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/branch.py

31 lines
1.3 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.branch import BranchSpec
from power_fv.check.insn import InsnCheck
__all__ = [
"B" , "BA" , "BL" , "BLA" ,
"BC", "BCA", "BCL", "BCLA",
"BCLR" , "BCLRL" ,
"BCCTR", "BCCTRL",
"BCTAR", "BCTARL",
]
class B (InsnCheck, spec_cls=BranchSpec, insn_cls=const.B ): pass
class BA (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BA ): pass
class BL (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BL ): pass
class BLA (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BLA ): pass
class BC (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BC ): pass
class BCA (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCA ): pass
class BCL (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCL ): pass
class BCLA (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCLA): pass
class BCLR (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCLR ): pass
class BCLRL (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCLRL ): pass
class BCCTR (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCCTR ): pass
class BCCTRL(InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCCTRL): pass
class BCTAR (InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCTAR ): pass
class BCTARL(InsnCheck, spec_cls=BranchSpec, insn_cls=const.BCTARL): pass