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 }