1  /* Definition for thread-local data handling.  ARM/Linux version.
       2     Copyright (C) 2005-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library.  If not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef _LINUX_ARM_TLS_H
      20  #define _LINUX_ARM_TLS_H	1
      21  
      22  /* Almost everything is OS-independent and common for all NPTL on ARM.  */
      23  #include <sysdeps/arm/nptl/tls.h>
      24  
      25  #ifndef __ASSEMBLER__
      26  
      27  /* Get system call information.  */
      28  # include <sysdep.h>
      29  
      30  /* Code to initially initialize the thread pointer.  This might need
      31     special attention since 'errno' is not yet available and if the
      32     operation can cause a failure 'errno' must not be touched.  */
      33  # define TLS_INIT_TP(tcbp) \
      34    ({ long int result_var;						\
      35       result_var = INTERNAL_SYSCALL_CALL (set_tls, (tcbp));		\
      36       !INTERNAL_SYSCALL_ERROR_P (result_var); })
      37  
      38  #endif /* __ASSEMBLER__ */
      39  
      40  #endif  /* tls.h */