K 10
svn:author
V 7
rwatson
K 8
svn:date
V 27
2015-10-04T09:39:40.171516Z
K 7
svn:log
V 393
Add missing stack unwind information to several assembly functions on
ARMv6/7:

- Define _SAVE() macro to allow unwind data to be conditionally defined for
  ARM assembly code in the kernel.

- Use _SAVE() to provide unwind information for bcopy_page(), and two (of
  many) instances of copyin() and copyout().

Reviewed by:	andrew, imp
MFC after:	3 days
Sponsored by:	University of Cambridge

END