[src/matt-nb6-plus]: src/sys/arch/arm/cortex Busy wait in a WFI loop until to...

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

details:   https://anonhg.NetBSD.org/src/rev/101c6acd7e39
branches:  matt-nb6-plus
changeset: 774565:101c6acd7e39
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Mar 12 21:20:04 2013 +0000

description:
Busy wait in a WFI loop until told to exit.

diffstat:

 sys/arch/arm/cortex/a9_mpsubr.S |  11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diffs (32 lines):

diff -r 20d2cd6834a2 -r 101c6acd7e39 sys/arch/arm/cortex/a9_mpsubr.S
--- a/sys/arch/arm/cortex/a9_mpsubr.S   Tue Feb 19 07:19:40 2013 +0000
+++ b/sys/arch/arm/cortex/a9_mpsubr.S   Tue Mar 12 21:20:04 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: a9_mpsubr.S,v 1.3.6.2 2012/11/28 22:40:25 matt Exp $   */
+/*     $NetBSD: a9_mpsubr.S,v 1.3.6.3 2013/03/12 21:20:04 matt Exp $   */
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -367,17 +367,18 @@
        /* Now we will wait for someone tell this cpu to start running */
 #ifdef MULTIPROCESSOR
        ldr     r0, .Lcpu_mbox
-#else
-       cmp     r0, r0
 #endif
 2:
 #ifdef MULTIPROCESSOR
        dmb
        ldr     r2, [r0]
        tst     r2, r5
+       wfieq
+       beq     2b
+#else
+       wfi
+       b       2b
 #endif
-       @wfeeq
-       beq     2b
 
 #ifdef MULTIPROCESSOR
 3:     XPUTC(#98)