Source file pretyping.ml
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open Utils
module Path = BatPathGen.OfString
module F = Format
module L = Location
module A = Annotations
module S = Syntax
module E = Expr
module P = Prog
module W = Wsize
module T = Type
let loc_of_tuples default locs =
List.fold_left L.merge default locs
type sop = [ `Op2 of S.peop2 | `Op1 of S.peop1]
type tyerror =
| UnknownVar of A.symbol
| UnknownFun of A.symbol
| InvalidArrayType of P.epty
| TypeMismatch of P.epty pair
| NoOperator of sop * P.epty list
| InvalidOperator of sop
| NoReturnStatement of P.funname * int
| InvalidReturnStatement of P.funname * int * int
| InvalidSignatureStorage of P.funname * S.pstorage * A.symbol * W.v_kind
| InvalidArgCount of int * int
| InvalidLvalCount of int * int
| DuplicateFun of A.symbol * L.t
| DuplicateAlias of A.symbol * P.epty L.located * P.epty L.located
| TypeNotFound of A.symbol
| InvalidTypeAlias of A.symbol L.located option * P.epty
| InvalidCast of P.epty pair
| InvalidTypeForGlobal of P.epty
| GlobArrayNotWord
| GlobWordNotArray
| EqOpWithNoLValue
| CallNotAllowed
| PrimNotAllowed
| Unsupported of string
| UnknownPrim of A.symbol * string
| PrimWrongSuffix of A.symbol * Sopn.prim_x86_suffix list
| PtrOnlyForArray
| PackSigned
| PackWrongWS of int
| PackWrongPE of int
| PackWrongLength of int * int
| UnsupportedZeroExtend of (F.formatter -> unit)
| InvalidZeroExtend of W.wsize * W.wsize * (F.formatter -> unit)
| StringError of string
exception TyError of L.t * tyerror
let string_error fmt =
let buf = Buffer.create 127 in
let bfmt = Format.formatter_of_buffer buf in
Format.kfprintf
(fun bfmt ->
Format.pp_print_flush bfmt ();
(StringError (Buffer.contents buf)))
bfmt fmt
let tyerror ~loc (code : tyerror) =
TyError (loc, code)
let rs_tyerror ~loc (code : tyerror) =
raise (tyerror ~loc code)
let pp_suffix fmt =
let open Sopn in
let open PrintCommon in
function
| PVp sz -> F.fprintf fmt "_%a" pp_wsize sz
| PVs (sg, sz) -> F.fprintf fmt "_%s%a" (string_of_signess sg) pp_wsize sz
| PVv (ve, sz) -> F.fprintf fmt "_%s" (string_of_velem Unsigned sz ve)
| PVsv (sg, ve, sz) -> F.fprintf fmt "_%s" (string_of_velem sg sz ve)
| PVx (szo, szi) -> F.fprintf fmt "_u%au%a" pp_wsize szo pp_wsize szi
| PVvv (ve, sz, ve', sz') -> F.fprintf fmt "_%s_%s" (string_of_velem Unsigned sz ve) (string_of_velem Unsigned sz' ve')
let pp_tyerror fmt (code : tyerror) =
let pp_eptype = Printer.pp_eptype ~debug:false in
match code with
| UnknownVar x ->
F.fprintf fmt "unknown variable: `%s'" x
| UnknownFun x ->
F.fprintf fmt "unknown function: `%s'" x
| InvalidArrayType ty ->
F.fprintf fmt "the expression has type %a instead of array"
pp_eptype ty
| TypeMismatch (t1,t2) ->
F.fprintf fmt
"the expression has type %a instead of %a"
pp_eptype t1 pp_eptype t2
| InvalidCast (t1,t2) ->
F.fprintf fmt "can not implicitly cast %a into %a"
pp_eptype t1 pp_eptype t2
| InvalidTypeForGlobal ty ->
F.fprintf fmt "globals should have type word; found: ‘%a’"
pp_eptype ty
| GlobArrayNotWord ->
F.fprintf fmt "the definition is an array and not a word"
| GlobWordNotArray ->
F.fprintf fmt "the definition is a word and not an array"
| InvalidOperator o ->
F.fprintf fmt "invalid operator %s"
(match o with
| `Op2 o -> (S.string_of_peop2 o)
| `Op1 o -> (S.string_of_peop1 o))
| NoOperator (`Op2 o, ts) ->
F.fprintf fmt
"no operator %s for these types %a"
(S.string_of_peop2 o)
(pp_list " * " pp_eptype) ts
| NoOperator (`Op1 o, ts) ->
F.fprintf fmt
"no operator %s for these type %a"
(S.string_of_peop1 o)
(pp_list " * " pp_eptype) ts
| NoReturnStatement (name, expected) ->
F.fprintf fmt "function “%s” has no return statement (but its signature claims that %d values should be returned)" name.P.fn_name expected
| InvalidReturnStatement (name, given, expected) ->
F.fprintf fmt "return statement of function %s has %d values instead of %d (as claimed by the signature)" name.P.fn_name given expected
| InvalidSignatureStorage (fname, sto, var_name, var_kind) ->
F.fprintf fmt "In function “%s”, return statement variable “%s” has storage type “%a”, which differs from declared return storage type “%s”"
fname.P.fn_name
var_name
PrintCommon.pp_kind var_kind
(S.pp_storage sto)
| InvalidArgCount (n1, n2) ->
F.fprintf fmt
"invalid number of arguments, %d provided instead of %d" n1 n2
| InvalidLvalCount (n1, n2) ->
F.fprintf fmt
"invalid number of lvalues, %d provided instead of %d" n1 n2
| DuplicateFun (f, loc) ->
F.fprintf fmt
"The function %s is already declared at %s"
f (L.tostring loc)
| DuplicateAlias (id, newtype, oldtype) ->
F.fprintf fmt
"Type '%s' (ie: '%a') is already declared at %s (with type : '%a')"
id
pp_eptype (L.unloc newtype)
(L.tostring (L.loc oldtype))
pp_eptype (L.unloc oldtype)
| TypeNotFound (id) ->
F.fprintf fmt
"Type '%s' not found"
id
| InvalidTypeAlias (id,typ) ->
let pp_id fmt (id, typ) =
match id with
| None -> F.fprintf fmt "'%a'" pp_eptype typ
| Some id ->
F.fprintf fmt "'%s' (ie: '%a'), defined at %s," (L.unloc id) pp_eptype typ
(L.tostring (L.loc id)) in
F.fprintf fmt
"Type %a is not allowed as array element. Only machine words (w8, w16 ...) allowed"
pp_id (id, typ)
| EqOpWithNoLValue ->
F.fprintf fmt
"operator-assign requires a lvalue"
| CallNotAllowed ->
F.fprintf fmt
"function calls not allowed at that point"
| PrimNotAllowed ->
F.fprintf fmt
"primitive calls not allowed at that point"
| Unsupported s ->
F.fprintf fmt "%s" s
| UnknownPrim(s, msg) ->
F.fprintf fmt "unknown primitive: \"%s\"%s" s msg
| PrimWrongSuffix (s, []) ->
F.fprintf fmt "primitive accepts no size annotation: `%s'" s
| PrimWrongSuffix (s, sfxs) ->
F.fprintf fmt "primitive “%s” only accepts the following size annotations: %a" s
(pp_list ",@ " pp_suffix) sfxs
| PtrOnlyForArray ->
F.fprintf fmt "Pointer allowed only on array"
| PackSigned ->
F.fprintf fmt "packs should be unsigned"
| PackWrongWS n ->
F.fprintf fmt "wrong word-size (%d) in pack" n
| PackWrongPE n ->
F.fprintf fmt "wrong element-size (%d) in pack" n
| PackWrongLength (e, f) ->
F.fprintf fmt "wrong length of pack; expected: %d; found: %d" e f
| UnsupportedZeroExtend name ->
F.fprintf fmt "primitive operator %t does not support zero-extension" name
| InvalidZeroExtend (src, dst, name) ->
F.fprintf fmt "primitive operator %t returns an output of size %a; it cannot be zero-extended to size %a" name PrintCommon.pp_wsize src PrintCommon.pp_wsize dst
| StringError s ->
F.fprintf fmt "%s" s
let qualify ns n = Format.asprintf "%s::%s" ns n
let fully_qualified (stack: (A.symbol * 'a) list) n =
List.fold_left (fun n (ns, _) -> qualify ns n) n stack
type fun_sig = { fs_tin : P.epty list ; fs_tout : P.epty list }
module Env : sig
type 'asm env
val empty : 'asm env
val decls : 'asm env -> (unit, 'asm) P.pmod_item list
val add_from : 'asm env -> string * string -> 'asm env
val enter_file : 'asm env -> A.pident option -> L.t option -> string -> ('asm env * string) option
val exit_file : 'asm env -> 'asm env
val dependencies : 'asm env -> Path.t list
val add_reserved : 'asm env -> string -> 'asm env
val is_reserved : 'asm env -> string -> bool
val set_known_implicits : 'asm env -> (string * string) list -> 'asm env
val get_known_implicits : 'asm env -> (string * string) list
val enter_namespace : 'asm env -> A.pident -> 'asm env
val exit_namespace : 'asm env -> 'asm env
module Vars : sig
val push_global : 'asm env -> (P.pvar * P.epty * P.pexpr_ P.ggexpr ) -> 'asm env
val push_param : 'asm env -> (P.pvar * P.epty * P.pexpr) -> 'asm env
val push_local : 'asm env -> P.pvar * P.epty -> 'asm env
val push_implicit : 'asm env -> P.pvar * P.epty -> 'asm env
val find : A.symbol -> 'asm env -> (P.pvar * P.epty * E.v_scope) option
val iter_locals : (P.pvar -> unit) -> 'asm env -> unit
val clear_locals : 'asm env -> 'asm env
end
module TypeAlias : sig
val push : 'asm env -> A.pident -> P.epty -> 'asm env
val get : 'asm env -> A.pident -> P.epty L.located
end
module Funs : sig
val push : 'asm env -> (unit, 'asm) P.pfunc -> fun_sig -> 'asm env
val find : A.symbol -> 'asm env -> ((unit, 'asm) P.pfunc * fun_sig) option
end
module Exec : sig
val push : L.t -> P.funname -> (Z.t * Z.t) list -> 'asm env -> 'asm env
val get : 'asm env -> (P.funname * (Z.t * Z.t) list) L.located list
end
end = struct
type loader =
{ loaded : (A.symbol, Path.t list) Map.t
; idir : Path.t
; dirs : Path.t list
; from : (A.symbol, Path.t) Map.t
}
type 'asm global_bindings = {
gb_types : (A.symbol, P.epty L.located) Map.t;
gb_vars : (A.symbol, P.pvar * P.epty * E.v_scope) Map.t;
gb_funs : (A.symbol, (unit, 'asm) P.pfunc * fun_sig) Map.t;
}
type 'asm env = {
e_bindings : (A.symbol * 'asm global_bindings) list * 'asm global_bindings;
e_decls : (unit, 'asm) P.pmod_item list;
e_exec : (P.funname * (Z.t * Z.t) list) L.located list;
e_loader : loader;
e_declared : P.Spv.t ref;
e_reserved : Ss.t;
e_known_implicits : (string * string) list;
}
let empty_loader =
{ loaded = Map.empty
; idir = Path.of_string (Sys.getcwd ())
; dirs = [[]]
; from = Map.empty
}
let empty_gb = { gb_vars = Map.empty ; gb_funs = Map.empty; gb_types = Map.empty }
let empty : 'asm env =
{ e_bindings = [], empty_gb
; e_decls = []
; e_exec = []
; e_loader = empty_loader
; e_declared = ref P.Spv.empty
; e_reserved = Ss.empty
; e_known_implicits = [];
}
let add_reserved env s =
{ env with e_reserved = Ss.add s env.e_reserved }
let is_reserved env s =
Ss.mem s env.e_reserved
let set_known_implicits env known_implicits = { env with e_known_implicits = known_implicits }
let get_known_implicits env = env.e_known_implicits
let enter_namespace env ns =
let stack, bot = env.e_bindings in
{ env with e_bindings = (L.unloc ns, empty_gb) :: stack, bot }
let merge_bindings on_duplicate ns =
Map.foldi (fun n v dst ->
let n = qualify ns n in
begin match Map.find n dst with
| exception Not_found -> ()
| k -> on_duplicate n v k end;
Map.add n v dst)
let warn_duplicate_var name (v, _, _) (v', _, _) =
warning DuplicateVar (L.i_loc0 v.P.v_dloc)
"the variable %s is already declared at %a"
name L.pp_loc v'.P.v_dloc
let err_duplicate_fun name (v, _) (fd, _) =
rs_tyerror ~loc:v.P.f_loc (DuplicateFun(name, fd.P.f_loc))
let err_duplicate_type name t1 t2 =
rs_tyerror ~loc:(L.loc t2) (DuplicateAlias (name,t1,t2))
let merge_bindings (ns, src) dst =
{ gb_vars = merge_bindings warn_duplicate_var ns src.gb_vars dst.gb_vars
; gb_funs = merge_bindings err_duplicate_fun ns src.gb_funs dst.gb_funs
; gb_types = merge_bindings err_duplicate_type ns src.gb_types dst.gb_types
}
let exit_namespace env =
match env.e_bindings with
| [], _ -> assert false
| top :: [], bot ->
let merged = merge_bindings top bot in
{ env with e_bindings = [], merged }
| top :: (ns, next) :: stack, bot ->
let merged = merge_bindings top next in
{ env with e_bindings = (ns, merged) :: stack, bot }
let add_from env (name, filename) =
let p = Path.of_string filename in
let ap =
if Path.is_absolute p then p
else Path.concat env.e_loader.idir p in
begin match Map.find name env.e_loader.from with
| ap' ->
if ap <> ap' then
hierror ~loc:Lnone ~kind:"compilation" "cannot bind %s with %s it is already bound to %s"
name (Path.to_string ap) (Path.to_string ap')
| exception Not_found -> ()
end;
{env with e_loader =
{ env.e_loader with from = Map.add name ap env.e_loader.from }}
let enter_file env from ploc filename =
let ploc = match ploc with None -> Lnone | Some l -> Lone l in
let p = Path.of_string filename in
let loader = env.e_loader in
let current_dir =
match from with
| None -> List.hd loader.dirs
| Some name ->
if Path.is_absolute p then
hierror ~loc:ploc ~kind:"typing"
"cannot use absolute path in from %s require \"%s\""
(L.unloc name) filename;
try Map.find (L.unloc name) env.e_loader.from
with Not_found ->
rs_tyerror ~loc:(L.loc name) (string_error "unknown name %s" (L.unloc name)) in
let p =
if Path.is_absolute p then p
else Path.concat current_dir p in
let p = Path.normalize_in_tree p in
let ap =
if Path.is_absolute p then p
else Path.concat loader.idir p in
let ap = Path.normalize_in_tree ap in
let namespace = fully_qualified (fst env.e_bindings) "<>" in
if List.mem ap (Map.find_default [] namespace loader.loaded) then None
else
let e_loader =
{ loader with
loaded = Map.modify_def [] namespace (List.cons ap) loader.loaded;
dirs = List.tl p :: loader.dirs } in
Some({ env with e_loader }, Path.to_string p)
let exit_file env =
{ env with
e_loader = { env.e_loader with dirs = List.tl env.e_loader.dirs }}
let decls env = env.e_decls
let dependencies env =
Map.fold ( @ ) env.e_loader.loaded []
let find (proj: 'asm global_bindings -> (A.symbol, 'a) Map.t) (x: A.symbol) (env: 'asm env) : 'a option =
let stack, bot = env.e_bindings in
let rec loop x =
function
| [] -> None
| (_, top) :: stack ->
match Map.find x (proj top) with
| exception Not_found -> loop x stack
| v -> Some v
in match loop x stack with
| None -> Map.Exceptionless.find x (proj bot)
| r -> r
module Vars = struct
let find (x : A.symbol) (env : 'asm env) =
find (fun b -> b.gb_vars) x env
let warn_double_decl v map =
let name = v.P.v_name in
match Map.find name map with
| exception Not_found -> ()
| v' -> warn_duplicate_var name (v, (), ()) v'
let push_core (env : 'asm env) (name: P.Name.t) (v : P.pvar) (ty: P.epty) (s : E.v_scope) =
let doit m =
warn_double_decl v m.gb_vars;
{ m with gb_vars = Map.add name (v, ty, s) m.gb_vars }
in
let e_bindings =
match env.e_bindings with
| [], bot -> [], doit bot
| (ns, top) :: stack, bot ->
(ns, doit top) :: stack, bot
in
{ env with e_bindings; e_reserved = Ss.add name env.e_reserved;}
let rename_var name x =
P.GV.mk name x.P.v_kind x.P.v_ty x.P.v_dloc x.P.v_annot
let push_global env (x, ty, e) =
let name = x.P.v_name in
let x = rename_var (fully_qualified (fst env.e_bindings) name) x in
let env = push_core env name x ty Sglob in
{ env with e_decls = P.MIglobal (x, e) :: env.e_decls }
let push_param env (x, ty, e) =
let name = x.P.v_name in
let x = rename_var (fully_qualified (fst env.e_bindings) name) x in
let env = push_core env name x ty Slocal in
{ env with e_decls = P.MIparam (x, e) :: env.e_decls }
let push_local (env : 'asm env) ((v,ty) : P.pvar * P.epty) =
env.e_declared := P.Spv.add v !(env.e_declared);
push_core env v.P.v_name v ty Slocal
let push_implicit (env : 'asm env) ((v,ty) : P.pvar * P.epty) =
let vars = match env.e_bindings with (_, b) :: _, _ | [], b -> b.gb_vars in
assert (not (Map.mem v.P.v_name vars));
push_core env v.P.v_name v ty Slocal
let iter_locals f (env : 'asm env) =
P.Spv.iter f !(env.e_declared)
let clear_locals (env : 'asm env) =
{ env with e_declared = ref P.Spv.empty }
end
module TypeAlias = struct
let push (env: 'asm env) (id: A.pident) (ty: P.epty) : 'asm env =
match find (fun x -> x.gb_types) (L.unloc id) env with
| Some alias ->
rs_tyerror ~loc:(L.loc id) (DuplicateAlias (L.unloc id, (L.mk_loc (L.loc id) ty) ,alias) )
| None ->
let ty = L.mk_loc (L.loc id) ty in
let doit v = {v with gb_types = Map.add (L.unloc id) ty v.gb_types }
in let binds =
match env.e_bindings with
| ([],gb) -> [],doit gb
| ((ns,gb):: stack, glob) -> (ns,doit gb):: stack , glob
in
{env with e_bindings = binds}
let get (env: 'asm env) (id: A.pident) : P.epty L.located =
let typea = find (fun b -> b.gb_types) (L.unloc id) env in
match typea with
| None ->
rs_tyerror ~loc:(L.loc id) (TypeNotFound (L.unloc id))
| Some e -> e
end
module Funs = struct
let find (x : A.symbol) (env : 'asm env) =
find (fun b -> b.gb_funs) x env
let push env (v : (unit, 'asm) P.pfunc) rty =
let name = v.P.f_name.P.fn_name in
let v = { v with P.f_name = P.F.mk (fully_qualified (fst env.e_bindings) name) } in
match find name env with
| None ->
let doit m =
{ m with gb_funs = Map.add name (v, rty) m.gb_funs }
in
let e_bindings =
match env.e_bindings with
| [], bot -> [], doit bot
| (ns, top) :: stack, bot ->
(ns, doit top) :: stack, bot
in
{ env with e_bindings; e_decls = P.MIfun v :: env.e_decls }
| Some fd ->
err_duplicate_fun name (v, ()) fd
end
module Exec = struct
let push loc f m env = { env with e_exec = L.mk_loc loc (f, m) :: env.e_exec }
let get env = List.rev env.e_exec
end
end
let tt_pointer dfl_writable (p:S.ptr) : W.reference =
match p with
| `Pointer (Some `Writable) -> W.Pointer W.Writable
| `Pointer (Some `Constant) -> W.Pointer W.Constant
| `Pointer None ->
W.Pointer (if dfl_writable then W.Writable else W.Constant)
| `Direct -> W.Direct
let tt_reg_kind annot =
match Annot.ensure_uniq1 "mmx" Annot.none annot with
| Some () -> W.Extra
| None -> W.Normal
let tt_sto regkind dfl_writable (sto : S.pstorage) : W.v_kind =
match sto with
| `Inline -> W.Inline
| `Reg p -> W.Reg (regkind, tt_pointer dfl_writable p)
| `Stack p -> W.Stack (tt_pointer dfl_writable p)
| `Global -> W.Global
type tt_mode = [
| `AllVar
| `OnlyParam
| `NoParam
]
let tt_var_core (mode:tt_mode) (env : 'asm Env.env) { L.pl_desc = x; L.pl_loc = lc; } =
let v, _, _ as vs =
match Env.Vars.find x env with
| Some vs -> vs
| None -> rs_tyerror ~loc:lc (UnknownVar x) in
begin match mode with
| `OnlyParam ->
if v.P.v_kind <> W.Const then
rs_tyerror ~loc:lc (StringError "only param variables are allowed here")
| `NoParam ->
if v.P.v_kind = W.Const then
rs_tyerror ~loc:lc (StringError "param variables are not allowed here")
| `AllVar -> ()
end;
vs
let tt_var (mode:tt_mode) (env : 'asm Env.env) x =
let v, ty, s = tt_var_core mode env x in
if s = Sglob then
rs_tyerror ~loc:(L.loc x) (StringError "global variables are not allowed here");
v, ty
let tt_var_global (mode:tt_mode) (env : 'asm Env.env) v =
let lc = v.L.pl_loc in
let x, ty, s = tt_var_core mode env v in
{ P.gv = L.mk_loc lc x; P.gs = s }, ty
let tt_fun (env : 'asm Env.env) { L.pl_desc = x; L.pl_loc = loc; } =
Env.Funs.find x env |> oget ~exn:(tyerror ~loc (UnknownFun x))
let check_ty_eq ~loc ~(from : P.epty) ~(to_ : P.epty) =
if not (P.epty_equal from to_) then
match from, to_ with
| ETarr _, ETarr _ -> ()
| _, _ -> rs_tyerror ~loc (TypeMismatch (from, to_))
let check_ty_ptr pd ~loc ty =
check_ty_eq ~loc ~from:ty ~to_:(P.etw pd)
let check_ty_bool ~loc ty =
check_ty_eq ~loc ~from:ty ~to_:P.etbool
let check_return_statement ~loc name (declared : P.epty list) (given : (L.t * P.epty) list) : unit =
let given_size = List.length given in
let declared_size = List.length declared in
if Stdlib.Int.equal 0 given_size
then
(if not (Stdlib.Int.equal 0 declared_size)
then rs_tyerror ~loc (NoReturnStatement (name, declared_size)))
else
if not (Stdlib.Int.equal given_size declared_size)
then rs_tyerror ~loc:(loc_of_tuples loc (List.rev_map fst given)) (InvalidReturnStatement (name, given_size, declared_size));
List.iter2
(fun ty1 (loc, ty2) -> check_ty_eq ~loc ~from:ty2 ~to_:ty1)
declared given
let check_return_storage ~loc fname =
List.iter2 (
fun sto (y:'len P.gvar_i) ->
match sto, (L.unloc y).v_kind with
| `Inline, W.Inline -> ()
| `Reg ptr, W.Reg (_, ref) | `Stack ptr, W.Stack ref -> (
match ptr, ref with
| `Pointer (Some `Writable), W.Pointer W.Writable
| `Pointer (Some `Constant), W.Pointer W.Constant
| `Pointer None, W.Pointer _
| `Direct, W.Direct -> ()
| `Pointer (Some `Writable), (W.Pointer W.Constant | W.Direct)
| `Pointer (Some `Constant), (W.Pointer W.Writable | W.Direct)
| `Pointer None, W.Direct
| `Direct, W.Pointer _
-> rs_tyerror ~loc (InvalidSignatureStorage(fname, sto, (L.unloc y).v_name, (L.unloc y).v_kind))
)
| _ , W.Global -> assert false
| `Global , _ -> assert false
| `Reg _, (W.Stack _ | W.Inline | W.Const)
| `Stack _, (W.Reg _ | W.Inline | W.Const)
| `Inline, (W.Reg _ | W.Stack _ | W.Const)
-> rs_tyerror ~loc (InvalidSignatureStorage(fname, sto, (L.unloc y).v_name,(L.unloc y).v_kind))
)
let check_sig_lvs loc sig_ lvs =
let loc () = loc_of_tuples loc (List.map (fun (l,_,_) -> l) lvs) in
let nsig_ = List.length sig_ in
let nlvs = List.length lvs in
if nlvs <> nsig_ then
rs_tyerror ~loc:(loc ()) (InvalidLvalCount(nlvs, nsig_));
List.iter2
(fun ty (loc, _, lty) -> lty
|> Option.may (fun lty -> check_ty_eq ~loc ~from:ty ~to_:lty))
sig_ lvs;
List.map2 (fun ty (_,flv,_) -> flv ty) sig_ lvs
let tt_sign = function
| `Signed -> W.Signed
| `Unsigned -> W.Unsigned
let tt_as_array ((loc, ty) : L.t * P.epty) : P.epty * P.pexpr_ =
match ty with
| ETarr (ws, n) -> P.etw ws, n
| _ -> rs_tyerror ~loc (InvalidArrayType ty)
let wsize_le = Utils0.cmp_le W.wsize_cmp
let wsize_min = Utils0.cmp_min W.wsize_cmp
let wsize_max s1 s2 = if wsize_le s1 s2 then s2 else s1
let max_ty ty1 ty2 =
if P.epty_equal ty1 ty2 then Some ty1 else
match ty1, ty2 with
| ETint, ETword _ -> Some ty2
| ETword _, ETint -> Some ty1
| ETword(None, w1), ETword(None, w2) ->
Some(ETword(None, Utils0.cmp_min W.wsize_cmp w1 w2))
| ETword(Some _b, w1), ETword(Some _b2, _w2) -> None
| _, _ -> None
let tt_vsize_op loc op (vs:S.vsize) (ve:S.vesize) =
match vs, ve with
| `V16, `W8 -> W.VE8 , W.U128
| `V8 , `W16 -> W.VE16, W.U128
| `V4 , `W32 -> W.VE32, W.U128
| `V2 , `W64 -> W.VE64, W.U128
| `V32, `W8 -> W.VE8 , W.U256
| `V16, `W16 -> W.VE16, W.U256
| `V8 , `W32 -> W.VE32, W.U256
| `V4 , `W64 -> W.VE64, W.U256
| _ , _ -> rs_tyerror ~loc (InvalidOperator op)
type word_kind =
| Word
| WInt
type eop_kind =
| EOp_int
| EOp_w of word_kind * W.wsize
type ty_op_kind =
| OpKE of W.signedness * eop_kind
| OpKV of W.signedness * W.velem * W.wsize
let check_osign exn os (s:W.signedness) =
match os with
| None -> ()
| Some s' -> if s <> s' then raise exn
type op_ok_on = {
intok : bool;
wintok : bool;
}
let op_info_dfl exn ty s ((o_ok : op_ok_on), (minws, maxws)) =
match ty with
| P.ETword (None, ws) ->
let ws = wsize_max minws ws in
let ws = wsize_min ws maxws in
let s = Option.default W.Unsigned s in
OpKE (s, EOp_w (Word, ws))
| P.ETword (Some s', ws) ->
if not (o_ok.wintok) then raise exn;
let ws = wsize_max minws ws in
let ws = wsize_min ws maxws in
check_osign exn s s';
OpKE (s', EOp_w (WInt, ws))
| _ ->
if not (o_ok.intok) then raise exn;
let s = Option.default W.Unsigned s in
OpKE (s, EOp_int)
let check_size_op loc op sz (min, max) =
if not (wsize_le min sz && wsize_le sz max) then
rs_tyerror ~loc (InvalidOperator op)
let check_op_w loc op ty s (o_ok, cmp) =
match ty with
| None, ws ->
check_size_op loc op ws cmp;
let s = Option.default W.Unsigned s in
OpKE (s, EOp_w (Word, ws))
| Some s', ws ->
if not (o_ok.wintok) then rs_tyerror ~loc (InvalidOperator op);
check_osign (tyerror ~loc (InvalidOperator op)) s s';
OpKE (s', EOp_w (WInt, ws))
let check_op_vec loc op cmp sz =
match cmp with
| None -> rs_tyerror ~loc (InvalidOperator op)
| Some (min, max) ->
if not (wsize_le min sz && wsize_le sz max) then
rs_tyerror ~loc (InvalidOperator op)
let tt_osign = Option.map tt_sign
let tt_swsize (sz, sg) =
match sg with
| `Word _ -> P.etw sz
| `WInt s -> P.etwi (tt_sign s) sz
let tt_swsize_op (swz:S.swsize) =
let (ws, s) = swz in
match s with
| `Word s -> tt_osign s, (None, ws)
| `WInt s -> let s = tt_sign s in Some s, (Some s, ws)
let op_info exn op (s : W.signedness option) (castop:S.castop) ty ws_cmp vs_cmp =
match castop with
| None ->
op_info_dfl exn ty s ws_cmp
| Some c ->
let loc = L.loc c in
match L.unloc c with
| CSS swz ->
let s1, ty = tt_swsize_op swz in
let s =
match s, s1 with
| Some s, Some s1 -> if s = s1 then Some s else rs_tyerror ~loc (InvalidOperator op)
| Some _, None -> s
| None, Some _ -> s1
| None, None -> None
in
check_op_w loc op ty s ws_cmp
| CVS(vs,s,ve) ->
let s = tt_sign s in
let ve, ws = tt_vsize_op loc op vs ve in
check_op_vec loc op vs_cmp (W.wsize_of_velem ve);
OpKV(s, ve, ws)
type 'o op_info = {
opi_op : ty_op_kind -> 'o;
opi_wcmp : op_ok_on * (W.wsize * W.wsize);
opi_vcmp : (W.wsize * W.wsize) option;
}
let cmp_8_64 = (W.U8, W.U64)
let cmp_8_256 = (W.U8, W.U256)
let mk_op_kind eop vop = function
| OpKE(s, k) -> eop s k
| OpKV(s, ve, ws) -> vop s ve ws
let mk_op_s_k_info eop =
{ opi_op = mk_op_kind eop (fun _ _ _ -> assert false)
; opi_wcmp = {intok = true; wintok = true}, cmp_8_256
; opi_vcmp = None }
let mk_op_k_info eop vop =
{ opi_op = mk_op_kind (fun s k -> eop s k) vop
; opi_wcmp = {intok = true; wintok = true}, cmp_8_256
; opi_vcmp = Some cmp_8_64 }
let mk_op_k_info_no_vec eop =
{ opi_op = mk_op_kind (fun s k -> eop s k) (fun _ _ _ -> assert false)
; opi_wcmp = {intok = true; wintok = true}, cmp_8_256
; opi_vcmp = None }
let mk_logic_ws eop = function
| OpKE (_, EOp_w (Word, ws))
| OpKV (_,_, ws) -> eop ws
| _ -> assert false
let mk_logic_info eop =
{ opi_op = mk_logic_ws eop;
opi_wcmp = {intok = false; wintok = false}, cmp_8_256;
opi_vcmp = Some (cmp_8_64); }
let mk_rot_info eop =
{ opi_op = mk_logic_ws eop;
opi_wcmp = {intok = false; wintok = false}, cmp_8_256;
opi_vcmp = None; }
let op1_of_ty exn op castop ty (info:E.sop1 op_info) =
let tok = op_info exn (`Op1 op) None castop ty info.opi_wcmp info.opi_vcmp in
info.opi_op tok
let lnot_info = mk_logic_info (fun ws -> E.Olnot ws)
let mk_op1 op_k op_wi s = function
| EOp_int -> op_k E.Op_int
| EOp_w (Word, sz) -> op_k (E.Op_w sz)
| EOp_w (WInt, sz) -> E.Owi1 (s, op_wi sz)
let neg_info =
mk_op_k_info_no_vec (mk_op1 (fun k -> E.Oneg k) (fun sz -> E.WIneg sz))
let mk_op2 op_k op_wi s = function
| EOp_int -> op_k s E.Op_int
| EOp_w (Word, sz) -> op_k s (E.Op_w sz)
| EOp_w (WInt, sz) -> E.Owi2 (s, sz, op_wi)
let add_info : E.sop2 op_info =
mk_op_k_info (mk_op2 (fun _ k -> E.Oadd k) E.WIadd) (fun _s ve ws -> E.Ovadd(ve,ws))
let sub_info =
mk_op_k_info (mk_op2 (fun _ k -> E.Osub k) E.WIsub) (fun _s ve ws -> E.Ovsub(ve,ws))
let mul_info =
mk_op_k_info (mk_op2 (fun _ k -> E.Omul k) E.WImul) (fun _s ve ws -> E.Ovmul(ve,ws))
let div_info = mk_op_s_k_info (mk_op2 (fun s k -> E.Odiv(s, k)) E.WIdiv)
let mod_info = mk_op_s_k_info (mk_op2 (fun s k -> E.Omod(s, k)) E.WImod)
let land_info = mk_logic_info (fun k -> E.Oland k)
let lor_info = mk_logic_info (fun k -> E.Olor k)
let lxor_info = mk_logic_info (fun k -> E.Olxor k)
let shr_info =
mk_op_k_info
(mk_op2
(fun s k ->
match k with
| E.Op_int -> E.Oasr k
| E.Op_w ws -> if s = W.Unsigned then E.Olsr ws else E.Oasr k) E.WIshr)
(fun s ve ws -> if s = W.Unsigned then E.Ovlsr(ve,ws) else E.Ovasr(ve,ws))
let shl_info =
mk_op_k_info (mk_op2 (fun _ k -> E.Olsl k) E.WIshl) (fun _s ve ws -> E.Ovlsl(ve,ws))
let ror_info = mk_rot_info (fun ws -> E.Oror ws)
let rol_info = mk_rot_info (fun ws -> E.Orol ws)
let eq_info = mk_op_k_info_no_vec (mk_op2 (fun _s k -> E.Oeq k) E.WIeq)
let neq_info = mk_op_k_info_no_vec (mk_op2 (fun _s k -> E.Oneq k) E.WIneq)
let cmp_of_op_k s = function
| E.Op_int -> E.Cmp_int
| E.Op_w sz -> E.Cmp_w(s, sz)
let lt_info = mk_op_k_info_no_vec (mk_op2 (fun s k -> E.Olt (cmp_of_op_k s k)) E.WIlt)
let le_info = mk_op_k_info_no_vec (mk_op2 (fun s k -> E.Ole (cmp_of_op_k s k)) E.WIle)
let gt_info = mk_op_k_info_no_vec (mk_op2 (fun s k -> E.Ogt (cmp_of_op_k s k)) E.WIgt)
let ge_info = mk_op_k_info_no_vec (mk_op2 (fun s k -> E.Oge (cmp_of_op_k s k)) E.WIge)
let op2_of_ty exn op s castop ty (info:E.sop2 op_info) =
let tok = op_info exn (`Op2 op) s castop ty info.opi_wcmp info.opi_vcmp in
info.opi_op tok
let ensure_word exn ty = (max_ty ty (P.etw U256) |> oget ~exn)
let op2_of_pop2 exn ty (op : S.peop2) =
match op with
| `And -> E.Oand
| `Or -> E.Oor
| `Add c -> op2_of_ty exn op None c ty add_info
| `Sub c -> op2_of_ty exn op None c ty sub_info
| `Mul c -> op2_of_ty exn op None c ty mul_info
| `Div(s, c) -> op2_of_ty exn op (tt_osign s) c ty div_info
| `Mod(s, c) -> op2_of_ty exn op (tt_osign s) c ty mod_info
| `BAnd c -> op2_of_ty exn op None c (ensure_word exn ty) land_info
| `BOr c -> op2_of_ty exn op None c (ensure_word exn ty) lor_info
| `BXOr c -> op2_of_ty exn op None c (ensure_word exn ty) lxor_info
| `ShR(s, c) -> op2_of_ty exn op (tt_osign s) c ty shr_info
| `ShL c -> op2_of_ty exn op None c ty shl_info
| `ROR c -> op2_of_ty exn op None c ty ror_info
| `ROL c -> op2_of_ty exn op None c ty rol_info
| `Eq c -> op2_of_ty exn op None c ty eq_info
| `Neq c -> op2_of_ty exn op None c ty neq_info
| `Lt(s, c) -> op2_of_ty exn op (tt_osign s) c ty lt_info
| `Le(s, c) -> op2_of_ty exn op (tt_osign s) c ty le_info
| `Gt(s, c) -> op2_of_ty exn op (tt_osign s) c ty gt_info
| `Ge(s, c) -> op2_of_ty exn op (tt_osign s) c ty ge_info
let op1_of_pop1 exn ty (op: S.peop1) =
match op with
| `Cast _ -> assert false
| `Not c ->
if ty = P.etbool then
if c <> None then raise exn
else E.Onot
else
op1_of_ty exn op c (ensure_word exn ty) lnot_info
| `Neg c -> op1_of_ty exn op c ty neg_info
let peop2_of_eqop (eqop : S.peqop) =
match eqop with
| `Raw -> None
| `Add s -> Some (`Add s)
| `Sub s -> Some (`Sub s)
| `Mul s -> Some (`Mul s)
| `Div s -> Some (`Div s)
| `Mod s -> Some (`Mod s)
| `ShR s -> Some (`ShR s)
| `ROR s -> Some (`ROR s)
| `ROL s -> Some (`ROL s)
| `ShL s -> Some (`ShL s)
| `BAnd s -> Some (`BAnd s)
| `BXOr s -> Some (`BXOr s)
| `BOr s -> Some (`BOr s)
let wk_s_ws (s: W.signedness option) (ws: W.wsize) =
let wk = if s = None then Word else WInt in
let s = Option.default W.Unsigned s in
(wk, s, ws)
let op_word_of_int (wk, s, ws) =
match wk with
| Word -> E.Oword_of_int ws
| WInt -> E.Owi1(s, E.WIwint_of_int ws)
let op_int_of_word (wk, s, ws) =
match wk with
| Word -> E.Oint_of_word (s, ws)
| WInt -> E.Owi1(s, E.WIint_of_wint ws)
let cast loc e ety ty =
match ety, ty with
| P.ETint, P.ETword(s,ws) ->
let op = op_word_of_int (wk_s_ws s ws) in
P.Papp1(op, e)
| P.ETword(s, ws), P.ETint ->
let op = op_int_of_word (wk_s_ws s ws) in
P.Papp1(op, e)
| P.ETword(None, w1), P.ETword(None, w2) when W.wsize_cmp w1 w2 <> Datatypes.Lt -> e
| P.ETword(Some W.Unsigned, w1), P.ETword(Some W.Unsigned, w2) when W.wsize_cmp w1 w2 <> Datatypes.Lt -> e
| _, _ when P.epty_equal ety ty -> e
| P.ETarr _, P.ETarr _ -> e
| _ -> rs_tyerror ~loc (InvalidCast(ety,ty))
let cast_int loc os e ety =
match ety with
| P.ETint -> e
| P.ETword (s, ws) ->
let wk, s, ws = wk_s_ws s ws in
let s =
match wk, os with
| _, None ->
if wk = Word then
Utils.warning Deprecated (L.i_loc0 loc)
"Syntax (int)e when e has type %a is deprecated. Use (uint)e of (sint)e instead"
(fun fmt -> PrintCommon.pp_btype fmt) (P.U ws);
s
| Word, Some s -> tt_sign s
| WInt, Some s' ->
if tt_sign s' <> s then rs_tyerror ~loc (InvalidCast(ety,P.etint));
s
in
let op = op_int_of_word(wk, s, ws) in
P.Papp1(op, e)
| _ -> rs_tyerror ~loc (InvalidCast(ety,P.etint))
let conv_ty : BinNums.positive T.extended_type -> P.epty = function
| T.ETbool -> P.etbool
| T.ETint -> P.etint
| T.ETword(s,ws) -> P.ETword(s,ws)
| T.ETarr p -> P.ETarr (U8, PE (P.icnst (Conv.int_of_pos p)))
let conv_cty : T.stype -> P.epty = function
| T.Coq_sbool -> P.etbool
| T.Coq_sint -> P.etint
| T.Coq_sword ws -> P.etw ws
| T.Coq_sarr p -> P.ETarr (U8, PE (P.icnst (Conv.int_of_pos p)))
let type_of_op2 op =
let (ty1, ty2), tyo = E.etype_of_op2 op in
conv_ty ty1, conv_ty ty2, conv_ty tyo
let tt_op2 (loc1, (e1, ety1)) (loc2, (e2, ety2))
{ L.pl_desc = pop; L.pl_loc = loc } =
match pop with
| `Eq None when ety1 = P.etbool && ety2 = P.etbool ->
P.Papp2(E.Obeq, e1, e2), P.etbool
| `Neq None when ety1 = P.etbool && ety1 = P.etbool ->
P.Papp1 (E.Onot, P.Papp2(E.Obeq, e1, e2)), P.etbool
| _ ->
let exn = tyerror ~loc (NoOperator (`Op2 pop, [ety1; ety2])) in
let ty =
match pop with
| `And | `Or -> P.etbool
| `ShR _ | `ShL _ | `ROR _ | `ROL _ -> ety1
| `Add _ | `Sub _ | `Mul _ | `Div _ | `Mod _
| `BAnd _ | `BOr _ | `BXOr _
| `Eq _ | `Neq _ | `Lt _ | `Le _ | `Gt _ | `Ge _ ->
max_ty ety1 ety2 |> oget ~exn in
let op = op2_of_pop2 exn ty pop in
let ty1, ty2, tyo = type_of_op2 op in
let e1 = cast loc1 e1 ety1 ty1 in
let e2 = cast loc2 e2 ety2 ty2 in
P.Papp2(op, e1, e2), tyo
let type_of_op1 op =
let ty, tyo = E.etype_of_op1 op in
conv_ty ty, conv_ty tyo
let tt_op1 (loc1, (e1, ety1)) { L.pl_desc = pop; L.pl_loc = loc } =
let exn = tyerror ~loc (NoOperator (`Op1 pop, [ety1])) in
let ty = ety1 in
let op = op1_of_pop1 exn ty pop in
let ty1, tyo = type_of_op1 op in
let e1 = cast loc1 e1 ety1 ty1 in
P.Papp1(op, e1), tyo
let wsize_of_bits ~loc =
function
| 8 -> W.U8
| 16 -> W.U16
| 32 -> W.U32
| 64 -> W.U64
| 128 -> W.U128
| 256 -> W.U256
| n -> rs_tyerror ~loc (PackWrongWS n)
let pelem_of_bits ~loc =
function
| 1 -> W.PE1
| 2 -> W.PE2
| 4 -> W.PE4
| 8 -> W.PE8
| 16 -> W.PE16
| 32 -> W.PE32
| 64 -> W.PE64
| 128 -> W.PE128
| n -> rs_tyerror ~loc (PackWrongPE n)
let tt_pack ~loc nb es =
let n1 = S.int_of_vsize nb in
let n2 = S.bits_of_vesize es in
wsize_of_bits ~loc (n1 * n2), pelem_of_bits ~loc n2, n1
let combine_flags =
List.map (fun c -> Printer.string_of_combine_flags c, c)
[E.CF_LT Signed; E.CF_LT Unsigned;
E.CF_LE Signed; E.CF_LE Unsigned;
E.CF_EQ; E.CF_NEQ;
E.CF_GE Signed; E.CF_GE Unsigned;
E.CF_GT Signed; E.CF_GT Unsigned]
let is_combine_flags id =
List.mem_assoc (L.unloc id) combine_flags
let tt_al aa =
let open Memory_model in
function
| None -> (match aa with Warray_.AAdirect -> Unaligned | AAscale -> Aligned)
| Some `Unaligned -> Unaligned
| Some `Aligned -> Aligned
let ignore_align ~loc =
function
| None -> ()
| Some _al ->
warning Always (L.i_loc0 loc) "ignored alignment annotation in array slice"
let tt_mem_wsize dfl (ct : S.swsize L.located option) =
match ct with
| None -> dfl
| Some ct ->
match L.unloc ct with
| (_, `WInt _) as a->
rs_tyerror ~loc:(L.loc ct)
(StringError ("invalid cast annotation "^(S.string_of_swsize_ty a)))
| (ws, `Word _) -> ws
let rec tt_expr pd ?(mode=`AllVar) (env : 'asm Env.env) pe =
match L.unloc pe with
| S.PEParens pe ->
tt_expr ~mode pd env pe
| S.PEBool b ->
P.Pbool b, P.etbool
| S.PEInt i ->
P.Pconst (S.parse_int i), P.etint
| S.PEVar x ->
let x, ty = tt_var_global mode env x in
P.Pvar x, ty
| S.PEFetch me ->
let ct, _eloc, e, al = tt_mem_access ~mode pd env me in
P.Pload (al, ct, e), P.etw ct
| S.PEGet (al, aa, ws, ({ L.pl_loc = xlc } as x), pi, olen) ->
let x, ty = tt_var_global mode env x in
let ty, _ = tt_as_array (xlc, ty) in
let ws = tt_mem_wsize (P.ws_of_ety ty) ws in
let ty = P.etw ws in
let i,ity = tt_expr ~mode pd env pi in
let i = cast_int (L.loc pi) (Some `Unsigned) i ity in
begin match olen with
| None ->
let al = tt_al aa al in
P.Pget (al, aa, ws, x, i), ty
| Some plen ->
ignore_align ~loc:(L.loc pe) al;
let len,ity = tt_expr ~mode:`OnlyParam pd env plen in
check_ty_eq ~loc:(L.loc plen) ~from:ity ~to_:P.etint;
let ty = P.ETarr (ws, P.PE len) in
P.Psub (aa, ws, P.PE len, x, i), ty
end
| S.PEOp1 (op, pe) ->
let e, ety = tt_expr ~mode pd env pe in
begin match op with
| `Cast (`ToInt s) ->
let e = cast_int (L.loc pe) s e ety in
e, P.etint
| `Cast (`ToWord (sz, sg)) ->
let rty = tt_swsize (sz, sg) in
let e =
match sg, ety with
| `Word s, P.ETword(None, ws) ->
if W.wsize_cmp ws sz <> Datatypes.Lt then e
else
let s = Option.default W.Unsigned (tt_osign s) in
let op = if s = W.Unsigned then E.Ozeroext(sz, ws) else E.Osignext(sz, ws) in
P.Papp1(op, e)
| `Word s, P.ETword(Some s', ws) ->
if W.wsize_cmp ws sz <> Datatypes.Eq then
rs_tyerror ~loc:(L.loc pe) (InvalidCast(ety,rty));
Papp1(E.Owi1(s', E.WIword_of_wint ws), e)
| `Word s, P.ETint ->
Papp1(E.Oword_of_int sz, e)
| `WInt s, P.ETword(None, ws) ->
let s = tt_sign s in
Papp1(E.Owi1 (s, E.WIwint_of_word ws), e)
| `WInt s, P.ETword (Some s', ws) ->
let s = tt_sign s in
if s = s' then
if s = W.Unsigned && W.wsize_cmp ws sz <> Datatypes.Lt then e
else P.Papp1(E.Owi1(s, E.WIwint_ext(sz, ws)), e)
else
rs_tyerror ~loc:(L.loc pe) (InvalidCast(ety,rty))
| `WInt s, P.ETint ->
let s = tt_sign s in
Papp1(E.Owi1(s, E.WIwint_of_int sz), e)
| _ -> rs_tyerror ~loc:(L.loc pe) (InvalidCast(ety,rty))
in
e, rty
| _ ->
let et1 = tt_expr ~mode pd env pe in
tt_op1 (L.loc pe, et1) (L.mk_loc (L.loc pe) op)
end
| S.PEOp2 (pop, (pe1, pe2)) ->
let et1 = tt_expr ~mode pd env pe1 in
let et2 = tt_expr ~mode pd env pe2 in
tt_op2 (L.loc pe1, et1) (L.loc pe2, et2) (L.mk_loc (L.loc pe) pop)
| S.PECombF(id, args) ->
begin match List.assoc (L.unloc id) combine_flags with
| c ->
let nexp = List.length Expr.tin_combine_flags in
let nargs = List.length args in
if nargs <> nexp then
rs_tyerror ~loc:(L.loc pe) (InvalidArgCount(nargs, nexp));
let tt_expr pe =
let e, ety = tt_expr ~mode pd env pe in
check_ty_eq ~loc:(L.loc pe) ~from:ety ~to_:P.etbool;
e in
let args = List.map tt_expr args in
P.PappN (E.Ocombine_flags c, args), P.etbool
| exception Not_found -> assert false
end
| S.PECall (id, args) when is_combine_flags id ->
tt_expr ~mode pd env (L.mk_loc (L.loc pe) (S.PECombF(id,args)))
| S.PECall _ ->
rs_tyerror ~loc:(L.loc pe) CallNotAllowed
| S.PEPrim _ ->
rs_tyerror ~loc:(L.loc pe) PrimNotAllowed
| S.PEpack ((nb, sg, es), args) ->
let loc = L.loc pe in
if sg <> `Unsigned then rs_tyerror ~loc PackSigned;
let sz, pz, len = tt_pack ~loc nb es in
let args = List.map (tt_expr ~mode pd env) args in
let args = List.map (fun (a, ty) -> cast_int loc (Some sg) a ty) args in
let alen = List.length args in
if alen <> len then rs_tyerror ~loc (PackWrongLength (len, alen));
P.PappN (E.Opack (sz, pz), args), P.etw sz
| S.PEIf (pe1, pe2, pe3) ->
let e1, ty1 = tt_expr ~mode pd env pe1 in
let e2, ty2 = tt_expr ~mode pd env pe2 in
let e3, ty3 = tt_expr ~mode pd env pe3 in
check_ty_bool ~loc:(L.loc pe1) ty1;
let ty = max_ty ty2 ty3 |> oget ~exn:(tyerror ~loc:(L.loc pe) (TypeMismatch (ty2, ty3))) in
P.Pif(P.gty_of_gety ty, e1, e2, e3), ty
and tt_expr_cast pd ?(mode=`AllVar) (env : 'asm Env.env) pe ty =
let e, ety = tt_expr ~mode pd env pe in
cast (L.loc pe) e ety ty
and tt_mem_access pd ?(mode=`AllVar) (env : 'asm Env.env)
(al, ct, e) =
let loc = L.loc e in
let e = tt_expr_cast ~mode pd env e (P.etw pd) in
let ct = tt_mem_wsize pd ct in
let al = tt_al AAdirect al in
(ct, loc, e, al)
and tt_type pd (env : 'asm Env.env) (pty : S.ptype) : P.epty =
match L.unloc pty with
| S.TBool -> P.etbool
| S.TInt -> P.etint
| S.TWord ws -> tt_swsize ws
| S.TArray (ws, e) ->
let loc, id, ety =
match ws with
| TypeWsize ws -> L.loc pty, None, tt_swsize ws
| TypeSizeAlias id ->
let ty = Env.TypeAlias.get env id in
L.loc id, Some (L.mk_loc (L.loc ty) (L.unloc id)), L.unloc ty in
let ws =
match ety with
| P.ETword(None, ws) -> ws
| ty -> rs_tyerror ~loc (InvalidTypeAlias (id,ty))
in P.ETarr (ws, P.PE (fst (tt_expr ~mode:`OnlyParam pd env e)))
| S.TAlias id -> L.unloc (Env.TypeAlias.get env id)
let tt_exprs pd (env : 'asm Env.env) es = List.map (tt_expr ~mode:`AllVar pd env) es
let tt_expr_bool pd env pe = tt_expr_cast pd env pe P.etbool
let tt_expr_int pd env pe = tt_expr_cast pd env pe P.etint
let mk_var x sto xety xlc annot =
let annot =
match xety with
| P.ETword(Some s, ws) ->
let s = if s = W.Signed then Annotations.sint else Annotations.uint in
Annotations.add_symbol ~loc:xlc s annot
| _ -> annot
in
P.PV.mk x sto (P.gty_of_gety xety) xlc annot
let tt_vardecl dfl_writable pd (env : 'asm Env.env) ((annot, (sto, xty)), x) =
let { L.pl_desc = x; L.pl_loc = xlc; } = x in
let regkind = tt_reg_kind annot in
let (sto, xety) = (tt_sto regkind (dfl_writable x) sto, tt_type pd env xty) in
let x = mk_var x sto xety xlc annot in
if P.is_ptr sto && not (P.is_ty_arr x.v_ty) then
rs_tyerror ~loc:xlc PtrOnlyForArray;
L.mk_loc xlc (x, xety)
let tt_vardecls_push dfl_writable pd (env : 'asm Env.env) pxs =
let xs = List.map (tt_vardecl dfl_writable pd env) pxs in
let env =
List.fold_left (fun env x -> Env.Vars.push_local env (L.unloc x)) env xs in
(env, xs)
let tt_param pd (env : 'asm Env.env) _loc (pp : S.pparam) : 'asm Env.env =
let ty = tt_type pd env pp.ppa_ty in
let pe, ety = tt_expr ~mode:`OnlyParam pd env pp.S.ppa_init in
check_ty_eq ~loc:(L.loc pp.ppa_init) ~from:ty ~to_:ety;
let x = mk_var (L.unloc pp.ppa_name) W.Const ty (L.loc pp.ppa_name) [] in
let env = Env.Vars.push_param env (x,ety, pe) in
env
let tt_lvalue pd (env : 'asm Env.env) { L.pl_desc = pl; L.pl_loc = loc; } =
let reject_constant_pointers loc x =
match x.P.v_kind with
| Stack (Pointer Constant) | Reg (_, Pointer Constant) ->
warning PedanticPretyping (L.i_loc0 loc) "Cannot write to the constant pointer %s" x.P.v_name
| _ -> ()
in
match pl with
| S.PLIgnore ->
loc, (fun ety -> P.Lnone(loc, P.gty_of_gety ety)) , None
| S.PLVar x ->
let x, xty = tt_var `NoParam env x in
loc, (fun _ -> P.Lvar (L.mk_loc loc x)), Some xty
| S.PLArray (al, aa, ws, ({ pl_loc = xlc } as x), pi, olen) ->
let x, xty = tt_var `NoParam env x in
reject_constant_pointers xlc x ;
let ty,_ = tt_as_array (xlc, xty) in
let ws = tt_mem_wsize (P.ws_of_ety ty) ws in
let ty = P.etw ws in
let i,ity = tt_expr ~mode:`AllVar pd env pi in
let i = cast_int (L.loc pi) (Some `Unsigned) i ity in
begin match olen with
| None ->
let al = tt_al aa al in
loc, (fun _ -> P.Laset (al, aa, ws, L.mk_loc xlc x, i)), Some ty
| Some plen ->
ignore_align ~loc al;
let len,ity = tt_expr ~mode:`OnlyParam pd env plen in
check_ty_eq ~loc:(L.loc plen) ~from:ity ~to_:P.etint;
let ty = P.ETarr(ws, P.PE len) in
loc, (fun _ -> P.Lasub (aa, ws, P.PE len, L.mk_loc xlc x, i)), Some ty
end
| S.PLMem me ->
let ct, eloc, e, al = tt_mem_access ~mode:`AllVar pd env me in
loc, (fun _ -> P.Lmem (al, ct, eloc, e)), Some (P.etw ct)
let prim_sig asmOp p : 'a P.gety list * 'a P.gety list * Sopn.arg_desc list =
let f t = conv_cty t in
let o = Sopn.asm_op_instr asmOp p in
List.map f o.tout,
List.map f o.tin,
o.i_out
let str : string * Sopn.prim_x86_suffix option =
let get_size =
let open Sopn in
function
| "8" -> PVp W.U8
| "16" -> PVp W.U16
| "32" -> PVp W.U32
| "64" -> PVp W.U64
| "128" -> PVp W.U128
| "256" -> PVp W.U256
| "u8" -> PVs (Unsigned, W.U8)
| "u16" -> PVs (Unsigned, W.U16)
| "u32" -> PVs (Unsigned, W.U32)
| "u64" -> PVs (Unsigned, W.U64)
| "u128" -> PVs (Unsigned, W.U128)
| "u256" -> PVs (Unsigned, W.U256)
| "s8" -> PVs (Signed, W.U8)
| "s16" -> PVs (Signed, W.U16)
| "s32" -> PVs (Signed, W.U32)
| "s64" -> PVs (Signed, W.U64)
| "s128" -> PVs (Signed, W.U128)
| "s256" -> PVs (Signed, W.U256)
| "2u8" -> PVsv (W.Unsigned, W.VE8, W.U16)
| "4u8" -> PVsv (W.Unsigned, W.VE8, W.U32)
| "2u16" -> PVsv (W.Unsigned, W.VE16, W.U32)
| "8u8" -> PVsv (W.Unsigned, W.VE8, W.U64)
| "4u16" -> PVsv (W.Unsigned, W.VE16, W.U64)
| "2u32" -> PVsv (W.Unsigned, W.VE32, W.U64)
| "1u64" -> PVsv (W.Unsigned, W.VE64, W.U64)
| "16u8" -> PVsv (W.Unsigned, W.VE8, W.U128)
| "8u16" -> PVsv (W.Unsigned, W.VE16, W.U128)
| "4u32" -> PVsv (W.Unsigned, W.VE32, W.U128)
| "2u64" -> PVsv (W.Unsigned, W.VE64, W.U128)
| "32u8" -> PVsv (W.Unsigned, W.VE8, W.U256)
| "16u16" -> PVsv (W.Unsigned, W.VE16, W.U256)
| "8u32" -> PVsv (W.Unsigned, W.VE32, W.U256)
| "4u64" -> PVsv (W.Unsigned, W.VE64, W.U256)
| "2s8" -> PVsv (W.Signed, W.VE8, W.U16)
| "4s8" -> PVsv (W.Signed, W.VE8, W.U32)
| "2s16" -> PVsv (W.Signed, W.VE16, W.U32)
| "8s8" -> PVsv (W.Signed, W.VE8, W.U64)
| "4s16" -> PVsv (W.Signed, W.VE16, W.U64)
| "2s32" -> PVsv (W.Signed, W.VE32, W.U64)
| "16s8" -> PVsv (W.Signed, W.VE8, W.U128)
| "8s16" -> PVsv (W.Signed, W.VE16, W.U128)
| "4s32" -> PVsv (W.Signed, W.VE32, W.U128)
| "2s64" -> PVsv (W.Signed, W.VE64, W.U128)
| "32s8" -> PVsv (W.Signed, W.VE8, W.U256)
| "16s16" -> PVsv (W.Signed, W.VE16, W.U256)
| "8s32" -> PVsv (W.Signed, W.VE32, W.U256)
| "4s64" -> PVsv (W.Signed, W.VE64, W.U256)
| s ->
let wsize_of_int = function
| 8 -> W.U8
| 16 -> W.U16
| 32 -> W.U32
| 64 -> W.U64
| 128 -> W.U128
| 256 -> W.U256
| _ -> raise Not_found in
try
Scanf.sscanf s "%c%u%c%u%!"
(fun c0 i c1 j ->
if not ((c0 = 'u' || c0 = 's') && (c1 = 'u' || c1 = 's')) then raise Not_found;
PVx(wsize_of_int i, wsize_of_int j))
with End_of_file | Scanf.Scan_failure _ -> raise Not_found
in
try
match List.rev (String.split_on_char '_' str) with
| [] -> str, None
| suf2 :: ((suf1 :: s) as tail) ->
let sz = get_size suf2 in
begin try match get_size suf1, sz with
| PVsv (_, ve1, sz1), PVsv (_, ve2, sz2) -> String.concat "_" (List.rev s), Some (PVvv (ve1, sz1, ve2, sz2))
| _, _ -> String.concat "_" (List.rev tail), Some sz
with Not_found -> String.concat "_" (List.rev tail), Some sz
end
| suf :: s ->
let sz = get_size suf in
String.concat "_" (List.rev s), Some sz
with Not_found -> str, None
let simplify_suffix ~loc =
let open Sopn in
let open PrintCommon in
function
| PVsv (_sg, ve, sz) -> Some (PVv (ve, sz), fun x -> x)
| PVv (ve, sz) -> Some (PVp sz, fun () ->
warning SimplifyVectorSuffix (L.i_loc0 loc) "vector suffix simplified from %s to %a"
(string_of_velem Unsigned sz ve) pp_wsize sz)
| _ -> None
let default_suffix =
function
| x :: _ -> x
| [] -> Sopn.PVp U8
(**
Deprecated intrinsic operators map (old name -> new name)
*)
let deprecated_intrinsic =
let m = Ms.empty in
Ms.add "VPMOVMSKB" "MOVEMASK" m
(**
Check if intrinsic opperator is deprecated and emit a warning if so.
*)
let check_deprecated_intrinsic (old_name: string) (loc:L.t) =
match Ms.find_opt old_name deprecated_intrinsic with
| None -> ()
| Some new_name ->
warning Deprecated (L.i_loc0 loc) "Intrinsic operator '%s' is deprecated. Please use '%s' instead." old_name new_name
let tt_prim asmOp id =
let { L.pl_loc = loc ; L.pl_desc = s } = id in
let name, sz = extract_size s in
check_deprecated_intrinsic name loc;
let c =
match List.assoc name asmOp.Sopn.prim_string with
| PrimX86 (valid_suffixes, preop) ->
begin match match sz with
| None -> default_suffix valid_suffixes |> preop
| Some sfx ->
let rec loop sfx =
if List.mem sfx valid_suffixes then preop sfx else
begin match simplify_suffix ~loc sfx with
| Some (sfx, w) -> w (); loop sfx
| None -> None end
in loop sfx
with | Some d -> d
| None -> rs_tyerror ~loc (PrimWrongSuffix (name, valid_suffixes))
end
| PrimARM _ | exception Not_found ->
let err msg = tyerror ~loc (UnknownPrim(s, msg)) in
Tt_arm_m4.tt_prim err asmOp.Sopn.prim_string name sz
in c
let prim_of_op exn loc o =
let bits_of_swsize : S.castop -> int option =
function
| None -> None
| Some({L.pl_desc = S.CVS _} ) -> raise exn
| Some({L.pl_desc = S.CSS(sz, `WInt _)}) -> raise exn
| Some({L.pl_desc = S.CSS(sz, _)}) ->
Some (Annotations.int_of_ws sz)
in
let p =
let f s n =
match bits_of_swsize s with
| None -> n
| Some b -> F.sprintf "%s_%d" n b
in
match o with
| `Add s -> f s "adc"
| `Sub s -> f s "sbb"
| `Mul s -> f s "mulu"
| _ -> raise exn in
L.mk_loc loc p
let prim_of_pe pe =
let loc = L.loc pe in
let exn = tyerror ~loc (Unsupported "can not recognize the primitive") in
match L.unloc pe with
| S.PEOp2 (o, (pe1, pe2)) ->
let desc =
match o with
| (`Add _ | `Sub _) as o1 ->
let check_size op s1 s2 =
match s1, s2 with
| None, _ -> Some (op s2)
| _, None -> Some (op s1)
| Some s1', Some s2' when s1' = s2' -> Some (op s1)
| _ -> None in
let check_op o1 o2 =
match o1, o2 with
| `Add s1, `Add s2 -> check_size (fun x -> `Add x) s1 s2
| `Sub s1, `Sub s2 -> check_size (fun x -> `Sub x) s1 s2
| _ -> None in
let o, pe1, pe2, pe3 =
match L.unloc pe1, L.unloc pe2 with
| S.PEOp2(o2, (pe1', pe3')), _ ->
begin match check_op o1 o2 with
| None -> o, pe1, pe2, L.mk_loc (L.loc pe2) (S.PEBool false)
| Some o -> o, pe1', pe3', pe2
end
| _, S.PEOp2(o2, (pe2', pe3')) ->
begin match check_op o1 o2 with
| None -> o, pe1, pe2, L.mk_loc (L.loc pe2) (S.PEBool false)
| Some o -> o, pe1, pe2', pe3'
end
| _, _ -> o, pe1, pe2, L.mk_loc (L.loc pe2) (S.PEBool false)
in
S.PEPrim(prim_of_op exn loc o, [pe1; pe2; pe3])
| _ ->
S.PEPrim(prim_of_op exn loc o, [pe1; pe2])
in
L.mk_loc (L.loc pe) desc
| _ -> raise exn
let cast_opn ~loc id ws =
let open Sopn in
let name fmt = Format.pp_print_string fmt (id.str ()) in
let invalid () = rs_tyerror ~loc (UnsupportedZeroExtend name) in
let open Arch_extra in
function
| Oasm (BaseOp (None, op)) ->
begin match List.last id.tout with
| Coq_sword from ->
if wsize_le ws from then rs_tyerror ~loc(InvalidZeroExtend (from, ws, name))
else Oasm (BaseOp (Some ws, op))
| _ -> invalid ()
end
| Oasm (BaseOp (Some _, _)) -> assert false
| _ -> invalid ()
let pexpr_of_plvalue exn l =
match L.unloc l with
| S.PLIgnore -> raise exn
| S.PLVar x -> L.mk_loc (L.loc l) (S.PEVar x)
| S.PLArray(al, aa,ws,x,e,len) -> L.mk_loc (L.loc l) (S.PEGet(al, aa,ws,x,e,len))
| S.PLMem(al,ty,e) -> L.mk_loc (L.loc l) (S.PEFetch(al,ty,e))
type ('a, 'b, 'c, 'd, 'e, 'f, 'g) arch_info = {
pd : Wsize.wsize;
asmOp : ('a, 'b, 'c, 'd, 'e, 'f, 'g) Arch_extra.extended_op Sopn.sopn Sopn.asmOp;
known_implicits : (CoreIdent.Name.t * string) list;
flagnames: CoreIdent.Name.t list;
}
let tt_lvalues arch_info env loc (pimp, pls) implicit tys =
let loc = loc_of_tuples loc (List.map P.L.loc pls) in
let combines =
[ "<s" , E.CF_LT Wsize.Signed
; "<u" , E.CF_LT Wsize.Unsigned
; "<=s", E.CF_LE Wsize.Signed
; "<=u", E.CF_LE Wsize.Unsigned
; "==" , E.CF_EQ
; "!=" , E.CF_NEQ
; ">=s", E.CF_GE Wsize.Signed
; ">=u", E.CF_GE Wsize.Unsigned
; ">s" , E.CF_GT Wsize.Signed
; ">u" , E.CF_GT Wsize.Unsigned ] in
let pls, pimp_c, implicits =
match pimp, implicit with
| None, _ -> pls, [], []
| Some pimp, None -> rs_tyerror ~loc:(L.loc pimp) (string_error "no implicit argument expected");
| Some pimp, Some implicit ->
let pimp = L.unloc pimp in
let arguments =
let open Sopn in
List.map
(function
| ADExplicit _ -> None
| ADImplicit v -> Some (Var0.Var.vname v).v_name)
implicit in
let iargs = List.pmap (Option.map String.uppercase_ascii) arguments in
let check (id, _) =
let loc = L.loc id in
let nid = L.unloc id in
let nID = String.uppercase_ascii nid in
if not (List.mem nID iargs || List.mem_assoc nid combines) then
rs_tyerror ~loc (string_error "unknown implicit label %s" nid) in
List.iter check pimp;
let pimp_c, pimp_f = List.partition (fun (id,_) -> List.mem_assoc (L.unloc id) combines) pimp in
let has_no_pimp = List.is_empty pimp_c in
let implicits = ref [] in
let get_implicit i =
let error loc =
rs_tyerror ~loc (string_error "an ident is expected (default is %s)" i) in
let mk loc s =
let s = L.mk_loc loc s in
implicits := (i, L.mk_loc loc (S.PEVar s)) :: !implicits;
L.mk_loc loc (S.PLVar s) in
let a =
Annot.ensure_uniq1 ~case_sensitive:false i (Annot.on_attribute ~on_empty:(fun loc nid () -> mk loc nid)
~on_id:(fun loc _nid s -> mk loc s)
error) pimp_f in
match a with
| Some a -> a
| None ->
let default = L.mk_loc loc S.PLIgnore in
if has_no_pimp then default else
try mk loc (List.assoc i (Env.get_known_implicits env))
with Not_found -> default in
let rec aux arguments pls =
match arguments, pls with
| [], _ -> pls
| None :: arguments, x :: pls -> x :: aux arguments pls
| None :: _, [] -> assert false
| Some i :: arguments, pls -> get_implicit i :: aux arguments pls in
let a = aux arguments pls in
a, pimp_c, !implicits
in
let ls = List.map (tt_lvalue arch_info.pd env) pls in
let ls = check_sig_lvs loc tys ls in
let li =
match pimp_c with
| [] -> []
| (id, _) :: _ ->
let loc = L.loc id in
let get_implicit i =
try List.assoc i implicits
with Not_found ->
rs_tyerror ~loc (string_error "implicit label %s need to be defined" i) in
let pargs = List.map get_implicit arch_info.flagnames in
let args = List.map (tt_expr_bool arch_info.pd env) pargs in
let doc (c, s) =
let error loc = rs_tyerror ~loc (string_error " = ident is expected after %s" (L.unloc c)) in
let a =
Annot.on_attribute
~on_id:(fun loc _nid s -> L.mk_loc loc (S.PLVar (L.mk_loc loc s)))
error (c,s) in
let _, flv, vty = tt_lvalue arch_info.pd env a in
let e, ety = P.PappN (E.Ocombine_flags (List.assoc (L.unloc c) combines), args), P.etbool in
let e = vty |> Option.map_default (cast (L.loc a) e ety) e in
let ety =
match vty with
| None -> ety
| Some vty -> vty
in
let x = flv ety in
let tg = E.AT_inline in
P.{ i_desc = Cassgn (x, tg, P.tbool, e);
i_loc = L.of_loc c;
i_info = ();
i_annot = [] } in
List.map doc pimp_c in
ls, li
let tt_exprs_cast pd env loc les tys =
let loc () = loc_of_tuples loc (List.map L.loc les) in
let n1 = List.length les in
let n2 = List.length tys in
if n1 <> n2 then
rs_tyerror ~loc:(loc ()) (InvalidArgCount (n1, n2));
List.map2 (fun le ty ->
let e, ety = tt_expr ~mode:`AllVar pd env le in
cast (L.loc le) e ety ty) les tys
let arr_init (xi, ty) =
let open P in
match ty with
| P.ETarr(ws, PE e) as ty ->
let size = PE (icnst (size_of_ws ws) ** e) in
Cassgn (Lvar xi, E.AT_inline, P.gty_of_gety ty, P.Parr_init size)
| _ ->
rs_tyerror ~loc:(L.loc xi) (InvalidArrayType ty)
let cassgn_for (x: P.plval) (tg: E.assgn_tag) (ty: P.epty) (e: P.pexpr) :
(unit, 'asm) P.pinstr_r =
Cassgn (x, tg, P.gty_of_gety ty, e)
let mk_call loc inline lvs f es =
let open P in
begin match f.f_cc with
| Internal -> ()
| Export _ ->
if not inline then
warning InlinedCallToExport (L.i_loc0 loc) "export function will be inlined"
| Subroutine _ when not inline ->
let check_lval = function
| Lnone _ | Lvar _ | Lasub _ -> ()
| Lmem _ | Laset _ -> rs_tyerror ~loc (string_error "memory/array assignment are not allowed here") in
let rec check_e = function
| Pvar _ | Psub _ -> ()
| Pif (_, _, e1, e2) -> check_e e1; check_e e2
| _ -> warning PedanticPretyping (L.i_loc0 loc) "only variables and subarray are allowed in arguments of non-inlined function" in
List.iter check_lval lvs;
List.iter check_e es
| Subroutine _ -> ()
end;
let check_ptr_writable x =
match x.v_kind with
| Stack (Pointer Writable) | Reg (_, Pointer Writable) -> true
| _ -> false in
let check_w x e =
if check_ptr_writable x then
let rec aux = function
| Pvar y | Psub(_, _, _, y, _) ->
let y = L.unloc y.gv in
if not (check_ptr_writable y || y.v_kind = Stack Direct) then
rs_tyerror ~loc (string_error "argument %a needs to be writable" Printer.pp_pvar y)
| Pif (_, _, e1, e2) -> aux e1; aux e2
| _ -> assert false in
aux e in
List.iter2 check_w f.f_args es;
P.Ccall (lvs, f.P.f_name, es)
let assign_from_decl (decl: S.vardecl L.located) =
let v, e = L.unloc decl in
Option.map (fun e ->
let d = L.mk_loc (L.loc decl) (S.PLVar v) in
(None, [d]), `Raw, e, None
) e
let tt_annot_paramdecls dfl_writable pd env (annot, (ty,vs)) =
let aty = annot, ty in
let vars = List.map (fun v -> aty, v) vs in
tt_vardecls_push dfl_writable pd env vars
let rec tt_instr arch_info (env : 'asm Env.env) ((annot,pi) : S.pinstr) : 'asm Env.env * (unit, 'asm) P.pinstr list =
let mk_i ?(annot=annot) instr =
{ P.i_desc = instr; P.i_loc = L.of_loc pi; P.i_info = (); P.i_annot = annot} in
let default_tag = if Annotations.has_symbol "keep" annot then E.AT_keep else E.AT_none in
let rec tt_assign ?tag env_lhs env_rhs ls eqop pe ocp =
match ls, eqop, pe, ocp with
| ls, `Raw, { L.pl_desc = S.PECall (f, args); pl_loc = el }, None when is_combine_flags f ->
tt_assign ~tag:E.AT_inline env_lhs env_rhs ls `Raw (L.mk_loc el (S.PECombF(f, args))) None
| ls, `Raw, { L.pl_desc = S.PECall (f, args); pl_loc = el }, None ->
let (f,fsig) = tt_fun env_rhs f in
let lvs, is = tt_lvalues arch_info env_lhs (L.loc pi) ls None fsig.fs_tout in
assert (is = []);
let es = tt_exprs_cast arch_info.pd env_rhs (L.loc pi) args fsig.fs_tin in
let is_inline = P.is_inline annot f.P.f_cc in
let annot =
if is_inline || FInfo.is_export f.P.f_cc
then Annotations.add_symbol ~loc:el "inline" annot
else annot
in
[mk_i ~annot (mk_call (L.loc pi) is_inline lvs f es)]
| (ls, xs), `Raw, { pl_desc = PEPrim (f, args) }, None
when L.unloc f = "spill" || L.unloc f = "unspill" ->
let op = L.unloc f in
if ls <> None then rs_tyerror ~loc:(L.loc pi) (string_error "%s expects no implicit result" op);
if xs <> [] then rs_tyerror ~loc:(L.loc pi) (string_error "%s expects no result" op);
let es = tt_exprs arch_info.pd env_rhs args in
let doit (e, _) =
match e with
| P.Pvar x when P.is_reg_kind (P.kind_i x.gv) -> e
| _ -> rs_tyerror ~loc:(L.loc pi) (string_error "%s expects only reg/reg ptr as arguments" op) in
let es = List.map doit es in
let op = if op = "spill" then Pseudo_operator.Spill else Pseudo_operator.Unspill in
let p = Sopn.Opseudo_op (Ospill(op, [] )) in
[mk_i ~annot (P.Copn([], AT_keep, p, es))]
| (ls, xs), `Raw, { pl_desc = PEPrim (f, args) }, None when L.unloc f = "randombytes" ->
if ls <> None then rs_tyerror ~loc:(L.loc pi) (string_error "randombytes expects no implicit arguments");
let loc, x, ty =
match xs with
| [x] ->
let loc, x, oty = tt_lvalue arch_info.pd env_lhs x in
let ty =
match oty with
| None -> rs_tyerror ~loc (string_error "_ lvalue not accepted here")
| Some ty -> ty in
loc, x ty, ty
| _ ->
rs_tyerror ~loc:(L.loc pi)
(string_error "only a single variable is allowed as destination of randombytes") in
let _ = tt_as_array (loc, ty) in
let es = tt_exprs_cast arch_info.pd env_rhs (L.loc pi) args [ty] in
[mk_i (P.Csyscall([x], Syscall_t.RandomBytes (Conv.pos_of_int 1), es))]
| (ls, xs), `Raw, { pl_desc = PEPrim (f, args) }, None when L.unloc f = "swap" ->
if ls <> None then rs_tyerror ~loc:(L.loc pi) (string_error "swap expects no implicit arguments");
let lvs, ty =
match xs with
| [x; y] ->
let loc, x, oxty = tt_lvalue arch_info.pd env_lhs x in
let yloc, y, _oytu = tt_lvalue arch_info.pd env_lhs y in
let ty =
match oxty with
| None -> rs_tyerror ~loc (string_error "_ lvalue not accepted here")
| Some ty -> ty in
let _ =
match oxty with
| None -> rs_tyerror ~loc (string_error "_ lvalue not accepted here")
| Some yty -> check_ty_eq ~loc:yloc ~from:yty ~to_:ty in
[x ty; y ty], ty
| _ ->
rs_tyerror ~loc:(L.loc pi)
(string_error "a pair of destination is expected for swap")
in
let () = match ty with
| P.ETarr _ -> ()
| P.ETword(None, ws) when ws <= U64 -> ()
| _ ->
let w = match ty with P.ETword(w, ws) -> w | _ -> None in
let ty = match P.gty_of_gety ty with P.Bty ty -> ty | _ -> assert false in
rs_tyerror ~loc:(L.loc pi)
(string_error "the swap primitive is not available at type %a"
(PrintCommon.pp_btype ?w) ty)
in
let es = tt_exprs_cast arch_info.pd env_rhs (L.loc pi) args [ty; ty] in
let p = Sopn.Opseudo_op (Oswap Type.Coq_sbool) in
[mk_i (P.Copn(lvs, Option.default default_tag tag, p, es))]
| ls, `Raw, { pl_desc = PEPrim (f, args) }, None ->
let p = tt_prim arch_info.asmOp f in
let tlvs, tes, arguments = prim_sig arch_info.asmOp p in
let lvs, einstr = tt_lvalues arch_info env_lhs (L.loc pi) ls (Some arguments) tlvs in
let es = tt_exprs_cast arch_info.pd env_rhs (L.loc pi) args tes in
let must_keep = lvs = [] || match p with Oslh _ -> true | _ -> false in
mk_i (P.Copn(lvs, Option.default (if must_keep then E.AT_keep else default_tag) tag, p, es)) :: einstr
| ls, `Raw, { pl_desc = PEOp1 (`Cast(`ToWord ct), {pl_desc = PEPrim (f, args) }); pl_loc = loc} , None
->
let ws =
match ct with
| (ws, `Word _) -> ws
| (ws, `WInt _) -> rs_tyerror ~loc (string_error "invalid cast for asm operator")
in
let p = tt_prim arch_info.asmOp f in
let id = Sopn.asm_op_instr arch_info.asmOp p in
let p = cast_opn ~loc:(L.loc pi) id ws p in
let tlvs, tes, arguments = prim_sig arch_info.asmOp p in
let lvs, einstr = tt_lvalues arch_info env_lhs (L.loc pi) ls (Some arguments) tlvs in
let es = tt_exprs_cast arch_info.pd env_rhs (L.loc pi) args tes in
mk_i (P.Copn(lvs, Option.default default_tag tag, p, es)) :: einstr
| (None,[lv]), `Raw, pe, None ->
let _, flv, vty = tt_lvalue arch_info.pd env_lhs lv in
let e, ety = tt_expr ~mode:`AllVar arch_info.pd env_rhs pe in
let e = vty |> Option.map_default (cast (L.loc pe) e ety) e in
let ety =
match vty with
| None -> ety
| Some vty -> vty
in
let v = flv ety in
let tg =
P.(match v with
| Lvar v when kind_i v = Inline -> E.AT_inline
| _ -> Option.default default_tag tag) in
[mk_i (cassgn_for v tg ety e)]
| ls, `Raw, pe, None ->
let pe = prim_of_pe pe in
tt_assign env_lhs env_rhs ls `Raw pe None
| (pimp,ls), eqop, pe, None ->
let op = oget (peop2_of_eqop eqop) in
let loc = L.loc pi in
let exn = tyerror ~loc EqOpWithNoLValue in
if List.is_empty ls then raise exn;
let pe1 = pexpr_of_plvalue exn (List.last ls) in
let pe = L.mk_loc loc (S.PEOp2(op,(pe1,pe))) in
tt_assign env_lhs env_rhs (pimp, ls) `Raw pe None
| ls, eqop, e, Some cp ->
let loc = L.loc pi in
let exn = Unsupported "if not allowed here" in
let i = tt_assign env_lhs env_rhs ls eqop e None in
let x, ty, e, is =
match i with
| { i_desc = P.Cassgn (x, _, ty, e) ; _ } :: is -> x, ty, e, is
| _ -> rs_tyerror ~loc exn in
let e' = oget ~exn:(tyerror ~loc exn) (P.expr_of_lval x) in
let c = tt_expr_bool arch_info.pd env_rhs cp in
mk_i (P.Cassgn (x, default_tag, ty, Pif (ty, c, e, e'))) :: is
in
let tt_annot_decl env (vd: S.vardecl L.located) (aty: A.annotations * S.pstotype) =
let env_rhs = env in
let var = tt_vardecl (fun _ -> true) arch_info.pd env (aty, S.var_decl_id (L.unloc vd)) in
let env = Env.Vars.push_local env_rhs (L.unloc var) in
match assign_from_decl vd with
| None -> env, []
| Some (ls, eq, op, ocp) -> env, tt_assign env env_rhs ls eq op ocp
in
match L.unloc pi with
| S.PIdecl (ty,vds) ->
List.fold (fun (env, acc) v ->
let env, cmd = tt_annot_decl env v (annot, ty) in
env, acc @ cmd)
(env, [])
vds
| S.PIArrayInit ({ L.pl_loc = lc; } as x) ->
let x, xty = tt_var `AllVar env x in
let xi = (L.mk_loc lc x) in
env, [mk_i (arr_init (xi, xty))]
| S.PIAssign (ls, eqop, pe, ocp) -> env, tt_assign env env ls eqop pe ocp
| PIIf (cp, st, sf) ->
let c = tt_expr_bool arch_info.pd env cp in
let st = tt_block arch_info env st in
let sf = Option.map_default (tt_block arch_info env) [] sf in
env, [mk_i (P.Cif (c, st, sf))]
| PIFor ({ pl_loc = lx } as x, (d, i1, i2), s) ->
let i1 = tt_expr_int arch_info.pd env i1 in
let i2 = tt_expr_int arch_info.pd env i2 in
let vx, xty = tt_var `AllVar env x in
check_ty_eq ~loc:lx ~from:xty ~to_:P.etint;
let s = tt_block arch_info env s in
let d = match d with `Down -> E.DownTo | `Up -> E.UpTo in
env, [mk_i (P.Cfor (L.mk_loc lx vx, (d, i1, i2), s))]
| PIWhile (s1, e, s2) ->
let c = tt_expr_bool arch_info.pd env e in
let s1 = Option.map_default (tt_block arch_info env) [] s1 in
let s2 = Option.map_default (tt_block arch_info env) [] s2 in
let a =
Option.map_default (fun () -> E.Align) E.NoAlign (Annot.ensure_uniq1 "align" Annot.none annot) in
let annot = Annot.consume "align" annot in
env, [mk_i ~annot (P.Cwhile (a, s1, c, ((L.of_loc e, []), ()), s2))]
and tt_block arch_info env (pb : S.pblock) =
snd (tt_cmd arch_info env (L.unloc pb))
and tt_cmd arch_info env c =
match c with
| [] -> env, []
| i::c ->
let env, i = tt_instr arch_info env i in
let env, c = tt_cmd arch_info env c in
env, i @ c
let tt_funbody arch_info env (pb : S.pfunbody) =
let env, bdy = tt_cmd arch_info env pb.S.pdb_instr in
let ret_loc = L.loc pb.pdb_ret in
let ret =
let for1 x = L.mk_loc (L.loc x) (tt_var `AllVar env x) in
List.map for1 (Option.default [] (L.unloc pb.pdb_ret)) in
(bdy, ret_loc, ret)
let tt_call_conv _loc params returns cc =
match cc with
| Some `Inline -> FInfo.Internal
| Some `Export | None ->
let check s x =
if not (P.is_reg_kind (L.unloc x).P.v_kind) then
warning PedanticPretyping (L.i_loc0 (L.loc x))
"%a has kind %a, only reg or reg ptr are allowed in %s of non inlined function"
Printer.pp_pvar (L.unloc x)
PrintCommon.pp_kind (L.unloc x).P.v_kind s in
List.iter (check "parameter") params;
List.iter (check "result") returns;
let returned_params =
let args = List.map L.unloc params in
List.map (fun x ->
let loc = L.loc x in
let x = L.unloc x in
match x.P.v_kind with
| W.Reg(_, Direct) -> None
| W.Reg(_, Pointer writable) ->
if writable = Constant then
warning Always (L.i_loc0 loc) "no need to return a [reg const ptr] %a"
Printer.pp_pvar x;
let i = List.index_of x args in
if i = None then
rs_tyerror ~loc (string_error "%a should be one of the paramaters"
Printer.pp_pvar x);
i
| _ -> assert false) returns in
let is_writable_ptr k =
match k with
| W.Reg(_, Pointer Writable) -> true
| _ -> false in
let check_writable_param i x =
let loc = L.loc x in
let x = L.unloc x in
if is_writable_ptr x.P.v_kind then
if not (List.exists ((=) (Some i)) returned_params) then
rs_tyerror ~loc (string_error "%a is mutable, it should be returned"
Printer.pp_pvar x) in
List.iteri check_writable_param params;
if cc = None then
FInfo.Subroutine { returned_params }
else
FInfo.Export { returned_params }
let process_f_annot loc funname f_cc annot =
let open FInfo in
let mk_ra = Annot.filter_string_list None ["stack", OnStack; "reg", OnReg] in
let retaddr_kind =
let kind = Annot.ensure_uniq1 "returnaddress" mk_ra annot in
if kind <> None && not (FInfo.is_subroutine f_cc) then
hierror
~loc:(Lone loc)
~funname
~kind:"unexpected annotation"
"returnaddress only applies to subroutines";
kind
in
let stack_zero_strategy =
let strategy =
let mk_szs = Annot.filter_string_list None Glob_options.stack_zero_strategies in
let strategy = Annot.ensure_uniq1 "stackzero" mk_szs annot in
if strategy <> None && not (FInfo.is_export f_cc) then
hierror
~loc:(Lone loc)
~funname
~kind:"unexpected annotation"
"stackzero only applies to export functions";
if Option.is_none strategy then
!Glob_options.stack_zero_strategy
else
strategy
in
let size =
let size = Annot.ensure_uniq1 "stackzerosize" (Annot.wsize None) annot in
if Option.is_none size then
!Glob_options.stack_zero_size
else
size
in
match strategy, size with
| None, None -> None
| None, Some _ ->
warning Always
(L.i_loc0 loc)
"\"stackzerosize\" is ignored, since you did not specify a strategy with attribute \"stackzero\"";
None
| Some szs, _ -> Some (szs, size)
in
{ retaddr_kind;
stack_allocation_size = Annot.ensure_uniq1 "stackallocsize" (Annot.pos_int None) annot;
stack_size = Annot.ensure_uniq1 "stacksize" (Annot.pos_int None) annot;
stack_align = Annot.ensure_uniq1 "stackalign" (Annot.wsize None) annot;
max_call_depth = Annot.ensure_uniq1 "calldepth" (Annot.pos_int None) annot;
stack_zero_strategy;
f_user_annot = annot;
}
let rec add_reserved_i env (_,i) =
match L.unloc i with
| S.PIdecl (_, ids) ->
List.fold_left (fun env id -> Env.add_reserved env (L.unloc (S.var_decl_id (L.unloc id)))) env ids
| PIArrayInit _ | PIAssign _ -> env
| PIIf(_, c, oc) -> add_reserved_oc (add_reserved_c' env c) oc
| PIFor(_, _, c) -> add_reserved_c' env c
| PIWhile(oc1, _, oc2) -> add_reserved_oc (add_reserved_oc env oc1) oc2
and add_reserved_c env c =
List.fold_left add_reserved_i env c
and add_reserved_c' env c = add_reserved_c env (L.unloc c)
and add_reserved_oc env =
function
| None -> env
| Some c -> add_reserved_c' env c
let add_known_implicits arch_info env c =
let env = add_reserved_c env c in
let create env s =
if not (Env.is_reserved env s) then s
else
let rec aux i =
let s' = Format.sprintf "%s_%i" s i in
if not (Env.is_reserved env s') then s'
else aux (i+1) in
aux 0 in
let env, known_implicits =
List.map_fold (fun env (s1, s2) ->
let s2 = create env s2 in
let env = Env.Vars.push_implicit env (mk_var s2 (Reg(Normal, Direct)) P.etbool L._dummy [], P.etbool) in
env, (s1, s2)) env arch_info.known_implicits in
Env.set_known_implicits env known_implicits
let warn_unused_variables env f =
let used = List.fold_left (fun s v -> P.Spv.add (L.unloc v) s) P.Spv.empty f.P.f_ret in
let used = P.Spv.union used (P.pvars_c f.P.f_body) in
let pp_var fmt x = F.fprintf fmt "%s.%s" x.P.v_name (CoreIdent.string_of_uid x.P.v_id) in
Env.Vars.iter_locals (fun x ->
if not (P.Spv.mem x used) then
warning UnusedVar (L.i_loc0 x.v_dloc) "unused variable %a" pp_var x)
env
let tt_fundef arch_info (env0 : 'asm Env.env) loc (pf : S.pfundef) : 'asm Env.env =
let env = Env.Vars.clear_locals env0 in
if is_combine_flags pf.pdf_name then
rs_tyerror ~loc:(L.loc pf.pdf_name) (string_error "invalid function name");
let inret = Option.map_default (List.map L.unloc) [] (L.unloc pf.pdf_body.pdb_ret) in
let dfl_mut x = List.mem x inret in
let envb, args =
let env, args = List.map_fold (tt_annot_paramdecls dfl_mut arch_info.pd) env pf.pdf_args in
let env = add_known_implicits arch_info env pf.pdf_body.pdb_instr in
env, List.flatten args in
let fs_tout = Option.map_default (List.map (tt_type arch_info.pd env |- snd |- snd)) [] pf.pdf_rty in
let ret_annot = Option.map_default (List.map fst) [] pf.pdf_rty in
let body, ret_loc, xret = tt_funbody arch_info envb pf.pdf_body in
let f_args = List.map (fun x -> L.mk_loc (L.loc x) (fst (L.unloc x))) args in
let fs_tin = List.map (fun x -> snd (L.unloc x)) args in
let f_ret = List.map (fun x -> L.mk_loc (L.loc x) (fst (L.unloc x))) xret in
let f_cc = tt_call_conv loc f_args f_ret pf.pdf_cc in
let name = L.unloc pf.pdf_name in
let fdef =
{ P.f_loc = loc;
P.f_annot = process_f_annot loc name f_cc pf.pdf_annot;
P.f_cc = f_cc;
P.f_info = ();
P.f_name = P.F.mk name;
P.f_tyin = List.map P.gty_of_gety fs_tin;
P.f_args = List.map L.unloc f_args;
P.f_body = body;
P.f_tyout = List.map P.gty_of_gety fs_tout;
P.f_ret_info = { ret_annot; ret_loc };
P.f_ret = f_ret; } in
check_return_statement ~loc fdef.P.f_name fs_tout
(List.map (fun x -> L.loc x, snd (L.unloc x)) xret);
warn_unused_variables envb fdef;
let return_storage = Option.map_default (List.map (fst |- snd)) [] pf.pdf_rty in
check_return_storage ~loc fdef.P.f_name return_storage f_ret;
Env.Funs.push env0 fdef {fs_tin; fs_tout}
let tt_global_def pd env (gd:S.gpexpr) =
let f e =
let pe,ety = tt_expr ~mode:`AllVar pd env e in
(L.mk_loc e.pl_loc pe, ety) in
let array_of_string s =
L.unloc s |> String.to_list |> List.map @@ fun c ->
c |> Char.code |> Z.of_int |> fun z ->
P.(L.mk_loc (L.loc s) (Papp1 (op_word_of_int(Word, W.Unsigned, W.U8), Pconst z)), P.etw U8) in
match gd with
| S.GEword e ->
`Word (f e)
| S.GEarray es ->
`Array (List.map f es)
| S.GEstring e ->
`Array (array_of_string e)
let tt_global pd (env : 'asm Env.env) _loc (gd: S.pglobal) : 'asm Env.env =
let open P in
let mk_pe ws (pe,ety) =
match ety with
| P.ETword(wk, ews) when wk = None && Utils0.cmp_le Wsize.wsize_cmp ws ews ->
L.unloc pe
| P.ETint -> Papp1 (op_word_of_int(Word, W.Unsigned, ws), L.unloc pe)
| _ -> rs_tyerror ~loc:(L.loc pe) (TypeMismatch (ety, P.etw ws))
in
let ty, d =
match tt_type pd env gd.S.pgd_type, tt_global_def pd env gd.S.pgd_val with
| P.ETword(None, ws) as ty, `Word (pe,ety) ->
let pe = mk_pe ws (pe,ety) in
ty, P.GEword pe
| (P.ETint | P.ETbool | P.ETword _), `Array _ ->
rs_tyerror ~loc:(L.loc gd.S.pgd_type) GlobArrayNotWord
| P.ETarr(ws, _n) as ty, `Array es ->
let pes = List.map (mk_pe ws) es in
ty, P.GEarray pes
| P.ETarr _, `Word _ ->
rs_tyerror ~loc:(L.loc gd.S.pgd_type) GlobWordNotArray
| ty,_ -> rs_tyerror ~loc:(L.loc gd.S.pgd_type) (InvalidTypeForGlobal ty)
in
let x = mk_var (L.unloc gd.S.pgd_name) W.Global ty (L.loc gd.S.pgd_name) [] in
Env.Vars.push_global env (x,ty,d)
let tt_typealias arch_info env id ty =
let alias = tt_type arch_info.pd env ty in
Env.TypeAlias.push env id alias
let rec tt_item arch_info (env : 'asm Env.env) pt : 'asm Env.env =
match L.unloc pt with
| S.PParam pp -> tt_param arch_info.pd env (L.loc pt) pp
| S.PFundef pf -> tt_fundef arch_info env (L.loc pt) pf
| S.PGlobal pg -> tt_global arch_info.pd env (L.loc pt) pg
| S.Pexec pf ->
Env.Exec.push (L.loc pt)
(fst (tt_fun env pf.pex_name)).P.f_name
(List.map (fun (x, y) -> S.parse_int x, S.parse_int y) pf.pex_mem)
env
| S.Prequire (from, fs) ->
List.fold_left (tt_file_loc arch_info from) env fs
| S.PNamespace (ns, items) ->
let env = Env.enter_namespace env ns in
let env = List.fold_left (tt_item arch_info) env items in
let env = Env.exit_namespace env in
env
| S.PTypeAlias (id,ty) -> tt_typealias arch_info env id ty
and tt_file_loc arch_info from env fname =
fst (tt_file arch_info env from (Some (L.loc fname)) (L.unloc fname))
and tt_file arch_info env from loc fname =
match Env.enter_file env from loc fname with
| None -> env, []
| Some(env, fname) ->
let ast = Parseio.parse_program ~name:fname in
let ast =
try BatFile.with_file_in fname ast
with Sys_error(err) ->
let loc = Option.map_default (fun l -> Lone l) Lnone loc in
hierror ~loc ~kind:"typing" "error reading file %S (%s)" fname err
in
let env = List.fold_left (tt_item arch_info) env ast in
Env.exit_file env, ast
let tt_program arch_info (env : 'asm Env.env) (fname : string) =
let env, ast = tt_file arch_info env None None fname in
env, Env.decls env, ast