libitm/config/sparc/target.h

   1 /* Copyright (C) 2012-2017 Free Software Foundation, Inc.
   2
   3    This file is part of the GNU Transactional Memory Library (libitm).
   4
   5    Libitm is free software; you can redistribute it and/or modify it
   6    under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
  11    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13    more details.
  14
  15    Under Section 7 of GPL version 3, you are granted additional
  16    permissions described in the GCC Runtime Library Exception, version
  17    3.1, as published by the Free Software Foundation.
  18
  19    You should have received a copy of the GNU General Public License and
  20    a copy of the GCC Runtime Library Exception along with this program;
  21    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  22    <http://www.gnu.org/licenses/>.  */
  23
  24 namespace GTM HIDDEN {
  25
  26 typedef struct gtm_jmpbuf
  27 {
  28   void *cfa;
  29   unsigned long pc;
  30 } gtm_jmpbuf;
  31
  32 /* The size of one line in hardware caches (in bytes).  We use the primary
  33    cache line size documented for the UltraSPARC T1/T2.  */
  34 #define HW_CACHELINE_SIZE 16
  35
  36 static inline void
  37 cpu_relax (void)
  38 {
  39   __asm volatile ("rd %%ccr, %%g0" : : : "memory");
  40 }
  41
  42 } // namespace GTM