JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / dfg / DFGOSRExitPreparation.cpp

diff --git a/dfg/DFGOSRExitPreparation.cpp b/dfg/DFGOSRExitPreparation.cpp
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+/*
+ * Copyright (C) 2013 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 "DFGOSRExitPreparation.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "CodeBlock.h"
+#include "Executable.h"
+#include "JIT.h"
+#include "JITCode.h"
+#include "JSCInlines.h"
+
+namespace JSC { namespace DFG {
+
+void prepareCodeOriginForOSRExit(ExecState* exec, CodeOrigin codeOrigin)
+{
+    VM& vm = exec->vm();
+    DeferGC deferGC(vm.heap);
+    
+    for (; codeOrigin.inlineCallFrame; codeOrigin = codeOrigin.inlineCallFrame->caller) {
+        FunctionExecutable* executable =
+            static_cast<FunctionExecutable*>(codeOrigin.inlineCallFrame->executable.get());
+        CodeBlock* codeBlock = executable->baselineCodeBlockFor(
+            codeOrigin.inlineCallFrame->isCall ? CodeForCall : CodeForConstruct);
+        
+        if (codeBlock->jitType() == JSC::JITCode::BaselineJIT)
+            continue;
+        ASSERT(codeBlock->jitType() == JSC::JITCode::InterpreterThunk);
+        JIT::compile(&vm, codeBlock, JITCompilationMustSucceed);
+        codeBlock->install();
+    }
+}
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+