X64: Implement RegExp natively.

src/x64/assembler-x64.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 478 matching lines @@
   void movb(Register dst, Immediate imm);
   void movb(const Operand& dst, Register src);
 
   void movl(Register dst, Register src);
   void movl(Register dst, const Operand& src);
   void movl(const Operand& dst, Register src);
   void movl(const Operand& dst, Immediate imm);
   // Load a 32-bit immediate value, zero-extended to 64 bits.
   void movl(Register dst, Immediate imm32);
 
+  // Move 64 bit register value to 64-bit memory location.
+  void movq(const Operand& dst, Register src);
+  // Move 64 bit memory location to 64-bit register value.
   void movq(Register dst, const Operand& src);
+  void movq(Register dst, Register src);
   // Sign extends immediate 32-bit value to 64 bits.
   void movq(Register dst, Immediate x);
-  void movq(Register dst, Register src);
+  // Move the offset of the label location relative to the current
+  // position (after the move) to the destination.
+  void movl(const Operand& dst, Label* src);
 
-  // Move 64 bit register value to 64-bit memory location.
-  void movq(const Operand& dst, Register src);
   // Move sign extended immediate to memory location.
   void movq(const Operand& dst, Immediate value);
   // New x64 instructions to load a 64-bit immediate into a register.
   // All 64-bit immediates must have a relocation mode.
   void movq(Register dst, void* ptr, RelocInfo::Mode rmode);
   void movq(Register dst, int64_t value, RelocInfo::Mode rmode);
   void movq(Register dst, const char* s, RelocInfo::Mode rmode);
   // Moves the address of the external reference into the register.
   void movq(Register dst, ExternalReference ext);
   void movq(Register dst, Handle<Object> handle, RelocInfo::Mode rmode);
@@ skipping 12 matching lines @@
   void cmovq(Condition cc, Register dst, Register src);
   void cmovq(Condition cc, Register dst, const Operand& src);
   void cmovl(Condition cc, Register dst, Register src);
   void cmovl(Condition cc, Register dst, const Operand& src);
 
   // Exchange two registers
   void xchg(Register dst, Register src);
 
   // Arithmetics
   void addl(Register dst, Register src) {
-    arithmetic_op_32(0x03, dst, src);
+    if (dst.low_bits() == 4) {  // Forces SIB byte.
+      arithmetic_op_32(0x01, src, dst);
+    } else {
+      arithmetic_op_32(0x03, dst, src);
+    }
   }
 
   void addl(Register dst, Immediate src) {
     immediate_arithmetic_op_32(0x0, dst, src);
   }
 
   void addl(Register dst, const Operand& src) {
     arithmetic_op_32(0x03, dst, src);
   }
 
@@ skipping 18 matching lines @@
   }
 
   void addq(const Operand& dst, Immediate src) {
     immediate_arithmetic_op(0x0, dst, src);
   }
 
   void cmpb(Register dst, Immediate src) {
     immediate_arithmetic_op_8(0x7, dst, src);
   }
 
+  void cmpb_al(Immediate src);
+
+  void cmpb(Register dst, Register src) {
+    arithmetic_op(0x3A, dst, src);
+  }
+
+  void cmpb(Register dst, const Operand& src) {
+    arithmetic_op(0x3A, dst, src);
+  }
+
+  void cmpb(const Operand& dst, Register src) {
+    arithmetic_op(0x38, src, dst);
+  }
+
   void cmpb(const Operand& dst, Immediate src) {
     immediate_arithmetic_op_8(0x7, dst, src);
   }
 
+  void cmpw(const Operand& dst, Immediate src) {
+    immediate_arithmetic_op_16(0x7, dst, src);
+  }
+
+  void cmpw(Register dst, Immediate src) {
+    immediate_arithmetic_op_16(0x7, dst, src);
+  }
+
+  void cmpw(Register dst, const Operand& src) {
+    arithmetic_op_16(0x3B, dst, src);
+  }
+
+  void cmpw(Register dst, Register src) {
+    arithmetic_op_16(0x3B, dst, src);
+  }
+
+  void cmpw(const Operand& dst, Register src) {
+    arithmetic_op_16(0x39, src, dst);
+  }
+
   void cmpl(Register dst, Register src) {
     arithmetic_op_32(0x3B, dst, src);
   }
 
   void cmpl(Register dst, const Operand& src) {
     arithmetic_op_32(0x3B, dst, src);
   }
 
   void cmpl(const Operand& dst, Register src) {
     arithmetic_op_32(0x39, src, dst);
@@ skipping 196 matching lines @@
   }
 
   void subl(const Operand& dst, Immediate src) {
     immediate_arithmetic_op_32(0x5, dst, src);
   }
 
   void subl(Register dst, Immediate src) {
     immediate_arithmetic_op_32(0x5, dst, src);
   }
 
+  void subb(Register dst, Immediate src) {
+    immediate_arithmetic_op_8(0x5, dst, src);
+  }
+
   void testb(Register reg, Immediate mask);
   void testb(const Operand& op, Immediate mask);
   void testl(Register dst, Register src);
   void testl(Register reg, Immediate mask);
   void testl(const Operand& op, Immediate mask);
   void testq(const Operand& op, Register reg);
   void testq(Register dst, Register src);
   void testq(Register dst, Immediate mask);
 
   void xor_(Register dst, Register src) {
@@ skipping 327 matching lines @@
     emit(0xC0 | code << 3 | rm_reg.low_bits());
   }
 
   // Emit the code-object-relative offset of the label's position
   inline void emit_code_relative_offset(Label* label);
 
   // Emit machine code for one of the operations ADD, ADC, SUB, SBC,
   // AND, OR, XOR, or CMP.  The encodings of these operations are all
   // similar, differing just in the opcode or in the reg field of the
   // ModR/M byte.
-  void arithmetic_op(byte opcode, Register dst, Register src);
-  void arithmetic_op_32(byte opcode, Register dst, Register src);
+  void arithmetic_op_16(byte opcode, Register reg, Register rm_reg);
+  void arithmetic_op_16(byte opcode, Register reg, const Operand& rm_reg);
+  void arithmetic_op_32(byte opcode, Register reg, Register rm_reg);
   void arithmetic_op_32(byte opcode, Register reg, const Operand& rm_reg);
+  void arithmetic_op(byte opcode, Register reg, Register rm_reg);
   void arithmetic_op(byte opcode, Register reg, const Operand& rm_reg);
   void immediate_arithmetic_op(byte subcode, Register dst, Immediate src);
   void immediate_arithmetic_op(byte subcode, const Operand& dst, Immediate src);
+  // Operate on a byte in memory or register.
+  void immediate_arithmetic_op_8(byte subcode,
+                                 Register dst,
+                                 Immediate src);
+  void immediate_arithmetic_op_8(byte subcode,
+                                 const Operand& dst,
+                                 Immediate src);
+  // Operate on a word in memory or register.
+  void immediate_arithmetic_op_16(byte subcode,
+                                  Register dst,
+                                  Immediate src);
+  void immediate_arithmetic_op_16(byte subcode,
+                                  const Operand& dst,
+                                  Immediate src);
   // Operate on a 32-bit word in memory or register.
   void immediate_arithmetic_op_32(byte subcode,
+                                  Register dst,
+                                  Immediate src);
+  void immediate_arithmetic_op_32(byte subcode,
                                   const Operand& dst,
                                   Immediate src);
-  void immediate_arithmetic_op_32(byte subcode,
-                                  Register dst,
-                                  Immediate src);
-  // Operate on a byte in memory or register.
-  void immediate_arithmetic_op_8(byte subcode,
-                                 const Operand& dst,
-                                 Immediate src);
-  void immediate_arithmetic_op_8(byte subcode,
-                                 Register dst,
-                                 Immediate src);
+
   // Emit machine code for a shift operation.
   void shift(Register dst, Immediate shift_amount, int subcode);
   void shift_32(Register dst, Immediate shift_amount, int subcode);
   // Shift dst by cl % 64 bits.
   void shift(Register dst, int subcode);
   void shift_32(Register dst, int subcode);
 
   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);
 
   // record reloc info for current pc_
   void RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data = 0);
 
   friend class CodePatcher;
   friend class EnsureSpace;
+  friend class RegExpMacroAssemblerX64;
 
   // 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_;
   // A previously allocated buffer of kMinimalBufferSize bytes, or NULL.
   static byte* spare_buffer_;
 
@@ skipping 35 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_H_