| /* Copyright (c) 2021, Red Hat Inc. 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 |
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| |
| #ifndef CPU_AARCH64_ATOMIC_AARCH64_HPP |
| #define CPU_AARCH64_ATOMIC_AARCH64_HPP |
| |
| // Atomic stub implementation. |
| // Default implementations are in atomic_linux_aarch64.S |
| // |
| // All stubs pass arguments the same way |
| // x0: src/dest address |
| // x1: arg1 |
| // x2: arg2 (optional) |
| // x3, x8, x9: scratch |
| typedef uint64_t (*aarch64_atomic_stub_t)(volatile void *ptr, uint64_t arg1, uint64_t arg2); |
| |
| // Pointers to stubs |
| extern aarch64_atomic_stub_t aarch64_atomic_fetch_add_4_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_fetch_add_8_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_xchg_4_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_xchg_8_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_1_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_4_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_8_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_1_relaxed_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_4_relaxed_impl; |
| extern aarch64_atomic_stub_t aarch64_atomic_cmpxchg_8_relaxed_impl; |
| |
| #endif // CPU_AARCH64_ATOMIC_AARCH64_HPP |
