UM32 implementation

This is ICFP 2006 um32 implementation in golang.

You can find more about contest here http://www.boundvariable.org/

Sandmark output

Machine intel i7-1260P

/usr/bin/time -v ./um32 sandmark.umz
....
SANDmark complete.
        Command being timed: "./um32 sandmark.umz"
        User time (seconds): 12.98
        System time (seconds): 0.17
        Percent of CPU this job got: 108%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:12.13
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 11448
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 199
        Minor (reclaiming a frame) page faults: 47044
        Voluntary context switches: 10324
        Involuntary context switches: 404
        Swaps: 0
        File system inputs: 111
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0

You don't need fancy structs for machine and instruction. Its simple machine that is encoded in sand platters by some cultist DUH.

Just GO and have some fun.

Running UM

go build will create um32 binary file

To unpack codex.umz you can do:

./um32 codex.umz | tee codex.um

Then open codex.um in your prefered editor and delete first few lines, you will see when to stop.

Tasks/notes

Intro:

Get familiar with UMIX, its commands, reading mails etc.

Figure out how to copy program into UMIX (umodem; similar to cat <<EOF )

hack.bas

You are informed via mail that someone is misusing guest account. Try exploiting it more!