/* * Copyright ( c ) 1997 , 2022 , Oracle and / or its affiliates . All rights reserved . * Copyright ( c ) 2012 , 2022 SAP SE . 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_PPC_BYTES_PPC_HPP#define CPU_PPC_BYTES_PPC_HPP#include "memory/allStatic.hpp" class Bytes: AllStatic {public :// Efficient reading and writing of unaligned unsigned data in platform-specific byte ordering // PowerPC needs to check for alignment. // Can I count on address always being a pointer to an unsigned char? Yes. #if defined (VM_LITTLE_ENDIAN)// Forward declarations of the compiler-dependent implementation static inline u2 swap_u2(u2 x);static inline u4 swap_u4(u4 x);static inline u8 swap_u8(u8 x);static inline u2 get_native_u2(address p) {return (intptr_t(p) & 1 ) == 0 1 ]) << 8 )0 ]) );static inline u4 get_native_u4(address p) {switch (intptr_t(p) & 3 ) {case 0 : return *(u4*)p;case 2 : return ( u4( ((u2*)p)[1 ] ) << 16 )0 ] ) );default : return ( u4(p[3 ]) << 24 )2 ]) << 16 )1 ]) << 8 )0 ]);static inline u8 get_native_u8(address p) {switch (intptr_t(p) & 7 ) {case 0 : return *(u8*)p;case 4 : return ( u8( ((u4*)p)[1 ] ) << 32 )0 ] ) );case 2 : return ( u8( ((u2*)p)[3 ] ) << 48 )2 ] ) << 32 )1 ] ) << 16 )0 ] ) );default : return ( u8(p[7 ]) << 56 )6 ]) << 48 )5 ]) << 40 )4 ]) << 32 )3 ]) << 24 )2 ]) << 16 )1 ]) << 8 )0 ]);static inline void put_native_u2(address p, u2 x) {1 ) == 0 ) *(u2*)p = x;else {1 ] = x >> 8 ;0 ] = x;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)[1 ] = x >> 16 ;0 ] = x;break ;default : ((u1*)p)[3 ] = x >> 24 ;2 ] = x >> 16 ;1 ] = x >> 8 ;0 ] = x;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)[1 ] = x >> 32 ;0 ] = x;break ;case 2 : ((u2*)p)[3 ] = x >> 48 ;2 ] = x >> 32 ;1 ] = x >> 16 ;0 ] = x;break ;default : ((u1*)p)[7 ] = x >> 56 ;6 ] = x >> 48 ;5 ] = x >> 40 ;4 ] = x >> 32 ;3 ] = x >> 24 ;2 ] = x >> 16 ;1 ] = x >> 8 ;0 ] = x;// Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering) // (no byte-order reversal is needed since Power CPUs are big-endian oriented). 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)); }#else // !defined(VM_LITTLE_ENDIAN) // Thus, a swap between native and Java ordering is always a no-op: static inline u2 swap_u2(u2 x) { return x; }static inline u4 swap_u4(u4 x) { return x; }static inline u8 swap_u8(u8 x) { return x; }static inline u2 get_native_u2(address p) {return (intptr_t(p) & 1 ) == 0 0 ]) << 8 )1 ]) );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 ] ) << 16 )1 ] ) );default : return ( u4(p[0 ]) << 24 )1 ]) << 16 )2 ]) << 8 )3 ]);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 ] ) << 32 )1 ] ) );case 2 : return ( u8( ((u2*)p)[0 ] ) << 48 )1 ] ) << 32 )2 ] ) << 16 )3 ] ) );default : return ( u8(p[0 ]) << 56 )1 ]) << 48 )2 ]) << 40 )3 ]) << 32 )4 ]) << 24 )5 ]) << 16 )6 ]) << 8 )7 ]);static inline void put_native_u2(address p, u2 x) {1 ) == 0 ) { *(u2*)p = x; }else {0 ] = x >> 8 ;1 ] = x;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 >> 16 ;1 ] = x;break ;default : ((u1*)p)[0 ] = x >> 24 ;1 ] = x >> 16 ;2 ] = x >> 8 ;3 ] = x;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 >> 32 ;1 ] = x;break ;case 2 : ((u2*)p)[0 ] = x >> 48 ;1 ] = x >> 32 ;2 ] = x >> 16 ;3 ] = x;break ;default : ((u1*)p)[0 ] = x >> 56 ;1 ] = x >> 48 ;2 ] = x >> 40 ;3 ] = x >> 32 ;4 ] = x >> 24 ;5 ] = x >> 16 ;6 ] = x >> 8 ;7 ] = x;// Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering) // (no byte-order reversal is needed since Power CPUs are big-endian oriented). static inline u2 get_Java_u2(address p) { return get_native_u2(p); }static inline u4 get_Java_u4(address p) { return get_native_u4(p); }static inline u8 get_Java_u8(address p) { return get_native_u8(p); }static inline void put_Java_u2(address p, u2 x) { put_native_u2(p, x); }static inline void put_Java_u4(address p, u4 x) { put_native_u4(p, x); }static inline void put_Java_u8(address p, u8 x) { put_native_u8(p, x); }#endif // VM_LITTLE_ENDIAN #include OS_CPU_HEADER(bytes)#endif // CPU_PPC_BYTES_PPC_HPP
Messung V0.5 in Prozent C=96 H=100 G=97
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-03)
¤ *© Formatika GbR, Deutschland
