hotspot/src/cpu/sparc/vm/vmStructs_sparc.hpp
author twisti
Fri, 13 Feb 2009 09:09:35 -0800
changeset 2031 24e034f56dcb
parent 1 489c9b5090e2
child 5547 f4b087cbb361
permissions -rw-r--r--
6800154: Add comments to long_by_long_mulhi() for better understandability Summary: This patch adds a comment pointing to the Hacker's Delight version of the algorithm plus a verbatim copy of it. Furthermore it adds inline comments. Reviewed-by: kvn, jrose
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/*
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 * Copyright 2001-2007 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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// These are the CPU-specific fields, types and integer
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// constants required by the Serviceability Agent. This file is
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// referenced by vmStructs.cpp.
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#define VM_STRUCTS_CPU(nonstatic_field, static_field, unchecked_nonstatic_field, volatile_nonstatic_field, nonproduct_nonstatic_field, c2_nonstatic_field, unchecked_c1_static_field, unchecked_c2_static_field, last_entry)            \
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 \
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  /******************************/                                                                                                   \
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  /* JavaCallWrapper            */                                                                                                   \
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  /******************************/                                                                                                   \
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  /******************************/                                                                                                   \
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  /* JavaFrameAnchor            */                                                                                                   \
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  /******************************/                                                                                                   \
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  volatile_nonstatic_field(JavaFrameAnchor,     _flags,                                          int)                                \
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                                                                                                                                     \
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  /* NOTE that we do not use the last_entry() macro here; it is used  */
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  /* in vmStructs_<os>_<cpu>.hpp's VM_STRUCTS_OS_CPU macro (and must  */
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  /* be present there)                                                */
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#define VM_TYPES_CPU(declare_type, declare_toplevel_type, declare_oop_type, declare_integer_type, declare_unsigned_integer_type, declare_c1_toplevel_type, declare_c2_type, declare_c2_toplevel_type, last_entry)                               \
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  /* NOTE that we do not use the last_entry() macro here; it is used  */
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  /* in vmStructs_<os>_<cpu>.hpp's VM_TYPES_OS_CPU macro (and must    */
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  /* be present there)                                                */
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#define VM_INT_CONSTANTS_CPU(declare_constant, declare_preprocessor_constant, declare_c1_constant, declare_c2_constant, declare_c2_preprocessor_constant, last_entry)                                                              \
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  /******************************/                                        \
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  /* Register numbers (C2 only) */                                        \
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  /******************************/                                        \
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                                                                          \
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  declare_c2_constant(R_L0_num)                                           \
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  declare_c2_constant(R_L1_num)                                           \
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  declare_c2_constant(R_L2_num)                                           \
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  declare_c2_constant(R_L3_num)                                           \
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  declare_c2_constant(R_L4_num)                                           \
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  declare_c2_constant(R_L5_num)                                           \
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  declare_c2_constant(R_L6_num)                                           \
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  declare_c2_constant(R_L7_num)                                           \
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  declare_c2_constant(R_I0_num)                                           \
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  declare_c2_constant(R_I1_num)                                           \
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  declare_c2_constant(R_I2_num)                                           \
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  declare_c2_constant(R_I3_num)                                           \
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  declare_c2_constant(R_I4_num)                                           \
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  declare_c2_constant(R_I5_num)                                           \
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  declare_c2_constant(R_FP_num)                                           \
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  declare_c2_constant(R_I7_num)                                           \
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  declare_c2_constant(R_O0_num)                                           \
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  declare_c2_constant(R_O1_num)                                           \
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  declare_c2_constant(R_O2_num)                                           \
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  declare_c2_constant(R_O3_num)                                           \
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  declare_c2_constant(R_O4_num)                                           \
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  declare_c2_constant(R_O5_num)                                           \
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  declare_c2_constant(R_SP_num)                                           \
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  declare_c2_constant(R_O7_num)                                           \
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  declare_c2_constant(R_G0_num)                                           \
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  declare_c2_constant(R_G1_num)                                           \
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  declare_c2_constant(R_G2_num)                                           \
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  declare_c2_constant(R_G3_num)                                           \
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  declare_c2_constant(R_G4_num)                                           \
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  declare_c2_constant(R_G5_num)                                           \
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  declare_c2_constant(R_G6_num)                                           \
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  declare_c2_constant(R_G7_num)
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  /* NOTE that we do not use the last_entry() macro here; it is used       */
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  /* in vmStructs_<os>_<cpu>.hpp's VM_INT_CONSTANTS_OS_CPU macro (and must */
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  /* be present there)                                                     */
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#define VM_LONG_CONSTANTS_CPU(declare_constant, declare_preprocessor_constant, declare_c1_constant, declare_c2_constant, declare_c2_preprocessor_constant, last_entry)                                                              \
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  /* NOTE that we do not use the last_entry() macro here; it is used        */
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  /* in vmStructs_<os>_<cpu>.hpp's VM_LONG_CONSTANTS_OS_CPU macro (and must */
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  /* be present there)                                                      */