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155 lines
5.1 KiB
155 lines
5.1 KiB
// AsmJit - Machine code generation for C++
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//
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// * Official AsmJit Home Page: https://asmjit.com
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// * Official Github Repository: https://github.com/asmjit/asmjit
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//
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// Copyright (c) 2008-2020 The AsmJit Authors
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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#ifndef ASMJIT_CORE_CPUINFO_H_INCLUDED
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#define ASMJIT_CORE_CPUINFO_H_INCLUDED
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#include "../core/archtraits.h"
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#include "../core/features.h"
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#include "../core/globals.h"
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#include "../core/string.h"
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ASMJIT_BEGIN_NAMESPACE
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//! \addtogroup asmjit_core
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//! \{
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// ============================================================================
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// [asmjit::CpuInfo]
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// ============================================================================
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//! CPU information.
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class CpuInfo {
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public:
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//! Architecture.
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uint8_t _arch;
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//! Sub-architecture.
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uint8_t _subArch;
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//! Reserved for future use.
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uint16_t _reserved;
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//! CPU family ID.
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uint32_t _familyId;
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//! CPU model ID.
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uint32_t _modelId;
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//! CPU brand ID.
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uint32_t _brandId;
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//! CPU stepping.
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uint32_t _stepping;
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//! Processor type.
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uint32_t _processorType;
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//! Maximum number of addressable IDs for logical processors.
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uint32_t _maxLogicalProcessors;
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//! Cache line size (in bytes).
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uint32_t _cacheLineSize;
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//! Number of hardware threads.
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uint32_t _hwThreadCount;
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//! CPU vendor string.
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FixedString<16> _vendor;
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//! CPU brand string.
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FixedString<64> _brand;
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//! CPU features.
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BaseFeatures _features;
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//! \name Construction & Destruction
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//! \{
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inline CpuInfo() noexcept { reset(); }
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inline CpuInfo(const CpuInfo& other) noexcept = default;
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inline explicit CpuInfo(Globals::NoInit_) noexcept
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: _features(Globals::NoInit) {};
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//! Returns the host CPU information.
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ASMJIT_API static const CpuInfo& host() noexcept;
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//! Initializes CpuInfo to the given architecture, see \ref Environment.
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inline void initArch(uint32_t arch, uint32_t subArch = 0u) noexcept {
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_arch = uint8_t(arch);
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_subArch = uint8_t(subArch);
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}
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inline void reset() noexcept { memset(this, 0, sizeof(*this)); }
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//! \}
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//! \name Overloaded Operators
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//! \{
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inline CpuInfo& operator=(const CpuInfo& other) noexcept = default;
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//! \}
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//! \name Accessors
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//! \{
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//! Returns the CPU architecture id, see \ref Environment::Arch.
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inline uint32_t arch() const noexcept { return _arch; }
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//! Returns the CPU architecture sub-id, see \ref Environment::SubArch.
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inline uint32_t subArch() const noexcept { return _subArch; }
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//! Returns the CPU family ID.
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inline uint32_t familyId() const noexcept { return _familyId; }
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//! Returns the CPU model ID.
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inline uint32_t modelId() const noexcept { return _modelId; }
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//! Returns the CPU brand id.
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inline uint32_t brandId() const noexcept { return _brandId; }
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//! Returns the CPU stepping.
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inline uint32_t stepping() const noexcept { return _stepping; }
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//! Returns the processor type.
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inline uint32_t processorType() const noexcept { return _processorType; }
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//! Returns the number of maximum logical processors.
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inline uint32_t maxLogicalProcessors() const noexcept { return _maxLogicalProcessors; }
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//! Returns the size of a cache line flush.
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inline uint32_t cacheLineSize() const noexcept { return _cacheLineSize; }
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//! Returns number of hardware threads available.
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inline uint32_t hwThreadCount() const noexcept { return _hwThreadCount; }
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//! Returns the CPU vendor.
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inline const char* vendor() const noexcept { return _vendor.str; }
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//! Tests whether the CPU vendor is equal to `s`.
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inline bool isVendor(const char* s) const noexcept { return _vendor.eq(s); }
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//! Returns the CPU brand string.
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inline const char* brand() const noexcept { return _brand.str; }
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//! Returns all CPU features as `BaseFeatures`, cast to your arch-specific class
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//! if needed.
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template<typename T = BaseFeatures>
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inline const T& features() const noexcept { return _features.as<T>(); }
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//! Tests whether the CPU has the given `feature`.
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inline bool hasFeature(uint32_t featureId) const noexcept { return _features.has(featureId); }
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//! Adds the given CPU `feature` to the list of this CpuInfo features.
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inline CpuInfo& addFeature(uint32_t featureId) noexcept { _features.add(featureId); return *this; }
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//! \}
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};
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//! \}
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ASMJIT_END_NAMESPACE
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#endif // ASMJIT_CORE_CPUINFO_H_INCLUDED
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