dynarmic/include/oaknut/feature_detection/cpu_feature.hpp
Merry 99c0a73f91 Squashed 'externals/oaknut/' changes from c24f918e5..d0488d932
d0488d932 oaknut: 2.0.0
40ad78bbf oaknut: Implement DualCodeBlock and related support
9f131cfb5 oaknut: add configuration for standalone installation
69799b43c oaknut: Test building for Android on CI
1d51f5512 oaknut: 1.2.2
918bd94f0 oaknut: Eliminate -Wconversion warnings
316d8869e oaknut: Fix edgecases in MOVP2R on +/-4GiB boundary
d8634eaa1 oaknut: Fix page boundary error in ADP
d0ca9a24e oaknut: Update README examples for CPU feature detection
dbeec268b oaknut: feature_detection_freebsd: Warn about incompatibility with earlier FreeBSD versions
86e5386e2 oaknut: feature_detect: Support NetBSD
df4cf2d48 oaknut: feature_detect: Support OpenBSD
99dfff25a oaknut: feature_detection: Read ID registers
319b3d2c9 oaknut: Add basic CPU feature detection
23e9ddb4c oaknut: CI: Don't run slow tests on OpenBSD
734f1bdb4 oaknut: CI: Use up-to-date qemu
f462c9774 oaknut: CI: Build on OpenBSD
19cd42204 oaknut: code_block: Add NetBSD and OpenBSD support
18b86a3ec oaknut: SystemReg: Add more EL0 accessible registers
53c43bf0c oaknut/tests: Reduce iterations for MOVP2R
cc37df19e oaknut: Test on FreeBSD
a66b32d26 oaknut: Fix crossing sign boundary in PageOffset
206468d72 oaknut: CI: Add macos-arm64 build
e6eecc3f9 oaknut: 1.2.1
4252d8f4a oaknut: CMakeLists: Warnings are errors on MSVC
408eed65f oaknut: arm64_encode_helpers: remove unreachable code
bfc8eedfb oaknut: arm64_encode_helpers: p maybe unused
ff4456eca oaknut: Avoid negation of unsigned values
b4ac8fd6c oaknut: Fix MOV for applications of MOVN
0575cadc4 oaknut: Disable certain functionality where absolute addressing is not available
394a3c8f0 oaknut: Appease MSVC
011183670 oaknut: 1.2.0
e83c9f327 oaknut: Add VectorCodeGenerator
5eb122cc5 oaknut: Tidy up public header
45c5a7b25 oaknut: Fix clang-format errors
36243256f oaknut: Add `const` qualifier to `AddrOffset` ctor
4af500cb5 oaknut: Add `ptr` accessor to `Label`
bccb06669 oaknut: CodeGenerator const correctness
da0590a86 oaknut: github: Update package repositories

git-subtree-dir: externals/oaknut
git-subtree-split: d0488d9320ae673167dd9117223e3453d5ff102f
2024-01-28 14:56:59 +00:00

107 lines
3 KiB
C++

// SPDX-FileCopyrightText: Copyright (c) 2023 merryhime <https://mary.rs>
// SPDX-License-Identifier: MIT
#pragma once
#include <bitset>
#include <cstddef>
#include <initializer_list>
#if defined(__cpp_lib_constexpr_bitset) && __cpp_lib_constexpr_bitset >= 202207L
# define OAKNUT_CPU_FEATURES_CONSTEXPR constexpr
#else
# define OAKNUT_CPU_FEATURES_CONSTEXPR
#endif
namespace oaknut {
// NOTE: This file contains code that can be compiled on non-arm64 systems.
// For run-time CPU feature detection, include feature_detection.hpp
enum class CpuFeature {
#define OAKNUT_CPU_FEATURE(name) name,
#include "oaknut/impl/cpu_feature.inc.hpp"
#undef OAKNUT_CPU_FEATURE
};
constexpr std::size_t cpu_feature_count = 0
#define OAKNUT_CPU_FEATURE(name) +1
#include "oaknut/impl/cpu_feature.inc.hpp"
#undef OAKNUT_CPU_FEATURE
;
class CpuFeatures final {
public:
constexpr CpuFeatures() = default;
OAKNUT_CPU_FEATURES_CONSTEXPR explicit CpuFeatures(std::initializer_list<CpuFeature> features)
{
for (CpuFeature f : features) {
m_bitset.set(static_cast<std::size_t>(f));
}
}
constexpr bool has(CpuFeature feature) const
{
if (static_cast<std::size_t>(feature) >= cpu_feature_count)
return false;
return m_bitset[static_cast<std::size_t>(feature)];
}
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures& operator&=(const CpuFeatures& other) noexcept
{
m_bitset &= other.m_bitset;
return *this;
}
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures& operator|=(const CpuFeatures& other) noexcept
{
m_bitset |= other.m_bitset;
return *this;
}
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures& operator^=(const CpuFeatures& other) noexcept
{
m_bitset ^= other.m_bitset;
return *this;
}
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator~() const noexcept
{
CpuFeatures result;
result.m_bitset = ~m_bitset;
return result;
}
private:
using bitset = std::bitset<cpu_feature_count>;
friend OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator&(const CpuFeatures& a, const CpuFeatures& b) noexcept;
friend OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator|(const CpuFeatures& a, const CpuFeatures& b) noexcept;
friend OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator^(const CpuFeatures& a, const CpuFeatures& b) noexcept;
bitset m_bitset;
};
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator&(const CpuFeatures& a, const CpuFeatures& b) noexcept
{
CpuFeatures result;
result.m_bitset = a.m_bitset & b.m_bitset;
return result;
}
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator|(const CpuFeatures& a, const CpuFeatures& b) noexcept
{
CpuFeatures result;
result.m_bitset = a.m_bitset | b.m_bitset;
return result;
}
OAKNUT_CPU_FEATURES_CONSTEXPR CpuFeatures operator^(const CpuFeatures& a, const CpuFeatures& b) noexcept
{
CpuFeatures result;
result.m_bitset = a.m_bitset ^ b.m_bitset;
return result;
}
} // namespace oaknut