mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <mesosphere/kern_common.hpp>
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#ifdef ATMOSPHERE_ARCH_ARM64
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#include <mesosphere/arch/arm64/kern_cpu.hpp>
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namespace ams::kern::cpu {
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using namespace ams::kern::arch::arm64::cpu;
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}
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#else
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#error "Unknown architecture for CPU"
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#endif
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#ifdef ATMOSPHERE_BOARD_NINTENDO_NX
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#include <mesosphere/board/nintendo/nx/kern_cpu_map.hpp>
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namespace ams::kern::cpu {
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using namespace ams::kern::board::nintendo::nx::impl::cpu;
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}
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#elif defined(ATMOSPHERE_BOARD_QEMU_VIRT)
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#include <mesosphere/board/qemu/virt/kern_cpu_map.hpp>
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namespace ams::kern::cpu {
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using namespace ams::kern::board::qemu::virt::impl::cpu;
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}
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#else
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#error "Unknown board for CPU Map"
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#endif
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namespace ams::kern {
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namespace cpu {
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static constexpr inline size_t NumVirtualCores = BITSIZEOF(u64);
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static constexpr inline u64 VirtualCoreMask = [] {
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u64 mask = 0;
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for (size_t i = 0; i < NumVirtualCores; ++i) {
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mask |= (UINT64_C(1) << i);
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}
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return mask;
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}();
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static constexpr inline u64 ConvertVirtualCoreMaskToPhysical(u64 v_core_mask) {
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u64 p_core_mask = 0;
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while (v_core_mask != 0) {
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const u64 next = util::CountTrailingZeros(v_core_mask);
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v_core_mask &= ~(static_cast<u64>(1) << next);
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p_core_mask |= (static_cast<u64>(1) << cpu::VirtualToPhysicalCoreMap[next]);
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}
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return p_core_mask;
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}
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}
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static_assert(cpu::NumCores <= cpu::NumVirtualCores);
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static_assert(util::size(cpu::VirtualToPhysicalCoreMap) == cpu::NumVirtualCores);
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}
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