diff options
Diffstat (limited to 'backend/Linear.v')
-rw-r--r-- | backend/Linear.v | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/backend/Linear.v b/backend/Linear.v index e025407a..bf21cb7d 100644 --- a/backend/Linear.v +++ b/backend/Linear.v @@ -46,6 +46,7 @@ Inductive instruction: Type := | Llabel: label -> instruction | Lgoto: label -> instruction | Lcond: condition -> list mreg -> label -> instruction + | Ljumptable: mreg -> list label -> instruction | Lreturn: instruction. Definition code: Type := list instruction. @@ -293,6 +294,13 @@ Inductive step: state -> trace -> state -> Prop := eval_condition cond (reglist rs args) = Some false -> step (State s f sp (Lcond cond args lbl :: b) rs m) E0 (State s f sp b rs m) + | exec_Ljumptable: + forall s f sp arg tbl b rs m n lbl b', + rs (R arg) = Vint n -> + list_nth_z tbl (Int.signed n) = Some lbl -> + find_label lbl f.(fn_code) = Some b' -> + step (State s f sp (Ljumptable arg tbl :: b) rs m) + E0 (State s f sp b' rs m) | exec_Lreturn: forall s f stk b rs m, step (State s f (Vptr stk Int.zero) (Lreturn :: b) rs m) |