UM-32: Universal Machine

Instructions:

• To run the machine: $ ./um.py <codex>

  The results should be:

   $ ./um.py ./codex.umz
   self-check succeeded!
   enter decryption key:
  

• To run the unit tests: $ ./test_um.py

  The results should be:

   $ ./test_um.py
   .....................
   ----------------------------------------------------------------------
   Ran 21 tests in 0.002s
  
   OK
  

• To run the benchmark for the machine. sandmark.umz (provided) was downloaded from http://www.boundvariable.org/task.shtml.

   $ ./um.py sandmark.umz
  
   The results should be:
   $ ./um.py sandmark.umz
   trying to Allocate array of size 0..
   trying to Abandon size 0 allocation..
   trying to Allocate size 11..
   trying Array Index on allocated array..
   trying Amendment of allocated array..
   checking Amendment of allocated array..
   trying Alloc(a,a) and amending it..
   comparing multiple allocations..
   pointer arithmetic..
   check old allocation..
   simple tests ok!
   about to load program from some allocated array..
   success.
   verifying that the array and its copy are the same...
   success.
   testing aliasing..
   success.
   free after loadprog..
   success.
   loadprog ok.
    == SANDmark 19106 beginning stress test / benchmark.. ==
   100. 12345678.09abcdef
    == SANDmark 19106 beginning stress test / benchmark.. ==
   100. 12345678.09abcdef
   99.  6d58165c.2948d58d
   98.  0f63b9ed.1d9c4076
   97.  8dba0fc0.64af8685
   96.  583e02ae.490775c0
   95.  0353a77b.2f02685c
   ...