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1 /* |
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2 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef CPU_ARM_VM_FRAME_ARM_HPP |
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26 #define CPU_ARM_VM_FRAME_ARM_HPP |
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27 |
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28 #include "runtime/synchronizer.hpp" |
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29 |
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30 public: |
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31 enum { |
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32 pc_return_offset = 0, |
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33 // All frames |
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34 link_offset = 0, |
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35 return_addr_offset = 1, |
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36 // non-interpreter frames |
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37 sender_sp_offset = 2, |
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38 |
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39 // Interpreter frames |
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40 #ifdef AARCH64 |
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41 interpreter_frame_gp_saved_result_offset = 4, // for native calls only |
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42 interpreter_frame_fp_saved_result_offset = 3, // for native calls only |
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43 #endif |
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44 interpreter_frame_oop_temp_offset = 2, // for native calls only |
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45 |
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46 interpreter_frame_sender_sp_offset = -1, |
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47 #ifdef AARCH64 |
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48 interpreter_frame_stack_top_offset = interpreter_frame_sender_sp_offset - 1, |
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49 interpreter_frame_extended_sp_offset = interpreter_frame_stack_top_offset - 1, |
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50 interpreter_frame_method_offset = interpreter_frame_extended_sp_offset - 1, |
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51 #else |
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52 // outgoing sp before a call to an invoked method |
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53 interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1, |
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54 interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1, |
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55 #endif // AARCH64 |
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56 interpreter_frame_mirror_offset = interpreter_frame_method_offset - 1, |
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57 interpreter_frame_mdp_offset = interpreter_frame_mirror_offset - 1, |
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58 interpreter_frame_cache_offset = interpreter_frame_mdp_offset - 1, |
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59 interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1, |
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60 interpreter_frame_bcp_offset = interpreter_frame_locals_offset - 1, |
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61 interpreter_frame_initial_sp_offset = interpreter_frame_bcp_offset - 1, |
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62 |
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63 interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset, |
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64 interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset, |
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65 |
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66 // Entry frames |
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67 entry_frame_call_wrapper_offset = AARCH64_ONLY(2) NOT_AARCH64(0) |
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68 }; |
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69 |
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70 intptr_t ptr_at(int offset) const { |
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71 return *ptr_at_addr(offset); |
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72 } |
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73 |
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74 void ptr_at_put(int offset, intptr_t value) { |
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75 *ptr_at_addr(offset) = value; |
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76 } |
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77 |
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78 private: |
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79 // an additional field beyond _sp and _pc: |
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80 intptr_t* _fp; // frame pointer |
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81 // The interpreter and adapters will extend the frame of the caller. |
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82 // Since oopMaps are based on the sp of the caller before extension |
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83 // we need to know that value. However in order to compute the address |
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84 // of the return address we need the real "raw" sp. Since sparc already |
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85 // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's |
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86 // original sp we use that convention. |
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87 |
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88 intptr_t* _unextended_sp; |
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89 void adjust_unextended_sp(); |
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90 |
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91 intptr_t* ptr_at_addr(int offset) const { |
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92 return (intptr_t*) addr_at(offset); |
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93 } |
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94 |
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95 #ifdef ASSERT |
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96 // Used in frame::sender_for_{interpreter,compiled}_frame |
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97 static void verify_deopt_original_pc( CompiledMethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false); |
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98 static void verify_deopt_mh_original_pc(CompiledMethod* nm, intptr_t* unextended_sp) { |
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99 verify_deopt_original_pc(nm, unextended_sp, true); |
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100 } |
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101 #endif |
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102 |
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103 public: |
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104 // Constructors |
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105 |
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106 frame(intptr_t* sp, intptr_t* fp, address pc); |
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107 |
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108 frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc); |
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109 |
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110 #ifndef AARCH64 |
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111 frame(intptr_t* sp, intptr_t* fp); |
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112 #endif // !AARCH64 |
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113 |
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114 void init(intptr_t* sp, intptr_t* fp, address pc); |
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115 |
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116 // accessors for the instance variables |
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117 // Note: not necessarily the real 'frame pointer' (see real_fp) |
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118 intptr_t* fp() const { return _fp; } |
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119 |
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120 inline address* sender_pc_addr() const; |
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121 |
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122 #ifdef AARCH64 |
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123 // Used by template based interpreter deoptimization |
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124 void interpreter_frame_set_stack_top(intptr_t* stack_top); |
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125 void interpreter_frame_set_extended_sp(intptr_t* sp); |
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126 |
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127 #else |
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128 // expression stack tos if we are nested in a java call |
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129 intptr_t* interpreter_frame_last_sp() const; |
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130 |
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131 // deoptimization support |
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132 void interpreter_frame_set_last_sp(intptr_t* sp); |
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133 #endif // AARCH64 |
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134 |
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135 // helper to update a map with callee-saved FP |
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136 static void update_map_with_saved_link(RegisterMap* map, intptr_t** link_addr); |
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137 |
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138 #endif // CPU_ARM_VM_FRAME_ARM_HPP |