/* Enumerate available IFUNC implementations of a function. s390/s390x version.

   Copyright (C) 2015-2018 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

   <http://www.gnu.org/licenses/>.  */

#include <assert.h>

#include <string.h>

#include <wchar.h>

#include <ifunc-impl-list.h>

#include <ifunc-resolve.h>

/* Maximum number of IFUNC implementations.  */

#define MAX_IFUNC	3

/* Fill ARRAY of MAX elements with IFUNC implementations for function

   NAME supported on target machine and return the number of valid

   entries.  */

size_t

__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,

			size_t max)

{

  assert (max >= MAX_IFUNC);

  size_t i = 0;

  /* Get hardware information.  */

  unsigned long int dl_hwcap = GLRO (dl_hwcap);

  unsigned long long stfle_bits = 0ULL;

  if ((dl_hwcap & HWCAP_S390_STFLE)

	&& (dl_hwcap & HWCAP_S390_ZARCH)

	&& (dl_hwcap & HWCAP_S390_HIGH_GPRS))

    {

      S390_STORE_STFLE (stfle_bits);

    }

  IFUNC_IMPL (i, name, memset,

	      IFUNC_IMPL_ADD (array, i, memset,

			      S390_IS_Z196 (stfle_bits), __memset_z196)

	      IFUNC_IMPL_ADD (array, i, memset,

			      S390_IS_Z10 (stfle_bits), __memset_z10)

	      IFUNC_IMPL_ADD (array, i, memset, 1, __memset_default))

  IFUNC_IMPL (i, name, memcmp,

	      IFUNC_IMPL_ADD (array, i, memcmp,

			      S390_IS_Z196 (stfle_bits), __memcmp_z196)

	      IFUNC_IMPL_ADD (array, i, memcmp,

			      S390_IS_Z10 (stfle_bits), __memcmp_z10)

	      IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_default))

#ifdef SHARED

  IFUNC_IMPL (i, name, memcpy,

	      IFUNC_IMPL_ADD (array, i, memcpy,

			      S390_IS_Z196 (stfle_bits), __memcpy_z196)

	      IFUNC_IMPL_ADD (array, i, memcpy,

			      S390_IS_Z10 (stfle_bits), __memcpy_z10)

	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_default))

  IFUNC_IMPL (i, name, mempcpy,

	      IFUNC_IMPL_ADD (array, i, mempcpy,

			      S390_IS_Z196 (stfle_bits), ____mempcpy_z196)

	      IFUNC_IMPL_ADD (array, i, mempcpy,

			      S390_IS_Z10 (stfle_bits), ____mempcpy_z10)

	      IFUNC_IMPL_ADD (array, i, mempcpy, 1, ____mempcpy_default))

#endif /* SHARED */

#ifdef HAVE_S390_VX_ASM_SUPPORT

# define IFUNC_VX_IMPL(FUNC)						\

  IFUNC_IMPL (i, name, FUNC,						\

	      IFUNC_IMPL_ADD (array, i, FUNC, dl_hwcap & HWCAP_S390_VX, \

			      __##FUNC##_vx)				\

	      IFUNC_IMPL_ADD (array, i, FUNC, 1, __##FUNC##_c))

  IFUNC_VX_IMPL (strlen);

  IFUNC_VX_IMPL (wcslen);

  IFUNC_VX_IMPL (strnlen);

  IFUNC_VX_IMPL (wcsnlen);

  IFUNC_VX_IMPL (strcpy);

  IFUNC_VX_IMPL (wcscpy);

  IFUNC_VX_IMPL (stpcpy);

  IFUNC_VX_IMPL (wcpcpy);

  IFUNC_VX_IMPL (strncpy);

  IFUNC_VX_IMPL (wcsncpy);

  IFUNC_VX_IMPL (stpncpy);

  IFUNC_VX_IMPL (wcpncpy);

  IFUNC_VX_IMPL (strcat);

  IFUNC_VX_IMPL (wcscat);

  IFUNC_VX_IMPL (strncat);

  IFUNC_VX_IMPL (wcsncat);

  IFUNC_VX_IMPL (strcmp);

  IFUNC_VX_IMPL (wcscmp);

  IFUNC_VX_IMPL (strncmp);

  IFUNC_VX_IMPL (wcsncmp);

  IFUNC_VX_IMPL (strchr);

  IFUNC_VX_IMPL (wcschr);

  IFUNC_VX_IMPL (strchrnul);

  IFUNC_VX_IMPL (wcschrnul);

  IFUNC_VX_IMPL (strrchr);

  IFUNC_VX_IMPL (wcsrchr);

  IFUNC_VX_IMPL (strspn);

  IFUNC_VX_IMPL (wcsspn);

  IFUNC_VX_IMPL (strpbrk);

  IFUNC_VX_IMPL (wcspbrk);

  IFUNC_VX_IMPL (strcspn);

  IFUNC_VX_IMPL (wcscspn);

  IFUNC_VX_IMPL (memchr);

  IFUNC_VX_IMPL (wmemchr);

  IFUNC_VX_IMPL (rawmemchr);

  IFUNC_VX_IMPL (memccpy);

  IFUNC_VX_IMPL (wmemset);

  IFUNC_VX_IMPL (wmemcmp);

  IFUNC_VX_IMPL (memrchr);

#endif /* HAVE_S390_VX_ASM_SUPPORT */

  return i;

}