cores
/
power-fv
3
1
Fork 0
Code Issues 18 Pull Requests Projects Releases Wiki Activity
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
dinofly
main
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '1d8916f2df'
${ noResults }
power-fv/power_fv/check/insn/spr.py

28 lines
1.2 KiB
Python
Raw Normal View History Unescape Escape

In-depth refactoring, improved user interface. * A PowerFVSession class provides a REPL interface. Functionality is split into commands (e.g. add checks, build) which can be provided interactively or from a file. See cores/microwatt for an example of its integration. * Instruction specifications are now separated from verification testbenches. An InsnSpec class provides a behavioral model using the same PowerFV interface as a core. This interface is output-only for a core, but bidirectional for the InsnSpec: - fields related to context (e.g. read data) are inputs, - fields related to side-effects (e.g. write strobes) are outputs. The testbench is responsible for driving inputs to the same values as the core, then check outputs for equivalence. This decoupling provides a path towards using PowerFV in simulation. * Instruction encodings are now defined by their fields, not their format (which was problematic e.g. X-form has dozens of variants). Field declarations can be preset to a value, or left undefined. In the latter case, they are implicitly cast to AnyConst (which is useful for arbitrary values like immediates).
2 years ago
from power_fv.insn import const
from power_fv.insn.spec.spr import SPRMoveSpec
from power_fv.check.insn import InsnCheck
__all__ = [
"MTXER" , "MFXER" ,
"MTLR" , "MFLR" ,
"MTCTR" , "MFCTR" ,
"MTSRR0", "MFSRR0",
"MTSRR1", "MFSRR1",
"MTTAR" , "MFTAR" ,
]
class MTXER (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MTXER ): pass
class MFXER (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MFXER ): pass
class MTLR (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MTLR ): pass
class MFLR (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MFLR ): pass
class MTCTR (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MTCTR ): pass
class MFCTR (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MFCTR ): pass
class MTSRR0(InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MTSRR0): pass
class MFSRR0(InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MFSRR0): pass
class MTSRR1(InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MTSRR1): pass
class MFSRR1(InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MFSRR1): pass
class MTTAR (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MTTAR ): pass
class MFTAR (InsnCheck, spec_cls=SPRMoveSpec, insn_cls=const.MFTAR ): pass