1 /*
 2  * Copyright (c) 2006, 2021, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
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24  */
25 
26 #ifndef CPU_AARCH64_VMREG_AARCH64_HPP
27 #define CPU_AARCH64_VMREG_AARCH64_HPP
28 
29 inline bool is_Register() {
30   return (unsigned int) value() < (unsigned int) ConcreteRegisterImpl::max_gpr;
31 }
32 
33 inline bool is_FloatRegister() {
34   return value() >= ConcreteRegisterImpl::max_gpr && value() < ConcreteRegisterImpl::max_fpr;
35 }
36 
37 inline bool is_PRegister() {
38   return value() >= ConcreteRegisterImpl::max_fpr && value() < ConcreteRegisterImpl::max_pr;
39 }
40 
41 inline Register as_Register() {
42   assert( is_Register(), "must be");
43   // Yuk
44   return ::as_Register(value() / RegisterImpl::max_slots_per_register);
45 }
46 
47 inline FloatRegister as_FloatRegister() {
48   assert( is_FloatRegister() && is_even(value()), "must be" );
49   // Yuk
50   return ::as_FloatRegister((value() - ConcreteRegisterImpl::max_gpr) /
51                             FloatRegisterImpl::max_slots_per_register);
52 }
53 
54 inline PRegister as_PRegister() {
55   assert( is_PRegister(), "must be" );
56   return ::as_PRegister((value() - ConcreteRegisterImpl::max_fpr) /
57                         PRegisterImpl::max_slots_per_register);
58 }
59 
60 inline bool is_concrete() {
61   assert(is_reg(), "must be");
62   if (is_FloatRegister()) {
63     int base = value() - ConcreteRegisterImpl::max_gpr;
64     return base % FloatRegisterImpl::max_slots_per_register == 0;
65   } else if (is_PRegister()) {
66     return true;   // Single slot
67   } else {
68     return is_even(value());
69   }
70 }
71 
72 #endif // CPU_AARCH64_VMREG_AARCH64_HPP