/* Processor capability information handling macros - aarch64 version.
   Copyright (C) 2017 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/>.  */

#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H	1

#include <sys/auxv.h>
#include <unistd.h>
#include <ldsodefs.h>
#include <sysdep.h>

/* We cannot provide a general printing function.  */
static inline int
__attribute__ ((unused))
_dl_procinfo (unsigned int type, unsigned long int word)
{
  /* This table should match the information from arch/arm64/kernel/cpuinfo.c
     in the kernel sources.  */
  int i;

  /* Fallback to unknown output mechanism.  */
  if (type == AT_HWCAP2)
    return -1;

  _dl_printf ("AT_HWCAP:   ");

  for (i = 0; i < 32; ++i)
    if ((word >> i) & 1)
      _dl_printf (" %s", GLRO(dl_aarch64_cap_flags)[i]);

  _dl_printf ("\n");

  return 0;
}

static inline const char *
__attribute__ ((unused))
_dl_hwcap_string (int idx)
{
  return GLRO(dl_aarch64_cap_flags)[idx];
};


/* Number of HWCAP bits set.  */
#define _DL_HWCAP_COUNT 13

/* Offset of the last bit allocated in HWCAP.  */
#define _DL_HWCAP_LAST 12

/* HWCAP_CPUID should be available by default to influence IFUNC as well as
   library search.  */
#define HWCAP_IMPORTANT HWCAP_CPUID

static inline int
__attribute__ ((unused))
_dl_string_hwcap (const char *str)
{
  for (int i = 0; i < _DL_HWCAP_COUNT; i++)
    {
      if (strcmp (str, _dl_hwcap_string (i)) == 0)
	return i;
    }
  return -1;
};

/* There're no platforms to filter out.  */
#define _DL_HWCAP_PLATFORM 0

#define _dl_string_platform(str) (-1)

#endif /* dl-procinfo.h */