1 /*
   2  * Copyright (c) 2003, 2013, 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_STUBROUTINES_X86_64_HPP
  26 #define CPU_X86_VM_STUBROUTINES_X86_64_HPP
  27 
  28 // This file holds the platform specific parts of the StubRoutines
  29 // definition. See stubRoutines.hpp for a description on how to
  30 // extend it.
  31 
  32 static bool    returns_to_call_stub(address return_pc)   { return return_pc == _call_stub_return_address; }
  33 
  34 enum platform_dependent_constants {
  35   code_size1 = 19000,          // simply increase if too small (assembler will crash if too small)
  36   code_size2 = 24000           // simply increase if too small (assembler will crash if too small)
  37 };
  38 
  39 class x86 {
  40  friend class StubGenerator;
  41 
  42  private:
  43   static address _get_previous_fp_entry;
  44   static address _get_previous_sp_entry;
  45 
  46   static address _shenandoah_wb;
  47   static address _f2i_fixup;
  48   static address _f2l_fixup;
  49   static address _d2i_fixup;
  50   static address _d2l_fixup;
  51 
  52   static address _float_sign_mask;
  53   static address _float_sign_flip;
  54   static address _double_sign_mask;
  55   static address _double_sign_flip;
  56 
  57  public:
  58 
  59   static address get_previous_fp_entry()
  60   {
  61     return _get_previous_fp_entry;
  62   }
  63 
  64   static address get_previous_sp_entry()
  65   {
  66     return _get_previous_sp_entry;
  67   }
  68 
  69   static address shenandoah_wb()
  70   {
  71     return _shenandoah_wb;
  72   }
  73 
  74   static address f2i_fixup()
  75   {
  76     return _f2i_fixup;
  77   }
  78 
  79   static address f2l_fixup()
  80   {
  81     return _f2l_fixup;
  82   }
  83 
  84   static address d2i_fixup()
  85   {
  86     return _d2i_fixup;
  87   }
  88 
  89   static address d2l_fixup()
  90   {
  91     return _d2l_fixup;
  92   }
  93 
  94   static address float_sign_mask()
  95   {
  96     return _float_sign_mask;
  97   }
  98 
  99   static address float_sign_flip()
 100   {
 101     return _float_sign_flip;
 102   }
 103 
 104   static address double_sign_mask()
 105   {
 106     return _double_sign_mask;
 107   }
 108 
 109   static address double_sign_flip()
 110   {
 111     return _double_sign_flip;
 112   }
 113 
 114 # include "stubRoutines_x86.hpp"
 115 
 116 };
 117 
 118 #endif // CPU_X86_VM_STUBROUTINES_X86_64_HPP