/* Processor capability information handling macros.  PowerPC version.

   Copyright (C) 2005-2018 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/>.  */

#ifndef _DL_PROCINFO_H

#define _DL_PROCINFO_H 1

#include <ldsodefs.h>

#include <sysdep.h>	/* This defines the PPC_FEATURE[2]_* macros.  */

/* The total number of available bits (including those prior to

   _DL_HWCAP_FIRST).  Some of these bits might not be used.  */

#define _DL_HWCAP_COUNT		64

/* Features started at bit 31 and decremented as new features were added.  */

#define _DL_HWCAP_LAST		31

/* AT_HWCAP2 features started at bit 31 and decremented as new features were

   added.  HWCAP2 feature bits start at bit 0.  */

#define _DL_HWCAP2_LAST		31

/* These bits influence library search.  */

#define HWCAP_IMPORTANT		(PPC_FEATURE_HAS_ALTIVEC \

				+ PPC_FEATURE_HAS_DFP)

#define _DL_PLATFORMS_COUNT	15

#define _DL_FIRST_PLATFORM	32

/* Mask to filter out platforms.  */

#define _DL_HWCAP_PLATFORM	(((1ULL << _DL_PLATFORMS_COUNT) - 1) \

				<< _DL_FIRST_PLATFORM)

/* Platform bits (relative to _DL_FIRST_PLATFORM).  */

#define PPC_PLATFORM_POWER4		0

#define PPC_PLATFORM_PPC970		1

#define PPC_PLATFORM_POWER5		2

#define PPC_PLATFORM_POWER5_PLUS	3

#define PPC_PLATFORM_POWER6		4

#define PPC_PLATFORM_CELL_BE		5

#define PPC_PLATFORM_POWER6X		6

#define PPC_PLATFORM_POWER7		7

#define PPC_PLATFORM_PPCA2		8

#define PPC_PLATFORM_PPC405		9

#define PPC_PLATFORM_PPC440		10

#define PPC_PLATFORM_PPC464		11

#define PPC_PLATFORM_PPC476		12

#define PPC_PLATFORM_POWER8		13

#define PPC_PLATFORM_POWER9		14

static inline const char *

__attribute__ ((unused))

_dl_hwcap_string (int idx)

{

  return GLRO(dl_powerpc_cap_flags)[idx];

}

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;

}

static inline int

__attribute__ ((unused, always_inline))

_dl_string_platform (const char *str)

{

  if (str == NULL)

    return -1;

  if (strncmp (str, "power", 5) == 0)

    {

      int ret;

      str += 5;

      switch (*str)

	{

	case '4':

	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4;

	  break;

	case '5':

	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5;

	  if (str[1] == '+')

	    {

	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS;

	      ++str;

	    }

	  break;

	case '6':

	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6;

	  if (str[1] == 'x')

	    {

	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X;

	      ++str;

	    }

	  break;

	case '7':

	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7;

	  break;

	case '8':

	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER8;

	  break;

	case '9':

	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER9;

	  break;

	default:

	  return -1;

	}

      if (str[1] == '\0')

       return ret;

    }

  else if (strncmp (str, "ppc", 3) == 0)

    {

      if (strcmp (str + 3, "970") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;

      else if (strcmp (str + 3, "-cell-be") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;

      else if (strcmp (str + 3, "a2") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPCA2;

      else if (strcmp (str + 3, "405") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405;

      else if (strcmp (str + 3, "440") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440;

      else if (strcmp (str + 3, "464") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464;

      else if (strcmp (str + 3, "476") == 0)

	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476;

    }

  return -1;

}

#if IS_IN (rtld)

static inline int

__attribute__ ((unused))

_dl_procinfo (unsigned int type, unsigned long int word)

{

  switch(type)

    {

    case AT_HWCAP:

      _dl_printf ("AT_HWCAP:       ");

      for (int i = 0; i <= _DL_HWCAP_LAST; ++i)

       if (word & (1 << i))

         _dl_printf (" %s", _dl_hwcap_string (i));

      break;

    case AT_HWCAP2:

      {

       unsigned int offset = _DL_HWCAP_LAST + 1;

       _dl_printf ("AT_HWCAP2:      ");

        /* We have to go through them all because the kernel added the

          AT_HWCAP2 features starting with the high bits.  */

       for (int i = 0; i <= _DL_HWCAP2_LAST; ++i)

         if (word & (1 << i))

           _dl_printf (" %s", _dl_hwcap_string (offset + i));

       break;

      }

    default:

      /* This should not happen.  */

      return -1;

    }

   _dl_printf ("\n");

  return 0;

}

#endif

#endif /* dl-procinfo.h */