1 /*
   2  * Copyright (c) 2003, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #include "precompiled.hpp"
  27 #include "assembler_zero.inline.hpp"
  28 #include "gc/shared/cardTableModRefBS.hpp"
  29 #include "gc/shared/collectedHeap.inline.hpp"
  30 #include "interpreter/interpreter.hpp"
  31 #include "memory/resourceArea.hpp"
  32 #include "prims/methodHandles.hpp"
  33 #include "runtime/biasedLocking.hpp"
  34 #include "runtime/interfaceSupport.hpp"
  35 #include "runtime/objectMonitor.hpp"
  36 #include "runtime/os.hpp"
  37 #include "runtime/sharedRuntime.hpp"
  38 #include "runtime/stubRoutines.hpp"
  39 #include "utilities/macros.hpp"
  40 #if INCLUDE_ALL_GCS
  41 #include "gc/g1/g1BarrierSet.hpp"
  42 #include "gc/g1/g1CollectedHeap.inline.hpp"
  43 #include "gc/g1/heapRegion.hpp"
  44 #endif // INCLUDE_ALL_GCS
  45 
  46 int AbstractAssembler::code_fill_byte() {
  47   return 0;
  48 }
  49 
  50 #ifdef ASSERT
  51 bool AbstractAssembler::pd_check_instruction_mark() {
  52   ShouldNotCallThis();
  53   return false;
  54 }
  55 #endif
  56 
  57 void Assembler::pd_patch_instruction(address branch, address target) {
  58   ShouldNotCallThis();
  59 }
  60 
  61 void MacroAssembler::align(int modulus) {
  62   while (offset() % modulus != 0)
  63     emit_int8(AbstractAssembler::code_fill_byte());
  64 }
  65 
  66 void MacroAssembler::bang_stack_with_offset(int offset) {
  67   ShouldNotCallThis();
  68 }
  69 
  70 void MacroAssembler::advance(int bytes) {
  71   code_section()->set_end(code_section()->end() + bytes);
  72 }
  73 
  74 RegisterOrConstant MacroAssembler::delayed_value_impl(
  75   intptr_t* delayed_value_addr, Register tmpl, int offset) {
  76   ShouldNotCallThis();
  77   return RegisterOrConstant();
  78 }
  79 
  80 void MacroAssembler::store_oop(jobject obj) {
  81   code_section()->relocate(pc(), oop_Relocation::spec_for_immediate());
  82   emit_address((address) obj);
  83 }
  84 
  85 void MacroAssembler::store_Metadata(Metadata* md) {
  86   code_section()->relocate(pc(), metadata_Relocation::spec_for_immediate());
  87   emit_address((address) md);
  88 }
  89 
  90 static void should_not_call() {
  91   report_should_not_call(__FILE__, __LINE__);
  92 }
  93 
  94 address ShouldNotCallThisStub() {
  95   return (address) should_not_call;
  96 }
  97 
  98 address ShouldNotCallThisEntry() {
  99   return (address) should_not_call;
 100 }