| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/Java/Openjdk/src/hotspot/cpu/arm/ (Sun/Oracle ©) Datei vom 13.11.2022 mit Größe 5 kB |
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Quellcode-Bibliothek bytes_arm.hpp Sprache: C |
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/*
* Copyright (c) 2008, 2022, 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 CPU_ARM_BYTES_ARM_HPP #define CPU_ARM_BYTES_ARM_HPP #include "memory/allStatic.hpp" #include "utilities/macros.hpp" #ifndef VM_LITTLE_ENDIAN #define VM_LITTLE_ENDIAN 1 #endif class Bytes: AllStatic { public: static inline u2 get_Java_u2(address p) { return (u2(p[0]) << 8) | u2(p[1]); } static inline u4 get_Java_u4(address p) { return u4(p[0]) << 24 | u4(p[1]) << 16 | u4(p[2]) << 8 | u4(p[3]); } static inline u8 get_Java_u8(address p) { return u8(p[0]) << 56 | u8(p[1]) << 48 | u8(p[2]) << 40 | u8(p[3]) << 32 | u8(p[4]) << 24 | u8(p[5]) << 16 | u8(p[6]) << 8 | u8(p[7]); } static inline void put_Java_u2(address p, u2 x) { p[0] = x >> 8; p[1] = x; } static inline void put_Java_u4(address p, u4 x) { ((u1*)p)[0] = x >> 24; ((u1*)p)[1] = x >> 16; ((u1*)p)[2] = x >> 8; ((u1*)p)[3] = x; } static inline void put_Java_u8(address p, u8 x) { ((u1*)p)[0] = x >> 56; ((u1*)p)[1] = x >> 48; ((u1*)p)[2] = x >> 40; ((u1*)p)[3] = x >> 32; ((u1*)p)[4] = x >> 24; ((u1*)p)[5] = x >> 16; ((u1*)p)[6] = x >> 8; ((u1*)p)[7] = x; } #ifdef VM_LITTLE_ENDIAN static inline u2 get_native_u2(address p) { return (intptr_t(p) & 1) == 0 ? *(u2*)p : u2(p[0]) | (u2(p[1]) << 8); } static inline u4 get_native_u4(address p) { switch (intptr_t(p) & 3) { case 0: return *(u4*)p; case 2: return u4(((u2*)p)[0]) | u4(((u2*)p)[1]) << 16; default: return u4(p[0]) | u4(p[1]) << 8 | u4(p[2]) << 16 | u4(p[3]) << 24; } } static inline u8 get_native_u8(address p) { switch (intptr_t(p) & 7) { case 0: return *(u8*)p; case 4: return u8(((u4*)p)[0]) | u8(((u4*)p)[1]) << 32; case 2: return u8(((u2*)p)[0]) | u8(((u2*)p)[1]) << 16 | u8(((u2*)p)[2]) << 32 | u8(((u2*)p)[3]) << 48; default: return u8(p[0]) | u8(p[1]) << 8 | u8(p[2]) << 16 | u8(p[3]) << 24 | u8(p[4]) << 32 | u8(p[5]) << 40 | u8(p[6]) << 48 | u8(p[7]) << 56; } } static inline void put_native_u2(address p, u2 x) { if ((intptr_t(p) & 1) == 0) { *(u2*)p = x; } else { p[0] = x; p[1] = x >> 8; } } static inline void put_native_u4(address p, u4 x) { switch (intptr_t(p) & 3) { case 0: *(u4*)p = x; break; case 2: ((u2*)p)[0] = x; ((u2*)p)[1] = x >> 16; break; default: ((u1*)p)[0] = x; ((u1*)p)[1] = x >> 8; ((u1*)p)[2] = x >> 16; ((u1*)p)[3] = x >> 24; break; } } static inline void put_native_u8(address p, u8 x) { switch (intptr_t(p) & 7) { case 0: *(u8*)p = x; break; case 4: ((u4*)p)[0] = x; ((u4*)p)[1] = x >> 32; break; case 2: ((u2*)p)[0] = x; ((u2*)p)[1] = x >> 16; ((u2*)p)[2] = x >> 32; ((u2*)p)[3] = x >> 48; break; default: ((u1*)p)[0] = x; ((u1*)p)[1] = x >> 8; ((u1*)p)[2] = x >> 16; ((u1*)p)[3] = x >> 24; ((u1*)p)[4] = x >> 32; ((u1*)p)[5] = x >> 40; ((u1*)p)[6] = x >> 48; ((u1*)p)[7] = x >> 56; } } #else static inline u2 get_native_u2(address p) { return get_Java_u2(p); } static inline u4 get_native_u4(address p) { return get_Java_u4(p); } static inline u8 get_native_u8(address p) { return get_Java_u8(p); } static inline void put_native_u2(address p, u2 x) { put_Java_u2(p, x); } static inline void put_native_u4(address p, u4 x) { put_Java_u4(p, x); } static inline void put_native_u8(address p, u8 x) { put_Java_u8(p, x); } #endif // VM_LITTLE_ENDIAN // Efficient swapping of byte ordering static inline u2 swap_u2(u2 x); static inline u4 swap_u4(u4 x); static inline u8 swap_u8(u8 x); }; // The following header contains the implementations of swap_u2, swap_u4, and swap_u8 #include OS_CPU_HEADER(bytes) #endif // CPU_ARM_BYTES_ARM_HPP ¤ Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.0.12Bemerkung: (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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