1 files changed, 62 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/ftl/FTLOSRExitHandle.cpp b/Source/JavaScriptCore/ftl/FTLOSRExitHandle.cpp
new file mode 100644
index 000000000..11942b766
--- /dev/null
+++ b/Source/JavaScriptCore/ftl/FTLOSRExitHandle.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2015-2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "FTLOSRExitHandle.h"
+
+#if ENABLE(FTL_JIT)
+
+#include "FTLOSRExit.h"
+#include "FTLState.h"
+#include "FTLThunks.h"
+#include "LinkBuffer.h"
+#include "ProfilerCompilation.h"
+
+namespace JSC { namespace FTL {
+
+void OSRExitHandle::emitExitThunk(State& state, CCallHelpers& jit)
+{
+    Profiler::Compilation* compilation = state.graph.compilation();
+    CCallHelpers::Label myLabel = jit.label();
+    label = myLabel;
+    jit.pushToSaveImmediateWithoutTouchingRegisters(CCallHelpers::TrustedImm32(index));
+    CCallHelpers::PatchableJump jump = jit.patchableJump();
+    RefPtr<OSRExitHandle> self = this;
+    jit.addLinkTask(
+        [self, jump, myLabel, compilation] (LinkBuffer& linkBuffer) {
+            self->exit.m_patchableJump = CodeLocationJump(linkBuffer.locationOf(jump));
+
+            linkBuffer.link(
+                jump.m_jump,
+                CodeLocationLabel(linkBuffer.vm().getCTIStub(osrExitGenerationThunkGenerator).code()));
+            if (compilation)
+                compilation->addOSRExitSite({ linkBuffer.locationOf(myLabel).executableAddress() });
+        });
+}
+
+} } // namespace JSC::FTL
+
+#endif // ENABLE(FTL_JIT)
+