sysdeps/unix/sysv/linux/i386/dl-procinfo.h

   1 /* Linux/i386 version of processor capability information handling macros.
   2    Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef _DL_PROCINFO_H
  22 #define _DL_PROCINFO_H  1
  23
  24 /* If anything should be added here check whether the size of each string
  25    is still ok with the given array size.  */
  26 static const char x86_cap_flags[][7] =
  27   {
  28     "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
  29     "cx8", "apic", "10", "sep", "mtrr", "pge", "mca", "cmov",
  30     "pat", "pse36", "psn", "19", "20", "21", "22", "mmx",
  31     "osfxsr", "xmm", "26", "27", "28", "29", "30", "amd3d"
  32   };
  33 #define _DL_HWCAP_COUNT 32
  34
  35 static inline int
  36 __attribute__ ((unused))
  37 _dl_procinfo (int word)
  38 {
  39   /* This table should match the information from arch/i386/kernel/setup.c
  40      in the kernel sources.  */
  41   int i;
  42
  43   _dl_sysdep_message ("AT_HWCAP:   ", NULL);
  44
  45   for (i = 0; i < _DL_HWCAP_COUNT; ++i)
  46     if (word & (1 << i))
  47       _dl_sysdep_message (" ", x86_cap_flags[i], NULL);
  48
  49   _dl_sysdep_message ("\n", NULL);
  50
  51   return 0;
  52 }
  53
  54 static inline const char *
  55 __attribute__ ((unused))
  56 _dl_hwcap_string (int idx)
  57 {
  58   return x86_cap_flags[idx];
  59 };
  60
  61 enum
  62 {
  63   HWCAP_I386_FPU   = 1 << 0,
  64   HWCAP_I386_VME   = 1 << 1,
  65   HWCAP_I386_DE    = 1 << 2,
  66   HWCAP_I386_PSE   = 1 << 3,
  67   HWCAP_I386_TSC   = 1 << 4,
  68   HWCAP_I386_MSR   = 1 << 5,
  69   HWCAP_I386_PAE   = 1 << 6,
  70   HWCAP_I386_MCE   = 1 << 7,
  71   HWCAP_I386_CX8   = 1 << 8,
  72   HWCAP_I386_APIC  = 1 << 9,
  73   HWCAP_I386_SEP   = 1 << 11,
  74   HWCAP_I386_MTRR  = 1 << 12,
  75   HWCAP_I386_PGE   = 1 << 13,
  76   HWCAP_I386_MCA   = 1 << 14,
  77   HWCAP_I386_CMOV  = 1 << 15,
  78   HWCAP_I386_FCMOV = 1 << 16,
  79   HWCAP_I386_MMX   = 1 << 23,
  80   HWCAP_I386_OSFXSR = 1 << 24,
  81   HWCAP_I386_AMD3D = 1 << 31,
  82
  83   /* XXX Which others to add here?  */
  84   HWCAP_IMPORTANT = (HWCAP_I386_MMX)
  85 };
  86
  87 static inline int
  88 __attribute__ ((unused))
  89 _dl_string_hwcap (const char *str)
  90 {
  91   int i;
  92
  93   for (i = 0; i < _DL_HWCAP_COUNT; i++)
  94     {
  95       if (strcmp (str, x86_cap_flags[i]) == 0)
  96         return i;
  97     }
  98   return -1;
  99 };
 100
 101 #endif /* dl-procinfo.h */