/* 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>

#include <ifunc-memset.h>

#include <ifunc-memcmp.h>

#include <ifunc-memcpy.h>

#include <ifunc-strstr.h>

#include <ifunc-memmem.h>

#include <ifunc-strlen.h>

#include <ifunc-strnlen.h>

#include <ifunc-strcpy.h>

#include <ifunc-stpcpy.h>

#include <ifunc-strncpy.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);

    }

#if HAVE_MEMSET_IFUNC

  IFUNC_IMPL (i, name, memset,

# if HAVE_MEMSET_Z196

	      IFUNC_IMPL_ADD (array, i, memset,

			      S390_IS_Z196 (stfle_bits), MEMSET_Z196)

# endif

# if HAVE_MEMSET_Z10

	      IFUNC_IMPL_ADD (array, i, memset,

			      S390_IS_Z10 (stfle_bits), MEMSET_Z10)

# endif

# if HAVE_MEMSET_Z900_G5

	      IFUNC_IMPL_ADD (array, i, memset, 1, MEMSET_Z900_G5)

# endif

	      )

  /* Note: bzero is implemented in memset.  */

  IFUNC_IMPL (i, name, bzero,

# if HAVE_MEMSET_Z196

	      IFUNC_IMPL_ADD (array, i, bzero,

			      S390_IS_Z196 (stfle_bits), BZERO_Z196)

# endif

# if HAVE_MEMSET_Z10

	      IFUNC_IMPL_ADD (array, i, bzero,

			      S390_IS_Z10 (stfle_bits), BZERO_Z10)

# endif

# if HAVE_MEMSET_Z900_G5

	      IFUNC_IMPL_ADD (array, i, bzero, 1, BZERO_Z900_G5)

# endif

	      )

#endif /* HAVE_MEMSET_IFUNC */

#if HAVE_MEMCMP_IFUNC

  IFUNC_IMPL (i, name, memcmp,

# if HAVE_MEMCMP_Z196

	      IFUNC_IMPL_ADD (array, i, memcmp,

			      S390_IS_Z196 (stfle_bits), MEMCMP_Z196)

# endif

# if HAVE_MEMCMP_Z10

	      IFUNC_IMPL_ADD (array, i, memcmp,

			      S390_IS_Z10 (stfle_bits), MEMCMP_Z10)

# endif

# if HAVE_MEMCMP_Z900_G5

	      IFUNC_IMPL_ADD (array, i, memcmp, 1, MEMCMP_Z900_G5)

# endif

	      )

#endif /* HAVE_MEMCMP_IFUNC */

#if HAVE_MEMCPY_IFUNC

  IFUNC_IMPL (i, name, memcpy,

# if HAVE_MEMCPY_Z196

	      IFUNC_IMPL_ADD (array, i, memcpy,

			      S390_IS_Z196 (stfle_bits), MEMCPY_Z196)

# endif

# if HAVE_MEMCPY_Z10

	      IFUNC_IMPL_ADD (array, i, memcpy,

			      S390_IS_Z10 (stfle_bits), MEMCPY_Z10)

# endif

# if HAVE_MEMCPY_Z900_G5

	      IFUNC_IMPL_ADD (array, i, memcpy, 1, MEMCPY_Z900_G5)

# endif

	      )

  IFUNC_IMPL (i, name, mempcpy,

# if HAVE_MEMCPY_Z196

	      IFUNC_IMPL_ADD (array, i, mempcpy,

			      S390_IS_Z196 (stfle_bits), MEMPCPY_Z196)

# endif

# if HAVE_MEMCPY_Z10

	      IFUNC_IMPL_ADD (array, i, mempcpy,

			      S390_IS_Z10 (stfle_bits), MEMPCPY_Z10)

# endif

# if HAVE_MEMCPY_Z900_G5

	      IFUNC_IMPL_ADD (array, i, mempcpy, 1, MEMPCPY_Z900_G5)

# endif

	      )

#endif /* HAVE_MEMCPY_IFUNC  */

#if HAVE_MEMMOVE_IFUNC

    IFUNC_IMPL (i, name, memmove,

# if HAVE_MEMMOVE_Z13

		IFUNC_IMPL_ADD (array, i, memmove,

				dl_hwcap & HWCAP_S390_VX, MEMMOVE_Z13)

# endif

# if HAVE_MEMMOVE_C

		IFUNC_IMPL_ADD (array, i, memmove, 1, MEMMOVE_C)

# endif

		)

#endif /* HAVE_MEMMOVE_IFUNC  */

#if HAVE_STRSTR_IFUNC

    IFUNC_IMPL (i, name, strstr,

# if HAVE_STRSTR_Z13

		IFUNC_IMPL_ADD (array, i, strstr,

				dl_hwcap & HWCAP_S390_VX, STRSTR_Z13)

# endif

# if HAVE_STRSTR_C

		IFUNC_IMPL_ADD (array, i, strstr, 1, STRSTR_C)

# endif

		)

#endif /* HAVE_STRSTR_IFUNC  */

#if HAVE_MEMMEM_IFUNC

    IFUNC_IMPL (i, name, memmem,

# if HAVE_MEMMEM_Z13

		IFUNC_IMPL_ADD (array, i, memmem,

				dl_hwcap & HWCAP_S390_VX, MEMMEM_Z13)

# endif

# if HAVE_MEMMEM_C

		IFUNC_IMPL_ADD (array, i, memmem, 1, MEMMEM_C)

# endif

		)

#endif /* HAVE_MEMMEM_IFUNC  */

#if HAVE_STRLEN_IFUNC

    IFUNC_IMPL (i, name, strlen,

# if HAVE_STRLEN_Z13

		IFUNC_IMPL_ADD (array, i, strlen,

				dl_hwcap & HWCAP_S390_VX, STRLEN_Z13)

# endif

# if HAVE_STRLEN_C

		IFUNC_IMPL_ADD (array, i, strlen, 1, STRLEN_C)

# endif

		)

#endif /* HAVE_STRLEN_IFUNC  */

#if HAVE_STRNLEN_IFUNC

    IFUNC_IMPL (i, name, strnlen,

# if HAVE_STRNLEN_Z13

		IFUNC_IMPL_ADD (array, i, strnlen,

				dl_hwcap & HWCAP_S390_VX, STRNLEN_Z13)

# endif

# if HAVE_STRNLEN_C

		IFUNC_IMPL_ADD (array, i, strnlen, 1, STRNLEN_C)

# endif

		)

#endif /* HAVE_STRNLEN_IFUNC  */

#if HAVE_STRCPY_IFUNC

    IFUNC_IMPL (i, name, strcpy,

# if HAVE_STRCPY_Z13

		IFUNC_IMPL_ADD (array, i, strcpy,

				dl_hwcap & HWCAP_S390_VX, STRCPY_Z13)

# endif

# if HAVE_STRCPY_Z900_G5

		IFUNC_IMPL_ADD (array, i, strcpy, 1, STRCPY_Z900_G5)

# endif

		)

#endif /* HAVE_STRCPY_IFUNC  */

#if HAVE_STPCPY_IFUNC

    IFUNC_IMPL (i, name, stpcpy,

# if HAVE_STPCPY_Z13

		IFUNC_IMPL_ADD (array, i, stpcpy,

				dl_hwcap & HWCAP_S390_VX, STPCPY_Z13)

# endif

# if HAVE_STPCPY_C

		IFUNC_IMPL_ADD (array, i, stpcpy, 1, STPCPY_C)

# endif

		)

#endif /* HAVE_STPCPY_IFUNC  */

#if HAVE_STRNCPY_IFUNC

    IFUNC_IMPL (i, name, strncpy,

# if HAVE_STRNCPY_Z13

		IFUNC_IMPL_ADD (array, i, strncpy,

				dl_hwcap & HWCAP_S390_VX, STRNCPY_Z13)

# endif

# if HAVE_STRNCPY_Z900_G5

		IFUNC_IMPL_ADD (array, i, strncpy, 1, STRNCPY_Z900_G5)

# endif

		)

#endif /* HAVE_STRNCPY_IFUNC  */

#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 (wcslen);

  IFUNC_VX_IMPL (wcsnlen);

  IFUNC_VX_IMPL (wcscpy);

  IFUNC_VX_IMPL (wcpcpy);

  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;

}