numbers passed in instead of using a BEGIN construct. nawk didn't like
the hex escapes used there.
Fixes a problem reported by Shin'ichiro TAYA on port-powerpc.
Use "int(NUMBER)%256" instead of just "NUMBER" in the printf "%c"
statements in the awk script. nawk was appearing to refuse outputing
a 0 byte of the low eight bits of the number were 0 but any higher
bits were set.
walnut-mkimg.sh tested using gawk, nawk and mawk.
cd ${KERNSRCDIR}/${KERNARCHDIR}/compile && ${PRINTOBJDIR}
This is far simpler than the previous system, and more robust with
objdirs built via BSDOBJDIR.
The previous method of finding KERNOBJDIR when using BSDOBJDIR by
referencing _SRC_TOP_OBJ_ from another directory was extremely
fragile due to the depth first tree walk by <bsd.subdir.mk>, and
the caching of _SRC_TOP_OBJ_ (with MAKEOVERRIDES) which would be
empty on the *first* pass to create fresh objdirs.
This change requires adding sys/arch/*/compile/Makefile to create
the objdir in that directory, and descending into arch/*/compile
from arch/*/Makefile. Remove the now-unnecessary .keep_me files
whilst here.
Per lengthy discussion with Andrew Brown.
The first board to be included here is the port to the 405GP-based
Walnut evaluation board, which up until now lived in arch/walnut.
arch/walnut will go away soon, once all the remaining walnut-isms
in the tree have been dealt with.
