jdk8-mips64-public/hotspot: src/share/vm/asm/register.hpp@a61af66fc99e (annotated)

src/share/vm/asm/register.hpp@a61af66fc99e (annotated)

src/share/vm/asm/register.hpp

Sat, 01 Dec 2007 00:00:00 +0000

author: duke
date: Sat, 01 Dec 2007 00:00:00 +0000
changeset 435: a61af66fc99e
child 1907: c18cbe5936b8
permissions: -rw-r--r--

Initial load

 /*
  * Copyright 2000-2002 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 // Use AbstractRegister as shortcut
 class AbstractRegisterImpl;
 typedef AbstractRegisterImpl* AbstractRegister;
 // The super class for platform specific registers. Instead of using value objects,
 // registers are implemented as pointers. Subclassing is used so all registers can
 // use the debugging suport below. No virtual functions are used for efficiency.
 // They are canonicalized; i.e., registers are equal if their pointers are equal,
 // and vice versa. A concrete implementation may just map the register onto 'this'.
 class AbstractRegisterImpl {
  protected:
   int value() const                              { return (int)(intx)this; }
 };
 //
 // Macros for use in defining Register instances.  We'd like to be
 // able to simply define const instances of the RegisterImpl* for each
 // of the registers needed on a system in a header file.  However many
 // compilers don't handle this very well and end up producing a
 // private definition in every file which includes the header file.
 // Along with the static constructors necessary for initialization it
 // can consume a significant amount of space in the result library.
 //
 // The following macros allow us to declare the instance in a .hpp and
 // produce an enumeration value which has the same number.  Then in a
 // .cpp the the register instance can be defined using the enumeration
 // value.  This avoids the use of static constructors and multiple
 // definitions per .cpp.  In addition #defines for the register can be
 // produced so that the constant registers can be inlined.  These
 // macros should not be used inside other macros, because you may get
 // multiple evaluations of the macros which can give bad results.
 //
 // Here are some example uses and expansions.  Note that the macro
 // invocation is terminated with a ;.
 //
 // CONSTANT_REGISTER_DECLARATION(Register, G0, 0);
 //
 // extern const Register G0 ;
 // enum { G0_RegisterEnumValue = 0 } ;
 //
 // REGISTER_DECLARATION(Register, Gmethod, G5);
 //
 // extern const Register Gmethod ;
 // enum { Gmethod_RegisterEnumValue = G5_RegisterEnumValue } ;
 //
 // REGISTER_DEFINITION(Register, G0);
 //
 // const Register G0 = ( ( Register ) G0_RegisterEnumValue ) ;
 //
 #define AS_REGISTER(type,name)         ((type)name##_##type##EnumValue)
 #define CONSTANT_REGISTER_DECLARATION(type, name, value) \
 extern const type name;                                  \
 enum { name##_##type##EnumValue = (value) }
 #define REGISTER_DECLARATION(type, name, value) \
 extern const type name;                         \
 enum { name##_##type##EnumValue = value##_##type##EnumValue }
 #define REGISTER_DEFINITION(type, name) \
 const type name = ((type)name##_##type##EnumValue)
 // Debugging support
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b
 ) {
   assert(
     a != b,
     "registers must be different"
   );
 }
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b,
   AbstractRegister c
 ) {
   assert(
     a != b && a != c
            && b != c,
     "registers must be different"
   );
 }
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b,
   AbstractRegister c,
   AbstractRegister d
 ) {
   assert(
     a != b && a != c && a != d
            && b != c && b != d
                      && c != d,
     "registers must be different"
   );
 }
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b,
   AbstractRegister c,
   AbstractRegister d,
   AbstractRegister e
 ) {
   assert(
     a != b && a != c && a != d && a != e
            && b != c && b != d && b != e
                      && c != d && c != e
                                && d != e,
     "registers must be different"
   );
 }
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b,
   AbstractRegister c,
   AbstractRegister d,
   AbstractRegister e,
   AbstractRegister f
 ) {
   assert(
     a != b && a != c && a != d && a != e && a != f
            && b != c && b != d && b != e && b != f
                      && c != d && c != e && c != f
                                && d != e && d != f
                                          && e != f,
     "registers must be different"
   );
 }
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b,
   AbstractRegister c,
   AbstractRegister d,
   AbstractRegister e,
   AbstractRegister f,
   AbstractRegister g
 ) {
   assert(
     a != b && a != c && a != d && a != e && a != f && a != g
            && b != c && b != d && b != e && b != f && b != g
                      && c != d && c != e && c != f && c != g
                                && d != e && d != f && d != g
                                          && e != f && e != g
                                                    && f != g,
     "registers must be different"
   );
 }
 inline void assert_different_registers(
   AbstractRegister a,
   AbstractRegister b,
   AbstractRegister c,
   AbstractRegister d,
   AbstractRegister e,
   AbstractRegister f,
   AbstractRegister g,
   AbstractRegister h
 ) {
   assert(
     a != b && a != c && a != d && a != e && a != f && a != g && a != h
            && b != c && b != d && b != e && b != f && b != g && b != h
                      && c != d && c != e && c != f && c != g && c != h
                                && d != e && d != f && d != g && d != h
                                          && e != f && e != g && e != h
                                                    && f != g && f != h
                                                              && g != h,
     "registers must be different"
   );
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/asm/register.hpp@a61af66fc99e (annotated)

src/share/vm/asm/register.hpp