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comparison: src/cpu/x86/vm/frame_x86.hpp
src/cpu/x86/vm/frame_x86.hpp
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| 1 /* | |
| 2 * Copyright (c) 1997, 2013, 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_X86_VM_FRAME_X86_HPP | |
| 26 #define CPU_X86_VM_FRAME_X86_HPP | |
| 27 | |
| 28 #include "runtime/synchronizer.hpp" | |
| 29 #include "utilities/top.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 // [monitors ] \ | |
| 40 // ... | monitor block size | |
| 41 // [monitors ] / | |
| 42 // [monitor block size ] | |
| 43 // [byte code index/pointr] = bcx() bcx_offset | |
| 44 // [pointer to locals ] = locals() locals_offset | |
| 45 // [constant pool cache ] = cache() cache_offset | |
| 46 // [methodData ] = mdp() mdx_offset | |
| 47 // [Method* ] = method() method_offset | |
| 48 // [last sp ] = last_sp() last_sp_offset | |
| 49 // [old stack pointer ] (sender_sp) sender_sp_offset | |
| 50 // [old frame pointer ] <- fp = link() | |
| 51 // [return pc ] | |
| 52 // [oop temp ] (only for native calls) | |
| 53 // [locals and parameters ] | |
| 54 // <- sender sp | |
| 55 // ------------------------------ Asm interpreter ---------------------------------------- | |
| 56 | |
| 57 // ------------------------------ C++ interpreter ---------------------------------------- | |
| 58 // | |
| 59 // Layout of C++ interpreter frame: (While executing in BytecodeInterpreter::run) | |
| 60 // | |
| 61 // <- SP (current esp/rsp) | |
| 62 // [local variables ] BytecodeInterpreter::run local variables | |
| 63 // ... BytecodeInterpreter::run local variables | |
| 64 // [local variables ] BytecodeInterpreter::run local variables | |
| 65 // [old frame pointer ] fp [ BytecodeInterpreter::run's ebp/rbp ] | |
| 66 // [return pc ] (return to frame manager) | |
| 67 // [interpreter_state* ] (arg to BytecodeInterpreter::run) -------------- | |
| 68 // [expression stack ] <- last_Java_sp | | |
| 69 // [... ] * <- interpreter_state.stack | | |
| 70 // [expression stack ] * <- interpreter_state.stack_base | | |
| 71 // [monitors ] \ | | |
| 72 // ... | monitor block size | | |
| 73 // [monitors ] / <- interpreter_state.monitor_base | | |
| 74 // [struct interpretState ] <-----------------------------------------| | |
| 75 // [return pc ] (return to callee of frame manager [1] | |
| 76 // [locals and parameters ] | |
| 77 // <- sender sp | |
| 78 | |
| 79 // [1] When the c++ interpreter calls a new method it returns to the frame | |
| 80 // manager which allocates a new frame on the stack. In that case there | |
| 81 // is no real callee of this newly allocated frame. The frame manager is | |
| 82 // aware of the additional frame(s) and will pop them as nested calls | |
| 83 // complete. Howevers tTo make it look good in the debugger the frame | |
| 84 // manager actually installs a dummy pc pointing to RecursiveInterpreterActivation | |
| 85 // with a fake interpreter_state* parameter to make it easy to debug | |
| 86 // nested calls. | |
| 87 | |
| 88 // Note that contrary to the layout for the assembly interpreter the | |
| 89 // expression stack allocated for the C++ interpreter is full sized. | |
| 90 // However this is not as bad as it seems as the interpreter frame_manager | |
| 91 // will truncate the unused space on succesive method calls. | |
| 92 // | |
| 93 // ------------------------------ C++ interpreter ---------------------------------------- | |
| 94 | |
| 95 public: | |
| 96 enum { | |
| 97 pc_return_offset = 0, | |
| 98 // All frames | |
| 99 link_offset = 0, | |
| 100 return_addr_offset = 1, | |
| 101 // non-interpreter frames | |
| 102 sender_sp_offset = 2, | |
| 103 | |
| 104 #ifndef CC_INTERP | |
| 105 | |
| 106 // Interpreter frames | |
| 107 interpreter_frame_result_handler_offset = 3, // for native calls only | |
| 108 interpreter_frame_oop_temp_offset = 2, // for native calls only | |
| 109 | |
| 110 interpreter_frame_sender_sp_offset = -1, | |
| 111 // outgoing sp before a call to an invoked method | |
| 112 interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1, | |
| 113 interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1, | |
| 114 interpreter_frame_mdx_offset = interpreter_frame_method_offset - 1, | |
| 115 interpreter_frame_cache_offset = interpreter_frame_mdx_offset - 1, | |
| 116 interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1, | |
| 117 interpreter_frame_bcx_offset = interpreter_frame_locals_offset - 1, | |
| 118 interpreter_frame_initial_sp_offset = interpreter_frame_bcx_offset - 1, | |
| 119 | |
| 120 interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset, | |
| 121 interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset, | |
| 122 | |
| 123 #endif // CC_INTERP | |
| 124 | |
| 125 // Entry frames | |
| 126 #ifdef AMD64 | |
| 127 #ifdef _WIN64 | |
| 128 entry_frame_after_call_words = 28, | |
| 129 entry_frame_call_wrapper_offset = 2, | |
| 130 | |
| 131 arg_reg_save_area_bytes = 32, // Register argument save area | |
| 132 #else | |
| 133 entry_frame_after_call_words = 13, | |
| 134 entry_frame_call_wrapper_offset = -6, | |
| 135 | |
| 136 arg_reg_save_area_bytes = 0, | |
| 137 #endif // _WIN64 | |
| 138 #else | |
| 139 entry_frame_call_wrapper_offset = 2, | |
| 140 #endif // AMD64 | |
| 141 | |
| 142 // Native frames | |
| 143 | |
| 144 native_frame_initial_param_offset = 2 | |
| 145 | |
| 146 }; | |
| 147 | |
| 148 intptr_t ptr_at(int offset) const { | |
| 149 return *ptr_at_addr(offset); | |
| 150 } | |
| 151 | |
| 152 void ptr_at_put(int offset, intptr_t value) { | |
| 153 *ptr_at_addr(offset) = value; | |
| 154 } | |
| 155 | |
| 156 private: | |
| 157 // an additional field beyond _sp and _pc: | |
| 158 intptr_t* _fp; // frame pointer | |
| 159 // The interpreter and adapters will extend the frame of the caller. | |
| 160 // Since oopMaps are based on the sp of the caller before extension | |
| 161 // we need to know that value. However in order to compute the address | |
| 162 // of the return address we need the real "raw" sp. Since sparc already | |
| 163 // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's | |
| 164 // original sp we use that convention. | |
| 165 | |
| 166 intptr_t* _unextended_sp; | |
| 167 void adjust_unextended_sp(); | |
| 168 | |
| 169 intptr_t* ptr_at_addr(int offset) const { | |
| 170 return (intptr_t*) addr_at(offset); | |
| 171 } | |
| 172 | |
| 173 #ifdef ASSERT | |
| 174 // Used in frame::sender_for_{interpreter,compiled}_frame | |
| 175 static void verify_deopt_original_pc( nmethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false); | |
| 176 static void verify_deopt_mh_original_pc(nmethod* nm, intptr_t* unextended_sp) { | |
| 177 verify_deopt_original_pc(nm, unextended_sp, true); | |
| 178 } | |
| 179 #endif | |
| 180 | |
| 181 public: | |
| 182 // Constructors | |
| 183 | |
| 184 frame(intptr_t* sp, intptr_t* fp, address pc); | |
| 185 | |
| 186 frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc); | |
| 187 | |
| 188 frame(intptr_t* sp, intptr_t* fp); | |
| 189 | |
| 190 // accessors for the instance variables | |
| 191 // Note: not necessarily the real 'frame pointer' (see real_fp) | |
| 192 intptr_t* fp() const { return _fp; } | |
| 193 | |
| 194 inline address* sender_pc_addr() const; | |
| 195 | |
| 196 // return address of param, zero origin index. | |
| 197 inline address* native_param_addr(int idx) const; | |
| 198 | |
| 199 // expression stack tos if we are nested in a java call | |
| 200 intptr_t* interpreter_frame_last_sp() const; | |
| 201 | |
| 202 // helper to update a map with callee-saved RBP | |
| 203 static void update_map_with_saved_link(RegisterMap* map, intptr_t** link_addr); | |
| 204 | |
| 205 #ifndef CC_INTERP | |
| 206 // deoptimization support | |
| 207 void interpreter_frame_set_last_sp(intptr_t* sp); | |
| 208 #endif // CC_INTERP | |
| 209 | |
| 210 #ifdef CC_INTERP | |
| 211 inline interpreterState get_interpreterState() const; | |
| 212 #endif // CC_INTERP | |
| 213 | |
| 214 #endif // CPU_X86_VM_FRAME_X86_HPP |
