WIP

runtime/wasm/effect-native.wat

@@ -15,13 +15,6 @@
       (tag $javascript_exception (param externref)))
    (import "jslib" "caml_wrap_exception"
       (func $caml_wrap_exception (param externref) (result (ref eq))))
-   (import "bindings" "start_fiber" (func $start_fiber (param (ref eq))))
-   (import "bindings" "suspend_fiber"
-      (func $suspend_fiber
-         (param externref) (param $f funcref) (param $env eqref)
-         (result eqref)))
-   (import "bindings" "resume_fiber"
-      (func $resume_fiber (param externref) (param (ref eq))))
    (import "stdlib" "caml_main_wrapper"
       (global $caml_main_wrapper (mut (ref null $wrapper_func))))
 
@@ -54,6 +47,8 @@
          (field $handlers (mut (ref $handlers)))
          (field $cont (ref $cont))))
 
+   ;; Unhandled effects
+
    (@string $effect_unhandled "Effect.Unhandled")
 
    (func $raise_unhandled
@@ -154,7 +149,7 @@
                      (struct.get $fiber $handlers (local.get $fiber))
                      (tuple.extract 2 1 (local.get $resume_res)))
                   (ref.i31 (i32.const 0)))
-               (ref.i31 (i32.const 0)) ;; unused
+               (local.get $tail)
                (local.tee $f
                   (struct.get $handlers $effect
                      (struct.get $fiber $handlers (local.get $fiber))))

runtime/wasm/effect.wat

@@ -211,12 +211,6 @@
             (br $loop)))
       (local.get $k))
 
-   (@string $already_resumed "Effect.Continuation_already_resumed")
-
-   (global $effect_allowed (mut i32) (i32.const 1))
-
-(@if (not wasi)
-(@then
    ;; Resume
 
    (func $do_resume (param $k (ref $cont)) (param $vp (ref eq))
@@ -368,7 +362,6 @@
          (struct.new $handlers (local.get $hv) (local.get $hx) (local.get $hf))
          (struct.new $cont (ref.func $initial_cont))
          (ref.null $fiber)))
-))
 
    ;; Other functions