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

     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   int abi_available = abi_stack_available(thread);

    34   assert(abi_available >= 0, "available abi stack must be >= 0");

    35   return align_size_down(abi_available / 2, wordSize);

    36 }

    38 void ZeroStack::handle_overflow(TRAPS) {

    39   JavaThread *thread = (JavaThread *) THREAD;

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

    42   bool has_last_Java_frame = thread->has_last_Java_frame();

    43   if (!has_last_Java_frame) {

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

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

    46     while (frame) {

    47       if (frame->is_shark_frame())

    48         break;

    50       if (frame->is_interpreter_frame()) {

    51         interpreterState istate =

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

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

    54           break;

    55       }

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

    58       frame = frame->next();

    59     }

    61     if (frame == NULL)

    62       fatal("unrecoverable stack overflow");

    64     thread->set_last_Java_frame(frame, sp);

    65   }

    67   // Throw the exception

    68   switch (thread->thread_state()) {

    69   case _thread_in_Java:

    70     InterpreterRuntime::throw_StackOverflowError(thread);

    71     break;

    73   case _thread_in_vm:

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

    75                                                methodHandle());

    76     break;

    78   default:

    79     ShouldNotReachHere();

    80   }

    82   // Reset the frame anchor if necessary

    83   if (!has_last_Java_frame)

    84     thread->reset_last_Java_frame();

    85 }

    87 #ifndef PRODUCT

    88 void ZeroStack::zap(int c) {

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

    90 }

    91 #endif // PRODUCT

src/cpu/zero/vm/stack_zero.cpp@04ff2f6cd0eb