1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/sparc/vm/bytes_sparc.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,164 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef CPU_SPARC_VM_BYTES_SPARC_HPP
1.29 +#define CPU_SPARC_VM_BYTES_SPARC_HPP
1.30 +
1.31 +#include "memory/allocation.hpp"
1.32 +
1.33 +class Bytes: AllStatic {
1.34 + public:
1.35 + // Efficient reading and writing of unaligned unsigned data in platform-specific byte ordering
1.36 + // Sparc needs to check for alignment.
1.37 +
1.38 + // can I count on address always being a pointer to an unsigned char? Yes
1.39 +
1.40 + // Returns true, if the byte ordering used by Java is different from the nativ byte ordering
1.41 + // of the underlying machine. For example, true for Intel x86, False, for Solaris on Sparc.
1.42 + static inline bool is_Java_byte_ordering_different() { return false; }
1.43 +
1.44 + // Thus, a swap between native and Java ordering is always a no-op:
1.45 + static inline u2 swap_u2(u2 x) { return x; }
1.46 + static inline u4 swap_u4(u4 x) { return x; }
1.47 + static inline u8 swap_u8(u8 x) { return x; }
1.48 +
1.49 + static inline u2 get_native_u2(address p){
1.50 + return (intptr_t(p) & 1) == 0
1.51 + ? *(u2*)p
1.52 + : ( u2(p[0]) << 8 )
1.53 + | ( u2(p[1]) );
1.54 + }
1.55 +
1.56 + static inline u4 get_native_u4(address p) {
1.57 + switch (intptr_t(p) & 3) {
1.58 + case 0: return *(u4*)p;
1.59 +
1.60 + case 2: return ( u4( ((u2*)p)[0] ) << 16 )
1.61 + | ( u4( ((u2*)p)[1] ) );
1.62 +
1.63 + default: return ( u4(p[0]) << 24 )
1.64 + | ( u4(p[1]) << 16 )
1.65 + | ( u4(p[2]) << 8 )
1.66 + | u4(p[3]);
1.67 + }
1.68 + }
1.69 +
1.70 + static inline u8 get_native_u8(address p) {
1.71 + switch (intptr_t(p) & 7) {
1.72 + case 0: return *(u8*)p;
1.73 +
1.74 + case 4: return ( u8( ((u4*)p)[0] ) << 32 )
1.75 + | ( u8( ((u4*)p)[1] ) );
1.76 +
1.77 + case 2: return ( u8( ((u2*)p)[0] ) << 48 )
1.78 + | ( u8( ((u2*)p)[1] ) << 32 )
1.79 + | ( u8( ((u2*)p)[2] ) << 16 )
1.80 + | ( u8( ((u2*)p)[3] ) );
1.81 +
1.82 + default: return ( u8(p[0]) << 56 )
1.83 + | ( u8(p[1]) << 48 )
1.84 + | ( u8(p[2]) << 40 )
1.85 + | ( u8(p[3]) << 32 )
1.86 + | ( u8(p[4]) << 24 )
1.87 + | ( u8(p[5]) << 16 )
1.88 + | ( u8(p[6]) << 8 )
1.89 + | u8(p[7]);
1.90 + }
1.91 + }
1.92 +
1.93 +
1.94 +
1.95 + static inline void put_native_u2(address p, u2 x) {
1.96 + if ( (intptr_t(p) & 1) == 0 ) *(u2*)p = x;
1.97 + else {
1.98 + p[0] = x >> 8;
1.99 + p[1] = x;
1.100 + }
1.101 + }
1.102 +
1.103 + static inline void put_native_u4(address p, u4 x) {
1.104 + switch ( intptr_t(p) & 3 ) {
1.105 + case 0: *(u4*)p = x;
1.106 + break;
1.107 +
1.108 + case 2: ((u2*)p)[0] = x >> 16;
1.109 + ((u2*)p)[1] = x;
1.110 + break;
1.111 +
1.112 + default: ((u1*)p)[0] = x >> 24;
1.113 + ((u1*)p)[1] = x >> 16;
1.114 + ((u1*)p)[2] = x >> 8;
1.115 + ((u1*)p)[3] = x;
1.116 + break;
1.117 + }
1.118 + }
1.119 +
1.120 + static inline void put_native_u8(address p, u8 x) {
1.121 + switch ( intptr_t(p) & 7 ) {
1.122 + case 0: *(u8*)p = x;
1.123 + break;
1.124 +
1.125 + case 4: ((u4*)p)[0] = x >> 32;
1.126 + ((u4*)p)[1] = x;
1.127 + break;
1.128 +
1.129 + case 2: ((u2*)p)[0] = x >> 48;
1.130 + ((u2*)p)[1] = x >> 32;
1.131 + ((u2*)p)[2] = x >> 16;
1.132 + ((u2*)p)[3] = x;
1.133 + break;
1.134 +
1.135 + default: ((u1*)p)[0] = x >> 56;
1.136 + ((u1*)p)[1] = x >> 48;
1.137 + ((u1*)p)[2] = x >> 40;
1.138 + ((u1*)p)[3] = x >> 32;
1.139 + ((u1*)p)[4] = x >> 24;
1.140 + ((u1*)p)[5] = x >> 16;
1.141 + ((u1*)p)[6] = x >> 8;
1.142 + ((u1*)p)[7] = x;
1.143 + }
1.144 + }
1.145 +
1.146 +
1.147 + // Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering)
1.148 + // (no byte-order reversal is needed since SPARC CPUs are big-endian oriented)
1.149 + static inline u2 get_Java_u2(address p) { return get_native_u2(p); }
1.150 + static inline u4 get_Java_u4(address p) { return get_native_u4(p); }
1.151 + static inline u8 get_Java_u8(address p) { return get_native_u8(p); }
1.152 +
1.153 + static inline void put_Java_u2(address p, u2 x) { put_native_u2(p, x); }
1.154 + static inline void put_Java_u4(address p, u4 x) { put_native_u4(p, x); }
1.155 + static inline void put_Java_u8(address p, u8 x) { put_native_u8(p, x); }
1.156 +};
1.157 +
1.158 +//Reconciliation History
1.159 +// 1.7 98/02/24 10:18:41 bytes_i486.hpp
1.160 +// 1.10 98/04/08 18:47:57 bytes_i486.hpp
1.161 +// 1.13 98/07/15 17:10:03 bytes_i486.hpp
1.162 +// 1.14 98/08/13 10:38:23 bytes_i486.hpp
1.163 +// 1.15 98/10/05 16:30:21 bytes_i486.hpp
1.164 +// 1.17 99/06/22 16:37:35 bytes_i486.hpp
1.165 +//End
1.166 +
1.167 +#endif // CPU_SPARC_VM_BYTES_SPARC_HPP
