1 | /* Define macros for stack address aliasing issues for NPTL. i686 version. |
2 | Copyright (C) 2014-2016 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | /* It turns out that stack coloring is in general not good on P4s. Some |
20 | applications will benefit. We will probably have a configuration option |
21 | at some point. To enable coloring, set this to 128. */ |
22 | #define COLORING_INCREMENT 0 |
23 | |
24 | /* What is useful is to avoid the 64k aliasing problem which reliably |
25 | happens if all stacks use sizes which are a multiple of 64k. Tell |
26 | the stack allocator to disturb this by allocation one more page if |
27 | necessary. */ |
28 | #define MULTI_PAGE_ALIASING 65536 |
29 | |