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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2017-05-17 15:00:55 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2017-05-17 15:00:55 +0200 |
| commit | 7a44249f8256058156053fd56ceb3dbf63426bbe (patch) | |
| tree | dbf310cbe43e91f10248d0496a93d6defa36c6e6 /x86/ConstpropOpproof.v | |
| parent | 7eaaa6aee670b06c427017a9af888d3469e53126 (diff) | |
| download | compcert-kvx-7a44249f8256058156053fd56ceb3dbf63426bbe.tar.gz compcert-kvx-7a44249f8256058156053fd56ceb3dbf63426bbe.zip | |
Issues with invalid x86 addressing modes (Github issue #183)
- x86/Op: in 32-bit mode all addressings are valid because offsets are always interpreted as 32-bit signed integers in Asmgen.
- x86/ConstpropOp: in addr_strength_reduction, make sure no invalid addressing mode is generated.
Diffstat (limited to 'x86/ConstpropOpproof.v')
| -rw-r--r-- | x86/ConstpropOpproof.v | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/x86/ConstpropOpproof.v b/x86/ConstpropOpproof.v index 5eb46e34..ce20738c 100644 --- a/x86/ConstpropOpproof.v +++ b/x86/ConstpropOpproof.v @@ -292,8 +292,10 @@ Lemma addr_strength_reduction_correct: exists res', eval_addressing ge (Vptr sp Ptrofs.zero) addr' e##args' = Some res' /\ Val.lessdef res res'. Proof. unfold eval_addressing, addr_strength_reduction. destruct Archi.ptr64. +- intros until res. destruct (addressing_valid (fst (addr_strength_reduction_64 addr args vl))). apply addr_strength_reduction_64_correct. - apply addr_strength_reduction_32_correct. + intros; exists res; auto. +- apply addr_strength_reduction_32_correct. Qed. Lemma make_cmp_base_correct: |