1 /*
   2  * Copyright (c) 2003, 2011, 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 = 22000           // 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   static address _verify_mxcsr_entry;
  46 
  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   static address _mxcsr_std;
  57 
  58  public:
  59 
  60   static address get_previous_fp_entry()
  61   {
  62     return _get_previous_fp_entry;
  63   }
  64 
  65   static address get_previous_sp_entry()
  66   {
  67     return _get_previous_sp_entry;
  68   }
  69 
  70   static address verify_mxcsr_entry()
  71   {
  72     return _verify_mxcsr_entry;
  73   }
  74 
  75   static address f2i_fixup()
  76   {
  77     return _f2i_fixup;
  78   }
  79 
  80   static address f2l_fixup()
  81   {
  82     return _f2l_fixup;
  83   }
  84 
  85   static address d2i_fixup()
  86   {
  87     return _d2i_fixup;
  88   }
  89 
  90   static address d2l_fixup()
  91   {
  92     return _d2l_fixup;
  93   }
  94 
  95   static address float_sign_mask()
  96   {
  97     return _float_sign_mask;
  98   }
  99 
 100   static address float_sign_flip()
 101   {
 102     return _float_sign_flip;
 103   }
 104 
 105   static address double_sign_mask()
 106   {
 107     return _double_sign_mask;
 108   }
 109 
 110   static address double_sign_flip()
 111   {
 112     return _double_sign_flip;
 113   }
 114 
 115   static address mxcsr_std()
 116   {
 117     return _mxcsr_std;
 118   }
 119 };
 120 
 121 #endif // CPU_X86_VM_STUBROUTINES_X86_64_HPP