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/*
* Copyright (C) 2011 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_INSTRUCTION_SET_H_
#define ART_RUNTIME_INSTRUCTION_SET_H_
#include <iosfwd>
#include <string>
#include "base/macros.h"
namespace art {
enum InstructionSet {
kNone,
kArm,
kArm64,
kThumb2,
kX86,
kX86_64,
kMips
};
std::ostream& operator<<(std::ostream& os, const InstructionSet& rhs);
size_t GetInstructionSetPointerSize(InstructionSet isa);
size_t GetInstructionSetAlignment(InstructionSet isa);
bool Is64BitInstructionSet(InstructionSet isa);
#if defined(__arm__)
static constexpr InstructionSet kRuntimeISA = kArm;
#elif defined(__aarch64__)
static constexpr InstructionSet kRuntimeISA = kArm64;
#elif defined(__mips__)
static constexpr InstructionSet kRuntimeISA = kMips;
#elif defined(__i386__)
static constexpr InstructionSet kRuntimeISA = kX86;
#elif defined(__x86_64__)
static constexpr InstructionSet kRuntimeISA = kX86_64;
#else
static constexpr InstructionSet kRuntimeISA = kNone;
#endif
enum InstructionFeatures {
kHwDiv = 1 // Supports hardware divide.
};
// This is a bitmask of supported features per architecture.
class PACKED(4) InstructionSetFeatures {
public:
InstructionSetFeatures() : mask_(0) {}
explicit InstructionSetFeatures(uint32_t mask) : mask_(mask) {}
static InstructionSetFeatures GuessInstructionSetFeatures();
bool HasDivideInstruction() const {
return (mask_ & kHwDiv) != 0;
}
void SetHasDivideInstruction(bool v) {
mask_ = (mask_ & ~kHwDiv) | (v ? kHwDiv : 0);
}
std::string GetFeatureString() const;
// Other features in here.
bool operator==(const InstructionSetFeatures &peer) const {
return mask_ == peer.mask_;
}
bool operator!=(const InstructionSetFeatures &peer) const {
return mask_ != peer.mask_;
}
bool operator<=(const InstructionSetFeatures &peer) const {
return (mask_ & peer.mask_) == mask_;
}
private:
uint32_t mask_;
};
} // namespace art
#endif // ART_RUNTIME_INSTRUCTION_SET_H_
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