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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
open Names
open Term
open Vm
open Cemitcodes
open Cbytecodes
open Declarations
open Pre_env
open Cbytegen
external tcode_of_code : emitcodes -> int -> tcode = "coq_tcode_of_code"
external free_tcode : tcode -> unit = "coq_static_free"
external eval_tcode : tcode -> values array -> values = "coq_eval_tcode"
(*******************)
(* Linkage du code *)
(*******************)
(* Table des globaux *)
(* [global_data] contient les valeurs des constantes globales
(axiomes,definitions), les annotations des switch et les structured
constant *)
external global_data : unit -> values array = "get_coq_global_data"
(* [realloc_global_data n] augmente de n la taille de [global_data] *)
external realloc_global_data : int -> unit = "realloc_coq_global_data"
let check_global_data n =
if n >= Array.length (global_data()) then realloc_global_data n
let num_global = ref 0
let set_global v =
let n = !num_global in
check_global_data n;
(global_data()).(n) <- v;
incr num_global;
n
(* [global_transp],[global_boxed] contiennent les valeurs des
definitions gelees. Les deux versions sont maintenues en //.
[global_transp] contient la version transparente.
[global_boxed] contient la version gelees. *)
external global_boxed : unit -> bool array = "get_coq_global_boxed"
(* [realloc_global_data n] augmente de n la taille de [global_data] *)
external realloc_global_boxed : int -> unit = "realloc_coq_global_boxed"
let check_global_boxed n =
if n >= Array.length (global_boxed()) then realloc_global_boxed n
let num_boxed = ref 0
let boxed_tbl = Hashtbl.create 53
let cst_opaque = ref Cpred.full
let is_opaque kn = Cpred.mem kn !cst_opaque
let set_global_boxed kn v =
let n = !num_boxed in
check_global_boxed n;
(global_boxed()).(n) <- (is_opaque kn);
Hashtbl.add boxed_tbl kn n ;
incr num_boxed;
set_global (val_of_constant_def n kn v)
(* table pour les structured_constant et les annotations des switchs *)
let str_cst_tbl = Hashtbl.create 31
(* (structured_constant * int) Hashtbl.t*)
let annot_tbl = Hashtbl.create 31
(* (annot_switch * int) Hashtbl.t *)
(*************************************************************)
(*** Mise a jour des valeurs des variables et des constantes *)
(*************************************************************)
exception NotEvaluated
let key rk =
match !rk with
| Some k -> k
| _ -> raise NotEvaluated
(************************)
(* traduction des patch *)
(* slot_for_*, calcul la valeur de l'objet, la place
dans la table global, rend sa position dans la table *)
let slot_for_str_cst key =
try Hashtbl.find str_cst_tbl key
with Not_found ->
let n = set_global (val_of_str_const key) in
Hashtbl.add str_cst_tbl key n;
n
let slot_for_annot key =
try Hashtbl.find annot_tbl key
with Not_found ->
let n = set_global (Obj.magic key) in
Hashtbl.add annot_tbl key n;
n
let rec slot_for_getglobal env kn =
let (cb,rk) = lookup_constant_key kn env in
try key rk
with NotEvaluated ->
let pos =
match Cemitcodes.force cb.const_body_code with
| BCdefined(boxed,(code,pl,fv)) ->
let v = eval_to_patch env (code,pl,fv) in
if boxed then set_global_boxed kn v
else set_global v
| BCallias kn' -> slot_for_getglobal env kn'
| BCconstant -> set_global (val_of_constant kn) in
rk := Some pos;
pos
and slot_for_fv env fv =
match fv with
| FVnamed id ->
let nv = Pre_env.lookup_named_val id env in
begin
match !nv with
| VKvalue (v,_) -> v
| VKnone ->
let (_, b, _) = Sign.lookup_named id env.env_named_context in
let v,d =
match b with
| None -> (val_of_named id, Idset.empty)
| Some c -> (val_of_constr env c, Environ.global_vars_set (Environ.env_of_pre_env env) c)
in
nv := VKvalue (v,d); v
end
| FVrel i ->
let rv = Pre_env.lookup_rel_val i env in
begin
match !rv with
| VKvalue (v, _) -> v
| VKnone ->
let (_, b, _) = Sign.lookup_rel i env.env_rel_context in
let (v, d) =
match b with
| None -> (val_of_rel i, Idset.empty)
| Some c -> let renv = env_of_rel i env in
(val_of_constr renv c, Environ.global_vars_set (Environ.env_of_pre_env renv) c)
in
rv := VKvalue (v,d); v
end
and eval_to_patch env (buff,pl,fv) =
let patch = function
| Reloc_annot a, pos -> patch_int buff pos (slot_for_annot a)
| Reloc_const sc, pos -> patch_int buff pos (slot_for_str_cst sc)
| Reloc_getglobal kn, pos ->
patch_int buff pos (slot_for_getglobal env kn)
in
List.iter patch pl;
let vm_env = Array.map (slot_for_fv env) fv in
let tc = tcode_of_code buff (length buff) in
eval_tcode tc vm_env
and val_of_constr env c =
let (_,fun_code,_ as ccfv) =
try compile env c
with e -> print_string "can not compile \n";Format.print_flush();raise e in
eval_to_patch env (to_memory ccfv)
let set_transparent_const kn =
cst_opaque := Cpred.remove kn !cst_opaque;
List.iter (fun n -> (global_boxed()).(n) <- false)
(Hashtbl.find_all boxed_tbl kn)
let set_opaque_const kn =
cst_opaque := Cpred.add kn !cst_opaque;
List.iter (fun n -> (global_boxed()).(n) <- true)
(Hashtbl.find_all boxed_tbl kn)
|
