disdump, limbo, wm/rt: assembly output doesn't work with asm(1)

[mehlon]

It'd be nice if the files generated by disdump(1), limbo(1) and wm/rt(1) could be readily built with asm(1). However this currently doesn't work, because these programs don't always spit out valid syntax.
Disdump only outputs the instructions, but not additional linker directives.
For instance: disdump generates this for /dis/pause.dis:

newcw     , $0, 44(fp)
recv      44(fp), 40(fp)
movp      0(mp), 44(fp)
ret       

limbo -S /appl/cmd/pause.b generates this:

#0
	newcw	$0,44(fp)
	recv	44(fp),40(fp)
	movp	0(mp),44(fp)
	ret	
	entry	0, 1
	desc	$0,4,"80"
	desc	$1,48,"00d0"
	var	@mp,4
	module	Pause
	link	1,0,0x4244b354,"init"
	ldts	@ldt,0
	source	"/appl/cmd/pause.b"

wm/rt generates this if you select "Write .s file":

#0
	newcw     , $0, 44(fp)
	recv      44(fp), 40(fp)
	movp      0(mp), 44(fp)
	ret       
	entry	0,1
	desc $0, 4, "80"
	desc $1, 48, "00d0"
	var @mp, 4
	module	Pause
	link 1,0, 0x4244b354, "init"

The code from disdump cannot be built with asm(1) because there's a syntax error on the first line.
The line should be newcw 44(fp)
The code from limbo -S has the same syntax error.
The code from wm/rt also has this error.

Using code from wm/rt would be useful here.