43 lines
757 B
C
43 lines
757 B
C
#ifndef _VISOR_IDT_H_
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#define _VISOR_IDT_H_
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#include <stdint.h>
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__attribute__ ((packed))
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struct intdescr {
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uint16_t offset0;
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uint16_t seg;
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uint8_t ist;
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uint8_t access;
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uint16_t offset1;
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uint32_t offset2;
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uint32_t reserved;
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};
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__attribute__ ((packed))
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struct IDTR {
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uint16_t limit;
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struct intdescr *base;
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};
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static inline struct IDTR
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storeidt(void)
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{
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struct IDTR idtr;
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__asm__ ("sidt %0\n\t" : "=m"(idtr));
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return idtr;
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}
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static inline void
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setintdescr(struct intdescr *descr, uint64_t offset, uint16_t seg, uint8_t ist, uint8_t access)
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{
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descr->offset0 = offset;
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descr->seg = seg;
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descr->ist = ist;
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descr->access = access;
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descr->offset1 = offset >> 16;
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descr->offset2 = offset >> 32;
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descr->reserved = 0;
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}
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#endif
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