--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/os_cpu/windows_x86/vm/copy_windows_x86.inline.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2003-2004 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.
+ *
+ */
+
+static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+ (void)memmove(to, from, count * HeapWordSize);
+}
+
+static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+#ifdef AMD64
+ switch (count) {
+ case 8: to[7] = from[7];
+ case 7: to[6] = from[6];
+ case 6: to[5] = from[5];
+ case 5: to[4] = from[4];
+ case 4: to[3] = from[3];
+ case 3: to[2] = from[2];
+ case 2: to[1] = from[1];
+ case 1: to[0] = from[0];
+ case 0: break;
+ default:
+ (void)memcpy(to, from, count * HeapWordSize);
+ break;
+ }
+#else
+ (void)memcpy(to, from, count * HeapWordSize);
+#endif // AMD64
+}
+
+static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) {
+ switch (count) {
+ case 8: to[7] = from[7];
+ case 7: to[6] = from[6];
+ case 6: to[5] = from[5];
+ case 5: to[4] = from[4];
+ case 4: to[3] = from[3];
+ case 3: to[2] = from[2];
+ case 2: to[1] = from[1];
+ case 1: to[0] = from[0];
+ case 0: break;
+ default: while (count-- > 0) {
+ *to++ = *from++;
+ }
+ break;
+ }
+}
+
+static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+ (void)memmove(to, from, count * HeapWordSize);
+}
+
+static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
+ pd_disjoint_words(from, to, count);
+}
+
+static void pd_conjoint_bytes(void* from, void* to, size_t count) {
+ (void)memmove(to, from, count);
+}
+
+static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) {
+ pd_conjoint_bytes(from, to, count);
+}
+
+static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) {
+ // FIXME
+ (void)memmove(to, from, count << LogBytesPerShort);
+}
+
+static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) {
+ // FIXME
+ (void)memmove(to, from, count << LogBytesPerInt);
+}
+
+static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) {
+#ifdef AMD64
+ assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
+ pd_conjoint_oops_atomic((oop*)from, (oop*)to, count);
+#else
+ // Guarantee use of fild/fistp or xmm regs via some asm code, because compilers won't.
+ __asm {
+ mov eax, from;
+ mov edx, to;
+ mov ecx, count;
+ cmp eax, edx;
+ jbe downtest;
+ jmp uptest;
+ up:
+ fild qword ptr [eax];
+ fistp qword ptr [edx];
+ add eax, 8;
+ add edx, 8;
+ uptest:
+ sub ecx, 1;
+ jge up;
+ jmp done;
+ down:
+ fild qword ptr [eax][ecx*8];
+ fistp qword ptr [edx][ecx*8];
+ downtest:
+ sub ecx, 1;
+ jge down;
+ done:;
+ }
+#endif // AMD64
+}
+
+static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) {
+ // Do better than this: inline memmove body NEEDS CLEANUP
+ if (from > to) {
+ while (count-- > 0) {
+ // Copy forwards
+ *to++ = *from++;
+ }
+ } else {
+ from += count - 1;
+ to += count - 1;
+ while (count-- > 0) {
+ // Copy backwards
+ *to-- = *from--;
+ }
+ }
+}
+
+static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) {
+#ifdef AMD64
+ pd_conjoint_bytes_atomic(from, to, count);
+#else
+ pd_conjoint_bytes(from, to, count);
+#endif // AMD64
+}
+
+static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) {
+ pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count);
+}
+
+static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) {
+ pd_conjoint_jints_atomic((jint*)from, (jint*)to, count);
+}
+
+static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) {
+ pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
+}
+
+static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) {
+ pd_conjoint_oops_atomic((oop*)from, (oop*)to, count);
+}