38 lines
510 B
C
38 lines
510 B
C
#ifndef _VISOR_CR_H_
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#define _VISOR_CR_H_
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#include <stdint.h>
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#define CR4_VMXE (1 << 13)
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static inline uint64_t
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readcr0(void)
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{
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uint64_t v;
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__asm__ ("mov %%cr0, %0\n\t" : "=a"(v));
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return v;
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}
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static inline uint64_t
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readcr3(void)
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{
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uint64_t v;
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__asm__ ("mov %%cr3, %0\n\t" : "=a"(v));
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return v;
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}
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static inline uint64_t
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readcr4(void)
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{
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uint64_t v;
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__asm__ ("mov %%cr4, %0\n\t" : "=a"(v));
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return v;
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}
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static inline void
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writecr4(uint64_t v)
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{
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__asm__ ("mov %0, %%cr4\n\t" :: "a"(v));
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}
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#endif
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