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65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
#ifndef __FENNIX_KERNEL_SMP_H__
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#define __FENNIX_KERNEL_SMP_H__
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#include <types.h>
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#include <atomic.hpp>
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#include <task.hpp>
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/** @brief Maximum supported number of CPU cores by the kernel */
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#define MAX_CPU 256
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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(__amd64__)
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CPU::x64::FXState *FPU;
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/* TODO */
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#elif defined(__i386__)
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#elif defined(__aarch64__)
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#endif
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};
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struct CPUData
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{
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/** @brief Used by syscall handler */
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uint8_t *SystemCallStack; /* gs+0x0 */
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/** @brief Used by syscall handler */
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uintptr_t TempStack; /* gs+0x8 */
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/** @brief Used by CPU */
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uintptr_t Stack;
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/** @brief CPU ID. */
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long ID;
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/** @brief Local CPU error code. */
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long ErrorCode;
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/** @brief Current running process */
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Atomic<Tasking::PCB *> CurrentProcess;
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/** @brief Current running thread */
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Atomic<Tasking::TCB *> CurrentThread;
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/** @brief Architecture-specific data. */
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CPUArchData Data;
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/** @brief 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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/** @brief Is CPU online? */
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bool IsActive;
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};
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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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