Add the 2nd word of IA32 feature flags. This includes things such as SSE3.

Obtained from:	sys/amd64/amd64/identcpu.

sys/i386/i386/identcpu.c

@@ -688,6 +688,43 @@ printcpuinfo(void)
 			"\040PBE"	/* Pending Break Enable */
 			);
 
+			if (cpu_feature2 != 0)
+			printf("\n  Features2=0x%b", cpu_feature2,
+			"\020"
+			"\001SSE3"	/* SSE3 */
+			"\002<b1>"
+			"\003RSVD2>"	/* "Reserved" bit 2 */
+			"\004MON"	/* MONITOR/MWAIT Instructions */
+			"\005DS_CPL"	/* CPL Qualified Debug Store */
+			"\006<b5>"	/* Machine specific registers */
+			"\007<b6>"	/* Physical address extension */
+			"\010EST"	/* Enhanced SpeedStep */
+			"\011TM2"	/* Thermal Monitor 2 */
+			"\012<b9>"
+			"\013CNTX-ID"	/* L1 context ID available */
+			"\014<b11>"
+			"\015<b12>"
+			"\016CX16"	/* CMPXCHG16B Instruction */
+			"\017<b14>"
+			"\020<b15>"
+			"\021<b16>"
+			"\022<b17>"
+			"\023<b18>"
+			"\024<b19>"
+			"\025<b20>"
+			"\026<b21>"
+			"\027<b22>"
+			"\030<b23>"
+			"\031<b24>"
+			"\032<b25>"
+			"\033<b26>"
+			"\034<b27>"
+			"\035<b28>"
+			"\036<b29>"
+			"\037<b30>"
+			"\040<b31>"
+			);
+
 			/*
 			 * If this CPU supports hyperthreading then mention
 			 * the number of logical CPU's it contains.

sys/i386/i386/initcpu.c

@@ -79,6 +79,7 @@ SYSCTL_INT(_hw, OID_AUTO, instruction_sse, CTLFLAG_RD,
 /* Must *NOT* be BSS or locore will bzero these after setting them */
 int	cpu = 0;		/* Are we 386, 386sx, 486, etc? */
 u_int	cpu_feature = 0;	/* Feature flags */
+u_int	cpu_feature2 = 0;	/* Feature flags */
 u_int	cpu_high = 0;		/* Highest arg to CPUID */
 u_int	cpu_id = 0;		/* Stepping ID */
 u_int	cpu_procinfo = 0;	/* HyperThreading Info / Brand Index / CLFUSH */

sys/i386/i386/locore.s

@@ -681,6 +681,7 @@ trycpuid:	/* Use the `cpuid' instruction. */
 	movl	%eax,R(cpu_id)			# store cpu_id
 	movl	%ebx,R(cpu_procinfo)		# store cpu_procinfo
 	movl	%edx,R(cpu_feature)		# store cpu_feature
+	movl	%ecx,R(cpu_feature2)		# store cpu_feature2
 	rorl	$8,%eax				# extract family type
 	andl	$15,%eax
 	cmpl	$5,%eax

sys/i386/include/md_var.h

@@ -45,7 +45,7 @@ extern	long	Maxmem;
 extern	u_int	basemem;	/* PA of original top of base memory */
 extern	int	busdma_swi_pending;
 extern	u_int	cpu_exthigh;
-extern	u_int	cpu_feature;
+extern	u_int	cpu_feature, cpu_feature2;
 extern	u_int	cpu_fxsr;
 extern	u_int	cpu_high;
 extern	u_int	cpu_id;