--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/registerMap_x86.cpp Thu Oct 08 12:49:30 2015 -1000
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2015, 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "runtime/registerMap.hpp"
+#include "vmreg_x86.inline.hpp"
+
+address RegisterMap::pd_location(VMReg reg) const {
+ if (reg->is_XMMRegister()) {
+ int regBase = reg->value() - ConcreteRegisterImpl::max_fpr;
+ if (regBase % 4 == 0) {
+ // Reads of the low and high 16 byte parts should be handled by location itself
+ // because they have separate callee saved entries.
+ // See RegisterSaver::save_live_registers().
+ return NULL;
+ }
+ VMReg baseReg = as_XMMRegister(regBase / XMMRegisterImpl::max_slots_per_register)->as_VMReg();
+ intptr_t offset = (reg->value() - baseReg->value()) * VMRegImpl::stack_slot_size; // offset in bytes
+ if (offset >= 16) {
+ // The high part of YMM registers are saved in a their own area in the frame
+ baseReg = baseReg->next()->next()->next()->next();
+ offset -= 16;
+ }
+ address baseLocation = location(baseReg);
+ if (baseLocation != NULL) {
+ return baseLocation + offset;
+ }
+ }
+ return NULL;
+}