sysdeps/unix/sysv/linux/arm/ldsodefs.h

   1 /* Run-time dynamic linker data structures for loaded ELF shared objects.
   2    Copyright (C) 2010-2014 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _ARM_LINUX_LDSODEFS_H
  20 #define _ARM_LINUX_LDSODEFS_H 1
  21
  22 #include_next <ldsodefs.h>
  23
  24 #undef VALID_ELF_HEADER
  25 #undef VALID_ELF_OSABI
  26 #undef MORE_ELF_HEADER_DATA
  27
  28 #define EXTRA_OSABI ELFOSABI_ARM_AEABI
  29
  30 #ifdef __ARM_PCS_VFP
  31 # define VALID_FLOAT_ABI(x) \
  32   ((EF_ARM_EABI_VERSION ((x)) != EF_ARM_EABI_VER5)      \
  33    || !((x) & EF_ARM_ABI_FLOAT_SOFT))
  34 #else
  35 # define VALID_FLOAT_ABI(x) \
  36   ((EF_ARM_EABI_VERSION ((x)) != EF_ARM_EABI_VER5)      \
  37    || !((x) & EF_ARM_ABI_FLOAT_HARD))
  38 #endif
  39
  40 #undef VALID_ELF_HEADER
  41 #define VALID_ELF_HEADER(hdr,exp,size)          \
  42   ((memcmp (hdr, exp, size) == 0                \
  43     || memcmp (hdr, expected2, size) == 0       \
  44     || memcmp (hdr, expected3, size) == 0)      \
  45    && VALID_FLOAT_ABI (ehdr->e_flags))
  46 #define VALID_ELF_OSABI(osabi)          (osabi == ELFOSABI_SYSV         \
  47                                          || osabi == ELFOSABI_GNU       \
  48                                          || osabi == EXTRA_OSABI)
  49 #define MORE_ELF_HEADER_DATA                            \
  50   static const unsigned char expected2[EI_PAD] =        \
  51   {                                                     \
  52     [EI_MAG0] = ELFMAG0,                                \
  53     [EI_MAG1] = ELFMAG1,                                \
  54     [EI_MAG2] = ELFMAG2,                                \
  55     [EI_MAG3] = ELFMAG3,                                \
  56     [EI_CLASS] = ELFW(CLASS),                           \
  57     [EI_DATA] = byteorder,                              \
  58     [EI_VERSION] = EV_CURRENT,                          \
  59     [EI_OSABI] = ELFOSABI_GNU                           \
  60   };                                                    \
  61   static const unsigned char expected3[EI_PAD] =        \
  62   {                                                     \
  63     [EI_MAG0] = ELFMAG0,                                \
  64     [EI_MAG1] = ELFMAG1,                                \
  65     [EI_MAG2] = ELFMAG2,                                \
  66     [EI_MAG3] = ELFMAG3,                                \
  67     [EI_CLASS] = ELFW(CLASS),                           \
  68     [EI_DATA] = byteorder,                              \
  69     [EI_VERSION] = EV_CURRENT,                          \
  70     [EI_OSABI] = EXTRA_OSABI                            \
  71   }
  72
  73 #endif