--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/sparc/vm/bytes_sparc.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,157 @@
+/*
+ * Copyright 1997-2002 Sun Microsystems, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class Bytes: AllStatic {
+ public:
+ // Efficient reading and writing of unaligned unsigned data in platform-specific byte ordering
+ // Sparc needs to check for alignment.
+
+ // can I count on address always being a pointer to an unsigned char? Yes
+
+ // Returns true, if the byte ordering used by Java is different from the nativ byte ordering
+ // of the underlying machine. For example, true for Intel x86, False, for Solaris on Sparc.
+ static inline bool is_Java_byte_ordering_different() { return false; }
+
+ // 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
+ ? *(u2*)p
+ : ( u2(p[0]) << 8 )
+ | ( u2(p[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 )
+ | ( u4( ((u2*)p)[1] ) );
+
+ default: return ( u4(p[0]) << 24 )
+ | ( u4(p[1]) << 16 )
+ | ( u4(p[2]) << 8 )
+ | u4(p[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 )
+ | ( u8( ((u4*)p)[1] ) );
+
+ case 2: return ( u8( ((u2*)p)[0] ) << 48 )
+ | ( u8( ((u2*)p)[1] ) << 32 )
+ | ( u8( ((u2*)p)[2] ) << 16 )
+ | ( u8( ((u2*)p)[3] ) );
+
+ default: 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_native_u2(address p, u2 x) {
+ if ( (intptr_t(p) & 1) == 0 ) *(u2*)p = x;
+ else {
+ p[0] = x >> 8;
+ p[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;
+ ((u2*)p)[1] = x;
+ break;
+
+ default: ((u1*)p)[0] = x >> 24;
+ ((u1*)p)[1] = x >> 16;
+ ((u1*)p)[2] = x >> 8;
+ ((u1*)p)[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;
+ ((u4*)p)[1] = x;
+ break;
+
+ case 2: ((u2*)p)[0] = x >> 48;
+ ((u2*)p)[1] = x >> 32;
+ ((u2*)p)[2] = x >> 16;
+ ((u2*)p)[3] = x;
+ break;
+
+ default: ((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;
+ }
+ }
+
+
+ // Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering)
+ // (no byte-order reversal is needed since SPARC 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); }
+};
+
+//Reconciliation History
+// 1.7 98/02/24 10:18:41 bytes_i486.hpp
+// 1.10 98/04/08 18:47:57 bytes_i486.hpp
+// 1.13 98/07/15 17:10:03 bytes_i486.hpp
+// 1.14 98/08/13 10:38:23 bytes_i486.hpp
+// 1.15 98/10/05 16:30:21 bytes_i486.hpp
+// 1.17 99/06/22 16:37:35 bytes_i486.hpp
+//End