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

   1 /* Linux/i386 version of processor capability information handling macros.
   2    Copyright (C) 1998, 1999, 2000, 2001 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 Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the 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    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _DL_PROCINFO_H
  22 #define _DL_PROCINFO_H  1
  23
  24 #include <ldsodefs.h>
  25
  26 /* If anything should be added here check whether the size of each string
  27    is still ok with the given array size.  */
  28 extern const char _dl_x86_cap_flags[][7];
  29 #define _DL_HWCAP_COUNT 32
  30
  31 extern const char _dl_x86_platforms[][5];
  32 #define _DL_PLATFORMS_COUNT     4
  33
  34 /* Start at 48 to reserve some space.  */
  35 #define _DL_FIRST_PLATFORM      48
  36 /* Mask to filter out platforms.  */
  37 #define _DL_HWCAP_PLATFORM      (7ULL << _DL_FIRST_PLATFORM)
  38
  39
  40 static inline int
  41 __attribute__ ((unused))
  42 _dl_procinfo (int word)
  43 {
  44   /* This table should match the information from arch/i386/kernel/setup.c
  45      in the kernel sources.  */
  46   int i;
  47
  48   _dl_printf ("AT_HWCAP:   ");
  49
  50   for (i = 0; i < _DL_HWCAP_COUNT; ++i)
  51     if (word & (1 << i))
  52       _dl_printf (" %s", _dl_x86_cap_flags[i]);
  53
  54   _dl_printf ("\n");
  55
  56   return 0;
  57 }
  58
  59 static inline const char *
  60 __attribute__ ((unused))
  61 _dl_hwcap_string (int idx)
  62 {
  63   return _dl_x86_cap_flags[idx];
  64 };
  65
  66 static inline const char *
  67 __attribute__ ((unused))
  68 _dl_platform_string (int idx)
  69 {
  70   return _dl_x86_platforms [idx - _DL_FIRST_PLATFORM];
  71 };
  72
  73 enum
  74 {
  75   HWCAP_I386_FPU   = 1 << 0,
  76   HWCAP_I386_VME   = 1 << 1,
  77   HWCAP_I386_DE    = 1 << 2,
  78   HWCAP_I386_PSE   = 1 << 3,
  79   HWCAP_I386_TSC   = 1 << 4,
  80   HWCAP_I386_MSR   = 1 << 5,
  81   HWCAP_I386_PAE   = 1 << 6,
  82   HWCAP_I386_MCE   = 1 << 7,
  83   HWCAP_I386_CX8   = 1 << 8,
  84   HWCAP_I386_APIC  = 1 << 9,
  85   HWCAP_I386_SEP   = 1 << 11,
  86   HWCAP_I386_MTRR  = 1 << 12,
  87   HWCAP_I386_PGE   = 1 << 13,
  88   HWCAP_I386_MCA   = 1 << 14,
  89   HWCAP_I386_CMOV  = 1 << 15,
  90   HWCAP_I386_FCMOV = 1 << 16,
  91   HWCAP_I386_MMX   = 1 << 23,
  92   HWCAP_I386_OSFXSR = 1 << 24,
  93   HWCAP_I386_XMM   = 1 << 25,
  94   HWCAP_I386_XMM2  = 1 << 26,
  95   HWCAP_I386_AMD3D = 1 << 31,
  96
  97   /* XXX Which others to add here?  */
  98   HWCAP_IMPORTANT = (HWCAP_I386_MMX)
  99
 100 };
 101
 102 static inline int
 103 __attribute__ ((unused))
 104 _dl_string_hwcap (const char *str)
 105 {
 106   int i;
 107
 108   for (i = 0; i < _DL_HWCAP_COUNT; i++)
 109     {
 110       if (strcmp (str, _dl_x86_cap_flags[i]) == 0)
 111         return i;
 112     }
 113   return -1;
 114 };
 115
 116
 117 static inline int
 118 __attribute__ ((unused))
 119 _dl_string_platform (const char *str)
 120 {
 121   int i;
 122
 123   if (str != NULL)
 124     for (i = 0; i < _DL_PLATFORMS_COUNT; ++i)
 125       {
 126         if (strcmp (str, _dl_x86_platforms[i]) == 0)
 127           return _DL_FIRST_PLATFORM + i;
 128       }
 129   return -1;
 130 };
 131
 132 #endif /* dl-procinfo.h */