Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/asm/register.hpp
src/share/vm/asm/register.hpp
- changeset 435
- a61af66fc99e
- child 1907
- c18cbe5936b8
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| -1:000000000000 | 435:a61af66fc99e |
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| 1 /* | |
| 2 * Copyright 2000-2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // Use AbstractRegister as shortcut | |
| 26 class AbstractRegisterImpl; | |
| 27 typedef AbstractRegisterImpl* AbstractRegister; | |
| 28 | |
| 29 | |
| 30 // The super class for platform specific registers. Instead of using value objects, | |
| 31 // registers are implemented as pointers. Subclassing is used so all registers can | |
| 32 // use the debugging suport below. No virtual functions are used for efficiency. | |
| 33 // They are canonicalized; i.e., registers are equal if their pointers are equal, | |
| 34 // and vice versa. A concrete implementation may just map the register onto 'this'. | |
| 35 | |
| 36 class AbstractRegisterImpl { | |
| 37 protected: | |
| 38 int value() const { return (int)(intx)this; } | |
| 39 }; | |
| 40 | |
| 41 | |
| 42 // | |
| 43 // Macros for use in defining Register instances. We'd like to be | |
| 44 // able to simply define const instances of the RegisterImpl* for each | |
| 45 // of the registers needed on a system in a header file. However many | |
| 46 // compilers don't handle this very well and end up producing a | |
| 47 // private definition in every file which includes the header file. | |
| 48 // Along with the static constructors necessary for initialization it | |
| 49 // can consume a significant amount of space in the result library. | |
| 50 // | |
| 51 // The following macros allow us to declare the instance in a .hpp and | |
| 52 // produce an enumeration value which has the same number. Then in a | |
| 53 // .cpp the the register instance can be defined using the enumeration | |
| 54 // value. This avoids the use of static constructors and multiple | |
| 55 // definitions per .cpp. In addition #defines for the register can be | |
| 56 // produced so that the constant registers can be inlined. These | |
| 57 // macros should not be used inside other macros, because you may get | |
| 58 // multiple evaluations of the macros which can give bad results. | |
| 59 // | |
| 60 // Here are some example uses and expansions. Note that the macro | |
| 61 // invocation is terminated with a ;. | |
| 62 // | |
| 63 // CONSTANT_REGISTER_DECLARATION(Register, G0, 0); | |
| 64 // | |
| 65 // extern const Register G0 ; | |
| 66 // enum { G0_RegisterEnumValue = 0 } ; | |
| 67 // | |
| 68 // REGISTER_DECLARATION(Register, Gmethod, G5); | |
| 69 // | |
| 70 // extern const Register Gmethod ; | |
| 71 // enum { Gmethod_RegisterEnumValue = G5_RegisterEnumValue } ; | |
| 72 // | |
| 73 // REGISTER_DEFINITION(Register, G0); | |
| 74 // | |
| 75 // const Register G0 = ( ( Register ) G0_RegisterEnumValue ) ; | |
| 76 // | |
| 77 | |
| 78 #define AS_REGISTER(type,name) ((type)name##_##type##EnumValue) | |
| 79 | |
| 80 #define CONSTANT_REGISTER_DECLARATION(type, name, value) \ | |
| 81 extern const type name; \ | |
| 82 enum { name##_##type##EnumValue = (value) } | |
| 83 | |
| 84 #define REGISTER_DECLARATION(type, name, value) \ | |
| 85 extern const type name; \ | |
| 86 enum { name##_##type##EnumValue = value##_##type##EnumValue } | |
| 87 | |
| 88 #define REGISTER_DEFINITION(type, name) \ | |
| 89 const type name = ((type)name##_##type##EnumValue) | |
| 90 | |
| 91 | |
| 92 | |
| 93 // Debugging support | |
| 94 | |
| 95 inline void assert_different_registers( | |
| 96 AbstractRegister a, | |
| 97 AbstractRegister b | |
| 98 ) { | |
| 99 assert( | |
| 100 a != b, | |
| 101 "registers must be different" | |
| 102 ); | |
| 103 } | |
| 104 | |
| 105 | |
| 106 inline void assert_different_registers( | |
| 107 AbstractRegister a, | |
| 108 AbstractRegister b, | |
| 109 AbstractRegister c | |
| 110 ) { | |
| 111 assert( | |
| 112 a != b && a != c | |
| 113 && b != c, | |
| 114 "registers must be different" | |
| 115 ); | |
| 116 } | |
| 117 | |
| 118 | |
| 119 inline void assert_different_registers( | |
| 120 AbstractRegister a, | |
| 121 AbstractRegister b, | |
| 122 AbstractRegister c, | |
| 123 AbstractRegister d | |
| 124 ) { | |
| 125 assert( | |
| 126 a != b && a != c && a != d | |
| 127 && b != c && b != d | |
| 128 && c != d, | |
| 129 "registers must be different" | |
| 130 ); | |
| 131 } | |
| 132 | |
| 133 | |
| 134 inline void assert_different_registers( | |
| 135 AbstractRegister a, | |
| 136 AbstractRegister b, | |
| 137 AbstractRegister c, | |
| 138 AbstractRegister d, | |
| 139 AbstractRegister e | |
| 140 ) { | |
| 141 assert( | |
| 142 a != b && a != c && a != d && a != e | |
| 143 && b != c && b != d && b != e | |
| 144 && c != d && c != e | |
| 145 && d != e, | |
| 146 "registers must be different" | |
| 147 ); | |
| 148 } | |
| 149 | |
| 150 | |
| 151 inline void assert_different_registers( | |
| 152 AbstractRegister a, | |
| 153 AbstractRegister b, | |
| 154 AbstractRegister c, | |
| 155 AbstractRegister d, | |
| 156 AbstractRegister e, | |
| 157 AbstractRegister f | |
| 158 ) { | |
| 159 assert( | |
| 160 a != b && a != c && a != d && a != e && a != f | |
| 161 && b != c && b != d && b != e && b != f | |
| 162 && c != d && c != e && c != f | |
| 163 && d != e && d != f | |
| 164 && e != f, | |
| 165 "registers must be different" | |
| 166 ); | |
| 167 } | |
| 168 | |
| 169 | |
| 170 inline void assert_different_registers( | |
| 171 AbstractRegister a, | |
| 172 AbstractRegister b, | |
| 173 AbstractRegister c, | |
| 174 AbstractRegister d, | |
| 175 AbstractRegister e, | |
| 176 AbstractRegister f, | |
| 177 AbstractRegister g | |
| 178 ) { | |
| 179 assert( | |
| 180 a != b && a != c && a != d && a != e && a != f && a != g | |
| 181 && b != c && b != d && b != e && b != f && b != g | |
| 182 && c != d && c != e && c != f && c != g | |
| 183 && d != e && d != f && d != g | |
| 184 && e != f && e != g | |
| 185 && f != g, | |
| 186 "registers must be different" | |
| 187 ); | |
| 188 } | |
| 189 | |
| 190 | |
| 191 inline void assert_different_registers( | |
| 192 AbstractRegister a, | |
| 193 AbstractRegister b, | |
| 194 AbstractRegister c, | |
| 195 AbstractRegister d, | |
| 196 AbstractRegister e, | |
| 197 AbstractRegister f, | |
| 198 AbstractRegister g, | |
| 199 AbstractRegister h | |
| 200 ) { | |
| 201 assert( | |
| 202 a != b && a != c && a != d && a != e && a != f && a != g && a != h | |
| 203 && b != c && b != d && b != e && b != f && b != g && b != h | |
| 204 && c != d && c != e && c != f && c != g && c != h | |
| 205 && d != e && d != f && d != g && d != h | |
| 206 && e != f && e != g && e != h | |
| 207 && f != g && f != h | |
| 208 && g != h, | |
| 209 "registers must be different" | |
| 210 ); | |
| 211 } |
