/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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 */

#ifndef CPU_SPARC_VM_STUBROUTINES_SPARC_HPP

#define CPU_SPARC_VM_STUBROUTINES_SPARC_HPP

// This file holds the platform specific parts of the StubRoutines

// definition. See stubRoutines.hpp for a description on how to

// extend it.

// So unfortunately c2 will call with a pc from a frame object

// (already adjusted) and a raw pc (unadjusted), so we need to check both.

// It didn't use to be like this before adapter removal.

static bool returns_to_call_stub(address return_pc)   {

  return ((return_pc + frame::pc_return_offset) == _call_stub_return_address) ||

          (return_pc == _call_stub_return_address );

}

enum /* platform_dependent_constants */ {

  // %%%%%%%% May be able to shrink this a lot

  code_size1 = 20000,           // simply increase if too small (assembler will crash if too small)

  code_size2 = 29000            // simply increase if too small (assembler will crash if too small)

};

class Sparc {

 friend class StubGenerator;

 private:

  static address _test_stop_entry;

  static address _stop_subroutine_entry;

  static address _flush_callers_register_windows_entry;

  static address _partial_subtype_check;

  // masks and table for CRC32

  static uint64_t _crc_by128_masks[];

  static juint    _crc_table[];

  static juint    _crc32c_table[];

 public:

  // test assembler stop routine by setting registers

  static void (*test_stop_entry()) ()                     { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); }

  // a subroutine for debugging assembler code

  static address stop_subroutine_entry_address()          { return (address)&_stop_subroutine_entry; }

  // flushes (all but current) register window

  static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); }

  static address partial_subtype_check()                  { return _partial_subtype_check; }

  static address crc_by128_masks_addr()  { return (address)_crc_by128_masks; }

};

#endif // CPU_SPARC_VM_STUBROUTINES_SPARC_HPP