New issue 2151: s390x Instruction Encoding
https://bitbucket.org/pypy/pypy/issues/2151/s390x-instruction-encoding

Richard Plangger:

The first step of this project is to implement the first tests to ensure the 
correct instruction encoding.
Test cases comparing generated assembler to objdump (s390x eqivalent for 
test_rx86_64_auto_encoding) will be added to the source code. In addition it 
covers
the most common op codes such as Arithmetic, Branches, Load/Store from memory. 
All of them in various flavors (register-register, register-memory, 
memory-memory, ...).
The goal is to be able to correctly assemble simple functions (containing 
several operations in the body) and invoke them correctly.


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