Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

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  */

 #include "precompiled.hpp"

 #include "ci/ciMethod.hpp"

 #include "interpreter/interpreter.hpp"

 #include "runtime/frame.inline.hpp"

 #ifndef CC_INTERP

 // asm based interpreter deoptimization helpers

 int AbstractInterpreter::size_activation(int max_stack,

                                          int temps,

                                          int extra_args,

                                          int monitors,

                                          int callee_params,

                                          int callee_locals,

                                          bool is_top_frame) {

   // Note: This calculation must exactly parallel the frame setup

   // in AbstractInterpreterGenerator::generate_method_entry.

   // fixed size of an interpreter frame:

   int overhead = frame::sender_sp_offset -

                  frame::interpreter_frame_initial_sp_offset;

   // Our locals were accounted for by the caller (or last_frame_adjust

   // on the transistion) Since the callee parameters already account

   // for the callee's params we only need to account for the extra

   // locals.

   int size = overhead +

          (callee_locals - callee_params)*Interpreter::stackElementWords +

          monitors * frame::interpreter_frame_monitor_size() +

          temps* Interpreter::stackElementWords + extra_args;

   return size;

 }

 void AbstractInterpreter::layout_activation(Method* method,

                                             int tempcount,

                                             int popframe_extra_args,

                                             int moncount,

                                             int caller_actual_parameters,

                                             int callee_param_count,

                                             int callee_locals,

                                             frame* caller,

                                             frame* interpreter_frame,

                                             bool is_top_frame,

                                             bool is_bottom_frame) {

   // The frame interpreter_frame is guaranteed to be the right size,

   // as determined by a previous call to the size_activation() method.

   // It is also guaranteed to be walkable even though it is in a

   // skeletal state

   int max_locals = method->max_locals() * Interpreter::stackElementWords;

   int extra_locals = (method->max_locals() - method->size_of_parameters()) *

     Interpreter::stackElementWords;

 #ifdef ASSERT

   if (!EnableInvokeDynamic) {

     // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences?

     // Probably, since deoptimization doesn't work yet.

     assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable");

   }

   assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)");

 #endif

   interpreter_frame->interpreter_frame_set_method(method);

   // NOTE the difference in using sender_sp and

   // interpreter_frame_sender_sp interpreter_frame_sender_sp is

   // the original sp of the caller (the unextended_sp) and

   // sender_sp is fp+8/16 (32bit/64bit) XXX

   intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1;

 #ifdef ASSERT

   if (caller->is_interpreted_frame()) {

     assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement");

   }

 #endif

   interpreter_frame->interpreter_frame_set_locals(locals);

   BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin();

   BasicObjectLock* monbot = montop - moncount;

   interpreter_frame->interpreter_frame_set_monitor_end(monbot);

   // Set last_sp

   intptr_t*  esp = (intptr_t*) monbot -

     tempcount*Interpreter::stackElementWords -

     popframe_extra_args;

   interpreter_frame->interpreter_frame_set_last_sp(esp);

   // All frames but the initial (oldest) interpreter frame we fill in have

   // a value for sender_sp that allows walking the stack but isn't

   // truly correct. Correct the value here.

   if (extra_locals != 0 &&

       interpreter_frame->sender_sp() ==

       interpreter_frame->interpreter_frame_sender_sp()) {

     interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() +

                                                        extra_locals);

   }

   *interpreter_frame->interpreter_frame_cache_addr() =

     method->constants()->cache();

 }

 #endif // CC_INTERP