diff options
Diffstat (limited to 'backend/Stackingproof.v')
| -rw-r--r-- | backend/Stackingproof.v | 55 |
1 files changed, 48 insertions, 7 deletions
diff --git a/backend/Stackingproof.v b/backend/Stackingproof.v index 7724c5d6..6d793961 100644 --- a/backend/Stackingproof.v +++ b/backend/Stackingproof.v @@ -868,7 +868,7 @@ Qed. Remark transl_destroyed_by_op: forall op e, destroyed_by_op (transl_op e op) = destroyed_by_op op. Proof. - intros; destruct op; reflexivity. + intros; destruct op; try reflexivity; simpl. Qed. Remark transl_destroyed_by_load: @@ -1891,12 +1891,13 @@ Proof. apply plus_one. econstructor. instantiate (1 := v'). rewrite <- A. apply eval_operation_preserved. exact symbols_preserved. eauto. - econstructor; eauto with coqlib. - apply agree_regs_set_reg; auto. - rewrite transl_destroyed_by_op. apply agree_regs_undef_regs; auto. - apply agree_locs_set_reg; auto. apply agree_locs_undef_locs. auto. apply destroyed_by_op_caller_save. - apply frame_set_reg. apply frame_undef_regs. exact SEP. - + econstructor; eauto with coqlib; + try (apply agree_regs_set_reg; auto); + (* generic proof *) + solve [ + (rewrite transl_destroyed_by_op; apply agree_regs_undef_regs; auto) | + (apply agree_locs_set_reg; auto; apply agree_locs_undef_locs; auto; apply destroyed_by_op_caller_save) | + (apply frame_set_reg; apply frame_undef_regs; exact SEP) ]. - (* Lload *) assert (exists a', eval_addressing ge (Vptr sp' Ptrofs.zero) (transl_addr (make_env (function_bounds f)) addr) rs0##args = Some a' @@ -1917,6 +1918,46 @@ Proof. apply agree_regs_set_reg. rewrite transl_destroyed_by_load. apply agree_regs_undef_regs; auto. auto. apply agree_locs_set_reg. apply agree_locs_undef_locs. auto. apply destroyed_by_load_caller_save. auto. +- (* Lload notrap1*) + assert (eval_addressing ge (Vptr sp' Ptrofs.zero) (transl_addr (make_env (function_bounds f)) addr) rs0##args = None) as Haddress. + eapply eval_addressing_inject_none; eauto. + eapply globalenv_inject_preserves_globals. eapply sep_proj2. eapply sep_proj2. eapply sep_proj2. eexact SEP. + eapply agree_reglist; eauto. + econstructor; split. + apply plus_one. apply exec_Mload_notrap1. + rewrite <- Haddress. apply eval_addressing_preserved. exact symbols_preserved. + eauto. econstructor; eauto with coqlib. + apply agree_regs_set_reg. rewrite transl_destroyed_by_load. apply agree_regs_undef_regs; auto. auto. + apply agree_locs_set_reg. apply agree_locs_undef_locs. auto. apply destroyed_by_load_caller_save. auto. + +- (* Lload notrap2 *) + assert (exists a', + eval_addressing ge (Vptr sp' Ptrofs.zero) (transl_addr (make_env (function_bounds f)) addr) rs0##args = Some a' + /\ Val.inject j a a'). + eapply eval_addressing_inject; eauto. + eapply globalenv_inject_preserves_globals. eapply sep_proj2. eapply sep_proj2. eapply sep_proj2. eexact SEP. + eapply agree_reglist; eauto. + destruct H1 as [a' [A B]]. + + destruct ( Mem.loadv chunk m' a') as [v'|] eqn:Hloadv. + { + econstructor; split. + apply plus_one. apply exec_Mload with (a:=a') (v:=v'); eauto. + try (rewrite <- A; apply eval_addressing_preserved; auto; exact symbols_preserved). + econstructor; eauto with coqlib. + apply agree_regs_set_reg. rewrite transl_destroyed_by_load. apply agree_regs_undef_regs; auto. auto. + apply agree_locs_set_reg. apply agree_locs_undef_locs. auto. apply destroyed_by_load_caller_save. auto. + } + { + econstructor; split. + apply plus_one. apply exec_Mload_notrap2 with (a:=a'); eauto. + try (rewrite <- A; apply eval_addressing_preserved; auto; exact symbols_preserved). + + econstructor; eauto with coqlib. + apply agree_regs_set_reg. rewrite transl_destroyed_by_load. apply agree_regs_undef_regs; auto. auto. + apply agree_locs_set_reg. apply agree_locs_undef_locs. auto. apply destroyed_by_load_caller_save. auto. + } + - (* Lstore *) assert (exists a', eval_addressing ge (Vptr sp' Ptrofs.zero) (transl_addr (make_env (function_bounds f)) addr) rs0##args = Some a' |