Implemented RV64F extension.#18
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doushe821 wants to merge 8 commits into
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TODO: 1. softfloat lib integration 2. Emition 3. Tests That's it
Also improved builder and encoding. Also integration of softfloat is questionable and I might have to look for better solution. TODO: 1. Finish builder 2. Implement Emitter. 3. Test. Optional: search for better building method. Current one is ugly, but it might be the optimal one, since softfloat doesn't provide cmake for some reason.
DONE: 1. Extra encoding formats needed for RV64F instructions. 2. Added some helper functions in scope.rb and cpp_gen.rb 3. Added emition of RV64F instrs. TODO: 1. Need to fix types for floating point temporaries. 2. Write tests. 3. Might need to refactor dsl implementation of this extension. Most methods can be generalized by adding their size as an attribute. It goes even further for Conversion instructions, because they all can be merged into one isntruction with 4 attributes. But this might become tidious in debug phase, so in my opinion, tests first, and then this changes.
Safety commit
TODO: 1. Do neg correctly. 2. Add rounding mode everywhere, for that I also need to change cpu_state emitter a bit. 3. Move most fp-relateed functions in separate module of emitter. 4. Tests.
…ions, added NaN checks that do not use isNaN from softfloat.
Also fixed a small bug in decorder, also started to write proposals (getting ready for mr)
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Implementation of RV64F extension in Protea DSL (unit tests included). Some changes in ADL files to fix possible bugs and make rv64F integration possible. More detailed info will be provided in proposal comments
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