sysdeps/powerpc/dl-procinfo.h

   1 /* Processor capability information handling macros.  PowerPC version.
   2    Copyright (C) 2005 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _DL_PROCINFO_H
  21 #define _DL_PROCINFO_H  1
  22
  23 #include <ldsodefs.h>
  24 #include <sysdep.h>             /* This defines the PPC_FEATURE_* macros.  */
  25
  26 /* There are 16 bits used, but they are bits 16..31.  */
  27 #define _DL_HWCAP_FIRST         16
  28 #define _DL_HWCAP_COUNT         32
  29
  30 /* These bits influence library search.  */
  31 #define HWCAP_IMPORTANT         (PPC_FEATURE_HAS_ALTIVEC                      \
  32                                  | PPC_FEATURE_POWER4                         \
  33                                  | PPC_FEATURE_POWER5                         \
  34                                  | PPC_FEATURE_POWER5_PLUS                    \
  35                                  | PPC_FEATURE_CELL)
  36
  37 /* We don't use AT_PLATFORM.  */
  38 #define _DL_HWCAP_PLATFORM      0
  39 #define _dl_string_platform(str) (-1)
  40
  41 static inline const char *
  42 __attribute__ ((unused))
  43 _dl_hwcap_string (int idx)
  44 {
  45   return GLRO(dl_powerpc_cap_flags)[idx - _DL_HWCAP_FIRST];
  46 };
  47
  48 static inline int
  49 __attribute__ ((unused))
  50 _dl_string_hwcap (const char *str)
  51 {
  52   for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
  53     if (strcmp (str, _dl_hwcap_string (i)) == 0)
  54       return i;
  55   return -1;
  56 };
  57
  58 #ifdef IS_IN_rtld
  59 static inline int
  60 __attribute__ ((unused))
  61 _dl_procinfo (int word)
  62 {
  63   _dl_printf ("AT_HWCAP:       ");
  64
  65   for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
  66     if (word & (1 << i))
  67       _dl_printf (" %s", _dl_hwcap_string (i));
  68
  69   _dl_printf ("\n");
  70
  71   return 0;
  72 }
  73 #endif
  74
  75 #endif /* dl-procinfo.h */