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Diffstat (limited to 'runtime/arch/mips64/instruction_set_features_mips64.h')
-rw-r--r-- | runtime/arch/mips64/instruction_set_features_mips64.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/runtime/arch/mips64/instruction_set_features_mips64.h b/runtime/arch/mips64/instruction_set_features_mips64.h new file mode 100644 index 0000000..d5d6012 --- /dev/null +++ b/runtime/arch/mips64/instruction_set_features_mips64.h @@ -0,0 +1,80 @@ +/* + * 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 { + +// 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 const Mips64InstructionSetFeatures* FromVariant(const std::string& variant, + std::string* error_msg); + + // Parse a bitmap and create an InstructionSetFeatures. + static const Mips64InstructionSetFeatures* FromBitmap(uint32_t bitmap); + + // Turn C pre-processor #defines into the equivalent instruction set features. + static const Mips64InstructionSetFeatures* FromCppDefines(); + + // Process /proc/cpuinfo and use kRuntimeISA to produce InstructionSetFeatures. + static const Mips64InstructionSetFeatures* FromCpuInfo(); + + // Process the auxiliary vector AT_HWCAP entry and use kRuntimeISA to produce + // InstructionSetFeatures. + static const Mips64InstructionSetFeatures* 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 const Mips64InstructionSetFeatures* 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. + virtual 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_ |