Merge remote-tracking branch 'Kernel/master'

Kernel/include/smp.hpp

@@ -0,0 +1,79 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef __FENNIX_KERNEL_SMP_H__
+#define __FENNIX_KERNEL_SMP_H__
+
+#include <task.hpp>
+#include <kexcept/cxxabi.h>
+#include <types.h>
+#include <atomic>
+
+/** @brief Maximum supported number of CPU cores by the kernel */
+#define MAX_CPU 255
+#define CPU_DATA_CHECKSUM 0xC0FFEE
+
+struct CPUArchData
+{
+#if defined(a64)
+	__aligned(16) CPU::x64::FXState FPU{};
+#elif defined(a32)
+	__aligned(16) CPU::x32::FXState FPU{};
+#elif defined(aa64)
+#endif
+};
+
+struct CPUData
+{
+	/** Used by CPU */
+	uintptr_t Stack;
+
+	/** CPU ID. */
+	int ID;
+
+	/** Local CPU error code. */
+	long ErrorCode;
+
+	/** Current running process */
+	std::atomic<Tasking::PCB *> CurrentProcess;
+
+	/** Current running thread */
+	std::atomic<Tasking::TCB *> CurrentThread;
+
+	/** Exception information. */
+	ExceptionInfo Exception;
+
+	/** Architecture-specific data. */
+	CPUArchData Data;
+
+	/** Checksum. Used to verify the integrity of the data. Must be equal to CPU_DATA_CHECKSUM (0xC0FFEE). */
+	int Checksum;
+
+	/** Is CPU online? */
+	bool IsActive;
+} __aligned(16);
+
+CPUData *GetCurrentCPU();
+CPUData *GetCPU(long ID);
+
+namespace SMP
+{
+	extern int CPUCores;
+	void Initialize(void *madt);
+}
+
+#endif // !__FENNIX_KERNEL_SMP_H__