1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/jit/x64/Bailouts-x64.cpp b/js/src/jit/x64/Bailouts-x64.cpp
new file mode 100644
index 0000000000..a058e3e398
--- /dev/null
+++ b/js/src/jit/x64/Bailouts-x64.cpp
@@ -0,0 +1,74 @@
+/* -*- 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/. */
+
+#include "jit/Bailouts.h"
+#include "jit/JitFrames.h"
+#include "jit/SafepointIndex.h"
+#include "jit/ScriptFromCalleeToken.h"
+
+#include "vm/JSScript-inl.h"
+
+using namespace js;
+using namespace js::jit;
+
+#if defined(_WIN32)
+#  pragma pack(push, 1)
+#endif
+
+namespace js {
+namespace jit {
+
+class BailoutStack {
+  RegisterDump::FPUArray fpregs_;
+  RegisterDump::GPRArray regs_;
+  uintptr_t frameSize_;
+  uintptr_t snapshotOffset_;
+
+ public:
+  MachineState machineState() {
+    return MachineState::FromBailout(regs_, fpregs_);
+  }
+  uint32_t snapshotOffset() const { return snapshotOffset_; }
+  uint32_t frameSize() const { return frameSize_; }
+  uint8_t* parentStackPointer() {
+    return (uint8_t*)this + sizeof(BailoutStack);
+  }
+};
+
+}  // namespace jit
+}  // namespace js
+
+#if defined(_WIN32)
+#  pragma pack(pop)
+#endif
+
+BailoutFrameInfo::BailoutFrameInfo(const JitActivationIterator& activations,
+                                   BailoutStack* bailout)
+    : machine_(bailout->machineState()), activation_(nullptr) {
+  uint8_t* sp = bailout->parentStackPointer();
+  framePointer_ = sp + bailout->frameSize();
+  topFrameSize_ = framePointer_ - sp;
+
+  JSScript* script =
+      ScriptFromCalleeToken(((JitFrameLayout*)framePointer_)->calleeToken());
+  topIonScript_ = script->ionScript();
+
+  attachOnJitActivation(activations);
+  snapshotOffset_ = bailout->snapshotOffset();
+}
+
+BailoutFrameInfo::BailoutFrameInfo(const JitActivationIterator& activations,
+                                   InvalidationBailoutStack* bailout)
+    : machine_(bailout->machine()), activation_(nullptr) {
+  framePointer_ = (uint8_t*)bailout->fp();
+  topFrameSize_ = framePointer_ - bailout->sp();
+  topIonScript_ = bailout->ionScript();
+  attachOnJitActivation(activations);
+
+  uint8_t* returnAddressToFp_ = bailout->osiPointReturnAddress();
+  const OsiIndex* osiIndex = topIonScript_->getOsiIndex(returnAddressToFp_);
+  snapshotOffset_ = osiIndex->snapshotOffset();
+}