hotspot/src/cpu/aarch64/vm/templateInterpreter_aarch64.cpp
author coleenp
Sat, 05 Dec 2015 10:40:22 -0500
changeset 34651 07b1cc0f6040
parent 33160 c59f1676d27e
child 35135 dd2ce9021031
child 35214 d86005e0b4c2
permissions -rw-r--r--
8144534: Refactor templateInterpreter and templateInterpreterGenerator functions Summary: merged templateInterpreter_x86_32/64 into templateInterpreterGenerator_x86.cpp (some 32/64 functions remain for the hand coded crc functions). Reviewed-by: goetz, jrose, twisti
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/*
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 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
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 * Copyright (c) 2014, Red Hat Inc. 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 "interpreter/interpreter.hpp"
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#include "oops/constMethod.hpp"
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#include "oops/method.hpp"
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#include "runtime/frame.inline.hpp"
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#include "utilities/debug.hpp"
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#include "utilities/macros.hpp"
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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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// These should never be compiled since the interpreter will prefer
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// the compiled version to the intrinsic version.
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bool AbstractInterpreter::can_be_compiled(methodHandle m) {
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  switch (method_kind(m)) {
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    case Interpreter::java_lang_math_sin     : // fall thru
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    case Interpreter::java_lang_math_cos     : // fall thru
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    case Interpreter::java_lang_math_tan     : // fall thru
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    case Interpreter::java_lang_math_abs     : // fall thru
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    case Interpreter::java_lang_math_log     : // fall thru
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    case Interpreter::java_lang_math_log10   : // fall thru
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    case Interpreter::java_lang_math_sqrt    : // fall thru
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    case Interpreter::java_lang_math_pow     : // fall thru
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    case Interpreter::java_lang_math_exp     :
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      return false;
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    default:
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      return true;
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  }
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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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  // total overhead size: entry_size + (saved rfp 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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  const int stub_code = frame::entry_frame_after_call_words;
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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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// 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 InterpreterGenerator::generate_method_entry.
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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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  // On AArch64 we always keep the stack pointer 16-aligned, so we
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  // must round up here.
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  size = round_to(size, 2);
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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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}