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Unified Diff: src/runtime/runtime-internal.cc

Issue 1146963002: Add %GetCallerJSFunction intrinsic (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Review feedback Created 5 years, 6 months ago
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Index: src/runtime/runtime-internal.cc
diff --git a/src/runtime/runtime-internal.cc b/src/runtime/runtime-internal.cc
index e0e583e4021122d75999f9c1de54b5c08da14c00..294e4fb138ea92769546a1270931a80d406e5839 100644
--- a/src/runtime/runtime-internal.cc
+++ b/src/runtime/runtime-internal.cc
@@ -416,5 +416,15 @@ RUNTIME_FUNCTION(Runtime_GetTypeFeedbackVector) {
CONVERT_ARG_CHECKED(JSFunction, function, 0);
return function->shared()->feedback_vector();
}
+
+
+RUNTIME_FUNCTION(Runtime_GetCallerJSFunction) {
+ SealHandleScope shs(isolate);
+ StackFrameIterator it(isolate);
+ RUNTIME_ASSERT(it.frame()->type() == StackFrame::STUB);
+ it.Advance();
+ RUNTIME_ASSERT(it.frame()->type() == StackFrame::JAVA_SCRIPT);
+ return JavaScriptFrame::cast(it.frame())->function();
+}
} // namespace internal
} // namespace v8
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