/* evec.c -- initevec, doevec */

#include 
#include 

/*#define STKTRACE*/
/*#define REGDUMP*/

/*
 * The girmask is used as a mask for interrupts that don't have a
 * handler set. disable() & restore() are OR-ed with it to get the
 * mask actually used.
 */
uint16  girmask;

extern  void    setirmask(void);
extern  struct  idt idt[NID];
extern  struct  segtr idtr;
extern  long    defevec[];
extern  void    userret(void);
extern  void    init8259();
extern  int     lidt();

/*------------------------------------------------------------------------
 * initevec - initialize exception vectors to a default handler
 *------------------------------------------------------------------------
 */
int32   initevec()
{
        int     i;

        girmask = 0;    /* until vectors initialized */

        for (i=0; iigd_loffset = handler;
        pidt->igd_segsel = 0x8;         /* kernel code segment */
        pidt->igd_mbz = 0;
        pidt->igd_type = IGDT_TRAPG;
        pidt->igd_dpl = 0;
        pidt->igd_present = 1;
        pidt->igd_hoffset = handler >> 16;

        if (xnum > 31 && xnum < 48) {
                /* enable the interrupt in the global IR mask */
                xnum -= 32;
                girmask &= ~(1<= 10 && inum <= 14)) {
                kprintf("error code %08x (%u)\n", *sp, *sp);
                sp--;
        }
        sp--;   /* skip FP for Xint call */
        kprintf("register dump:\n");
        kprintf("eax %08X (%u)\n", *sp, *sp);
        sp--;
        kprintf("ecx %08X (%u)\n", *sp, *sp);
        sp--;
        kprintf("edx %08X (%u)\n", *sp, *sp);
        sp--;
        kprintf("ebx %08X (%u)\n", *sp, *sp);
        sp--;
        kprintf("esp %08X (%u)\n", *sp, *sp);
        sp--;
        kprintf("ebp %08X (%u)\n", *sp, *sp);
        fp = sp;
        sp--;
        kprintf("esi %08X (%u)\n", *sp, *sp);
        sp--;
        kprintf("edi %08X (%u)\n", *sp, *sp);
        sp--;
#endif // REGDUMP
#ifdef STKTRACE
        stacktrace(currpid);
#endif // STKTRACE

        panic("Trap processing complete...\n");
        restore(mask);
}