vmreg_x86.hpp revision 6760:22b98ab2a69f 
1/*
2 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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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,
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23 */
24
25#ifndef CPU_X86_VM_VMREG_X86_HPP
26#define CPU_X86_VM_VMREG_X86_HPP
27
28
29
30inline bool is_Register() {
31  return (unsigned int) value() < (unsigned int) ConcreteRegisterImpl::max_gpr;
32}
33
34inline bool is_FloatRegister() {
35  return value() >= ConcreteRegisterImpl::max_gpr && value() < ConcreteRegisterImpl::max_fpr;
36}
37
38inline bool is_XMMRegister() {
39  return value() >= ConcreteRegisterImpl::max_fpr && value() < ConcreteRegisterImpl::max_xmm;
40}
41
42inline Register as_Register() {
43
44  assert( is_Register(), "must be");
45  // Yuk
46#ifdef AMD64
47  return ::as_Register(value() >> 1);
48#else
49  return ::as_Register(value());
50#endif // AMD64
51}
52
53inline FloatRegister as_FloatRegister() {
54  assert( is_FloatRegister() && is_even(value()), "must be" );
55  // Yuk
56  return ::as_FloatRegister((value() - ConcreteRegisterImpl::max_gpr) >> 1);
57}
58
59inline XMMRegister as_XMMRegister() {
60  assert( is_XMMRegister() && is_even(value()), "must be" );
61  // Yuk
62  return ::as_XMMRegister((value() - ConcreteRegisterImpl::max_fpr) >> 3);
63}
64
65inline   bool is_concrete() {
66  assert(is_reg(), "must be");
67#ifndef AMD64
68  if (is_Register()) return true;
69#endif // AMD64
70  return is_even(value());
71}
72
73#endif // CPU_X86_VM_VMREG_X86_HPP
74