author | darcy |
Tue, 12 Nov 2019 10:45:23 -0800 (2019-11-12) | |
changeset 59037 | 3d2575331a41 |
parent 58537 | 30a9612a657d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "ci/ciMethod.hpp" |
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#include "interpreter/interpreter.hpp" |
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#include "oops/klass.inline.hpp" |
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#include "runtime/frame.inline.hpp" |
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// asm based interpreter deoptimization helpers |
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int AbstractInterpreter::size_activation(int max_stack, |
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int temps, |
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int extra_args, |
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int monitors, |
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int callee_params, |
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int callee_locals, |
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bool is_top_frame) { |
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// Note: This calculation must exactly parallel the frame setup |
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// in TemplateInterpreterGenerator::generate_fixed_frame. |
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// fixed size of an interpreter frame: |
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int overhead = frame::sender_sp_offset - |
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frame::interpreter_frame_initial_sp_offset; |
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// Our locals were accounted for by the caller (or last_frame_adjust |
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// on the transistion) Since the callee parameters already account |
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// for the callee's params we only need to account for the extra |
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// locals. |
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int size = overhead + |
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(callee_locals - callee_params)*Interpreter::stackElementWords + |
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monitors * frame::interpreter_frame_monitor_size() + |
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temps* Interpreter::stackElementWords + extra_args; |
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return size; |
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} |
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void AbstractInterpreter::layout_activation(Method* method, |
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int tempcount, |
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int popframe_extra_args, |
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int moncount, |
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int caller_actual_parameters, |
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int callee_param_count, |
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int callee_locals, |
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frame* caller, |
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frame* interpreter_frame, |
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bool is_top_frame, |
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bool is_bottom_frame) { |
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// The frame interpreter_frame is guaranteed to be the right size, |
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// as determined by a previous call to the size_activation() method. |
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// It is also guaranteed to be walkable even though it is in a |
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// skeletal state |
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int max_locals = method->max_locals() * Interpreter::stackElementWords; |
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int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
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Interpreter::stackElementWords; |
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#ifdef ASSERT |
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assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable"); |
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#endif |
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interpreter_frame->interpreter_frame_set_method(method); |
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// NOTE the difference in using sender_sp and |
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// interpreter_frame_sender_sp interpreter_frame_sender_sp is |
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// the original sp of the caller (the unextended_sp) and |
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// sender_sp is fp+8/16 (32bit/64bit) XXX |
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intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; |
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#ifdef ASSERT |
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if (caller->is_interpreted_frame()) { |
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assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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} |
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#endif |
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interpreter_frame->interpreter_frame_set_locals(locals); |
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BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); |
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BasicObjectLock* monbot = montop - moncount; |
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interpreter_frame->interpreter_frame_set_monitor_end(monbot); |
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// Set last_sp |
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intptr_t* esp = (intptr_t*) monbot - |
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tempcount*Interpreter::stackElementWords - |
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popframe_extra_args; |
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interpreter_frame->interpreter_frame_set_last_sp(esp); |
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// All frames but the initial (oldest) interpreter frame we fill in have |
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// a value for sender_sp that allows walking the stack but isn't |
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// truly correct. Correct the value here. |
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if (extra_locals != 0 && |
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interpreter_frame->sender_sp() == |
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interpreter_frame->interpreter_frame_sender_sp()) { |
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interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + |
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extra_locals); |
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} |
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*interpreter_frame->interpreter_frame_cache_addr() = |
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method->constants()->cache(); |
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*interpreter_frame->interpreter_frame_mirror_addr() = |
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method->method_holder()->java_mirror(); |
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} |
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|
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#ifndef _LP64 |
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int AbstractInterpreter::BasicType_as_index(BasicType type) { |
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int i = 0; |
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switch (type) { |
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case T_BOOLEAN: i = 0; break; |
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case T_CHAR : i = 1; break; |
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case T_BYTE : i = 2; break; |
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case T_SHORT : i = 3; break; |
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case T_INT : // fall through |
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case T_LONG : // fall through |
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case T_VOID : i = 4; break; |
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case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE |
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case T_DOUBLE : i = 6; break; |
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case T_OBJECT : // fall through |
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case T_ARRAY : i = 7; break; |
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default : ShouldNotReachHere(); |
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} |
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assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); |
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return i; |
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} |
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#else |
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int AbstractInterpreter::BasicType_as_index(BasicType type) { |
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int i = 0; |
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switch (type) { |
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case T_BOOLEAN: i = 0; break; |
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case T_CHAR : i = 1; break; |
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case T_BYTE : i = 2; break; |
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case T_SHORT : i = 3; break; |
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case T_INT : i = 4; break; |
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case T_LONG : i = 5; break; |
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case T_VOID : i = 6; break; |
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case T_FLOAT : i = 7; break; |
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case T_DOUBLE : i = 8; break; |
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case T_OBJECT : i = 9; break; |
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case T_ARRAY : i = 9; break; |
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default : ShouldNotReachHere(); |
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} |
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assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, |
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"index out of bounds"); |
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return i; |
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} |
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#endif // _LP64 |
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|
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// How much stack a method activation needs in words. |
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int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
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const int entry_size = frame::interpreter_frame_monitor_size(); |
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|
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// total overhead size: entry_size + (saved rbp thru expr stack |
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// bottom). be sure to change this if you add/subtract anything |
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// to/from the overhead area |
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const int overhead_size = |
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-(frame::interpreter_frame_initial_sp_offset) + entry_size; |
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|
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#ifndef _LP64 |
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const int stub_code = 4; // see generate_call_stub |
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#else |
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const int stub_code = frame::entry_frame_after_call_words; |
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#endif |
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|
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const int method_stack = (method->max_locals() + method->max_stack()) * |
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Interpreter::stackElementWords; |
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return (overhead_size + method_stack + stub_code); |
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} |