| /* |
| * 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; |
| } |