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GitHub Repository: PojavLauncherTeam/mobile
 Path: blob/master/src/hotspot/cpu/aarch64/atomic_aarch64.hpp
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/* Copyright (c) 2021, Red Hat Inc. All rights reserved.

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

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 *

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

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

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 * published by the Free Software Foundation.

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 *

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

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

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

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

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 * accompanied this code).

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 *

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

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

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

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 *

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

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

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 * questions.

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 *

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 */

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#ifndef CPU_AARCH64_ATOMIC_AARCH64_HPP

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#define CPU_AARCH64_ATOMIC_AARCH64_HPP

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// Atomic stub implementation.

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// Default implementations are in atomic_linux_aarch64.S

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//

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// All stubs pass arguments the same way

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// x0: src/dest address

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// x1: arg1

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// x2: arg2 (optional)

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// x3, x8, x9: scratch

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typedef uint64_t (*aarch64_atomic_stub_t)(volatile void *ptr, uint64_t arg1, uint64_t arg2);

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// Pointers to stubs

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extern aarch64_atomic_stub_t aarch64_atomic_fetch_add_4_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_fetch_add_8_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_xchg_4_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_xchg_8_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_1_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_4_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_8_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_1_relaxed_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_4_relaxed_impl;

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extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_8_relaxed_impl;

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#endif // CPU_AARCH64_ATOMIC_AARCH64_HPP

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