Port code generator to x64.

runtime/vm/assembler_x64.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_X64_H_
 #define VM_ASSEMBLER_X64_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_x64.h directly; use assembler.h instead.
 #endif
@@ skipping 190 matching lines @@
       SetModRM(1, RSP);
       SetSIB(scale, index, base);
       SetDisp8(disp);
     } else {
       SetModRM(2, RSP);
       SetSIB(scale, index, base);
       SetDisp32(disp);
     }
   }
 
-  static Address Absolute(const uword addr) {
-    UNIMPLEMENTED();
-    Address result;
-    result.SetModRM(0, RBP);
-    result.SetDisp32(addr);
-    return result;
-  }
-
  private:
   Address() {}
 
   // TODO(5411081): Add DISALLOW_COPY_AND_ASSIGN(Address) once the mac
   // build issue is resolved.
 };
 
 
 class FieldAddress : public Address {
  public:
@@ skipping 82 matching lines @@
   static const bool kFarJump = false;
 
   /*
    * Emit Machine Instructions.
    */
   void call(Register reg);
   void call(const Address& address);
   void call(Label* label);
   void call(const ExternalLabel* label);
 
-  static const intptr_t kCallExternalLabelSize = 5;
+  static const intptr_t kCallExternalLabelSize = 13;
 
   void pushq(Register reg);
   void pushq(const Address& address);
   void pushq(const Immediate& imm);
 
   void popq(Register reg);
   void popq(const Address& address);
 
   void movl(Register dst, Register src);
   void movl(Register dst, const Immediate& imm);
@@ skipping 97 matching lines @@
   void idivl(Register reg);
   void idivq(Register reg);
 
   void imull(Register dst, Register src);
   void imull(Register reg, const Immediate& imm);
 
   void imulq(Register dst, Register src);
 
   void subq(Register dst, Register src);
   void subq(Register reg, const Immediate& imm);
+  void subq(Register reg, const Address& address);
 
   void shll(Register reg, const Immediate& imm);
   void shll(Register operand, Register shifter);
   void shrl(Register reg, const Immediate& imm);
   void shrl(Register operand, Register shifter);
   void sarl(Register reg, const Immediate& imm);
   void sarl(Register operand, Register shifter);
 
   void shlq(Register reg, const Immediate& imm);
   void shlq(Register operand, Register shifter);
   void shrq(Register reg, const Immediate& imm);
   void shrq(Register operand, Register shifter);
   void sarq(Register reg, const Immediate& imm);
   void sarq(Register operand, Register shifter);
 
   void incl(const Address& address);
   void decl(const Address& address);
 
   void incq(Register reg);
   void incq(const Address& address);
   void decq(Register reg);
   void decq(const Address& address);
 
   void negl(Register reg);
   void negq(Register reg);
 
   void enter(const Immediate& imm);
   void leave();
+  void ret();
 
-  void ret();
-  void nop();
+  // 'size' indicates size in bytes and must be in the range 1..8.
+  void nop(int size = 1);
   void int3();
   void hlt();
 
   void j(Condition condition, Label* label, bool near = kFarJump);
+  void j(Condition condition, const ExternalLabel* label);
 
   void jmp(Register reg);
   void jmp(Label* label, bool near = kFarJump);
   void jmp(const ExternalLabel* label);
 
   void lock();
   void cmpxchgl(const Address& address, Register reg);
   void lock_cmpxchgl(const Address& address, Register reg) {
     lock();
     cmpxchgl(address, reg);
@@ skipping 133 matching lines @@
 }
 
 
 inline void Assembler::EmitOperandSizeOverride() {
   EmitUint8(0x66);
 }
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_X64_H_