ref: 51bcc63cc6bce3f9dab27cf6bd7155512b82c8fa
dir: /os/boot/arm1110/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"); }