jdk8-mips64-public/hotspot: src/share/vm/interpreter/bytecodeStream.cpp@f08d439fab8c

7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>

     1 /*

     2  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "interpreter/bytecodeStream.hpp"

    27 #include "interpreter/bytecodes.hpp"

    29 Bytecodes::Code RawBytecodeStream::raw_next_special(Bytecodes::Code code) {

    30   assert(!is_last_bytecode(), "should have been checked");

    31   // set next bytecode position

    32   address bcp = RawBytecodeStream::bcp();

    33   address end = method()->code_base() + end_bci();

    34   int l = Bytecodes::raw_special_length_at(bcp, end);

    35   if (l <= 0 || (_bci + l) > _end_bci) {

    36     code = Bytecodes::_illegal;

    37   } else {

    38     _next_bci += l;

    39     assert(_bci < _next_bci, "length must be > 0");

    40     // set attributes

    41     _is_wide = false;

    42     // check for special (uncommon) cases

    43     if (code == Bytecodes::_wide) {

    44       if (bcp + 1 >= end) {

    45         code = Bytecodes::_illegal;

    46       } else {

    47         code = (Bytecodes::Code)bcp[1];

    48         _is_wide = true;

    49       }

    50     }

    51   }

    52   _raw_code = code;

    53   return code;

    54 }

    56 #ifdef ASSERT

    57 void BaseBytecodeStream::assert_raw_index_size(int size) const {

    58   if (raw_code() == Bytecodes::_invokedynamic && is_raw()) {

    59     // in raw mode, pretend indy is "bJJ__"

    60     assert(size == 2, "raw invokedynamic instruction has 2-byte index only");

    61   } else {

    62     bytecode().assert_index_size(size, raw_code(), is_wide());

    63   }

    64 }

    66 void BaseBytecodeStream::assert_raw_stream(bool want_raw) const {

    67   if (want_raw) {

    68     assert( is_raw(), "this function only works on raw streams");

    69   } else {

    70     assert(!is_raw(), "this function only works on non-raw streams");

    71   }

    72 }

    73 #endif //ASSERT

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

src/share/vm/interpreter/bytecodeStream.cpp@f08d439fab8c

src/share/vm/interpreter/bytecodeStream.cpp