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Kernel/include/smp.hpp
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Kernel/include/smp.hpp
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __FENNIX_KERNEL_SMP_H__
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#define __FENNIX_KERNEL_SMP_H__
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#include <task.hpp>
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#include <kexcept/cxxabi.h>
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#include <types.h>
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#include <atomic>
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/** @brief Maximum supported number of CPU cores by the kernel */
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#define MAX_CPU 255
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#define CPU_DATA_CHECKSUM 0xC0FFEE
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struct CPUArchData
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{
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#if defined(a64)
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__aligned(16) CPU::x64::FXState FPU{};
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#elif defined(a32)
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__aligned(16) CPU::x32::FXState FPU{};
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#elif defined(aa64)
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#endif
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};
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struct CPUData
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{
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/** Used by CPU */
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uintptr_t Stack;
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/** CPU ID. */
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int ID;
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/** Local CPU error code. */
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long ErrorCode;
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/** Current running process */
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std::atomic<Tasking::PCB *> CurrentProcess;
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/** Current running thread */
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std::atomic<Tasking::TCB *> CurrentThread;
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/** Exception information. */
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ExceptionInfo Exception;
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/** Architecture-specific data. */
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CPUArchData Data;
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/** Checksum. Used to verify the integrity of the data. Must be equal to CPU_DATA_CHECKSUM (0xC0FFEE). */
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int Checksum;
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/** Is CPU online? */
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bool IsActive;
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} __aligned(16);
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CPUData *GetCurrentCPU();
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CPUData *GetCPU(long ID);
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namespace SMP
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{
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extern int CPUCores;
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void Initialize(void *madt);
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}
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#endif // !__FENNIX_KERNEL_SMP_H__
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