Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/js/src/vm/FrameIter-inl.h b/js/src/vm/FrameIter-inl.h
new file mode 100644
index 0000000000..59b5f685e6
--- /dev/null
+++ b/js/src/vm/FrameIter-inl.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_FrameIter_inl_h
+#define vm_FrameIter_inl_h
+
+#include "vm/FrameIter.h"
+
+#include "mozilla/Assertions.h"  // MOZ_ASSERT, MOZ_CRASH
+
+#include "jit/JSJitFrameIter.h"  // js::jit::{InlineFrameIterator,MaybeReadFallback,ReadFrame_Actuals}
+#include "vm/Stack.h"  // js::InterpreterFrame
+
+#include "vm/Stack-inl.h"  // js::InterpreterFrame::unaliasedForEachActual
+
+namespace js {
+
+template <class Op>
+inline void FrameIter::unaliasedForEachActual(JSContext* cx, Op op) {
+  switch (data_.state_) {
+    case DONE:
+      break;
+    case INTERP:
+      interpFrame()->unaliasedForEachActual(op);
+      return;
+    case JIT:
+      MOZ_ASSERT(isJSJit());
+      if (jsJitFrame().isIonJS()) {
+        jit::MaybeReadFallback recover(cx, activation()->asJit(),
+                                       &jsJitFrame());
+        ionInlineFrames_.unaliasedForEachActual(cx, op, jit::ReadFrame_Actuals,
+                                                recover);
+      } else if (jsJitFrame().isBailoutJS()) {
+        // :TODO: (Bug 1070962) If we are introspecting the frame which is
+        // being bailed, then we might be in the middle of recovering
+        // instructions. Stacking computeInstructionResults implies that we
+        // might be recovering result twice. In the mean time, to avoid
+        // that, we just return Undefined values for instruction results
+        // which are not yet recovered.
+        jit::MaybeReadFallback fallback;
+        ionInlineFrames_.unaliasedForEachActual(cx, op, jit::ReadFrame_Actuals,
+                                                fallback);
+      } else {
+        MOZ_ASSERT(jsJitFrame().isBaselineJS());
+        jsJitFrame().unaliasedForEachActual(op, jit::ReadFrame_Actuals);
+      }
+      return;
+  }
+  MOZ_CRASH("Unexpected state");
+}
+
+}  // namespace js
+
+#endif  // vm_FrameIter_inl_h