diff options
Diffstat (limited to 'sys/i386/include/cpufunc.h')
| -rw-r--r-- | sys/i386/include/cpufunc.h | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/sys/i386/include/cpufunc.h b/sys/i386/include/cpufunc.h index ecb7e00..6a1235a 100644 --- a/sys/i386/include/cpufunc.h +++ b/sys/i386/include/cpufunc.h @@ -30,7 +30,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: cpufunc.h,v 1.44 1995/12/28 23:34:17 davidg Exp $ + * $Id: cpufunc.h,v 1.45 1996/01/16 07:42:08 bde Exp $ */ /* @@ -296,6 +296,36 @@ write_eflags(u_long ef) __asm __volatile("pushl %0; popfl" : : "r" (ef)); } +static __inline long long +rdmsr(unsigned msr) +{ + long long rv; + __asm __volatile(".byte 0x0f, 0x32" : "=A" (rv) : "c" (msr)); + return rv; +} + +static __inline long long +rdtsc(void) +{ + long long rv; + __asm __volatile(".byte 0x0f, 0x31" : "=A" (rv)); + return rv; +} + +static __inline long long +rdpmc(unsigned pmc) +{ + long long rv; + __asm __volatile(".byte 0x0f, 0x33" : "=A" (rv) : "c" (pmc)); + return rv; +} + +static __inline void +wrmsr(unsigned msr, long long newval) +{ + __asm __volatile(".byte 0x0f, 0x33" : : "A" (newval), "c" (msr)); +} + #else /* !__GNUC__ */ int bdb __P((void)); @@ -318,6 +348,10 @@ void pmap_update __P((void)); u_long read_eflags __P((void)); u_long rcr2 __P((void)); void write_eflags __P((u_long ef)); +quad_t rdmsr __P((unsigned msr)); +quad_t rdtsc __P((void)); +quad_t rdpmc __P((unsigned pmc)); +void wrmsr __P((unsigned msr, quad_t newval)); #endif /* __GNUC__ */ |
