Add X32 port into V8

src/x64/macro-assembler-x64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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
@@ skipping 644 matching lines @@
                                   Register src,
                                   int shift_value,
                                   Label* on_not_smi_result,
                                   Label::Distance near_jump = Label::kFar);
   void SmiShiftArithmeticRightConstant(Register dst,
                                        Register src,
                                        int shift_value);
 
   // Shifts a smi value to the left, and returns the result if that is a smi.
   // Uses and clobbers rcx, so dst may not be rcx.
+#ifndef V8_TARGET_ARCH_X32
   void SmiShiftLeft(Register dst,
                     Register src1,
                     Register src2);
+#else
+  void SmiShiftLeft(Register dst,
+                    Register src1,
+                    Register src2,
+                    Label* on_not_smi_result);
+#endif
   // Shifts a smi value to the right, shifting in zero bits at the top, and
   // returns the unsigned intepretation of the result if that is a smi.
   // Uses and clobbers rcx, so dst may not be rcx.
   void SmiShiftLogicalRight(Register dst,
                             Register src1,
                             Register src2,
                             Label* on_not_smi_result,
                             Label::Distance near_jump = Label::kFar);
   // Shifts a smi value to the right, sign extending the top, and
   // returns the signed intepretation of the result. That will always
@@ skipping 34 matching lines @@
   // Basic Smi operations.
   void Move(Register dst, Smi* source) {
     LoadSmiConstant(dst, source);
   }
 
   void Move(const Operand& dst, Smi* source) {
     Register constant = GetSmiConstant(source);
     movq(dst, constant);
   }
 
+#ifdef V8_TARGET_ARCH_X32
+  void Push(Immediate value);
+  void Push_imm32(int32_t imm32);
+  void Push(Register src);
+  void Push(const Operand& src);
+  void Pop(Register dst);
+  void Pop(const Operand& dst);
+#endif
+
   void Push(Smi* smi);
   void Test(const Operand& dst, Smi* source);
 
 
   // ---------------------------------------------------------------------------
   // String macros.
 
   // If object is a string, its map is loaded into object_map.
   void JumpIfNotString(Register object,
                        Register object_map,
@@ skipping 30 matching lines @@
   void JumpIfNotUniqueName(Register reg, Label* not_unique_name,
                            Label::Distance distance = Label::kFar);
   void JumpIfNotUniqueName(Operand operand, Label* not_unique_name,
                            Label::Distance distance = Label::kFar);
 
   // ---------------------------------------------------------------------------
   // Macro instructions.
 
   // Load a register with a long value as efficiently as possible.
   void Set(Register dst, int64_t x);
+#ifndef V8_TARGET_ARCH_X32
   void Set(const Operand& dst, int64_t x);
+#else
+  void Set(const Operand& dst, int32_t x);
+#endif
 
   // Move if the registers are not identical.
   void Move(Register target, Register source);
 
   // Support for constant splitting.
   bool IsUnsafeInt(const int x);
   void SafeMove(Register dst, Smi* src);
   void SafePush(Smi* src);
 
   // Bit-field support.
@@ skipping 37 matching lines @@
 
   // Emit code to discard a non-negative number of pointer-sized elements
   // from the stack, clobbering only the rsp register.
   void Drop(int stack_elements);
 
   void Call(Label* target) { call(target); }
 
   // Control Flow
   void Jump(Address destination, RelocInfo::Mode rmode);
   void Jump(ExternalReference ext);
+#ifdef V8_TARGET_ARCH_X32
+  void Jump(const Operand& src);
+#endif
   void Jump(Handle<Code> code_object, RelocInfo::Mode rmode);
 
   void Call(Address destination, RelocInfo::Mode rmode);
   void Call(ExternalReference ext);
+#ifdef V8_TARGET_ARCH_X32
+  void Call(const Operand& op);
+#endif
   void Call(Handle<Code> code_object,
             RelocInfo::Mode rmode,
             TypeFeedbackId ast_id = TypeFeedbackId::None());
 
   // The size of the code generated for different call instructions.
   int CallSize(Address destination, RelocInfo::Mode rmode) {
     return kCallInstructionLength;
   }
   int CallSize(ExternalReference ext);
   int CallSize(Handle<Code> code_object) {
@@ skipping 528 matching lines @@
 
   bool generating_stub_;
   bool allow_stub_calls_;
   bool has_frame_;
   bool root_array_available_;
 
   // Returns a register holding the smi value. The register MUST NOT be
   // modified. It may be the "smi 1 constant" register.
   Register GetSmiConstant(Smi* value);
 
-  intptr_t RootRegisterDelta(ExternalReference other);
+  int64_t RootRegisterDelta(ExternalReference other);
 
   // Moves the smi value to the destination register.
   void LoadSmiConstant(Register dst, Smi* value);
 
   // This handle will be patched with the code object on installation.
   Handle<Object> code_object_;
 
   // Helper functions for generating invokes.
   void InvokePrologue(const ParameterCount& expected,
                       const ParameterCount& actual,
@@ skipping 142 matching lines @@
     masm->popfq();                                                           \
   }                                                                          \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_