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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, 0 insertions, 3407 deletions
diff --git a/src/lem_interp/0.11/interp.lem b/src/lem_interp/0.11/interp.lem deleted file mode 100644 index 431c1a08..00000000 --- a/src/lem_interp/0.11/interp.lem +++ /dev/null @@ -1,3407 +0,0 @@ -(*========================================================================*) -(* 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 |