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| author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-09-05 11:19:22 +0200 |
|---|---|---|
| committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-09-05 11:19:22 +0200 |
| commit | c4cc75dc6abcb0eee6f3288e96fea4aec540fd68 (patch) | |
| tree | e63d0437c3f3cb43eb26cced8ad94acc62e82dad /backend/Linear.v | |
| parent | 7042070a3668ae149ec6a490b8e7c1a6aa82d6fe (diff) | |
| download | compcert-kvx-c4cc75dc6abcb0eee6f3288e96fea4aec540fd68.tar.gz compcert-kvx-c4cc75dc6abcb0eee6f3288e96fea4aec540fd68.zip | |
more proofs going through
Diffstat (limited to 'backend/Linear.v')
| -rw-r--r-- | backend/Linear.v | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/backend/Linear.v b/backend/Linear.v index 447c6ba6..1443f795 100644 --- a/backend/Linear.v +++ b/backend/Linear.v @@ -28,7 +28,7 @@ Inductive instruction: Type := | Lgetstack: slot -> Z -> typ -> mreg -> instruction | Lsetstack: mreg -> slot -> Z -> typ -> instruction | Lop: operation -> list mreg -> mreg -> instruction - | Lload: memory_chunk -> addressing -> list mreg -> mreg -> instruction + | Lload: trapping_mode -> memory_chunk -> addressing -> list mreg -> mreg -> instruction | Lstore: memory_chunk -> addressing -> list mreg -> mreg -> instruction | Lcall: signature -> mreg + ident -> instruction | Ltailcall: signature -> mreg + ident -> instruction @@ -160,11 +160,28 @@ Inductive step: state -> trace -> state -> Prop := step (State s f sp (Lop op args res :: b) rs m) E0 (State s f sp b rs' m) | exec_Lload: - forall s f sp chunk addr args dst b rs m a v rs', + forall s f sp trap chunk addr args dst b rs m a v rs', eval_addressing ge sp addr (reglist rs args) = Some a -> Mem.loadv chunk m a = Some v -> rs' = Locmap.set (R dst) v (undef_regs (destroyed_by_load chunk addr) rs) -> - step (State s f sp (Lload chunk addr args dst :: b) rs m) + step (State s f sp (Lload trap chunk addr args dst :: b) rs m) + E0 (State s f sp b rs' m) + | exec_Lload_notrap1: + forall s f sp chunk addr args dst b rs m rs', + eval_addressing ge sp addr (reglist rs args) = None -> + rs' = Locmap.set (R dst) + (default_notrap_load_value chunk) + (undef_regs (destroyed_by_load chunk addr) rs) -> + step (State s f sp (Lload NOTRAP chunk addr args dst :: b) rs m) + E0 (State s f sp b rs' m) + | exec_Lload_notrap2: + forall s f sp chunk addr args dst b rs m a rs', + eval_addressing ge sp addr (reglist rs args) = Some a -> + Mem.loadv chunk m a = None -> + rs' = Locmap.set (R dst) + (default_notrap_load_value chunk) + (undef_regs (destroyed_by_load chunk addr) rs) -> + step (State s f sp (Lload NOTRAP chunk addr args dst :: b) rs m) E0 (State s f sp b rs' m) | exec_Lstore: forall s f sp chunk addr args src b rs m m' a rs', |