1 /*
   2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright 2007 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 #ifndef CPU_ZERO_VM_NATIVEINST_ZERO_HPP
  27 #define CPU_ZERO_VM_NATIVEINST_ZERO_HPP
  28 
  29 #include "asm/assembler.hpp"
  30 #include "memory/allocation.hpp"
  31 #include "runtime/icache.hpp"
  32 #include "runtime/os.hpp"
  33 #include "utilities/top.hpp"
  34 
  35 // We have interfaces for the following instructions:
  36 // - NativeInstruction
  37 // - - NativeCall
  38 // - - NativeMovConstReg
  39 // - - NativeMovConstRegPatching
  40 // - - NativeJump
  41 // - - NativeIllegalOpCode
  42 // - - NativeReturn
  43 // - - NativeReturnX (return with argument)
  44 // - - NativePushConst
  45 // - - NativeTstRegMem
  46 
  47 // The base class for different kinds of native instruction abstractions.
  48 // Provides the primitive operations to manipulate code relative to this.
  49 
  50 class NativeInstruction VALUE_OBJ_CLASS_SPEC {
  51  public:
  52   bool is_jump() {
  53     ShouldNotCallThis();
  54   }
  55 
  56   bool is_safepoint_poll() {
  57     ShouldNotCallThis();
  58   }
  59 };
  60 
  61 inline NativeInstruction* nativeInstruction_at(address address) {
  62   ShouldNotCallThis();
  63 }
  64 
  65 class NativeCall : public NativeInstruction {
  66  public:
  67   enum zero_specific_constants {
  68     instruction_size = 0 // not used within the interpreter
  69   };
  70 
  71   address instruction_address() const {
  72     ShouldNotCallThis();
  73   }
  74 
  75   address next_instruction_address() const {
  76     ShouldNotCallThis();
  77   }
  78 
  79   address return_address() const {
  80     ShouldNotCallThis();
  81   }
  82 
  83   address destination() const {
  84     ShouldNotCallThis();
  85   }
  86 
  87   void set_destination_mt_safe(address dest) {
  88     ShouldNotCallThis();
  89   }
  90 
  91   void verify_alignment() {
  92     ShouldNotCallThis();
  93   }
  94 
  95   void verify() {
  96     ShouldNotCallThis();
  97   }
  98 
  99   static bool is_call_before(address return_address) {
 100     ShouldNotCallThis();
 101   }
 102 };
 103 
 104 inline NativeCall* nativeCall_before(address return_address) {
 105   ShouldNotCallThis();
 106 }
 107 
 108 inline NativeCall* nativeCall_at(address address) {
 109   ShouldNotCallThis();
 110 }
 111 
 112 class NativeMovConstReg : public NativeInstruction {
 113  public:
 114   address next_instruction_address() const {
 115     ShouldNotCallThis();
 116   }
 117 
 118   intptr_t data() const {
 119     ShouldNotCallThis();
 120   }
 121 
 122   void set_data(intptr_t x) {
 123     ShouldNotCallThis();
 124   }
 125 };
 126 
 127 inline NativeMovConstReg* nativeMovConstReg_at(address address) {
 128   ShouldNotCallThis();
 129 }
 130 
 131 class NativeMovRegMem : public NativeInstruction {
 132  public:
 133   int offset() const {
 134     ShouldNotCallThis();
 135   }
 136 
 137   void set_offset(intptr_t x) {
 138     ShouldNotCallThis();
 139   }
 140 
 141   void add_offset_in_bytes(int add_offset) {
 142     ShouldNotCallThis();
 143   }
 144 };
 145 
 146 inline NativeMovRegMem* nativeMovRegMem_at(address address) {
 147   ShouldNotCallThis();
 148 }
 149 
 150 class NativeJump : public NativeInstruction {
 151  public:
 152   enum zero_specific_constants {
 153     instruction_size = 0 // not used within the interpreter
 154   };
 155 
 156   address jump_destination() const {
 157     ShouldNotCallThis();
 158   }
 159 
 160   void set_jump_destination(address dest) {
 161     ShouldNotCallThis();
 162   }
 163 
 164   static void check_verified_entry_alignment(address entry,
 165                                              address verified_entry) {
 166   }
 167 
 168   static void patch_verified_entry(address entry,
 169                                    address verified_entry,
 170                                    address dest);
 171 };
 172 
 173 inline NativeJump* nativeJump_at(address address) {
 174   ShouldNotCallThis();
 175 }
 176 
 177 class NativeGeneralJump : public NativeInstruction {
 178  public:
 179   address jump_destination() const {
 180     ShouldNotCallThis();
 181   }
 182 
 183   static void insert_unconditional(address code_pos, address entry) {
 184     ShouldNotCallThis();
 185   }
 186 
 187   static void replace_mt_safe(address instr_addr, address code_buffer) {
 188     ShouldNotCallThis();
 189   }
 190 };
 191 
 192 inline NativeGeneralJump* nativeGeneralJump_at(address address) {
 193   ShouldNotCallThis();
 194 }
 195 
 196 #endif // CPU_ZERO_VM_NATIVEINST_ZERO_HPP