From 35febfa5b231a71234a1b32c128169352e96eaca Mon Sep 17 00:00:00 2001
From: David Monniaux <david.monniaux@univ-grenoble-alpes.fr>
Date: Sat, 7 Sep 2019 12:27:43 +0200
Subject: fixes for ARM

---
 arm/Op.v | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'arm/Op.v')

diff --git a/arm/Op.v b/arm/Op.v
index cc90e043..9de365e9 100644
--- a/arm/Op.v
+++ b/arm/Op.v
@@ -975,6 +975,20 @@ Proof.
   apply Val.offset_ptr_inject; auto.
 Qed.
 
+Lemma eval_addressing_inj_none:
+  forall addr sp1 vl1 sp2 vl2,
+  (forall id ofs,
+      In id (globals_addressing addr) ->
+      Val.inject f (Genv.symbol_address ge1 id ofs) (Genv.symbol_address ge2 id ofs)) ->
+  Val.inject f sp1 sp2 ->
+  Val.inject_list f vl1 vl2 ->
+  eval_addressing ge1 sp1 addr vl1 = None ->
+  eval_addressing ge2 sp2 addr vl2 = None.
+Proof.
+  intros until vl2. intros Hglobal Hinjsp Hinjvl.
+  destruct addr; simpl in *;
+  inv Hinjvl; trivial; try discriminate; inv H0; trivial; try discriminate; inv H2; trivial; try discriminate.
+Qed.
 End EVAL_COMPAT.
 
 (** Compatibility of the evaluation functions with the ``is less defined'' relation over values. *)
@@ -1080,6 +1094,19 @@ Proof.
   destruct H1 as [v2 [A B]]. exists v2; split; auto. rewrite val_inject_lessdef; auto.
 Qed.
 
+Lemma eval_addressing_lessdef_none:
+  forall sp addr vl1 vl2,
+  Val.lessdef_list vl1 vl2 ->
+  eval_addressing genv sp addr vl1 = None ->
+  eval_addressing genv sp addr vl2 = None.
+Proof.
+  intros. rewrite val_inject_list_lessdef in H.
+  eapply eval_addressing_inj_none with (sp1 := sp).
+  intros. rewrite <- val_inject_lessdef; auto.
+  rewrite <- val_inject_lessdef; auto.
+  eauto. auto.
+Qed.
+
 End EVAL_LESSDEF.
 
 (** Compatibility of the evaluation functions with memory injections. *)
@@ -1132,6 +1159,19 @@ Proof.
   econstructor; eauto. rewrite Ptrofs.add_zero_l; auto.
 Qed.
 
+Lemma eval_addressing_inject_none:
+  forall addr vl1 vl2,
+  Val.inject_list f vl1 vl2 ->
+  eval_addressing genv (Vptr sp1 Ptrofs.zero) addr vl1 = None ->
+  eval_addressing genv (Vptr sp2 Ptrofs.zero) (shift_stack_addressing delta addr) vl2 = None.
+Proof.
+  intros.
+  rewrite eval_shift_stack_addressing.
+  eapply eval_addressing_inj_none with (sp1 := Vptr sp1 Ptrofs.zero); eauto.
+  intros. apply symbol_address_inject.
+  econstructor; eauto. rewrite Ptrofs.add_zero_l; auto. 
+Qed.
+
 Lemma eval_operation_inject:
   forall op vl1 vl2 v1 m1 m2,
   Val.inject_list f vl1 vl2 ->
-- 
cgit