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