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annotate src/cpu/zero/vm/register_zero.hpp @ 20495:58925d1f325e
8057722: G1: Code root hashtable updated incorrectly when evacuation failed
Reviewed-by: brutisso, jwilhelm
author | mgerdin |
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date | Mon, 08 Sep 2014 17:47:43 +0200 |
parents | a3e2f723f2a5 |
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rev | line source |
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1010 | 1 /* |
1972 | 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
1010 | 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 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
1010 | 23 * |
24 */ | |
25 | |
1972 | 26 #ifndef CPU_ZERO_VM_REGISTER_ZERO_HPP |
27 #define CPU_ZERO_VM_REGISTER_ZERO_HPP | |
28 | |
29 #include "asm/register.hpp" | |
30 #include "vm_version_zero.hpp" | |
31 | |
1010 | 32 class VMRegImpl; |
33 typedef VMRegImpl* VMReg; | |
34 | |
35 // Use Register as shortcut | |
36 class RegisterImpl; | |
37 typedef RegisterImpl* Register; | |
38 | |
39 inline Register as_Register(int encoding) { | |
40 return (Register)(intptr_t) encoding; | |
41 } | |
42 | |
43 // The implementation of integer registers for the zero architecture | |
44 class RegisterImpl : public AbstractRegisterImpl { | |
45 public: | |
46 enum { | |
47 number_of_registers = 0 | |
48 }; | |
49 | |
50 // construction | |
51 inline friend Register as_Register(int encoding); | |
52 VMReg as_VMReg(); | |
53 | |
54 // derived registers, offsets, and addresses | |
55 Register successor() const { | |
56 return as_Register(encoding() + 1); | |
57 } | |
58 | |
59 // accessors | |
60 int encoding() const { | |
61 assert(is_valid(), "invalid register"); | |
62 return (intptr_t)this; | |
63 } | |
64 bool is_valid() const { | |
65 return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers; | |
66 } | |
67 const char* name() const; | |
68 }; | |
69 | |
70 // Use FloatRegister as shortcut | |
71 class FloatRegisterImpl; | |
72 typedef FloatRegisterImpl* FloatRegister; | |
73 | |
74 inline FloatRegister as_FloatRegister(int encoding) { | |
75 return (FloatRegister)(intptr_t) encoding; | |
76 } | |
77 | |
78 // The implementation of floating point registers for the zero architecture | |
79 class FloatRegisterImpl : public AbstractRegisterImpl { | |
80 public: | |
81 enum { | |
82 number_of_registers = 0 | |
83 }; | |
84 | |
85 // construction | |
86 inline friend FloatRegister as_FloatRegister(int encoding); | |
87 VMReg as_VMReg(); | |
88 | |
89 // derived registers, offsets, and addresses | |
90 FloatRegister successor() const { | |
91 return as_FloatRegister(encoding() + 1); | |
92 } | |
93 | |
94 // accessors | |
95 int encoding() const { | |
96 assert(is_valid(), "invalid register"); | |
97 return (intptr_t)this; | |
98 } | |
99 bool is_valid() const { | |
100 return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers; | |
101 } | |
102 const char* name() const; | |
103 }; | |
104 | |
105 class ConcreteRegisterImpl : public AbstractRegisterImpl { | |
106 public: | |
107 enum { | |
108 number_of_registers = RegisterImpl::number_of_registers + | |
109 FloatRegisterImpl::number_of_registers | |
110 }; | |
111 | |
112 static const int max_gpr; | |
113 static const int max_fpr; | |
114 }; | |
115 | |
116 CONSTANT_REGISTER_DECLARATION(Register, noreg, (-1)); | |
6926 | 117 #ifndef DONT_USE_REGISTER_DEFINES |
118 #define noreg ((Register)(noreg_RegisterEnumValue)) | |
119 #endif | |
1972 | 120 |
121 #endif // CPU_ZERO_VM_REGISTER_ZERO_HPP |