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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2010-05-10 15:35:02 +0000 |
|---|---|---|
| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2010-05-10 15:35:02 +0000 |
| commit | 7999c9ee1f09f7d555e3efc39f030564f76a3354 (patch) | |
| tree | 6f7937811f9331e3a5f5cdaa59be899c0daf71d3 /arm/Asmgenproof.v | |
| parent | df80f5b3745b5d85cbf42601f9532618c063d703 (diff) | |
| download | compcert-kvx-7999c9ee1f09f7d555e3efc39f030564f76a3354.tar.gz compcert-kvx-7999c9ee1f09f7d555e3efc39f030564f76a3354.zip | |
- Extended traces so that pointers within globals are supported as event values.
- Revised handling of volatile reads: the execution environment
dictates the value read, via the trace of events.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1345 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'arm/Asmgenproof.v')
| -rw-r--r-- | arm/Asmgenproof.v | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/arm/Asmgenproof.v b/arm/Asmgenproof.v index eec0c655..0a1180c6 100644 --- a/arm/Asmgenproof.v +++ b/arm/Asmgenproof.v @@ -1130,14 +1130,25 @@ Proof. econstructor; eauto with coqlib. Qed. -Lemma exec_function_external_prop:
forall (s : list stackframe) (fb : block) (ms : Mach.regset)
(m : mem) (t0 : trace) (ms' : RegEq.t -> val)
(ef : external_function) (args : list val) (res : val) (m': mem),
Genv.find_funct_ptr ge fb = Some (External ef) ->
external_call ef args m t0 res m' ->
Machconcr.extcall_arguments ms m (parent_sp s) (ef_sig ef) args ->
ms' = Regmap.set (Conventions.loc_result (ef_sig ef)) res ms ->
exec_instr_prop (Machconcr.Callstate s fb ms m)
t0 (Machconcr.Returnstate s ms' m').
Proof. +Lemma exec_function_external_prop: + forall (s : list stackframe) (fb : block) (ms : Mach.regset) + (m : mem) (t0 : trace) (ms' : RegEq.t -> val) + (ef : external_function) (args : list val) (res : val) (m': mem), + Genv.find_funct_ptr ge fb = Some (External ef) -> + external_call ef (Genv.find_symbol ge) args m t0 res m' -> + Machconcr.extcall_arguments ms m (parent_sp s) (ef_sig ef) args -> + ms' = Regmap.set (Conventions.loc_result (ef_sig ef)) res ms -> + exec_instr_prop (Machconcr.Callstate s fb ms m) + t0 (Machconcr.Returnstate s ms' m'). +Proof. intros; red; intros; inv MS. exploit functions_translated; eauto. intros [tf [A B]]. simpl in B. inv B. left; exists (State (rs#(loc_external_result (ef_sig ef)) <- res #PC <- (rs IR14)) m'); split. - apply plus_one. eapply exec_step_external; eauto. - eauto. eapply extcall_arguments_match; eauto. + apply plus_one. eapply exec_step_external; eauto. + eapply external_call_symbols_preserved; eauto. exact symbols_preserved. + eapply extcall_arguments_match; eauto. econstructor; eauto. unfold loc_external_result. auto with ppcgen. Qed. |