Index: head/sys/powerpc/include/pmc_mdep.h
===================================================================
--- head/sys/powerpc/include/pmc_mdep.h
+++ head/sys/powerpc/include/pmc_mdep.h
@@ -14,8 +14,13 @@
 };
 
 /* Logging */
+#ifdef __powerpc64__
+#define	PMCLOG_READADDR		PMCLOG_READ64
+#define	PMCLOG_EMITADDR		PMCLOG_EMIT64
+#else
 #define	PMCLOG_READADDR		PMCLOG_READ32
 #define	PMCLOG_EMITADDR		PMCLOG_EMIT32
+#endif
 
 #define	mtpmr(reg, val)							\
 	__asm __volatile("mtpmr %0,%1" : : "K"(reg), "r"(val))