35 lines
688 B
C
35 lines
688 B
C
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#include "types.h"
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#include "param.h"
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#include "mmu.h"
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#include "proc.h"
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#include "defs.h"
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#include "x86.h"
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struct Gatedesc idt[256];
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struct Pseudodesc idt_pd = { 0, sizeof(idt) - 1, (unsigned) &idt };
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extern unsigned vectors[]; /* vectors.S, array of 256 entry point addresses */
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extern void trapenter();
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extern void trapenter1();
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void
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tinit()
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{
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int i;
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for(i = 0; i < 256; i++){
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SETGATE(idt[i], 1, SEG_KCODE << 3, vectors[i], 3);
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}
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asm volatile("lidt %0" : : "g" (idt_pd.pd_lim));
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}
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void
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trap(struct Trapframe *tf)
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{
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/* which process are we running? */
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cprintf("trap %d tf %x\n", tf->tf_trapno, tf);
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while(1)
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;
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// XXX probably ought to lgdt on trap return
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}
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