arch/x86_64/processor.c


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#include "arch/processor.h"
#include "arch/cpu.h"
#include "arch/x86_64/msr.h"

processor_t s_processors[PROCESSOR_MAX];
processor_t *proc_bsp = &s_processors[0];

extern void x86_64_lgdt(struct XDTR *gdtr);
extern void x86_64_flush_tss(void);
extern void x86_64_lidt(struct XDTR *idtr);

extern void gdt_setup(processor_t*);
extern void tss_setup(processor_t*);
extern void idt_setup(processor_t*);

void 
processor_setup(processor_t *proc)
{
    gdt_setup(proc);
    tss_setup(proc);
    idt_setup(proc);

    x86_64_lgdt(&proc->_gdtr);
    x86_64_lidt(&proc->_idtr);
    x86_64_flush_tss();

    msr_gsbase_write((uintptr_t)proc);
}

processor_t*
processor_list(void)
{
    return s_processors;
}

processor_t*
processor_current(void)
{
    return (processor_t*)msr_gsbase_read();
}