Function SMPEntry

Kernel/src/arch/x86_64/smp.cpp:39–67

    CPU* cpus[256];
    unsigned processorCount = 1;
    tss_t tss1 __attribute__((aligned(16)));

    void SMPEntry(uint16_t id){
        CPU* cpu = cpus[id];
        cpu->currentThread = nullptr;
        cpu->runQueueLock = 0;
        SetCPULocal(cpu);

        cpu->gdt = Memory::KernelAllocate4KPages(1);//kmalloc(GDT64Pointer64.limit + 1); // Account for the 1 subtracted from limit
        Memory::KernelMapVirtualMemory4K(Memory::AllocatePhysicalMemoryBlock(), (uintptr_t)cpu->gdt, 1);
        memcpy(cpu->gdt, (void*)GDT64Pointer64.base, GDT64Pointer64.limit + 1); // Make a copy of the GDT
        cpu->gdtPtr = {.limit = GDT64Pointer64.limit, .base = (uint64_t)cpu->gdt};

        asm volatile("lgdt (%%rax)" :: "a"(&cpu->gdtPtr));

        idt_flush();

        TSS::InitializeTSS(&cpu->tss, cpu->gdt);

        APIC::Local::Enable();

        cpu->runQueue = new FastList<thread_t*>();
        
        doneInit = true;

        asm("sti");

        for(;;);
    }

    void PrepareTrampoline(){
        memcpy((void*)SMP_TRAMPOLINE_ENTRY, &_binary_smptrampoline_bin_start, ((uint64_t)&_binary_smptrampoline_bin_size));