[src/trunk]: src/sys/arch/sparc64/sparc64 sun4v: add comment documenting the ...

[palle <palle%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0a8f49cae0a7
branches:  trunk
changeset: 448759:0a8f49cae0a7
user:      palle <palle%NetBSD.org@localhost>
date:      Fri Feb 08 19:26:25 2019 +0000

description:
sun4v: add comment documenting the contents of the %g2 register - no functional changes

diffstat:

 sys/arch/sparc64/sparc64/locore.s |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 0bc3da3dd2b9 -r 0a8f49cae0a7 sys/arch/sparc64/sparc64/locore.s
--- a/sys/arch/sparc64/sparc64/locore.s Fri Feb 08 13:37:46 2019 +0000
+++ b/sys/arch/sparc64/sparc64/locore.s Fri Feb 08 19:26:25 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: locore.s,v 1.415 2018/11/04 20:02:07 palle Exp $       */
+/*     $NetBSD: locore.s,v 1.416 2019/02/08 19:26:25 palle Exp $       */
 
 /*
  * Copyright (c) 2006-2010 Matthew R. Green
@@ -3034,7 +3034,7 @@
 
 #      btst    SUN4V_TLB_REAL_W|SUN4V_TLB_W, %g4       ! Is it a ref fault?
        mov     1, %g2
-       sllx    %g2, 61, %g2
+       sllx    %g2, 61, %g2                    ! %g2 is now SUN4V_TLB_REAL_W
        or      %g2, SUN4V_TLB_W, %g2
        btst    %g2, %g4
        bz,pn   %xcc, sun4v_datatrap                    ! No -- really fault
@@ -3263,7 +3263,7 @@
 
 #      btst    SUN4V_TLB_REAL_W|SUN4V_TLB_W, %g4       ! Is it a ref fault?
        mov     1, %g2
-       sllx    %g2, 61, %g2
+       sllx    %g2, 61, %g2                    ! %g2 is now SUN4V_TLB_REAL_W
        or      %g2, SUN4V_TLB_W, %g2
        btst    %g2, %g4
        bz,pn   %xcc, sun4v_tl1_ptbl_miss               ! No -- really fault