1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 (* ********************************************************************** *)
16 (* Progetto FreeScale *)
19 (* Cosimo Oliboni, oliboni@cs.unibo.it *)
21 (* Questo materiale fa parte della tesi: *)
22 (* "Formalizzazione Interattiva dei Microcontroller a 8bit FreeScale" *)
24 (* data ultima modifica 15/11/2007 *)
25 (* ********************************************************************** *)
27 include "freescale/memory_struct.ma".
28 include "freescale/word16.ma".
29 include "freescale/option.ma".
30 include "freescale/theory.ma".
32 (* ********************* *)
33 (* MEMORIA E DESCRITTORE *)
34 (* ********************* *)
36 (* (mf_check_update_ranged chk inf sup mode) = setta tipo memoria *)
37 ndefinition mf_check_update_ranged ≝
38 λf:word16 → memory_type.λi.λs.λv.
39 λx.match in_range x i s with
43 (* tutta la memoria non installata *)
44 ndefinition mf_out_of_bound_memory ≝ λ_:word16.MEM_OUT_OF_BOUND.
46 ndefinition mf_chk_get ≝
47 λc:word16 → memory_type.λa:word16.
49 [ MEM_READ_ONLY ⇒ array_8T ? MEM_READ_ONLY MEM_READ_ONLY MEM_READ_ONLY MEM_READ_ONLY MEM_READ_ONLY MEM_READ_ONLY MEM_READ_ONLY MEM_READ_ONLY
50 | MEM_READ_WRITE ⇒ array_8T ? MEM_READ_WRITE MEM_READ_WRITE MEM_READ_WRITE MEM_READ_WRITE MEM_READ_WRITE MEM_READ_WRITE MEM_READ_WRITE MEM_READ_WRITE
51 | MEM_OUT_OF_BOUND ⇒ array_8T ? MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND MEM_OUT_OF_BOUND
54 (* (mf_mem_update mem checked addr val) = scrivi controllando il tipo di memoria *)
55 ndefinition mf_mem_update ≝
56 λf:word16 → byte8.λc:Array8T memory_type.λa:word16.λv:byte8.
57 match getn_array8T o0 ? c with
58 (* ROM? ok, ma il valore viene perso *)
59 [ MEM_READ_ONLY ⇒ Some ? f
61 | MEM_READ_WRITE ⇒ Some ? (λx.match eq_w16 x a with [ true ⇒ v | false ⇒ f x ])
62 (* NON INSTALLATA? no *)
63 | MEM_OUT_OF_BOUND ⇒ None ? ].
65 (* tutta la memoria a 0 *)
66 ndefinition mf_zero_memory ≝ λ_:word16.〈x0,x0〉.
68 (* (mf_mem_read mem check addr) = leggi controllando il tipo di memoria *)
69 ndefinition mf_mem_read ≝
70 λf:word16 → byte8.λc:word16 → memory_type.λa.
72 [ MEM_READ_ONLY ⇒ Some ? (f a)
73 | MEM_READ_WRITE ⇒ Some ? (f a)
74 | MEM_OUT_OF_BOUND ⇒ None ? ].
76 (* ************************** *)
77 (* CARICAMENTO PROGRAMMA/DATI *)
78 (* ************************** *)
80 (* carica a paratire da addr, scartando source (pescando da old_mem) se si supera 0xFFFF... *)
81 nlet rec mf_load_from_source_at (old_mem:word16 → byte8) (source:list byte8) (addr:word16) on source ≝
83 (* fine di source: carica da old_mem *)
85 | cons hd tl ⇒ λx:word16.match lt_w16 x addr with
86 (* e' prima di source: carica da old_mem *)
88 | false ⇒ match eq_w16 x addr with
89 (* la locazione corrisponde al punto corrente di source *)
91 (* la locazione e' piu' avanti: ricorsione *)
92 | false ⇒ (mf_load_from_source_at old_mem tl (plus_w16_d_d addr 〈〈x0,x0〉:〈x0,x1〉〉)) x