commit 0cb9160baf1fba6944d9b96bef153cfcd8dad962
Author: Brandon Bergren <git@bdragon.rtk0.net>
Date:   Thu Jun 6 16:04:59 2019 -0500

    show slb command

diff --git a/sys/powerpc/aim/mmu_oea64.c b/sys/powerpc/aim/mmu_oea64.c
index 7ad86d5f189..eef17e12b80 100644
--- a/sys/powerpc/aim/mmu_oea64.c
+++ b/sys/powerpc/aim/mmu_oea64.c
@@ -45,6 +45,7 @@ __FBSDID("$FreeBSD$");
  * correct.
  */
 
+#include "opt_ddb.h"
 #include "opt_kstack_pages.h"
 
 #include <sys/param.h>
@@ -2932,3 +2933,34 @@ moea64_scan_init(mmu_t mmu)
 	}
 }
 
+#if defined(DDB) && defined(__powerpc64__)
+#include <sys/kdb.h>
+#include <ddb/ddb.h>
+
+DB_SHOW_COMMAND(slb, moea64_show_slb)
+{
+        struct slb *cache;
+//        struct slb entry;
+        uint64_t slbv, slbe;
+        uint64_t i;
+ 
+/*
+struct slb {
+        uint64_t        slbv;
+        uint64_t        slbe;
+};
+*/
+
+        cache = PCPU_GET(aim.slb);
+        //esid = esid_from_va(va);
+
+        //slbe = slbe_from_esid(esid) | SLBE_VALID;
+ 
+        for (i = 0; i < n_slbs; i++) {
+		__asm __volatile ("slbmfev %0,%1" : "=r"(slbv) : "r"(i));
+		__asm __volatile ("slbmfee %0,%1" : "=r"(slbe) : "r"(i));
+		db_printf("IDX: %ld SLBV: 0x%lx SLBE: 0x%lx (HW SLBV: 0x%lx SLBE: 0x%lx)\n",
+			i, cache[i].slbv, cache[i].slbe, slbv, slbe); 
+        }
+}
+#endif