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author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-09-24 21:05:42 +0200 |
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committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-09-24 21:05:42 +0200 |
commit | 3f98eba95b1d0bcb64a07f3188e3623954dc7db3 (patch) | |
tree | 019a13870398c144fa04d7ed5c6a7a9ca4fd0a80 /riscV/Op.v | |
parent | 070d3ba2930e69c83a064ef49f1af0a3fb555e18 (diff) | |
download | compcert-kvx-3f98eba95b1d0bcb64a07f3188e3623954dc7db3.tar.gz compcert-kvx-3f98eba95b1d0bcb64a07f3188e3623954dc7db3.zip |
trapping ops on rv
Diffstat (limited to 'riscV/Op.v')
-rw-r--r-- | riscV/Op.v | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -666,6 +666,36 @@ Proof with (try exact I; try reflexivity; auto using Val.Vptr_has_type). - destruct (eval_condition cond vl m)... destruct b... Qed. + +Definition is_trapping_op (op : operation) := + match op with + | Odiv | Odivl | Odivu | Odivlu + | Omod | Omodl | Omodu | Omodlu + | Oshrximm _ | Oshrxlimm _ + | Ointoffloat | Ointuoffloat + | Ointofsingle | Ointuofsingle + | Olongoffloat | Olonguoffloat + | Olongofsingle | Olonguofsingle + | Osingleofint | Osingleofintu + | Osingleoflong | Osingleoflongu + | Ofloatofint | Ofloatofintu + | Ofloatoflong | Ofloatoflongu => true + | _ => false + end. + +Lemma is_trapping_op_sound: + forall op vl sp m, + op <> Omove -> + is_trapping_op op = false -> + (List.length vl) = (List.length (fst (type_of_operation op))) -> + eval_operation genv sp op vl m <> None. +Proof. + destruct op; intros; simpl in *; try congruence. + all: try (destruct vl as [ | vh1 vl1]; try discriminate). + all: try (destruct vl1 as [ | vh2 vl2]; try discriminate). + all: try (destruct vl2 as [ | vh3 vl3]; try discriminate). + all: try (destruct vl3 as [ | vh4 vl4]; try discriminate). +Qed. End SOUNDNESS. (** * Manipulating and transforming operations *) |