183 lines
7.2 KiB
C++
183 lines
7.2 KiB
C++
/*
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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 "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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#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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// 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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// 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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#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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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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}
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