[src/nathanw_sa]: src/sys/arch/arm/arm32 Shave a couple of cycles off the beg...

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

details:   https://anonhg.NetBSD.org/src/rev/36a00fc7e558
branches:  nathanw_sa
changeset: 506705:36a00fc7e558
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Tue Jan 07 23:51:53 2003 +0000

description:
Shave a couple of cycles off the beginning of cpu_switch().

diffstat:

 sys/arch/arm/arm32/cpuswitch.S |  16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)

diffs (35 lines):

diff -r b7f00abdc286 -r 36a00fc7e558 sys/arch/arm/arm32/cpuswitch.S
--- a/sys/arch/arm/arm32/cpuswitch.S    Tue Jan 07 22:12:09 2003 +0000
+++ b/sys/arch/arm/arm32/cpuswitch.S    Tue Jan 07 23:51:53 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpuswitch.S,v 1.3.2.27 2003/01/03 21:19:10 thorpej Exp $       */
+/*     $NetBSD: cpuswitch.S,v 1.3.2.28 2003/01/07 23:51:53 thorpej Exp $       */
 
 /*
  * Copyright (c) 1994-1998 Mark Brinicombe.
@@ -186,19 +186,17 @@
        stmfd   sp!, {r4-r7, lr}
 
        /*
-        * Get the current lwp and indicate that there is no longer
-        * a valid process (curlwp = 0).  Zero the current PCB pointer
-        * while we're at it.
+        * Indicate that there is no longer a valid process (curlwp = 0).
+        * Zero the current PCB pointer while we're at it.
         */
        ldr     r7, .Lcurlwp
        ldr     r6, .Lcurpcb
-       mov     r0, #0x00000000
-       ldr     r1, [r7]                /* r1 = curproc */
-       str     r0, [r7]                /* curproc = NULL */
-       str     r0, [r6]                /* curpcb = NULL */
+       mov     r2, #0x00000000
+       str     r2, [r7]                /* curproc = NULL */
+       str     r2, [r6]                /* curpcb = NULL */
 
        /* stash the old proc while we call functions */
-       mov     r5, r1
+       mov     r5, r0
 
 #if defined(MULTIPROCESSOR) || defined(LOCKDEBUG)
        /* release the sched_lock before handling interrupts */