1 /* 2 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_ARM_VM_FRAME_ARM_HPP 26 #define CPU_ARM_VM_FRAME_ARM_HPP 27 28 #include "runtime/synchronizer.hpp" 29 30 public: 31 enum { 32 pc_return_offset = 0, 33 // All frames 34 link_offset = 0, 35 return_addr_offset = 1, 36 // non-interpreter frames 37 sender_sp_offset = 2, 38 39 // Interpreter frames 40 #ifdef AARCH64 41 interpreter_frame_gp_saved_result_offset = 4, // for native calls only 42 interpreter_frame_fp_saved_result_offset = 3, // for native calls only 43 #endif 44 interpreter_frame_oop_temp_offset = 2, // for native calls only 45 46 interpreter_frame_sender_sp_offset = -1, 47 #ifdef AARCH64 48 interpreter_frame_stack_top_offset = interpreter_frame_sender_sp_offset - 1, 49 interpreter_frame_extended_sp_offset = interpreter_frame_stack_top_offset - 1, 50 interpreter_frame_method_offset = interpreter_frame_extended_sp_offset - 1, 51 #else 52 // outgoing sp before a call to an invoked method 53 interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1, 54 interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1, 55 #endif // AARCH64 56 interpreter_frame_mirror_offset = interpreter_frame_method_offset - 1, 57 interpreter_frame_mdp_offset = interpreter_frame_mirror_offset - 1, 58 interpreter_frame_cache_offset = interpreter_frame_mdp_offset - 1, 59 interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1, 60 interpreter_frame_bcp_offset = interpreter_frame_locals_offset - 1, 61 interpreter_frame_initial_sp_offset = interpreter_frame_bcp_offset - 1, 62 63 interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset, 64 interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset, 65 66 // Entry frames 67 entry_frame_call_wrapper_offset = AARCH64_ONLY(2) NOT_AARCH64(0) 68 }; 69 70 intptr_t ptr_at(int offset) const { 71 return *ptr_at_addr(offset); 72 } 73 74 void ptr_at_put(int offset, intptr_t value) { 75 *ptr_at_addr(offset) = value; 76 } 77 78 private: 79 // an additional field beyond _sp and _pc: 80 intptr_t* _fp; // frame pointer 81 // The interpreter and adapters will extend the frame of the caller. 82 // Since oopMaps are based on the sp of the caller before extension 83 // we need to know that value. However in order to compute the address 84 // of the return address we need the real "raw" sp. Since sparc already 85 // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's 86 // original sp we use that convention. 87 88 intptr_t* _unextended_sp; 89 void adjust_unextended_sp(); 90 91 intptr_t* ptr_at_addr(int offset) const { 92 return (intptr_t*) addr_at(offset); 93 } 94 95 #ifdef ASSERT 96 // Used in frame::sender_for_{interpreter,compiled}_frame 97 static void verify_deopt_original_pc( CompiledMethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false); 98 static void verify_deopt_mh_original_pc(CompiledMethod* nm, intptr_t* unextended_sp) { 99 verify_deopt_original_pc(nm, unextended_sp, true); 100 } 101 #endif 102 103 public: 104 // Constructors 105 106 frame(intptr_t* sp, intptr_t* fp, address pc); 107 108 frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc); 109 110 #ifndef AARCH64 111 frame(intptr_t* sp, intptr_t* fp); 112 #endif // !AARCH64 113 114 void init(intptr_t* sp, intptr_t* fp, address pc); 115 116 // accessors for the instance variables 117 // Note: not necessarily the real 'frame pointer' (see real_fp) 118 intptr_t* fp() const { return _fp; } 119 120 inline address* sender_pc_addr() const; 121 122 #ifdef AARCH64 123 // Used by template based interpreter deoptimization 124 void interpreter_frame_set_stack_top(intptr_t* stack_top); 125 void interpreter_frame_set_extended_sp(intptr_t* sp); 126 127 #else 128 // expression stack tos if we are nested in a java call 129 intptr_t* interpreter_frame_last_sp() const; 130 131 // deoptimization support 132 void interpreter_frame_set_last_sp(intptr_t* sp); 133 #endif // AARCH64 134 135 // helper to update a map with callee-saved FP 136 static void update_map_with_saved_link(RegisterMap* map, intptr_t** link_addr); 137 138 static jint interpreter_frame_expression_stack_direction() { return -1; } 139 140 #endif // CPU_ARM_VM_FRAME_ARM_HPP