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- /* Copyright (C) 2011-2015 Free Software Foundation, Inc.
- Contributed by Richard Henderson <rth@redhat.com>.
- This file is part of the GNU Transactional Memory Library (libitm).
- Libitm is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- Libitm 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 for
- more details.
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
- namespace GTM HIDDEN {
- typedef struct gtm_jmpbuf
- {
- unsigned long long vfp[8]; /* d8-d15 */
- unsigned long long iwmmxt[6]; /* cr10-cr15 */
- unsigned long gr[8]; /* r4-r11 */
- void *cfa;
- unsigned long pc;
- } gtm_jmpbuf;
- /* ??? The size of one line in hardware caches (in bytes). */
- #define HW_CACHELINE_SIZE 64
- static inline void
- cpu_relax (void)
- {
- /* ??? The kernel uses the condition
- #if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
- Given that we're actually just waiting, it doesn't seem like it
- hurts to simply use a full barrier all the time. */
- __sync_synchronize ();
- }
- } // namespace GTM
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