[PATCH v2 3/3] powerpc64le: Add glibc-hwcaps support

[Paul A. Clarke]

On Mon, Oct 12, 2020 at 05:22:11PM +0200, Florian Weimer via Libc-alpha wrote:
> The "power10" and "power9" subdirectories are selected.
> ---
[snip]
> diff --git a/sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c b/sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c
> new file mode 100644
> index 0000000000..1fa3735a8c
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c
> @@ -0,0 +1,39 @@
> +/* Architecture-specific glibc-hwcaps subdirectories.  powerpc64le version.
> +   Copyright (C) 2020 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <dl-hwcaps.h>
> +#include <ldsodefs.h>
> +
> +const char _dl_hwcaps_subdirs[] = "power10:power9";
> +enum { subdirs_count = 2 };
> +
> +uint32_t
> +_dl_hwcaps_subdirs_active (void)
> +{
> +  int active = 0;
> +
> +  if ((GLRO (dl_hwcap2) & PPC_FEATURE2_ARCH_3_00) == 0)
> +    return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
> +  ++active;
> +
> +  if ((GLRO (dl_hwcap2) & PPC_FEATURE2_ARCH_3_1) == 0)
> +    return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
> +  ++active;
> +
> +  return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
> +}
[snip]

LGTM

PC