1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/asm/register.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,211 @@
1.4 +/*
1.5 + * Copyright 2000-2002 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// Use AbstractRegister as shortcut
1.29 +class AbstractRegisterImpl;
1.30 +typedef AbstractRegisterImpl* AbstractRegister;
1.31 +
1.32 +
1.33 +// The super class for platform specific registers. Instead of using value objects,
1.34 +// registers are implemented as pointers. Subclassing is used so all registers can
1.35 +// use the debugging suport below. No virtual functions are used for efficiency.
1.36 +// They are canonicalized; i.e., registers are equal if their pointers are equal,
1.37 +// and vice versa. A concrete implementation may just map the register onto 'this'.
1.38 +
1.39 +class AbstractRegisterImpl {
1.40 + protected:
1.41 + int value() const { return (int)(intx)this; }
1.42 +};
1.43 +
1.44 +
1.45 +//
1.46 +// Macros for use in defining Register instances. We'd like to be
1.47 +// able to simply define const instances of the RegisterImpl* for each
1.48 +// of the registers needed on a system in a header file. However many
1.49 +// compilers don't handle this very well and end up producing a
1.50 +// private definition in every file which includes the header file.
1.51 +// Along with the static constructors necessary for initialization it
1.52 +// can consume a significant amount of space in the result library.
1.53 +//
1.54 +// The following macros allow us to declare the instance in a .hpp and
1.55 +// produce an enumeration value which has the same number. Then in a
1.56 +// .cpp the the register instance can be defined using the enumeration
1.57 +// value. This avoids the use of static constructors and multiple
1.58 +// definitions per .cpp. In addition #defines for the register can be
1.59 +// produced so that the constant registers can be inlined. These
1.60 +// macros should not be used inside other macros, because you may get
1.61 +// multiple evaluations of the macros which can give bad results.
1.62 +//
1.63 +// Here are some example uses and expansions. Note that the macro
1.64 +// invocation is terminated with a ;.
1.65 +//
1.66 +// CONSTANT_REGISTER_DECLARATION(Register, G0, 0);
1.67 +//
1.68 +// extern const Register G0 ;
1.69 +// enum { G0_RegisterEnumValue = 0 } ;
1.70 +//
1.71 +// REGISTER_DECLARATION(Register, Gmethod, G5);
1.72 +//
1.73 +// extern const Register Gmethod ;
1.74 +// enum { Gmethod_RegisterEnumValue = G5_RegisterEnumValue } ;
1.75 +//
1.76 +// REGISTER_DEFINITION(Register, G0);
1.77 +//
1.78 +// const Register G0 = ( ( Register ) G0_RegisterEnumValue ) ;
1.79 +//
1.80 +
1.81 +#define AS_REGISTER(type,name) ((type)name##_##type##EnumValue)
1.82 +
1.83 +#define CONSTANT_REGISTER_DECLARATION(type, name, value) \
1.84 +extern const type name; \
1.85 +enum { name##_##type##EnumValue = (value) }
1.86 +
1.87 +#define REGISTER_DECLARATION(type, name, value) \
1.88 +extern const type name; \
1.89 +enum { name##_##type##EnumValue = value##_##type##EnumValue }
1.90 +
1.91 +#define REGISTER_DEFINITION(type, name) \
1.92 +const type name = ((type)name##_##type##EnumValue)
1.93 +
1.94 +
1.95 +
1.96 +// Debugging support
1.97 +
1.98 +inline void assert_different_registers(
1.99 + AbstractRegister a,
1.100 + AbstractRegister b
1.101 +) {
1.102 + assert(
1.103 + a != b,
1.104 + "registers must be different"
1.105 + );
1.106 +}
1.107 +
1.108 +
1.109 +inline void assert_different_registers(
1.110 + AbstractRegister a,
1.111 + AbstractRegister b,
1.112 + AbstractRegister c
1.113 +) {
1.114 + assert(
1.115 + a != b && a != c
1.116 + && b != c,
1.117 + "registers must be different"
1.118 + );
1.119 +}
1.120 +
1.121 +
1.122 +inline void assert_different_registers(
1.123 + AbstractRegister a,
1.124 + AbstractRegister b,
1.125 + AbstractRegister c,
1.126 + AbstractRegister d
1.127 +) {
1.128 + assert(
1.129 + a != b && a != c && a != d
1.130 + && b != c && b != d
1.131 + && c != d,
1.132 + "registers must be different"
1.133 + );
1.134 +}
1.135 +
1.136 +
1.137 +inline void assert_different_registers(
1.138 + AbstractRegister a,
1.139 + AbstractRegister b,
1.140 + AbstractRegister c,
1.141 + AbstractRegister d,
1.142 + AbstractRegister e
1.143 +) {
1.144 + assert(
1.145 + a != b && a != c && a != d && a != e
1.146 + && b != c && b != d && b != e
1.147 + && c != d && c != e
1.148 + && d != e,
1.149 + "registers must be different"
1.150 + );
1.151 +}
1.152 +
1.153 +
1.154 +inline void assert_different_registers(
1.155 + AbstractRegister a,
1.156 + AbstractRegister b,
1.157 + AbstractRegister c,
1.158 + AbstractRegister d,
1.159 + AbstractRegister e,
1.160 + AbstractRegister f
1.161 +) {
1.162 + assert(
1.163 + a != b && a != c && a != d && a != e && a != f
1.164 + && b != c && b != d && b != e && b != f
1.165 + && c != d && c != e && c != f
1.166 + && d != e && d != f
1.167 + && e != f,
1.168 + "registers must be different"
1.169 + );
1.170 +}
1.171 +
1.172 +
1.173 +inline void assert_different_registers(
1.174 + AbstractRegister a,
1.175 + AbstractRegister b,
1.176 + AbstractRegister c,
1.177 + AbstractRegister d,
1.178 + AbstractRegister e,
1.179 + AbstractRegister f,
1.180 + AbstractRegister g
1.181 +) {
1.182 + assert(
1.183 + a != b && a != c && a != d && a != e && a != f && a != g
1.184 + && b != c && b != d && b != e && b != f && b != g
1.185 + && c != d && c != e && c != f && c != g
1.186 + && d != e && d != f && d != g
1.187 + && e != f && e != g
1.188 + && f != g,
1.189 + "registers must be different"
1.190 + );
1.191 +}
1.192 +
1.193 +
1.194 +inline void assert_different_registers(
1.195 + AbstractRegister a,
1.196 + AbstractRegister b,
1.197 + AbstractRegister c,
1.198 + AbstractRegister d,
1.199 + AbstractRegister e,
1.200 + AbstractRegister f,
1.201 + AbstractRegister g,
1.202 + AbstractRegister h
1.203 +) {
1.204 + assert(
1.205 + a != b && a != c && a != d && a != e && a != f && a != g && a != h
1.206 + && b != c && b != d && b != e && b != f && b != g && b != h
1.207 + && c != d && c != e && c != f && c != g && c != h
1.208 + && d != e && d != f && d != g && d != h
1.209 + && e != f && e != g && e != h
1.210 + && f != g && f != h
1.211 + && g != h,
1.212 + "registers must be different"
1.213 + );
1.214 +}
