1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <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) *)
(************************************************************************)
(* $Id$ *)
open Names
open Vmvalues
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 (** accu = sp[n] *)
| Kenvacc of int (** accu = coq_env[n] *)
| Koffsetclosure of int (** accu = &coq_env[n] *)
| Kpush (** sp = accu :: sp *)
| Kpop of int (** sp = skipn n sp *)
| Kpush_retaddr of Label.t (** sp = pc :: coq_env :: coq_extra_args :: sp ; coq_extra_args = 0 *)
| Kapply of int (** number of arguments (arguments on top of stack) *)
| 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.t
| Kconst of structured_constant
| Kmakeblock of (* size: *) int * tag (** allocate an ocaml block. Index 0
** is accu, all others are popped from
** the top of the stack *)
| 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 (** accu = accu[n] *)
| Ksetfield of int (** accu[n] = sp[0] ; sp = pop sp *)
| Kstop
| Ksequence of bytecodes * bytecodes
| Kproj of Projection.Repr.t
| Kensurestackcapacity of int
(** 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 *)
| Klorint31 (** bitwise operations: or and xor *)
| Klandint31
| Klxorint31
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
(** spiwack: this exception is expected to be raised by function expecting
closed terms. *)
exception NotClosed
module FvMap : Map.S with type key = fv_elem
(*spiwack: both type have been moved from Cbytegen because I needed them
for the retroknowledge *)
type vm_env = {
size : int; (** length of the list [n] *)
fv_rev : fv_elem list; (** [fvn; ... ;fv1] *)
fv_fwd : int FvMap.t; (** reverse mapping *)
}
type comp_env = {
arity : int; (* arity of the current function, 0 if none *)
nb_uni_stack : int ; (** number of universes on the stack *)
nb_stack : int; (** number of variables on the stack *)
in_stack : int list; (** position in the stack *)
nb_rec : int; (** number of mutually recursive functions *)
(** (= nbr) *)
pos_rec : instruction list; (** instruction d'acces pour les variables *)
(** de point fix ou de cofix *)
offset : int;
in_env : vm_env ref (** the variables that are accessed *)
}
val pp_bytecodes : bytecodes -> Pp.t
val pp_fv_elem : fv_elem -> Pp.t
|
