vmreg_arm.hpp revision 12422:98fe046473c9 
1/*
2 * Copyright (c) 2008, 2014, 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.
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23 */
24
25#ifndef CPU_ARM_VM_VMREG_ARM_HPP
26#define CPU_ARM_VM_VMREG_ARM_HPP
27
28  inline bool is_Register() {
29    return (unsigned int) value() < (unsigned int) ConcreteRegisterImpl::max_gpr;
30  }
31
32  inline bool is_FloatRegister() {
33    return value() >= ConcreteRegisterImpl::max_gpr && value() < ConcreteRegisterImpl::max_fpr;
34  }
35
36  inline Register as_Register() {
37    assert(is_Register(), "must be");
38    assert(is_concrete(), "concrete register expected");
39    return ::as_Register(value() >> ConcreteRegisterImpl::log_vmregs_per_gpr);
40  }
41
42  inline FloatRegister as_FloatRegister() {
43    assert(is_FloatRegister(), "must be");
44    assert(is_concrete(), "concrete register expected");
45    return ::as_FloatRegister((value() - ConcreteRegisterImpl::max_gpr) >> ConcreteRegisterImpl::log_vmregs_per_fpr);
46  }
47
48  inline bool is_concrete() {
49    if (is_Register()) {
50      return ((value() & right_n_bits(ConcreteRegisterImpl::log_vmregs_per_gpr)) == 0);
51    } else if (is_FloatRegister()) {
52      return (((value() - ConcreteRegisterImpl::max_gpr) & right_n_bits(ConcreteRegisterImpl::log_vmregs_per_fpr)) == 0);
53    } else {
54      return false;
55    }
56  }
57
58#endif // CPU_ARM_VM_VMREG_ARM_HPP
59