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fbd26352 | 1 | /* Copyright (C) 2010-2019 Free Software Foundation, Inc. |
4c0315d0 | 2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
4 | This file is part of the GNU Transactional Memory Library (libitm). | |
5 | ||
6 | Libitm is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | Libitm is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | Under Section 7 of GPL version 3, you are granted additional | |
17 | permissions described in the GCC Runtime Library Exception, version | |
18 | 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | You should have received a copy of the GNU General Public License and | |
21 | a copy of the GCC Runtime Library Exception along with this program; | |
22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | <http://www.gnu.org/licenses/>. */ | |
24 | ||
25 | #include "libitm_i.h" | |
26 | ||
27 | namespace GTM HIDDEN { | |
28 | ||
0e5877a5 | 29 | #if !defined(HAVE_ARCH_GTM_THREAD) || !defined(HAVE_ARCH_GTM_THREAD_DISP) |
30 | __thread gtm_thread_tls _gtm_thr_tls; | |
31 | #endif | |
32 | ||
16cd8302 | 33 | // See tls.h for comments. |
34 | void * __attribute__((noinline)) | |
35 | mask_stack_bottom(gtm_thread *tx) | |
36 | { | |
37 | return (uint8_t*)__builtin_dwarf_cfa() - 256; | |
38 | } | |
39 | ||
4c0315d0 | 40 | } // namespace GTM |