1 /*
   2  * Copyright (c) 2006, 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 CPU_X86_VM_VMREG_X86_HPP
  26 #define CPU_X86_VM_VMREG_X86_HPP
  27 
  28 
  29 
  30 inline bool is_Register() {
  31   return (unsigned int) value() < (unsigned int) ConcreteRegisterImpl::max_gpr;
  32 }
  33 
  34 inline bool is_FloatRegister() {
  35   return value() >= ConcreteRegisterImpl::max_gpr && value() < ConcreteRegisterImpl::max_fpr;
  36 }
  37 
  38 inline bool is_XMMRegister() {
  39   int uarch_max_xmm = ConcreteRegisterImpl::max_xmm;
  40 
  41 #ifdef _LP64
  42   if (UseAVX < 3) {
  43     int half_xmm = (XMMRegisterImpl::max_slots_per_register * XMMRegisterImpl::number_of_registers) / 2;
  44     uarch_max_xmm -= half_xmm;
  45   }
  46 #endif
  47 
  48   return (value() >= ConcreteRegisterImpl::max_fpr && value() < uarch_max_xmm);
  49 }
  50 
  51 inline bool is_KRegister() {
  52   if (UseAVX > 2) {
  53     return value() >= ConcreteRegisterImpl::max_xmm && value() < ConcreteRegisterImpl::max_kpr;
  54   } else {
  55     return false;
  56   }
  57 }
  58 
  59 inline Register as_Register() {
  60 
  61   assert( is_Register(), "must be");
  62   // Yuk
  63 #ifdef AMD64
  64   return ::as_Register(value() >> 1);
  65 #else
  66   return ::as_Register(value());
  67 #endif // AMD64
  68 }
  69 
  70 inline FloatRegister as_FloatRegister() {
  71   assert( is_FloatRegister() && is_even(value()), "must be" );
  72   // Yuk
  73   return ::as_FloatRegister((value() - ConcreteRegisterImpl::max_gpr) >> 1);
  74 }
  75 
  76 inline XMMRegister as_XMMRegister() {
  77   assert( is_XMMRegister() && is_even(value()), "must be" );
  78   // Yuk
  79   return ::as_XMMRegister((value() - ConcreteRegisterImpl::max_fpr) >> 4);
  80 }
  81 
  82 inline KRegister as_KRegister() {
  83   assert(is_KRegister(), "must be");
  84   // Yuk
  85   return ::as_KRegister((value() - ConcreteRegisterImpl::max_xmm));
  86 }
  87 
  88 inline   bool is_concrete() {
  89   assert(is_reg(), "must be");
  90 #ifndef AMD64
  91   if (is_Register()) return true;
  92 #endif // AMD64
  93   return is_even(value());
  94 }
  95 
  96 #endif // CPU_X86_VM_VMREG_X86_HPP