1 /*
   2  * Copyright (c) 2013, Red Hat Inc.
   3  * Copyright (c) 2003, 2011, Oracle and/or its affiliates.
   4  * All rights reserved.
   5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6  *
   7  * This code is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 only, as
   9  * published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  *
  25  */
  26 
  27 #ifndef CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP
  28 #define CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP
  29 
  30 // This file holds the platform specific parts of the StubRoutines
  31 // definition. See stubRoutines.hpp for a description on how to
  32 // extend it.
  33 
  34 static bool    returns_to_call_stub(address return_pc)   {
  35   return return_pc == _call_stub_return_address;
  36 }
  37 
  38 enum platform_dependent_constants {
  39   code_size1 = 19000,          // simply increase if too small (assembler will crash if too small)
  40   code_size2 = 22000           // simply increase if too small (assembler will crash if too small)
  41 };
  42 
  43 class aarch64 {
  44  friend class StubGenerator;
  45 
  46  private:
  47   static address _get_previous_fp_entry;
  48   static address _get_previous_sp_entry;
  49 
  50   static address _f2i_fixup;
  51   static address _f2l_fixup;
  52   static address _d2i_fixup;
  53   static address _d2l_fixup;
  54 
  55   static address _float_sign_mask;
  56   static address _float_sign_flip;
  57   static address _double_sign_mask;
  58   static address _double_sign_flip;
  59 
  60   static address _zero_longs;
  61 
  62  public:
  63 
  64   static address get_previous_fp_entry()
  65   {
  66     return _get_previous_fp_entry;
  67   }
  68 
  69   static address get_previous_sp_entry()
  70   {
  71     return _get_previous_sp_entry;
  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   static address get_zero_longs()
 115   {
 116     return _zero_longs;
 117   }
 118 
 119  private:
 120   static juint    _crc_table[];
 121 
 122 };
 123 
 124 #endif // CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP