1 /*
2 * Copyright (c) 2000, 2002, 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.
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
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 }
|
1 /*
2 * Copyright (c) 2000, 2010, 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.
22 *
23 */
24
25 #ifndef SHARE_VM_ASM_REGISTER_HPP
26 #define SHARE_VM_ASM_REGISTER_HPP
27
28 #include "utilities/top.hpp"
29
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
197 AbstractRegister a,
198 AbstractRegister b,
199 AbstractRegister c,
200 AbstractRegister d,
201 AbstractRegister e,
202 AbstractRegister f,
203 AbstractRegister g,
204 AbstractRegister h
205 ) {
206 assert(
207 a != b && a != c && a != d && a != e && a != f && a != g && a != h
208 && b != c && b != d && b != e && b != f && b != g && b != h
209 && c != d && c != e && c != f && c != g && c != h
210 && d != e && d != f && d != g && d != h
211 && e != f && e != g && e != h
212 && f != g && f != h
213 && g != h,
214 "registers must be different"
215 );
216 }
217
218 #endif // SHARE_VM_ASM_REGISTER_HPP
|