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