frame_aarch64.hpp revision 11090:98937e623982
1/* 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2014, Red Hat Inc. All rights reserved. 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_AARCH64_VM_FRAME_AARCH64_HPP 27#define CPU_AARCH64_VM_FRAME_AARCH64_HPP 28 29#include "runtime/synchronizer.hpp" 30 31// A frame represents a physical stack frame (an activation). Frames can be 32// C or Java frames, and the Java frames can be interpreted or compiled. 33// In contrast, vframes represent source-level activations, so that one physical frame 34// can correspond to multiple source level frames because of inlining. 35// A frame is comprised of {pc, fp, sp} 36// ------------------------------ Asm interpreter ---------------------------------------- 37// Layout of asm interpreter frame: 38// [expression stack ] * <- sp 39 40// [monitors[0] ] \ 41// ... | monitor block size = k 42// [monitors[k-1] ] / 43// [frame initial esp ] ( == &monitors[0], initially here) initial_sp_offset 44// [byte code index/pointr] = bcx() bcx_offset 45 46// [pointer to locals ] = locals() locals_offset 47// [constant pool cache ] = cache() cache_offset 48 49// [methodData ] = mdp() mdx_offset 50// [methodOop ] = method() method_offset 51 52// [last esp ] = last_sp() last_sp_offset 53// [old stack pointer ] (sender_sp) sender_sp_offset 54 55// [old frame pointer ] <- fp = link() 56// [return pc ] 57 58// [last sp ] 59// [oop temp ] (only for native calls) 60 61// [locals and parameters ] 62// <- sender sp 63// ------------------------------ Asm interpreter ---------------------------------------- 64 65 public: 66 enum { 67 pc_return_offset = 0, 68 // All frames 69 link_offset = 0, 70 return_addr_offset = 1, 71 sender_sp_offset = 2, 72 73 // Interpreter frames 74 interpreter_frame_oop_temp_offset = 3, // for native calls only 75 76 interpreter_frame_sender_sp_offset = -1, 77 // outgoing sp before a call to an invoked method 78 interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1, 79 interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1, 80 interpreter_frame_mdp_offset = interpreter_frame_method_offset - 1, 81 interpreter_frame_padding_offset = interpreter_frame_mdp_offset - 1, 82 interpreter_frame_mirror_offset = interpreter_frame_padding_offset - 1, 83 interpreter_frame_cache_offset = interpreter_frame_mirror_offset - 1, 84 interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1, 85 interpreter_frame_bcp_offset = interpreter_frame_locals_offset - 1, 86 interpreter_frame_initial_sp_offset = interpreter_frame_bcp_offset - 1, 87 88 interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset, 89 interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset, 90 91 // Entry frames 92 // n.b. these values are determined by the layout defined in 93 // stubGenerator for the Java call stub 94 entry_frame_after_call_words = 27, 95 entry_frame_call_wrapper_offset = -8, 96 97 // we don't need a save area 98 arg_reg_save_area_bytes = 0 99 100 }; 101 102 intptr_t ptr_at(int offset) const { 103 return *ptr_at_addr(offset); 104 } 105 106 void ptr_at_put(int offset, intptr_t value) { 107 *ptr_at_addr(offset) = value; 108 } 109 110 private: 111 // an additional field beyond _sp and _pc: 112 intptr_t* _fp; // frame pointer 113 // The interpreter and adapters will extend the frame of the caller. 114 // Since oopMaps are based on the sp of the caller before extension 115 // we need to know that value. However in order to compute the address 116 // of the return address we need the real "raw" sp. Since sparc already 117 // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's 118 // original sp we use that convention. 119 120 intptr_t* _unextended_sp; 121 void adjust_unextended_sp(); 122 123 intptr_t* ptr_at_addr(int offset) const { 124 return (intptr_t*) addr_at(offset); 125 } 126 127#ifdef ASSERT 128 // Used in frame::sender_for_{interpreter,compiled}_frame 129 static void verify_deopt_original_pc( CompiledMethod* nm, intptr_t* unextended_sp); 130#endif 131 132 public: 133 // Constructors 134 135 frame(intptr_t* sp, intptr_t* fp, address pc); 136 137 frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc); 138 139 frame(intptr_t* sp, intptr_t* fp); 140 141 void init(intptr_t* sp, intptr_t* fp, address pc); 142 143 // accessors for the instance variables 144 // Note: not necessarily the real 'frame pointer' (see real_fp) 145 intptr_t* fp() const { return _fp; } 146 147 inline address* sender_pc_addr() const; 148 149 // expression stack tos if we are nested in a java call 150 intptr_t* interpreter_frame_last_sp() const; 151 152 // helper to update a map with callee-saved RBP 153 static void update_map_with_saved_link(RegisterMap* map, intptr_t** link_addr); 154 155 // deoptimization support 156 void interpreter_frame_set_last_sp(intptr_t* sp); 157 158#endif // CPU_AARCH64_VM_FRAME_AARCH64_HPP 159