| /* Copyright (C) 2011-2021 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 |
