diff options
| -rw-r--r-- | sys/amd64/include/cpufunc.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h index f234873..4b7df46 100644 --- a/sys/amd64/include/cpufunc.h +++ b/sys/amd64/include/cpufunc.h @@ -645,12 +645,36 @@ load_gs(u_short sel) #endif static __inline void +bare_lgdt(struct region_descriptor *addr) +{ + __asm __volatile("lgdt (%0)" : : "r" (addr)); +} + +static __inline void +sgdt(struct region_descriptor *addr) +{ + char *loc; + + loc = (char *)addr; + __asm __volatile("sgdt %0" : "=m" (*loc) : : "memory"); +} + +static __inline void lidt(struct region_descriptor *addr) { __asm __volatile("lidt (%0)" : : "r" (addr)); } static __inline void +sidt(struct region_descriptor *addr) +{ + char *loc; + + loc = (char *)addr; + __asm __volatile("sidt %0" : "=m" (*loc) : : "memory"); +} + +static __inline void lldt(u_short sel) { __asm __volatile("lldt %0" : : "r" (sel)); @@ -662,6 +686,15 @@ ltr(u_short sel) __asm __volatile("ltr %0" : : "r" (sel)); } +static __inline uint32_t +read_tr(void) +{ + u_short sel; + + __asm __volatile("str %0" : "=r" (sel)); + return (sel); +} + static __inline uint64_t rdr0(void) { |
