1 /*
   2  * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
   3  * Copyright 2007, 2008, 2009 Red Hat, Inc.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  */
  25 
  26 // In normal, CPU-specific ports of HotSpot these two classes are used
  27 // for generating assembly language.  We don't do any of this in zero,
  28 // of course, but we do sneak entry points around in CodeBuffers so we
  29 // generate those here.
  30 
  31 class Assembler : public AbstractAssembler {
  32  public:
  33   Assembler(CodeBuffer* code) : AbstractAssembler(code) {}
  34 
  35  public:
  36   void pd_patch_instruction(address branch, address target);
  37 #ifndef PRODUCT
  38   static void pd_print_patched_instruction(address branch);
  39 #endif // PRODUCT
  40 };
  41 
  42 class MacroAssembler : public Assembler {
  43  public:
  44   MacroAssembler(CodeBuffer* code) : Assembler(code) {}
  45 
  46  public:
  47   void align(int modulus);
  48   void bang_stack_with_offset(int offset);
  49   bool needs_explicit_null_check(intptr_t offset);
  50   RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
  51                                         Register tmp, int offset);
  52  public:
  53   void advance(int bytes);
  54   void store_oop(jobject obj);
  55 };
  56 
  57 #ifdef ASSERT
  58 inline bool AbstractAssembler::pd_check_instruction_mark() {
  59   ShouldNotCallThis();
  60 }
  61 #endif
  62 
  63 address ShouldNotCallThisStub();
  64 address ShouldNotCallThisEntry();