sysdeps/s390/dl-procinfo.h

   1 /* s390 version of processor capability information handling macros.
   2    Copyright (C) 2006-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _DL_PROCINFO_H
  20 #define _DL_PROCINFO_H  1
  21 #include <ldsodefs.h>
  22
  23 #define _DL_HWCAP_COUNT 23
  24 extern const char _dl_s390_cap_flags[_DL_HWCAP_COUNT][9] attribute_hidden;
  25
  26 #define _DL_PLATFORMS_COUNT     11
  27 extern const char _dl_s390_platforms[_DL_PLATFORMS_COUNT][7] attribute_hidden;
  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 capability bit numbers are derived directly from the
  36    facility indications as stored by the "store facility list" (STFL)
  37    instruction.
  38    highgprs is an alien in that list.  It describes a *kernel*
  39    capability.  */
  40
  41 enum
  42 {
  43   HWCAP_S390_ESAN3 = 1 << 0,
  44   HWCAP_S390_ZARCH = 1 << 1,
  45   HWCAP_S390_STFLE = 1 << 2,
  46   HWCAP_S390_MSA = 1 << 3,
  47   HWCAP_S390_LDISP = 1 << 4,
  48   HWCAP_S390_EIMM = 1 << 5,
  49   HWCAP_S390_DFP = 1 << 6,
  50   HWCAP_S390_HPAGE = 1 << 7,
  51   HWCAP_S390_ETF3EH = 1 << 8,
  52   HWCAP_S390_HIGH_GPRS = 1 << 9,
  53   HWCAP_S390_TE = 1 << 10,
  54   HWCAP_S390_VX = 1 << 11,
  55   HWCAP_S390_VXRS = HWCAP_S390_VX,
  56   HWCAP_S390_VXD = 1 << 12,
  57   HWCAP_S390_VXRS_BCD = HWCAP_S390_VXD,
  58   HWCAP_S390_VXE = 1 << 13,
  59   HWCAP_S390_VXRS_EXT = HWCAP_S390_VXE,
  60   HWCAP_S390_GS = 1 << 14,
  61   HWCAP_S390_VXRS_EXT2 = 1 << 15,
  62   HWCAP_S390_VXRS_PDE = 1 << 16,
  63   HWCAP_S390_SORT = 1 << 17,
  64   HWCAP_S390_DFLT = 1 << 18,
  65   HWCAP_S390_VXRS_PDE2 = 1 << 19,
  66   HWCAP_S390_NNPA = 1 << 20,
  67   HWCAP_S390_PCI_MIO = 1 << 21,
  68   HWCAP_S390_SIE = 1 << 22,
  69 };
  70
  71 #define HWCAP_IMPORTANT (HWCAP_S390_ZARCH | HWCAP_S390_LDISP \
  72                          | HWCAP_S390_EIMM | HWCAP_S390_DFP  \
  73                          | HWCAP_S390_VX | HWCAP_S390_VXE    \
  74                          | HWCAP_S390_VXRS_EXT2)
  75
  76 /* We cannot provide a general printing function.  */
  77 #define _dl_procinfo(type, word) -1
  78
  79 static inline const char *
  80 __attribute__ ((unused))
  81 _dl_hwcap_string (int idx)
  82 {
  83   return _dl_s390_cap_flags[idx];
  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, _dl_s390_platforms[i]) == 0)
  96           return _DL_FIRST_PLATFORM + i;
  97       }
  98   return -1;
  99 };
 100
 101 #endif /* dl-procinfo.h */