jdk8-mips64-public/hotspot: src/cpu/zero/vm/stack

7066143: JSR 292: Zero support after regressions from 7009923 and 7009309
Reviewed-by: jrose, twisti
Contributed-by: Xerxes Ranby <xerxes@zafena.se>

     1 /*

     2  * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2010 Red Hat, Inc.

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

     5  *

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

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

     8  * published by the Free Software Foundation.

     9  *

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

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

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

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

    14  * accompanied this code).

    15  *

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

    17  * 2 along with this work; if not, write to the Free Software Foundation,

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

    19  *

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

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

    22  * questions.

    23  *

    24  */

    26 #include "precompiled.hpp"

    27 #include "interpreter/interpreterRuntime.hpp"

    28 #include "stack_zero.hpp"

    29 #include "stack_zero.inline.hpp"

    31 int ZeroStack::suggest_size(Thread *thread) const {

    32   assert(needs_setup(), "already set up");

    33   return align_size_down(abi_stack_available(thread) / 2, wordSize);

    34 }

    36 void ZeroStack::handle_overflow(TRAPS) {

    37   JavaThread *thread = (JavaThread *) THREAD;

    39   // Set up the frame anchor if it isn't already

    40   bool has_last_Java_frame = thread->has_last_Java_frame();

    41   if (!has_last_Java_frame) {

    42     intptr_t *sp = thread->zero_stack()->sp();

    43     ZeroFrame *frame = thread->top_zero_frame();

    44     while (frame) {

    45       if (frame->is_shark_frame())

    46         break;

    48       if (frame->is_interpreter_frame()) {

    49         interpreterState istate =

    50           frame->as_interpreter_frame()->interpreter_state();

    51         if (istate->self_link() == istate)

    52           break;

    53       }

    55       sp = ((intptr_t *) frame) + 1;

    56       frame = frame->next();

    57     }

    59     if (frame == NULL)

    60       fatal("unrecoverable stack overflow");

    62     thread->set_last_Java_frame(frame, sp);

    63   }

    65   // Throw the exception

    66   switch (thread->thread_state()) {

    67   case _thread_in_Java:

    68     InterpreterRuntime::throw_StackOverflowError(thread);

    69     break;

    71   case _thread_in_vm:

    72     Exceptions::throw_stack_overflow_exception(thread, __FILE__, __LINE__,

    73                                                methodHandle());

    74     break;

    76   default:

    77     ShouldNotReachHere();

    78   }

    80   // Reset the frame anchor if necessary

    81   if (!has_last_Java_frame)

    82     thread->reset_last_Java_frame();

    83 }

    85 #ifndef PRODUCT

    86 void ZeroStack::zap(int c) {

    87   memset(_base, c, available_words() * wordSize);

    88 }

    89 #endif // PRODUCT

src/cpu/zero/vm/stack_zero.cpp@d17bd0b18663