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glibc/sysdeps/unix/sysv/linux/ldsodefs.h
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/* Run-time dynamic linker data structures for loaded ELF shared objects. | |
Copyright (C) 2001, 2002, 2003, 2006, 2009, 2010 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, write to the Free | |
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
02111-1307 USA. */ | |
#ifndef _LDSODEFS_H | |
#include <libc-abis.h> | |
#include <kernel-features.h> | |
/* Get the real definitions. */ | |
#include_next <ldsodefs.h> | |
/* Now define our stuff. */ | |
/* We have the auxiliary vector. */ | |
#define HAVE_AUX_VECTOR | |
/* Used by static binaries to check the auxiliary vector. */ | |
extern void _dl_aux_init (ElfW(auxv_t) *av) internal_function; | |
/* Initialization which is normally done by the dynamic linker. */ | |
extern void _dl_non_dynamic_init (void) internal_function; | |
/* We can assume that the kernel always provides the AT_UID, AT_EUID, | |
AT_GID, and AT_EGID values in the auxiliary vector from 2.4.0 or so on. */ | |
#if __ASSUME_AT_XID | |
# define HAVE_AUX_XID | |
#endif | |
/* We can assume that the kernel always provides the AT_SECURE value | |
in the auxiliary vector from 2.5.74 or so on. */ | |
#if __ASSUME_AT_SECURE | |
# define HAVE_AUX_SECURE | |
#endif | |
/* Starting with one of the 2.4.0 pre-releases the Linux kernel passes | |
up the page size information. */ | |
#if __ASSUME_AT_PAGESIZE | |
# define HAVE_AUX_PAGESIZE | |
#endif | |
/* Accept binaries which identify the binary as using Linux extensions. */ | |
#define VALID_ELF_HEADER(hdr,exp,size) (memcmp (hdr, exp, size) == 0 \ | |
|| memcmp (hdr, expected2, size) == 0) | |
#define VALID_ELF_OSABI(osabi) (osabi == ELFOSABI_SYSV \ | |
|| osabi == ELFOSABI_LINUX) | |
#define VALID_ELF_ABIVERSION(osabi,ver) \ | |
(ver == 0 || (osabi == ELFOSABI_LINUX && ver < LIBC_ABI_MAX)) | |
#define MORE_ELF_HEADER_DATA \ | |
static const unsigned char expected2[EI_PAD] = \ | |
{ \ | |
[EI_MAG0] = ELFMAG0, \ | |
[EI_MAG1] = ELFMAG1, \ | |
[EI_MAG2] = ELFMAG2, \ | |
[EI_MAG3] = ELFMAG3, \ | |
[EI_CLASS] = ELFW(CLASS), \ | |
[EI_DATA] = byteorder, \ | |
[EI_VERSION] = EV_CURRENT, \ | |
[EI_OSABI] = ELFOSABI_LINUX \ | |
} | |
#endif /* ldsodefs.h */ |