sysdeps/powerpc/dl-procinfo.h

   1 /* Processor capability information handling macros.  PowerPC version.
   2    Copyright (C) 2005-2013 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _DL_PROCINFO_H
  20 #define _DL_PROCINFO_H 1
  21
  22 #include <ldsodefs.h>
  23 #include <sysdep.h>     /* This defines the PPC_FEATURE_* macros.  */
  24
  25 /* There are 25 bits used, but they are bits 7..31.  */
  26 #define _DL_HWCAP_FIRST         7
  27 #define _DL_HWCAP_COUNT         32
  28
  29 /* These bits influence library search.  */
  30 #define HWCAP_IMPORTANT         (PPC_FEATURE_HAS_ALTIVEC \
  31                                 + PPC_FEATURE_HAS_DFP)
  32
  33 #define _DL_PLATFORMS_COUNT     14
  34
  35 #define _DL_FIRST_PLATFORM      32
  36 /* Mask to filter out platforms.  */
  37 #define _DL_HWCAP_PLATFORM      (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
  38                                 << _DL_FIRST_PLATFORM)
  39
  40 /* Platform bits (relative to _DL_FIRST_PLATFORM).  */
  41 #define PPC_PLATFORM_POWER4             0
  42 #define PPC_PLATFORM_PPC970             1
  43 #define PPC_PLATFORM_POWER5             2
  44 #define PPC_PLATFORM_POWER5_PLUS        3
  45 #define PPC_PLATFORM_POWER6             4
  46 #define PPC_PLATFORM_CELL_BE            5
  47 #define PPC_PLATFORM_POWER6X            6
  48 #define PPC_PLATFORM_POWER7             7
  49 #define PPC_PLATFORM_PPCA2              8
  50 #define PPC_PLATFORM_PPC405             9
  51 #define PPC_PLATFORM_PPC440             10
  52 #define PPC_PLATFORM_PPC464             11
  53 #define PPC_PLATFORM_PPC476             12
  54 #define PPC_PLATFORM_POWER8             13
  55
  56 static inline const char *
  57 __attribute__ ((unused))
  58 _dl_hwcap_string (int idx)
  59 {
  60   return GLRO(dl_powerpc_cap_flags)[idx - _DL_HWCAP_FIRST];
  61 }
  62
  63 static inline const char *
  64 __attribute__ ((unused))
  65 _dl_platform_string (int idx)
  66 {
  67   return GLRO(dl_powerpc_platforms)[idx - _DL_FIRST_PLATFORM];
  68 }
  69
  70 static inline int
  71 __attribute__ ((unused))
  72 _dl_string_hwcap (const char *str)
  73 {
  74   for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
  75     if (strcmp (str, _dl_hwcap_string (i)) == 0)
  76       return i;
  77   return -1;
  78 }
  79
  80 static inline int
  81 __attribute__ ((unused, always_inline))
  82 _dl_string_platform (const char *str)
  83 {
  84   if (str == NULL)
  85     return -1;
  86
  87   if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_POWER4], 5) == 0)
  88     {
  89       int ret;
  90       str += 5;
  91       switch (*str)
  92         {
  93         case '4':
  94           ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4;
  95           break;
  96         case '5':
  97           ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5;
  98           if (str[1] == '+')
  99             {
 100               ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS;
 101               ++str;
 102             }
 103           break;
 104         case '6':
 105           ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6;
 106           if (str[1] == 'x')
 107             {
 108               ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X;
 109               ++str;
 110             }
 111           break;
 112         case '7':
 113           ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7;
 114           break;
 115         case '8':
 116           ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER8;
 117           break;
 118         default:
 119           return -1;
 120         }
 121       if (str[1] == '\0')
 122        return ret;
 123     }
 124   else if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970],
 125                     3) == 0)
 126     {
 127       if (strcmp (str + 3, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970]
 128                            + 3) == 0)
 129         return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;
 130       else if (strcmp (str + 3,
 131                        GLRO(dl_powerpc_platforms)[PPC_PLATFORM_CELL_BE] + 3)
 132                == 0)
 133         return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;
 134       else if (strcmp (str + 3,
 135                        GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPCA2] + 3)
 136                == 0)
 137         return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPCA2;
 138       else if (strcmp (str + 3,
 139                        GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC405] + 3)
 140                == 0)
 141         return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405;
 142       else if (strcmp (str + 3,
 143                        GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC440] + 3)
 144                == 0)
 145         return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440;
 146       else if (strcmp (str + 3,
 147                        GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC464] + 3)
 148                == 0)
 149         return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464;
 150       else if (strcmp (str + 3,
 151                        GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC476] + 3)
 152                == 0)
 153         return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476;
 154     }
 155
 156   return -1;
 157 }
 158
 159 #ifdef IS_IN_rtld
 160 static inline int
 161 __attribute__ ((unused))
 162 _dl_procinfo (unsigned int type, unsigned long int word)
 163 {
 164   /* Handle in a more sophisticated manner if HWCAP2 is supported.  */
 165   if (type == AT_HWCAP2)
 166     return 0;
 167
 168   _dl_printf ("AT_HWCAP:       ");
 169
 170   for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
 171     if (word & (1 << i))
 172       _dl_printf (" %s", _dl_hwcap_string (i));
 173
 174   _dl_printf ("\n");
 175
 176   return 0;
 177 }
 178 #endif
 179
 180 #endif /* dl-procinfo.h */