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|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \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 caml_prim =
| CAML_Arraymake
| CAML_Arrayget
| CAML_Arraydefault
| CAML_Arrayset
| CAML_Arraycopy
| CAML_Arraylength
| CAML_Stringmake
| CAML_Stringlength
| CAML_Stringget
| CAML_Stringsub
| CAML_Stringcat
| CAML_Stringcompare
type instruction =
| Klabel of Label.t
| Kacc of int
| Kenvacc of int
| Koffsetclosure of int
| Kpush
| Kpop of int
| Kpush_retaddr of Label.t
| Kshort_apply of int
| 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
| Ksubstinstance of UVars.Instance.t
| Kconst of structured_constant
| Kmakeblock of int * tag
| 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
| Kproj of int
| Kensurestackcapacity of int
| Kbranch of Label.t (* jump to label *)
| Kprim of CPrimitives.t * pconstant
| Kcamlprim of caml_prim * Label.t
and bytecodes = instruction list
type fv_elem =
| FVnamed of Id.t
| FVrel of int
type fv = fv_elem array
(* --- Pretty print *)
open Pp
open Util
let caml_prim_to_prim = function
| CAML_Arraymake -> CPrimitives.Arraymake
| CAML_Arrayget -> CPrimitives.Arrayget
| CAML_Arraydefault -> CPrimitives.Arraydefault
| CAML_Arrayset -> CPrimitives.Arrayset
| CAML_Arraycopy -> CPrimitives.Arraycopy
| CAML_Arraylength -> CPrimitives.Arraylength
| CAML_Stringmake -> CPrimitives.Stringmake
| CAML_Stringlength -> CPrimitives.Stringlength
| CAML_Stringget -> CPrimitives.Stringget
| CAML_Stringsub -> CPrimitives.Stringsub
| CAML_Stringcat -> CPrimitives.Stringcat
| CAML_Stringcompare -> CPrimitives.Stringcompare
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 ")"
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
| Kshort_apply n -> str "short_apply " ++ int n
| 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) ->
hv 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) ->
hv 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
| Ksubstinstance u ->
str "subst_instance " ++
UVars.Instance.pr Sorts.QVar.raw_pr Univ.Level.raw_pr u
| Kconst sc ->
str "const " ++ pp_struct_const sc
| Kmakeblock(n, m) ->
str "makeblock " ++ int n ++ str ", " ++ int m
| Kmakeswitchblock(lblt,lbls,_,sz) ->
str "makeswitchblock " ++ pp_lbl lblt ++ str ", " ++
pp_lbl lbls ++ str ", " ++ int sz
| Kswitch(lblc,lblb) ->
hv 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 " ++ int p
| Kensurestackcapacity size -> str "growstack " ++ int size
| Kprim (op, id) -> str (CPrimitives.to_string op) ++ str " " ++
(Constant.print (fst id))
| Kcamlprim (op, lbl) ->
str "camlcall " ++ str (CPrimitives.to_string (caml_prim_to_prim op)) ++ str ", branch " ++
pp_lbl lbl ++ str " on accu"
and pp_bytecodes c =
match c with
| [] -> str ""
| Klabel lbl :: c ->
str "L" ++ int lbl ++ str ":" ++ fnl () ++
pp_bytecodes c
| Ksequence l :: c ->
pp_bytecodes l ++ pp_bytecodes c
| i :: c ->
pp_instr i ++ fnl () ++ pp_bytecodes c
|
