mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 13:38:11 +00:00
bc7ec02a82
This will make it possible to add many, many more CPU features - more than the current limit 32 and later limit of 64 if we stick with an enum class to be specific :^)
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ArbitrarySizedEnum.h>
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#include <AK/Types.h>
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#include <AK/UFixedBigInt.h>
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#include <AK/Platform.h>
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VALIDATE_IS_X86()
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namespace Kernel {
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class CPUID {
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public:
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explicit CPUID(u32 function, u32 ecx = 0)
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{
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asm volatile("cpuid"
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: "=a"(m_eax), "=b"(m_ebx), "=c"(m_ecx), "=d"(m_edx)
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: "a"(function), "c"(ecx));
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}
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u32 eax() const { return m_eax; }
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u32 ebx() const { return m_ebx; }
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u32 ecx() const { return m_ecx; }
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u32 edx() const { return m_edx; }
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private:
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u32 m_eax { 0xffffffff };
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u32 m_ebx { 0xffffffff };
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u32 m_ecx { 0xffffffff };
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u32 m_edx { 0xffffffff };
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};
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AK_MAKE_ARBITRARY_SIZED_ENUM(CPUFeature, u128,
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NX = CPUFeature(1u) << 0u,
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PAE = CPUFeature(1u) << 1u,
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PGE = CPUFeature(1u) << 2u,
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RDRAND = CPUFeature(1u) << 3u,
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RDSEED = CPUFeature(1u) << 4u,
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SMAP = CPUFeature(1u) << 5u,
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SMEP = CPUFeature(1u) << 6u,
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SSE = CPUFeature(1u) << 7u,
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TSC = CPUFeature(1u) << 8u,
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RDTSCP = CPUFeature(1u) << 9u,
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CONSTANT_TSC = CPUFeature(1u) << 10u,
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NONSTOP_TSC = CPUFeature(1u) << 11u,
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UMIP = CPUFeature(1u) << 12u,
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SEP = CPUFeature(1u) << 13u,
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SYSCALL = CPUFeature(1u) << 14u,
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MMX = CPUFeature(1u) << 15u,
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SSE2 = CPUFeature(1u) << 16u,
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SSE3 = CPUFeature(1u) << 17u,
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SSSE3 = CPUFeature(1u) << 18u,
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SSE4_1 = CPUFeature(1u) << 19u,
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SSE4_2 = CPUFeature(1u) << 20u,
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XSAVE = CPUFeature(1u) << 21u,
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AVX = CPUFeature(1u) << 22u,
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FXSR = CPUFeature(1u) << 23u,
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LM = CPUFeature(1u) << 24u,
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HYPERVISOR = CPUFeature(1u) << 25u,
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PAT = CPUFeature(1u) << 26u,
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__End = CPUFeature(1u) << 27u);
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}
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