Mercurial > jdk8-mips64-public > hotspot / annotate
src/cpu/x86/vm/frame_x86.hpp@18a389214829 (annotated)
src/cpu/x86/vm/frame_x86.hpp
Mon, 01 Feb 2010 19:29:46 +0100
- author
- twisti
- date
- Mon, 01 Feb 2010 19:29:46 +0100
- changeset 1639
- 18a389214829
- parent 435
- a61af66fc99e
- child 1907
- c18cbe5936b8
- permissions
- -rw-r--r--
6921352: JSR 292 needs its own deopt handler
Summary: We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not.
Reviewed-by: never, jrose
| duke@435 | 1 | /* |
| duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| duke@435 | 21 | * have any questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| duke@435 | 25 | // A frame represents a physical stack frame (an activation). Frames can be |
| duke@435 | 26 | // C or Java frames, and the Java frames can be interpreted or compiled. |
| duke@435 | 27 | // In contrast, vframes represent source-level activations, so that one physical frame |
| duke@435 | 28 | // can correspond to multiple source level frames because of inlining. |
| duke@435 | 29 | // A frame is comprised of {pc, fp, sp} |
| duke@435 | 30 | // ------------------------------ Asm interpreter ---------------------------------------- |
| duke@435 | 31 | // Layout of asm interpreter frame: |
| duke@435 | 32 | // [expression stack ] * <- sp |
| duke@435 | 33 | // [monitors ] \ |
| duke@435 | 34 | // ... | monitor block size |
| duke@435 | 35 | // [monitors ] / |
| duke@435 | 36 | // [monitor block size ] |
| duke@435 | 37 | // [byte code index/pointr] = bcx() bcx_offset |
| duke@435 | 38 | // [pointer to locals ] = locals() locals_offset |
| duke@435 | 39 | // [constant pool cache ] = cache() cache_offset |
| duke@435 | 40 | // [methodData ] = mdp() mdx_offset |
| duke@435 | 41 | // [methodOop ] = method() method_offset |
| duke@435 | 42 | // [last sp ] = last_sp() last_sp_offset |
| duke@435 | 43 | // [old stack pointer ] (sender_sp) sender_sp_offset |
| duke@435 | 44 | // [old frame pointer ] <- fp = link() |
| duke@435 | 45 | // [return pc ] |
| duke@435 | 46 | // [oop temp ] (only for native calls) |
| duke@435 | 47 | // [locals and parameters ] |
| duke@435 | 48 | // <- sender sp |
| duke@435 | 49 | // ------------------------------ Asm interpreter ---------------------------------------- |
| duke@435 | 50 | |
| duke@435 | 51 | // ------------------------------ C++ interpreter ---------------------------------------- |
| duke@435 | 52 | // |
| duke@435 | 53 | // Layout of C++ interpreter frame: (While executing in BytecodeInterpreter::run) |
| duke@435 | 54 | // |
| duke@435 | 55 | // <- SP (current esp/rsp) |
| duke@435 | 56 | // [local variables ] BytecodeInterpreter::run local variables |
| duke@435 | 57 | // ... BytecodeInterpreter::run local variables |
| duke@435 | 58 | // [local variables ] BytecodeInterpreter::run local variables |
| duke@435 | 59 | // [old frame pointer ] fp [ BytecodeInterpreter::run's ebp/rbp ] |
| duke@435 | 60 | // [return pc ] (return to frame manager) |
| duke@435 | 61 | // [interpreter_state* ] (arg to BytecodeInterpreter::run) -------------- |
| duke@435 | 62 | // [expression stack ] <- last_Java_sp | |
| duke@435 | 63 | // [... ] * <- interpreter_state.stack | |
| duke@435 | 64 | // [expression stack ] * <- interpreter_state.stack_base | |
| duke@435 | 65 | // [monitors ] \ | |
| duke@435 | 66 | // ... | monitor block size | |
| duke@435 | 67 | // [monitors ] / <- interpreter_state.monitor_base | |
| duke@435 | 68 | // [struct interpretState ] <-----------------------------------------| |
| duke@435 | 69 | // [return pc ] (return to callee of frame manager [1] |
| duke@435 | 70 | // [locals and parameters ] |
| duke@435 | 71 | // <- sender sp |
| duke@435 | 72 | |
| duke@435 | 73 | // [1] When the c++ interpreter calls a new method it returns to the frame |
| duke@435 | 74 | // manager which allocates a new frame on the stack. In that case there |
| duke@435 | 75 | // is no real callee of this newly allocated frame. The frame manager is |
| duke@435 | 76 | // aware of the additional frame(s) and will pop them as nested calls |
| duke@435 | 77 | // complete. Howevers tTo make it look good in the debugger the frame |
| duke@435 | 78 | // manager actually installs a dummy pc pointing to RecursiveInterpreterActivation |
| duke@435 | 79 | // with a fake interpreter_state* parameter to make it easy to debug |
| duke@435 | 80 | // nested calls. |
| duke@435 | 81 | |
| duke@435 | 82 | // Note that contrary to the layout for the assembly interpreter the |
| duke@435 | 83 | // expression stack allocated for the C++ interpreter is full sized. |
| duke@435 | 84 | // However this is not as bad as it seems as the interpreter frame_manager |
| duke@435 | 85 | // will truncate the unused space on succesive method calls. |
| duke@435 | 86 | // |
| duke@435 | 87 | // ------------------------------ C++ interpreter ---------------------------------------- |
| duke@435 | 88 | |
| duke@435 | 89 | public: |
| duke@435 | 90 | enum { |
| duke@435 | 91 | pc_return_offset = 0, |
| duke@435 | 92 | // All frames |
| duke@435 | 93 | link_offset = 0, |
| duke@435 | 94 | return_addr_offset = 1, |
| duke@435 | 95 | // non-interpreter frames |
| duke@435 | 96 | sender_sp_offset = 2, |
| duke@435 | 97 | |
| duke@435 | 98 | #ifndef CC_INTERP |
| duke@435 | 99 | |
| duke@435 | 100 | // Interpreter frames |
| duke@435 | 101 | interpreter_frame_result_handler_offset = 3, // for native calls only |
| duke@435 | 102 | interpreter_frame_oop_temp_offset = 2, // for native calls only |
| duke@435 | 103 | |
| duke@435 | 104 | interpreter_frame_sender_sp_offset = -1, |
| duke@435 | 105 | // outgoing sp before a call to an invoked method |
| duke@435 | 106 | interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1, |
| duke@435 | 107 | interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1, |
| duke@435 | 108 | interpreter_frame_mdx_offset = interpreter_frame_method_offset - 1, |
| duke@435 | 109 | interpreter_frame_cache_offset = interpreter_frame_mdx_offset - 1, |
| duke@435 | 110 | interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1, |
| duke@435 | 111 | interpreter_frame_bcx_offset = interpreter_frame_locals_offset - 1, |
| duke@435 | 112 | interpreter_frame_initial_sp_offset = interpreter_frame_bcx_offset - 1, |
| duke@435 | 113 | |
| duke@435 | 114 | interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset, |
| duke@435 | 115 | interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset, |
| duke@435 | 116 | |
| duke@435 | 117 | #endif // CC_INTERP |
| duke@435 | 118 | |
| duke@435 | 119 | // Entry frames |
| duke@435 | 120 | #ifdef AMD64 |
| duke@435 | 121 | #ifdef _WIN64 |
| duke@435 | 122 | entry_frame_after_call_words = 8, |
| duke@435 | 123 | entry_frame_call_wrapper_offset = 2, |
| duke@435 | 124 | |
| duke@435 | 125 | arg_reg_save_area_bytes = 32, // Register argument save area |
| duke@435 | 126 | #else |
| duke@435 | 127 | entry_frame_after_call_words = 13, |
| duke@435 | 128 | entry_frame_call_wrapper_offset = -6, |
| duke@435 | 129 | |
| duke@435 | 130 | arg_reg_save_area_bytes = 0, |
| duke@435 | 131 | #endif // _WIN64 |
| duke@435 | 132 | #else |
| duke@435 | 133 | entry_frame_call_wrapper_offset = 2, |
| duke@435 | 134 | #endif // AMD64 |
| duke@435 | 135 | |
| duke@435 | 136 | // Native frames |
| duke@435 | 137 | |
| duke@435 | 138 | native_frame_initial_param_offset = 2 |
| duke@435 | 139 | |
| duke@435 | 140 | }; |
| duke@435 | 141 | |
| duke@435 | 142 | intptr_t ptr_at(int offset) const { |
| duke@435 | 143 | return *ptr_at_addr(offset); |
| duke@435 | 144 | } |
| duke@435 | 145 | |
| duke@435 | 146 | void ptr_at_put(int offset, intptr_t value) { |
| duke@435 | 147 | *ptr_at_addr(offset) = value; |
| duke@435 | 148 | } |
| duke@435 | 149 | |
| duke@435 | 150 | private: |
| duke@435 | 151 | // an additional field beyond _sp and _pc: |
| duke@435 | 152 | intptr_t* _fp; // frame pointer |
| duke@435 | 153 | // The interpreter and adapters will extend the frame of the caller. |
| duke@435 | 154 | // Since oopMaps are based on the sp of the caller before extension |
| duke@435 | 155 | // we need to know that value. However in order to compute the address |
| duke@435 | 156 | // of the return address we need the real "raw" sp. Since sparc already |
| duke@435 | 157 | // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's |
| duke@435 | 158 | // original sp we use that convention. |
| duke@435 | 159 | |
| duke@435 | 160 | intptr_t* _unextended_sp; |
| duke@435 | 161 | |
| duke@435 | 162 | intptr_t* ptr_at_addr(int offset) const { |
| duke@435 | 163 | return (intptr_t*) addr_at(offset); |
| duke@435 | 164 | } |
| duke@435 | 165 | |
| twisti@1639 | 166 | #if ASSERT |
| twisti@1639 | 167 | // Used in frame::sender_for_{interpreter,compiled}_frame |
| twisti@1639 | 168 | static void verify_deopt_original_pc( nmethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false); |
| twisti@1639 | 169 | static void verify_deopt_mh_original_pc(nmethod* nm, intptr_t* unextended_sp) { |
| twisti@1639 | 170 | verify_deopt_original_pc(nm, unextended_sp, true); |
| twisti@1639 | 171 | } |
| twisti@1639 | 172 | #endif |
| twisti@1639 | 173 | |
| duke@435 | 174 | public: |
| duke@435 | 175 | // Constructors |
| duke@435 | 176 | |
| duke@435 | 177 | frame(intptr_t* sp, intptr_t* fp, address pc); |
| duke@435 | 178 | |
| duke@435 | 179 | frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc); |
| duke@435 | 180 | |
| duke@435 | 181 | frame(intptr_t* sp, intptr_t* fp); |
| duke@435 | 182 | |
| duke@435 | 183 | // accessors for the instance variables |
| duke@435 | 184 | intptr_t* fp() const { return _fp; } |
| duke@435 | 185 | |
| duke@435 | 186 | inline address* sender_pc_addr() const; |
| duke@435 | 187 | |
| duke@435 | 188 | // return address of param, zero origin index. |
| duke@435 | 189 | inline address* native_param_addr(int idx) const; |
| duke@435 | 190 | |
| duke@435 | 191 | // expression stack tos if we are nested in a java call |
| duke@435 | 192 | intptr_t* interpreter_frame_last_sp() const; |
| duke@435 | 193 | |
| duke@435 | 194 | #ifndef CC_INTERP |
| duke@435 | 195 | // deoptimization support |
| duke@435 | 196 | void interpreter_frame_set_last_sp(intptr_t* sp); |
| duke@435 | 197 | #endif // CC_INTERP |
| duke@435 | 198 | |
| duke@435 | 199 | #ifdef CC_INTERP |
| duke@435 | 200 | inline interpreterState get_interpreterState() const; |
| duke@435 | 201 | #endif // CC_INTERP |
