124 lines
2.5 KiB
C++
124 lines
2.5 KiB
C++
/*
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* mptCPU.h
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* --------
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* Purpose: CPU feature detection.
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* Notes : (currently none)
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#pragma once
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#include "openmpt/all/BuildSettings.hpp"
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#include "mpt/base/macros.hpp"
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#ifdef MPT_ENABLE_ARCH_INTRINSICS
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#include "mpt/arch/arch.hpp"
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#endif
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OPENMPT_NAMESPACE_BEGIN
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namespace CPU
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{
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#ifdef MPT_ENABLE_ARCH_INTRINSICS
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#if defined(MODPLUG_TRACKER) && !defined(MPT_BUILD_WINESUPPORT)
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namespace detail
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{
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inline MPT_CONSTINIT mpt::arch::current::feature_flags EnabledFeatures;
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inline MPT_CONSTINIT mpt::arch::current::mode_flags EnabledModes;
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} // namespace detail
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inline void EnableAvailableFeatures() noexcept
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{
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CPU::detail::EnabledFeatures = mpt::arch::get_cpu_info().get_features();
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CPU::detail::EnabledModes = mpt::arch::get_cpu_info().get_modes();
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}
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// enabled processor features for inline asm and intrinsics
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[[nodiscard]] MPT_FORCEINLINE mpt::arch::current::feature_flags GetEnabledFeatures() noexcept
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{
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return CPU::detail::EnabledFeatures;
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}
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[[nodiscard]] MPT_FORCEINLINE mpt::arch::current::mode_flags GetEnabledModes() noexcept
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{
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return CPU::detail::EnabledModes;
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}
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struct Info
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{
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[[nodiscard]] MPT_FORCEINLINE bool HasFeatureSet(mpt::arch::current::feature_flags features) const noexcept
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{
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return features == (GetEnabledFeatures() & features);
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}
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[[nodiscard]] MPT_FORCEINLINE bool HasModesEnabled(mpt::arch::current::mode_flags modes) const noexcept
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{
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return modes == (GetEnabledModes() & modes);
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}
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};
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#else // !MODPLUG_TRACKER
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struct Info
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{
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private:
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const mpt::arch::flags_cache m_flags{mpt::arch::get_cpu_info()};
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public:
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[[nodiscard]] MPT_FORCEINLINE bool HasFeatureSet(mpt::arch::current::feature_flags features) const noexcept
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{
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return m_flags[features];
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}
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[[nodiscard]] MPT_FORCEINLINE bool HasModesEnabled(mpt::arch::current::mode_flags modes) const noexcept
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{
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return m_flags[modes];
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}
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};
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#endif // MODPLUG_TRACKER
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// legacy interface
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namespace feature = mpt::arch::current::feature;
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namespace mode = mpt::arch::current::mode;
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[[nodiscard]] MPT_FORCEINLINE bool HasFeatureSet(mpt::arch::current::feature_flags features) noexcept
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{
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return CPU::Info{}.HasFeatureSet(features);
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}
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[[nodiscard]] MPT_FORCEINLINE bool HasModesEnabled(mpt::arch::current::mode_flags modes) noexcept
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{
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return CPU::Info{}.HasModesEnabled(modes);
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}
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#endif // MPT_ENABLE_ARCH_INTRINSICS
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} // namespace CPU
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OPENMPT_NAMESPACE_END
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