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

6941224: Improved stack overflow handling for Zero
Summary: Adding stack overflow checking to Shark brought to light a bunch of deficiencies in Zero's stack overflow code.
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

     1 /*

     2  * Copyright 2006-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * Copyright 2007 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    21  * CA 95054 USA or visit www.sun.com if you need additional information or

    22  * have any questions.

    23  *

    24  */

    26 #include "incls/_precompiled.incl"

    27 #include "incls/_vmreg_zero.cpp.incl"

    29 void VMRegImpl::set_regName() {

    30   int i = 0;

    31   Register reg = ::as_Register(0);

    32   for ( ; i < ConcreteRegisterImpl::max_gpr ; ) {

    33     regName[i++] = reg->name();

    34     reg = reg->successor();

    35   }

    36   FloatRegister freg = ::as_FloatRegister(0);

    37   for ( ; i < ConcreteRegisterImpl::max_fpr ; ) {

    38     regName[i++] = freg->name();

    39     freg = freg->successor();

    40   }

    41   assert(i == ConcreteRegisterImpl::number_of_registers, "fix this");

    42 }

    44 bool VMRegImpl::is_Register() {

    45   return value() >= 0 &&

    46          value() < ConcreteRegisterImpl::max_gpr;

    47 }

    49 bool VMRegImpl::is_FloatRegister() {

    50   return value() >= ConcreteRegisterImpl::max_gpr &&

    51          value() < ConcreteRegisterImpl::max_fpr;

    52 }

    54 Register VMRegImpl::as_Register() {

    55   assert(is_Register(), "must be");

    56   return ::as_Register(value());

    57 }

    59 FloatRegister VMRegImpl::as_FloatRegister() {

    60   assert(is_FloatRegister(), "must be" );

    61   return ::as_FloatRegister(value() - ConcreteRegisterImpl::max_gpr);

    62 }

src/cpu/zero/vm/vmreg_zero.cpp@f9271ff9d324

src/cpu/zero/vm/vmreg_zero.cpp

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

src/cpu/zero/vm/vmreg_zero.cpp@f9271ff9d324

src/cpu/zero/vm/vmreg_zero.cpp