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Rework r219679. Always check CPU class at run-time to make it predictable.

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Unfortunately, it pulls in <machine/cputypes.h> but it is small enough and
namespace pollution is minimal, I hope.

Pointed out by:	bde
Pointy hat:	jkim
This commit is contained in:
Jung-uk Kim 2011-03-16 16:09:08 +00:00
parent e98198cdbb
commit 2ffa4044e9
1 changed files with 5 additions and 5 deletions
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10
sys/i386/include/cpu.h
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@ -39,6 +39,7 @@
/*
* Definitions unique to i386 cpu support.
*/
#include <machine/cputypes.h>
#include <machine/psl.h>
#include <machine/frame.h>
#include <machine/segments.h>
@ -69,14 +70,13 @@ void swi_vm(void *);
static __inline uint64_t
get_cyclecount(void)
{
#if defined(I486_CPU) || defined(KLD_MODULE)
struct bintime bt;
binuptime(&bt);
return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
#else
if (cpu_class == CPUCLASS_486) {
binuptime(&bt);
return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
}
return (rdtsc());
#endif
}
#endif