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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* $Id$ *)
open Names
open Term
type tag = int
val id_tag : tag
val iddef_tag : tag
val ind_tag : tag
val fix_tag : tag
val switch_tag : tag
val cofix_tag : tag
val cofix_evaluated_tag : tag
type structured_constant =
| Const_sorts of sorts
| Const_ind of inductive
| Const_b0 of tag
| Const_bn of tag * structured_constant array
type reloc_table = (tag * int) array
type annot_switch =
{ci : case_info; rtbl : reloc_table; tailcall : bool}
module Label :
sig
type t = int
val no : t
val create : unit -> t
val reset_label_counter : unit -> unit
end
type instruction =
| Klabel of Label.t
| Kacc of int
| Kenvacc of int
| Koffsetclosure of int
| Kpush
| Kpop of int
| Kpush_retaddr of Label.t
| Kapply of int (** number of arguments *)
| Kappterm of int * int (** number of arguments, slot size *)
| Kreturn of int (** slot size *)
| Kjump
| Krestart
| Kgrab of int (** number of arguments *)
| Kgrabrec of int (** rec arg *)
| Kclosure of Label.t * int (** label, number of free variables *)
| Kclosurerec of int * int * Label.t array * Label.t array
(** nb fv, init, lbl types, lbl bodies *)
| Kclosurecofix of int * int * Label.t array * Label.t array
(** nb fv, init, lbl types, lbl bodies *)
| Kgetglobal of constant
| Kconst of structured_constant
| Kmakeblock of int * tag (** size, tag *)
| Kmakeprod
| Kmakeswitchblock of Label.t * Label.t * annot_switch * int
| Kswitch of Label.t array * Label.t array (** consts,blocks *)
| Kpushfields of int
| Kfield of int
| Ksetfield of int
| Kstop
| Ksequence of bytecodes * bytecodes
(** spiwack: instructions concerning integers *)
| Kbranch of Label.t (** jump to label, is it needed ? *)
| Kaddint31 (** adds the int31 in the accu
and the one ontop of the stack *)
| Kaddcint31 (** makes the sum and keeps the carry *)
| Kaddcarrycint31 (** sum +1, keeps the carry *)
| Ksubint31 (** subtraction modulo *)
| Ksubcint31 (** subtraction, keeps the carry *)
| Ksubcarrycint31 (** subtraction -1, keeps the carry *)
| Kmulint31 (** multiplication modulo *)
| Kmulcint31 (** multiplication, result in two
int31, for exact computation *)
| Kdiv21int31 (** divides a double size integer
(represented by an int31 in the
accumulator and one on the top of
the stack) by an int31. The result
is a pair of the quotient and the
rest.
If the divisor is 0, it returns
0. *)
| Kdivint31 (** euclidian division (returns a pair
quotient,rest) *)
| Kaddmuldivint31 (** generic operation for shifting and
cycling. Takes 3 int31 i j and s,
and returns x*2^s+y/(2^(31-s) *)
| Kcompareint31 (** unsigned comparison of int31
cf COMPAREINT31 in
kernel/byterun/coq_interp.c
for more info *)
| Khead0int31 (** Give the numbers of 0 in head of a in31*)
| Ktail0int31 (** Give the numbers of 0 in tail of a in31
ie low bits *)
| Kisconst of Label.t (** conditional jump *)
| Kareconst of int*Label.t (** conditional jump *)
| Kcompint31 (** dynamic compilation of int31 *)
| Kdecompint31 (** dynamix decompilation of int31
/spiwack *)
and bytecodes = instruction list
type fv_elem = FVnamed of identifier | FVrel of int
type fv = fv_elem array
(** spiwack: this exception is expected to be raised by function expecting
closed terms. *)
exception NotClosed
(*spiwack: both type have been moved from Cbytegen because I needed then
for the retroknowledge *)
type vm_env = {
size : int; (** longueur de la liste [n] *)
fv_rev : fv_elem list (** [fvn; ... ;fv1] *)
}
type comp_env = {
nb_stack : int; (** nbre de variables sur la pile *)
in_stack : int list; (** position dans la pile *)
nb_rec : int; (** nbre de fonctions mutuellement *)
(** recursives = nbr *)
pos_rec : instruction list; (** instruction d'acces pour les variables *)
(** de point fix ou de cofix *)
offset : int;
in_env : vm_env ref
}
val draw_instr : bytecodes -> unit
(*spiwack: moved this here because I needed it for retroknowledge *)
type block =
| Bconstr of constr
| Bstrconst of structured_constant
| Bmakeblock of int * block array
| Bconstruct_app of int * int * int * block array
(** tag , nparams, arity *)
| Bspecial of (comp_env -> block array -> int -> bytecodes -> bytecodes) * block array
(** compilation function (see get_vm_constant_dynamic_info in
retroknowledge.mli for more info) , argument array *)
|
