99c0a73f91
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
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
// SPDX-FileCopyrightText: Copyright (c) 2023 merryhime <https://mary.rs>
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// SPDX-License-Identifier: MIT
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#pragma once
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#include <array>
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#include <cstddef>
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#include <cstdint>
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#include <optional>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include "oaknut/feature_detection/cpu_feature.hpp"
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#include "oaknut/feature_detection/feature_detection_hwcaps.hpp"
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#include "oaknut/feature_detection/feature_detection_idregs.hpp"
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#include "oaknut/feature_detection/id_registers.hpp"
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namespace oaknut {
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namespace detail {
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inline std::uint64_t read_id_register(int index)
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{
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uint64_t result = 0;
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size_t result_size = sizeof(result);
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std::array<int, 2> mib{CTL_MACHDEP, index};
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if (sysctl(mib.data(), mib.size(), &result, &result_size, nullptr, 0) < 0)
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return 0;
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return result;
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}
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} // namespace detail
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inline std::optional<id::IdRegisters> read_id_registers()
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{
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// See OpenBSD source: sys/arch/arm64/include/cpu.h
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return id::IdRegisters{
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std::nullopt, // No easy way of getting MIDR_EL1 other than reading /proc/cpu
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id::Pfr0Register{detail::read_id_register(8)}, // CPU_ID_AA64PFR0
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id::Pfr1Register{detail::read_id_register(9)}, // CPU_ID_AA64PFR1
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id::Pfr2Register{0},
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id::Zfr0Register{detail::read_id_register(11)}, // CPU_ID_AA64ZFR0
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id::Smfr0Register{detail::read_id_register(10)}, // CPU_ID_AA64SMFR0
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id::Isar0Register{detail::read_id_register(2)}, // CPU_ID_AA64ISAR0
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id::Isar1Register{detail::read_id_register(3)}, // CPU_ID_AA64ISAR1
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id::Isar2Register{detail::read_id_register(4)}, // CPU_ID_AA64ISAR2
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id::Isar3Register{0},
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id::Mmfr0Register{detail::read_id_register(5)}, // CPU_ID_AA64MMFR0
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id::Mmfr1Register{detail::read_id_register(6)}, // CPU_ID_AA64MMFR1
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id::Mmfr2Register{detail::read_id_register(7)}, // CPU_ID_AA64MMFR2
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id::Mmfr3Register{0},
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id::Mmfr4Register{0},
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};
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}
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inline CpuFeatures detect_features()
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{
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return detect_features_via_id_registers(*read_id_registers());
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}
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} // namespace oaknut
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