* Made preemption work in Irregexp-native-ia32

src/assembler-ia32.h

 // Copyright (c) 1994-2006 Sun Microsystems 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:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 167 matching lines @@
 // Machine instruction Immediates
 
 class Immediate BASE_EMBEDDED {
  public:
   inline explicit Immediate(int x);
   inline explicit Immediate(const char* s);
   inline explicit Immediate(const ExternalReference& ext);
   inline explicit Immediate(Handle<Object> handle);
   inline explicit Immediate(Smi* value);
 
+  static Immediate CodeRelativeOffset(Label* label) {
+    return Immediate(label);
+  }
+
   bool is_zero() const { return x_ == 0 && rmode_ == RelocInfo::NONE; }
   bool is_int8() const {
     return -128 <= x_ && x_ < 128 && rmode_ == RelocInfo::NONE;
   }
   bool is_int16() const {
     return -32768 <= x_ && x_ < 32768 && rmode_ == RelocInfo::NONE;
   }
 
  private:
+  inline explicit Immediate(Label* value);
+
   int x_;
   RelocInfo::Mode rmode_;
 
   friend class Assembler;
 };
 
 
 // -----------------------------------------------------------------------------
 // Machine instruction Operands
 
@@ skipping 517 matching lines @@
 
  protected:
   void movsd(XMMRegister dst, const Operand& src);
   void movsd(const Operand& dst, XMMRegister src);
 
   void emit_sse_operand(XMMRegister reg, const Operand& adr);
   void emit_sse_operand(XMMRegister dst, XMMRegister src);
 
 
  private:
-  // Code buffer:
-  // The buffer into which code and relocation info are generated.
-  byte* buffer_;
-  int buffer_size_;
-  // True if the assembler owns the buffer, false if buffer is external.
-  bool own_buffer_;
-
-  // code generation
-  byte* pc_;  // the program counter; moves forward
-  RelocInfoWriter reloc_info_writer;
-
-  // push-pop elimination
-  byte* last_pc_;
-
-  // source position information
-  int last_position_;
-  int last_statement_position_;
-
   byte* addr_at(int pos)  { return buffer_ + pos; }
   byte byte_at(int pos)  { return buffer_[pos]; }
   uint32_t long_at(int pos)  {
     return *reinterpret_cast<uint32_t*>(addr_at(pos));
   }
   void long_at_put(int pos, uint32_t x)  {
     *reinterpret_cast<uint32_t*>(addr_at(pos)) = x;
   }
 
   // code emission
   void GrowBuffer();
   inline void emit(uint32_t x);
   inline void emit(Handle<Object> handle);
   inline void emit(uint32_t x, RelocInfo::Mode rmode);
   inline void emit(const Immediate& x);
   inline void emit_w(const Immediate& x);
 
+  // Emit the code-object-relative offset of the label's position
+  inline void emit_code_relative_offset(Label* label);
+
   // instruction generation
   void emit_arith_b(int op1, int op2, Register dst, int imm8);
 
   // Emit a basic arithmetic instruction (i.e. first byte of the family is 0x81)
   // with a given destination expression and an immediate operand.  It attempts
   // to use the shortest encoding possible.
   // sel specifies the /n in the modrm byte (see the Intel PRM).
   void emit_arith(int sel, Operand dst, const Immediate& x);
 
   void emit_operand(Register reg, const Operand& adr);
 
   void emit_farith(int b1, int b2, int i);
 
   // labels
   void print(Label* L);
   void bind_to(Label* L, int pos);
   void link_to(Label* L, Label* appendix);
 
   // displacements
   inline Displacement disp_at(Label* L);
   inline void disp_at_put(Label* L, Displacement disp);
   inline void emit_disp(Label* L, Displacement::Type type);
 
   // record reloc info for current pc_
   void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0);
 
   friend class CodePatcher;
   friend class EnsureSpace;
+
+  // Code buffer:
+  // The buffer into which code and relocation info are generated.
+  byte* buffer_;
+  int buffer_size_;
+  // True if the assembler owns the buffer, false if buffer is external.
+  bool own_buffer_;
+
+  // code generation
+  byte* pc_;  // the program counter; moves forward
+  RelocInfoWriter reloc_info_writer;
+
+  // push-pop elimination
+  byte* last_pc_;
+
+  // source position information
+  int last_position_;
+  int last_statement_position_;
 };
 
 
 // Helper class that ensures that there is enough space for generating
 // instructions and relocation information.  The constructor makes
 // sure that there is enough space and (in debug mode) the destructor
 // checks that we did not generate too much.
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) : assembler_(assembler) {
@@ skipping 13 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_IA32_H_