[wasm] Disassemble wasm code from script

src/debug/debug.cc

Index: src/debug/debug.cc
diff --git a/src/debug/debug.cc b/src/debug/debug.cc
index 7287ceb1865ab214ad49bfbfd08d2a87f13b8733..2933b8b92fbba92c83dcf87485013a650ad4c083 100644
--- a/src/debug/debug.cc
+++ b/src/debug/debug.cc
@@ -809,7 +809,8 @@ bool Debug::SetBreakPointForScript(Handle<Script> script,
                                    int* source_position,
                                    BreakPositionAlignment alignment) {
   if (script->type() == Script::TYPE_WASM) {
-    // TODO(clemensh): set breakpoint for wasm.
+    return wasm::GetDebugInfo(JSObject::cast(script->wasm_object()))
+        ->SetBreakPoint(*source_position);

[Yang, 2016/06/17 18:16:31]

The reason we pass in a pointer for source_position is because the actual break
location may not be at the exact specified source position, so we reflect the
change through this by-reference argument.

Is it possible to set break points at arbitrary code offsets for wasm?

Also, does this actually already work? I don't see any test case for this.

[Clemens Hammacher, 2016/06/24 15:12:33]

No, the called function just returned false.
I thus removed it for now, and just return false here immediately.

   }
   HandleScope scope(isolate_);