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/Linearizeproof.v | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'backend/Linearizeproof.v') diff --git a/backend/Linearizeproof.v b/backend/Linearizeproof.v index 3b22fc68..63fa6565 100644 --- a/backend/Linearizeproof.v +++ b/backend/Linearizeproof.v @@ -62,6 +62,11 @@ Lemma symbols_preserved: Genv.find_symbol tge id = Genv.find_symbol ge id. Proof (Genv.find_symbol_transf_partial transf_fundef _ TRANSF). +Lemma public_preserved: + forall id, + Genv.public_symbol tge id = Genv.public_symbol ge id. +Proof (Genv.public_symbol_transf_partial transf_fundef _ TRANSF). + Lemma varinfo_preserved: forall b, Genv.find_var_info tge b = Genv.find_var_info ge b. Proof (Genv.find_var_info_transf_partial transf_fundef _ TRANSF). @@ -640,14 +645,14 @@ Proof. left; econstructor; split. simpl. apply plus_one. eapply exec_Lbuiltin; eauto. eapply external_call_symbols_preserved'; eauto. - exact symbols_preserved. exact varinfo_preserved. + exact symbols_preserved. exact public_preserved. exact varinfo_preserved. econstructor; eauto. (* Lannot *) left; econstructor; split. simpl. apply plus_one. eapply exec_Lannot; eauto. eapply external_call_symbols_preserved'; eauto. - exact symbols_preserved. exact varinfo_preserved. + exact symbols_preserved. exact public_preserved. exact varinfo_preserved. econstructor; eauto. (* Lbranch *) @@ -705,7 +710,7 @@ Proof. monadInv H8. left; econstructor; split. apply plus_one. 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. econstructor; eauto. (* return *) @@ -741,7 +746,7 @@ Theorem transf_program_correct: forward_simulation (LTL.semantics prog) (Linear.semantics tprog). Proof. eapply forward_simulation_star. - eexact symbols_preserved. + eexact public_preserved. eexact transf_initial_states. eexact transf_final_states. eexact transf_step_correct. -- cgit