Merge of the newmem and newextcalls branches:

- Revised memory model with concrete representation of ints & floats,
  and per-byte access permissions
- Revised Globalenvs implementation
- Matching changes in all languages and proofs.


git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1282 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

9 files changed, 27 insertions, 27 deletions

diff --git a/arm/Asm.v b/arm/Asm.v
index e8503bbd..e689c20c 100644
--- a/arm/Asm.v
+++ b/arm/Asm.v
@@ -18,7 +18,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Events.
 Require Import Globalenvs.
 Require Import Smallstep.
@@ -233,7 +233,7 @@ Module Pregmap := EMap(PregEq).
   and condition bits to either [Vzero] or [Vone]. *)
   
 Definition regset := Pregmap.t val.
-Definition genv := Genv.t fundef.
+Definition genv := Genv.t fundef unit.
 
 Notation "a # b" := (a b) (at level 1, only parsing).
 Notation "a # b <- c" := (Pregmap.set b c a) (at level 1, b at next level).
@@ -609,28 +609,28 @@ Inductive step: state -> trace -> state -> Prop :=
       exec_instr c i rs m = OK rs' m' ->
       step (State rs m) E0 (State rs' m')
   | exec_step_external:
-      forall b ef args res rs m t rs',
+      forall b ef args res rs m t rs' m',
       rs PC = Vptr b Int.zero ->
       Genv.find_funct_ptr ge b = Some (External ef) ->
-      event_match ef args t res ->
+      external_call ef args m t res m' ->
       extcall_arguments rs m ef.(ef_sig) args ->
       rs' = (rs#(loc_external_result ef.(ef_sig)) <- res
                #PC <- (rs IR14)) ->
-      step (State rs m) t (State rs' m).
+      step (State rs m) t (State rs' m').
 
 End RELSEM.
 
 (** Execution of whole programs. *)
 
 Inductive initial_state (p: program): state -> Prop :=
-  | initial_state_intro:
+  | initial_state_intro: forall m0,
       let ge := Genv.globalenv p in
-      let m0 := Genv.init_mem p in
       let rs0 :=
         (Pregmap.init Vundef)
         # PC <- (symbol_offset ge p.(prog_main) Int.zero)
         # IR14 <- Vzero
         # IR13 <- (Vptr Mem.nullptr Int.zero) in
+      Genv.init_mem p = Some m0 ->
       initial_state p (State rs0 m0).
 
 Inductive final_state: state -> int -> Prop :=
diff --git a/arm/Asmgen.v b/arm/Asmgen.v
index 8e0805fe..069a08a2 100644
--- a/arm/Asmgen.v
+++ b/arm/Asmgen.v
@@ -19,7 +19,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Globalenvs.
 Require Import Op.
 Require Import Locations.
diff --git a/arm/Asmgenproof.v b/arm/Asmgenproof.v
index db84d64b..0260feb2 100644
--- a/arm/Asmgenproof.v
+++ b/arm/Asmgenproof.v
@@ -19,7 +19,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Events.
 Require Import Globalenvs.
 Require Import Smallstep.
diff --git a/arm/Asmgenproof1.v b/arm/Asmgenproof1.v
index 07764136..fc2ce7fa 100644
--- a/arm/Asmgenproof1.v
+++ b/arm/Asmgenproof1.v
@@ -18,7 +18,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Globalenvs.
 Require Import Op.
 Require Import Locations.
diff --git a/arm/Asmgenretaddr.v b/arm/Asmgenretaddr.v
index 72d855a9..359aaf27 100644
--- a/arm/Asmgenretaddr.v
+++ b/arm/Asmgenretaddr.v
@@ -22,7 +22,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Globalenvs.
 Require Import Op.
 Require Import Locations.
diff --git a/arm/ConstpropOpproof.v b/arm/ConstpropOpproof.v
index b718fc26..9778acef 100644
--- a/arm/ConstpropOpproof.v
+++ b/arm/ConstpropOpproof.v
@@ -17,7 +17,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Globalenvs.
 Require Import Op.
 Require Import Registers.
diff --git a/arm/Op.v b/arm/Op.v
index da9903bd..51ce0024 100644
--- a/arm/Op.v
+++ b/arm/Op.v
@@ -29,7 +29,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Globalenvs.
 
 Set Implicit Arguments.
@@ -217,7 +217,7 @@ Definition offset_sp (sp: val) (delta: int) : option val :=
   end.
 
 Definition eval_operation
-    (F: Type) (genv: Genv.t F) (sp: val)
+    (F V: Type) (genv: Genv.t F V) (sp: val)
     (op: operation) (vl: list val): option val :=
   match op, vl with
   | Omove, v1::nil => Some v1
@@ -301,7 +301,7 @@ Definition eval_operation
   end.
 
 Definition eval_addressing
-    (F: Type) (genv: Genv.t F) (sp: val)
+    (F V: Type) (genv: Genv.t F V) (sp: val)
     (addr: addressing) (vl: list val) : option val :=
   match addr, vl with
   | Aindexed n, Vptr b1 n1 :: nil =>
@@ -382,9 +382,9 @@ Qed.
 
 Section GENV_TRANSF.
 
-Variable F1 F2: Type.
-Variable ge1: Genv.t F1.
-Variable ge2: Genv.t F2.
+Variable F1 F2 V1 V2: Type.
+Variable ge1: Genv.t F1 V1.
+Variable ge2: Genv.t F2 V2.
 Hypothesis agree_on_symbols:
   forall (s: ident), Genv.find_symbol ge2 s = Genv.find_symbol ge1 s.
 
@@ -523,8 +523,8 @@ Definition type_of_chunk (c: memory_chunk) : typ :=
 
 Section SOUNDNESS.
 
-Variable A: Type.
-Variable genv: Genv.t A.
+Variable A V: Type.
+Variable genv: Genv.t A V.
 
 Lemma type_of_operation_sound:
   forall op vl sp v,
@@ -584,8 +584,8 @@ End SOUNDNESS.
 
 Section EVAL_OP_TOTAL.
 
-Variable F: Type.
-Variable genv: Genv.t F.
+Variable F V: Type.
+Variable genv: Genv.t F V.
 
 Definition find_symbol_offset (id: ident) (ofs: int) : val :=
   match Genv.find_symbol genv id with
@@ -774,8 +774,8 @@ End EVAL_OP_TOTAL.
 
 Section EVAL_LESSDEF.
 
-Variable F: Type.
-Variable genv: Genv.t F.
+Variable F V: Type.
+Variable genv: Genv.t F V.
 
 Ltac InvLessdef :=
   match goal with
@@ -900,7 +900,7 @@ Definition op_for_binary_addressing (addr: addressing) : operation :=
   end.
 
 Lemma eval_op_for_binary_addressing:
-  forall (F: Type) (ge: Genv.t F) sp addr args v,
+  forall (F V: Type) (ge: Genv.t F V) sp addr args v,
   (length args >= 2)%nat ->
   eval_addressing ge sp addr args = Some v ->
   eval_operation ge sp (op_for_binary_addressing addr) args = Some v.
diff --git a/arm/SelectOp.v b/arm/SelectOp.v
index abf39aff..66c12999 100644
--- a/arm/SelectOp.v
+++ b/arm/SelectOp.v
@@ -42,7 +42,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Globalenvs.
 Require Cminor.
 Require Import Op.
diff --git a/arm/SelectOpproof.v b/arm/SelectOpproof.v
index 32aba30c..b2603466 100644
--- a/arm/SelectOpproof.v
+++ b/arm/SelectOpproof.v
@@ -18,7 +18,7 @@ Require Import AST.
 Require Import Integers.
 Require Import Floats.
 Require Import Values.
-Require Import Mem.
+Require Import Memory.
 Require Import Events.
 Require Import Globalenvs.
 Require Import Smallstep.