ruby-x/rubyx
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
2,693 Commits 2 Branches 0 Tags 5.6 MiB
d0036ed95b
Commit Graph

368 Commits

Author SHA1 Message Date
Torsten Ruger
46fbfb7101 adds the simple object dependency 
where the next object is dependent on the previous one
and just behind it, the padded_length away
 2018-05-31 20:41:04 +03:00
Torsten Ruger
21a9c56ba9 change position event code to use util 
general purpose event fireing
can then be used for several event types
 2018-05-31 19:05:53 +03:00
Torsten Ruger
2544bc5a85 move position module to folder 2018-05-31 19:01:10 +03:00
Torsten Ruger
49849939a1 little event mechanism for changed positions 2018-05-31 17:01:23 +03:00
Torsten Ruger
67100a3ef8 write adjusted address 
and rename integer to address in label
1k hurray
 2018-05-31 00:07:58 +03:00
Torsten Ruger
e39e96f646 create return address as own class to hold return addresses 
to distinguish from integer, which does not need adjusting
 2018-05-30 23:49:01 +03:00
Torsten Ruger
e86ca5ae9d integer was wrong padded§ length 
or rather right (2 as should be and will be)
but currently we use next AND value + type means 3, rounded 4
because we can’t swap types at compile time (as is planned at runtime,
we use next OR value)
 2018-05-30 14:55:17 +03:00
Torsten Ruger
53107d3ef8 reducing the label's int for return 
placing the raw address in the register to jump to
puts the extra instruction at the risc level (not arm), thus changing a
lot of (brittle?) tests
 2018-05-30 12:54:40 +03:00
Torsten Ruger
01a2911483 using label int in interpreter 2018-05-30 11:49:29 +03:00
Torsten Ruger
0dc89c772a get the label int to work consistently 
still need to use it in the return
 2018-05-30 10:54:18 +03:00
Torsten Ruger
c55b41afae sort objects by class before positioning 
since we don’t have pages yet, but want consistent layout
 2018-05-29 20:52:58 +03:00
Torsten Ruger
296617cbaf set label integer to position 2018-05-29 20:30:02 +03:00
Torsten Ruger
8322fca7b3 give labels an integer that will end up being the position at runtime 
Since integers are first class objects, we need to use an integer object
as the return address. The actual address can not be stored in an
instance variable since it is not an object.
The address is unique to the label and never changes after positioning
(using the int is next up)
 2018-05-29 20:26:00 +03:00
Torsten Ruger
f9a89db10c use fake memory 
fix integer offset bug
(which only didn’t cause errors as fixnums are still an order too big
and the famous +1 error hit the empty space)
 2018-05-28 15:09:59 +03:00
Torsten Ruger
6c06f61ab8 start on fake memory 
get index checks on the array access of parfait
 2018-05-28 14:46:26 +03:00
Torsten Ruger
be1bc63ff2 jump was written off the end of binary code, fixed 2018-05-28 11:45:04 +03:00
Torsten Ruger
1c09d4202f fix all test 
and thus all green, two weeks of side branch positioning  done
(luckily not on arm, but interpreter)
 2018-05-25 20:40:39 +03:00
Torsten Ruger
c0cd1e0740 fix an issue where instruction was in wrong code 
embarrassingly used instance variable where it should have been local
 2018-05-25 19:16:13 +03:00
Torsten Ruger
6f0fad0957 dragging the extra through resets 
as the binary the instruction is in may change when repositioning
 2018-05-25 19:04:48 +03:00
Torsten Ruger
8d8cc4b016 more test fixing 
only one bug to go
 2018-05-24 21:20:56 +03:00
Torsten Ruger
bf23883270 busy fixing tests 2018-05-24 19:38:48 +03:00
Torsten Ruger
183d4152d5 loading label must translate the labels too 
(psst: like arm translator already did. duh)
 2018-05-24 19:20:06 +03:00
Torsten Ruger
dae8e88b7a recurring bug, don't save label positions 
labels are ethereal, no length, so they don’t get to occupy a position
 2018-05-24 16:26:56 +03:00
Torsten Ruger
8d510c2e7e getting instruction repositioning right 
big bug hunt, involving complicated maths (%)
 2018-05-24 14:27:53 +03:00
Torsten Ruger
0293320bb8 use a constant for the binary code offset 
where the instructions start
 2018-05-23 21:35:22 +03:00
Torsten Ruger
8ca70a6835 Steamline objectPosition init 
check for resetting on the same position with different class, which
should not happen
Ie it’s ok for an object to push another object up,
but not for an instruction to land on code
 2018-05-23 21:34:49 +03:00
Torsten Ruger
f5d1090c39 no-ops really 2018-05-23 18:06:55 +03:00
Torsten Ruger
a2e7d7c469 give interpreter a clock and pc 
where the pc, like in cpu’s is the memory position.
That is what the interpreter works on.
But for humans, the clock is a simpler way to count where the program
is at, no. of instructions executed
 2018-05-23 18:05:22 +03:00
Torsten Ruger
15e4533a2f fix interpreter to use positions 
tick from one (simulated memory) position to the next
(not from one instruction to the next)
 2018-05-17 20:14:59 +03:00
Torsten Ruger
8966a50a8a getter by position 
extract and expand position testing
never return labels (that have the same position as their target)
 2018-05-17 20:13:33 +03:00
Torsten Ruger
37d62d298e assemble risc to it's position (not itself) 
So in the next step the interpreter can use positions as program counter
and would be much more like the real thing
 2018-05-17 09:49:01 +03:00
Torsten Ruger
49c4d170ce make the interpreter platform 
but still using the risc_instruction stream
 2018-05-17 09:31:36 +03:00
Torsten Ruger
07ed16d765 groundwork for interpreter platform 
especially positioning makes the previous interpreter approach to
fragile (too far off the real thing)
Interpreter should be it’s own platform (still use the risc
instructions),
get a translator and use positions
 2018-05-16 21:00:14 +03:00
Torsten Ruger
ab4bc370ed another +1 bug 2018-05-15 16:25:55 +03:00
Torsten Ruger
e237bc625a remove unused methods 
and a whole lot more index fixes
 2018-05-14 20:50:52 +03:00
Torsten Ruger
3c00239f36 another million index fixes 2018-05-14 15:17:04 +03:00
Torsten Ruger
4856b9891d simplify writing binary 
loop as should be, fixes the problem (one problem at least)
 2018-05-13 18:01:45 +03:00
Torsten Ruger
39902401b9 positioning code by setting first method code 
codes will initial (and on reset) propagate the whole chain
 2018-05-13 15:28:10 +03:00
Torsten Ruger
2d901bf7b6 not wrapping the cpu initial jump anymore 
also introduce padding after cpu_init (wip)
 2018-05-12 18:36:59 +03:00
Torsten Ruger
232fe67c09 introduce platform to abstract cpu and load address 2018-05-12 18:32:10 +03:00
Torsten Ruger
776a97986d fix instruction positioning 
use at as at and only compute difference when needed (to determine if
there is a jump in binary)
Easier to understand that way
 2018-05-11 18:36:45 +03:00
Torsten Ruger
bc1e29e4f6 seperate different Position classes into own files 
also tests
and have Position module keep all positions
(singletons should be at module, not class level)
 2018-05-10 20:56:12 +03:00
Torsten Ruger
1169fa7220 propagating binary code position on extend 2018-05-09 20:36:49 +03:00
Torsten Ruger
6a1528e75a Fix instruction resetting 
which happens on insert of a new instruction
 2018-05-08 20:53:48 +03:00
Torsten Ruger
7ca7e92dda remove link exception class 2018-05-08 20:22:04 +03:00
Torsten Ruger
cf06642768 start passing positions along inside the position code 2018-05-08 19:59:43 +03:00
Torsten Ruger
ce3cc72f9e move all position setting into position 
Position and subclasses handle the logic, external to
the classes, so it can be swapped out later
(at runtime positions can’t change)
 2018-05-07 22:30:43 +03:00
Torsten Ruger
68fb9b1bdc rename Position get/set 2018-05-06 20:04:02 +03:00
Torsten Ruger
415df49199 hand context into position 2018-05-06 00:34:59 +03:00
Torsten Ruger
40f4bfc287 change to position objects complete 2018-05-05 20:25:10 +03:00
Torsten Ruger
3244c7d633 add position tests 
and refactor padding out
 2018-05-05 20:11:08 +03:00
Torsten Ruger
d65a982454 start by moving positioned(module) to position(class) 2018-05-05 19:47:18 +03:00
Torsten Ruger
43d5521cfc debugging positions 2018-05-05 19:32:01 +03:00
Torsten Ruger
d49d2665c5 reinit risc_init 
fixes over 100 tests :-)
 2018-05-01 22:36:46 +03:00
Torsten Ruger
06f51da8f1 rename get_all_methods 2018-05-01 19:19:37 +03:00
Torsten Ruger
1acd231a33 debugging binaries, initial jump issues 2018-04-30 13:28:55 +03:00
Torsten Ruger
d84d208192 implement assignment normalisation 
especially when the value is a send that needs normalising
fixes several broken tests
 2018-04-27 21:56:41 +03:00
Torsten Ruger
26fe77ed68 add some multi method tests 2018-04-26 12:33:33 +03:00
Torsten Ruger
a8e7602193 extract setup for mains test 2018-04-26 12:33:19 +03:00
Torsten Ruger
30ba626cf9 fix knock ons 2018-04-24 20:16:50 +03:00
Torsten Ruger
6fc84d2f98 bit of renaming and a string test 2018-04-24 20:12:49 +03:00
Torsten Ruger
ee28d12429 bit more comparison testing 2018-04-24 19:57:14 +03:00
Torsten Ruger
2bd39bd3dd renaming 2018-04-24 19:46:22 +03:00
Torsten Ruger
ec5a7f8a02 implement larger/smaller or equal 2018-04-24 19:45:58 +03:00
Torsten Ruger
7a2160e9b4 fix comparison operator 
< implemented <=
 2018-04-23 19:39:16 +03:00
Torsten Ruger
ef5854c4df start larger tests 2018-04-23 14:05:37 +03:00
Torsten Ruger
1907574c60 bit of organising 2018-04-23 13:16:46 +03:00
Torsten Ruger
020bce740a more complex while test 
that works, but does leave one wondering what is tested apart from the
result (1)
 2018-04-20 19:38:33 +03:00
Torsten Ruger
6a8bb90704 test multiple assigns 2018-04-20 13:13:09 +03:00
Torsten Ruger
98f3898acd fix while tests 2018-04-20 10:27:06 +03:00
Torsten Ruger
04359546b7 implement greater than 2018-04-19 22:57:31 +03:00
Torsten Ruger
be3d125b82 implement smaller than comparison 
which is NOT an operator in the risc sense
rather a minus and a check for sign
(which _could be more efficient in arm, with conditional execution)
 2018-04-19 22:41:40 +03:00
Torsten Ruger
9e21719aeb generalise the operator handling 
ie passing them through
implementing more
 2018-04-19 22:13:52 +03:00
Torsten Ruger
7d9132ee36 test other int methods 
harness for testing compiler in a method (before just in a case)
 2018-04-19 19:59:48 +03:00
Torsten Ruger
a98d7630fb start testing builtin seperately 
in terms of output only
 2018-04-19 19:47:35 +03:00
Torsten Ruger
1741ad540e move test helper code to support 
to be reused
 2018-04-19 19:33:40 +03:00
Torsten Ruger
13d8a65e07 add while interpreter test 2018-04-19 19:23:12 +03:00
Torsten Ruger
1849522a54 fix TruthCheck 
mixing up the false and true, such a basic human mistake
 2018-04-19 10:34:15 +03:00
Torsten Ruger
3a50b7dd0e fix mod4 name 
really did div4
 2018-04-19 10:00:55 +03:00
Torsten Ruger
059ff4a868 pass a source into the builder 
for debugging
 2018-04-18 19:12:30 +03:00
Torsten Ruger
d19bd5f98d fix dynamic jump 
which gets dynamic resolve and call to work.
FIRST DYNAMIC CALL working
 2018-04-09 15:06:46 +03:00
Torsten Ruger
59e6298879 first resolved call running though 
and returning an int, as it should
just the value .  .  .
 2018-04-08 23:45:23 +03:00
Torsten Ruger
580c53cdae fix the resolve 
without return and not being a function
 2018-04-08 22:30:18 +03:00
Torsten Ruger
33ffcf1d88 move resolve_method code from word to mom 
rather make resolve an instruction.
Since it was coded in risc anyway, we not only save the setup and call
But also makes the mom instruction flow clearer
The method really came from not wanting to code it in risc, but with
the Builder, that is now surprisingly painless
 2018-04-08 18:55:17 +03:00
Torsten Ruger
8c322329fb fix builtin methods according to last commit 2018-04-08 18:52:17 +03:00
Torsten Ruger
9867234c38 move most code from method_compiler to builder 
rather use builder in two ways, than sometimes compiler and sometimes
builder
Also makes it possible to reuse builtin code in mom’s to_risc, as both
use builder. The builtin code by directly adding to compiler, the mom
code not.
 2018-04-08 18:51:20 +03:00
Torsten Ruger
c30e461385 add operator to builder 
just minus for now, easily extended
 2018-04-08 01:01:24 +03:00
Torsten Ruger
5d4b9d4834 add branches to builder 2018-04-08 00:50:51 +03:00
Torsten Ruger
695ae5ad99 add label generation to builder 2018-04-08 00:39:35 +03:00
Torsten Ruger
6958fc31ab rework resolve_method, using builder 2018-04-07 23:07:44 +03:00
Torsten Ruger
26cf911a5c change build names a little and document 2018-04-07 22:35:40 +03:00
Torsten Ruger
6d1beec407 fixing the interpreter tests 2018-04-07 18:58:44 +03:00
Torsten Ruger
db55ec3fd6 slightly changing built return logic 
very tempted to add immediately, but bigger change
 2018-04-07 00:35:54 +03:00
Torsten Ruger
3c90eb31c6 fixes all but interpreter tests 2018-04-06 23:37:41 +03:00
Torsten Ruger
1ddbde1191 return single message for "message" ie r0 
other names, like next_message allocate  a new register
 2018-04-06 22:54:54 +03:00
Torsten Ruger
22409c93ee remove >>, consistent use of << 
makes code easier to read, like assignments
does remind of Passengers
 2018-04-06 22:40:58 +03:00
Torsten Ruger
c042dd9faa allow reverse syntax for >> (ie <<) 
slot >> reg makes sense, being a slot_to_reg
but . . .
consistently use of << (as meaning assignment , =) also makes sense
allow both and let time tell which makes more sense
 2018-04-06 21:05:26 +03:00
Torsten Ruger
c02576b239 reuse dished out names 
so they become like variables
 2018-04-06 20:55:21 +03:00
Torsten Ruger
cae5e323ec add reg to slot 2018-04-06 20:21:14 +03:00
Torsten Ruger
fe71ddc5ae remove dead code 
leave circle detection for now
 2018-04-06 20:20:39 +03:00
Torsten Ruger
88dbc7c84f slot to reg for builder 2018-04-06 16:35:27 +03:00
Torsten Ruger
c233bd82d6 implement [] for RiscValue for the dsl 2018-04-06 16:08:35 +03:00
Torsten Ruger
44d661fe56 progress on the builder front 
mainly tests for now
 2018-04-06 14:54:24 +03:00
Torsten Ruger
e396807ee5 start work on dsl 
so i can read my own code
 2018-04-06 14:21:38 +03:00
Torsten Ruger
ee0a1ca823 renaming methods args and frame 
to arguments_type and frame_type, because that is what they are
In honour of setup bug, where the types of those types were loaded,
instead of just them types
 2018-04-05 12:22:14 +03:00
Torsten Ruger
c51fc67ba5 make interpreter tests less brittle 
by factoring __init code away
just counting main
 2018-04-04 20:05:09 +03:00
Torsten Ruger
4a2a1da3ff little spring clean 2018-04-03 15:23:19 +03:00
Torsten Ruger
17b52d4e80 fix dynamic resolution 
was loading self, when it needs to load receiver
some more test (up to the resolve) start working
 2018-04-03 12:55:28 +03:00
Torsten Ruger
c304ad67c6 load space twice in init , messagesetup overwrites first 
lots of interpreter test changes, brittle, must factor __initi out
 2018-04-02 23:25:52 +03:00
Torsten Ruger
576ae9261d recode resolve method as assembler 
definitely needs some refactoring
in fact i was hoping to code this in ruby (with compiler tweeks)
but there it is: goes through the linked list of methods of the type
and compares their name with self (method on word)
if not found ends in sys exit for now
 2018-04-02 19:32:59 +03:00
Torsten Ruger
fb29fb6431 linked list of methods instead of list of methods 
api changes slightly, especially for each, but mostly sama sama
 2018-04-02 16:36:43 +03:00
Torsten Ruger
ad497b34f1 test interpreters event firing 2018-04-01 22:50:15 +03:00
Torsten Ruger
599679d6e8 simplest if 
without true/false or logic
 2018-04-01 22:42:27 +03:00
Torsten Ruger
48e4e3de9a add returns to tests so program ends in syscall exit 2018-04-01 22:19:21 +03:00
Torsten Ruger
9efeb58061 fix ret_to_byte 
by the now familiar unwrapping of args and wrapping of return
 2018-04-01 22:16:17 +03:00
Torsten Ruger
1a19683e7d fix RegToByte 
seems to work, but does not end in syscall
 2018-04-01 21:59:06 +03:00
Torsten Ruger
3a9539a071 adds multiplication 
without overflow testing, like the others
 2018-04-01 21:18:08 +03:00
Torsten Ruger
1d57c59dab fix putstring 
mainly returning an integer object rather than fixnum
 2018-04-01 18:57:43 +03:00
Torsten Ruger
b1376e83bd add integer minus 
rework plus to make that easy
 2018-04-01 15:26:53 +03:00
Torsten Ruger
972cf47c8b adding returns to all builtins 2018-04-01 15:17:16 +03:00
Torsten Ruger
def67205f0 fix mod4 
which is just shift right by 2 after all
 2018-04-01 15:13:12 +03:00
Torsten Ruger
10fa61aa9f fix integer plus 
mostly forgot the return sequence
 2018-04-01 14:56:01 +03:00
Torsten Ruger
8acfda457f fix div10 
by reducing the incoming integer to fixnum
and then pushing the fixnum result into a new integer
 2018-04-01 14:50:13 +03:00
Torsten Ruger
168c2e862f move wip tests 2018-04-01 14:01:17 +03:00
Torsten Ruger
727069a306 perfectly adding two numbers 
with only 7k lines of code :-)
 2018-04-01 12:00:59 +03:00
Torsten Ruger
4725b81270 get those integers crated and used 2018-03-31 20:21:27 +03:00
Torsten Ruger
5b92b6b785 get plus (+) working 
alas, new integer is not created yet
 2018-03-31 19:37:24 +03:00
Torsten Ruger
a5189570c6 fix remaining constant issues 
all but integer creation
and integer builtins off course
 2018-03-31 13:58:08 +03:00
Torsten Ruger
9e9b5c7f37 move to parfait integers in risc layer 
loading constants means loading parfait objects
objects have to me collected in machine
integer ok, string/true/false/nil next
 2018-03-31 13:25:59 +03:00
Torsten Ruger
6e941ebcb7 introduce load_data instruction 
which just loads data to a register (used internally)
as opposed to integers, which are objects
 2018-03-31 12:38:30 +03:00
Torsten Ruger
e68b28d66d fix helper 
and start on arg test
 2018-03-30 18:05:38 +03:00
Torsten Ruger
1956f18faa add an integer plus 
not correctly handling integer objects yet
 2018-03-30 17:09:02 +03:00
Torsten Ruger
3844a738cd rename assembler to text_writer 
as “assembly” really happens in the machine now
 2018-03-29 18:17:19 +03:00
Torsten Ruger
e012f16d7f fix positioning and the assembly works 2018-03-29 18:03:21 +03:00
Torsten Ruger
7cf253ad9c change assembler to write binary code objects 
also all debug in hex
 2018-03-29 12:16:27 +03:00
Torsten Ruger
5eee79719d reenable now working tests 2018-03-28 13:04:25 +03:00
Torsten Ruger
606e3f8cb3 fix calling to binaries 
used to be to the method, but we assemble the method to its own
position.
Throw in a test for binary calling
 2018-03-28 13:00:03 +03:00
Torsten Ruger
7493d738e1 have to translate the labels 
and use binary as function call target
(because we don’t have the translated label)
 2018-03-28 12:50:07 +03:00
Torsten Ruger
fcb7f652eb found the culprit 2018-03-28 11:37:17 +03:00
Torsten Ruger
500851d246 start on new binary creation process 
now writing into BinaryCode instead of stream
also in the risc layer, not arm, for reusability
 2018-03-27 20:47:41 +03:00
Torsten Ruger
4069397fca don't collect labels anymore 
don’t need, use binary code as the methods jump point
 2018-03-27 19:06:16 +03:00
Torsten Ruger
4253d7a6b9 move assembly from assembler to machine 
id now called position
 2018-03-27 18:47:39 +03:00
Torsten Ruger
4cc1d8455e fix util namespace 
and instruction move ripples
 2018-03-26 20:05:30 +03:00
Torsten Ruger
730197fbed organise tests to where they belong 2018-03-26 19:43:03 +03:00
Torsten Ruger
b24b65520d remove all that label stuff 
left over after rewrite from blocks to linked list
 2018-03-26 14:54:41 +03:00
Torsten Ruger
633e99466d start to debug 2018-03-26 13:43:26 +03:00
Torsten Ruger
865a116f47 small assembler fix 2018-03-25 20:02:51 +03:00
Torsten Ruger
279fdcc1e2 really translate risc - cpu/arm 
also labels.
Actual translation/assembly is much cleaner
 2018-03-25 19:38:59 +03:00
Torsten Ruger
3bd23cee28 also separate risc and cpu inits for the machine 
interpreter works on risc, but assembler off cpu
 2018-03-25 19:36:00 +03:00
Torsten Ruger
a50368c3aa assembler will need redoing somewhat 
with own data objects, we can assemble into them first
then write
may also store cpu instructions
 2018-03-25 18:23:00 +03:00
Torsten Ruger
a407601f5c fix tests from NotSame removal 2018-03-24 18:33:19 +02:00
Torsten Ruger
ad3e73d931 start on dynamic call test 
fix cache entry being not loaded
test incomplete because of missing resolve_method
 2018-03-24 17:55:01 +02:00
Torsten Ruger
3ceb2c2f69 fix div10 return sequence 
did not return at all before
 2018-03-24 16:51:26 +02:00
Torsten Ruger
267237b776 fix init method message setup 
was causing errors in interpreter
(that may have gone unnoticed in arm, as the interpreter checks stuff)
 2018-03-24 15:59:54 +02:00
Torsten Ruger
65d3d5f1c9 fix tests from interpreter load change 
loading values, not Constants
 2018-03-24 12:24:53 +02:00
Torsten Ruger
2c137e8c97 div10 test for interpreter 2018-03-24 12:21:46 +02:00
Torsten Ruger
0f183b3a74 fix value return and test 
slot load was wrong way around
 2018-03-23 20:02:17 +02:00
Torsten Ruger
c51e593335 test return in interpreter 
passes but does not return. dodgy
 2018-03-23 11:36:20 +02:00
Torsten Ruger
55832315eb more fix for multilevel constant load 
was ignoring first level which is already the second for a constant
as the constant is the first load.
first interpreter test working but looking dodgy
 2018-03-22 19:14:22 +02:00
Torsten Ruger
34903829ca fix interpreter test harness and start testing 
interpreter on debug for now
 2018-03-22 18:54:40 +02:00
Torsten Ruger
b4489b1093 rename RiscTransfer to Transfer 2018-03-21 15:48:04 +05:30
Torsten Ruger
9989cc12e0 fix ass tests 
bit weak really, but pass
 2018-03-18 22:37:15 +05:30
Torsten Ruger
c5ec532616 use common list for risc instruction 
strange that that was not done before as the code was clearly copied
when extracting it

Fix bug for insertion
 2018-03-18 10:36:01 +05:30
Torsten Ruger
5fe0ba06ab stash old vm 
moving on to getting mom to work and can’t have both
interpreter and elf broke, about 100 tests  went
 2018-03-11 17:02:42 +05:30
Torsten Ruger
73b7e2b22f remove all test_all 
Stop manually creating the list of tests (and searching missing).
Main level test_all does a search for all test_*
also possible to run by command line with starts
 2017-04-13 17:00:56 +03:00
Torsten Ruger
0d96f5e35f rearranges test helper modules 2017-04-10 16:12:15 +03:00
Torsten Ruger
ffbe39d571 order test requires 
easier to spot missed tests (when guard and cmd-line differ)
 2017-04-02 22:42:51 +03:00
Torsten Ruger
aa79e41d1c rename register to risc 
seems to fit the layer much better as we really have a very reduced
instruction set
 2017-01-19 09:02:29 +02:00