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import Interp
import Interp_lib
open import Interp_interface
import Num
val intern_value : value -> Interp.value
val extern_value : Interp.value -> value
val extern_reg : Interp.reg_form -> maybe (integer * integer) -> reg_name
let build_context defs = Interp.to_top_env defs
let to_bits l = (List.map (fun b -> match b with
| false -> (Interp.V_lit (Interp_ast.L_aux Interp_ast.L_zero Interp_ast.Unknown))
| true -> (Interp.V_lit (Interp_ast.L_aux Interp_ast.L_one Interp_ast.Unknown)) end) l)
let from_bits l = (List.map (fun b -> match b with
| Interp.V_lit (Interp_ast.L_aux Interp_ast.L_zero _) -> false
| _ -> true end) l)
let rec to_bytes l = match l with
| [] -> []
| (a::b::c::d::e::f::g::h::rest) ->
(integerFromBoolList [a;b;c;d;e;f;g;h])::(to_bytes rest)
end
let intern_value v = match v with
| Bitvector bs -> Interp.V_vector 0 true (to_bits bs)
| Bytevector bys -> Interp.V_vector 0 true (to_bits (List.concat (List.map (bitSeqFromInteger 8 Nothing) bys)))
| Unknown -> Interp.V_unknown
end
let extern_value for_mem v = match v with
| Interp.V_vector _ true bits ->
if for_mem
then Bytevector (to_bytes (from_bits bits))
else Bitvector (from_bits bits)
| _ -> Unknown
end
let extern_reg r slice = match (r,slice) with
| (Interp.Reg(Id_aux (Id x,_)),Nothing) -> Reg x
| (Interp.Reg(Id_aux (Id x,_)),Just(i1,i2)) -> Reg_slice x (i1,i2)
| (Interp.SubReg (Id_aux (Id x,_)) (Interp.Reg(Id_aux (Id y,_))) (Interp_ast.BF_aux(Interp_ast.BF_single i) _),Nothing) -> Reg_field x y (i,i)
end
let initial_instruction_state top_level main arg =
Interp.Frame Nothing (E_aux (E_app (Id_aux (Id main) Interp_ast.Unknown) [ intern_value arg ]) (Interp_ast.Unknown, Nothing)) top_level [] Interp.emem
let interp mode i_state =
match Interp.resume mode i_state None with
| Interp.Value _ -> Done
| Interp.Error l msg -> Error msg (*Todo, add the l information the string format*)
| Interp.Action a next_state ->
match a with
| Interp.Read_reg reg_form slice -> Read_reg reg_form (fun v -> Interp.add_answer_to_stack (intern_value v) next_state)
| Interp.Write_reg reg_form slice value -> Write_reg reg_form (extern_value value) next_state
| Interp.Read_mem (Id_aux (Id i) _) value slice
(*Need to lookup the Mem function used to determine appropriate value, and possible appropriate read_kind *)
-> Read_mem Interp.Read_plain (extern_value value) (fun v -> Interp.add_answer_to_stack (intern_value v) next_state)
| Interp.Write_mem (Id_aux (id i) _) loc_val slice write_val ->
Write_mem Interp.Write_plain (extern_value loc_val) (extern_value write_val) next_state
| Interp.Call_extern id value -> (*Connect here to a list of external functions*) foo
end
end
|
