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annotate src/share/vm/asm/register.hpp @ 10136:cc12becb22e7
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_ASM_REGISTER_HPP |
26 #define SHARE_VM_ASM_REGISTER_HPP | |
27 | |
28 #include "utilities/top.hpp" | |
29 | |
0 | 30 // Use AbstractRegister as shortcut |
31 class AbstractRegisterImpl; | |
32 typedef AbstractRegisterImpl* AbstractRegister; | |
33 | |
34 | |
35 // The super class for platform specific registers. Instead of using value objects, | |
36 // registers are implemented as pointers. Subclassing is used so all registers can | |
37 // use the debugging suport below. No virtual functions are used for efficiency. | |
38 // They are canonicalized; i.e., registers are equal if their pointers are equal, | |
39 // and vice versa. A concrete implementation may just map the register onto 'this'. | |
40 | |
41 class AbstractRegisterImpl { | |
42 protected: | |
43 int value() const { return (int)(intx)this; } | |
44 }; | |
45 | |
46 | |
47 // | |
48 // Macros for use in defining Register instances. We'd like to be | |
49 // able to simply define const instances of the RegisterImpl* for each | |
50 // of the registers needed on a system in a header file. However many | |
51 // compilers don't handle this very well and end up producing a | |
52 // private definition in every file which includes the header file. | |
53 // Along with the static constructors necessary for initialization it | |
54 // can consume a significant amount of space in the result library. | |
55 // | |
56 // The following macros allow us to declare the instance in a .hpp and | |
57 // produce an enumeration value which has the same number. Then in a | |
58 // .cpp the the register instance can be defined using the enumeration | |
59 // value. This avoids the use of static constructors and multiple | |
60 // definitions per .cpp. In addition #defines for the register can be | |
61 // produced so that the constant registers can be inlined. These | |
62 // macros should not be used inside other macros, because you may get | |
63 // multiple evaluations of the macros which can give bad results. | |
64 // | |
65 // Here are some example uses and expansions. Note that the macro | |
66 // invocation is terminated with a ;. | |
67 // | |
68 // CONSTANT_REGISTER_DECLARATION(Register, G0, 0); | |
69 // | |
70 // extern const Register G0 ; | |
71 // enum { G0_RegisterEnumValue = 0 } ; | |
72 // | |
73 // REGISTER_DECLARATION(Register, Gmethod, G5); | |
74 // | |
75 // extern const Register Gmethod ; | |
76 // enum { Gmethod_RegisterEnumValue = G5_RegisterEnumValue } ; | |
77 // | |
78 // REGISTER_DEFINITION(Register, G0); | |
79 // | |
80 // const Register G0 = ( ( Register ) G0_RegisterEnumValue ) ; | |
81 // | |
82 | |
83 #define AS_REGISTER(type,name) ((type)name##_##type##EnumValue) | |
84 | |
85 #define CONSTANT_REGISTER_DECLARATION(type, name, value) \ | |
86 extern const type name; \ | |
87 enum { name##_##type##EnumValue = (value) } | |
88 | |
89 #define REGISTER_DECLARATION(type, name, value) \ | |
90 extern const type name; \ | |
91 enum { name##_##type##EnumValue = value##_##type##EnumValue } | |
92 | |
93 #define REGISTER_DEFINITION(type, name) \ | |
94 const type name = ((type)name##_##type##EnumValue) | |
95 | |
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96 #ifdef TARGET_ARCH_x86 |
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97 # include "register_x86.hpp" |
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98 #endif |
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99 #ifdef TARGET_ARCH_sparc |
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100 # include "register_sparc.hpp" |
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101 #endif |
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102 #ifdef TARGET_ARCH_zero |
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103 # include "register_zero.hpp" |
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104 #endif |
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105 #ifdef TARGET_ARCH_arm |
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106 # include "register_arm.hpp" |
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107 #endif |
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108 #ifdef TARGET_ARCH_ppc |
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109 # include "register_ppc.hpp" |
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110 #endif |
0 | 111 |
112 | |
113 // Debugging support | |
114 | |
115 inline void assert_different_registers( | |
116 AbstractRegister a, | |
117 AbstractRegister b | |
118 ) { | |
119 assert( | |
120 a != b, | |
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121 err_msg_res("registers must be different: a=%d, b=%d", |
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122 a, b) |
0 | 123 ); |
124 } | |
125 | |
126 | |
127 inline void assert_different_registers( | |
128 AbstractRegister a, | |
129 AbstractRegister b, | |
130 AbstractRegister c | |
131 ) { | |
132 assert( | |
133 a != b && a != c | |
134 && b != c, | |
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135 err_msg_res("registers must be different: a=%d, b=%d, c=%d", |
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136 a, b, c) |
0 | 137 ); |
138 } | |
139 | |
140 | |
141 inline void assert_different_registers( | |
142 AbstractRegister a, | |
143 AbstractRegister b, | |
144 AbstractRegister c, | |
145 AbstractRegister d | |
146 ) { | |
147 assert( | |
148 a != b && a != c && a != d | |
149 && b != c && b != d | |
150 && c != d, | |
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151 err_msg_res("registers must be different: a=%d, b=%d, c=%d, d=%d", |
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152 a, b, c, d) |
0 | 153 ); |
154 } | |
155 | |
156 | |
157 inline void assert_different_registers( | |
158 AbstractRegister a, | |
159 AbstractRegister b, | |
160 AbstractRegister c, | |
161 AbstractRegister d, | |
162 AbstractRegister e | |
163 ) { | |
164 assert( | |
165 a != b && a != c && a != d && a != e | |
166 && b != c && b != d && b != e | |
167 && c != d && c != e | |
168 && d != e, | |
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169 err_msg_res("registers must be different: a=%d, b=%d, c=%d, d=%d, e=%d", |
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170 a, b, c, d, e) |
0 | 171 ); |
172 } | |
173 | |
174 | |
175 inline void assert_different_registers( | |
176 AbstractRegister a, | |
177 AbstractRegister b, | |
178 AbstractRegister c, | |
179 AbstractRegister d, | |
180 AbstractRegister e, | |
181 AbstractRegister f | |
182 ) { | |
183 assert( | |
184 a != b && a != c && a != d && a != e && a != f | |
185 && b != c && b != d && b != e && b != f | |
186 && c != d && c != e && c != f | |
187 && d != e && d != f | |
188 && e != f, | |
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189 err_msg_res("registers must be different: a=%d, b=%d, c=%d, d=%d, e=%d, f=%d", |
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190 a, b, c, d, e, f) |
0 | 191 ); |
192 } | |
193 | |
194 | |
195 inline void assert_different_registers( | |
196 AbstractRegister a, | |
197 AbstractRegister b, | |
198 AbstractRegister c, | |
199 AbstractRegister d, | |
200 AbstractRegister e, | |
201 AbstractRegister f, | |
202 AbstractRegister g | |
203 ) { | |
204 assert( | |
205 a != b && a != c && a != d && a != e && a != f && a != g | |
206 && b != c && b != d && b != e && b != f && b != g | |
207 && c != d && c != e && c != f && c != g | |
208 && d != e && d != f && d != g | |
209 && e != f && e != g | |
210 && f != g, | |
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211 err_msg_res("registers must be different: a=%d, b=%d, c=%d, d=%d, e=%d, f=%d, g=%d", |
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212 a, b, c, d, e, f, g) |
0 | 213 ); |
214 } | |
215 | |
216 | |
217 inline void assert_different_registers( | |
218 AbstractRegister a, | |
219 AbstractRegister b, | |
220 AbstractRegister c, | |
221 AbstractRegister d, | |
222 AbstractRegister e, | |
223 AbstractRegister f, | |
224 AbstractRegister g, | |
225 AbstractRegister h | |
226 ) { | |
227 assert( | |
228 a != b && a != c && a != d && a != e && a != f && a != g && a != h | |
229 && b != c && b != d && b != e && b != f && b != g && b != h | |
230 && c != d && c != e && c != f && c != g && c != h | |
231 && d != e && d != f && d != g && d != h | |
232 && e != f && e != g && e != h | |
233 && f != g && f != h | |
234 && g != h, | |
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235 err_msg_res("registers must be different: a=%d, b=%d, c=%d, d=%d, e=%d, f=%d, g=%d, h=%d", |
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236 a, b, c, d, e, f, g, h) |
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237 ); |
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238 } |
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239 |
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240 |
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241 inline void assert_different_registers( |
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242 AbstractRegister a, |
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243 AbstractRegister b, |
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244 AbstractRegister c, |
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245 AbstractRegister d, |
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246 AbstractRegister e, |
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247 AbstractRegister f, |
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248 AbstractRegister g, |
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249 AbstractRegister h, |
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250 AbstractRegister i |
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251 ) { |
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252 assert( |
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253 a != b && a != c && a != d && a != e && a != f && a != g && a != h && a != i |
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254 && b != c && b != d && b != e && b != f && b != g && b != h && b != i |
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255 && c != d && c != e && c != f && c != g && c != h && c != i |
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256 && d != e && d != f && d != g && d != h && d != i |
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257 && e != f && e != g && e != h && e != i |
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258 && f != g && f != h && f != i |
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259 && g != h && g != i |
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260 && h != i, |
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261 err_msg_res("registers must be different: a=%d, b=%d, c=%d, d=%d, e=%d, f=%d, g=%d, h=%d, i=%d", |
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262 a, b, c, d, e, f, g, h, i) |
0 | 263 ); |
264 } | |
1972 | 265 |
266 #endif // SHARE_VM_ASM_REGISTER_HPP |