sysdeps/s390/dl-procinfo.h

   1 /* s390 version of processor capability information handling macros.
   2    Copyright (C) 2006 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 7
  26
  27 #define _DL_PLATFORMS_COUNT     4
  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 };
  49
  50 #define HWCAP_IMPORTANT (HWCAP_S390_ZARCH | HWCAP_S390_LDISP \
  51                           | HWCAP_S390_EIMM | HWCAP_S390_DFP)
  52
  53 /* We cannot provide a general printing function.  */
  54 #define _dl_procinfo(word) -1
  55
  56 static inline const char *
  57 __attribute__ ((unused))
  58 _dl_hwcap_string (int idx)
  59 {
  60   return GLRO(dl_s390_cap_flags)[idx];
  61 };
  62
  63 static inline const char *
  64 __attribute__ ((unused))
  65 _dl_platform_string (int idx)
  66 {
  67   return GLRO(dl_s390_platforms)[idx - _DL_FIRST_PLATFORM];
  68 };
  69
  70 static inline int
  71 __attribute__ ((unused, always_inline))
  72 _dl_string_hwcap (const char *str)
  73 {
  74   int i;
  75
  76   for (i = 0; i < _DL_HWCAP_COUNT; i++)
  77     {
  78       if (strcmp (str, GLRO(dl_s390_cap_flags)[i]) == 0)
  79         return i;
  80     }
  81   return -1;
  82 };
  83
  84 static inline int
  85 __attribute__ ((unused, always_inline))
  86 _dl_string_platform (const char *str)
  87 {
  88   int i;
  89
  90   if (str != NULL)
  91     for (i = 0; i < _DL_PLATFORMS_COUNT; ++i)
  92       {
  93         if (strcmp (str, GLRO(dl_s390_platforms)[i]) == 0)
  94           return _DL_FIRST_PLATFORM + i;
  95       }
  96   return -1;
  97 };
  98
  99 #endif /* dl-procinfo.h */