x86_util.c

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#include <sys/types.h>
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <stdarg.h>
#include <errno.h>

#include <object.h>
#include <list.h>
#include <thread.h>
#include <isr.h>
#include <x86_util.h>

int x86_util_get_ring(struct thread *tcb)
{
        struct pt_regs *reg;

        reg = (struct pt_regs *)tcb->esp;
        if (!reg) {
                return -EINVAL;
        }

        return reg->cs & 0x03;
}


/* End of a file */