freescale porting

[helm.git] / helm / software / matita / contribs / ng_assembly / emulator / read_write / IP2022_load_write.ma

diff --git a/helm/software/matita/contribs/ng_assembly/emulator/read_write/IP2022_load_write.ma b/helm/software/matita/contribs/ng_assembly/emulator/read_write/IP2022_load_write.ma
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+(**************************************************************************)
+(*       ___                                                              *)
+(*      ||M||                                                             *)
+(*      ||A||       A project by Andrea Asperti                           *)
+(*      ||T||                                                             *)
+(*      ||I||       Developers:                                           *)
+(*      ||T||         The HELM team.                                      *)
+(*      ||A||         http://helm.cs.unibo.it                             *)
+(*      \   /                                                             *)
+(*       \ /        This file is distributed under the terms of the       *)
+(*        v         GNU General Public License Version 2                  *)
+(*                                                                        *)
+(**************************************************************************)
+
+(* ********************************************************************** *)
+(*                          Progetto FreeScale                            *)
+(*                                                                        *)
+(*   Sviluppato da: Ing. Cosimo Oliboni, oliboni@cs.unibo.it              *)
+(*   Sviluppo: 2008-2010                                                  *)
+(*                                                                        *)
+(* ********************************************************************** *)
+
+include "emulator/read_write/load_write_base.ma".
+include "emulator/status/status_getter.ma".
+
+(* lettura da [PC<<1 - 1] : argomento non caricato dal fetch word-aligned *)
+ndefinition mode_IMM1_load ≝
+λt:memory_impl.λs:any_status IP2022 t.
+ mem_read_s … s (rol_w32 〈〈〈x8,x1〉:〈x0,x0〉〉.(pred_w16 (get_pc_reg … s))〉).
+
+(* lettura da [ADDR] *)
+ndefinition mode_ADDR_load ≝
+λt:memory_impl.λs:any_status IP2022 t.
+ opt_map … (get_addr_reg … s)
+  (λaddr.match (eq_b8 (w24x addr) 〈x0,x1〉) ⊗ (le_w16 (pred_w16 (get_pc_reg … s)) 〈〈x1,xF〉:〈xF,xF〉〉) with
+   (* lettura della FLASH da codice in RAM : operazione non bloccante non implementata! *)
+   [ true ⇒ None ?
+   | false ⇒ opt_map … (memory_filter_read … s 〈〈〈x0,x2〉:(w24x addr)〉.〈(w24h addr):(w24l addr)〉〉)
+             (λbh.opt_map … (memory_filter_read … s 〈〈〈x0,x2〉:(w24x (succ_w24 addr))〉.〈(w24h (succ_w24 addr)):(w24l (succ_w24 addr))〉〉)
+              (λbl.Some ? 〈bh:bl〉))]).
+
+(* scrittura su [ADDR] *)
+ndefinition mode_ADDR_write ≝
+λt:memory_impl.λs:any_status IP2022 t.λval:word16.
+ opt_map … (get_addr_reg … s)
+  (λaddr.opt_map … (memory_filter_write … s 〈〈〈x0,x2〉:(w24x addr)〉.〈(w24h addr):(w24l addr)〉〉 auxMode_ok (cnH ? val))
+   (λs'.memory_filter_write … s' 〈〈〈x0,x2〉:(w24x (succ_w24 addr))〉.〈(w24h (succ_w24 addr)):(w24l (succ_w24 addr))〉〉 auxMode_ok (cnL ? val))).
+
+(* IMM1 > 0 : lettura/scrittura da [IMM1] *)
+(* else     : lettura/scrittura da [IP] : IP ≥ 0x20 *)
+ndefinition mode_DIR1IP_aux ≝
+λt:memory_impl.λs:any_status IP2022 t.λT.λf:word32 → option T.
+ opt_map … (mode_IMM1_load t s)
+  (λaddr.match eq_b8 addr 〈x0,x0〉 with
+   (* xxxxxxx0 00000000 → [IP] *)
+   [ true ⇒ opt_map … (get_ip_reg … s)
+             (λip.match ge_w16 ip 〈〈x0,x0〉:〈x2,x0〉〉 with
+              (* IP ≥ 0x20 *)
+              [ true ⇒ f (extu_w32 ip)
+              | false ⇒ None ? ])
+   (* xxxxxxx0 nnnnnnnn → [IMM1] *)
+   | false ⇒ f (extu2_w32 addr)
+   ]).
+
+(* IMM1 < 0x80 : lettura/scrittura da [DP+IMM1] : DP+IMM1 ≥ 0x20 *)
+(* else        : lettura/scrittura da [SP+IMM1] : SP+IMM1 ≥ 0x20 *)
+ndefinition mode_DPSP_aux ≝
+λt:memory_impl.λs:any_status IP2022 t.λT.λf:word32 → option T.
+ opt_map … (mode_IMM1_load t s)
+  (λaddr.opt_map … (match getMSB_b8 addr with
+                    (* xxxxxxx1 1nnnnnnn → [SP+IMM1] *)
+                    [ true ⇒ get_sp_reg … s
+                    (* xxxxxxx1 0nnnnnnn → [DP+IMM1] *)
+                    | false ⇒ get_dp_reg … s ])
+   (λreg.match ge_w16 (plus_w16_d_d reg (extu_w16 (clrMSB_b8 addr))) 〈〈x0,x0〉:〈x2,x0〉〉 with
+    (* reg+IMM1 ≥ 0x20 *)
+    [ true ⇒ f (extu_w32 (plus_w16_d_d reg (extu_w16 (clrMSB_b8 addr))))
+    | false ⇒ None ? ])).
+
+(* FR0 *)
+ndefinition mode_FR0_load ≝
+λt:memory_impl.λs:any_status IP2022 t.
+ mode_DIR1IP_aux t s byte8 (memory_filter_read … s).
+
+ndefinition mode_FR0n_load ≝
+λt:memory_impl.λs:any_status IP2022 t.λsub:oct.
+ mode_DIR1IP_aux t s bool (λaddr.memory_filter_read_bit … s addr sub).
+
+ndefinition mode_FR0_write ≝
+λt:memory_impl.λs:any_status IP2022 t.λflag:aux_mod_type.λval:byte8.
+ mode_DIR1IP_aux t s (any_status IP2022 t) (λaddr.memory_filter_write … s addr flag val).
+
+ndefinition mode_FR0n_write ≝
+λt:memory_impl.λs:any_status IP2022 t.λsub:oct.λval:bool.
+ mode_DIR1IP_aux t s (any_status IP2022 t) (λaddr.memory_filter_write_bit … s addr sub val).
+
+(* FR1 *)
+ndefinition mode_FR1_load ≝
+λt:memory_impl.λs:any_status IP2022 t.
+ mode_DPSP_aux t s byte8 (memory_filter_read … s).
+
+ndefinition mode_FR1n_load ≝
+λt:memory_impl.λs:any_status IP2022 t.λsub:oct.
+ mode_DPSP_aux t s bool (λaddr.memory_filter_read_bit … s addr sub).
+
+ndefinition mode_FR1_write ≝
+λt:memory_impl.λs:any_status IP2022 t.λflag:aux_mod_type.λval:byte8.
+ mode_DPSP_aux t s (any_status IP2022 t) (λaddr.memory_filter_write … s addr flag val).
+
+ndefinition mode_FR1n_write ≝
+λt:memory_impl.λs:any_status IP2022 t.λsub:oct.λval:bool.
+ mode_DPSP_aux t s (any_status IP2022 t) (λaddr.memory_filter_write_bit … s addr sub val).