Delete obsolete /* ARGSUSED */ lint comments.

ok miod@ millert@

If the kernel panics due to SMEP or SMAP, print correct stack trace
and pass information to ddb. This helps to debug kernel NULL pointer
function calls.
input guenther@; OK kettenis@

db_addr_t -> vaddr_t

ok deraadt@

Substitute boolean_t/TRUE/FALSE by int/1/0.

ok dlg@, jasper@, anton@

Printing hex values with right adjustment makes it easier to compare
corresponding digits. So the change the ddb x/x output.
OK sashan@ deraadt@ visa@ mpi@

Add the examine /m format, "display in unsigned hex with character
dump at the end of each line", which has always been documented but
not implemented.

Mostly from NetBSD, but I fixed the column ali

Add the examine /m format, "display in unsigned hex with character
dump at the end of each line", which has always been documented but
not implemented.

Mostly from NetBSD, but I fixed the column alignment code.

ok mlarkin@, pirofti@

show more ...

per trending style, add continue to empty loops.
ok mglocker

Do not expose private functions.

remove uneeded proc.h includes
ok mpi@ kspillner@

These do not need the extremely poorly named uvm/uvm_extern.h (which
pulls in the universe). occasionally they need sys/systm.h

When multiple display modifiers are specified on a ddb examine command, do
not advance the address until the last modifier has been processed. This
allows sequences like `x/xi address,count' to yield

When multiple display modifiers are specified on a ddb examine command, do
not advance the address until the last modifier has been processed. This
allows sequences like `x/xi address,count' to yield meaningful results.
As a bonus, handle `i' and `I' modifiers last, so that I don't have to
fight my habit of using `x/ix' instead of `x/xi'.

show more ...

Fix `print $registername' on 64 bit platforms.

temporary ddb buffers need to be a bit larger on 64 bit systems to cope with
some radix configurations.

A few %n/%r/%z format strings were missed, convert these to db_format().

Use db_format() instead of ddb-specific format specifiers; no functional
change inteded.
ok ray@

Disable x/q functionnality on 32bit platforms, because the examination code
is not supposed to work on values larger than db_expr_t.

ansi/deregister. No binary change.

kill unbounded string op. deraadt ok

Add a an argument to db_printsym that specifies the printf function
we'll use for printing the information.
miod@ ok

Replace inclusion of <vm/foo.h> with the correct <uvm/bar.h> when necessary.
(Look ma, I might have broken the tree)

Include vm/vm.h everywhere it is needed to get at boolean_t (I would prefer
to have it in sys/types.h but that is problematic). Some KNF.

Do not wrap lines so often, much prettier x output

64 bit fixes

Make compile on OpenBSD/alpha. MD stuff is still missing though.

partial sync with netbsd 960418, more to come