1  /* Multiple versions of strlen. PowerPC64 version.
       2     Copyright (C) 2013-2023 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  #if defined SHARED && IS_IN (libc)
      20  /* Redefine strlen so that the compiler won't complain about the type
      21     mismatch with the IFUNC selector in strong_alias, below.  */
      22  # undef strlen
      23  # define strlen __redirect_strlen
      24  # include <string.h>
      25  # include <shlib-compat.h>
      26  # include "init-arch.h"
      27  
      28  extern __typeof (__redirect_strlen) __libc_strlen;
      29  
      30  extern __typeof (__redirect_strlen) __strlen_ppc attribute_hidden;
      31  extern __typeof (__redirect_strlen) __strlen_power7 attribute_hidden;
      32  extern __typeof (__redirect_strlen) __strlen_power8 attribute_hidden;
      33  extern __typeof (__redirect_strlen) __strlen_power9 attribute_hidden;
      34  extern __typeof (__redirect_strlen) __strlen_power10 attribute_hidden;
      35  
      36  libc_ifunc (__libc_strlen,
      37  # ifdef __LITTLE_ENDIAN__
      38  	(hwcap2 & PPC_FEATURE2_ARCH_3_1
      39  	 && hwcap & PPC_FEATURE_HAS_VSX)
      40  	? __strlen_power10 :
      41  	  (hwcap2 & PPC_FEATURE2_ARCH_3_00
      42  	   && hwcap & PPC_FEATURE_HAS_VSX)
      43  	  ? __strlen_power9 :
      44  # endif
      45  	    (hwcap2 & PPC_FEATURE2_ARCH_2_07
      46  	     && hwcap & PPC_FEATURE_HAS_ALTIVEC)
      47  	    ? __strlen_power8 :
      48  	      (hwcap & PPC_FEATURE_ARCH_2_06)
      49  	      ? __strlen_power7
      50  	      : __strlen_ppc);
      51  
      52  #undef strlen
      53  strong_alias (__libc_strlen, strlen)
      54  libc_hidden_ver (__libc_strlen, strlen)
      55  #endif