Mercurial > hg > truffle
comparison src/cpu/x86/vm/registerMap_x86.cpp @ 20970:a560c9b81f0f
Add suport for oops in vector registers at safepoints
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Tue, 14 Apr 2015 22:20:07 -0700 |
parents | |
children | 658db9861109 |
comparison
equal
deleted
inserted
replaced
20969:534f0dde2810 | 20970:a560c9b81f0f |
---|---|
1 /* | |
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 #include <runtime/registerMap.hpp> | |
26 #include "vmreg_x86.inline.hpp" | |
27 | |
28 address RegisterMap::pd_location(VMReg reg) const { | |
29 if (reg->is_XMMRegister()) { | |
30 int regBase = reg->value() - ConcreteRegisterImpl::max_fpr; | |
31 if (regBase % 4 == 0) { | |
32 // Reads of the low and high 16 byte parts should be handled by location itself | |
33 return NULL; | |
34 } | |
35 VMReg baseReg = as_XMMRegister(regBase >> 3)->as_VMReg(); | |
36 intptr_t offset = (reg->value() - baseReg->value()) * 4; | |
37 if (offset >= 16) { | |
38 // The high part of YMM registers are saved in a their own area in the frame | |
39 baseReg = baseReg->next()->next()->next()->next(); | |
40 offset -= 16; | |
41 } | |
42 address baseLocation = location(baseReg); | |
43 if (baseLocation != NULL) { | |
44 return baseLocation + offset; | |
45 } | |
46 } | |
47 return NULL; | |
48 } |