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1fcccbac89
elf_core_dump() and elf_fdpic_core_dump() use #ifdef and the corresponding macro for hiding _multiline_ logics in functions. This patch removes #ifdef and replaces ELF_CORE_EXTRA_* by corresponding functions. For architectures not implemeonting ELF_CORE_EXTRA_*, we use weak functions in order to reduce a range of modification. This cleanup is for my next patches, but I think this cleanup itself is worth doing regardless of my firnal purpose. Signed-off-by: Daisuke HATAYAMA <d.hatayama@jp.fujitsu.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: David Howells <dhowells@redhat.com> Cc: Greg Ungerer <gerg@snapgear.com> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <andi@firstfloor.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
133 lines
3.5 KiB
C
133 lines
3.5 KiB
C
/*
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* 32-bit compatibility support for ELF format executables and core dumps.
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*
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* Copyright (C) 2007 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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*
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* Red Hat Author: Roland McGrath.
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*
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* This file is used in a 64-bit kernel that wants to support 32-bit ELF.
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* asm/elf.h is responsible for defining the compat_* and COMPAT_* macros
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* used below, with definitions appropriate for 32-bit ABI compatibility.
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*
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* We use macros to rename the ABI types and machine-dependent
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* functions used in binfmt_elf.c to compat versions.
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*/
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#include <linux/elfcore-compat.h>
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#include <linux/time.h>
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/*
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* Rename the basic ELF layout types to refer to the 32-bit class of files.
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*/
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#undef ELF_CLASS
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#define ELF_CLASS ELFCLASS32
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#undef elfhdr
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#undef elf_phdr
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#undef elf_shdr
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#undef elf_note
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#undef elf_addr_t
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#define elfhdr elf32_hdr
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#define elf_phdr elf32_phdr
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#define elf_shdr elf32_shdr
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#define elf_note elf32_note
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#define elf_addr_t Elf32_Addr
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/*
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* The machine-dependent core note format types are defined in elfcore-compat.h,
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* which requires asm/elf.h to define compat_elf_gregset_t et al.
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*/
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#define elf_prstatus compat_elf_prstatus
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#define elf_prpsinfo compat_elf_prpsinfo
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/*
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* Compat version of cputime_to_compat_timeval, perhaps this
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* should be an inline in <linux/compat.h>.
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*/
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static void cputime_to_compat_timeval(const cputime_t cputime,
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struct compat_timeval *value)
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{
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struct timeval tv;
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cputime_to_timeval(cputime, &tv);
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value->tv_sec = tv.tv_sec;
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value->tv_usec = tv.tv_usec;
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}
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#undef cputime_to_timeval
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#define cputime_to_timeval cputime_to_compat_timeval
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/*
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* To use this file, asm/elf.h must define compat_elf_check_arch.
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* The other following macros can be defined if the compat versions
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* differ from the native ones, or omitted when they match.
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*/
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#undef ELF_ARCH
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#undef elf_check_arch
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#define elf_check_arch compat_elf_check_arch
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#ifdef COMPAT_ELF_PLATFORM
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#undef ELF_PLATFORM
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#define ELF_PLATFORM COMPAT_ELF_PLATFORM
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#endif
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#ifdef COMPAT_ELF_HWCAP
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#undef ELF_HWCAP
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#define ELF_HWCAP COMPAT_ELF_HWCAP
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#endif
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#ifdef COMPAT_ARCH_DLINFO
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#undef ARCH_DLINFO
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#define ARCH_DLINFO COMPAT_ARCH_DLINFO
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#endif
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#ifdef COMPAT_ELF_ET_DYN_BASE
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#undef ELF_ET_DYN_BASE
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#define ELF_ET_DYN_BASE COMPAT_ELF_ET_DYN_BASE
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#endif
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#ifdef COMPAT_ELF_EXEC_PAGESIZE
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#undef ELF_EXEC_PAGESIZE
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#define ELF_EXEC_PAGESIZE COMPAT_ELF_EXEC_PAGESIZE
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#endif
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#ifdef COMPAT_ELF_PLAT_INIT
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#undef ELF_PLAT_INIT
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#define ELF_PLAT_INIT COMPAT_ELF_PLAT_INIT
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#endif
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#ifdef COMPAT_SET_PERSONALITY
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#undef SET_PERSONALITY
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#define SET_PERSONALITY COMPAT_SET_PERSONALITY
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#endif
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#ifdef compat_start_thread
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#undef start_thread
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#define start_thread compat_start_thread
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#endif
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#ifdef compat_arch_setup_additional_pages
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#undef ARCH_HAS_SETUP_ADDITIONAL_PAGES
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#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
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#undef arch_setup_additional_pages
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#define arch_setup_additional_pages compat_arch_setup_additional_pages
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#endif
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/*
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* Rename a few of the symbols that binfmt_elf.c will define.
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* These are all local so the names don't really matter, but it
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* might make some debugging less confusing not to duplicate them.
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*/
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#define elf_format compat_elf_format
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#define init_elf_binfmt init_compat_elf_binfmt
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#define exit_elf_binfmt exit_compat_elf_binfmt
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/*
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* We share all the actual code with the native (64-bit) version.
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*/
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#include "binfmt_elf.c"
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