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
62 lines
1.5 KiB
C++
62 lines
1.5 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 <cstdint>
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#include <optional>
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#include <sys/auxv.h>
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#include <sys/param.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/id_registers.hpp"
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#include "oaknut/feature_detection/read_id_registers_directly.hpp"
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#ifndef AT_HWCAP
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# define AT_HWCAP 16
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#endif
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#ifndef AT_HWCAP2
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# define AT_HWCAP2 26
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#endif
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#if __FreeBSD_version < 1300114
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# error "Incompatible ABI change (incorrect HWCAP definitions on earlier FreeBSD versions)"
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#endif
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namespace oaknut {
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namespace detail {
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inline unsigned long getauxval(int aux)
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{
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unsigned long result = 0;
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if (::elf_aux_info(aux, &result, static_cast<int>(sizeof result)) == 0) {
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return result;
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}
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return 0;
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}
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} // namespace detail
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inline CpuFeatures detect_features_via_hwcap()
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{
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const unsigned long hwcap = detail::getauxval(AT_HWCAP);
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const unsigned long hwcap2 = detail::getauxval(AT_HWCAP2);
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return detect_features_via_hwcap(hwcap, hwcap2);
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}
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inline std::optional<id::IdRegisters> read_id_registers()
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{
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// HWCAP_CPUID is falsely not set on many FreeBSD kernel versions,
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// so we don't bother checking it.
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return id::read_id_registers_directly();
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}
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inline CpuFeatures detect_features()
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{
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return detect_features_via_hwcap();
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}
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} // namespace oaknut
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