetFeatures> |
| AddFeaturesFromSplitString(const bool smp, |
| const std::vector<std::string>& features, |
| std::string* error_msg) const OVERRIDE; |
| |
| private: |
| explicit Mips64InstructionSetFeatures(bool smp) : InstructionSetFeatures(smp) { |
| } |
| |
| // Bitmap positions for encoding features as a bitmap. |
| enum { |
| kSmpBitfield = 1, |
| }; |
| |
| DISALLOW_COPY_AND_ASSIGN(Mips64InstructionSetFeatures); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_ARCH_MIPS64_INSTRUCTION_SET_FEATURES_MIPS64_H_ |