/*

 * Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP

#define OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP

#ifndef __thumb__

  enum {

    // Offset to add to frame::_fp when dealing with non-thumb C frames

#ifdef AARCH64

    C_frame_offset =  0,

#else

    C_frame_offset =  -1,

#endif

  };

#endif

  static void setup_fpu();

  static bool is_allocatable(size_t bytes);

  // Used to register dynamic code cache area with the OS

  // Note: Currently only used in 64 bit Windows implementations

  static bool register_code_area(char *low, char *high) { return true; }

#ifndef AARCH64

  static int64_t (*atomic_cmpxchg_long_func)(int64_t compare_value,

                                             int64_t exchange_value,

                                             volatile int64_t *dest);

  static int64_t (*atomic_load_long_func)(const volatile int64_t*);

  static void (*atomic_store_long_func)(int64_t, volatile int64_t*);

  static int32_t  (*atomic_add_func)(int32_t add_value, volatile int32_t *dest);

  static int32_t  (*atomic_xchg_func)(int32_t exchange_value, volatile int32_t *dest);

  static int32_t  (*atomic_cmpxchg_func)(int32_t compare_value,

                                         int32_t exchange_value,

                                         volatile int32_t *dest);

  static int64_t atomic_cmpxchg_long_bootstrap(int64_t, int64_t, volatile int64_t*);

  static int64_t atomic_load_long_bootstrap(const volatile int64_t*);

  static void atomic_store_long_bootstrap(int64_t, volatile int64_t*);

  static int32_t  atomic_add_bootstrap(int32_t add_value, volatile int32_t *dest);

  static int32_t  atomic_xchg_bootstrap(int32_t exchange_value, volatile int32_t *dest);

  static int32_t  atomic_cmpxchg_bootstrap(int32_t compare_value,

                                           int32_t exchange_value,

                                           volatile int32_t *dest);

#endif // !AARCH64

#endif // OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP