1 files changed, 117 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/jit/JITCode.h b/Source/JavaScriptCore/jit/JITCode.h
new file mode 100644
index 0000000..7346fd5
--- /dev/null
+++ b/Source/JavaScriptCore/jit/JITCode.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2008 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. 
+ */
+
+#ifndef JITCode_h
+#define JITCode_h
+
+#if ENABLE(JIT)
+
+#include "CallFrame.h"
+#include "JSValue.h"
+#include "MacroAssemblerCodeRef.h"
+#include "Profiler.h"
+
+namespace JSC {
+
+    class JSGlobalData;
+    class RegisterFile;
+
+    class JITCode {
+        typedef MacroAssemblerCodeRef CodeRef;
+        typedef MacroAssemblerCodePtr CodePtr;
+    public:
+        JITCode()
+        {
+        }
+
+        JITCode(const CodeRef ref)
+            : m_ref(ref)
+        {
+        }
+
+        bool operator !() const
+        {
+            return !m_ref.m_code.executableAddress();
+        }
+
+        CodePtr addressForCall()
+        {
+            return m_ref.m_code;
+        }
+
+        // This function returns the offset in bytes of 'pointerIntoCode' into
+        // this block of code.  The pointer provided must be a pointer into this
+        // block of code.  It is ASSERTed that no codeblock >4gb in size.
+        unsigned offsetOf(void* pointerIntoCode)
+        {
+            intptr_t result = reinterpret_cast<intptr_t>(pointerIntoCode) - reinterpret_cast<intptr_t>(m_ref.m_code.executableAddress());
+            ASSERT(static_cast<intptr_t>(static_cast<unsigned>(result)) == result);
+            return static_cast<unsigned>(result);
+        }
+
+        // Execute the code!
+        inline JSValue execute(RegisterFile* registerFile, CallFrame* callFrame, JSGlobalData* globalData)
+        {
+            JSValue result = JSValue::decode(ctiTrampoline(m_ref.m_code.executableAddress(), registerFile, callFrame, 0, Profiler::enabledProfilerReference(), globalData));
+            return globalData->exception ? jsNull() : result;
+        }
+
+        void* start()
+        {
+            return m_ref.m_code.dataLocation();
+        }
+
+        size_t size()
+        {
+            ASSERT(m_ref.m_code.executableAddress());
+            return m_ref.m_size;
+        }
+
+        ExecutablePool* getExecutablePool()
+        {
+            return m_ref.m_executablePool.get();
+        }
+
+        // Host functions are a bit special; they have a m_code pointer but they
+        // do not individully ref the executable pool containing the trampoline.
+        static JITCode HostFunction(CodePtr code)
+        {
+            return JITCode(code.dataLocation(), 0, 0);
+        }
+
+    private:
+        JITCode(void* code, PassRefPtr<ExecutablePool> executablePool, size_t size)
+            : m_ref(code, executablePool, size)
+        {
+        }
+
+        CodeRef m_ref;
+    };
+
+};
+
+#endif
+
+#endif