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-rw-r--r--backend/LTLin.v10
1 files changed, 8 insertions, 2 deletions
diff --git a/backend/LTLin.v b/backend/LTLin.v
index 806a7aa9..ee4cb943 100644
--- a/backend/LTLin.v
+++ b/backend/LTLin.v
@@ -47,6 +47,7 @@ Inductive instruction: Type :=
| Lstore: memory_chunk -> addressing -> list loc -> loc -> instruction
| Lcall: signature -> loc + ident -> list loc -> loc -> instruction
| Ltailcall: signature -> loc + ident -> list loc -> instruction
+ | Lbuiltin: external_function -> list loc -> loc -> instruction
| Llabel: label -> instruction
| Lgoto: label -> instruction
| Lcond: condition -> list loc -> label -> instruction
@@ -68,8 +69,8 @@ Definition program := AST.program fundef unit.
Definition funsig (fd: fundef) :=
match fd with
- | Internal f => f.(fn_sig)
- | External ef => ef.(ef_sig)
+ | Internal f => fn_sig f
+ | External ef => ef_sig ef
end.
Definition genv := Genv.t fundef unit.
@@ -186,6 +187,11 @@ Inductive step: state -> trace -> state -> Prop :=
Mem.free m stk 0 f.(fn_stacksize) = Some m' ->
step (State s f (Vptr stk Int.zero) (Ltailcall sig ros args :: b) rs m)
E0 (Callstate s f' (List.map rs args) m')
+ | exec_Lbuiltin:
+ forall s f sp rs m ef args res b t v m',
+ external_call ef ge (map rs args) m t v m' ->
+ step (State s f sp (Lbuiltin ef args res :: b) rs m)
+ t (State s f sp b (Locmap.set res v rs) m')
| exec_Llabel:
forall s f sp lbl b rs m,
step (State s f sp (Llabel lbl :: b) rs m)