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Diffstat (limited to 'src/lem_interp/0.11/interp.lem')
| -rw-r--r-- | src/lem_interp/0.11/interp.lem | 3407 |
1 files changed, 3407 insertions, 0 deletions
diff --git a/src/lem_interp/0.11/interp.lem b/src/lem_interp/0.11/interp.lem new file mode 100644 index 00000000..431c1a08 --- /dev/null +++ b/src/lem_interp/0.11/interp.lem @@ -0,0 +1,3407 @@ +(*========================================================================*) +(* Sail *) +(* *) +(* Copyright (c) 2013-2017 *) +(* Kathyrn Gray *) +(* Shaked Flur *) +(* Stephen Kell *) +(* Gabriel Kerneis *) +(* Robert Norton-Wright *) +(* Christopher Pulte *) +(* Peter Sewell *) +(* Alasdair Armstrong *) +(* Brian Campbell *) +(* Thomas Bauereiss *) +(* Anthony Fox *) +(* Jon French *) +(* Dominic Mulligan *) +(* Stephen Kell *) +(* Mark Wassell *) +(* *) +(* All rights reserved. *) +(* *) +(* This software was developed by the University of Cambridge Computer *) +(* Laboratory as part of the Rigorous Engineering of Mainstream Systems *) +(* (REMS) project, funded by EPSRC grant EP/K008528/1. *) +(* *) +(* Redistribution and use in source and binary forms, with or without *) +(* modification, are permitted provided that the following conditions *) +(* are met: *) +(* 1. Redistributions of source code must retain the above copyright *) +(* notice, this list of conditions and the following disclaimer. *) +(* 2. Redistributions in binary form must reproduce the above copyright *) +(* notice, this list of conditions and the following disclaimer in *) +(* the documentation and/or other materials provided with the *) +(* distribution. *) +(* *) +(* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' *) +(* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *) +(* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *) +(* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR *) +(* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *) +(* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *) +(* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF *) +(* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *) +(* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, *) +(* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT *) +(* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF *) +(* SUCH DAMAGE. *) +(*========================================================================*) + +open import Pervasives +import Map +import Map_extra (* For 'find' instead of using lookup and maybe types, as we know it cannot fail *) +import Set_extra (* For 'to_list' because map only goes to set *) +import List_extra (* For 'nth' and 'head' where we know that they cannot fail *) +open import Show +open import Show_extra (* for 'show' to convert nat to string) *) +open import String_extra (* for chr *) +import Assert_extra (*For failwith when partiality is known to be unreachable*) + +open import Sail_impl_base +open import Interp_ast +open import Interp_utilities +open import Instruction_extractor + +(* TODO: upstream into Lem *) +val stringFromTriple : forall 'a 'b 'c. ('a -> string) -> ('b -> string) -> ('c -> string) -> ('a * 'b * 'c) -> string +let stringFromTriple showX showY showZ (x,y,z) = + "(" ^ showX x ^ ", " ^ showY y ^ ", " ^ showZ z ^ ")" + +instance forall 'a 'b 'c. Show 'a, Show 'b, Show 'c => (Show ('a * 'b * 'c)) + let show = stringFromTriple show show show +end + +val debug_print : string -> unit +declare ocaml target_rep function debug_print s = `Printf.eprintf` "%s" s + +val intern_annot : tannot -> tannot +let intern_annot annot = + match annot with + | Just (t,_,ncs,effect,rec_effect) -> + Just (t,Tag_empty,ncs,pure,rec_effect) + | Nothing -> Nothing + end + +let val_annot typ = Just(typ,Tag_empty,[],pure,pure) + +let ctor_annot typ = Just(typ,Tag_ctor,[],pure,pure) + +let enum_annot typ max = Just(typ,Tag_enum max,[],pure,pure) + +let non_det_annot annot maybe_id = match annot with + | Just(t,_,cs,ef,efr) -> Just(t,Tag_unknown maybe_id,cs,ef,efr) + | _ -> Nothing +end + +let is_inc = function | IInc -> true | _ -> false end + +let id_of_string s = (Id_aux (Id s) Unknown) + + +let rec {ocaml} string_of_reg_form r = match r with + | Form_Reg id _ _ -> get_id id + | Form_SubReg id reg_form _ -> (string_of_reg_form reg_form) ^ "." ^ (get_id id) +end + +let rec {ocaml} string_of_value v = match v with + | V_boxref nat t -> "$#" ^ (show nat) ^ "$" + | V_lit (L_aux lit _) -> + (match lit with + | L_unit -> "()" + | L_zero -> "0" + | L_one -> "1" + | L_true -> "true" + | L_false -> "false" + | L_num num -> show num + | L_hex hex -> "0x" ^ hex + | L_bin bin -> "0b" ^ bin + | L_undef -> "undefined" + | L_string str-> "\"" ^ str ^ "\"" end) + | V_tuple vals -> "(" ^ (list_to_string string_of_value "," vals) ^ ")" + | V_list vals -> "[||" ^ (list_to_string string_of_value "," vals) ^ "||]" + | V_vector i inc vals -> + let default_format _ = "[" ^ (list_to_string string_of_value "," vals) ^ "]" in + let to_bin () = (*"("^show i ^") "^ *)"0b" ^ + (List.foldr + (fun v rst -> + (match v with + | V_lit (L_aux l _) -> + (match l with | L_one -> "1" | L_zero -> "0" | L_undef -> "u" + | _ -> Assert_extra.failwith "to_bin called with non-bin lits" end) + | V_unknown -> "?" + | _ -> Assert_extra.failwith "to_bin called with non-bin values" end) ^rst) "" vals) in + match vals with + | [] -> default_format () + | v::vs -> + match v with + | V_lit (L_aux L_zero _) -> to_bin() + | V_lit (L_aux L_one _) -> to_bin() + | _ -> default_format() end end + | V_vector_sparse start stop inc vals default -> + "[" ^ (list_to_string (fun (i,v) -> (show i) ^ " = " ^ (string_of_value v)) "," vals) ^ "]:" ^ + show start ^ "-" ^show stop ^ "(default of " ^ (string_of_value default) ^ ")" + | V_record t vals -> + "{" ^ (list_to_string (fun (id,v) -> (get_id id) ^ "=" ^ (string_of_value v)) ";" vals) ^ "}" + | V_ctor id t _ value -> (get_id id) ^ " " ^ string_of_value value + | V_unknown -> "Unknown" + | V_register r -> string_of_reg_form r + | V_register_alias _ _ -> "register_as_alias" + | V_track v rs -> "tainted by {" ^ (list_to_string string_of_reg_form "," []) ^ "} --" ^ (string_of_value v) +end +let ~{ocaml} string_of_value _ = "" + +val debug_print_value_list : list string -> string +let rec debug_print_value_list vs = match vs with + | [] -> "" + | [v] -> v + | v :: vs -> v ^ ";" ^ debug_print_value_list vs +end +val debug_print_value : value -> string +let rec debug_print_value v = match v with + | V_boxref n t -> "V_boxref " ^ (show n) ^ " t" + | V_lit (L_aux lit _) -> + "V_lit " ^ + (match lit with + | L_unit -> "L_unit" + | L_zero -> "L_zero" + | L_one -> "L_one" + | L_true -> "L_true" + | L_false -> "L_false" + | L_num num -> "(Lnum " ^ (show num) ^ ")" + | L_hex hex -> "(L_hex " ^ hex ^ ")" + | L_bin bin -> "(L_bin " ^ bin ^ ")" + | L_undef -> "L_undef" + | L_string str-> "(L_string " ^ str ^ ")" end) + | V_tuple vals -> + "V_tuple [" ^ debug_print_value_list (List.map debug_print_value vals) ^ "]" + | V_list vals -> + "V_list [" ^ debug_print_value_list (List.map debug_print_value vals) ^ "]" + | V_vector i inc vals -> + "V_vector " ^ (show i) ^ + " " ^ (if inc = IInc then "IInc" else "IDec") ^ + " [" ^ debug_print_value_list (List.map debug_print_value vals) ^ "]" + | V_vector_sparse start stop inc vals default -> + let ppindexval (i,v) = (show i) ^ " = " ^ (debug_print_value v) in + let valspp = debug_print_value_list (List.map ppindexval vals) in + "V_vector " ^ (show start) ^ " " ^ (show stop) ^ " " ^ + (if inc = IInc then "IInc" else "IDec") ^ + " [" ^ valspp ^ "] (" ^ debug_print_value default ^ ")" + | V_record t vals -> + let ppidval (id,v) = "(" ^ (get_id id) ^ "," ^ debug_print_value v ^ ")" in + "V_record t [" ^ debug_print_value_list (List.map ppidval vals) ^ "]" + | V_ctor id t k v' -> + "V_ctor " ^ (get_id id) ^ " t " ^ + (match k with | C_Enum n -> "(C_Enum " ^ show n ^ ")" + | C_Union -> "C_Union" end) ^ + "(" ^ debug_print_value v' ^ ")" + | V_unknown -> "V_unknown" + | V_register r -> "V_register (" ^ string_of_reg_form r ^ ")" + | V_register_alias _ _ -> "V_register_alias _ _" + | V_track v rs -> "V_track (" ^ debug_print_value v ^ ") _" + end + +instance (Show value) + let show v = debug_print_value v +end + +let rec {coq;ocaml} id_value_eq strict (i, v) (i', v') = i = i' && value_eq strict v v' +and value_eq strict left right = + match (left, right) with + | (V_lit l, V_lit l') -> lit_eq l l' + | (V_boxref n t, V_boxref m t') -> n = m && t = t' + | (V_tuple l, V_tuple l') -> listEqualBy (value_eq strict) l l' + | (V_list l, V_list l') -> listEqualBy (value_eq strict) l l' + | (V_vector n b l, V_vector m b' l') -> b = b' && listEqualBy (value_eq strict) l l' + | (V_vector_sparse n o b l v, V_vector_sparse m p b' l' v') -> + n=m && o=p && b=b' && + listEqualBy (fun (i,v) (i',v') -> i=i' && (value_eq strict v v')) l l' && value_eq strict v v' + | (V_record t l, V_record t' l') -> + t = t' && + listEqualBy (id_value_eq strict) l l' + | (V_ctor i t ckind v, V_ctor i' t' ckind' v') -> t = t' && ckind=ckind' && id_value_eq strict (i, v) (i', v') + | (V_ctor _ _ (C_Enum i) _,V_lit (L_aux (L_num j) _)) -> i = (natFromInteger j) + | (V_lit (L_aux (L_num j) _), V_ctor _ _ (C_Enum i) _) -> i = (natFromInteger j) + | (V_unknown,V_unknown) -> true + | (V_unknown,_) -> if strict then false else true + | (_,V_unknown) -> if strict then false else true + | (V_track v1 ts1, V_track v2 ts2) -> + if strict + then value_eq strict v1 v2 && ts1 = ts2 + else value_eq strict v1 v2 + | (V_track v _, v2) -> if strict then false else value_eq strict v v2 + | (v,V_track v2 _) -> if strict then false else value_eq strict v v2 + | (_, _) -> false + end +let {isabelle;hol} id_value_eq _ x y = unsafe_structural_equality x y +let {isabelle;hol} value_eq _ x y = unsafe_structural_equality x y + +let {coq;ocaml} value_ineq n1 n2 = not (value_eq false n1 n2) +let {isabelle;hol} value_ineq = unsafe_structural_inequality + +instance (Eq value) + let (=) = value_eq false + let (<>) = value_ineq +end + +let reg_start_pos reg = + match reg with + | Form_Reg _ (Just(typ,_,_,_,_)) _ -> + let start_from_vec targs = match targs with + | [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant s) _)) _;_;_;_] -> natFromInteger s + | [Typ_arg_aux (Typ_arg_nexp _) _; Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant s) _)) _; Typ_arg_aux (Typ_arg_order Odec) _; _] -> (natFromInteger s) - 1 + | [_; _; Typ_arg_aux (Typ_arg_order Oinc) _; _] -> 0 + | _ -> Assert_extra.failwith "vector type not well formed" + end in + let start_from_reg targs = match targs with + | [Typ_arg_aux (Typ_arg_typ (Typ_aux (Typ_app (Id_aux (Id "vector") _) targs) _)) _] -> start_from_vec targs + | _ -> Assert_extra.failwith "register not of type vector" + end in + match typ with + | Typ_aux (Typ_app id targs) _ -> + if get_id id = "vector" then start_from_vec targs + else if get_id id = "register" then start_from_reg targs + else Assert_extra.failwith "register abbrev not register or vector" + | _ -> Assert_extra.failwith "register abbrev not register or vector" + end + | _ -> Assert_extra.failwith "reg_start_pos found unexpected sub reg, or reg without a type" +end + +let reg_size reg = + match reg with + | Form_Reg _ (Just(typ,_,_,_,_)) _ -> + let end_from_vec targs = match targs with + | [_;Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant s) _)) _;_;_] -> natFromInteger s + | _ -> Assert_extra.failwith "register vector type not well formed" + end in + let end_from_reg targs = match targs with + | [Typ_arg_aux (Typ_arg_typ (Typ_aux (Typ_app (Id_aux (Id "vector") _) targs) _)) _] -> end_from_vec targs + | _ -> Assert_extra.failwith "register does not contain vector" + end in + match typ with + | Typ_aux (Typ_app id targs) _ -> + if get_id id = "vector" then end_from_vec targs + else if get_id id = "register" then end_from_reg targs + else Assert_extra.failwith "register type is none of vector, register, or abbrev" + | _ -> Assert_extra.failwith "register type is none of vector, register, or abbrev" + end + | _ -> Assert_extra.failwith "reg_size given unexpected sub reg or reg without a type" +end + +(*Constant unit value, for use in interpreter *) +let unit_ty = Typ_aux (Typ_id (Id_aux (Id "unit") Unknown)) Unknown +let unitv = V_lit (L_aux L_unit Unknown) +let unit_e = E_aux (E_lit (L_aux L_unit Unknown)) (Unknown, val_annot unit_ty) + +(* Store for local memory of ref cells, string stores the name of the function the memory is being created for*) +type lmem = LMem of string * nat * map nat value * set nat + +(* Environment for bindings *) +type env = map string value +(* Environment for lexical bindings, nat is a counter to build new unique variables when necessary *) +type lenv = LEnv of nat * env + +let emem name = LMem name 1 Map.empty Set.empty +let eenv = LEnv 1 Map.empty + +let rec list_to_string sep format = function + | [] -> "" + | [i] -> format i + | i::ls -> (format i) ^ sep ^ list_to_string sep format ls +end + +let env_to_string (LEnv c env) = + "(LEnv " ^ show c ^ " [" ^ + (list_to_string ", " (fun (k,v) -> k ^ " -> " ^ (string_of_value v)) (Map_extra.toList env)) ^ + "])" + +instance (Show lenv) + let show env = env_to_string env +end + +let mem_to_string (LMem f c mem _) = + "(LMem " ^ f ^ " " ^ show c ^ + " [" ^ (list_to_string ", " (fun (k,v) -> show k ^ " -> " ^ (string_of_value v)) (Map_extra.toList mem)) ^ "])" + +instance (Show lmem) + let show mem = mem_to_string mem +end + +type sub_reg_map = map string index_range + +(*top_level is a tuple of + (function definitions environment, + all extracted instructions (where possible), + default direction + letbound and enum values, + register values, + Typedef union constructors, + sub register mappings, and register aliases) *) +type top_level = + | Env of map string (list (funcl tannot)) (*function definitions environment*) + * list instruction_form (* extracted instructions (where extractable) *) + * i_direction (*default direction*) + * env (*letbound and enum values*) + * env (*register values*) + * map string typ (*typedef union constructors *) + * map string sub_reg_map (*sub register mappings*) + * map string (alias_spec tannot) (*register aliases*) + * bool (* debug? *) + +type action = + | Read_reg of reg_form * maybe (nat * nat) + | Write_reg of reg_form * maybe (nat * nat) * value + | Read_mem of id * value * maybe (nat * nat) + | Read_mem_tagged of id * value * maybe (nat * nat) + | Write_mem of id * value * maybe (nat * nat) * value + | Write_ea of id * value + | Write_memv of id * value * value + | Excl_res of id + | Write_memv_tagged of id * value * value * value + | Barrier of id * value + | Footprint of id * value + | Nondet of list (exp tannot) * tag + | Call_extern of string * value + | Return of value + | Exit of (exp tannot) + (* For the error case of a failed assert, carries up an optional error message*) + | Fail of value + (* For stepper, no action needed. String is function called, value is parameter where applicable *) + | Step of l * maybe string * maybe value + +(* Inverted call stack, where the frame with a Top stack waits for an action to resolve and + all other frames for their inner stack *) +type stack = + | Top + | Hole_frame of id * exp tannot * top_level * lenv * lmem * stack (* Stack frame waiting for a value *) + | Thunk_frame of exp tannot * top_level * lenv * lmem * stack (* Paused stack frame *) + +(*Internal representation of outcomes from running the interpreter. + Actions request an external party to resolve a request *) +type outcome = + | Value of value + | Action of action * stack + | Error of l * string + +let string_of_id id' = + (match id' with + | Id_aux id _ -> + (match id with + | Id s -> s + | DeIid s -> s + end) + end) + +instance (Show id) + let show = string_of_id +end + +let string_of_kid kid' = + (match kid' with + | Kid_aux kid _ -> + (match kid with + | Var s -> s + end) + end) + +instance (Show kid) + let show = string_of_kid +end + +let string_of_reg_id (RI_aux (RI_id id ) _) = string_of_id id + +instance forall 'a. (Show reg_id 'a) + let show = string_of_reg_id +end + +let rec string_of_typ typ' = + (match typ' with + | Typ_aux typ _ -> + (match typ with + | Typ_wild -> "(Typ_wild)" + | Typ_id id -> "(Typ_id " ^ (string_of_id id) ^ ")" + | Typ_var kid -> "(Typ_var " ^ (string_of_kid kid) ^ ")" + | Typ_fn typ1 typ2 eff -> "(Typ_fn _ _ _)" + | Typ_tup typs -> "(Typ_tup [" ^ String.concat "; " (List.map string_of_typ typs) ^ "])" + | Typ_app id args -> "(Typ_app " ^ string_of_id id ^ " _)" + end) + end) + +instance (Show typ) + let show = string_of_typ +end + +let rec string_of_lexp l' = + (match l' with + | LEXP_aux l _ -> + (match l with + | LEXP_id id -> "(LEXP_id " ^ string_of_id id ^ ")" + | LEXP_memory id exps -> "(LEXP_memory " ^ string_of_id id ^ " _)" + | LEXP_cast typ id -> "(LEXP_cast " ^ string_of_typ typ ^ " " ^ string_of_id id ^ ")" + | LEXP_tup lexps -> "(LEXP_tup [" ^ String.concat "; " (List.map string_of_lexp lexps) ^ "])" + | LEXP_vector lexps exps -> "(LEXP_vector _ _)" + | LEXP_vector_range lexp exp1 exp2 -> "(LEXP_vector_range _ _ _)" + | LEXP_field lexp id -> "(LEXP_field " ^ string_of_lexp lexp ^ "." ^ string_of_id id ^ ")" + end) + end) + +instance forall 'a. (Show lexp 'a) + let show = string_of_lexp +end + +let string_of_lit l' = + (match l' with + | L_aux l _ -> + (match l with + | L_unit -> "()" + | L_zero -> "0" + | L_one -> "1" + | L_true -> "true" + | L_false -> "false" + | L_num n -> "0d" ^ (show n) + | L_hex s -> "0x" ^ s + | L_bin s -> "0b" ^ s + | L_undef -> "undef" + | L_string s -> "\"" ^ s ^ "\"" + end) + end) + +instance (Show lit) + let show = string_of_lit +end + +let string_of_order o' = + (match o' with + | Ord_aux o _ -> + (match o with + | Ord_var kid -> string_of_kid kid + | Ord_inc -> "inc" + | Ord_dec -> "dec" + end) + end) + +instance (Show order) + let show = string_of_order +end + +let rec string_of_exp e' = + (match e' with + | E_aux e _ -> + (match e with + | E_block exps -> "(E_block [" ^ String.concat "; " (List.map string_of_exp exps) ^ "])" + | E_nondet exps -> "(E_nondet [" ^ String.concat "; " (List.map string_of_exp exps) ^ "])" + | E_id id -> "(E_id \"" ^ string_of_id id ^ "\")" + | E_lit lit -> "(E_lit " ^ string_of_lit lit ^ ")" + | E_cast typ exp -> "(E_cast " ^ string_of_typ typ ^ " " ^ string_of_exp exp ^ ")" + | E_app id exps -> "(E_app " ^ string_of_id id ^ " [" ^ String.concat "; " (List.map string_of_exp exps) ^ "])" + | E_app_infix exp1 id exp2 -> "(E_app_infix " ^ string_of_exp exp1 ^ " " ^ string_of_id id ^ " " ^ string_of_exp exp2 ^ ")" + | E_tuple exps -> "(E_tuple [" ^ String.concat "; " (List.map string_of_exp exps) ^ "])" + | E_if cond thn els -> "(E_if " ^ (string_of_exp cond) ^ " ? " ^ (string_of_exp thn) ^ " : " ^ (string_of_exp els) ^ ")" + | E_for id from to_ by order exp -> "(E_for " ^ string_of_id id ^ " " ^ string_of_exp from ^ " " ^ string_of_exp to_ ^ " " ^ string_of_exp by ^ " " ^ string_of_order order ^ " " ^ string_of_exp exp ^ ")" + | E_vector exps -> "(E_vector [" ^ String.concat "; " (List.map string_of_exp exps) ^ "])" + | E_vector_access exp1 exp2 -> "(E_vector_access " ^ string_of_exp exp1 ^ " " ^ string_of_exp exp2 ^ ")" + | E_vector_subrange exp1 exp2 exp3 -> "(E_vector_subrange " ^ string_of_exp exp1 ^ " " ^ string_of_exp exp2 ^ " " ^ string_of_exp exp3 ^ ")" + | E_vector_update _ _ _ -> "(E_vector_update)" + | E_vector_update_subrange _ _ _ _ -> "(E_vector_update_subrange)" + | E_vector_append exp1 exp2 -> "(E_vector_append " ^ string_of_exp exp1 ^ " " ^ string_of_exp exp2 ^ ")" + | E_list exps -> "(E_list [" ^ String.concat "; " (List.map string_of_exp exps) ^ "])" + | E_cons exp1 exp2 -> "(E_cons " ^ string_of_exp exp1 ^ " :: " ^ string_of_exp exp2 ^ ")" + | E_record _ -> "(E_record)" + | E_record_update _ _ -> "(E_record_update)" + | E_field _ _ -> "(E_field)" + | E_case _ _ -> "(E_case)" + | E_let _ _ -> "(E_let)" + | E_assign lexp exp -> "(E_assign " ^ string_of_lexp lexp ^ " := " ^ string_of_exp exp ^ ")" + | E_sizeof _ -> "(E_sizeof _)" + | E_exit exp -> "(E_exit " ^ string_of_exp exp ^ ")" + | E_return exp -> "(E_return " ^ string_of_exp exp ^ ")" + | E_assert cond msg -> "(E_assert " ^ string_of_exp cond ^ " " ^ string_of_exp msg ^ ")" + | E_internal_cast _ _ -> "(E_internal_cast _ _)" + | E_internal_exp _ -> "(E_internal_exp _)" + | E_sizeof_internal _ -> "(E_size _)" + | E_internal_exp_user _ _ -> "(E_internal_exp_user _ _)" + | E_comment _ -> "(E_comment _)" + | E_comment_struc _ -> "(E_comment_struc _)" + | E_internal_let _ _ _ -> "(E_internal_let _ _ _)" + | E_internal_plet _ _ _ -> "(E_internal_plet _ _ _)" + | E_internal_return _ -> "(E_internal_return _)" + | E_internal_value value -> "(E_internal_value " ^ debug_print_value value ^ ")" + end) + end) + +instance forall 'a. (Show (exp 'a)) + let show = string_of_exp +end + +let string_of_alias_spec (AL_aux _as _) = + (match _as with + | AL_subreg reg_id id -> "(AL_subreg " ^ (show reg_id) ^ " " ^ (show id) ^ ")" + | AL_bit reg_id exp -> "(AL_bit " ^ (show reg_id) ^ " " ^ (show exp) ^ ")" + | AL_slice reg_id exp1 exp2 -> "(AL_slice " ^ (show reg_id) ^ " " ^ (show exp1) ^ " " ^ (show exp2) ^ ")" + | AL_concat reg_id1 reg_id2 -> "(AL_concat " ^ (show reg_id1) ^ " " ^ (show reg_id2) ^ ")" + end) + +instance forall 'a. (Show alias_spec 'a) + let show = string_of_alias_spec +end + +let string_of_quant_item (QI_aux qi _) = + (match qi with + | QI_id kinded_id -> "(QI_id _)" + | QI_const nc -> "(QI_const _)" + end) + +instance (Show quant_item) + let show = string_of_quant_item +end + +let string_of_typquant (TypQ_aux tq _) = + (match tq with + | TypQ_tq qis -> "(TypQ_tq [" ^ (String.concat "; " (List.map show qis)) ^ "]" + | TypQ_no_forall -> "TypQ_no_forall" + end) + +instance (Show typquant) + let show = string_of_typquant +end + +let string_of_typschm (TypSchm_aux (TypSchm_ts typquant typ) _) = + "(TypSchm " ^ (show typquant) ^ " " ^ (show typ) ^ ")" + +instance (Show typschm) + let show = string_of_typschm +end + +let rec string_of_pat (P_aux pat _) = + (match pat with + | P_lit lit -> "(P_lit " ^ show lit ^ ")" + | P_wild -> "P_wild" + | P_as pat' id -> "(P_as " ^ string_of_pat pat' ^ " " ^ show id ^ ")" + | P_typ typ pat' -> "(P_typ" ^ show typ ^ " " ^ string_of_pat pat' ^ ")" + | P_id id -> "(P_id " ^ show id ^ ")" + | P_app id pats -> "(P_app " ^ show id ^ " [" ^ String.concat "; " (List.map string_of_pat pats) ^ "])" + | P_record _ _ -> "(P_record _ _)" + | P_vector pats -> "(P_vector [" ^ String.concat "; " (List.map string_of_pat pats) ^ "])" + | P_vector_concat pats -> "(P_vector_concat [" ^ String.concat "; " (List.map string_of_pat pats) ^ "])" + | P_tup pats -> "(P_tup [" ^ String.concat "; " (List.map string_of_pat pats) ^ "])" + | P_list pats -> "(P_list [" ^ String.concat "; " (List.map string_of_pat pats) ^ "])" + end) + +instance forall 'a. (Show pat 'a) + let show = string_of_pat +end + +let string_of_letbind (LB_aux lb _) = + (match lb with + | LB_val pat exp -> "(LB_val " ^ (show pat) ^ " " ^ (show exp) ^ ")" + end) + +instance forall 'a. (Show letbind 'a) + let show = string_of_letbind +end + +type interp_mode = <| eager_eval : bool; track_values : bool; track_lmem : bool; debug : bool; debug_indent : string |> + +let indent_mode mode = if mode.debug then <| mode with debug_indent = " " ^ mode.debug_indent |> else mode + +val debug_fun_enter : interp_mode -> string -> list string -> unit +let debug_fun_enter mode name args = + if mode.debug then + debug_print (mode.debug_indent ^ ":: " ^ name ^ " args: [" ^ (String.concat "; " args) ^ "]\n") + else + () + +val debug_fun_exit : forall 'a. Show 'a => interp_mode -> string -> 'a -> unit +let debug_fun_exit mode name retval = + if mode.debug then + debug_print (mode.debug_indent ^ "=> " ^ name ^ " returns: " ^ (show retval) ^ "\n") + else + () + +(* Evaluates global let binds and prepares the context for individual expression evaluation in the current model *) +val to_top_env : bool -> (i_direction -> outcome -> maybe value) -> defs tannot -> (maybe outcome * top_level) +val get_default_direction : top_level -> i_direction + +(* interprets the exp sequentially in the presence of a set of top level definitions and returns a value, a memory request, or other external action *) +val interp :interp_mode -> (i_direction -> outcome -> maybe value) -> defs tannot -> exp tannot -> (outcome * lmem * lenv) + +(* Takes a paused partially evaluated expression, puts the value into the environment, and runs again *) +val resume : interp_mode -> stack -> maybe value -> (outcome * lmem * lenv) + +(* Internal definitions to setup top_level *) +val to_fdefs : defs tannot -> map string (list (funcl tannot)) +let rec to_fdefs (Defs defs) = + match defs with + | [] -> Map.empty + | def::defs -> + match def with + | DEF_fundef f -> (match f with + | FD_aux (FD_function _ _ _ fcls) _ -> + match fcls with + | [] -> to_fdefs (Defs defs) + | (FCL_aux (FCL_Funcl name _) _)::_ -> + Map.insert (get_id name) fcls (to_fdefs (Defs defs)) end end) + | _ -> to_fdefs (Defs defs) end end + +val to_register_fields : defs tannot -> map string (map string index_range) +let rec to_register_fields (Defs defs) = + match defs with + | [ ] -> Map.empty + | def::defs -> + match def with + | DEF_type (TD_aux (TD_register id n1 n2 indexes) l') -> + Map.insert (get_id id) + (List.foldr (fun (a,b) imap -> Map.insert (get_id b) a imap) Map.empty indexes) + (to_register_fields (Defs defs)) + | _ -> to_register_fields (Defs defs) + end + end + +val to_registers : i_direction -> defs tannot -> env +let rec to_registers dd (Defs defs) = + match defs with + | [ ] -> Map.empty + | def::defs -> + match def with + | DEF_reg_dec (DEC_aux (DEC_reg typ id) (l,tannot)) -> + let dir = match tannot with + | Nothing -> dd + | Just(t, _, _, _,_) -> dd (*TODO, lets pull the direction out properly*) + end in + Map.insert (get_id id) (V_register(Form_Reg id tannot dir)) (to_registers dd (Defs defs)) + | DEF_reg_dec (DEC_aux (DEC_alias id aspec) (l,tannot)) -> + Map.insert (get_id id) (V_register_alias aspec tannot) (to_registers dd (Defs defs)) + | _ -> to_registers dd (Defs defs) + end + end + +val to_aliases : defs tannot -> map string (alias_spec tannot) +let rec to_aliases (Defs defs) = + match defs with + | [] -> Map.empty + | def::defs -> + match def with + | DEF_reg_dec (DEC_aux (DEC_alias id aspec) _) -> + Map.insert (get_id id) aspec (to_aliases (Defs defs)) + | DEF_reg_dec (DEC_aux (DEC_typ_alias typ id aspec) _) -> + Map.insert (get_id id) aspec (to_aliases (Defs defs)) + | _ -> to_aliases (Defs defs) + end + end + +val to_data_constructors : defs tannot -> map string typ +let rec to_data_constructors (Defs defs) = + match defs with + | [] -> + (*Prime environment with built-in constructors*) + Map.insert "Some" (Typ_aux (Typ_var (Kid_aux (Var "a") Unknown)) Unknown) + (Map.insert "None" unit_t Map.empty) + | def :: defs -> + match def with + | DEF_type (TD_aux t _)-> + match t with + | TD_variant id _ tq tid_list _ -> + (List.foldr + (fun (Tu_aux t _) map -> + match t with + | (Tu_ty_id x y) -> Map.insert (get_id y) x map + | Tu_id x -> Map.insert (get_id x) unit_t map end) + (to_data_constructors (Defs defs))) tid_list + | _ -> to_data_constructors (Defs defs) end + | _ -> to_data_constructors (Defs defs) end + end + +(*Memory and environment helper functions*) +val env_from_list : list (id * value) -> env +let env_from_list ls = List.foldr (fun (id,v) env -> Map.insert (get_id id) v env) Map.empty ls + +val in_env :forall 'a. map string 'a -> string -> maybe 'a +let in_env env id = Map.lookup id env + +val in_lenv : lenv -> id -> value +let in_lenv (LEnv _ env) id = + match in_env env (get_id id) with + | Nothing -> V_unknown + | Just v -> v +end + +(*Prefer entries in the first when in conflict*) +val union_env : lenv -> lenv -> lenv +let union_env (LEnv i1 env1) (LEnv i2 env2) = + let l = if i1 < i2 then i2 else i1 in + LEnv l (Map.(union) env2 env1) + +val fresh_var : lenv -> (id * lenv) +let fresh_var (LEnv i env) = + let lenv = (LEnv (i+1) env) in + ((Id_aux (Id ((show i) ^ "var")) Interp_ast.Unknown), lenv) + +val add_to_env : (id * value) -> lenv -> lenv +let add_to_env (id, entry) (LEnv i env) = (LEnv i (Map.insert (get_id id) entry env)) + +val in_mem : lmem -> nat -> value +let in_mem (LMem _ _ m _) n = + Map_extra.find n m + (* Map.lookup n m *) + +val update_mem : bool -> lmem -> nat -> value -> lmem +let update_mem track (LMem owner c m s) loc value = + let m' = Map.delete loc m in + let m' = Map.insert loc value m' in + let s' = if track then Set.insert loc s else s in + LMem owner c m' s' + +val clear_updates : lmem -> lmem +let clear_updates (LMem owner c m _) = LMem owner c m Set.empty + +(*Value helper functions*) + +val is_lit_vector : lit -> bool +let is_lit_vector (L_aux l _) = + match l with + | L_bin _ -> true + | L_hex _ -> true + | _ -> false +end + +val litV_to_vec : lit -> i_direction -> value +let litV_to_vec (L_aux lit l) (dir: i_direction) = + match lit with + | L_hex s -> + let to_v b = V_lit (L_aux b l) in + let hexes = List.map to_v + (List.concat + (List.map + (fun s -> match s with + | #'0' -> [L_zero;L_zero;L_zero;L_zero] + | #'1' -> [L_zero;L_zero;L_zero;L_one ] + | #'2' -> [L_zero;L_zero;L_one ;L_zero] + | #'3' -> [L_zero;L_zero;L_one ;L_one ] + | #'4' -> [L_zero;L_one ;L_zero;L_zero] + | #'5' -> [L_zero;L_one ;L_zero;L_one ] + | #'6' -> [L_zero;L_one ;L_one ;L_zero] + | #'7' -> [L_zero;L_one ;L_one ;L_one ] + | #'8' -> [L_one ;L_zero;L_zero;L_zero] + | #'9' -> [L_one ;L_zero;L_zero;L_one ] + | #'A' -> [L_one ;L_zero;L_one ;L_zero] + | #'B' -> [L_one ;L_zero;L_one ;L_one ] + | #'C' -> [L_one ;L_one ;L_zero;L_zero] + | #'D' -> [L_one ;L_one ;L_zero;L_one ] + | #'E' -> [L_one ;L_one ;L_one ;L_zero] + | #'F' -> [L_one ;L_one ;L_one ;L_one ] + | #'a' -> [L_one ;L_zero;L_one ;L_zero] + | #'b' -> [L_one ;L_zero;L_one ;L_one ] + | #'c' -> [L_one ;L_one ;L_zero;L_zero] + | #'d' -> [L_one ;L_one ;L_zero;L_one ] + | #'e' -> [L_one ;L_one ;L_one ;L_zero] + | #'f' -> [L_one ;L_one ;L_one ;L_one ] + | _ -> Assert_extra.failwith "Lexer did not restrict to valid hex" end) + (String.toCharList s))) in + V_vector (if is_inc(dir) then 0 else ((List.length hexes) - 1)) dir hexes + | L_bin s -> + let bits = List.map + (fun s -> match s with + | #'0' -> (V_lit (L_aux L_zero l)) + | #'1' -> (V_lit (L_aux L_one l)) + | _ -> Assert_extra.failwith "Lexer did not restrict to valid bin" + end) (String.toCharList s) in + V_vector (if is_inc(dir) then 0 else ((List.length bits) -1)) dir bits + | _ -> Assert_extra.failwith "litV predicate did not restrict to literal vectors" +end + +val list_nth : forall 'a . list 'a -> nat -> 'a +let list_nth l n = List_extra.nth l n + +val list_length : forall 'a . list 'a -> integer +let list_length l = integerFromNat (List.length l) + +val taint: value -> set reg_form -> value +let rec taint value regs = + if Set.null regs + then value + else match value with + | V_track value rs -> taint value (regs union rs) + | V_tuple vals -> V_tuple (List.map (fun v -> taint v regs) vals) + | _ -> V_track value regs +end + +val retaint: value -> value -> value +let retaint orig updated = + match orig with + | V_track _ rs -> taint updated rs + | _ -> updated +end + +val detaint: value -> value +let rec detaint value = + match value with + | V_track value _ -> detaint value + | v -> v +end + +(* the inner lambda is to make Isabelle happier about overlapping patterns *) +let rec binary_taint thunk = fun vall valr -> + match (vall,valr) with + | (V_track vl rl,V_track vr rr) -> taint (binary_taint thunk vl vr) (rl union rr) + | (V_track vl rl,vr) -> taint (binary_taint thunk vl vr) rl + | (vl,V_track vr rr) -> taint (binary_taint thunk vl vr) rr + | (vl,vr) -> thunk vl vr +end + +let rec merge_values v1 v2 = + if value_eq true v1 v2 + then v1 + else match (v1,v2) with + | (V_lit l, V_lit l') -> if lit_eq l l' then v1 else V_unknown + | (V_boxref n t, V_boxref m t') -> + (*Changes to memory handled by merge_mem*) + if n = m then v1 else V_unknown + | (V_tuple l, V_tuple l') -> + V_tuple (map2 merge_values l l') + | (V_list l, V_list l') -> + if (List.length l = List.length l') + then V_list (map2 merge_values l l') + else V_unknown + | (V_vector n b l, V_vector m b' l') -> + if b = b' && (List.length l = List.length l') + then V_vector n b (map2 merge_values l l') + else V_unknown + | (V_vector_sparse n o b l v, V_vector_sparse m p b' l' v') -> + if (n=m && o=p && b=b' && listEqualBy (fun (i,_) (i',_) -> i=i') l l') + then V_vector_sparse n o b (map2 (fun (i,v1) (i',v2) -> (i, merge_values v1 v2)) l l') (merge_values v v') + else V_unknown + | (V_record t l, V_record t' l') -> + (*assumes canonical order for fields in a record*) + if t = t' && List.length l = length l' + then V_record t (map2 (fun (i,v1) (_,v2) -> (i, merge_values v1 v2)) l l') + else V_unknown + | (V_ctor i t (C_Enum j) v, V_ctor i' t' (C_Enum j') v') -> + if i = i' then v1 else V_unknown + | (V_ctor _ _ (C_Enum i) _,V_lit (L_aux (L_num j) _)) -> if i = (natFromInteger j) then v1 else V_unknown + | (V_lit (L_aux (L_num j) _), V_ctor _ _ (C_Enum i) _) -> if i = (natFromInteger j) then v2 else V_unknown + | (V_ctor i t ckind v, V_ctor i' t' _ v') -> + if t = t' && i = i' + then (V_ctor i t ckind (merge_values v v')) + else V_unknown + | (V_unknown,V_unknown) -> V_unknown + | (V_track v1 ts1, V_track v2 ts2) -> + taint (merge_values v1 v2) (ts1 union ts2) + | (V_track v1 ts, v2) -> taint (merge_values v1 v2) ts + | (v1,V_track v2 ts) -> taint (merge_values v1 v2) ts + | (_, _) -> V_unknown +end + +val merge_lmems : lmem -> lmem -> lmem +let merge_lmems ((LMem owner1 c1 mem1 set1) as lmem1) ((LMem owner2 c2 mem2 set2) as lmem2) = + let diff1 = Set_extra.toList (set1 \ set2) in + let diff2 = Set_extra.toList (set2 \ set1) in + let inters = Set_extra.toList (set1 inter set2) in + let c = max c1 c2 in + let mem = LMem owner1 c (if c1 >= c2 then mem1 else mem2) Set.empty in + let diff_mem1 = + List.foldr + (fun i mem -> update_mem false mem i + (match Map.lookup i mem2 with + | Nothing -> V_unknown + | Just v -> merge_values (in_mem lmem1 i) v end)) mem diff1 in + let diff_mem2 = + List.foldr + (fun i mem -> update_mem false mem i + (match Map.lookup i mem1 with + | Nothing -> V_unknown + | Just v -> merge_values (in_mem lmem2 i) v end)) diff_mem1 diff2 in + List.foldr + (fun i mem -> update_mem false mem i (merge_values (in_mem lmem1 i) (in_mem lmem2 i))) + diff_mem2 inters + +let vector_length v = match (detaint v) with + | V_vector n inc vals -> List.length vals + | V_vector_sparse n m inc vals def -> m + | V_lit _ -> 1 + | _ -> 0 +end + +val access_vector : value -> nat -> value +let access_vector v n = + retaint v (match (detaint v) with + | V_unknown -> V_unknown + | V_lit (L_aux L_undef _) -> v + | V_lit (L_aux L_zero _) -> v + | V_lit (L_aux L_one _ ) -> v + | V_vector m dir vs -> + list_nth vs (if is_inc(dir) then (n - m) else (m - n)) + | V_vector_sparse _ _ _ vs d -> + match (List.lookup n vs) with + | Nothing -> d + | Just v -> v end + | _ -> Assert_extra.failwith ("access_vector given unexpected " ^ string_of_value v) + end ) + +val from_n_to_n :forall 'a. nat -> nat -> list 'a -> list 'a +let from_n_to_n from to_ ls = take (to_ - from + 1) (drop from ls) + +val slice_sparse_list : (nat -> nat -> bool) -> (nat -> nat) -> list (nat * value) -> nat -> nat -> ((list (nat * value)) * bool) +let rec slice_sparse_list compare update_n vals n1 n2 = + let sl = slice_sparse_list compare update_n in + if (n1 = n2) && (vals = []) + then ([],true) + else if (n1=n2) + then ([],false) + else match vals with + | [] -> ([],true) + | (i,v)::vals -> + if n1 = i + then let (rest,still_sparse) = (sl vals (update_n n1) n2) in ((i,v)::rest,still_sparse) + else if (compare n1 i) + then (sl vals (update_n n1) n2) + else let (rest,_) = (sl vals (update_n i) n2) in ((i,v)::rest,true) + end + +val slice_vector : value -> nat -> nat -> value +let slice_vector v n1 n2 = + retaint v (match detaint v with + | V_vector m dir vs -> + if is_inc(dir) + then V_vector n1 dir (from_n_to_n (n1 - m) (n2 - m) vs) + else V_vector n1 dir (from_n_to_n (m - n1) (m - n2) vs) + | V_vector_sparse m n dir vs d -> + let (slice, still_sparse) = + if is_inc(dir) + then slice_sparse_list (>) (fun i -> i + 1) vs n1 n2 + else slice_sparse_list (<) (fun i -> i - 1) vs n1 n2 in + if still_sparse && is_inc(dir) + then V_vector_sparse n1 (n2 - n1) dir slice d + else if is_inc(dir) then V_vector 0 dir (List.map snd slice) + else if still_sparse then V_vector_sparse n1 (n1 - n2) dir slice d + else V_vector n1 dir (List.map snd slice) + | _ -> Assert_extra.failwith ("slice_vector given unexpected " ^ string_of_value v) + end ) + +val update_field_list : list (id * value) -> env -> list (id * value) +let rec update_field_list base updates = + match base with + | [] -> [] + | (id,v)::bs -> match in_env updates (get_id id) with + | Just v -> (id,v)::(update_field_list bs updates) + | Nothing -> (id,v)::(update_field_list bs updates) end +end + +val fupdate_record : value -> value -> value +let fupdate_record base updates = + let fupdate_record_helper base updates = + (match (base,updates) with + | (V_record t bs,V_record _ us) -> V_record t (update_field_list bs (env_from_list us)) + | _ -> + Assert_extra.failwith ("fupdate_record given unexpected " ^ + string_of_value base ^ " and " ^ (string_of_value updates)) + end) in + binary_taint fupdate_record_helper base updates + +val fupdate_sparse : (nat -> nat -> bool) -> list (nat*value) -> nat -> value -> list (nat*value) +let rec fupdate_sparse comes_after vs n vexp = + match vs with + | [] -> [(n,vexp)] + | (i,v)::vs -> + if i = n then (i,vexp)::vs + else if (comes_after i n) then (n,vexp)::(i,v)::vs + else (i,v)::(fupdate_sparse comes_after vs n vexp) +end + +val fupdate_vec : value -> nat -> value -> value +let fupdate_vec v n vexp = + let tainted = binary_taint (fun v _ -> v) v vexp in + retaint tainted + (match detaint v with + | V_vector m dir vals -> + V_vector m dir (List.update vals (if is_inc(dir) then (n-m) else (m-n)) vexp) + | V_vector_sparse m o dir vals d -> + V_vector_sparse m o dir (fupdate_sparse (if is_inc(dir) then (>) else (<)) vals n vexp) d + | _ -> Assert_extra.failwith ("fupdate_vec given unexpected " ^ string_of_value v) + end) + +val replace_is : forall 'a. list 'a -> list 'a -> nat -> nat -> nat -> list 'a +let rec replace_is ls vs base start stop = + match (ls,vs) with + | ([],_) -> [] + | (ls,[]) -> ls + | (l::ls,v::vs) -> + if base >= start then + if start >= stop then v::ls + else v::(replace_is ls vs (base + 1) (start + 1) stop) + else l::(replace_is ls (v::vs) (base+1) start stop) + end + +val replace_sparse : (nat -> nat -> bool) -> list (nat * value) -> list (nat * value) -> list (nat * value) +let rec replace_sparse compare vals reps = + match (vals,reps) with + | ([],rs) -> rs + | (vs,[]) -> vs + | ((i1,v)::vs,(i2,r)::rs) -> + if i1 = i2 then (i2,r)::(replace_sparse compare vs rs) + else if (compare i1 i2) + then (i1,v)::(replace_sparse compare vs ((i2,r)::rs)) + else (i2,r)::(replace_sparse compare ((i1,v)::vs) rs) +end + +val fupdate_vector_slice : value -> value -> nat -> nat -> value +let fupdate_vector_slice vec replace start stop = + let fupdate_vec_help vec replace = + (match (vec,replace) with + | (V_vector m dir vals,V_vector r_m dir' reps) -> + V_vector m dir + (replace_is vals + (if dir=dir' then reps else (List.reverse reps)) + 0 (if is_inc(dir) then (start-m) else (m-start)) (if is_inc(dir) then (stop-m) else (m-stop))) + | (V_vector m dir vals, V_unknown) -> + V_vector m dir + (replace_is vals + (List.replicate (if is_inc(dir) then (stop-start) else (start-stop)) V_unknown) + 0 (if is_inc(dir) then (start-m) else (m-start)) (if is_inc(dir) then (stop-m) else (m-stop))) + | (V_vector_sparse m n dir vals d,V_vector _ _ reps) -> + let (_,repsi) = List.foldl (fun (i,rs) r -> ((if is_inc(dir) then i+1 else i-1), (i,r)::rs)) (start,[]) reps in + (V_vector_sparse m n dir (replace_sparse (if is_inc(dir) then (<) else (>)) vals (List.reverse repsi)) d) + | (V_vector_sparse m n dir vals d, V_unknown) -> + let (_,repsi) = List.foldl (fun (i,rs) r -> ((if is_inc(dir) then i+1 else i-1), (i,r)::rs)) (start,[]) + (List.replicate (if is_inc(dir) then (stop-start) else (start-stop)) V_unknown) in + (V_vector_sparse m n dir (replace_sparse (if is_inc(dir) then (<) else (>)) vals (List.reverse repsi)) d) + | (V_unknown,_) -> V_unknown + | _ -> Assert_extra.failwith ("fupdate vector slice given " ^ (string_of_value vec) + ^ " and " ^ (string_of_value replace)) + end) in + binary_taint fupdate_vec_help vec replace + +val update_vector_slice : bool -> value -> value -> nat -> nat -> lmem -> lmem +let update_vector_slice track vector value start stop mem = + match (detaint vector,detaint value) with + | ((V_boxref n t), v) -> + update_mem track mem n (fupdate_vector_slice (in_mem mem n) (retaint value v) start stop) + | ((V_vector m _ vs),(V_vector n _ vals)) -> + let (V_vector m' _ vs') = slice_vector vector start stop in + foldr2 (fun vbox v mem -> match vbox with + | V_boxref n t -> update_mem track mem n v end) + mem vs' vals + | ((V_vector m dir vs),(V_vector_sparse n o _ vals d)) -> + let (m',vs') = match slice_vector vector start stop with + | (V_vector m' _ vs') -> (m',vs') + | _ -> Assert_extra.failwith "slice_vector did not return vector" end in + let (_,mem) = foldr (fun vbox (i,mem) -> + match vbox with + | V_boxref n t -> + (if is_inc(dir) then i+1 else i-1, + update_mem track mem n (match List.lookup i vals with + | Nothing -> d + | Just v -> v end)) + | _ -> Assert_extra.failwith "Internal error: update_vector_slice not of boxes" + end) (m,mem) vs' in + mem + | ((V_vector m _ vs),v) -> + let (m',vs') = match slice_vector vector start stop with + | (V_vector m' _ vs') -> (m',vs') + | _ -> Assert_extra.failwith "slice vector didn't return vector" end in + List.foldr (fun vbox mem -> match vbox with + | V_boxref n t -> update_mem track mem n v + | _ -> Assert_extra.failwith "update_vector_slice not of boxes" end) + mem vs' + | _ -> Assert_extra.failwith ("update_vector_slice given unexpected " ^ string_of_value vector + ^ " and " ^ string_of_value value) +end + +let update_vector_start default_dir new_start expected_size v = + retaint v + (match detaint v with + | V_lit (L_aux L_zero _) -> V_vector new_start default_dir [v] + | V_lit (L_aux L_one _) -> V_vector new_start default_dir [v] + | V_vector m inc vs -> V_vector new_start inc vs (*Note, may need to shrink and check if still sparse *) + | V_vector_sparse m n dir vals d -> V_vector_sparse new_start n dir vals d + | V_unknown -> V_vector new_start default_dir (List.replicate expected_size V_unknown) + | V_lit (L_aux L_undef _) -> V_vector new_start default_dir (List.replicate expected_size v) + | _ -> Assert_extra.failwith ("update_vector_start given unexpected " ^ string_of_value v) + end) + +val in_ctors : list (id * typ) -> id -> maybe typ +let rec in_ctors ctors id = + match ctors with + | [] -> Nothing + | (cid,typ)::ctors -> if (get_id cid) = (get_id id) then Just typ else in_ctors ctors id +end + +(*Stack manipulation functions *) +(*Extends expression and context of 'top' stack frame *) +let add_to_top_frame e_builder stack = + match stack with + | Top -> Top + | Hole_frame id e t_level env mem stack -> + let (e',env') = (e_builder e env) in Hole_frame id e' t_level env' mem stack + | Thunk_frame e t_level env mem stack -> + let (e',env') = (e_builder e env) in Thunk_frame e' t_level env' mem stack + end + +(*Is this the innermost hole*) +let top_hole stack : bool = + match stack with + | Hole_frame _ (E_aux (E_id (Id_aux (Id "0") _)) _) _ _ _ Top -> true + | _ -> false +end + +let redex_id = id_of_string "0" +let mk_hole l annot t_level l_env l_mem = + Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) t_level l_env l_mem Top +let mk_thunk l annot t_level l_env l_mem = + Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,(intern_annot annot))) t_level l_env l_mem Top + +(*Converts a Hole_frame into a Thunk_frame, pushing to the top of the stack to insert the value at the innermost context *) +val add_answer_to_stack : stack -> value -> stack +let rec add_answer_to_stack stack v = + match stack with + | Top -> Top + | Hole_frame id e t_level env mem Top -> Thunk_frame e t_level (add_to_env (id,v) env) mem Top + | Thunk_frame e t_level env mem Top -> Thunk_frame e t_level env mem Top + | Hole_frame id e t_level env mem stack -> Hole_frame id e t_level env mem (add_answer_to_stack stack v) + | Thunk_frame e t_level env mem stack -> Thunk_frame e t_level env mem (add_answer_to_stack stack v) +end + +(*Throws away all but the environment and local memory of the top stack frame, putting given expression in this context *) +val set_in_context : stack -> exp tannot -> stack +let rec set_in_context stack e = + match stack with + | Top -> Top + | Hole_frame id oe t_level env mem Top -> Thunk_frame e t_level env mem Top + | Thunk_frame oe t_level env mem Top -> Thunk_frame e t_level env mem Top + | Hole_frame _ _ _ _ _ s -> set_in_context s e + | Thunk_frame _ _ _ _ s -> set_in_context s e +end + +let get_stack_state stack = + match stack with + | Top -> Assert_extra.failwith "Top reached in extracting stack state" + | Hole_frame id exp top_level lenv lmem stack -> (lenv,lmem) + | Thunk_frame exp top_level lenv lmem stack -> (lenv,lmem) +end + +let rec update_stack_state stack ((LMem name c mem _) as lmem) = + match stack with + | Top -> Top + | Hole_frame id oe t_level env (LMem _ _ _ s) Top -> + (match Map.lookup (0 : nat) mem with + | Nothing -> Thunk_frame oe t_level (add_to_env (id,V_unknown) env) (LMem name c mem s) Top + | Just v -> Thunk_frame oe t_level (add_to_env (id, v) env) (LMem name c (Map.delete (0 : nat) mem) s) Top end) + | Thunk_frame e t_level env _ Top -> Thunk_frame e t_level env lmem Top + | Hole_frame id e t_level env mem s -> Hole_frame id e t_level env mem (update_stack_state s lmem) + | Thunk_frame e t_level env mem s -> Thunk_frame e t_level env mem (update_stack_state s lmem) +end + +let rec clear_stack_state stack = + match stack with + | Top -> Top + | Hole_frame id e t_level env lmem Top -> Hole_frame id e t_level env (clear_updates lmem) Top + | Thunk_frame e t_level env lmem Top -> Thunk_frame e t_level env (clear_updates lmem) Top + | Hole_frame id e t_level env lmem s -> Hole_frame id e t_level env lmem (clear_stack_state s) + | Thunk_frame e t_level env lmem s -> Thunk_frame e t_level env lmem (clear_stack_state s) +end + +let rec remove_top_stack_frame stack = + match stack with + | Top -> Top + | Hole_frame _ _ _ _ _ Top -> Top + | Thunk_frame _ _ _ _ Top -> Top + | Hole_frame id e t_level env lmem stack -> Hole_frame id e t_level env lmem (remove_top_stack_frame stack) + | Thunk_frame e t_level env lmem stack -> Thunk_frame e t_level env lmem (remove_top_stack_frame stack) +end + +(*functions for converting in progress evaluation back into expression for building current continuation*) +let rec combine_typs ts = + match ts with + | [] -> mk_typ_var "fresh" + | [t] -> t + | t::ts -> + let t' = combine_typs ts in + match (t,t') with + | (_,Typ_aux (Typ_var _) _) -> t + | ((Typ_aux (Typ_app (Id_aux (Id "range") _) + [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant bot1) _)) _; Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant top1) _)) _]) _), + (Typ_aux (Typ_app (Id_aux (Id "range") _) + [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant bot2) _)) _; Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant top2) _)) _]) _)) -> + let (smallest,largest) = + if bot1 <= bot2 + then if top1 <= top2 then (bot1, top2) else (bot1, top1) + else if top1 <= top2 then (bot2, top2) else (bot2, top1) in + mk_typ_app "range" [Typ_arg_nexp (nconstant smallest); Typ_arg_nexp (nconstant largest)] + | ((Typ_aux (Typ_app (Id_aux (Id "atom") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant a1) _)) _]) _), + (Typ_aux (Typ_app (Id_aux (Id "atom") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant a2) _)) _]) _)) -> + if a1 = a2 + then t + else + let (smaller,larger) = if a1 < a2 then (a1,a2) else (a2,a1) in + mk_typ_app "range" [Typ_arg_nexp (nconstant smaller); Typ_arg_nexp (nconstant larger)] + | (Typ_aux (Typ_app (Id_aux (Id "range") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant bot) _)) _; + Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant top) _)) _]) _, + Typ_aux (Typ_app (Id_aux (Id "atom") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant a) _)) _]) _) -> + if bot <= a && a <= top + then t + else if bot <= a && top <= a + then mk_typ_app "range" [Typ_arg_nexp (nconstant bot); Typ_arg_nexp (nconstant a)] + else mk_typ_app "range" [Typ_arg_nexp (nconstant a); Typ_arg_nexp (nconstant top)] + | (Typ_aux (Typ_app (Id_aux (Id "atom") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant a) _)) _]) _, + Typ_aux (Typ_app (Id_aux (Id "range") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant bot) _)) _; + Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant top) _)) _]) _) -> + if bot <= a && a <= top + then t + else if bot <= a && top <= a + then mk_typ_app "range" [Typ_arg_nexp (nconstant bot); Typ_arg_nexp (nconstant a)] + else mk_typ_app "range" [Typ_arg_nexp (nconstant a); Typ_arg_nexp (nconstant top)] + | (Typ_aux (Typ_app (Id_aux (Id "vector") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant b1) _)) _; + Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant r1) _)) _; + Typ_arg_aux (Typ_arg_order (Ord_aux o1 _)) _; + Typ_arg_aux (Typ_arg_typ t1) _]) _, + Typ_aux (Typ_app (Id_aux (Id "vector") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant b2) _)) _; + Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant r2) _)) _; + Typ_arg_aux (Typ_arg_order (Ord_aux o2 _)) _; + Typ_arg_aux (Typ_arg_typ t2) _]) _) -> + let t = combine_typs [t1;t2] in + match (o1,o2) with + | (Ord_inc,Ord_inc) -> + let larger_start = if b1 < b2 then b2 else b1 in + let smaller_rise = if r1 < r2 then r1 else r2 in + mk_typ_app "vector" [Typ_arg_nexp (nconstant larger_start); Typ_arg_nexp (nconstant smaller_rise); + Typ_arg_order (Ord_aux o1 Unknown); Typ_arg_typ t] + | (Ord_dec,Ord_dec) -> + let smaller_start = if b1 < b2 then b1 else b2 in + let smaller_fall = if r1 < r2 then r2 else r2 in + mk_typ_app "vector" [Typ_arg_nexp (nconstant smaller_start); Typ_arg_nexp (nconstant smaller_fall); + Typ_arg_order (Ord_aux o1 Unknown); Typ_arg_typ t] + | _ -> mk_typ_var "fresh" + end + | _ -> t' + end + end + +let reg_to_t r = + match r with + | Form_Reg _ (Just (t,_,_,_,_)) _ -> t + | _ -> mk_typ_var "fresh" + end + +let rec val_typ v = + match v with + | V_boxref n t -> mk_typ_app "reg" [Typ_arg_typ t] + | V_lit (L_aux lit _) -> + match lit with + | L_unit -> mk_typ_id "unit" + | L_true -> mk_typ_id "bit" + | L_false -> mk_typ_id "bit" + | L_one -> mk_typ_id "bit" + | L_zero -> mk_typ_id "bit" + | L_string _ -> mk_typ_id "string" + | L_num n -> mk_typ_app "atom" [Typ_arg_nexp (nconstant n)] + | L_undef -> mk_typ_var "fresh" + | L_hex _ -> Assert_extra.failwith "literal hex not removed" + | L_bin _ -> Assert_extra.failwith "literal bin not removed" + end + | V_tuple vals -> mk_typ_tup (List.map val_typ vals) + | V_vector n dir vals -> + let ts = List.map val_typ vals in + let t = combine_typs ts in + mk_typ_app "vector" [Typ_arg_nexp (nconstant (integerFromNat n)); Typ_arg_nexp (nconstant (list_length vals)); + Typ_arg_order (Ord_aux (if is_inc dir then Ord_inc else Ord_dec) Unknown); + Typ_arg_typ t] + | V_vector_sparse n m dir vals d -> + let ts = List.map val_typ (d::(List.map snd vals)) in + let t = combine_typs ts in + mk_typ_app "vector" [Typ_arg_nexp (nconstant (integerFromNat n)); Typ_arg_nexp (nconstant (integerFromNat m)); + Typ_arg_order (Ord_aux (if is_inc dir then Ord_inc else Ord_dec) Unknown); + Typ_arg_typ t] + | V_record t ivals -> t + | V_list vals -> + let ts = List.map val_typ vals in + let t = combine_typs ts in + mk_typ_app "list" [Typ_arg_typ t] + | V_ctor id t _ vals -> t + | V_register reg -> reg_to_t reg + | V_track v _ -> val_typ v + | V_unknown -> mk_typ_var "fresh" + | V_register_alias _ _ -> mk_typ_var "fresh" + end + +let rec to_exp mode env v : (exp tannot * lenv) = + ((E_aux (E_internal_value v) (Interp_ast.Unknown, (val_annot (val_typ v)))), env) + +val env_to_let : interp_mode -> lenv -> (exp tannot) -> lenv -> ((exp tannot) * lenv) +let rec env_to_let_help mode env taint_env = match env with + | [] -> ([],taint_env) + | (i,v)::env -> + let t = (val_typ v) in + let tan = (val_annot t) in + let (e,taint_env) = to_exp mode taint_env v in + let (rest,taint_env) = env_to_let_help mode env taint_env in + ((((P_aux (P_id (id_of_string i)) (Unknown,tan)),e),t)::rest, taint_env) +end + +let env_to_let mode (LEnv _ env) (E_aux e annot) taint_env = + match env_to_let_help mode (Set_extra.toList (Map.toSet env)) taint_env with + | ([],taint_env) -> (E_aux e annot,taint_env) + | ([((p,e),t)],tain_env) -> + (E_aux (E_let (LB_aux (LB_val p e) (Unknown,(val_annot t))) e) annot,taint_env) + | (pts,taint_env) -> + let ts = List.map snd pts in + let pes = List.map fst pts in + let ps = List.map fst pes in + let es = List.map snd pes in + let t = mk_typ_tup ts in + let tan = val_annot t in + (E_aux (E_let (LB_aux (LB_val (P_aux (P_tup ps) (Unknown,tan)) + (E_aux (E_tuple es) (Unknown,tan))) (Unknown,tan)) + (E_aux e annot)) + annot, taint_env) +end + +let fix_up_nondet typ branches annot = + match typ with + | Typ_aux (Typ_id (Id_aux (Id "unit") _)) _ -> (branches, Nothing) + | _ -> ((List.map + (fun e -> E_aux (E_assign (LEXP_aux (LEXP_id redex_id) annot) e) annot) branches), Just "0") +end + +(* match_pattern returns a tuple of (pattern_matches? , pattern_passed_due_to_unknown?, env_of_pattern *) +val match_pattern : top_level -> pat tannot -> value -> bool * bool * lenv +let rec match_pattern t_level (P_aux p (_, annot)) value_whole = + let (Env fdefs instrs default_dir lets regs ctors subregs aliases debug) = t_level in + let (t,tag,cs) = match annot with + | Just(t,tag,cs,e,_) -> (t,tag,cs) + | Nothing -> (mk_typ_var "fresh",Tag_empty,[]) end in + let value = detaint value_whole in + let taint_pat v = binary_taint (fun v _ -> v) v value_whole in + match p with + | P_lit(lit) -> + if is_lit_vector lit then + let (n, inc, bits) = match litV_to_vec lit default_dir + with | V_vector n inc bits -> (n, inc, bits) + | _ -> Assert_extra.failwith "litV_to_vec failed" end in + match value with + | V_lit litv -> + if is_lit_vector litv then + let (n', inc', bits') = match litV_to_vec litv default_dir with + | V_vector n' inc' bits' -> (n', inc', bits') + | _ -> Assert_extra.failwith "litV_to_vec failed" end in + if n=n' && inc = inc' then (foldr2 (fun l r rest -> (l = r) && rest) true bits bits',false, eenv) + else (false,false,eenv) + else (false,false,eenv) + | V_vector n' inc' bits' -> + (foldr2 (fun l r rest -> (l=r) && rest) true bits bits',false,eenv) + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) end + else + match value with + | V_lit(litv) -> (lit = litv, false,eenv) + | V_vector _ _ [V_lit(litv)] -> (lit = litv,false,eenv) + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) + end + | P_wild -> (true,false,eenv) + | P_as pat id -> + let (matched_p,used_unknown,bounds) = match_pattern t_level pat value in + if matched_p then + (matched_p,used_unknown,(add_to_env (id,value_whole) bounds)) + else (false,false,eenv) + | P_typ typ pat -> match_pattern t_level pat value_whole + | P_id id -> (true, false, (LEnv 0 (Map.fromList [((get_id id),value_whole)]))) + | P_app (Id_aux id _) pats -> + match value with + | V_ctor (Id_aux cid _) t ckind (V_tuple vals) -> + if (id = cid && ((List.length pats) = (List.length vals))) + then foldr2 + (fun pat value (matched_p,used_unknown,bounds) -> + if matched_p then + let (matched_p,used_unknown',new_bounds) = match_pattern t_level pat (taint_pat value) in + (matched_p, (used_unknown || used_unknown'), (union_env new_bounds bounds)) + else (false,false,eenv)) (true,false,eenv) pats vals + else (false,false,eenv) + | V_ctor (Id_aux cid _) t ckind (V_track (V_tuple vals) r) -> + if (id = cid && ((List.length pats) = (List.length vals))) + then foldr2 + (fun pat value (matched_p,used_unknown,bounds) -> + if matched_p then + let (matched_p,used_unknown',new_bounds) = match_pattern t_level pat (taint value r) in + (matched_p, (used_unknown || used_unknown'), (union_env new_bounds bounds)) + else (false,false,eenv)) (true,false,eenv) pats vals + else (false,false,eenv) + | V_ctor (Id_aux cid _) t ckind v -> + if id = cid + then (match (pats,detaint v) with + | ([],(V_lit (L_aux L_unit _))) -> (true,false,eenv) + | ([P_aux (P_lit (L_aux L_unit _)) _],(V_lit (L_aux L_unit _))) -> (true,false,eenv) + | ([p],_) -> match_pattern t_level p v + | _ -> (false,false,eenv) end) + else (false,false,eenv) + | V_lit (L_aux (L_num i) _) -> + match tag with + | Tag_enum _ -> + match Map.lookup (get_id (Id_aux id Unknown)) lets with + | Just(V_ctor _ t (C_Enum j) _) -> + if i = (integerFromNat j) then (true,false,eenv) + else (false,false,eenv) + | _ -> (false,false,eenv) end + | _ -> (false,false,eenv) end + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) end + | P_record fpats _ -> + match value with + | V_record t fvals -> + let fvals_env = env_from_list fvals in + List.foldr + (fun (FP_aux (FP_Fpat id pat) _) (matched_p,used_unknown,bounds) -> + if matched_p then + let (matched_p,used_unknown',new_bounds) = match in_env fvals_env (get_id id) with + | Nothing -> (false,false,eenv) + | Just v -> match_pattern t_level pat v end in + (matched_p, (used_unknown || used_unknown'), (union_env new_bounds bounds)) + else (false,false,eenv)) (true,false,eenv) fpats + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) + end + | P_vector pats -> + match value with + | V_vector n dir vals -> + if ((List.length vals) = (List.length pats)) + then foldr2 + (fun pat value (matched_p,used_unknown,bounds) -> + if matched_p then + let (matched_p,used_unknown',new_bounds) = match_pattern t_level pat (taint_pat value) in + (matched_p, (used_unknown||used_unknown'), (union_env new_bounds bounds)) + else (false,false,eenv)) + (true,false,eenv) pats vals + else (false,false,eenv) + | V_vector_sparse n m dir vals d -> + if (m = (List.length pats)) + then let (_,matched_p,used_unknown,bounds) = + foldr + (fun pat (i,matched_p,used_unknown,bounds) -> + if matched_p + then let (matched_p,used_unknown',new_bounds) = + match_pattern t_level pat (match List.lookup i vals with + | Nothing -> d + | Just v -> (taint_pat v) end) in + ((if is_inc(dir) then i+1 else i-1), + matched_p,used_unknown||used_unknown',(union_env new_bounds bounds)) + else (i,false,false,eenv)) (n,true,false,eenv) pats in + (matched_p,used_unknown,bounds) + else (false,false,eenv) + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) + end + | P_vector_concat pats -> + match value with + | V_vector n dir vals -> + let (matched_p,used_unknown,bounds,remaining_vals) = vec_concat_match_top t_level pats vals dir in + (*List.foldl + (fun (matched_p,used_unknown,bounds,r_vals) (P_aux pat (l,Just(t,_,_,_))) -> + let (matched_p,used_unknown',bounds',matcheds,r_vals) = vec_concat_match_plev t_level pat r_vals inc l t in + (matched_p,(used_unknown || used_unknown'),(union_env bounds' bounds),r_vals)) (true,false,eenv,vals) pats in*) + if matched_p && ([] = remaining_vals) then (matched_p,used_unknown,bounds) else (false,false,eenv) + | V_unknown -> (true,true,eenv) + | _ -> (false,false, eenv) + end + | P_tup(pats) -> + match value with + | V_tuple(vals) -> + if ((List.length pats)= (List.length vals)) + then foldr2 + (fun pat v (matched_p,used_unknown,bounds) -> if matched_p then + let (matched_p,used_unknown',new_bounds) = match_pattern t_level pat (taint_pat v) in + (matched_p,used_unknown ||used_unknown', (union_env new_bounds bounds)) + else (false,false,eenv)) + (true,false,eenv) pats vals + else (false,false,eenv) + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) + end + | P_list(pats) -> + match value with + | V_list(vals) -> + if ((List.length pats)= (List.length vals)) + then foldr2 + (fun pat v (matched_p,used_unknown,bounds) -> if matched_p then + let (matched_p,used_unknown',new_bounds) = match_pattern t_level pat (taint_pat v) in + (matched_p,used_unknown|| used_unknown', (union_env new_bounds bounds)) + else (false,false,eenv)) + (true,false,eenv) pats vals + else (false,false,eenv) + | V_unknown -> (true,true,eenv) + | _ -> (false,false,eenv) end + end + +and vec_concat_match_top t_level pats r_vals dir : ((*matched_p*) bool * (*used_unknown*) bool * lenv * (list value)) = + match pats with + | [] -> (true,false,eenv,r_vals) + | [(P_aux p (l,Just(t,_,_,_,_)))] -> + let (matched_p,used_unknown,bounds,_,r_vals) = vec_concat_match_plev t_level p r_vals dir l true t in + (matched_p,used_unknown,bounds,r_vals) + | (P_aux p (l,Just(t,_,_,_,_)))::pats -> + let (matched_p,used_unknown,bounds,matcheds,r_vals) = vec_concat_match_plev t_level p r_vals dir l false t in + if matched_p then + let (matched_p',used_unknown',bounds',r_vals) = vec_concat_match_top t_level pats r_vals dir in + (matched_p',(used_unknown || used_unknown'),union_env bounds' bounds, r_vals) + else (false,false,eenv,r_vals) + | _ -> Assert_extra.failwith "Type annotation illformed" +end + +and vec_concat_match_plev t_level pat r_vals dir l last_pat t = + match pat with + | P_lit (L_aux (L_bin bin_string) l') -> + let bin_chars = toCharList bin_string in + let binpats = List.map + (fun b -> P_aux (match b with + | #'0' -> P_lit (L_aux L_zero l') + | #'1' -> P_lit (L_aux L_one l') + | _ -> Assert_extra.failwith "bin not 0 or 1" end) (l',Nothing)) bin_chars in + vec_concat_match t_level binpats r_vals + | P_vector pats -> vec_concat_match t_level pats r_vals + | P_id id -> + (match t with + | Typ_aux (Typ_app (Id_aux (Id "vector") _) [_;Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant i) _)) _;_;_]) _ -> + let wilds = List.genlist (fun _ -> P_aux P_wild (l,Nothing)) (natFromInteger i) in + let (matched_p,used_unknown,bounds,matcheds,r_vals) = vec_concat_match t_level wilds r_vals in + if matched_p + then (matched_p, used_unknown, + (add_to_env (id,(V_vector (if is_inc(dir) then 0 else ((List.length matcheds) - 1)) dir matcheds)) + bounds), + matcheds,r_vals) + else (false,false,eenv,[],[]) + | Typ_aux (Typ_app (Id_aux (Id "vector") _) [_;Typ_arg_aux (Typ_arg_nexp nc) _;_;_]) _ -> + if last_pat + then + (true,false, + (add_to_env (id,(V_vector (if is_inc(dir) then 0 else ((List.length r_vals) - 1)) dir r_vals)) eenv), + r_vals,[]) + else (false,false,eenv,[],[]) (*TODO use some constraint bounds here*) + | _ -> + if last_pat + then + (true,false, + (add_to_env (id,(V_vector (if is_inc(dir) then 0 else ((List.length r_vals) -1 )) dir r_vals)) eenv), + r_vals,[]) + else (false,false,eenv,[],[]) end) + | P_wild -> (match t with + | Typ_aux (Typ_app (Id_aux (Id "vector") _) [_;Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant i) _)) _;_;_]) _ -> + let wilds = List.genlist (fun _ -> P_aux P_wild (l,Nothing)) (natFromInteger i) in + vec_concat_match t_level wilds r_vals + | Typ_aux (Typ_app (Id_aux (Id "vector") _) [_;Typ_arg_aux (Typ_arg_nexp nc) _;_;_]) _ -> + if last_pat + then + (true,false,eenv,r_vals,[]) + else (false,false,eenv,[],[]) (*TODO use some constraint bounds here*) + | _ -> + if last_pat + then + (true,false,eenv,r_vals,[]) + else (false,false,eenv,[],[]) end) + | P_as (P_aux pat (l',Just(t',_,_,_,_))) id -> + let (matched_p, used_unknown, bounds,matcheds,r_vals) = + vec_concat_match_plev t_level pat r_vals dir l last_pat t' in + if matched_p + then (matched_p, used_unknown, + (add_to_env (id,V_vector (if is_inc(dir) then 0 else (List.length matcheds)) dir matcheds) bounds), + matcheds,r_vals) + else (false,false,eenv,[],[]) + | P_typ _ (P_aux p (l',Just(t',_,_,_,_))) -> vec_concat_match_plev t_level p r_vals dir l last_pat t + | _ -> (false,false,eenv,[],[]) end + (*TODO Need to support indexed here, skipping intermediate numbers but consumming r_vals, and as *) + +and vec_concat_match t_level pats r_vals = + match pats with + | [] -> (true,false,eenv,[],r_vals) + | pat::pats -> match r_vals with + | [] -> (false,false,eenv,[],[]) + | r::r_vals -> + let (matched_p,used_unknown,new_bounds) = match_pattern t_level pat r in + if matched_p then + let (matched_p,used_unknown',bounds,matcheds,r_vals) = vec_concat_match t_level pats r_vals in + (matched_p, used_unknown||used_unknown',(union_env new_bounds bounds),r :: matcheds,r_vals) + else (false,false,eenv,[],[]) end + end + + +(* Returns all matches using Unknown until either there are no more matches or a pattern matches with no Unknowns used *) +val find_funcl : top_level -> list (funcl tannot) -> value -> list (lenv * bool * (exp tannot)) +let rec find_funcl t_level funcls value = + match funcls with + | [] -> [] + | (FCL_aux (FCL_Funcl id (Pat_aux (Pat_exp pat exp) _)) _)::funcls -> + let (is_matching,used_unknown,env) = match_pattern t_level pat value in + if (is_matching && used_unknown) + then (env,used_unknown,exp)::(find_funcl t_level funcls value) + else if is_matching then [(env,used_unknown,exp)] + else find_funcl t_level funcls value + end + +(*see above comment*) +val find_case : top_level -> list (pexp tannot) -> value -> list (lenv * bool * (exp tannot)) +let rec find_case t_level pexps value = + match pexps with + | [] -> [] + | (Pat_aux (Pat_exp p e) _)::pexps -> + let (is_matching,used_unknown,env) = match_pattern t_level p value in + if (is_matching && used_unknown) + then (env,used_unknown,e)::find_case t_level pexps value + else if is_matching then [(env,used_unknown,e)] + else find_case t_level pexps value + end + +val interp_main : interp_mode -> top_level -> lenv -> lmem -> (exp tannot) -> (outcome * lmem * lenv) +val exp_list : interp_mode -> top_level -> ((list (exp tannot)) -> lenv -> ((exp tannot) * lenv)) -> (list value -> value) -> lenv -> lmem -> list value -> list (exp tannot) -> (outcome * lmem * lenv) +val interp_lbind : interp_mode -> top_level -> lenv -> lmem -> (letbind tannot) -> ((outcome * lmem * lenv) * (maybe ((exp tannot) -> (letbind tannot)))) +val interp_alias_read : interp_mode -> top_level -> lenv -> lmem -> (alias_spec tannot) -> (outcome * lmem * lenv) + +let resolve_outcome to_match value_thunk action_thunk = + match to_match with + | (Value v,lm,le) -> value_thunk v lm le + | (Action action stack,lm,le) -> (action_thunk (Action action stack), lm,le) + | (Error l s,lm,le) -> (Error l s,lm,le) +end + +let string_of_action a = + (match a with + | Read_reg r _ -> "(Read_reg " ^ string_of_reg_form r ^ " _)" + | Write_reg r _ _ -> "(Write_reg " ^ string_of_reg_form r ^ " _ _)" + | Read_mem id v _ -> "(Read_mem " ^ string_of_id id ^ " " ^ debug_print_value v ^ " _)" + | Read_mem_tagged id v _ -> "(Read_mem_tagged " ^ string_of_id id ^ " " ^ debug_print_value v ^ " _)" + | Write_mem _ _ _ _ -> "(Write_mem _ _ _ _)" + | Write_ea id v -> "(Write_ea " ^ string_of_id id ^ " " ^ debug_print_value v ^ " _)" + | Write_memv _ _ _ -> "(Write_memv _ _ _)" + | Excl_res id -> "(Excl_res " ^ string_of_id id ^ ")" + | Write_memv_tagged _ _ _ _ -> "(Write_memv_tagged _ _ _ _)" + | Barrier id v -> "(Barrier " ^ string_of_id id ^ " " ^ debug_print_value v ^ ")" + | Footprint id v -> "(Footprint " ^ string_of_id id ^ " " ^ debug_print_value v ^ ")" + | Nondet exps _ -> "(Nondet [" ^ String.concat "; " (List.map string_of_exp exps) ^ "] _)" + | Call_extern s v -> "(Call_extern \"" ^ s ^ "\" " ^ debug_print_value v ^ ")" + | Return v -> "(Return " ^ debug_print_value v ^ ")" + | Exit exp -> "(Exit " ^ string_of_exp exp ^ ")" + | Fail v -> "(Fail " ^ debug_print_value v ^ ")" + | Step _ _ _ -> "(Step _ _ _)" + end) + +instance (Show action) + let show action = string_of_action action +end + +let string_of_outcome outcome = + (match outcome with + | Value v -> "(Value " ^ debug_print_value v ^ ")" + | Action a _ -> "(Action " ^ string_of_action a ^ " _)" + | Error _ s -> "(Error _ \"" ^ s ^ "\")" + end) + +instance (Show outcome) + let show outcome = string_of_outcome outcome +end + +let update_stack o fn = match o with + | Action act stack -> Action act (fn stack) + | _ -> o +end + +let debug_out fn value e tl lm le = + (Action (Step (get_exp_l e) fn value) (Thunk_frame e tl le lm Top),lm,le) + +let to_exps mode env vals = + List.foldr (fun v (es,env) -> let (e,env') = to_exp mode env v in (e::es, union_env env' env)) ([],env) vals + +let get_num v = match v with + | V_lit (L_aux (L_num n) _) -> n + | _ -> 0 end + +(*Interpret a list of expressions, tracking local state but evaluating in the same scope (i.e. not tracking env) *) +let rec __exp_list mode t_level build_e build_v l_env l_mem vals exps = + match exps with + | [ ] -> (Value (build_v vals), l_mem, l_env) + | e::exps -> + resolve_outcome (interp_main mode t_level l_env l_mem e) + (fun value lm le -> exp_list mode t_level build_e build_v l_env lm (vals++[value]) exps) + (fun a -> update_stack a (add_to_top_frame + (fun e env -> + let (es,env') = to_exps mode env vals in + let (e,env'') = build_e (es++(e::exps)) env' in + (e,env'')))) + end + +and exp_list mode t_level build_e build_v l_env l_mem vals exps = + let _ = debug_fun_enter mode "exp_list" [show vals; show exps] in + let retval = __exp_list (indent_mode mode) t_level build_e build_v l_env l_mem vals exps in + let _ = debug_fun_exit mode "exp_list" retval in + retval + +and __interp_main mode t_level l_env l_mem (E_aux exp (l,annot)) = + let (Env fdefs instrs default_dir lets regs ctors subregs aliases debug) = t_level in + let (typ,tag,ncs,effect,reffect) = match annot with + | Nothing -> + (mk_typ_var "fresh_v", Tag_empty,[],(Effect_aux (Effect_set []) Unknown),(Effect_aux (Effect_set []) Unknown)) + | Just(t, tag, ncs, ef,efr) -> (t,tag,ncs,ef,efr) end in + match exp with + | E_internal_value v -> (Value v, l_mem, l_env) + | E_lit lit -> + if is_lit_vector lit + then let is_inc = (match typ with + | Typ_aux (Typ_app (Id_aux (Id "vector") _) [_;_;Typ_arg_aux (Typ_arg_order (Ord_aux Ord_inc _)) _;_]) _ -> IInc | _ -> IDec end) in + (Value (litV_to_vec lit is_inc),l_mem,l_env) + else (Value (V_lit (match lit with + | L_aux L_false loc -> L_aux L_zero loc + | L_aux L_true loc -> L_aux L_one loc + | _ -> lit end)), l_mem,l_env) + | E_comment _ -> (Value unitv, l_mem,l_env) + | E_comment_struc _ -> (Value unitv, l_mem, l_env) + | E_cast ((Typ_aux typ _) as ctyp) exp -> + (*Cast is either a no-op, a signal to read a register, or a signal to change the start of a vector *) + resolve_outcome + (interp_main mode t_level l_env l_mem exp) + (fun v lm le -> + (* Potentially use cast to change vector start position *) + let conditional_update_vstart () = + match typ with + | Typ_app (Id_aux (Id "vector") _) [Typ_arg_aux (Typ_arg_nexp(Nexp_aux (Nexp_constant i) _)) _;_;_;_] -> + let i = natFromInteger i in + match (detaint v) with + | V_vector start dir vs -> + if start = i then (Value v,lm,le) else (Value (update_vector_start dir i 1 v),lm,le) + | _ -> (Value v,lm,le) end + | (Typ_var (Kid_aux (Var "length") _))-> + match (detaint v) with + | V_vector start dir vs -> + let i = (List.length vs) - 1 in + if start = i then (Value v,lm,le) else (Value (update_vector_start dir i 1 v),lm,le) + | _ -> (Value v,lm,le) end + | _ -> (Value v,lm,le) end in + (match (tag,detaint v) with + (*Cast is telling us to read a register*) + | (Tag_extern _, V_register regform) -> + (Action (Read_reg regform Nothing) (mk_hole l (val_annot (reg_to_t regform)) t_level le lm), lm,le) + (*Cast is changing vector start position, potentially*) + | (_,v) -> conditional_update_vstart () end)) + (fun a -> update_stack a (add_to_top_frame (fun e env -> (E_aux (E_cast ctyp e) (l,annot), env)))) + | E_id id -> + let name = get_id id in + match tag with + | Tag_empty -> + match in_lenv l_env id with + | V_boxref n t -> (Value (in_mem l_mem n),l_mem,l_env) + | value -> (Value value,l_mem,l_env) end + | Tag_global -> + match in_env lets name with + | Just(value) -> (Value value, l_mem,l_env) + | Nothing -> + (match in_env regs name with + | Just(value) -> (Value value, l_mem,l_env) + | Nothing -> (Error l ("Internal error: " ^ name ^ " unbound on Tag_global"),l_mem,l_env) end) end + | Tag_enum _ -> + match in_env lets name with + | Just(value) -> (Value value,l_mem,l_env) + | Nothing -> (Error l ("Internal error: " ^ name ^ " unbound on Tag_enum "), l_mem,l_env) + end + | Tag_extern _ -> (* update with id here when it's never just "register" *) + let regf = match in_lenv l_env id with (* Check for local treatment of a register as a value *) + | V_register regform -> regform + | _ -> + match in_env regs name with (* Register isn't a local value, so pull from global environment *) + | Just(V_register regform) -> regform + | _ -> Form_Reg id annot default_dir end end in + (Action (Read_reg regf Nothing) (mk_hole l annot t_level l_env l_mem), l_mem, l_env) + | Tag_alias -> + match in_env aliases name with + | Just aspec -> interp_alias_read mode t_level l_env l_mem aspec + | _ -> (Error l ("Internal error: alias not found"), l_mem,l_env) end + | _ -> + (Error l + ("Internal error: tag " ^ (string_of_tag tag) ^ " expected empty,enum,alias,or extern for " ^ name), + l_mem,l_env) + end + | E_if cond thn els -> + resolve_outcome + (interp_main mode t_level l_env l_mem cond) + (fun value_whole lm le -> + let value = detaint value_whole in + match (value,mode.eager_eval) with + (*TODO remove booleans here when fully removed elsewhere *) + | (V_lit(L_aux L_one _),true) -> interp_main mode t_level l_env lm thn + | (V_lit(L_aux L_one _),false) -> debug_out Nothing Nothing thn t_level lm l_env + | (V_vector _ _ [(V_lit(L_aux L_one _))],true) -> interp_main mode t_level l_env lm thn + | (V_vector _ _ [(V_lit(L_aux L_one _))],false) -> debug_out Nothing Nothing thn t_level lm l_env + | (V_unknown,_) -> + let (branches,maybe_id) = fix_up_nondet typ [thn;els] (l,annot) in + interp_main mode t_level l_env lm (E_aux (E_nondet branches) (l,non_det_annot annot maybe_id)) + | (_,true) -> interp_main mode t_level l_env lm els + | (_,false) -> debug_out Nothing Nothing els t_level lm l_env end) + (fun a -> update_stack a (add_to_top_frame (fun c env -> (E_aux (E_if c thn els) (l,annot), env)))) + | E_for id from to_ by ((Ord_aux o _) as order) exp -> + let is_inc = match o with | Ord_inc -> true | _ -> false end in + resolve_outcome + (interp_main mode t_level l_env l_mem from) + (fun from_val_whole lm le -> + let from_val = detaint from_val_whole in + let (from_e,env) = to_exp mode le from_val_whole in + match from_val with + | V_lit(L_aux(L_num from_num) fl) -> + resolve_outcome + (interp_main mode t_level env lm to_) + (fun to_val_whole lm le -> + let to_val = detaint to_val_whole in + let (to_e,env) = to_exp mode le to_val_whole in + match to_val with + | V_lit(L_aux (L_num to_num) tl) -> + resolve_outcome + (interp_main mode t_level env lm by) + (fun by_val_whole lm le -> + let by_val = detaint by_val_whole in + let (by_e,env) = to_exp mode le by_val_whole in + match by_val with + | V_lit (L_aux (L_num by_num) bl) -> + if ((is_inc && (from_num > to_num)) || (not(is_inc) && (from_num < to_num))) + then (Value(V_lit (L_aux L_unit l)),lm,le) + else + let (ftyp,ttyp,btyp) = (val_typ from_val,val_typ to_val,val_typ by_val) in + let augment_annot = (fl, val_annot (combine_typs [ftyp;ttyp])) in + let diff = L_aux (L_num (if is_inc then from_num+by_num else from_num - by_num)) fl in + let (augment_e,env) = match (from_val_whole,by_val_whole) with + | (V_lit _, V_lit _) -> ((E_aux (E_lit diff) augment_annot), env) + | (V_track _ rs, V_lit _) -> to_exp mode env (taint (V_lit diff) rs) + | (V_lit _, V_track _ rs) -> to_exp mode env (taint (V_lit diff) rs) + | (V_track _ r1, V_track _ r2) -> + (to_exp mode env (taint (V_lit diff) (r1 union r2))) + | _ -> Assert_extra.failwith "For loop from and by values not range" end in + let e = + (E_aux + (E_block + [(E_aux + (E_let + (LB_aux (LB_val (P_aux (P_id id) (fl,val_annot ftyp)) from_e) + (Unknown,val_annot ftyp)) + exp) (l,annot)); + (E_aux (E_for id augment_e to_e by_e order exp) (l,annot))]) + (l,annot)) in + if mode.eager_eval + then interp_main mode t_level env lm e + else debug_out Nothing Nothing e t_level lm env + | V_unknown -> + let e = + (E_aux + (E_let + (LB_aux + (LB_val (P_aux (P_id id) (fl, val_annot (val_typ from_val))) from_e) + (fl, val_annot (val_typ from_val))) + exp) (l,annot)) in + interp_main mode t_level env lm e + | _ -> (Error l "internal error: by must be a number",lm,le) end) + (fun a -> update_stack a + (add_to_top_frame (fun b env -> (E_aux (E_for id from_e to_e b order exp) (l,annot), env)))) + | V_unknown -> + let e = + (E_aux + (E_let (LB_aux + (LB_val (P_aux (P_id id) (fl, val_annot (val_typ from_val))) from_e) + (fl, val_annot (val_typ from_val))) exp) (l,annot)) in + interp_main mode t_level env lm e + | _ -> (Error l "internal error: to must be a number",lm,env) end) + (fun a -> update_stack a + (add_to_top_frame (fun t env -> + (E_aux (E_for id from_e t by order exp) (l,annot), env)))) + | V_unknown -> + let e = + (E_aux + (E_let (LB_aux (LB_val (P_aux (P_id id) (Unknown, val_annot (val_typ from_val))) from_e) + (Unknown, val_annot (val_typ from_val))) exp) (l,annot)) in + interp_main mode t_level env lm e + | _ -> (Error l "internal error: from must be a number",lm,le) end) + (fun a -> update_stack a + (add_to_top_frame (fun f env -> (E_aux (E_for id f to_ by order exp) (l,annot), env)))) + | E_case exp pats -> + resolve_outcome + (interp_main mode t_level l_env l_mem exp) + (fun v lm le -> + match find_case t_level pats v with + | [] -> (Error l ("No matching patterns in case for value " ^ (string_of_value v)),lm,le) + | [(env,_,exp)] -> + if mode.eager_eval + then interp_main mode t_level (union_env env l_env) lm exp + else debug_out Nothing Nothing exp t_level lm (union_env env l_env) + | multi_matches -> + let (lets,taint_env) = + List.foldr (fun (env,_,exp) (rst,taint_env) -> + let (e,t_e) = env_to_let mode env exp taint_env in (e::rst,t_e)) ([],l_env) multi_matches in + let (branches,maybe_id) = fix_up_nondet typ lets (l,annot) in + interp_main mode t_level taint_env lm (E_aux (E_nondet branches) (l,(non_det_annot annot maybe_id))) + end) + (fun a -> update_stack a (add_to_top_frame (fun e env -> (E_aux (E_case e pats) (l,annot), env)))) + | E_record(FES_aux (FES_Fexps fexps _) fes_annot) -> + let (fields,exps) = List.unzip (List.map (fun (FE_aux (FE_Fexp id exp) _) -> (id,exp)) fexps) in + exp_list mode t_level + (fun es env' -> + ((E_aux + (E_record + (FES_aux (FES_Fexps + (map2 (fun id exp -> (FE_aux (FE_Fexp id exp) (Unknown,Nothing))) fields es) + false) fes_annot)) + (l,annot)), env')) + (fun vs -> (V_record typ (List.zip fields vs))) l_env l_mem [] exps + | E_record_update exp (FES_aux (FES_Fexps fexps _) fes_annot) -> + resolve_outcome + (interp_main mode t_level l_env l_mem exp) + (fun rv lm le -> match rv with + | V_record t fvs -> + let (fields,exps) = List.unzip (List.map (fun (FE_aux (FE_Fexp id exp) _) -> (id,exp)) fexps) in + resolve_outcome + (exp_list mode t_level + (fun es env'-> + let (e,env'') = (to_exp mode env' rv) in + ((E_aux (E_record_update e + (FES_aux (FES_Fexps + (map2 (fun id exp -> (FE_aux (FE_Fexp id exp) (Unknown,Nothing))) + fields es) false) fes_annot)) + (l,annot)), env'')) + (fun vs -> (V_record t (List.zip fields vs))) l_env l_mem [] exps) + (fun vs lm le -> (Value (fupdate_record rv vs), lm, le)) + (fun a -> a) (*Due to exp_list this won't happen, but we want to functionaly update on Value *) + | V_unknown -> (Value V_unknown, lm, le) + | _ -> (Error l "internal error: record update requires record",lm,le) end) + (fun a -> update_stack a + (add_to_top_frame + (fun e env -> (E_aux(E_record_update e (FES_aux(FES_Fexps fexps false) fes_annot)) (l,annot), env)))) + | E_list(exps) -> + exp_list mode t_level (fun exps env' -> (E_aux (E_list exps) (l,annot),env')) V_list l_env l_mem [] exps + | E_cons hd tl -> + resolve_outcome + (interp_main mode t_level l_env l_mem hd) + (fun hdv lm le -> + resolve_outcome + (interp_main mode t_level l_env lm tl) + (fun tlv lm le -> match detaint tlv with + | V_list t -> (Value (retaint tlv (V_list (hdv::t))),lm,le) + | V_unknown -> (Value (retaint tlv V_unknown),lm,le) + | _ -> (Error l ("Internal error '::' of non-list value " ^ (string_of_value tlv)),lm,le) end) + (fun a -> update_stack a + (add_to_top_frame + (fun t env -> let (hde,env') = to_exp mode env hdv in (E_aux (E_cons hde t) (l,annot),env'))))) + (fun a -> update_stack a (add_to_top_frame (fun h env -> (E_aux (E_cons h tl) (l,annot), env)))) + | E_field exp id -> + resolve_outcome + (interp_main mode t_level l_env l_mem exp) + (fun value_whole lm le -> + match detaint value_whole with + | V_record t fexps -> + (match in_env (env_from_list fexps) (get_id id) with + | Just v -> (Value (retaint value_whole v),lm,l_env) + | Nothing -> (Error l "Internal_error: Field not found in record",lm,le) end) + | V_register ((Form_Reg _ annot _) as reg_form) -> + let id' = match annot with + | Just((Typ_aux (Typ_id (Id_aux (Id id') _)) _),_,_,_,_) -> id' + | _ -> Assert_extra.failwith "annotation not well formed for field access" + end in + (match in_env subregs id' with + | Just(indexes) -> + (match in_env indexes (get_id id) with + | Just ir -> + let sub_reg = Form_SubReg id reg_form ir in + (Action (Read_reg sub_reg Nothing) + (mk_hole l (val_annot (reg_to_t sub_reg)) t_level le lm),lm,le) + | _ -> (Error l "Internal error: unrecognized read, no id",lm,le) end) + | Nothing -> (Error l "Internal error: subregs indexes not found", lm, le) end) + | V_unknown -> (Value (retaint value_whole V_unknown),lm,l_env) + | _ -> + (Error l ("Internal error: neither register nor record at field access " + ^ (string_of_value value_whole)),lm,le) end) + (fun a -> + match (exp,a) with + | (E_aux _ (l,Just(_,Tag_extern _,_,_,_)), + (Action (Read_reg ((Form_Reg _ (Just((Typ_aux (Typ_id (Id_aux (Id id') _)) _),_,_,_,_)) _) as regf) Nothing) s)) -> + match in_env subregs id' with + | Just(indexes) -> + (match in_env indexes (get_id id) with + | Just ir -> + (Action (Read_reg (Form_SubReg id regf ir) Nothing) s) + | _ -> Error l "Internal error, unrecognized read, no id" + end) + | Nothing -> Error l "Internal error, unrecognized read, no reg" end + | _ -> update_stack a (add_to_top_frame (fun e env -> (E_aux(E_field e id) (l,annot),env))) end) + | E_vector_access vec i -> + resolve_outcome + (interp_main mode t_level l_env l_mem vec) + (fun vvec lm le -> + resolve_outcome + (interp_main mode t_level l_env lm i) + (fun iv lm le -> + (match detaint iv with + | V_unknown -> (Value iv,lm,le) + | V_lit (L_aux (L_num n) ln) -> + let n = natFromInteger n in + let v_access vvec num = + (match (detaint vvec, detaint num) with + | (V_vector _ _ _,V_lit _) -> Value (access_vector vvec n) + | (V_vector_sparse _ _ _ _ _,V_lit _) -> Value (access_vector vvec n) + | (V_register reg, V_lit _) -> + Action (Read_reg reg (Just (n,n))) (mk_hole l annot t_level l_env lm) + | (V_unknown,_) -> Value V_unknown + | _ -> Assert_extra.failwith + ("Vector access error: " ^ (string_of_value vvec) ^ "[" ^ (show n) ^ "]") + end) + in + (v_access (retaint iv vvec) iv,lm,le) + | _ -> (Error l "Vector access not given a number for index",lm,l_env) + end)) + (fun a -> update_stack a (add_to_top_frame(fun i' env -> + let (vec_e, env') = to_exp mode env vvec in + (E_aux (E_vector_access vec_e i') (l,annot), env'))))) + (fun a -> + update_stack a (add_to_top_frame (fun vec' env -> + (E_aux (E_vector_access vec' i) (l,annot), env)))) + | E_vector_subrange vec i1 i2 -> + resolve_outcome + (interp_main mode t_level l_env l_mem vec) + (fun vvec lm le -> + resolve_outcome + (interp_main mode t_level l_env lm i1) + (fun i1v lm le -> + resolve_outcome + (interp_main mode t_level l_env lm i2) + (fun i2v lm le -> + match detaint i1v with + | V_unknown -> (Value i1v,lm,le) + | V_lit (L_aux (L_num n1) nl1) -> + match detaint i2v with + | V_unknown -> (Value i2v,lm,le) + | V_lit (L_aux (L_num n2) nl2) -> + let slice = binary_taint (fun v1 v2 -> V_tuple[v1;v2]) i1v i2v in + let take_slice vvec = + let (n1,n2) = (natFromInteger n1,natFromInteger n2) in + (match detaint vvec with + | V_vector _ _ _ -> Value (slice_vector vvec n1 n2) + | V_vector_sparse _ _ _ _ _ -> Value (slice_vector vvec n1 n2) + | V_unknown -> + let inc = n1 < n2 in + Value (retaint vvec (V_vector n1 (if inc then IInc else IDec) + (List.replicate ((if inc then n1-n2 else n2-n1)+1) V_unknown))) + | V_register reg -> + Action (Read_reg reg (Just (n1,n2))) (mk_hole l annot t_level le lm) + | _ -> (Error l ("Vector slice of non-vector " ^ (string_of_value vvec))) end) in + ((take_slice (retaint slice vvec)), lm,le) + | _ -> (Error l "vector subrange did not receive a range value", l_mem, l_env) + end + | _ -> (Error l "vector subrange did not receive a range value", l_mem, l_env) + end) + (fun a -> update_stack a (add_to_top_frame (fun i2' env -> + let (vec_e, env') = to_exp mode env vvec in + let (i1_e, env'') = to_exp mode env' i1v in + (E_aux (E_vector_subrange vec_e i1_e i2') (l,annot), env''))))) + (fun a -> + update_stack a (add_to_top_frame (fun i1' env -> + let (vec_e, env') = to_exp mode env vvec in + (E_aux (E_vector_subrange vec_e i1' i2) (l,annot), env'))))) + (fun a -> + update_stack a (add_to_top_frame (fun vec' env -> + (E_aux (E_vector_subrange vec' i1 i2) (l,annot), env)))) + | E_vector_update vec i exp -> + resolve_outcome + (interp_main mode t_level l_env l_mem vec) + (fun vvec lm le -> + resolve_outcome + (interp_main mode t_level l_env lm i) + (fun vi lm le -> + resolve_outcome + (interp_main mode t_level l_env lm exp) + (fun vup lm le -> + (match (detaint vi) with + | V_lit (L_aux (L_num n1) ln1) -> + let fvup vi vvec = + (match vvec with + | V_vector _ _ _ -> fupdate_vec vvec (natFromInteger n1) vup + | V_vector_sparse _ _ _ _ _ -> fupdate_vec vvec (natFromInteger n1) vup + | V_unknown -> V_unknown + | _ -> Assert_extra.failwith "Update of vector given non-vector" + end) + in + (Value (binary_taint fvup vi vvec),lm,le) + | V_unknown -> (Value vi,lm,le) + | _ -> Assert_extra.failwith "Update of vector requires number for access" + end)) + (fun a -> update_stack a (add_to_top_frame (fun exp' env -> + let (vec_e, env') = to_exp mode env vvec in + let (i_e, env'') = to_exp mode env' vi in + (E_aux (E_vector_update vec_e i_e exp') (l,annot), env''))))) + (fun a -> update_stack a (add_to_top_frame (fun i' env -> + let (vec_e, env') = to_exp mode env vvec in + (E_aux (E_vector_update vec_e i' exp) (l,annot), env'))))) + (fun a -> update_stack a (add_to_top_frame (fun vec' env -> + (E_aux (E_vector_update vec' i exp) (l,annot), env)))) + | E_vector_update_subrange vec i1 i2 exp -> + resolve_outcome + (interp_main mode t_level l_env l_mem vec) + (fun vvec lm le -> + resolve_outcome + (interp_main mode t_level l_env lm i1) + (fun vi1 lm le -> + resolve_outcome + (interp_main mode t_level l_env lm i2) + (fun vi2 lm le -> + resolve_outcome + (interp_main mode t_level l_env lm exp) + (fun v_rep lm le -> + (match detaint vi1 with + | V_unknown -> (Value vi1,lm,le) + | V_lit (L_aux (L_num n1) ln1) -> + (match detaint vi2 with + | V_unknown -> (Value vi2,lm,le) + | V_lit (L_aux (L_num n2) ln2) -> + let slice = binary_taint (fun v1 v2 -> V_tuple[v1;v2]) vi1 vi2 in + let fup_v_slice v1 vvec = + (match vvec with + | V_vector _ _ _ -> + fupdate_vector_slice vvec v_rep (natFromInteger n1) (natFromInteger n2) + | V_vector_sparse _ _ _ _ _ -> + fupdate_vector_slice vvec v_rep (natFromInteger n1) (natFromInteger n2) + | V_unknown -> V_unknown + | _ -> Assert_extra.failwith "Vector update requires vector" + end) in + (Value (binary_taint fup_v_slice slice vvec),lm,le) + | _ -> Assert_extra.failwith "vector update requires number" + end) + | _ -> Assert_extra.failwith "vector update requires number" + end)) + (fun a -> update_stack a (add_to_top_frame (fun exp' env -> + let (vec_e, env') = to_exp mode env vvec in + let (i1_e, env'') = to_exp mode env' vi1 in + let (i2_e, env''') = to_exp mode env'' vi1 in + (E_aux (E_vector_update_subrange vec_e i1_e i2_e exp') (l,annot), env'''))))) + (fun a -> update_stack a (add_to_top_frame (fun i2' env -> + let (vec_e, env') = to_exp mode env vvec in + let (i1_e, env'') = to_exp mode env' vi1 in + (E_aux (E_vector_update_subrange vec_e i1_e i2' exp) (l,annot), env''))))) + (fun a -> update_stack a (add_to_top_frame (fun i1' env -> + let (vec_e, env') = to_exp mode env vvec in + (E_aux (E_vector_update_subrange vec_e i1' i2 exp) (l,annot), env'))))) + (fun a -> update_stack a (add_to_top_frame (fun vec' env -> + (E_aux (E_vector_update_subrange vec' i1 i2 exp) (l,annot), env)))) + | E_vector_append e1 e2 -> + resolve_outcome + (interp_main mode t_level l_env l_mem e1) + (fun v1 lm le -> + resolve_outcome + (interp_main mode t_level l_env lm e2) + (fun v2 lm le -> + (match detaint v1 with + | V_unknown -> (Value v1,lm,le) + | _ -> + let append v1 v2 = + (match (v1,v2) with + | (V_vector _ dir vals1, V_vector _ _ vals2) -> + let vals = vals1++vals2 in + let len = List.length vals in + if is_inc(dir) + then V_vector 0 dir vals + else V_vector (len-1) dir vals + | (V_vector m dir vals1, V_vector_sparse _ len _ vals2 d) -> + let original_len = List.length vals1 in + let (_,sparse_vals) = List.foldr (fun v (i,vals) -> (i+1,(i,v)::vals)) (m,[]) vals1 in + let sparse_update = List.map (fun (i,v) -> (i+m+original_len,v)) vals2 in + V_vector_sparse m (len+original_len) dir (sparse_vals ++ sparse_update) d + | (V_vector_sparse m len dir vals1 d, V_vector _ _ vals2) -> + let new_len = List.length vals2 in + let (_,sparse_vals) = List.foldr (fun v (i,vals) -> (i+1,(i,v)::vals)) (len,[]) vals2 in + V_vector_sparse m (len+new_len) dir (vals1++sparse_vals) d + | (V_vector_sparse m len dir vals1 d, V_vector_sparse _ new_len _ vals2 _) -> + let sparse_update = List.map (fun (i,v) -> (i+len,v)) vals2 in + V_vector_sparse m (len+new_len) dir (vals1 ++ sparse_update) d + | (V_unknown,_) -> V_unknown (*update to get length from type*) + | (_,V_unknown) -> V_unknown (*see above*) + | _ -> Assert_extra.failwith ("vector concat requires two vectors but given " + ^ (string_of_value v1) ^ " " ^ (string_of_value v2)) + end) + in + (Value (binary_taint append v1 v2),lm,le) + end)) + (fun a -> update_stack a (add_to_top_frame (fun e2' env -> + let (e1_e, env') = to_exp mode env v1 in + (E_aux (E_vector_append e1_e e2') (l,annot), env'))))) + (fun a -> update_stack a (add_to_top_frame (fun e1' env -> + (E_aux (E_vector_append e1' e2) (l,annot), env)))) + | E_tuple(exps) -> + exp_list mode t_level (fun exps env' -> (E_aux (E_tuple exps) (l,annot), env')) V_tuple l_env l_mem [] exps + | E_vector(exps) -> + let (is_inc,dir) = (match typ with + | Typ_aux (Typ_app (Id_aux (Id "vector") _) [ _; _; Typ_arg_aux (Typ_arg_order (Ord_aux Ord_inc _)) _; _]) _ -> (true,IInc) + | _ -> (false,IDec) end) in + let base = (if is_inc then 0 else (List.length exps) - 1) in + exp_list mode t_level + (fun exps env' -> (E_aux (E_vector exps) (l,annot),env')) + (fun vals -> V_vector base dir vals) l_env l_mem [] exps + | E_block exps -> interp_block mode t_level l_env l_env l_mem l annot exps + | E_nondet exps -> + (Action (Nondet exps tag) + (match tag with + | Tag_unknown (Just id) -> mk_hole l annot t_level l_env l_mem + | _ -> mk_thunk l annot t_level l_env l_mem end), + l_mem, l_env) + | E_app f args -> + (match (exp_list mode t_level + (fun es env -> (E_aux (E_app f es) (l,annot),env)) + (fun vs -> match vs with | [] -> V_lit (L_aux L_unit l) | [v] -> v | vs -> V_tuple vs end) + l_env l_mem [] args) with + | (Value v,lm,le) -> + let name = get_id f in + (match tag with + | Tag_global -> + (match Map.lookup name fdefs with + | Just(funcls) -> + (match find_funcl t_level funcls v with + | [] -> + (Error l ("No matching pattern for function " ^ name ^ + " on value " ^ (string_of_value v)),l_mem,l_env) + | [(env,_,exp)] -> + resolve_outcome + (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just v) exp t_level (emem name) env)) + (fun ret lm le -> (Value ret, l_mem,l_env)) + (fun a -> update_stack a + (fun stack -> (Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) + t_level l_env l_mem stack))) + | multi_matches -> + let (lets,taint_env) = + List.foldr (fun (env,_,exp) (rst,taint_env) -> + let (e,t_e) = env_to_let mode env exp taint_env in (e::rst,t_e)) ([],l_env) multi_matches in + let (branches,maybe_id) = fix_up_nondet typ lets (l,annot) in + let exp = E_aux (E_nondet branches) (l,(non_det_annot annot maybe_id)) in + interp_main mode t_level taint_env lm exp + end) + | Nothing -> + (Error l ("Internal error: function with tag global unfound " ^ name),lm,le) end) + | Tag_empty -> + (match Map.lookup name fdefs with + | Just(funcls) -> + (match find_funcl t_level funcls v with + | [] -> + (Error l ("No matching pattern for function " ^ name ^ " on value " ^ (string_of_value v)),l_mem,l_env) + | [(env,used_unknown,exp)] -> + resolve_outcome + (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just v) exp t_level (emem name) env)) + (fun ret lm le -> (Value ret, l_mem,l_env)) + (fun a -> update_stack a + (fun stack -> (Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) + t_level l_env l_mem stack))) + | _ -> (Error l ("Internal error: multiple pattern matches found for " ^ name), l_mem, l_env) + end) + | Nothing -> + (Error l ("Internal error: function with local tag unfound " ^ name),lm,le) end) + | Tag_spec -> + (match Map.lookup name fdefs with + | Just(funcls) -> + (match find_funcl t_level funcls v with + | [] -> + (Error l ("No matching pattern for function " ^ name ^ " on value " ^ (string_of_value v)),l_mem,l_env) + | [(env,used_unknown,exp)] -> + resolve_outcome + (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just v) exp t_level (emem name) env)) + (fun ret lm le -> (Value ret, l_mem,l_env)) + (fun a -> update_stack a + (fun stack -> + (Hole_frame redex_id + (E_aux (E_id redex_id) (l,(intern_annot annot))) t_level l_env l_mem stack))) + | _ -> (Error l ("Internal error: multiple pattern matches for " ^ name), l_mem, l_env) + end) + | Nothing -> + (Error l (String.stringAppend "Specified function must be defined before executing " name),lm,le) end) + | Tag_ctor -> + (match Map.lookup name ctors with + | Just(_) -> (Value (V_ctor f typ C_Union v), lm, le) + | Nothing -> (Error l (String.stringAppend "Internal error: function with ctor tag unfound " name),lm,le) + end) + | Tag_extern opt_name -> + let effects = (match effect with | Effect_aux(Effect_set es) _ -> es | _ -> [] end) in + let name_ext = match opt_name with | Just s -> s | Nothing -> name end in + let mk_hole_frame act = (Action act (mk_hole l annot t_level le lm), lm, le) in + let mk_thunk_frame act = (Action act (mk_thunk l annot t_level le lm), lm, le) in + if has_rmem_effect effects + then mk_hole_frame (Read_mem (id_of_string name_ext) v Nothing) + else if has_rmemt_effect effects + then mk_hole_frame (Read_mem_tagged (id_of_string name_ext) v Nothing) + else if has_barr_effect effects + then mk_thunk_frame (Barrier (id_of_string name_ext) v) + else if has_depend_effect effects + then mk_thunk_frame (Footprint (id_of_string name_ext) v) + else if has_wmem_effect effects + then let (wv,v) = + match v with + | V_tuple [p;v] -> (v,p) + | V_tuple params_list -> + let reved = List.reverse params_list in + (List_extra.head reved,V_tuple (List.reverse (List_extra.tail reved))) + | _ -> Assert_extra.failwith ("Expected tuple found " ^ (string_of_value v)) end in + mk_hole_frame (Write_mem (id_of_string name_ext) v Nothing wv) + else if has_eamem_effect effects + then mk_thunk_frame (Write_ea (id_of_string name_ext) v) + else if has_exmem_effect effects + then mk_hole_frame (Excl_res (id_of_string name_ext)) + else if has_wmv_effect effects + then let (wv,v) = + match v with + | V_tuple [p;v] -> (v,p) + | V_tuple params_list -> + let reved= List.reverse params_list in + (List_extra.head reved,V_tuple (List.reverse (List_extra.tail reved))) + | _ -> (v,unitv) end in + mk_hole_frame (Write_memv (id_of_string name_ext) v wv) + else if has_wmvt_effect effects + then match v with + | V_tuple [addr; size; tag; data] -> + mk_hole_frame (Write_memv_tagged (id_of_string name_ext) (V_tuple([addr; size])) tag data) + | _ -> Assert_extra.failwith("wmvt: expected tuple of four elements") end + else mk_hole_frame (Call_extern name_ext v) + | _ -> + (Error l (String.stringAppend "Tag not empty, spec, ctor, or extern on function call " name),lm,le) end) + | out -> out end) + | E_app_infix lft op r -> + let op = match op with + | Id_aux (Id x) il -> Id_aux (DeIid x) il + | _ -> op + end in + let name = get_id op in + resolve_outcome + (interp_main mode t_level l_env l_mem lft) + (fun lv lm le -> + resolve_outcome + (interp_main mode t_level l_env lm r) + (fun rv lm le -> + match tag with + | Tag_global -> + (match Map.lookup name fdefs with + | Nothing -> (Error l ("Internal error: no function def for " ^ name),lm,le) + | Just (funcls) -> + (match find_funcl t_level funcls (V_tuple [lv;rv]) with + | [] -> (Error l ("No matching pattern for function " ^ name),lm,l_env) + | [(env,used_unknown,exp)] -> + resolve_outcome + (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just (V_tuple [lv;rv])) exp t_level (emem name) env)) + (fun ret lm le -> (Value ret,l_mem,l_env)) + (fun a -> update_stack a + (fun stack -> + (Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) + t_level l_env l_mem stack))) + | _ -> (Error l ("Internal error: multiple pattern matches for " ^ name),lm,le) + end)end) + | Tag_empty -> + (match Map.lookup name fdefs with + | Nothing -> (Error l ("Internal error: no function def for " ^ name),lm,le) + | Just (funcls) -> + (match find_funcl t_level funcls (V_tuple [lv;rv]) with + | [] -> (Error l ("No matching pattern for function " ^ name),lm,l_env) + | [(env,used_unknown,exp)] -> + resolve_outcome + (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just (V_tuple [lv;rv])) exp t_level (emem name) env)) + (fun ret lm le -> (Value ret,l_mem,l_env)) + (fun a -> update_stack a + (fun stack -> (Hole_frame redex_id (E_aux (E_id redex_id) (l,annot)) + t_level l_env l_mem stack))) + | _ -> (Error l ("Internal error: multiple pattern matches for " ^ name),lm,le) + end)end) + | Tag_spec -> + (match Map.lookup name fdefs with + | Nothing -> (Error l ("Internal error: No function definition found for " ^ name),lm,le) + | Just (funcls) -> + (match find_funcl t_level funcls (V_tuple [lv;rv]) with + | [] -> (Error l ("No matching pattern for function " ^ name),lm,l_env) + | [(env,used_unknown,exp)] -> + resolve_outcome + (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just (V_tuple [lv;rv])) exp t_level (emem name) env)) + (fun ret lm le -> (Value ret,l_mem,l_env)) + (fun a -> update_stack a + (fun stack -> (Hole_frame redex_id + (E_aux (E_id redex_id) (l,(intern_annot annot))) + t_level l_env l_mem stack))) + | _ -> (Error l ("Internal error: multiple pattern matches for " ^ name), lm, le) + end)end) + | Tag_extern ext_name -> + let ext_name = match ext_name with Just s -> s | Nothing -> name end in + (Action (Call_extern ext_name (V_tuple [lv;rv])) + (Hole_frame redex_id + (E_aux (E_id redex_id) (l,intern_annot annot)) t_level le lm Top),lm,le) + | _ -> (Error l "Internal error: unexpected tag for app_infix", l_mem, l_env) end) + (fun a -> update_stack a + (add_to_top_frame + (fun r env -> let (el,env') = to_exp mode env lv in (E_aux (E_app_infix el op r) (l,annot), env'))))) + (fun a -> update_stack a (add_to_top_frame (fun lft env -> (E_aux (E_app_infix lft op r) (l,annot), env)))) + | E_exit exp -> + (Action (Exit exp) (mk_thunk l annot t_level l_env l_mem),l_mem, l_env) + | E_return exp -> + resolve_outcome + (interp_main mode t_level l_env l_mem exp) + (fun v lm le -> (Action (Return v) Top, l_mem, l_env)) + (fun a -> update_stack a (add_to_top_frame (fun e env -> (E_aux (E_return e) (l,annot), env)))) + | E_assert cond msg -> + resolve_outcome + (interp_main mode t_level l_env l_mem msg) + (fun v lm le -> + resolve_outcome + (interp_main mode t_level l_env lm cond) + (fun c lm le -> + (match detaint c with + | V_lit (L_aux L_one _) -> (Value unitv,lm,l_env) + | V_lit (L_aux L_true _) -> (Value unitv,lm,l_env) + | V_lit (L_aux L_zero _) -> (Action (Fail v) (mk_thunk l annot t_level l_env l_mem), lm,le) + | V_lit (L_aux L_false _) -> (Action (Fail v) (mk_thunk l annot t_level l_env l_mem), lm,le) + | V_unknown -> + let (branches,maybe_id) = + fix_up_nondet typ [unit_e; + E_aux (E_assert (E_aux (E_lit (L_aux L_zero l)) + (l,val_annot (mk_typ_id "bit"))) msg) (l,annot)] + (l,annot) in + interp_main mode t_level l_env lm (E_aux (E_nondet branches) (l,non_det_annot annot maybe_id)) + | _ -> (Error l ("assert given unexpected " ^ (string_of_value c)),l_mem,l_env) + end)) + (fun a -> update_stack a (add_to_top_frame (fun c env -> (E_aux (E_assert c msg) (l,annot), env))))) + (fun a -> update_stack a (add_to_top_frame (fun m env -> (E_aux (E_assert cond m) (l,annot), env)))) + | E_let (lbind : letbind tannot) exp -> + match (interp_letbind mode t_level l_env l_mem lbind) with + | ((Value v,lm,le),_) -> + if mode.eager_eval + then interp_main mode t_level le lm exp + else debug_out Nothing Nothing exp t_level lm le + | (((Action a s as o),lm,le),Just lbuild) -> + ((update_stack o (add_to_top_frame (fun e env -> (E_aux (E_let (lbuild e) exp) (l,annot), env)))),lm,le) + | (e,_) -> e end + | E_assign lexp exp -> + resolve_outcome + (interp_main mode t_level l_env l_mem exp) + (fun v lm le -> + (match create_write_message_or_update mode t_level v l_env lm true lexp with + | (outcome,Nothing,_) -> outcome + | (outcome,Just lexp_builder,Nothing) -> + resolve_outcome outcome + (fun v lm le -> (Value v,lm,le)) + (fun a -> + (match a with + | (Action (Write_reg regf range value) stack) -> a + | (Action (Write_mem id a_ range value) stack) -> a + | (Action (Write_memv _ _ _) stack) -> a + | (Action (Write_memv_tagged _ _ _ _) stack) -> a + | _ -> update_stack a (add_to_top_frame + (fun e env -> + let (ev,env') = (to_exp mode env v) in + let (lexp,env') = (lexp_builder e env') in + (E_aux (E_assign lexp ev) (l,annot),env'))) end)) + | (outcome,Just lexp_builder, Just v) -> + resolve_outcome outcome + (fun v lm le -> (Value v,lm,le)) + (fun a -> update_stack a (add_to_top_frame + (fun e env -> + let (ev,env') = to_exp mode env v in + let (lexp,env') = (lexp_builder e env') in + (E_aux (E_assign lexp ev) (l,annot),env')))) + end)) + (fun a -> update_stack a (add_to_top_frame (fun v env -> (E_aux (E_assign lexp v) (l,annot), env)))) + | _ -> (Error l "Internal expression escaped to interpreter", l_mem, l_env) + end + +and interp_main mode t_level l_env l_mem exp = + let _ = debug_fun_enter mode "interp_main" [show exp] in + let retval = __interp_main (indent_mode mode) t_level l_env l_mem exp in + let _ = debug_fun_exit mode "interp_main" retval in + retval + +(*TODO shrink location information on recursive calls *) +and __interp_block mode t_level init_env local_env local_mem l tannot exps = + match exps with + | [] -> (Value (V_lit (L_aux (L_unit) Unknown)), local_mem, init_env) + | [exp] -> + if mode.eager_eval + then interp_main mode t_level local_env local_mem exp + else debug_out Nothing Nothing exp t_level local_mem local_env + | exp:: exps -> + resolve_outcome (interp_main mode t_level local_env local_mem exp) + (fun _ lm le -> + if mode.eager_eval + then interp_block mode t_level init_env le lm l tannot exps + else debug_out Nothing Nothing (E_aux (E_block exps) (l,tannot)) t_level lm le) + (fun a -> update_stack a + (add_to_top_frame (fun e env-> (E_aux (E_block(e::exps)) (l,tannot), env)))) + end + +and interp_block mode t_level init_env local_env local_mem l tannot exps = + let _ = debug_fun_enter mode "interp_block" [show exps] in + let retval = __interp_block (indent_mode mode) t_level init_env local_env local_mem l tannot exps in + let _ = debug_fun_exit mode "interp_block" retval in + retval + +and __create_write_message_or_update mode t_level value l_env l_mem is_top_level + ((LEXP_aux lexp (l,annot)):lexp tannot) + : ((outcome * lmem * lenv) * maybe ((exp tannot) -> lenv -> ((lexp tannot) * lenv)) * maybe value) = + let (Env fdefs instrs default_dir lets regs ctors subregs aliases debug) = t_level in + let (typ,tag,ncs,ef,efr) = match annot with + | Nothing -> (mk_typ_var "fresh_v", Tag_empty, [], + (Effect_aux (Effect_set []) Unknown),(Effect_aux (Effect_set []) Unknown)) + | Just(t, tag, ncs, ef,efr) -> (t,tag,ncs,ef,efr) end in + let recenter_val (Typ_aux typ _) value = match typ with + | Typ_app (Id_aux (Id "reg") _) [Typ_arg_aux (Typ_arg_typ (Typ_aux (Typ_app (Id_aux (Id "vector") _) + [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant start) _)) _; Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant size) _)) _;_;_]) _)) _] -> + update_vector_start default_dir (natFromInteger start) (natFromInteger size) value + | _ -> value end in + match lexp with + | LEXP_id id -> + let name = get_id id in + match tag with + | Tag_intro -> + match detaint (in_lenv l_env id) with + | V_unknown -> + if is_top_level then + if name = "0" then + ((Value (V_lit (L_aux L_unit l)), update_mem true l_mem 0 value, l_env), Nothing, Nothing) + else + let (LMem owner c m s) = l_mem in + let l_mem = (LMem owner (c+1) m s) in + ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem c value, + (add_to_env (id,(V_boxref c typ)) l_env)),Nothing, Nothing) + else ((Error l ("Unknown local id " ^ (get_id id)),l_mem,l_env),Nothing,Nothing) + | v -> + if is_top_level + then + if name = "0" then + ((Value (V_lit (L_aux L_unit l)), update_mem true l_mem 0 value, l_env), Nothing,Nothing) + else + ((Error l ("Writes must be to reg values given " ^ (string_of_value v)),l_mem,l_env), + Nothing, Nothing) + else ((Value v,l_mem,l_env),Just (fun e env -> (LEXP_aux(LEXP_id id) (l,annot), env)), Nothing) + end + | Tag_set -> + match detaint (in_lenv l_env id) with + | ((V_boxref n t) as v) -> + if is_top_level + then ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem n (recenter_val t value), l_env),Nothing, Nothing) + else ((Value v, l_mem, l_env),Just (fun e env -> (LEXP_aux (LEXP_id id) (l,annot), env)), Nothing) + | V_unknown -> + if is_top_level then + if name = "0" then + ((Value (V_lit (L_aux L_unit l)), update_mem true l_mem 0 value, l_env), Nothing, Nothing) + else + let (LMem owner c m s) = l_mem in + let l_mem = (LMem owner (c+1) m s) in + ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem c value, + (add_to_env (id,(V_boxref c typ)) l_env)),Nothing,Nothing) + else ((Error l ("Unknown local id " ^ (get_id id)),l_mem,l_env),Nothing, Nothing) + | v -> + if is_top_level + then + if name = "0" then + ((Value (V_lit (L_aux L_unit l)), update_mem true l_mem 0 value, l_env), Nothing, Nothing) + else + ((Error l ("Writes must be to reg values given " ^ (string_of_value v)),l_mem,l_env), + Nothing, Nothing) + else ((Value v,l_mem,l_env),Just (fun e env -> (LEXP_aux(LEXP_id id) (l,annot), env)), Nothing) + end + | Tag_empty -> + match detaint (in_lenv l_env id) with + | ((V_boxref n t) as v) -> + if is_top_level + then ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem n (recenter_val t value), l_env),Nothing, Nothing) + else ((Value v, l_mem, l_env),Just (fun e env -> (LEXP_aux (LEXP_id id) (l,annot), env)), Nothing) + | V_unknown -> + if is_top_level then + if name = "0" then + ((Value (V_lit (L_aux L_unit l)), update_mem true l_mem 0 value, l_env), Nothing, Nothing) + else + let (LMem owner c m s) = l_mem in + let l_mem = (LMem owner (c+1) m s) in + ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem c value, + (add_to_env (id,(V_boxref c typ)) l_env)),Nothing, Nothing) + else ((Error l ("Unknown local id " ^ (get_id id)),l_mem,l_env),Nothing,Nothing) + | v -> + if is_top_level + then + if name = "0" then + ((Value (V_lit (L_aux L_unit l)), update_mem true l_mem 0 value, l_env), Nothing, Nothing) + else + ((Error l ("Writes must be to reg values given " ^ (string_of_value v)),l_mem,l_env), + Nothing, Nothing) + else ((Value v,l_mem,l_env),Just (fun e env -> (LEXP_aux(LEXP_id id) (l,annot), env)), Nothing) + end + | Tag_global -> + (match in_env lets name with + | Just v -> + if is_top_level then ((Error l "Writes must be to reg or registers",l_mem,l_env),Nothing,Nothing) + else ((Value v,l_mem,l_env),Just (fun e env -> (LEXP_aux(LEXP_id id) (l,annot), env)), Nothing) + | Nothing -> + let regf = + match in_env regs name with (*pull the regform with the most specific type annotation from env *) + | Just(V_register regform) -> regform + | _ -> Assert_extra.failwith "Register not known in regenv" end in + let start_pos = reg_start_pos regf in + let reg_size = reg_size regf in + let request = + (Action (Write_reg regf Nothing + (if is_top_level then (update_vector_start default_dir start_pos reg_size value) else value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env) in + if is_top_level then (request,Nothing,Nothing) + else (request,Just (fun e env -> (LEXP_aux (LEXP_id id) (l,annot), env)), Nothing) end) + | Tag_extern _ -> + let regf = + match in_env regs name with (*pull the regform with the most specific type annotation from env *) + | Just(V_register regform) -> regform + | _ -> Assert_extra.failwith "Register not known in regenv" end in + let start_pos = reg_start_pos regf in + let reg_size = reg_size regf in + let request = + (Action (Write_reg regf Nothing + (if is_top_level then (update_vector_start default_dir start_pos reg_size value) else value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env) in + if is_top_level then (request,Nothing,Nothing) + else (request,Just (fun e env -> (LEXP_aux (LEXP_id id) (l,annot), env)),Nothing) + | Tag_alias -> + let request = + (match in_env aliases name with + | Just (AL_aux aspec (l,_)) -> + (match aspec with + | AL_subreg (RI_aux (RI_id reg) (li, ((Just((Typ_aux (Typ_id (Id_aux (Id id) _)) _),_,_,_,_)) as annot'))) subreg -> + (match in_env subregs id with + | Just indexes -> + (match in_env indexes (get_id subreg) with + | Just ir -> + (Action + (Write_reg (Form_SubReg subreg (Form_Reg reg annot' default_dir) ir) Nothing + (update_vector_start default_dir (get_first_index_range ir) + (get_index_range_size ir) value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l, intern_annot annot)) + t_level l_env l_mem Top), l_mem, l_env) + | _ -> (Error l "Internal error, alias spec has unknown field", l_mem, l_env) end) + | _ -> + (Error l ("Internal error: alias spec has unknown register type " ^ id), l_mem, l_env) end) + | AL_bit (RI_aux (RI_id reg) (_,annot')) e -> + resolve_outcome (interp_main mode t_level l_env l_mem e) + (fun v le lm -> match v with + | V_lit (L_aux (L_num i) _) -> + let i = natFromInteger i in + (Action (Write_reg (Form_Reg reg annot' default_dir) (Just (i,i)) + (update_vector_start default_dir i 1 value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l, intern_annot annot)) + t_level l_env l_mem Top), l_mem, l_env) + | _ -> (Error l "Internal error: alias bit has non number", l_mem, l_env) end) + (fun a -> a) + | AL_slice (RI_aux (RI_id reg) (_,annot')) start stop -> + resolve_outcome (interp_main mode t_level l_env l_mem start) + (fun v lm le -> + match detaint v with + | V_lit (L_aux (L_num start) _) -> + (resolve_outcome (interp_main mode t_level l_env lm stop) + (fun v le lm -> + (match detaint v with + | V_lit (L_aux (L_num stop) _) -> + let (start,stop) = (natFromInteger start,natFromInteger stop) in + let size = if start < stop then stop - start +1 else start -stop +1 in + (Action (Write_reg (Form_Reg reg annot' default_dir) (Just (start,stop)) + (update_vector_start default_dir start size value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l, intern_annot annot)) + t_level l_env l_mem Top), + l_mem, l_env) + | _ -> (Error l "Alias slice has non number",l_mem, l_env) end)) + (fun a -> a)) + | _ -> (Error l "Alias slice has non number",l_mem,l_env) end) + (fun a -> a) + | AL_concat (RI_aux (RI_id reg1) (l1,annot1)) (RI_aux (RI_id reg2) annot2) -> + let val_typ (Typ_aux t _) = match t with + | Typ_app (Id_aux (Id "register") _) [Typ_arg_aux (Typ_arg_typ t) _] -> t + | _ -> Assert_extra.failwith "alias type ill formed" end in + let (t1,t2) = match (annot1,annot2) with + | (Just (t1,_,_,_,_), (_,(Just (t2,_,_,_,_)))) -> (val_typ t1,val_typ t2) + | _ -> Assert_extra.failwith "type annotations ill formed" end in + (match (t1,t2) with + | (Typ_aux (Typ_app (Id_aux (Id "vector") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant b1) _)) _; + Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant r1) _)) _; _;_]) _, + Typ_aux (Typ_app (Id_aux (Id "vector") _) [Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant b2) _)) _; + Typ_arg_aux (Typ_arg_nexp (Nexp_aux (Nexp_constant r2) _)) _; _;_]) _) -> + (Action + (Write_reg (Form_Reg reg1 annot1 default_dir) Nothing + (slice_vector value (natFromInteger b1) (natFromInteger r1))) + (Thunk_frame + (E_aux (E_assign (LEXP_aux (LEXP_id reg2) annot2) + (fst (to_exp <| mode with track_values =false|> eenv + (slice_vector value (natFromInteger (r1+1)) (natFromInteger r2))))) + annot2) + t_level l_env l_mem Top), l_mem,l_env) + | _ -> (Error l "Internal error: alias vector types ill formed", l_mem, l_env) end) + | _ -> (Error l "Internal error: alias spec ill formed", l_mem, l_env) end) + | _ -> (Error l ("Internal error: alias not found for id " ^(get_id id)),l_mem,l_env) end) in + (request,Nothing,Nothing) + | _ -> + ((Error l ("Internal error: writing to id with tag other than extern, empty, or alias " ^ (get_id id)), + l_mem,l_env),Nothing,Nothing) + end + | LEXP_memory id exps -> + match (exp_list mode t_level (fun exps env -> (E_aux (E_tuple exps) (Unknown,Nothing),env)) + (fun vs -> + match vs with | [] -> V_lit (L_aux L_unit Unknown) | [v] -> v | vs -> V_tuple vs end) + l_env l_mem [] exps) with + | (Value v,lm,le) -> + (match tag with + | Tag_extern _ -> + let request = + let effects = (match ef with | Effect_aux(Effect_set es) _ -> es | _ -> [] end) in + let act = if has_wmem_effect effects then (Write_mem id v Nothing value) + else if has_wmv_effect effects then (Write_memv id v value) + else Assert_extra.failwith "LEXP_memory with neither wmem or wmv event" in + (Action act + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,intern_annot annot)) t_level l_env lm Top), + lm,l_env) in + if is_top_level then (request,Nothing,Nothing) + else + (request, + Just (fun e env-> + let (parms,env) = (to_exps mode env (match v with | V_tuple vs -> vs | v -> [v] end)) in + (LEXP_aux (LEXP_memory id parms) (l,annot), env)), Nothing) + | Tag_global -> + let name = get_id id in + (match Map.lookup name fdefs with + | Just(funcls) -> + let new_vals = match v with + | V_tuple vs -> V_tuple (vs ++ [value]) + | V_lit (L_aux L_unit _) -> V_tuple [v;value] (*hmmm may be wrong in some code*) + | v -> V_tuple [v;value] end in + (match find_funcl t_level funcls new_vals with + | [] -> ((Error l ("No matching pattern for function " ^ name ^ + " on value " ^ (string_of_value new_vals)),l_mem,l_env),Nothing, Nothing) + | [(env,used_unknown,exp)] -> + (match (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just new_vals) exp t_level (emem name) env)) with + | (Value ret, _,_) -> ((Value ret, l_mem,l_env),Nothing, Nothing) + | (Action action stack,lm,le) -> + (((update_stack (Action action stack) + (fun stack -> (Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) + t_level l_env l_mem stack))), l_mem,l_env), Nothing, Nothing) + | (e,lm,le) -> ((e,lm,le),Nothing,Nothing) end) + | multi_matches -> + let (lets,taint_env) = + List.foldr (fun (env,_,exp) (rst,taint_env) -> + let (e,t_e) = env_to_let mode env exp taint_env in (e::rst,t_e)) ([],l_env) multi_matches in + let (branches,maybe_id) = fix_up_nondet typ lets (l,annot) in + (interp_main mode t_level taint_env lm (E_aux (E_nondet branches) + (l,non_det_annot annot maybe_id)), + Nothing, Nothing) + end) + | Nothing -> + ((Error l ("Internal error: function unfound " ^ name),lm,le),Nothing,Nothing) end) + | Tag_spec -> + let name = get_id id in + (match Map.lookup name fdefs with + | Just(funcls) -> + let new_vals = match v with + | V_tuple vs -> V_tuple (vs ++ [value]) + | V_lit (L_aux L_unit _) -> V_tuple [v;value] (*hmmm may be wrong in some code*) + | v -> V_tuple [v;value] end in + (match find_funcl t_level funcls new_vals with + | [] -> ((Error l ("No matching pattern for function " ^ name ^ + " on value " ^ (string_of_value new_vals)),l_mem,l_env),Nothing,Nothing) + | [(env,used_unknown,exp)] -> + (match (if mode.eager_eval + then (interp_main mode t_level env (emem name) exp) + else (debug_out (Just name) (Just new_vals) exp t_level (emem name) env)) with + | (Value ret, _,_) -> ((Value ret, l_mem,l_env),Nothing,Nothing) + | (Action action stack,lm,le) -> + (((update_stack (Action action stack) + (fun stack -> (Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) + t_level l_env l_mem stack))), l_mem,l_env), Nothing, Nothing) + | (e,lm,le) -> ((e,lm,le),Nothing,Nothing) end) + | multi_matches -> + let (lets,taint_env) = + List.foldr (fun (env,_,exp) (rst,taint_env) -> + let (e,t_e) = env_to_let mode env exp taint_env in (e::rst,t_e)) ([],l_env) multi_matches in + let (branches,maybe_id) = fix_up_nondet typ lets (l,annot) in + (interp_main mode t_level taint_env lm (E_aux (E_nondet branches) + (l,non_det_annot annot maybe_id)), + Nothing,Nothing) + end) + | Nothing -> + ((Error l ("Internal error: function unfound " ^ name),lm,le),Nothing,Nothing) end) + | _ -> ((Error l "Internal error: unexpected tag for memory or register write", lm,le),Nothing,Nothing) + end) + | (Action a s,lm, le) -> + ((Action a s,lm,le), + Just (fun (E_aux e _) env -> + (match e with | E_tuple es -> (LEXP_aux (LEXP_memory id es) (l,annot), env) + | _ -> Assert_extra.failwith "Lexp builder not well formed" end)), Nothing) + | e -> (e,Nothing,Nothing) end + | LEXP_cast typc id -> + let name = get_id id in + match tag with + | Tag_intro -> + match detaint (in_lenv l_env id) with + | V_unknown -> + if is_top_level + then begin + let (LMem owner c m s) = l_mem in + let l_mem = (LMem owner (c+1) m s) in + ((Value (V_lit (L_aux L_unit l)), update_mem mode.track_lmem l_mem c value, + (add_to_env (id,(V_boxref c typ)) l_env)),Nothing, Nothing) + end + else ((Error l ("LEXP:cast1: Undefined id " ^ (get_id id)),l_mem,l_env),Nothing, Nothing) + | v -> + if is_top_level then ((Error l "Writes must be to reg values",l_mem,l_env),Nothing, Nothing) + else ((Value v,l_mem,l_env),Just (fun e env -> (LEXP_aux(LEXP_cast typc id) (l,annot), env)), Nothing) + end + | Tag_set -> + match detaint (in_lenv l_env id) with + | ((V_boxref n t) as v) -> + if is_top_level + then ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem n (recenter_val t value), l_env),Nothing,Nothing) + else ((Value v, l_mem, l_env), + Just (fun e env -> (LEXP_aux (LEXP_cast typc id) (l,annot), env)), Nothing) + | V_unknown -> + if is_top_level + then begin + let (LMem owner c m s) = l_mem in + let l_mem = (LMem owner (c+1) m s) in + ((Value (V_lit (L_aux L_unit l)), update_mem mode.track_lmem l_mem c value, + (add_to_env (id,(V_boxref c typ)) l_env)),Nothing,Nothing) + end + else ((Error l ("LEXP:cast2: Undefined id " ^ (get_id id)),l_mem,l_env),Nothing,Nothing) + | v -> + if is_top_level then ((Error l "Writes must be to reg values",l_mem,l_env),Nothing,Nothing) + else ((Value v,l_mem,l_env), + Just (fun e env -> (LEXP_aux(LEXP_cast typc id) (l,annot), env)),Nothing) + end + | Tag_empty -> + match detaint (in_lenv l_env id) with + | ((V_boxref n t) as v) -> + if is_top_level + then ((Value (V_lit (L_aux L_unit l)), + update_mem mode.track_lmem l_mem n (recenter_val t value), l_env),Nothing,Nothing) + else ((Value v, l_mem, l_env), + Just (fun e env -> (LEXP_aux (LEXP_cast typc id) (l,annot), env)), Nothing) + | V_unknown -> + if is_top_level + then begin + let (LMem owner c m s) = l_mem in + let l_mem = (LMem owner (c+1) m s) in + ((Value (V_lit (L_aux L_unit l)), update_mem mode.track_lmem l_mem c value, + (add_to_env (id,(V_boxref c typ)) l_env)),Nothing,Nothing) + end + else ((Error l ("LEXP:cast3: Undefined id " ^ (get_id id)),l_mem,l_env),Nothing,Nothing) + | v -> + if is_top_level then ((Error l "Writes must be to reg values",l_mem,l_env),Nothing,Nothing) + else ((Value v,l_mem,l_env),Just (fun e env -> (LEXP_aux(LEXP_cast typc id) (l,annot), env)),Nothing) + end + | Tag_extern _ -> + let regf = + match in_env regs name with (*pull the regform with the most specific type annotation from env *) + | Just(V_register regform) -> regform + | _ -> Assert_extra.failwith "Register not known in regenv" end in + let start_pos = reg_start_pos regf in + let reg_size = reg_size regf in + let request = + (Action (Write_reg regf Nothing + (if is_top_level + then (update_vector_start default_dir start_pos reg_size value) + else value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env) in + if is_top_level then (request,Nothing,Nothing) + else (request,Just (fun e env -> (LEXP_aux (LEXP_cast typc id) (l,annot), env)),Nothing) + | _ -> + ((Error l ("Internal error: writing to id not extern or empty " ^(get_id id)),l_mem,l_env), + Nothing,Nothing) + end + | LEXP_tup ltups -> + match (ltups,value) with + | ([],_) -> + ((Error l "Internal error: found an empty tuple of assignments as an lexp", l_mem, l_env), Nothing,Nothing) + | ([le],V_tuple[v]) -> create_write_message_or_update mode t_level v l_env l_mem true le + | (le::ltups,V_tuple (v::vs)) -> + let new_v = V_tuple vs in + (match (create_write_message_or_update mode t_level v l_env l_mem true le) with + | ((Value v_whole,lm,le),Nothing,Nothing) -> + create_write_message_or_update mode t_level new_v le lm true (LEXP_aux (LEXP_tup ltups) (l,annot)) + | ((Action act stack,lm,le),Nothing,Nothing) -> + ((Action act stack,lm,le), Just (fun e env -> (LEXP_aux (LEXP_tup ltups) (l,annot),env)), Just new_v) + | ((Action act stack,lm,le), Just le_builder, Nothing) -> + ((Action act stack,lm,le), + Just (fun e env -> + let (lexp,env) = le_builder e env in + (LEXP_aux (LEXP_tup (lexp::ltups)) (l,annot),env)), Just value) + | ((Action act stack, lm,le), Just le_builder, Just v) -> + ((Action act stack, lm, le), + Just (fun e env -> + let (lexp,env) = le_builder e env in + (LEXP_aux (LEXP_tup (lexp::ltups)) (l,annot),env)), Just (V_tuple (v::vs))) + | ((Error l msg,lm,le),_,_) -> ((Error l msg,lm,le),Nothing,Nothing) + | _ -> + ((Error l "Internal error: Unexpected pattern match failure in LEXP_tup",l_mem,l_env),Nothing,Nothing) + end) + end + | LEXP_vector lexp exp -> + match (interp_main mode t_level l_env l_mem exp) with + | (Value i,lm,le) -> + (match detaint i with + | V_unknown -> ((Value i,lm,le),Nothing,Nothing) + | V_lit (L_aux (L_num n) ln) -> + let next_builder le_builder = + (fun e env -> + let (lexp,env) = le_builder e env in + let (ie,env) = to_exp mode env i in + (LEXP_aux (LEXP_vector lexp ie) (l,annot), env)) in + let n = natFromInteger n in + (match (create_write_message_or_update mode t_level value l_env lm false lexp) with + | ((Value v_whole,lm,le),maybe_builder,maybe_value) -> + let v = detaint v_whole in + let nth _ = detaint (access_vector v n) in + (match v with + | V_unknown -> ((Value v_whole,lm,le),Nothing,Nothing) + | V_boxref i _ -> + (match (in_mem lm i,is_top_level,maybe_builder) with + | ((V_vector _ _ _ as vec),true,_) -> + let new_vec = fupdate_vector_slice vec (V_vector 1 default_dir [value]) n n in + ((Value (V_lit (L_aux L_unit Unknown)), + update_mem mode.track_lmem lm i new_vec, l_env), Nothing,Nothing) + | ((V_track (V_vector _ _ _ as vec) r), true,_) -> + let new_vec = fupdate_vector_slice vec (V_vector 1 default_dir [value]) n n in + ((Value (V_lit (L_aux L_unit Unknown)), + update_mem mode.track_lmem lm i (taint new_vec r),l_env),Nothing,Nothing) + | ((V_vector _ _ _ as vec),false, Just lexp_builder) -> + ((Value (access_vector vec n), lm, l_env), Just (next_builder lexp_builder),Nothing) + | (v,_,_) -> + Assert_extra.failwith("no vector findable in set bit, found " ^ (string_of_value v)) + end ) + | V_vector inc m vs -> + (match (nth(),is_top_level,maybe_builder) with + | (V_register regform,true,_) -> + let start_pos = reg_start_pos regform in + let reg_size = reg_size regform in + ((Action (Write_reg regform Nothing (update_vector_start default_dir start_pos reg_size value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) + (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env), + Nothing,Nothing) + | (V_register regform,false,Just lexp_builder) -> + let start_pos = reg_start_pos regform in + let reg_size = reg_size regform in + ((Action (Write_reg regform Nothing (update_vector_start default_dir start_pos reg_size value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) + (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env), + Just (next_builder lexp_builder),maybe_value) + | (V_boxref n t,true,_) -> + ((Value (V_lit (L_aux L_unit Unknown)), update_mem mode.track_lmem lm n value, l_env), + Nothing,Nothing) + | (V_unknown,true,_) -> ((Value (V_lit (L_aux L_unit Unknown)), lm, l_env),Nothing,Nothing) + | (v,true,_) -> + ((Error l "Vector does not contain reg or register values",lm,l_env),Nothing,Nothing) + | ((V_boxref n t),false, Just lexp_builder) -> + ((Value (in_mem lm n),lm, l_env),Just (next_builder lexp_builder),Nothing) + | (v,false, Just lexp_builder) -> + ((Value v,lm,le), Just (next_builder lexp_builder),Nothing) + | _ -> Assert_extra.failwith "Vector assignment logic incomplete" + end) + | V_vector_sparse n m inc vs d -> + (match (nth(),is_top_level,maybe_builder) with + | (V_register regform,true,_) -> + let start_pos = reg_start_pos regform in + let reg_size = reg_size regform in + ((Action (Write_reg regform Nothing (update_vector_start default_dir start_pos reg_size value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env),Nothing,Nothing) + | (V_register regform,false,Just lexp_builder) -> + let start_pos = reg_start_pos regform in + let reg_size = reg_size regform in + ((Action (Write_reg regform Nothing (update_vector_start default_dir start_pos reg_size value)) + (Thunk_frame (E_aux (E_lit (L_aux L_unit l)) (l,intern_annot annot)) t_level l_env l_mem Top), + l_mem,l_env), + Just (next_builder lexp_builder),Nothing) + | (V_boxref n t,true,_) -> + ((Value (V_lit (L_aux L_unit Unknown)), update_mem mode.track_lmem lm n value, l_env), + Nothing,Nothing) + | (v,true,_) -> + ((Error l ("Vector does not contain reg or register values " ^ (string_of_value v)), + lm,l_env), Nothing,Nothing) + | ((V_boxref n t),false, Just lexp_builder) -> + ((Value (in_mem lm n),lm, l_env),Just (next_builder lexp_builder),Nothing) + | (v,false, Just lexp_builder) -> + ((Value v,lm,le), Just (next_builder lexp_builder), Nothing) + | _ -> Assert_extra.failwith "Vector assignment logic incomplete" + end) + | v -> + ((Error l ("Vector access to write of non-vector" ^ (string_of_value v)),lm,l_env),Nothing,Nothing) + end) + | ((Action a s,lm,le),Just lexp_builder,maybe_value) -> + (match (a,is_top_level) with + | ((Write_reg regf Nothing value),true) -> + ((Action (Write_reg regf (Just (n,n)) + (if (vector_length value) = 1 + then (update_vector_start default_dir n 1 value) + else (access_vector value n))) s, lm,le), Nothing, Nothing) + | ((Write_reg regf Nothing value),false) -> + ((Action (Write_reg regf (Just (n,n)) + (if (vector_length value) = 1 + then (update_vector_start default_dir n 1 value) + else (access_vector value n))) s,lm,le), + Just (next_builder lexp_builder), Nothing) + | ((Write_mem id a Nothing value),true) -> + ((Action (Write_mem id a (Just (n,n)) value) s,lm,le), Nothing, Nothing) + | ((Write_mem id a Nothing value),false) -> + ((Action (Write_mem id a (Just (n,n)) value) s,lm,le), Just (next_builder lexp_builder), Nothing) + | _ -> ((Action a s,lm,le), Just (next_builder lexp_builder), Nothing) end) + | e -> e end) + | v -> + ((Error l ("Vector access must be a number given " ^ (string_of_value v)),lm,le),Nothing,Nothing) end) + | (Action a s,lm,le) -> + ((Action a s,lm,le), Just (fun e env -> (LEXP_aux (LEXP_vector lexp e) (l,annot), env)), Nothing) + | e -> (e,Nothing,Nothing) end + | LEXP_vector_range lexp exp1 exp2 -> + match (interp_main mode t_level l_env l_mem exp1) with + | (Value i1, lm, le) -> + (match detaint i1 with + | V_unknown -> ((Value i1,lm,le),Nothing,Nothing) + | V_lit (L_aux (L_num n1) ln1) -> + (match (interp_main mode t_level l_env l_mem exp2) with + | (Value i2,lm,le) -> + (match detaint i2 with + | V_unknown -> ((Value i2,lm,le),Nothing,Nothing) + | V_lit (L_aux (L_num n2) ln2) -> + let next_builder le_builder = + (fun e env -> + let (e1,env) = to_exp mode env i1 in + let (e2,env) = to_exp mode env i2 in + let (lexp,env) = le_builder e env in + (LEXP_aux (LEXP_vector_range lexp e1 e2) (l,annot), env)) in + let (n1,n2) = (natFromInteger n1,natFromInteger n2) in + (match (create_write_message_or_update mode t_level value l_env lm false lexp) with + | ((Value v,lm,le), Just lexp_builder,_) -> + (match (detaint v,is_top_level) with + | (V_vector m inc vs,true) -> + ((Value (V_lit (L_aux L_unit Unknown)), + update_vector_slice mode.track_lmem v value n1 n2 lm, l_env), Nothing, Nothing) + | (V_boxref _ _, true) -> + ((Value (V_lit (L_aux L_unit Unknown)), + update_vector_slice mode.track_lmem v value n1 n2 lm, l_env), Nothing, Nothing) + | (V_vector m inc vs,false) -> + ((Value (slice_vector v n1 n2),lm,l_env), Just (next_builder lexp_builder), Nothing) + | (V_register regform,true) -> + let start_pos = reg_start_pos regform in + let reg_size = reg_size regform in + ((Action (Write_reg regform (Just (n1,n2)) (update_vector_start default_dir start_pos reg_size v)) + (mk_thunk l annot t_level l_env l_mem), + l_mem,l_env), + Just (next_builder lexp_builder), Nothing) + | (V_unknown,_) -> + let inc = n1 < n2 in + let start = if inc then n1 else (n2-1) in + let size = if inc then n2-n1 +1 else n1 -n2 +1 in + ((Value (V_vector start (if inc then IInc else IDec) (List.replicate size V_unknown)), + lm,l_env),Nothing,Nothing) + | _ -> ((Error l "Vector required",lm,le),Nothing,Nothing) end) + | ((Action (Write_reg regf Nothing value) s, lm,le), Just lexp_builder,_) -> + let len = (if n1 < n2 then n2 -n1 else n1 - n2) +1 in + ((Action + (Write_reg regf (Just (n1,n2)) + (if (vector_length value) <= len + then (update_vector_start default_dir n1 len value) + else (slice_vector value n1 n2))) s,lm,le), + Just (next_builder lexp_builder), Nothing) + | ((Action (Write_mem id a Nothing value) s,lm,le), Just lexp_builder,_) -> + ((Action (Write_mem id a (Just (n1,n2)) value) s,lm,le), Just (next_builder lexp_builder), Nothing) + | ((Action a s,lm,le), Just lexp_builder,_ ) -> + ((Action a s,lm,le), Just (next_builder lexp_builder), Nothing) + | e -> e end) + | _ -> ((Error l "Vector slice requires a number", lm, le),Nothing,Nothing) end) + | (Action a s,lm,le) -> + ((Action a s,lm, le), + Just (fun e env -> + let (e1,env) = to_exp mode env i1 in + (LEXP_aux (LEXP_vector_range lexp e1 e) (l,annot), env)), Nothing) + | e -> (e,Nothing,Nothing) end) + | _ -> ((Error l "Vector slice requires a number", lm, le),Nothing,Nothing) end) + | (Action a s,lm,le) -> + ((Action a s, lm,le), Just (fun e env -> (LEXP_aux (LEXP_vector_range lexp e exp2) (l,annot), env)), Nothing) + | e -> (e,Nothing,Nothing) end + | LEXP_field lexp id -> + (match (create_write_message_or_update mode t_level value l_env l_mem false lexp) with + | ((Value (V_record t fexps),lm,le),Just lexp_builder,_) -> + let next_builder = Just (fun e env -> let (lexp,env) = (lexp_builder e env) in + (LEXP_aux (LEXP_field lexp id) (l,annot), env)) in + match (in_env (env_from_list fexps) (get_id id),is_top_level) with + | (Just (V_boxref n t),true) -> + ((Value (V_lit (L_aux L_unit l)), update_mem mode.track_lmem lm n value, l_env),Nothing,Nothing) + | (Just (V_boxref n t),false) -> ((Value (in_mem lm n),lm,l_env),next_builder,Nothing) + | (Just v, true) -> ((Error l "Mutating a field access requires a reg type",lm,le),Nothing,Nothing) + | (Just v,false) -> ((Value v,lm,l_env),next_builder,Nothing) + | (Nothing,_) -> ((Error l "Field not found in specified record",lm,le),Nothing,Nothing) end + | ((Action a s,lm,le), Just lexp_builder,_) -> + let next_builder = Just (fun e env -> let (lexp,env) = (lexp_builder e env) in + (LEXP_aux (LEXP_field lexp id) (l,annot), env)) in + match a with + | Read_reg _ _ -> ((Action a s,lm,le), next_builder, Nothing) + | Read_mem _ _ _ -> ((Action a s,lm,le), next_builder, Nothing) + | Read_mem_tagged _ _ _ -> ((Action a s,lm,le), next_builder, Nothing) + | Call_extern _ _ -> ((Action a s,lm,le), next_builder, Nothing) + | Write_reg ((Form_Reg _ (Just(Typ_aux (Typ_id (Id_aux (Id id') _)) _,_,_,_,_)) _) as regf) Nothing value -> + match in_env subregs id' with + | Just(indexes) -> + match in_env indexes (get_id id) with + | Just ir -> + ((Action + (Write_reg (Form_SubReg id regf ir) Nothing + (update_vector_start default_dir (get_first_index_range ir) + (get_index_range_size ir) value)) s, + lm,le), + (if is_top_level then Nothing else next_builder), Nothing) + | _ -> ((Error l "Internal error, unrecognized write, no field",lm,le),Nothing,Nothing) + end + | Nothing -> ((Error l "Internal error, unrecognized write, no subreges",lm,le),Nothing,Nothing) end + | _ -> ((Error l "Internal error, unrecognized write, no matching action",lm,le),Nothing,Nothing) + end + | e -> e end) + end + +and create_write_message_or_update mode t_level value l_env l_mem is_top_level le = + let _ = debug_fun_enter mode "create_write_message_or_update" [show le] in + let retval = __create_write_message_or_update (indent_mode mode) t_level value l_env l_mem is_top_level le in + let _ = debug_fun_exit mode "create_write_message_or_update" "_" in + retval + +and __interp_letbind mode t_level l_env l_mem (LB_aux lbind (l,annot)) = + match lbind with + | LB_val pat exp -> + match (interp_main mode t_level l_env l_mem exp) with + | (Value v,lm,le) -> + (match match_pattern t_level pat v with + | (true,used_unknown,env) -> ((Value (V_lit (L_aux L_unit l)), lm, (union_env env l_env)),Nothing) + | _ -> ((Error l "Pattern in letbind did not match value",lm,le),Nothing) end) + | (Action a s,lm,le) -> ((Action a s,lm,le),(Just (fun e -> (LB_aux (LB_val pat e) (l,annot))))) + | e -> (e,Nothing) end +end + +and interp_letbind mode t_level l_env l_mem lb = + let _ = debug_fun_enter mode "interp_letbind" [show lb] in + let retval = __interp_letbind (indent_mode mode) t_level l_env l_mem lb in + let _ = debug_fun_exit mode "interp_letbind" "_" in + retval + +and __interp_alias_read mode t_level l_env l_mem (AL_aux alspec (l,annot)) = + let (Env defs instrs default_dir lets regs ctors subregs aliases debug) = t_level in + let stack = Hole_frame redex_id (E_aux (E_id redex_id) (l,(intern_annot annot))) t_level l_env l_mem Top in + let get_reg_typ_name typ = + match typ with + | Typ_aux (Typ_id (Id_aux (Id i) _)) _ -> i + | _ -> Assert_extra.failwith "Alias reg typ not well formed" + end in + match alspec with + | AL_subreg (RI_aux (RI_id reg) (li,((Just (t,_,_,_,_)) as annot'))) subreg -> + let reg_ti = get_reg_typ_name t in + (match in_env subregs reg_ti with + | Just indexes -> + (match in_env indexes (get_id subreg) with + | Just ir -> (Action (Read_reg (Form_SubReg subreg (Form_Reg reg annot' default_dir) ir) Nothing) stack, + l_mem, l_env) + | _ -> (Error l "Internal error, alias spec has unknown field", l_mem, l_env) end) + | _ -> (Error l (String.stringAppend "Internal error: alias spec has unknown register type " reg_ti), + l_mem, l_env) end) + | AL_bit (RI_aux (RI_id reg) (_,annot')) e -> + resolve_outcome (interp_main mode t_level l_env l_mem e) + (fun v le lm -> match v with + | V_lit (L_aux (L_num i) _) -> + let i = natFromInteger i in + (Action (Read_reg (Form_Reg reg annot' default_dir) (Just (i,i))) stack, l_mem, l_env) + | _ -> Assert_extra.failwith "alias bit did not reduce to number" end) + (fun a -> a) (*Should not currently happen as type system enforces constants*) + | AL_slice (RI_aux (RI_id reg) (_,annot')) start stop -> + resolve_outcome (interp_main mode t_level l_env l_mem start) + (fun v lm le -> + match v with + | V_lit (L_aux (L_num start) _) -> + (resolve_outcome + (interp_main mode t_level l_env lm stop) + (fun v le lm -> + (match v with + | V_lit (L_aux (L_num stop) _) -> + let (start,stop) = (natFromInteger start,natFromInteger stop) in + (Action (Read_reg (Form_Reg reg annot' default_dir) (Just (start,stop))) stack, l_mem, l_env) + | _ -> Assert_extra.failwith ("Alias slice evaluted non-lit " ^ (string_of_value v)) + end)) + (fun a -> a)) + | _ -> Assert_extra.failwith ("Alias slice evaluated non-lit "^ string_of_value v) + end) + (fun a -> a) (*Neither action function should occur, due to above*) + | AL_concat (RI_aux (RI_id reg1) (l1, annot1)) (RI_aux (RI_id reg2) annot2) -> + (Action (Read_reg (Form_Reg reg1 annot1 default_dir) Nothing) + (Hole_frame redex_id + (E_aux (E_vector_append (E_aux (E_id redex_id) (l1, (intern_annot annot1))) + (E_aux (E_id reg2) annot2)) + (l,(intern_annot annot))) t_level l_env l_mem Top), l_mem,l_env) + | _ -> Assert_extra.failwith "alias spec not well formed" +end + +and interp_alias_read mode t_level l_env l_mem al = + let _ = debug_fun_enter mode "interp_alias_read" [show al] in + let retval = __interp_alias_read (indent_mode mode) t_level l_env l_mem al in + let _ = debug_fun_exit mode "interp_alias_read" retval in + retval + +let rec eval_toplevel_let handle_action tlevel env mem lbind = + match interp_letbind <| eager_eval=true; track_values=false; track_lmem=false; debug=false; debug_indent="" |> tlevel env mem lbind with + | ((Value v, lm, (LEnv _ le)),_) -> Just le + | ((Action a s,lm,le), Just le_builder) -> + (match handle_action (Action a s) with + | Just value -> + (match s with + | Hole_frame id exp tl lenv lmem s -> + eval_toplevel_let handle_action tl (add_to_env (id,value) lenv) lmem (le_builder exp) + | _ -> Assert_extra.failwith "Top level def evaluation created a thunk frame" end) + | Nothing -> Nothing end) + | _ -> Nothing end + +let rec to_global_letbinds handle_action (Defs defs) t_level = + let (Env fdefs instrs default_dir lets regs ctors subregs aliases debug) = t_level in + match defs with + | [] -> ((Value (V_lit (L_aux L_unit Unknown)), (emem "global_letbinds"), eenv),t_level) + | def::defs -> + match def with + | DEF_val lbind -> + match eval_toplevel_let handle_action t_level eenv (emem "global_letbinds") lbind with + | Just le -> + to_global_letbinds handle_action + (Defs defs) + (Env fdefs instrs default_dir (Map.(union) lets le) regs ctors subregs aliases debug) + | Nothing -> + to_global_letbinds handle_action (Defs defs) + (Env fdefs instrs default_dir lets regs ctors subregs aliases debug) end + | DEF_type (TD_aux tdef _) -> + match tdef with + | TD_enum id ns ids _ -> + let typ = mk_typ_id (get_id id) in + let enum_vals = + Map.fromList + (snd + (List.foldl (fun (c,rst) eid -> (1+c,(get_id eid,V_ctor eid typ (C_Enum c) unitv)::rst)) (0,[]) ids)) in + to_global_letbinds + handle_action (Defs defs) + (Env fdefs instrs default_dir (Map.(union) lets enum_vals) regs ctors subregs aliases debug) + | _ -> to_global_letbinds handle_action (Defs defs) t_level end + | _ -> to_global_letbinds handle_action (Defs defs) t_level + end + end + +let rec extract_default_direction (Defs defs) = match defs with + | [] -> IInc (*When lack of a declared default, go for inc*) + | def::defs -> + match def with + | DEF_default (DT_aux (DT_order (Ord_aux Ord_inc _)) _) -> IInc + | DEF_default (DT_aux (DT_order (Ord_aux Ord_dec _)) _) -> IDec + | _ -> extract_default_direction (Defs defs) end end + +(*TODO Contemplate making execute environment variable instead of constant*) +let to_top_env debug external_functions defs = + let direction = (extract_default_direction defs) in + let t_level = Env (to_fdefs defs) + (extract_instructions "execute" defs) + direction + Map.empty (* empty letbind and enum values, call below will fill in any *) + (to_registers direction defs) + (to_data_constructors defs) (to_register_fields defs) (to_aliases defs) debug in + let (o,t_level) = to_global_letbinds (external_functions direction) defs t_level in + match o with + | (Value _,_,_) -> (Nothing,t_level) + | (o,_,_) -> (Just o,t_level) + end + +let __interp mode external_functions defs exp = + match (to_top_env mode.debug external_functions defs) with + | (Nothing,t_level) -> + interp_main mode t_level eenv (emem "top level") exp + | (Just o,_) -> (o,(emem "top level error"),eenv) + end + +let interp mode external_functions defs exp = + let _ = debug_fun_enter mode "interp" [show exp] in + let retval = __interp (indent_mode mode) external_functions defs exp in + let _ = debug_fun_exit mode "interp" retval in + retval + +let rec __resume_with_env mode stack value = + match (stack,value) with + | (Top,_) -> (Error Unknown "Top hit without expression to evaluate in resume_with_env",eenv) + | (Hole_frame id exp t_level env mem Top,Just value) -> + match interp_main mode t_level (add_to_env (id,value) env) mem exp with | (o,_,e) -> (o,e) end + | (Hole_frame id exp t_level env mem stack,Just value) -> + match resume_with_env mode stack (Just value) with + | (Value v,e) -> + match interp_main mode t_level (add_to_env (id,v) env) mem exp with | (o,_,e) -> (o,e) end + | (Action action stack,e) -> (Action action (Hole_frame id exp t_level env mem stack),e) + | (Error l s,e) -> (Error l s,e) + end + | (Hole_frame id exp t_level env mem stack, Nothing) -> + match resume_with_env mode stack Nothing with + | (Value v,e) -> + match interp_main mode t_level (add_to_env (id,v) env) mem exp with | (o,_,e) -> (o,e) end + | (Action action stack,e) -> (Action action (Hole_frame id exp t_level env mem stack),e) + | (Error l s,e) -> (Error l s,e) + end + | (Thunk_frame exp t_level env mem Top,_) -> + match interp_main mode t_level env mem exp with | (o,_,e) -> (o,e) end + | (Thunk_frame exp t_level env mem stack,value) -> + match resume_with_env mode stack value with + | (Value v,e) -> + match interp_main mode t_level env mem exp with | (o,_,e) -> (o,e) end + | (Action action stack,e) -> (Action action (Thunk_frame exp t_level env mem stack),e) + | (Error l s,e) -> (Error l s,e) + end + end + +and resume_with_env mode stack value = + let _ = debug_fun_enter mode "resume_with_env" [show value] in + let retval = __resume_with_env (indent_mode mode) stack value in + let _ = debug_fun_exit mode "interp" retval in + retval + + +let rec __resume mode stack value = + match (stack,value) with + | (Top,_) -> (Error Unknown "Top hit without expression to evaluate in resume",(emem "top level error"),eenv) + | (Hole_frame id exp t_level env mem Top,Just value) -> + interp_main mode t_level (add_to_env (id,value) env) mem exp + | (Hole_frame id exp t_level env mem Top,Nothing) -> + (Error Unknown "Top hole frame hit wihtout a value in resume", mem, env) + | (Hole_frame id exp t_level env mem stack,Just value) -> + match resume mode stack (Just value) with + | (Value v,_,_) -> + interp_main mode t_level (add_to_env (id,v) env) mem exp + | (Action action stack,lm,le) -> (Action action (Hole_frame id exp t_level env mem stack),lm,le) + | (Error l s,lm,le) -> (Error l s,lm,le) + end + | (Hole_frame id exp t_level env mem stack, Nothing) -> + match resume mode stack Nothing with + | (Value v,_,_) -> + interp_main mode t_level (add_to_env (id,v) env) mem exp + | (Action action stack,lm,le) -> (Action action (Hole_frame id exp t_level env mem stack),lm,le) + | (Error l s,lm,le) -> (Error l s,lm,le) + end + | (Thunk_frame exp t_level env mem Top,_) -> + interp_main mode t_level env mem exp + | (Thunk_frame exp t_level env mem stack,value) -> + match resume mode stack value with + | (Value v,_,_) -> interp_main mode t_level env mem exp + | (Action action stack,lm,le) -> (Action action (Thunk_frame exp t_level env mem stack), lm, le) + | (Error l s,lm,le) -> (Error l s,lm,le) + end + end + +and resume mode stack value = + let _ = debug_fun_enter mode "resume" [show value] in + let retval = __resume (indent_mode mode) stack value in + let _ = debug_fun_exit mode "resume" retval in + retval |