--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/assembler/MacroAssemblerX86.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,203 @@
+/*
+ * 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 MacroAssemblerX86_h
+#define MacroAssemblerX86_h
+
+#if ENABLE(ASSEMBLER) && CPU(X86)
+
+#include "MacroAssemblerX86Common.h"
+
+namespace JSC {
+
+class MacroAssemblerX86 : public MacroAssemblerX86Common {
+public:
+    MacroAssemblerX86()
+        : m_isSSE2Present(isSSE2Present())
+    {
+    }
+
+    static const Scale ScalePtr = TimesFour;
+
+    using MacroAssemblerX86Common::add32;
+    using MacroAssemblerX86Common::and32;
+    using MacroAssemblerX86Common::sub32;
+    using MacroAssemblerX86Common::or32;
+    using MacroAssemblerX86Common::load32;
+    using MacroAssemblerX86Common::store32;
+    using MacroAssemblerX86Common::branch32;
+    using MacroAssemblerX86Common::call;
+    using MacroAssemblerX86Common::loadDouble;
+    using MacroAssemblerX86Common::convertInt32ToDouble;
+
+    void add32(Imm32 imm, RegisterID src, RegisterID dest)
+    {
+        m_assembler.leal_mr(imm.m_value, src, dest);
+    }
+
+    void add32(Imm32 imm, AbsoluteAddress address)
+    {
+        m_assembler.addl_im(imm.m_value, address.m_ptr);
+    }
+    
+    void addWithCarry32(Imm32 imm, AbsoluteAddress address)
+    {
+        m_assembler.adcl_im(imm.m_value, address.m_ptr);
+    }
+    
+    void and32(Imm32 imm, AbsoluteAddress address)
+    {
+        m_assembler.andl_im(imm.m_value, address.m_ptr);
+    }
+    
+    void or32(Imm32 imm, AbsoluteAddress address)
+    {
+        m_assembler.orl_im(imm.m_value, address.m_ptr);
+    }
+
+    void sub32(Imm32 imm, AbsoluteAddress address)
+    {
+        m_assembler.subl_im(imm.m_value, address.m_ptr);
+    }
+
+    void load32(void* address, RegisterID dest)
+    {
+        m_assembler.movl_mr(address, dest);
+    }
+
+    void loadDouble(const void* address, FPRegisterID dest)
+    {
+        ASSERT(isSSE2Present());
+        m_assembler.movsd_mr(address, dest);
+    }
+
+    void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest)
+    {
+        m_assembler.cvtsi2sd_mr(src.m_ptr, dest);
+    }
+
+    void store32(Imm32 imm, void* address)
+    {
+        m_assembler.movl_i32m(imm.m_value, address);
+    }
+
+    void store32(RegisterID src, void* address)
+    {
+        m_assembler.movl_rm(src, address);
+    }
+
+    Jump branch32(Condition cond, AbsoluteAddress left, RegisterID right)
+    {
+        m_assembler.cmpl_rm(right, left.m_ptr);
+        return Jump(m_assembler.jCC(x86Condition(cond)));
+    }
+
+    Jump branch32(Condition cond, AbsoluteAddress left, Imm32 right)
+    {
+        m_assembler.cmpl_im(right.m_value, left.m_ptr);
+        return Jump(m_assembler.jCC(x86Condition(cond)));
+    }
+
+    Call call()
+    {
+        return Call(m_assembler.call(), Call::Linkable);
+    }
+
+    Call tailRecursiveCall()
+    {
+        return Call::fromTailJump(jump());
+    }
+
+    Call makeTailRecursiveCall(Jump oldJump)
+    {
+        return Call::fromTailJump(oldJump);
+    }
+
+
+    DataLabelPtr moveWithPatch(ImmPtr initialValue, RegisterID dest)
+    {
+        m_assembler.movl_i32r(initialValue.asIntptr(), dest);
+        return DataLabelPtr(this);
+    }
+
+    Jump branchPtrWithPatch(Condition cond, RegisterID left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
+    {
+        m_assembler.cmpl_ir_force32(initialRightValue.asIntptr(), left);
+        dataLabel = DataLabelPtr(this);
+        return Jump(m_assembler.jCC(x86Condition(cond)));
+    }
+
+    Jump branchPtrWithPatch(Condition cond, Address left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
+    {
+        m_assembler.cmpl_im_force32(initialRightValue.asIntptr(), left.offset, left.base);
+        dataLabel = DataLabelPtr(this);
+        return Jump(m_assembler.jCC(x86Condition(cond)));
+    }
+
+    DataLabelPtr storePtrWithPatch(ImmPtr initialValue, ImplicitAddress address)
+    {
+        m_assembler.movl_i32m(initialValue.asIntptr(), address.offset, address.base);
+        return DataLabelPtr(this);
+    }
+
+    Label loadPtrWithPatchToLEA(Address address, RegisterID dest)
+    {
+        Label label(this);
+        load32(address, dest);
+        return label;
+    }
+
+    bool supportsFloatingPoint() const { return m_isSSE2Present; }
+    // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
+    bool supportsFloatingPointTruncate() const { return m_isSSE2Present; }
+    bool supportsFloatingPointSqrt() const { return m_isSSE2Present; }
+
+private:
+    const bool m_isSSE2Present;
+
+    friend class LinkBuffer;
+    friend class RepatchBuffer;
+
+    static void linkCall(void* code, Call call, FunctionPtr function)
+    {
+        X86Assembler::linkCall(code, call.m_jmp, function.value());
+    }
+
+    static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
+    {
+        X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
+    }
+
+    static void repatchCall(CodeLocationCall call, FunctionPtr destination)
+    {
+        X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
+    }
+};
+
+} // namespace JSC
+
+#endif // ENABLE(ASSEMBLER)
+
+#endif // MacroAssemblerX86_h