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