Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

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

1 files changed, 131 insertions, 0 deletions

diff --git a/js/src/jit/BaselineFrame-inl.h b/js/src/jit/BaselineFrame-inl.h
new file mode 100644
index 0000000000..73eb9026ac
--- /dev/null
+++ b/js/src/jit/BaselineFrame-inl.h
@@ -0,0 +1,131 @@
+/* -*- 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 jit_BaselineFrame_inl_h
+#define jit_BaselineFrame_inl_h
+
+#include "jit/BaselineFrame.h"
+
+#include "jit/TrialInlining.h"
+#include "vm/JSContext.h"
+#include "vm/Realm.h"
+
+#include "vm/EnvironmentObject-inl.h"
+#include "vm/JSScript-inl.h"
+#include "vm/NativeObject-inl.h"  // js::NativeObject::initDenseElementsFromRange
+
+namespace js {
+namespace jit {
+
+template <typename SpecificEnvironment>
+inline void BaselineFrame::pushOnEnvironmentChain(SpecificEnvironment& env) {
+  MOZ_ASSERT(*environmentChain() == env.enclosingEnvironment());
+  envChain_ = &env;
+  if (IsFrameInitialEnvironment(this, env)) {
+    flags_ |= HAS_INITIAL_ENV;
+  }
+}
+
+template <typename SpecificEnvironment>
+inline void BaselineFrame::popOffEnvironmentChain() {
+  MOZ_ASSERT(envChain_->is<SpecificEnvironment>());
+  envChain_ = &envChain_->as<SpecificEnvironment>().enclosingEnvironment();
+}
+
+inline void BaselineFrame::replaceInnermostEnvironment(EnvironmentObject& env) {
+  MOZ_ASSERT(env.enclosingEnvironment() ==
+             envChain_->as<EnvironmentObject>().enclosingEnvironment());
+  envChain_ = &env;
+}
+
+inline bool BaselineFrame::saveGeneratorSlots(JSContext* cx, unsigned nslots,
+                                              ArrayObject* dest) const {
+  // By convention, generator slots are stored in interpreter order,
+  // which is the reverse of BaselineFrame order.
+
+  MOZ_ASSERT(nslots == numValueSlots(debugFrameSize()) - 1);
+  const Value* end = reinterpret_cast<const Value*>(this);
+  mozilla::Span<const Value> span{end - nslots, end};
+  return dest->initDenseElementsFromRange(cx, span.rbegin(), span.rend());
+}
+
+inline bool BaselineFrame::pushLexicalEnvironment(JSContext* cx,
+                                                  Handle<LexicalScope*> scope) {
+  BlockLexicalEnvironmentObject* env =
+      BlockLexicalEnvironmentObject::createForFrame(cx, scope, this);
+  if (!env) {
+    return false;
+  }
+  pushOnEnvironmentChain(*env);
+
+  return true;
+}
+
+inline bool BaselineFrame::pushClassBodyEnvironment(
+    JSContext* cx, Handle<ClassBodyScope*> scope) {
+  ClassBodyLexicalEnvironmentObject* env =
+      ClassBodyLexicalEnvironmentObject::createForFrame(cx, scope, this);
+  if (!env) {
+    return false;
+  }
+  pushOnEnvironmentChain(*env);
+
+  return true;
+}
+
+inline bool BaselineFrame::freshenLexicalEnvironment(JSContext* cx) {
+  Rooted<BlockLexicalEnvironmentObject*> current(
+      cx, &envChain_->as<BlockLexicalEnvironmentObject>());
+  BlockLexicalEnvironmentObject* clone =
+      BlockLexicalEnvironmentObject::clone(cx, current);
+  if (!clone) {
+    return false;
+  }
+
+  replaceInnermostEnvironment(*clone);
+  return true;
+}
+
+inline bool BaselineFrame::recreateLexicalEnvironment(JSContext* cx) {
+  Rooted<BlockLexicalEnvironmentObject*> current(
+      cx, &envChain_->as<BlockLexicalEnvironmentObject>());
+  BlockLexicalEnvironmentObject* clone =
+      BlockLexicalEnvironmentObject::recreate(cx, current);
+  if (!clone) {
+    return false;
+  }
+
+  replaceInnermostEnvironment(*clone);
+  return true;
+}
+
+inline CallObject& BaselineFrame::callObj() const {
+  MOZ_ASSERT(hasInitialEnvironment());
+  MOZ_ASSERT(callee()->needsCallObject());
+
+  JSObject* obj = environmentChain();
+  while (!obj->is<CallObject>()) {
+    obj = obj->enclosingEnvironment();
+  }
+  return obj->as<CallObject>();
+}
+
+inline JSScript* BaselineFrame::outerScript() const {
+  if (!icScript()->isInlined()) {
+    return script();
+  }
+  return icScript()->inliningRoot()->owningScript();
+}
+
+inline void BaselineFrame::unsetIsDebuggee() {
+  MOZ_ASSERT(!script()->isDebuggee());
+  flags_ &= ~DEBUGGEE;
+}
+
+}  // namespace jit
+}  // namespace js
+
+#endif /* jit_BaselineFrame_inl_h */