commit be8911789f193b689038bfaa0de958bf28d22364
Author: Brandon Bergren <git@bdragon.rtk0.net>
Date:   Wed Nov 20 12:53:10 2019 -0600

    QEMU-compatible version of the SPE accumulator save.

diff --git a/sys/powerpc/booke/spe.c b/sys/powerpc/booke/spe.c
index 9cc0f356561..19436de666f 100644
--- a/sys/powerpc/booke/spe.c
+++ b/sys/powerpc/booke/spe.c
@@ -83,7 +83,7 @@ save_vec_int(struct thread *td)
 #undef EVSTDW
 
 	__asm ( "evxor 0,0,0\n"
-		"evaddumiaaw 0,0\n"
+		"evmwumiaa 0,0,0\n"
 		"evstdd 0,0(%0)" :: "b"(&pcb->pcb_vec.spare[0]));
 	pcb->pcb_vec.vscr = mfspr(SPR_SPEFSCR);