1  /* Multiple versions of strncpy.
       2     Copyright (C) 2014-2023 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  /* Define multiple versions only for definition in libc. */
      20  #if IS_IN (libc)
      21  # define strncpy __redirect_strncpy
      22  /* Omit the strncpy inline definitions because it would redefine strncpy.  */
      23  # define __NO_STRING_INLINES
      24  # include <string.h>
      25  # include <shlib-compat.h>
      26  # include "init-arch.h"
      27  
      28  extern __typeof (strncpy) __strncpy_ppc attribute_hidden;
      29  extern __typeof (strncpy) __strncpy_power7 attribute_hidden;
      30  extern __typeof (strncpy) __strncpy_power8 attribute_hidden;
      31  # ifdef __LITTLE_ENDIAN__
      32  extern __typeof (strncpy) __strncpy_power9 attribute_hidden;
      33  # endif
      34  # undef strncpy
      35  
      36  /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
      37   ifunc symbol properly. */
      38  libc_ifunc_redirected (__redirect_strncpy, strncpy,
      39  # ifdef __LITTLE_ENDIAN__
      40  		       (hwcap2 & PPC_FEATURE2_ARCH_3_00) &&
      41  		       (hwcap & PPC_FEATURE_HAS_VSX)
      42  		       ? __strncpy_power9 :
      43  # endif
      44  		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
      45  		       ? __strncpy_power8
      46  		       : (hwcap & PPC_FEATURE_ARCH_2_06)
      47  			 ? __strncpy_power7
      48  			 : __strncpy_ppc);
      49  
      50  #endif