bsdphk / pyreveng3 Goto Github PK

I know it never works like that, but one can only try, right?

So, I went running "git pull" thru my reverse engineering projects dump, and noticed that among many projects dead yours is still running "strong". As you guessed, I have the same problem, even more: I now have 3 times more commits and a bunch more code for program analysis. There're differences too:

Intermediate Language

This is not exactly LLVM's IL. The we use it as a "generic" assembly
language for human consumption, not for precise directives to code
generators. However, it is the intent that conversion to proper
LLVM IL a trivial exercise in dumb text-processing

So, my project, https://github.com/pfalcon/ScratchABlock, explicitly rejects LLVM IR as something not really human readable. Nor it's trivial to produce LLVM IR, unless of course you mean to convert your registers to memory variables and load/store them. That's definitely doable, though probably not the dumbest of all the dumb text-processing, but then LLVM indeed will take care of converting your code to SSA form. Otherwise that needs to be done by you, and SSA conversion isn't exactly trivial.

What can be more human readable than C? That's the idea behind ScratchABlock's IL. It's more or less described in https://github.com/pfalcon/ScratchABlock/blob/master/docs/PseudoC-spec.md . Examples of decompilation can be found in https://github.com/pfalcon/ScratchABlock/tree/master/tests/decomp .

https://github.com/pfalcon/ScratchABlock/tree/master/tests/decomp/sub_5fac in particular was contributed by a guy who wrote PowerPC -> PseudoC converter. (The rest of example (growing) come from my Xtensa work).

Well, I'd be really interested to hear from someone trying it for "HP nanoprocessor" and other CPUs I never heard of. Feel free to give it a thought ;-).

Happy New Year!

I get this when I run any of the examples. For example:

$ python3 examples/HP1345A/example.py 
examples/HP1345A/example.py
HP1345A graphics 122-2c8 rendered to /tmp/_.HP1345A.122.svg
HP1345A graphics 31e-400 rendered to /tmp/_.HP1345A.31e.svg
Traceback (most recent call last):
  File "examples/HP1345A/example.py", line 95, in <module>
    listing.Listing(pj, ncol=2)
  File "/home/mcmaster/doc/ext/PyReveng3/pyreveng/listing.py", line 60, in __init__
    lo = asp.lo
AttributeError: 'Job' object has no attribute 'lo'

Ubuntu 16.04.6, Python 3.5.2. Please let me know if you'd like any additional information