1  /* Architecture-specific glibc-hwcaps subdirectories.  powerpc64le version.
       2     Copyright (C) 2020-2023 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  #include <dl-hwcaps.h>
      20  #include <ldsodefs.h>
      21  
      22  const char _dl_hwcaps_subdirs[] = "power10:power9";
      23  enum { subdirs_count = 2 }; /* Number of components in _dl_hwcaps_subdirs.  */
      24  
      25  uint32_t
      26  _dl_hwcaps_subdirs_active (void)
      27  {
      28    int active = 0;
      29  
      30    /* Test in reverse preference order.  Altivec and VSX are implied by
      31       the powerpc64le ABI definition.  */
      32  
      33    /* POWER9.  GCC enables float128 hardware support for -mcpu=power9.  */
      34    if ((GLRO (dl_hwcap2) & PPC_FEATURE2_ARCH_3_00) == 0
      35        || (GLRO (dl_hwcap2) & PPC_FEATURE2_HAS_IEEE128) == 0)
      36      return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
      37    ++active;
      38  
      39    /* POWER10.  GCC defines __MMA__ for -mcpu=power10.  */
      40    if ((GLRO (dl_hwcap2) & PPC_FEATURE2_ARCH_3_1) == 0
      41        || (GLRO (dl_hwcap2) & PPC_FEATURE2_MMA) == 0)
      42      return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
      43    ++active;
      44  
      45    return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
      46  }