Author: mmacy
Date: Thu Jun 7 00:54:11 2018
New Revision: 334746
URL: https://svnweb.freebsd.org/changeset/base/334746
Log:
cpufunc: add rdtscp for x86
Modified:
head/sys/amd64/include/cpufunc.h
head/sys/i386/include/cpufunc.h
Modified: head/sys/amd64/include/cpufunc.h
==============================================================================
--- head/sys/amd64/include/cpufunc.h Thu Jun 7 00:24:10 2018
(r334745)
+++ head/sys/amd64/include/cpufunc.h Thu Jun 7 00:54:11 2018
(r334746)
@@ -386,6 +386,15 @@ rdtsc(void)
return (low | ((uint64_t)high << 32));
}
+static __inline uint64_t
+rdtscp(void)
+{
+ uint32_t low, high;
+
+ __asm __volatile("rdtscp" : "=a" (low), "=d" (high));
+ return (low | ((uint64_t)high << 32));
+}
+
static __inline uint32_t
rdtsc32(void)
{
Modified: head/sys/i386/include/cpufunc.h
==============================================================================
--- head/sys/i386/include/cpufunc.h Thu Jun 7 00:24:10 2018
(r334745)
+++ head/sys/i386/include/cpufunc.h Thu Jun 7 00:54:11 2018
(r334746)
@@ -368,6 +368,15 @@ rdtsc(void)
return (rv);
}
+static __inline uint64_t
+rdtscp(void)
+{
+ uint64_t rv;
+
+ __asm __volatile("rdtscp" : "=A" (rv));
+ return (rv);
+}
+
static __inline uint32_t
rdtsc32(void)
{
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