lib/44793: src/lib/libpuffs doesn't work on __MACHINE_STACK_GROWS_UP machines

[nick.hudson%gmx.co.uk@localhost]

>Number:         44793
>Category:       lib
>Synopsis:       src/lib/libpuffs doesn't work on __MACHINE_STACK_GROWS_UP 
>machines
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 30 08:20:00 +0000 2011
>Originator:     Nick Hudson
>Release:        NetBSD 5.99.48
>Organization:
n/a
>Environment:
NetBSD stan 5.99.48 NetBSD 5.99.48 (GENERIC) #3: Tue Mar 29 09:15:03 BST 2011
nick@arthur:/u/obj/hp700/usr/src/sys/arch/hp700/compile/GENERIC hp700
>Description:
Placement of structures on stack and redzone creation are incorrect for 
__MACHINE_STACK_GROWS_UP machines
>How-To-Repeat:
cd /usr/tests
atf-run

Also, code inspection.
>Fix:
Conditional structure placement/redzone creation based on 
__MACHINE_STACK_GROWS_UP