ref: 8c20c6ec1933054386dd712158d2452da15d6ec7
dir: /sys/src/boot/bitsy/map/
defn acidmap()
{
	local dfoffset;
	dfoffset = map()[1][3];
	map({"text", _start, etext, 0x20});
	map({"data", etext+1, edata, dfoffset});
	print("Set map for plan 9 kernel image\n");
	print("btext ", _start, " etext ", etext, "\n");
}