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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2019 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
(* Created by Bruno Barras for Benjamin Grégoire as part of the
bytecode-based reduction machine, Oct 2004 *)
(* Support for native arithmetics by Arnaud Spiwack, May 2007 *)
(* This file defines the type of bytecode instructions *)
open Names
open Vmvalues
open Constr
module Label =
struct
type t = int
let no = -1
let counter = ref no
let create () = incr counter; !counter
let reset_label_counter () = counter := no
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
| Kappterm of int * int
| Kreturn of int
| Kjump
| Krestart
| Kgrab of int
| Kgrabrec of int
| Kclosure of Label.t * int
| Kclosurerec of int * int * Label.t array * Label.t array
| Kclosurecofix of int * int * Label.t array * Label.t array
(* nb fv, init, lbl types, lbl bodies *)
| Kgetglobal of Constant.t
| Kconst of structured_constant
| Kmakeblock of int * tag
| Kmakeprod
| Kmakeswitchblock of Label.t * Label.t * annot_switch * int
| Kswitch of Label.t array * Label.t array
| Kpushfields of int
| Kfield of int
| Ksetfield of int
| Kstop
| Ksequence of bytecodes * bytecodes
| Kproj of Projection.Repr.t
| Kensurestackcapacity of int
| Kbranch of Label.t (* jump to label *)
| Kprim of CPrimitives.t * pconstant option
| Kareint of int
and bytecodes = instruction list
type fv_elem =
| FVnamed of Id.t
| FVrel of int
| FVuniv_var of int
| FVevar of Evar.t
type fv = fv_elem array
(* --- Pretty print *)
open Pp
open Util
let pp_lbl lbl = str "L" ++ int lbl
let pp_fv_elem = function
| FVnamed id -> str "FVnamed(" ++ Id.print id ++ str ")"
| FVrel i -> str "Rel(" ++ int i ++ str ")"
| FVuniv_var v -> str "FVuniv(" ++ int v ++ str ")"
| FVevar e -> str "FVevar(" ++ int (Evar.repr e) ++ str ")"
let rec pp_instr i =
match i with
| Klabel _ | Ksequence _ -> assert false
| Kacc n -> str "acc " ++ int n
| Kenvacc n -> str "envacc " ++ int n
| Koffsetclosure n -> str "offsetclosure " ++ int n
| Kpush -> str "push"
| Kpop n -> str "pop " ++ int n
| Kpush_retaddr lbl -> str "push_retaddr " ++ pp_lbl lbl
| Kapply n -> str "apply " ++ int n
| Kappterm(n, m) ->
str "appterm " ++ int n ++ str ", " ++ int m
| Kreturn n -> str "return " ++ int n
| Kjump -> str "jump"
| Krestart -> str "restart"
| Kgrab n -> str "grab " ++ int n
| Kgrabrec n -> str "grabrec " ++ int n
| Kclosure(lbl, n) ->
str "closure " ++ pp_lbl lbl ++ str ", " ++ int n
| Kclosurerec(fv,init,lblt,lblb) ->
h 1 (str "closurerec " ++
int fv ++ str ", " ++ int init ++
str " types = " ++
prlist_with_sep spc pp_lbl (Array.to_list lblt) ++
str " bodies = " ++
prlist_with_sep spc pp_lbl (Array.to_list lblb))
| Kclosurecofix (fv,init,lblt,lblb) ->
h 1 (str "closurecofix " ++
int fv ++ str ", " ++ int init ++
str " types = " ++
prlist_with_sep spc pp_lbl (Array.to_list lblt) ++
str " bodies = " ++
prlist_with_sep spc pp_lbl (Array.to_list lblb))
| Kgetglobal idu -> str "getglobal " ++ Constant.print idu
| Kconst sc ->
str "const " ++ pp_struct_const sc
| Kmakeblock(n, m) ->
str "makeblock " ++ int n ++ str ", " ++ int m
| Kmakeprod -> str "makeprod"
| Kmakeswitchblock(lblt,lbls,_,sz) ->
str "makeswitchblock " ++ pp_lbl lblt ++ str ", " ++
pp_lbl lbls ++ str ", " ++ int sz
| Kswitch(lblc,lblb) ->
h 1 (str "switch " ++
prlist_with_sep spc pp_lbl (Array.to_list lblc) ++
str " | " ++
prlist_with_sep spc pp_lbl (Array.to_list lblb))
| Kpushfields n -> str "pushfields " ++ int n
| Kfield n -> str "field " ++ int n
| Ksetfield n -> str "setfield " ++ int n
| Kstop -> str "stop"
| Kbranch lbl -> str "branch " ++ pp_lbl lbl
| Kproj p -> str "proj " ++ Projection.Repr.print p
| Kensurestackcapacity size -> str "growstack " ++ int size
| Kprim (op, id) -> str (CPrimitives.to_string op) ++ str " " ++
(match id with Some (id,_u) -> Constant.print id | None -> str "")
| Kareint n -> str "areint " ++ int n
and pp_bytecodes c =
match c with
| [] -> str ""
| Klabel lbl :: c ->
str "L" ++ int lbl ++ str ":" ++ fnl () ++
pp_bytecodes c
| Ksequence (l1, l2) :: c ->
pp_bytecodes l1 ++ pp_bytecodes l2 ++ pp_bytecodes c
| i :: c ->
pp_instr i ++ fnl () ++ pp_bytecodes c