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2001-03-12 Jakub Jelinek <jakub@redhat.com> * csu/Makefile (abi-tag.h): Define OS and version separately, allow version to be overriden from config.h. * csu/abi-note.S: Use OS and version separately, include config.h. * elf/dl-load.c (_dl_osversion): New. (_dl_map_object_from_fd): Kill some warnings. (open_verify): Check .note.ABI-tag of the library if present. * elf/Makefile (CPPFLAGS-dl-load.c): Add -I$(csu-objpfx). * elf/cache.c (struct cache_entry): Add osversion. (print_entry): Print osversion. (print_cache): Pass osversion to it. (compare): Sort according to osversion. (save_cache): Set osversion. (add_to_cache): Add osversion argument. * sysdeps/generic/ldconfig.h (add_to_cache, process_file, process_elf_file): Add osversion argument. * elf/readlib.c (process_file): Likewise. * sysdeps/generic/readelflib.c (process_elf_file): Likewise. * sysdeps/unix/sysv/linux/ia64/readelflib.c (process_elf_file, process_elf32_file, process_elf64_file): Likewise. * sysdeps/unix/sysv/linux/i386/readelflib.c (process_elf_file, process_elf32_file, process_elf64_file): Likewise. * sysdeps/unix/sysv/linux/sparc/readelflib.c (process_elf_file, process_elf32_file, process_elf64_file): Likewise. * elf/ldconfig.c (manual_link): Pass it. (search_dir): Issue diagnostic if two libs with the same soname in the same directory have different .note.ABI-tag. Record osversion in dlib_entry and use it from there. (struct lib_entry): Remove. (struct dlib_entry): Add osversion. * sysdeps/generic/dl-cache.c (_dl_load_cache_lookup): Check osversion. * sysdeps/generic/dl-cache.h (struct file_entry_new): Replace __unused field with osversion. * sysdeps/generic/ldsodefs.h (_dl_osversion): Declare. * sysdeps/unix/sysv/linux/init-first.c: Include ldsodefs.h. * sysdeps/unix/sysv/linux/dl-osinfo.h (DL_SYSDEP_OSCHECK): Save kernel version in _dl_osversion. * sysdeps/unix/sysv/linux/configure.in: Define __ABI_TAG_VERSION. * Makerules (build-shlib-helper, build-module-helper): New. (build-shlib, build-module-helper): Make sure .note.ABI-tag comes early. * config.h.in (__ABI_TAG_VERSION): Add. * elf/dl-minimal.c (__strtoul_internal): Set endptr on return. * sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS): Handle LD_ASSUME_KERNEL. * sysdeps/unix/sysv/linux/dl-librecon.h: New.
74 lines
3.1 KiB
ArmAsm
74 lines
3.1 KiB
ArmAsm
/* Special .init and .fini section support.
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Copyright (C) 1997, 2001 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
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and/or modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Library General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The Library General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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The GNU C Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Define an ELF note identifying the operating-system ABI that the
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executable was created for. The ELF note information identifies a
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particular OS or coordinated development effort within which the
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ELF header's e_machine value plus (for dynamically linked programs)
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the PT_INTERP dynamic linker name and DT_NEEDED shared library
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names fully identify the runtime environment required by an
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executable.
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The general format of ELF notes is as follows.
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Offsets and lengths are bytes or (parenthetical references) to the
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values in other fields.
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offset length contents
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0 4 length of name
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4 4 length of data
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8 4 note type
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12 (0) vendor name
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- null-terminated ASCII string, padded to 4-byte alignment
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12+(0) (4) note data,
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The GNU project and cooperating development efforts (including the
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Linux community) use note type 1 and a vendor name string of "GNU"
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for a note descriptor that indicates ABI requirements. The note data
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is four 32-bit words. The first of these is an operating system
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number (0=Linux, 1=Hurd, 2=Solaris, ...) and the remaining three
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identify the earliest release of that OS that supports this ABI.
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See abi-tags (top level) for details. */
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#include <config.h>
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#include <abi-tag.h> /* OS-specific ABI tag value */
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/* The linker (GNU ld 2.8 and later) recognizes an allocated section whose
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name begins with `.note' and creates a PT_NOTE program header entry
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pointing at it. */
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.section ".note.ABI-tag", "a"
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.align 4
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.long 1f - 0f /* name length */
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.long 3f - 2f /* data length */
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.long 1 /* note type */
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0: .asciz "GNU" /* vendor name */
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1: .align 4
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2: .long __ABI_TAG_OS /* note data: the ABI tag */
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.long __ABI_TAG_VERSION
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3: .align 4 /* pad out section */
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