sysdeps/sparc/sparc32/pthread_spin_lock.S

   1 /* Copyright (C) 2012-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <sysdep.h>
  19 #include <shlib-compat.h>
  20
  21         .text
  22 ENTRY(__pthread_spin_lock)
  23 1:      ldstub          [%o0], %g1
  24         orcc            %g1, 0x0, %g0
  25         bne,a           2f
  26          ldub           [%o0], %g1
  27         retl
  28          mov            0, %o0
  29 2:      orcc            %g1, 0x0, %g0
  30         bne,a           2b
  31          ldub           [%o0], %g1
  32         ba,a            1b
  33 END(__pthread_spin_lock)
  34 versioned_symbol (libc, __pthread_spin_lock, pthread_spin_lock, GLIBC_2_34)
  35
  36 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
  37 compat_symbol (libpthread, __pthread_spin_lock, pthread_spin_lock, GLIBC_2_2)
  38 #endif