| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/Java/Openjdk/src/hotspot/cpu/aarch64/ (Sun/Oracle ©) Datei vom 13.11.2022 mit Größe 2 kB |
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Quelle bytes_aarch64.hpp Sprache: C |
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/*
* Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2014, 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 * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef CPU_AARCH64_BYTES_AARCH64_HPP #define CPU_AARCH64_BYTES_AARCH64_HPP #include "memory/allStatic.hpp" class Bytes: AllStatic { public: // Efficient reading and writing of unaligned unsigned data in platform-specific byte orderi // (no special code is needed since x86 CPUs can access unaligned data) static inline u2 get_native_u2(address p) { return *(u2*)p; } static inline u4 get_native_u4(address p) { return *(u4*)p; } static inline u8 get_native_u8(address p) { return *(u8*)p; } static inline void put_native_u2(address p, u2 x) { *(u2*)p = x; } static inline void put_native_u4(address p, u4 x) { *(u4*)p = x; } static inline void put_native_u8(address p, u8 x) { *(u8*)p = x; } // Efficient reading and writing of unaligned unsigned data in Java // byte ordering (i.e. big-endian ordering). Byte-order reversal is // needed since x86 CPUs use little-endian format. static inline u2 get_Java_u2(address p) { return swap_u2(get_native_u2(p)); } static inline u4 get_Java_u4(address p) { return swap_u4(get_native_u4(p)); } static inline u8 get_Java_u8(address p) { return swap_u8(get_native_u8(p)); } static inline void put_Java_u2(address p, u2 x) { put_native_u2(p, swap_u2(x)); } static inline void put_Java_u4(address p, u4 x) { put_native_u4(p, swap_u4(x)); } static inline void put_Java_u8(address p, u8 x) { put_native_u8(p, swap_u8(x)); } // Efficient swapping of byte ordering static inline u2 swap_u2(u2 x); // compiler-dependent implementation static inline u4 swap_u4(u4 x); // compiler-dependent implementation static inline u8 swap_u8(u8 x); }; // The following header contains the implementations of swap_u2, swap_u4, and swap_u8[_base #include OS_CPU_HEADER(bytes) #endif // CPU_AARCH64_BYTES_AARCH64_HPP ¤ Dauer der Verarbeitung: 0.2 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28