[src/trunk]: src/sys/arch/arm/arm32 After calling lwp_startup, set fp to 0 to...

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

details:   https://anonhg.NetBSD.org/src/rev/865ed695140f
branches:  trunk
changeset: 781412:865ed695140f
user:      matt <matt%NetBSD.org@localhost>
date:      Wed Sep 05 00:11:20 2012 +0000

description:
After calling lwp_startup, set fp to 0 to terminate call stack.

diffstat:

 sys/arch/arm/arm32/cpuswitch.S |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r a34eef418983 -r 865ed695140f sys/arch/arm/arm32/cpuswitch.S
--- a/sys/arch/arm/arm32/cpuswitch.S    Wed Sep 05 00:10:11 2012 +0000
+++ b/sys/arch/arm/arm32/cpuswitch.S    Wed Sep 05 00:11:20 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpuswitch.S,v 1.71 2012/09/01 22:20:52 matt Exp $      */
+/*     $NetBSD: cpuswitch.S,v 1.72 2012/09/05 00:11:20 matt Exp $      */
 
 /*
  * Copyright 2003 Wasabi Systems, Inc.
@@ -89,7 +89,7 @@
 #include <machine/asm.h>
 #include <machine/cpu.h>
 
-       RCSID("$NetBSD: cpuswitch.S,v 1.71 2012/09/01 22:20:52 matt Exp $")
+       RCSID("$NetBSD: cpuswitch.S,v 1.72 2012/09/05 00:11:20 matt Exp $")
 
 /* LINTSTUB: include <sys/param.h> */
        
@@ -335,6 +335,7 @@
         */
        bl      _C_LABEL(lwp_startup)
 
+       mov     fp, #0                  /* top stack frame */
        mov     r0, r5
        mov     r1, sp
 #ifdef _ARM_ARCH_5