libebl/eblauxvinfo.c

   1 /* Describe known auxv types.
   2    Copyright (C) 2007, 2008, 2009 Red Hat, Inc.
   3    This file is part of elfutils.
   4
   5    This file is free software; you can redistribute it and/or modify
   6    it under the terms of either
   7
   8      * the GNU Lesser General Public License as published by the Free
   9        Software Foundation; either version 3 of the License, or (at
  10        your option) any later version
  11
  12    or
  13
  14      * the GNU General Public License as published by the Free
  15        Software Foundation; either version 2 of the License, or (at
  16        your option) any later version
  17
  18    or both in parallel, as here.
  19
  20    elfutils is distributed in the hope that it will be useful, but
  21    WITHOUT ANY WARRANTY; without even the implied warranty of
  22    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  23    General Public License for more details.
  24
  25    You should have received copies of the GNU General Public License and
  26    the GNU Lesser General Public License along with this program.  If
  27    not, see <http://www.gnu.org/licenses/>.  */
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include <config.h>
  31 #endif
  32
  33 #include <assert.h>
  34 #include <byteswap.h>
  35 #include <endian.h>
  36 #include <inttypes.h>
  37 #include <stdio.h>
  38 #include <stddef.h>
  39 #include <libeblP.h>
  40
  41 #define AUXV_TYPES                                                            \
  42   TYPE (NULL, "")                                                             \
  43   TYPE (IGNORE, "")                                                           \
  44   TYPE (EXECFD, "d")                                                          \
  45   TYPE (EXECFN, "s")                                                          \
  46   TYPE (PHDR, "p")                                                            \
  47   TYPE (PHENT, "u")                                                           \
  48   TYPE (PHNUM, "u")                                                           \
  49   TYPE (PAGESZ, "u")                                                          \
  50   TYPE (BASE, "p")                                                            \
  51   TYPE (FLAGS, "x")                                                           \
  52   TYPE (ENTRY, "p")                                                           \
  53   TYPE (NOTELF, "")                                                           \
  54   TYPE (UID, "u")                                                             \
  55   TYPE (EUID, "u")                                                            \
  56   TYPE (GID, "u")                                                             \
  57   TYPE (EGID, "u")                                                            \
  58   TYPE (CLKTCK, "u")                                                          \
  59   TYPE (PLATFORM, "s")                                                        \
  60   TYPE (BASE_PLATFORM, "s")                                                   \
  61   TYPE (HWCAP, "x")                                                           \
  62   TYPE (FPUCW, "x")                                                           \
  63   TYPE (DCACHEBSIZE, "d")                                                     \
  64   TYPE (ICACHEBSIZE, "d")                                                     \
  65   TYPE (UCACHEBSIZE, "d")                                                     \
  66   TYPE (IGNOREPPC, "")                                                        \
  67   TYPE (SECURE, "u")                                                          \
  68   TYPE (SYSINFO, "p")                                                         \
  69   TYPE (SYSINFO_EHDR, "p")                                                    \
  70   TYPE (L1I_CACHESHAPE, "d")                                                  \
  71   TYPE (L1D_CACHESHAPE, "d")                                                  \
  72   TYPE (L2_CACHESHAPE, "d")                                                   \
  73   TYPE (L3_CACHESHAPE, "d")                                                   \
  74   TYPE (RANDOM, "p")
  75
  76 static const struct
  77 {
  78   const char *name, *format;
  79 } auxv_types[] =
  80   {
  81 #define TYPE(name, fmt) [AT_##name] = { #name, fmt },
  82     AUXV_TYPES
  83 #undef  TYPE
  84   };
  85 #define nauxv_types (sizeof auxv_types / sizeof auxv_types[0])
  86
  87 int
  88 ebl_auxv_info (Ebl *ebl, GElf_Xword a_type, const char **name,
  89                const char **format)
  90 {
  91   int result = ebl->auxv_info (a_type, name, format);
  92   if (result == 0 && a_type < nauxv_types && auxv_types[a_type].name != NULL)
  93     {
  94       /* The machine specific function did not know this type.  */
  95       *name = auxv_types[a_type].name;
  96       *format = auxv_types[a_type].format;
  97       result = 1;
  98     }
  99   return result;
 100 }