hotspot/src/cpu/zero/vm/vmreg_zero.cpp
author twisti
Wed, 12 May 2010 03:49:52 -0700
changeset 5427 08c6b2b940f7
parent 4013 b154310845de
child 5547 f4b087cbb361
permissions -rw-r--r--
6951784: Zero deoptimizer changes Summary: The way Zero currently handles deoptimization can lead to methods being freed while they are still being executed. Reviewed-by: twisti Contributed-by: Gary Benson <gbenson@redhat.com>
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
4013
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     1
/*
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     2
 * Copyright 2006-2007 Sun Microsystems, Inc.  All Rights Reserved.
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     3
 * Copyright 2007 Red Hat, Inc.
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     4
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     5
 *
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     6
 * This code is free software; you can redistribute it and/or modify it
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     7
 * under the terms of the GNU General Public License version 2 only, as
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     8
 * published by the Free Software Foundation.
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
     9
 *
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    10
 * This code is distributed in the hope that it will be useful, but WITHOUT
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    11
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    12
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    13
 * version 2 for more details (a copy is included in the LICENSE file that
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    14
 * accompanied this code).
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    15
 *
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    16
 * You should have received a copy of the GNU General Public License version
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    17
 * 2 along with this work; if not, write to the Free Software Foundation,
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    18
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    19
 *
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    20
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    21
 * CA 95054 USA or visit www.sun.com if you need additional information or
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    22
 * have any questions.
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    23
 *
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    24
 */
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    25
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    26
#include "incls/_precompiled.incl"
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    27
#include "incls/_vmreg_zero.cpp.incl"
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    28
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    29
void VMRegImpl::set_regName() {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    30
  int i = 0;
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    31
  Register reg = ::as_Register(0);
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    32
  for ( ; i < ConcreteRegisterImpl::max_gpr ; ) {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    33
    regName[i++] = reg->name();
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    34
    reg = reg->successor();
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    35
  }
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    36
  FloatRegister freg = ::as_FloatRegister(0);
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    37
  for ( ; i < ConcreteRegisterImpl::max_fpr ; ) {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    38
    regName[i++] = freg->name();
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    39
    freg = freg->successor();
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    40
  }
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    41
  assert(i == ConcreteRegisterImpl::number_of_registers, "fix this");
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    42
}
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    43
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    44
bool VMRegImpl::is_Register() {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    45
  return value() >= 0 &&
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    46
         value() < ConcreteRegisterImpl::max_gpr;
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    47
}
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    48
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    49
bool VMRegImpl::is_FloatRegister() {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    50
  return value() >= ConcreteRegisterImpl::max_gpr &&
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    51
         value() < ConcreteRegisterImpl::max_fpr;
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    52
}
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    53
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    54
Register VMRegImpl::as_Register() {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    55
  assert(is_Register(), "must be");
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    56
  return ::as_Register(value());
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    57
}
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    58
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    59
FloatRegister VMRegImpl::as_FloatRegister() {
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    60
  assert(is_FloatRegister(), "must be" );
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    61
  return ::as_FloatRegister(value() - ConcreteRegisterImpl::max_gpr);
b154310845de 6890308: integrate zero assembler hotspot changes
never
parents:
diff changeset
    62
}