sysdeps/s390/dl-procinfo.h

   1 /* s390 version of processor capability information handling macros.
   2    Copyright (C) 2006, 2009 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2006.
   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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _DL_PROCINFO_H
  21 #define _DL_PROCINFO_H  1
  22 #include <ldsodefs.h>
  23
  24 #define _DL_HWCAP_COUNT 10
  25
  26 #define _DL_PLATFORMS_COUNT     5
  27
  28 /* The kernel provides up to 32 capability bits with elf_hwcap.  */
  29 #define _DL_FIRST_PLATFORM      32
  30 /* Mask to filter out platforms.  */
  31 #define _DL_HWCAP_PLATFORM      (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
  32                                  << _DL_FIRST_PLATFORM)
  33
  34 /* Hardware capablity bit numbers are derived directly from the
  35    facility indications as stored by the "store facility list" (STFL)
  36    instruction.  */
  37
  38 enum
  39 {
  40   HWCAP_S390_ESAN3 = 1 << 0,
  41   HWCAP_S390_ZARCH = 1 << 1,
  42   HWCAP_S390_STFLE = 1 << 2,
  43   HWCAP_S390_MSA = 1 << 3,
  44   HWCAP_S390_LDISP = 1 << 4,
  45   HWCAP_S390_EIMM = 1 << 5,
  46   HWCAP_S390_DFP = 1 << 6,
  47   HWCAP_S390_HPAGE = 1 << 7,
  48   HWCAP_S390_ETF3EH = 1 << 8,
  49   HWCAP_S390_HIGH_GPRS = 1 << 9,
  50 };
  51
  52 #define HWCAP_IMPORTANT (HWCAP_S390_ZARCH | HWCAP_S390_LDISP \
  53                           | HWCAP_S390_EIMM | HWCAP_S390_DFP)
  54
  55 /* We cannot provide a general printing function.  */
  56 #define _dl_procinfo(word) -1
  57
  58 static inline const char *
  59 __attribute__ ((unused))
  60 _dl_hwcap_string (int idx)
  61 {
  62   return GLRO(dl_s390_cap_flags)[idx];
  63 };
  64
  65 static inline const char *
  66 __attribute__ ((unused))
  67 _dl_platform_string (int idx)
  68 {
  69   return GLRO(dl_s390_platforms)[idx - _DL_FIRST_PLATFORM];
  70 };
  71
  72 static inline int
  73 __attribute__ ((unused, always_inline))
  74 _dl_string_hwcap (const char *str)
  75 {
  76   int i;
  77
  78   for (i = 0; i < _DL_HWCAP_COUNT; i++)
  79     {
  80       if (strcmp (str, GLRO(dl_s390_cap_flags)[i]) == 0)
  81         return i;
  82     }
  83   return -1;
  84 };
  85
  86 static inline int
  87 __attribute__ ((unused, always_inline))
  88 _dl_string_platform (const char *str)
  89 {
  90   int i;
  91
  92   if (str != NULL)
  93     for (i = 0; i < _DL_PLATFORMS_COUNT; ++i)
  94       {
  95         if (strcmp (str, GLRO(dl_s390_platforms)[i]) == 0)
  96           return _DL_FIRST_PLATFORM + i;
  97       }
  98   return -1;
  99 };
 100
 101 #endif /* dl-procinfo.h */