From ad8c37d0ebb36cb2e54baeacf5a4c7ff145b1a99 Mon Sep 17 00:00:00 2001 From: Xavier Leroy Date: Mon, 3 Nov 2014 17:40:22 +0100 Subject: Add Genv.public_symbol operation. Restrict pointer event values to public global names. Update proofs accordingly. PowerPC and ARM need updating. --- backend/Renumberproof.v | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'backend/Renumberproof.v') diff --git a/backend/Renumberproof.v b/backend/Renumberproof.v index f18d3c2e..19c3b680 100644 --- a/backend/Renumberproof.v +++ b/backend/Renumberproof.v @@ -47,6 +47,11 @@ Lemma symbols_preserved: Genv.find_symbol tge id = Genv.find_symbol ge id. Proof (@Genv.find_symbol_transf _ _ _ transf_fundef prog). +Lemma public_preserved: + forall id, + Genv.public_symbol tge id = Genv.public_symbol ge id. +Proof (@Genv.public_symbol_transf _ _ _ transf_fundef prog). + Lemma varinfo_preserved: forall b, Genv.find_var_info tge b = Genv.find_var_info ge b. Proof (@Genv.find_var_info_transf _ _ _ transf_fundef prog). @@ -194,7 +199,7 @@ Proof. econstructor; split. eapply exec_Ibuiltin; eauto. eapply external_call_symbols_preserved; eauto. - exact symbols_preserved. exact varinfo_preserved. + exact symbols_preserved. exact public_preserved. exact varinfo_preserved. constructor; auto. eapply reach_succ; eauto. simpl; auto. (* cond *) econstructor; split. @@ -219,7 +224,7 @@ Proof. econstructor; split. eapply exec_function_external; eauto. eapply external_call_symbols_preserved; eauto. - exact symbols_preserved. exact varinfo_preserved. + exact symbols_preserved. exact public_preserved. exact varinfo_preserved. constructor; auto. (* return *) inv STACKS. inv H1. @@ -251,7 +256,7 @@ Theorem transf_program_correct: forward_simulation (RTL.semantics prog) (RTL.semantics tprog). Proof. eapply forward_simulation_step. - eexact symbols_preserved. + eexact public_preserved. eexact transf_initial_states. eexact transf_final_states. exact step_simulation. -- cgit