hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp
author coleenp
Sat, 05 Dec 2015 10:40:22 -0500
changeset 34651 07b1cc0f6040
parent 33070 54f3f085b165
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) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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 * Copyright (c) 2015 SAP AG. 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, "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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  return !TemplateInterpreter::math_entry_available(method_kind(m));
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}
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// How much stack a method activation needs in stack slots.
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// We must calc this exactly like in generate_fixed_frame.
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// Note: This returns the conservative size assuming maximum alignment.
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int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
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  const int max_alignment_size = 2;
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  const int abi_scratch = frame::abi_reg_args_size;
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  return method->max_locals() + method->max_stack() +
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         frame::interpreter_frame_monitor_size() + max_alignment_size + abi_scratch;
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}
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// Returns number of stackElementWords needed for the interpreter frame with the
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// given sections.
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// This overestimates the stack by one slot in case of alignments.
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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_fixed_frame.
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  assert(Interpreter::stackElementWords == 1, "sanity");
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  const int max_alignment_space = StackAlignmentInBytes / Interpreter::stackElementSize;
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  const int abi_scratch = is_top_frame ? (frame::abi_reg_args_size / Interpreter::stackElementSize) :
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                                         (frame::abi_minframe_size / Interpreter::stackElementSize);
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  const int size =
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    max_stack                                                +
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    (callee_locals - callee_params)                          +
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    monitors * frame::interpreter_frame_monitor_size()       +
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    max_alignment_space                                      +
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    abi_scratch                                              +
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    frame::ijava_state_size / Interpreter::stackElementSize;
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  // Fixed size of an interpreter frame, align to 16-byte.
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  return (size & -2);
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}
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// Fills a sceletal interpreter frame generated during deoptimizations.
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//
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// Parameters:
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//
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// interpreter_frame != NULL:
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//   set up the method, locals, and monitors.
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//   The frame interpreter_frame, if not NULL, is guaranteed to be the
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//   right size, as determined by a previous call to this method.
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//   It is also guaranteed to be walkable even though it is in a skeletal state
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//
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// is_top_frame == true:
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//   We're processing the *oldest* interpreter frame!
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//
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// pop_frame_extra_args:
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//   If this is != 0 we are returning to a deoptimized frame by popping
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//   off the callee frame. We want to re-execute the call that called the
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//   callee interpreted, but since the return to the interpreter would pop
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//   the arguments off advance the esp by dummy popframe_extra_args slots.
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//   Popping off those will establish the stack layout as it was before the call.
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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_count,
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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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  const int abi_scratch = is_top_frame ? (frame::abi_reg_args_size / Interpreter::stackElementSize) :
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                                         (frame::abi_minframe_size / Interpreter::stackElementSize);
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  intptr_t* locals_base  = (caller->is_interpreted_frame()) ?
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    caller->interpreter_frame_esp() + caller_actual_parameters :
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    caller->sp() + method->max_locals() - 1 + (frame::abi_minframe_size / Interpreter::stackElementSize) ;
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  intptr_t* monitor_base = caller->sp() - frame::ijava_state_size / Interpreter::stackElementSize ;
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  intptr_t* monitor      = monitor_base - (moncount * frame::interpreter_frame_monitor_size());
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  intptr_t* esp_base     = monitor - 1;
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  intptr_t* esp          = esp_base - tempcount - popframe_extra_args;
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  intptr_t* sp           = (intptr_t *) (((intptr_t) (esp_base - callee_locals_count + callee_param_count - method->max_stack()- abi_scratch)) & -StackAlignmentInBytes);
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  intptr_t* sender_sp    = caller->sp() + (frame::abi_minframe_size - frame::abi_reg_args_size) / Interpreter::stackElementSize;
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  intptr_t* top_frame_sp = is_top_frame ? sp : sp + (frame::abi_minframe_size - frame::abi_reg_args_size) / Interpreter::stackElementSize;
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  interpreter_frame->interpreter_frame_set_method(method);
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  interpreter_frame->interpreter_frame_set_locals(locals_base);
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  interpreter_frame->interpreter_frame_set_cpcache(method->constants()->cache());
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  interpreter_frame->interpreter_frame_set_esp(esp);
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  interpreter_frame->interpreter_frame_set_monitor_end((BasicObjectLock *)monitor);
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  interpreter_frame->interpreter_frame_set_top_frame_sp(top_frame_sp);
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  if (!is_bottom_frame) {
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    interpreter_frame->interpreter_frame_set_sender_sp(sender_sp);
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  }
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}
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// Support abs and sqrt like in compiler.
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// For others we can use a normal (native) entry.
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bool TemplateInterpreter::math_entry_available(AbstractInterpreter::MethodKind kind) {
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  if (!InlineIntrinsics) return false;
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  return ((kind==Interpreter::java_lang_math_sqrt && VM_Version::has_fsqrt()) ||
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          (kind==Interpreter::java_lang_math_abs));
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}
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