[linuxjm/LDP_man-pages.git] / draft / man5 / elf.5

.\"     $OpenBSD: elf.5,v 1.12 2003/10/27 20:23:58 jmc Exp $
.\"Copyright (c) 1999 Jeroen Ruigrok van der Werven
.\"All rights reserved.
.\"
.\"Redistribution and use in source and binary forms, with or without
.\"modification, are permitted provided that the following conditions
.\"are met:
.\"1. Redistributions of source code must retain the above copyright
.\"   notice, this list of conditions and the following disclaimer.
.\"2. Redistributions in binary form must reproduce the above copyright
.\"   notice, this list of conditions and the following disclaimer in the
.\"   documentation and/or other materials provided with the distribution.
.\"
.\"THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\"ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\"IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\"ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\"FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\"DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\"OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\"HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\"LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\"OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\"SUCH DAMAGE.
.\"
.\"     $FreeBSD: src/share/man/man5/elf.5,v 1.21 2001/10/01 16:09:23 ru Exp $
.\"
.\" Slightly adapted - aeb, 2004-01-01
.\" 2005-07-15, Mike Frysinger <vapier@gentoo.org>, various fixes
.\" 2007-10-11, Mike Frysinger <vapier@gentoo.org>, various fixes
.\" 2007-12-08, mtk, Converted from mdoc to man macros
.\"
.\" Japanese Version Copyright (c) 2004-2005 Yuichi SATO
.\"         all rights reserved.
.\" Translated Thu Dec 16 02:17:58 JST 2004
.\"         by Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated & Modified Sat Sep 10 02:29:40 JST 2005 by Yuichi SATO
.\" Updated 2008-02-12, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.77
.\"
.TH ELF 5 2007-12-28 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.\"O elf \- format of Executable and Linking Format (ELF) files
.SH ̾Á°
elf \- ¼Â¹Ô²Äǽ¥ê¥ó¥¯¥Õ¥©¡¼¥Þ¥Ã¥È (ELF) ¥Õ¥¡¥¤¥ë¤Î¥Õ¥©¡¼¥Þ¥Ã¥È
.\"O .SH SYNOPSIS
.SH ½ñ¼°
.nf
.\" .B #include <elf_abi.h>
.B #include <elf.h>
.fi
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O The header file
.\"O .I <elf.h>
.\"O defines the format of ELF executable binary files.
¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë
.I <elf.h>
¤Ï ELF ¼Â¹Ô²Äǽ¥Ð¥¤¥Ê¥ê¥Õ¥¡¥¤¥ë¤Î¥Õ¥©¡¼¥Þ¥Ã¥È¤òÄêµÁ¤¹¤ë¡£
.\"O Amongst these files are
.\"O normal executable files, relocatable object files, core files and shared
.\"O libraries.
¤³¤ì¤é¤Î¥Õ¥¡¥¤¥ë¤È¤·¤Æ¤Ï¡¢Ä̾ï¤Î¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¡¦
ºÆÇÛÃÖ²Äǽ¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¡¦¥³¥¢¥Õ¥¡¥¤¥ë¡¦¶¦Í­¥é¥¤¥Ö¥é¥ê¤¬¤¢¤ë¡£
.PP
.\"O An executable file using the ELF file format consists of an ELF header,
.\"O followed by a program header table or a section header table, or both.
ELF ¥Õ¥¡¥¤¥ë¥Õ¥©¡¼¥Þ¥Ã¥È¤ò»È¤¦¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¤Ï¡¢
ELF ¥Ø¥Ã¥À¤Î¸å¤Ë¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Þ¤¿¤Ï
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë (¤Þ¤¿¤Ï¤½¤ÎξÊý) ¤¬Â³¤¯¹½À®¤Ç¤¢¤ë¡£
.\"O The ELF header is always at offset zero of the file.
ELF ¥Ø¥Ã¥À¤Ï¾ï¤Ë¥Õ¥¡¥¤¥ë¤Î¥ª¥Õ¥»¥Ã¥È 0 ¤Ë¤¢¤ë¡£
.\"O The program header
.\"O table and the section header table's offset in the file are defined in the
.\"O ELF header.
¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤È¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î
¥Õ¥¡¥¤¥ëÆâ¤Ç¤Î¥ª¥Õ¥»¥Ã¥È¤Ï¡¢ELF ¥Ø¥Ã¥À¤ËÄêµÁ¤µ¤ì¤Æ¤¤¤ë¡£
.\"O The two tables describe the rest of the particularities of
.\"O the file.
¤³¤Î 2 ¤Ä¤Î¥Æ¡¼¥Ö¥ë¤Ï¥Õ¥¡¥¤¥ë¤Î»Ä¤ê¤ÎÉôʬ¤Î¾ÜºÙ¤òµ­½Ò¤¹¤ë¡£
.PP
.\"O .\" Applications which wish to process ELF binary files for their native
.\"O .\" architecture only should include
.\"O .\" .I <elf_abi.h>
.\"O .\" in their source code.
.\" ¥Í¥¤¥Æ¥£¥Ö¤Ê¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤Î ELF ¥Ð¥¤¥Ê¥ê¥Õ¥¡¥¤¥ë¤ò½èÍý¤·¤¿¤¤
.\" ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ï¡¢¥½¡¼¥¹¥³¡¼¥É¤Ë
.\" .I <elf_abi.h>
.\" ¤ò´Þ¤á¤ë¤À¤±¤Ç¤è¤¤¡£
.\"O .\" These applications should need to refer to
.\"O .\" all the types and structures by their generic names
.\"O .\" "Elf_xxx"
.\"O .\" and to the macros by
.\"O .\" "ELF_xxx".
.\" ¤³¤ì¤é¤Î¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ï¡¢¥¸¥§¥Í¥ê¥Ã¥¯Ì¾
.\" all the types and structures by their generic names
.\" "Elf_xxx"
.\" ¤Ë¤è¤Ã¤ÆÁ´¤Æ¤Î·¿¤È¹½Â¤ÂΤò»²¾È¤·¤¿¤ê¡¢
.\" "ELF_xxx"
.\" ¤Ë¤è¤Ã¤Æ¥Þ¥¯¥í¤ò»²¾È¤·¤¿¤ê¤¹¤ë¤¹¤Ù¤­¤Ç¤¢¤ë¡£
.\"O .\" Applications written this way can be compiled on any architecture,
.\"O .\" regardless of whether the host is 32-bit or 64-bit.
.\" ¤³¤Î¤è¤¦¤Ë¤·¤Æ½ñ¤«¤ì¤¿¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ï¡¢
.\" ¥Û¥¹¥È¤¬ 32 ¥Ó¥Ã¥È¤« 64 ¥Ó¥Ã¥È¤«¤Ë´Ø¤ï¤é¤º¡¢
.\" ¤É¤Î¥¢¡¼¥­¥Æ¥¯¥Á¥ã¾å¤Ç¤â¥³¥ó¥Ñ¥¤¥ë¤Ç¤­¤ë¡£
.\" .PP
.\"O .\" Should an application need to process ELF files of an unknown
.\"O .\" architecture, then the application needs to explicitly use either
.\"O .\" "Elf32_xxx"
.\"O .\" or
.\"O .\" "Elf64_xxx"
.\"O .\" type and structure names.
.\" ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤¬Ì¤ÃΤΥ¢¡¼¥­¥Æ¥¯¥Á¥ã¤Î ELF ¥Õ¥¡¥¤¥ë¤ò
.\" ½èÍý¤¹¤ëɬÍפ¬¤¢¤ë¾ì¹ç¡¢¤½¤Î¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ÏÌÀ¼¨Åª¤Ë
.\" "Elf32_xxx"
.\" ¤Þ¤¿¤Ï
.\" "Elf64_xxx"
.\" ¤È¤¤¤¦·¿Ì¾¤È¹½Â¤ÂÎ̾¤ò»È¤¦É¬Íפ¬¤¢¤ë¡£
.\"O .\" Likewise, the macros need to be identified by
.\"O .\" "ELF32_xxx"
.\"O .\" or
.\"O .\" "ELF64_xxx".
.\" ƱÍͤˡ¢¥Þ¥¯¥í¤Ï
.\" "ELF32_xxx"
.\" ¤Þ¤¿¤Ï
.\" "ELF64_xxx"
.\" ¤Ç¼±Ê̤µ¤ì¤ëɬÍפ¬¤¢¤ë¡£
.\" .PP
.\"O This header file describes the above mentioned headers as C structures
.\"O and also includes structures for dynamic sections, relocation sections and
.\"O symbol tables.
¤³¤Î¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Ï¾åµ­¤Î¥Ø¥Ã¥À¤ò C ¸À¸ì¤Î¹½Â¤ÂΤǵ­½Ò¤·¡¢
¤Þ¤¿Æ°Åª¥»¥¯¥·¥ç¥ó¡¦ºÆÇÛÃÖ²Äǽ¥»¥¯¥·¥ç¥ó¡¦¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¤Î¹½Â¤ÂΤâ
´Þ¤ó¤Ç¤¤¤ë¡£
.PP
.\"O The following types are used for N-bit architectures (N=32,64,
.\"O .I ElfN
.\"O stands for
.\"O .I Elf32
.\"O or
.\"O .IR Elf64 ,
.\"O .I uintN_t
.\"O stands for
.\"O .I uint32_t
.\"O or
.\"O .IR uint64_t ):
°Ê²¼¤Î·¿¤Ï N ¥Ó¥Ã¥È¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤Ç»È¤ï¤ì¤ë (N=32,64 ¤Ç¤¢¤ê
.I ElfN
¤Ï
.I Elf32
¤Þ¤¿¤Ï
.I Elf64
¤òɽ¤·¡¢
.I uintN_t
¤Ï
.I uint32_t
¤Þ¤¿¤Ï
.I uint64_t
¤òɽ¤¹):
.in +4n
.nf

.\"O ElfN_Addr   Unsigned program address, uintN_t
ElfN_Addr       Éä¹æ¤Ê¤·¤Î¥×¥í¥°¥é¥à¥¢¥É¥ì¥¹, uintN_t
.\"O ElfN_Off    Unsigned file offset, uintN_t
ElfN_Off        Éä¹æ¤Ê¤·¤Î¥Õ¥¡¥¤¥ë¥ª¥Õ¥»¥Ã¥È, uintN_t
.\"O ElfN_Section     Unsigned section index, uint16_t
ElfN_Section    Éä¹æ¤Ê¤·¤Î¥»¥¯¥·¥ç¥ó¥¤¥ó¥Ç¥Ã¥¯¥¹, uint16_t
.\"O ElfN_Versym     Unsigned version symbol information, uint16_t
ElfN_Versym     Éä¹æ¤Ê¤·¤Î¥Ð¡¼¥¸¥ç¥ó¥·¥ó¥Ü¥ë¾ðÊó, uint16_t
Elf_Byte        unsigned char
ElfN_Half       uint16_t
ElfN_Sword      int32_t
ElfN_Word       uint32_t
ElfN_Sxword     int64_t
ElfN_Xword      uint64_t
.\"O .\" Elf32_Size  Unsigned object size
.\" Elf32_Size  Éä¹æ¤Ê¤·¤Î¥ª¥Ö¥¸¥§¥¯¥È¥µ¥¤¥º
.fi
.in
.PP
.\"O (Note: The *BSD terminology is a bit different.
.\"O There
.\"O .I Elf64_Half
.\"O is
.\"O twice as large as
.\"O .IR Elf32_Half ,
.\"O and
.\"O .I Elf64Quarter
.\"O is used for
.\"O .IR uint16_t .
.\"O In order to avoid confusion these types are replaced by explicit ones
.\"O in the below.)
(Ãí°Õ: *BSD ¤Ç¤ÎÍѸì¤Ï¾¯¤·°Û¤Ê¤ë¡£
.I Elf64_Half
¤Ï
.I Elf32_Half
¤Î 2 ÇܤǤ¢¤ê¡¢
.I Elf64Quarter
¤¬
.I uint16_t
¤ËÍѤ¤¤é¤ì¤ë¡£
º®Íð¤òÈò¤±¤ë¤¿¤á¡¢°Ê²¼¤Ç¤Ï¡¢¤³¤ì¤é¤Î·¿¤Ï¥µ¥¤¥º¤¬¼«ÌÀ¤Ê·¿¤ËÃÖ¤­´¹¤¨¤Æ¤¢¤ë¡£)
.PP
.\"O All data structures that the file format defines follow the
.\"O "natural"
.\"O size and alignment guidelines for the relevant class.
¤³¤Î¥Õ¥¡¥¤¥ë¥Õ¥©¡¼¥Þ¥Ã¥È¤¬ÄêµÁ¤¹¤ëÁ´¤Æ¤Î¥Ç¡¼¥¿¹½Â¤ÂΤϡ¢
´ØÏ¢¤¹¤ë¥¯¥é¥¹¤Î
"¼«Á³¤Ê"
¥µ¥¤¥º¤ÈÇÛÃ֤λؿˤ˽¾¤¦¡£
.\"O If necessary,
.\"O data structures contain explicit padding to ensure 4-byte alignment
.\"O for 4-byte objects, to force structure sizes to a multiple of 4, etc.
ɬÍפʾì¹ç¡¢¥Ç¡¼¥¿¹½Â¤ÂΤǤÏÌÀ¼¨Åª¤Ê¥Ñ¥Ç¥£¥ó¥° (padding, µÍ¤á¹þ¤ß)
¤¬¹Ô¤Ê¤ï¤ì¤ë¡£¤³¤ì¤Ï 4 ¥Ð¥¤¥È¥ª¥Ö¥¸¥§¥¯¥È¤ËÂФ¹¤ë
4 ¥Ð¥¤¥ÈÇÛÃÖ¤òÊݾڤ¹¤ë¤¿¤á¤ä¡¢
¹½Â¤ÂΤΥµ¥¤¥º¤ò 4 ¤ÎÇÜ¿ô¤Ë¤¹¤ë¤¿¤á¤Ê¤É¤Ç¤¢¤ë¡£
.PP
.\"O The ELF header is described by the type
.\"O .I Elf32_Ehdr
.\"O or
.\"O .IR Elf64_Ehdr :
ELF ¥Ø¥Ã¥À¤Ï·¿
.I Elf32_Ehdr
¤Þ¤¿¤Ï
.I Elf64_Ehdr
¤Çµ­½Ò¤µ¤ì¤ë:
.in +4n
.nf

#define EI_NIDENT 16

typedef struct {
    unsigned char e_ident[EI_NIDENT];
    uint16_t      e_type;
    uint16_t      e_machine;
    uint32_t      e_version;
    ElfN_Addr     e_entry;
    ElfN_Off      e_phoff;
    ElfN_Off      e_shoff;
    uint32_t      e_flags;
    uint16_t      e_ehsize;
    uint16_t      e_phentsize;
    uint16_t      e_phnum;
    uint16_t      e_shentsize;
    uint16_t      e_shnum;
    uint16_t      e_shstrndx;
} ElfN_Ehdr;
.fi
.in
.PP
.\"O The fields have the following meanings:
¥Õ¥£¡¼¥ë¥É¤Ï°Ê²¼¤Î°ÕÌ£¤ò»ý¤Ä:
.\" .Bl -tag -width "e_phentsize"
.TP 12
.IR e_ident
.\"O This array of bytes specifies to interpret the file,
.\"O independent of the processor or the file's remaining contents.
¤³¤Î¥Ð¥¤¥ÈÇÛÎó¤Ï¡¢¥×¥í¥»¥Ã¥µ¤ä¥Õ¥¡¥¤¥ë¤Î¾¤ÎÉôʬ¤Ë¤Ï°Í¸¤»¤º¤Ë¡¢
¥Õ¥¡¥¤¥ë¤ò²ò¼á (interpret) ¤¹¤ë¤¿¤á¤Ë»ØÄꤵ¤ì¤ë¡£
.\"O Within this array everything is named by macros, which start with
.\"O the prefix
.\"O .BR EI_
.\"O and may contain values which start with the prefix
.\"O .BR ELF .
¤³¤ÎÇÛÎóÆâ¤Î¤¹¤Ù¤Æ¤Î¤â¤Î¤Ï¡¢ÀÜƬ¼­
.BR EI_
¤Ç»Ï¤Þ¤ë¥Þ¥¯¥í¤Î̾Á°¤¬ÉÕ¤­¡¢ÀÜƬ¼­
.BR ELF
¤Ç»Ï¤Þ¤ëÃͤò»ý¤Ä¡£
.\"O The following macros are defined:
°Ê²¼¤Î¥Þ¥¯¥í¤¬ÄêµÁ¤µ¤ì¤Æ¤¤¤ë:
.RS 12
.\" .Bl -tag -width "EI_VERSION" \" EI_ABIVERSION
.TP 12
.BR EI_MAG0
.\"O The first byte of the magic number.
.\"O It must be filled with
.\"O .BR ELFMAG0 .
¥Þ¥¸¥Ã¥¯¥Ê¥ó¥Ð¡¼¤ÎÂè 1 ¥Ð¥¤¥È¡£
.BR ELFMAG0
¤ÇËä¤á¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
(0: 0x7f)
.TP
.BR EI_MAG1
.\"O The second byte of the magic number.
.\"O It must be filled with
.\"O .BR ELFMAG1 .
¥Þ¥¸¥Ã¥¯¥Ê¥ó¥Ð¡¼¤ÎÂè 2 ¥Ð¥¤¥È¡£
.BR ELFMAG1
¤ÇËä¤á¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
(1: \(aqE\(aq)
.TP
.BR EI_MAG2
.\"O The third byte of the magic number.
.\"O It must be filled with
.\"O .BR ELFMAG2 .
¥Þ¥¸¥Ã¥¯¥Ê¥ó¥Ð¡¼¤ÎÂè 3 ¥Ð¥¤¥È¡£
.BR ELFMAG2
¤ÇËä¤á¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
(2: \(aqL\(aq)
.TP
.BR EI_MAG3
.\"O The fourth byte of the magic number.
.\"O It must be filled with
.\"O .BR ELFMAG3 .
¥Þ¥¸¥Ã¥¯¥Ê¥ó¥Ð¡¼¤ÎÂè 4 ¥Ð¥¤¥È¡£
.BR ELFMAG3
¤ÇËä¤á¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
(3: \(aqF\(aq)
.TP
.BR EI_CLASS
.\"O The fifth byte identifies the architecture for this binary:
Âè 5 ¥Ð¥¤¥È¤Ï¡¢¤³¤Î¥Ð¥¤¥Ê¥ê¤Î¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤ò¼¨¤¹:
.RS 12
.\" .Bl -tag -width "ELFCLASSNONE" -compact
.TP 14
.PD 0
.BR ELFCLASSNONE
.\"O This class is invalid.
¤³¤Î¥¯¥é¥¹¤ÏÉÔÀµ¤Ç¤¢¤ë¡£
.TP
.BR ELFCLASS32
.\"O This defines the 32-bit architecture.
32 ¥Ó¥Ã¥È¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤òÄêµÁ¤¹¤ë¡£
.\"O It supports machines with files
.\"O and virtual address spaces up to 4 Gigabytes.
¥Õ¥¡¥¤¥ë¤È²¾ÁÛ¥¢¥É¥ì¥¹¶õ´Ö¤¬ 4 ¥®¥¬¥Ð¥¤¥È¤Þ¤Ç¤Î¥Þ¥·¥ó¤ò¥µ¥Ý¡¼¥È¤¹¤ë¡£
.TP
.BR ELFCLASS64
.\"O This defines the 64-bit architecture.
64 ¥Ó¥Ã¥È¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤òÄêµÁ¤¹¤ë¡£
.PD
.RE
.\" .El
.TP
.BR EI_DATA
.\"O The sixth byte specifies the data encoding of the processor-specific
.\"O data in the file.
.\"O Currently these encodings are supported:
Âè 6 ¥Ð¥¤¥È¤Ï¥Õ¥¡¥¤¥ëÆâ¤Î¥×¥í¥»¥Ã¥µ¸ÇÍ­¥Ç¡¼¥¿¤Î
¥Ç¡¼¥¿¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¤ò»ØÄꤹ¤ë¡£
¸½ºß¤Î¤È¤³¤í°Ê²¼¤Î¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¤¬¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤ë:
.\" .Bl -tag -width "ELFDATA2LSB" -compact
.RS 12
.TP 14
.PD 0
.BR ELFDATANONE
.\"O Unknown data format.
ÉÔÌÀ¤Ê¥Ç¡¼¥¿¥Õ¥©¡¼¥Þ¥Ã¥È¡£
.TP
.BR ELFDATA2LSB
.\"O Two's complement, little-endian.
2 ¤ÎÊä¿ô¡¢¥ê¥È¥ë¥¨¥ó¥Ç¥£¥¢¥ó¡£
.TP
.BR ELFDATA2MSB
.\"O Two's complement, big-endian.
2 ¤ÎÊä¿ô¡¢¥Ó¥Ã¥°¥¨¥ó¥Ç¥£¥¢¥ó¡£
.PD
.RE
.\" .El
.TP
.PD 0
.BR EI_VERSION
.\"O The version number of the ELF specification:
ELF »ÅÍͤΥС¼¥¸¥ç¥óÈÖ¹æ:
.\" .Bl -tag -width "EV_CURRENT" -compact
.RS 12
.TP 14
.BR EV_NONE
.\"O Invalid version.
ÉÔÀµ¤Ê¥Ð¡¼¥¸¥ç¥ó¡£
.TP
.BR EV_CURRENT
.\"O Current version.
¸½ºß¤Î¥Ð¡¼¥¸¥ç¥ó¡£
.PD
.RE
.\".El
.TP
.BR EI_OSABI
.\"O This byte identifies the operating system
.\"O and ABI to which the object is targeted.
¤³¤Î¥Ð¥¤¥È¤Ï¥ª¥Ö¥¸¥§¥¯¥È¤Î¥¿¡¼¥²¥Ã¥È¤È¤Ê¤ë
¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤È ABI ¤ò¼¨¤¹¡£
.\"O Some fields in other ELF structures have flags
.\"O and values that have platform-specific meanings;
¾¤Î ELF ¹½Â¤ÂΤΥե£¡¼¥ë¥É¤Ë¤Ï¡¢
¥×¥é¥Ã¥È¥Õ¥©¡¼¥à¸ÇÍ­¤Î°ÕÌ£¤ò»ý¤Ä¥Õ¥é¥°¤äÃͤò»ý¤Ä¤â¤Î¤â¤¢¤ë;
.\"O the interpretation of those fields is determined by the value of this byte.
.\"O E.g.:
¤³¤ì¤é¤Î¥Õ¥£¡¼¥ë¥É¤Î²ò¼á¤Ï¡¢¤³¤Î¥Ð¥¤¥È¤ÎÃͤˤè¤Ã¤Æ·èÄꤵ¤ì¤ë¡£
Î㤨¤Ð:
.\" .Bl -tag -width "ELFOSABI_STANDALONE" -compact
.RS 12
.TP 20
.PD 0
.BR ELFOSABI_NONE
.\"O Same as ELFOSABI_SYSV
ELFOSABI_SYSV ¤ÈƱ¤¸¡£
.\" 0
.TP
.BR ELFOSABI_SYSV
UNIX System V ABI.
.\" 0
.\" synonym: ELFOSABI_NONE
.TP
.BR ELFOSABI_HPUX
HP-UX ABI.
.\" 1
.TP
.BR ELFOSABI_NETBSD
NetBSD ABI.
.\" 2
.TP
.BR ELFOSABI_LINUX
Linux ABI.
.\" 3
.\" .TP
.\" .BR ELFOSABI_HURD
.\" Hurd ABI.
.\" 4
.\" .TP
.\" .BR ELFOSABI_86OPEN
.\" 86Open Common IA32 ABI.
.\" 5
.TP
.BR ELFOSABI_SOLARIS
Solaris ABI.
.\" 6
.\" .It Dv ELFOSABI_MONTEREY
.\" Monterey project ABI.
.\"O Now replaced by
.\" ELFOSABI_AIX
.\" 7
.TP
.BR ELFOSABI_IRIX
IRIX ABI.
.\" 8
.TP
.BR ELFOSABI_FREEBSD
FreeBSD ABI.
.\" 9
.TP
.BR ELFOSABI_TRU64
TRU64 UNIX ABI.
.\" 10
.\" ELFOSABI_MODESTO
.\" 11
.\" ELFOSABI_OPENBSD
.\" 12
.TP
.BR ELFOSABI_ARM
.\"O ARM architecture ABI.
ARM ¥¢¡¼¥­¥Æ¥¯¥Á¥ã ABI.
.\" 97
.TP
.BR ELFOSABI_STANDALONE
.\"O Stand-alone (embedded) ABI.
¥¹¥¿¥ó¥É¥¢¥í¥ó (ÁȤ߹þ¤ß) ABI.
.\" 255
.\" .El
.PD
.RE
.TP
.BR EI_ABIVERSION
.\"O This byte identifies the version of the ABI
.\"O to which the object is targeted.
¤³¤Î¥Ð¥¤¥È¤Ï¥ª¥Ö¥¸¥§¥¯¥È¤¬¥¿¡¼¥²¥Ã¥È¤È¤·¤Æ¤¤¤ë ABI ¤Î¥Ð¡¼¥¸¥ç¥ó¤ò¼¨¤¹¡£
.\"O This field is used to distinguish among incompatible versions of an ABI.
¤³¤Î¥Õ¥£¡¼¥ë¥É¤Ï¸ß´¹À­¤Î¤Ê¤¤ ABI ¤Î¥Ð¡¼¥¸¥ç¥ó¤ò¶èÊ̤¹¤ë¤¿¤á¤Ë»È¤ï¤ì¤ë¡£
.\"O The interpretation of this version number
.\"O is dependent on the ABI identified by the
.\"O .B EI_OSABI
.\"O field.
¤³¤Î¥Ð¡¼¥¸¥ç¥óÈÖ¹æ¤Î²ò¼á¤Ï¡¢
.B EI_OSABI
¥Õ¥£¡¼¥ë¥É¤Ç¼±Ê̤µ¤ì¤ë ABI ¤Ë°Í¸¤¹¤ë¡£
.\"O Applications conforming to this specification use the value 0.
¤³¤Î»ÅÍͤ˽àµò¤¹¤ë¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ï¡¢ÃÍ 0 ¤ò»È¤¦¡£
.TP
.BR EI_PAD
.\"O Start of padding.
.\"O These bytes are reserved and set to zero.
.\"O Programs
.\"O which read them should ignore them.
.\"O The value for
.\"O .B EI_PAD
.\"O will change in
.\"O the future if currently unused bytes are given meanings.
¥Ñ¥Ç¥£¥ó¥°¤Î³«»Ï¡£
¤³¤ì¤é¤Î¥Ð¥¤¥È¤ÏͽÌ󤵤ì¤Æ¤ª¤ê¡¢0 ¤ËÀßÄꤵ¤ì¤Æ¤¤¤ë¡£
¤³¤ì¤é¤òÆɤ߹þ¤à¥×¥í¥°¥é¥à¤Ï¡¢¤³¤ì¤é¤Î¥Ð¥¤¥È¤ò̵»ë¤¹¤Ù¤­¤Ç¤¢¤ë¡£
¸½ºß»È¤ï¤ì¤Æ¤¤¤Ê¤¤¥Ð¥¤¥È¤Ë°ÕÌ£¤¬Í¿¤¨¤é¤ì¤ë¾ì¹ç¡¢
.B EI_PAD
¤ÎÃͤϾ­ÍèÊѹ¹¤µ¤ì¤ë¤«¤â¤·¤ì¤Ê¤¤¡£
.TP
.BR EI_BRAND
.\"O Start of architecture identification.
¥¢¡¼¥­¥Æ¥¯¥Á¥ã ID ¤Î³«»Ï¡£
.TP
.BR EI_NIDENT
.\"O The size of the
.\"O .I e_ident
.\"O array.
.I e_ident
ÇÛÎó¤Î¥µ¥¤¥º¡£
.\" .El
.RE
.TP
.IR e_type
.\"O This member of the structure identifies the object file type:
¤³¤Î¹½Â¤ÂΤΥá¥ó¥Ð¤Ï¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¥¿¥¤¥×¤ò¼¨¤¹:
.RS 12
.\" .Bl -tag -width "ET_NONE" -compact
.TP 12
.PD 0
.BR ET_NONE
.\"O An unknown type.
ÉÔÌÀ¤Ê¥¿¥¤¥×¡£
.TP
.BR ET_REL
.\"O A relocatable file.
ºÆÇÛÃÖ²Äǽ¥Õ¥¡¥¤¥ë¡£
.TP
.BR ET_EXEC
.\"O An executable file.
¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¡£
.TP
.BR ET_DYN
.\"O A shared object.
¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¡£
.TP
.BR ET_CORE
.\"O A core file.
¥³¥¢¥Õ¥¡¥¤¥ë¡£
.PD
.RE
.\" .El
.TP
.IR e_machine
.\"O This member specifies the required architecture for an individual file.
.\"O E.g.:
¤³¤Î¥á¥ó¥Ð¤Ï¸Ä¡¹¤Î¥Õ¥¡¥¤¥ë¤ËɬÍפȤµ¤ì¤ë¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤ò»ØÄꤹ¤ë¡£
Îã:
.RS 12
.\" .Bl -tag -width "EM_MIPS_RS4_BE" -compact
.TP 12
.PD 0
.BR EM_NONE
.\"O An unknown machine.
ÉÔÌÀ¤Ê¥Þ¥·¥ó¡£
.\" 0
.TP
.BR EM_M32
AT&T WE 32100.
.\" 1
.TP
.BR EM_SPARC
Sun Microsystems SPARC.
.\" 2
.TP
.BR EM_386
Intel 80386.
.\" 3
.TP
.BR EM_68K
Motorola 68000.
.\" 4
.TP
.BR EM_88K
Motorola 88000.
.\" 5
.\" .It Dv EM_486
.\" Intel 80486.
.\" 6
.TP
.BR EM_860
Intel 80860.
.\" 7
.TP
.BR EM_MIPS
.\"O MIPS RS3000 (big-endian only).
MIPS RS3000 (¥Ó¥Ã¥°¥¨¥ó¥Ç¥£¥¢¥ó¤Î¤ß)¡£
.\" 8
.\" EM_S370
.\" 9
.\" .It Dv EM_MIPS_RS4_BE
.\"O .\" MIPS RS4000 (big-endian only). Deprecated.
.\" MIPS RS4000 (¥Ó¥Ã¥°¥¨¥ó¥Ç¥£¥¢¥ó¤Î¤ß)¡£Èó¿ä¾©¡£
.\" 10
.\"O .\" EM_MIPS_RS3_LE (MIPS R3000 little-endian)
.\" EM_MIPS_RS3_LE (MIPS R3000 ¥ê¥È¥ë¥¨¥ó¥Ç¥£¥¢¥ó)¡£
.\" 10
.TP
.BR EM_PARISC
HP/PA.
.\" 15
.TP
.BR EM_SPARC32PLUS
.\"O SPARC with enhanced instruction set.
³Èĥ̿Î᥻¥Ã¥ÈÉÕ¤­ SPARC¡£
.\" 18
.TP
.BR EM_PPC
PowerPC.
.\" 20
.TP
.BR EM_PPC64
PowerPC 64-bit.
.\" 21
.TP
.BR EM_S390
IBM S/390
.\" 22
.TP
.BR EM_ARM
Advanced RISC Machines
.\" 40
.TP
.BR EM_SH
Renesas SuperH
.\" 42
.TP
.BR EM_SPARCV9
SPARC v9 64-bit.
.\" 43
.TP
.BR EM_IA_64
Intel Itanium
.\" 50
.TP
.BR EM_X86_64
AMD x86-64
.\" 62
.TP
.BR EM_VAX
DEC Vax.
.\" 75
.\" EM_CRIS
.\" 76
.\" .It Dv EM_ALPHA
.\" Compaq [DEC] Alpha.
.\" .It Dv EM_ALPHA_EXP
.\"O .\" Compaq [DEC] Alpha with enhanced instruction set.
.\" ³Èĥ̿Î᥻¥Ã¥ÈÉÕ¤­ Compaq [DEC] Alpha¡£
.PD
.RE
.\" .El
.TP
.IR e_version
.\"O This member identifies the file version:
¤³¤Î¥á¥ó¥Ð¤Ï¥Õ¥¡¥¤¥ë¥Ð¡¼¥¸¥ç¥ó¤ò¼¨¤¹:
.\" .Bl -tag -width "EV_CURRENT" -compact
.RS 12
.TP 12
.PD 0
.BR EV_NONE
.\"O Invalid version.
ÉÔÀµ¤Ê¥Ð¡¼¥¸¥ç¥ó¡£
.TP
.BR EV_CURRENT
.\"O Current version.
¸½ºß¤Î¥Ð¡¼¥¸¥ç¥ó¡£
.\" .El
.PD
.RE
.TP
.IR e_entry
.\"O This member gives the virtual address to which the system first transfers
.\"O control, thus starting the process.
¤³¤Î¥á¥ó¥Ð¤Ï¡¢¥·¥¹¥Æ¥à¤¬ºÇ½é¤ËÀ©¸æ¤òÅϤ¹¡¢
¤Ä¤Þ¤ê¥×¥í¥»¥¹¤ò³«»Ï¤¹¤ë²¾ÁÛ¥¢¥É¥ì¥¹¤ò»ØÄꤹ¤ë¡£
.\"O If the file has no associated entry
.\"O point, this member holds zero.
¥Õ¥¡¥¤¥ë¤Ë¥¨¥ó¥È¥ê¥Ý¥¤¥ó¥È¤¬´ØÏ¢ÉÕ¤±¤é¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¡¢
¤³¤Î¥á¥ó¥Ð¤Ë¤Ï 0 ¤¬Æþ¤ë¡£
.TP
.IR e_phoff
.\"O This member holds the program header table's file offset in bytes.
.\"O If
.\"O the file has no program header table, this member holds zero.
¤³¤Î¥á¥ó¥Ð¤Ï¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î
¥Õ¥¡¥¤¥ë¥ª¥Õ¥»¥Ã¥È (¥Ð¥¤¥Èñ°Ì) ¤òÊÝ»ý¤¹¤ë¡£
¥Õ¥¡¥¤¥ë¤Ë¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤¬¤Ê¤¤¾ì¹ç¡¢
¤³¤Î¥á¥ó¥Ð¤Ë¤Ï 0 ¤¬Æþ¤ë¡£
.TP
.IR e_shoff
.\"O This member holds the section header table's file offset in bytes.
.\"O If the
.\"O file has no section header table this member holds zero.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î
¥Õ¥¡¥¤¥ë¥ª¥Õ¥»¥Ã¥È (¥Ð¥¤¥Èñ°Ì) ¤òÊÝ»ý¤¹¤ë¡£
¥Õ¥¡¥¤¥ë¤Ë¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤¬¤Ê¤¤¾ì¹ç¡¢
¤³¤Î¥á¥ó¥Ð¤Ë¤Ï 0 ¤¬Æþ¤ë¡£
.TP
.IR e_flags
.\"O This member holds processor-specific flags associated with the file.
.\"O Flag names take the form EF_`machine_flag'.
.\"O Currently no flags have been defined.
¤³¤Î¥á¥ó¥Ð¤Ï¥Õ¥¡¥¤¥ë¤Ë´ØÏ¢ÉÕ¤±¤é¤ì¤¿¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î¥Õ¥é¥°¤òÊÝ»ý¤¹¤ë¡£
¥Õ¥é¥°¤Î̾Á°¤Ï EF_`machine_flag' ¤È¤¤¤¦·Á¼°¤Ç¤¢¤ë¡£
¸½ºß¤Î¤È¤³¤í¥Õ¥é¥°¤ÏÄêµÁ¤µ¤ì¤Æ¤¤¤Ê¤¤¡£
.TP
.IR e_ehsize
.\"O This member holds the ELF header's size in bytes.
¤³¤Î¥á¥ó¥Ð¤Ï ELF ¥Ø¥Ã¥À¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì) ¤òÊÝ»ý¤¹¤ë¡£
.TP
.IR e_phentsize
.\"O This member holds the size in bytes of one entry in the file's program header
.\"O table; all entries are the same size.
¤³¤Î¥á¥ó¥Ð¤Ï¤³¤Î¥Õ¥¡¥¤¥ë¤Î¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î
1 ¥¨¥ó¥È¥ê¤¢¤¿¤ê¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì) ¤òÊÝ»ý¤¹¤ë;
Á´¤Æ¤Î¥¨¥ó¥È¥ê¤ÏƱ¤¸¥µ¥¤¥º¤Ç¤¢¤ë¡£
.TP
.IR e_phnum
.\"O This member holds the number of entries in the program header
.\"O table.
¤³¤Î¥á¥ó¥Ð¤Ï¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ë¤¢¤ë¥¨¥ó¥È¥ê¤Î¿ô¤òÊÝ»ý¤¹¤ë¡£
.\"O Thus the product of
.\"O .IR e_phentsize
.\"O and
.\"O .IR e_phnum
.\"O gives the table's size
.\"O in bytes.
¤è¤Ã¤Æ
.IR e_phentsize
¤È
.IR e_phnum
¤ÎÀѤ¬¥Æ¡¼¥Ö¥ë¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì) ¤Ë¤Ê¤ë¡£
.\"O If a file has no program header,
.\"O .IR e_phnum
.\"O holds the value zero.
¥Õ¥¡¥¤¥ë¤Ë¥×¥í¥°¥é¥à¥Ø¥Ã¥À¤¬¤Ê¤¤¾ì¹ç¡¢
.IR e_phnum
¤ÏÃÍ 0 ¤òÊÝ»ý¤¹¤ë¡£
.TP
.IR e_shentsize
.\"O This member holds a sections header's size in bytes.
.\"O A section header is one
.\"O entry in the section header table; all entries are the same size.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì) ¤òÊÝ»ý¤¹¤ë¡£
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¤Ï¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î 1 ¤Ä¤Î¥¨¥ó¥È¥ê¤Ç¤¢¤ë;
Á´¤Æ¤Î¥¨¥ó¥È¥ê¤ÏƱ¤¸¥µ¥¤¥º¤Ç¤¢¤ë¡£
.TP
.IR e_shnum
.\"O This member holds the number of entries in the section header table.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ë¤¢¤ë¥¨¥ó¥È¥ê¤Î¿ô¤òÊÝ»ý¤¹¤ë¡£
.\"O Thus
.\"O the product of
.\"O .IR e_shentsize
.\"O and
.\"O .IR e_shnum
.\"O gives the section header table's size in bytes.
¤è¤Ã¤Æ
.IR e_shentsize
¤È
.IR e_shnum
¤ÎÀѤϥ»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì) ¤Ë¤Ê¤ë¡£
.\"O If a file has no section
.\"O header table,
.\"O .IR e_shnum
.\"O holds the value of zero.
¥Õ¥¡¥¤¥ë¤Ë¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤¬¤Ê¤¤¾ì¹ç¡¢
.IR e_shnum
¤ÏÃÍ 0 ¤òÊÝ»ý¤¹¤ë¡£
.TP
.IR e_shstrndx
.\"O This member holds the section header table index of the entry associated
.\"O with the section name string table.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥¯¥·¥ç¥ó̾ʸ»úÎó¥Æ¡¼¥Ö¥ë¤Ë´ØÏ¢ÉÕ¤±¤é¤ì¤¿¥¨¥ó¥È¥ê¤Î
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤òÊÝ»ý¤¹¤ë¡£
.\"O If the file has no section name string
.\"O table, this member holds the value
.\"O .BR SHN_UNDEF .
¥Õ¥¡¥¤¥ë¤Ë¥»¥¯¥·¥ç¥ó̾ʸ»úÎó¥Æ¡¼¥Ö¥ë¤¬¤Ê¤¤¾ì¹ç¡¢
¤³¤Î¥á¥ó¥Ð¤ÏÃÍ
.BR SHN_UNDEF
¤òÊÝ»ý¤¹¤ë¡£
.BR SHN_UNDEF .
.RS 12
.\" .Bl -tag -width "SHN_LORESERVE"
.TP 14
.BR SHN_UNDEF
.\"O This value marks an undefined, missing, irrelevant, or otherwise meaningless
.\"O section reference.
¤³¤ÎÃͤÏ̤ÄêµÁ¡¦Â¸ºß¤·¤Ê¤¤¡¦Ìµ´Ø·¸¤½¤Î¾¡¢
°ÕÌ£¤Î¤Ê¤¤¥»¥¯¥·¥ç¥ó¤Î»²¾È¤Ç¤¢¤ë¤³¤È¤òɽ¤¹¡£
.\"O For example, a symbol
.\"O "defined"
.\"O relative to section number
.\"O .BR SHN_UNDEF
.\"O is an undefined symbol.
Î㤨¤Ð¡¢¥»¥¯¥·¥ç¥óÈÖ¹æ
.BR SHN_UNDEF
¤Ë´ØÏ¢¤Å¤±¤Æ¡ÖÄêµÁ¡×¤µ¤ì¤¿¥·¥ó¥Ü¥ë¤Ï¡¢¡Ö̤ÄêµÁ¡×¤Ê¥·¥ó¥Ü¥ë¤Ç¤¢¤ë¡£
.\"nakano ¤³¤³¤Î "defined" ¤ÏÄ̾ï¤Îʸ¤Î°ìÉô¤Ç¤Ï¡©
.TP
.BR SHN_LORESERVE
.\"O This value specifies the lower bound of the range of reserved indices.
¤³¤ÎÃͤÏͽÌóºÑ¤ß¤Î¥¤¥ó¥Ç¥Ã¥¯¥¹ÈϰϤβ¼¸Â¤ò»ØÄꤹ¤ë¡£
.TP
.BR SHN_LOPROC
.\"O Values greater than or equal to
.\"O .BR SHN_HIPROC
.\"O are reserved for processor-specific semantics.
¤³¤ÎÃͰʾå¤Ç
.BR SHN_HIPROC
°Ê²¼¤ÎÃͤϡ¢¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.TP
.BR SHN_HIPROC
.\"O Values less than or equal to
.\"O .BR SHN_LOPROC
.\"O are reserved for processor-specific semantics.
¤³¤ÎÃͰʲ¼¤Ç
.BR SHN_LOPROC
°Ê¾å¤ÎÃͤϡ¢¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.\"sato: SHN_{HI,LO}PROC ¤ÎÀâÌÀ¤Ï¡¢¸¶Ê¸¤Î´Ö°ã¤¤¤é¤·¤¤¡£
.TP
.BR SHN_ABS
.\"O This value specifies absolute values for the corresponding reference.
.\"O For
.\"O example, symbols defined relative to section number
.\"O .BR SHN_ABS
.\"O have absolute values and are not affected by relocation.
¤³¤ÎÃͤÏÂбþ¤¹¤ë»²¾È¤ÎÀäÂÐÃͤò»ØÄꤹ¤ë¡£
Î㤨¤Ð¡¢¥»¥¯¥·¥ç¥óÈÖ¹æ
.BR SHN_ABS
¤Ë´ØÏ¢¤Å¤±¤é¤ì¤¿¥·¥ó¥Ü¥ë¤ÏÀäÂÐÃͤòÊÝ»ý¤·¡¢ºÆÇÛÃ֤˱ƶÁ¤µ¤ì¤Ê¤¤¡£
.TP
.BR SHN_COMMON
.\"O Symbols defined relative to this section are common symbols, such as Fortran
.\"O COMMON or unallocated C external variables.
¤³¤Î¥»¥¯¥·¥ç¥ó¤Ë´ØÏ¢¤·¤ÆÄêµÁ¤µ¤ì¤¿¥·¥ó¥Ü¥ë¤Ï¡¢
Fortran ¤Î COMMON ¤ä C ¤Î̤³ä¤êÅö¤Æ external ÊÑ¿ô¤Î¤è¤¦¤Ê¡¢
¶¦ÄÌ¥·¥ó¥Ü¥ë¤Ç¤¢¤ë¡£
.TP
.BR SHN_HIRESERVE
.\"O This value specifies the upper bound of the range of reserved
.\"O indices between
.\"O .BR SHN_LORESERVE
.\"O and
.\"O .BR SHN_HIRESERVE ,
.\"O inclusive; the values do
.\"O not reference the section header table.
¤³¤ÎÃͤÏͽÌ󤵤줿¥¤¥ó¥Ç¥Ã¥¯¥¹¤ÎÈϰϤξå¸Â¤ò»ØÄꤹ¤ë¡£
.BR SHN_LORESERVE
¤È
.BR SHN_HIRESERVE
¤Ï´Þ¤Þ¤ì¤ë¡£
¤³¤ÎÃͤϥ»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤ò»²¾È¤·¤Ê¤¤¡£
.\"O That is, the section header table
.\"O does
.\"O .I not
.\"O contain entries for the reserved indices.
¤Ä¤Þ¤ê¡¢¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ï
ͽÌ󤵤줿¥¤¥ó¥Ç¥Ã¥¯¥¹¤Î¥¨¥ó¥È¥ê¤ò
.I ´Þ¤Þ¤Ê¤¤ ¡£
.RE
.\" .El
.\" .El
.PP
.\"O An executable or shared object file's program header table is an array of
.\"O structures, each describing a segment or other information the system needs
.\"O to prepare the program for execution.
¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¤Þ¤¿¤Ï¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Î¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ï¡¢
¥·¥¹¥Æ¥à¤Ë¤è¤ë¥×¥í¥°¥é¥à¼Â¹Ô½àÈ÷¤ËɬÍפʡ¢
¥»¥°¥á¥ó¥ÈÅù¤Î¾ðÊó¤òµ­½Ò¤¹¤ë¹½Â¤ÂΤÎÇÛÎó¤Ç¤¢¤ë¡£
.\"O An object file
.\"O .IR segment
.\"O contains one or more
.\"O .IR sections .
¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Î
.IR ¥»¥°¥á¥ó¥È
¤Ë¤Ï 1 ¤Ä°Ê¾å¤Î
.IR ¥»¥¯¥·¥ç¥ó
¤¬´Þ¤Þ¤ì¤ë¡£
.\"O Program headers are meaningful only for executable and shared object files.
¥×¥í¥°¥é¥à¥Ø¥Ã¥À¤Ï¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¤È¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Ç¤Î¤ß°ÕÌ£¤ò»ý¤Ä¡£
.\"O A file specifies its own program header size with the ELF header's
.\"O .IR e_phentsize
.\"O and
.\"O .IR e_phnum
.\"O members.
¥Õ¥¡¥¤¥ë¤Ï¼«¿È¤Î¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥µ¥¤¥º¤ò ELF ¥Ø¥Ã¥À¤Î
.IR e_phentsize
¥á¥ó¥Ð¤È
.IR e_phnum
¥á¥ó¥Ð¤Ç»ØÄꤹ¤ë¡£
.\"O The ELF program header is described by the type
.\"O .I Elf32_Phdr
.\"O or
.\"O .I Elf64_Phdr
.\"O depending on the architecture:
ELF ¥×¥í¥°¥é¥à¥Ø¥Ã¥À¤Ï
.I Elf32_Phdr
·¿¤Þ¤¿¤Ï
.I Elf64_Phdr
·¿¤Çµ­½Ò¤µ¤ì¤ë
(¤É¤Á¤é¤Ë¤Ê¤ë¤«¤Ï¥¢¡¼¥­¥Æ¥¯¥Á¥ã°Í¸):
.in +4n
.nf

typedef struct {
    uint32_t   p_type;
    Elf32_Off  p_offset;
    Elf32_Addr p_vaddr;
    Elf32_Addr p_paddr;
    uint32_t   p_filesz;
    uint32_t   p_memsz;
    uint32_t   p_flags;
    uint32_t   p_align;
} Elf32_Phdr;
.fi
.in
.in +4n
.nf

typedef struct {
    uint32_t   p_type;
    uint32_t   p_flags;
    Elf64_Off  p_offset;
    Elf64_Addr p_vaddr;
    Elf64_Addr p_paddr;
    uint64_t   p_filesz;
    uint64_t   p_memsz;
    uint64_t   p_align;
} Elf64_Phdr;
.fi
.in
.PP
.\"O The main difference between the 32-bit and the 64-bit program header lies
.\"O in the location of the
.\"O .IR p_flags
.\"O member in the total struct.
32 ¥Ó¥Ã¥È¤È 64 ¥Ó¥Ã¥È¤Î¥×¥í¥°¥é¥à¥Ø¥Ã¥À¤Î¼ç¤Ê°ã¤¤¤Ï¡¢¹½Â¤ÂΤˤª¤±¤ë
.IR p_flags
¥á¥ó¥Ð¤Î°ÌÃ֤ˤ¢¤ë¡£
.\" .Bl -tag -width "p_offset"
.TP 12
.IR p_type
.\"O This member of the Phdr struct tells what kind of segment this array
.\"O element describes or how to interpret the array element's information.
Phdr ¹½Â¤ÂΤΤ³¤Î¥á¥ó¥Ð¤Ï¡¢
¤³¤ÎÇÛÎóÍ×ÁǤ¬¤É¤Î¤è¤¦¤Ê¼ïÎà¤Î¥»¥°¥á¥ó¥È¤òµ­½Ò¤·¤Æ¤¤¤ë¤«¡¢
¤Þ¤¿¤Ï¤³¤ÎÇÛÎóÍ×ÁǤξðÊó¤ò¤É¤Î¤è¤¦¤Ë²ò¼á¤¹¤ë¤«¡¢¤òɽ¤¹¡£
.\" .Bl -tag -width "PT_DYNAMIC"
.RS 12
.TP 12
.BR PT_NULL
.\"O The array element is unused and the other members' values are undefined.
.\"O This lets the program header have ignored entries.
¤³¤ÎÇÛÎóÍ×ÁǤϻÈÍѤµ¤ì¤Æ¤ª¤é¤º¡¢¤½¤Î¾¤Î¥á¥ó¥Ð¤ÎÃͤÏ̤ÄêµÁ¤Ç¤¢¤ë¡£
¤³¤ì¤Ë¤è¤ê¡¢¤³¤Î¥×¥í¥°¥é¥à¥Ø¥Ã¥À¤Î¥¨¥ó¥È¥ê¤Ï̵»ë¤µ¤ì¤ë¡£
.TP
.BR PT_LOAD
.\"O The array element specifies a loadable segment, described by
.\"O .IR p_filesz
.\"O and
.\"O .IR p_memsz .
¤³¤ÎÇÛÎóÍ×ÁǤÏ
.IR p_filesz
¤È
.IR p_memsz
¤Çµ­½Ò¤µ¤ì¤ë¥í¡¼¥É²Äǽ¥»¥°¥á¥ó¥È¤ò»ØÄꤹ¤ë¡£
.\"O The bytes from the file are mapped to the beginning of the memory
.\"O segment.
¤³¤Î¥Õ¥¡¥¤¥ë¤«¤é¤Î¥Ð¥¤¥È¥Ç¡¼¥¿¤¬¡¢¤³¤Î¥á¥â¥ê¥»¥°¥á¥ó¥È¤ÎÀèƬ¤«¤é¥Þ¥Ã¥×¤µ¤ì¤ë¡£
.\"Osato:
.\"Osato: ¤³¤ÎÌõ¤Ï¼«¿È¤Ê¤·¡£¾¯¤·°ÕÌõµ¤Ì£¤«¤â¤·¤ì¤Ê¤¤¡£
.\"Osato:
.\"O If the segment's memory size
.\"O .IR Sy p_memsz
.\"O is larger than the file size
.\"O .IR Sy p_filesz ,
.\"O the
.\"O "extra"
.\"O bytes are defined to hold the value 0 and to follow the segment's
.\"O initialized area.
¥»¥°¥á¥ó¥È¤Î¥á¥â¥ê¥µ¥¤¥º
.IR Sy p_memsz
¤¬¥Õ¥¡¥¤¥ë¥µ¥¤¥º
.IR Sy p_filesz
¤è¤êÂ礭¤¤¾ì¹ç¡¢
¡Ö;¤Ã¤¿¡×¥Ð¥¤¥È¤ÏÃÍ 0 ¤È¤Ê¤ê¡¢
¤½¤Î¥»¥°¥á¥ó¥È½é´ü²½¥Ç¡¼¥¿¤Î¸å¤í¤ËÃÖ¤«¤ì¤ë¤ÈÄê¤á¤é¤ì¤Æ¤¤¤ë¡£
.\"O The file size may not be larger than the memory size.
¥Õ¥¡¥¤¥ë¥µ¥¤¥º¤Ï¥á¥â¥ê¥µ¥¤¥º¤è¤êÂ礭¤¯¤Æ¤Ï¤¤¤±¤Ê¤¤¡£
.\"O Loadable segment entries in the program header table appear in ascending
.\"O order, sorted on the
.\"O .IR p_vaddr
.\"O member.
¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Î¥í¡¼¥É²Äǽ¥»¥°¥á¥ó¥È¥¨¥ó¥È¥ê¤Ï¡¢
.IR p_vaddr
¥á¥ó¥Ð¤Î¾º½ç¤Ë¥½¡¼¥È¤µ¤ì¤Æ½Ð¸½¤¹¤ë¡£
.TP
.BR PT_DYNAMIC
.\"O The array element specifies dynamic linking information.
¤³¤ÎÇÛÎóÍ×ÁǤÏưŪ¥ê¥ó¥¯¾ðÊó¤ò»ØÄꤹ¤ë¡£
.TP
.BR PT_INTERP
.\"O The array element specifies the location and size of a null-terminated
.\"O pathname to invoke as an interpreter.
¤³¤ÎÇÛÎóÍ×ÁǤϡ¢¥¤¥ó¥¿¥×¥ê¥¿¤È¤·¤Æµ¯Æ°¤µ¤ì¤ë¥Ñ¥¹Ì¾ (NULL ʸ»ú½ªÃ¼)
¤Î°ÌÃ֤ȥµ¥¤¥º¤ò»ØÄꤹ¤ë¡£
.\"O This segment type is meaningful
.\"O only for executable files (though it may occur for shared objects).
¤³¤Î¥»¥°¥á¥ó¥È·¿¤Ï (¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¤Ë¤â¤¢¤ë¤«¤âÃΤì¤Ê¤¤¤¬)
¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¤Ç¤Î¤ß°ÕÌ£¤ò»ý¤Ä¡£
.\"O However it may not occur more than once in a file.
¤¿¤À¤·¡¢¤³¤Î¥»¥°¥á¥ó¥È·¿¤Ï 1 ¤Ä¤Î¥Õ¥¡¥¤¥ë¤Ë 2 ²ó°Ê¾å½Ð¸½¤·¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£
.\"O If it is present, it must precede any loadable segment entry.
¤â¤·Â¸ºß¤¹¤ë¾ì¹ç¡¢¤³¤Î¥»¥°¥á¥ó¥È·¿¤Ï
Á´¤Æ¤Î¥í¡¼¥É²Äǽ¥»¥°¥á¥ó¥È¥¨¥ó¥È¥ê¤è¤êÁ°¤Ë¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.TP
.BR PT_NOTE
.\"O The array element specifies the location and size for auxiliary information.
¤³¤ÎÇÛÎóÍ×ÁǤÏÊä­¾ðÊó (auxiliary information) ¤Î°ÌÃ֤ȥµ¥¤¥º¤ò»ØÄꤹ¤ë¡£
.TP
.BR PT_SHLIB
.\"O This segment type is reserved but has unspecified semantics.
.\"O Programs that
.\"O contain an array element of this type do not conform to the ABI.
¤³¤Î¥»¥°¥á¥ó¥È·¿¤ÏͽÌ󤵤ì¤Æ¤¤¤ë¤¬¡¢°ÕÌ£¤Ï»ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¡£
¤³¤Î·¿¤ÎÇÛÎóÍ×ÁǤòÊÝ»ý¤¹¤ë¥×¥í¥°¥é¥à¤Ï ABI ¤Ë½àµò¤·¤Ê¤¤¡£
.TP
.BR PT_PHDR
.\"O The array element, if present, specifies the location and size of the program
.\"O header table itself, both in the file and in the memory image of the program.
¤³¤ÎÇÛÎóÍ×ÁǤϡ¢¤â¤·Â¸ºß¤·¤Æ¤¤¤ë¤Ê¤é¤Ð¡¢
¥Õ¥¡¥¤¥ë¤ª¤è¤Ó¥×¥í¥°¥é¥à¤Î¥á¥â¥ê¥¤¥á¡¼¥¸ÁÐÊý¤Ë¤ª¤±¤ë
¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¼«¿È¤Î°ÌÃ֤ȥµ¥¤¥º¤ò»ØÄꤹ¤ë¡£
.\"O This segment type may not occur more than once in a file.
¤³¤Î¥»¥°¥á¥ó¥È·¿¤Ï 1 ¤Ä¤Î¥Õ¥¡¥¤¥ë¤Ë 2 ²ó°Ê¾å½Ð¸½¤·¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£
.\"O Moreover, it may
.\"O only occur if the program header table is part of the memory image of the
.\"O program.
¤µ¤é¤Ë¡¢¤³¤Î¥»¥°¥á¥ó¥È·¿¤¬Â¸ºß¤·¤Æ¤â¤è¤¤¤Î¤Ï¡¢¥×¥í¥°¥é¥à¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤¬
¥×¥í¥°¥é¥à¤Î¥á¥â¥ê¥¤¥á¡¼¥¸¤Î°ìÉô¤Ç¤¢¤ë¾ì¹ç¤Î¤ß¤Ç¤¢¤ë¡£
.\"O If it is present, it must precede any loadable segment entry.
¤â¤·Â¸ºß¤¹¤ë¾ì¹ç¡¢¤³¤ì¤ÏÁ´¤Æ¤Î¥í¡¼¥É²Äǽ¥»¥°¥á¥ó¥È¥¨¥ó¥È¥ê¤è¤ê
Á°¤Ë¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.TP
.BR PT_LOPROC
.\"O Values greater than or equal to
.\"O .BR PT_HIPROC
.\"O are reserved for processor-specific semantics.
¤³¤ÎÃͰʾå¤Ç
.BR PT_HIPROC
°Ê²¼¤ÎÃÍ¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.TP
.BR PT_HIPROC
.\"O Values less than or equal to
.\"O .BR PT_LOPROC
.\"O are reserved for processor-specific semantics.
¤³¤ÎÃͰʲ¼¤Ç
.BR PT_LOPROC
°Ê¾å¤ÎÃÍ¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.\"sato: PT_{HI,LO}PROC ¤ÎÀâÌÀ¤Ï¡¢¸¶Ê¸¤Î´Ö°ã¤¤¤é¤·¤¤¡£
.TP
.BR PT_GNU_STACK
.\"O GNU extension which is used by the Linux kernel to control the state of the
.\"O stack via the flags set in the
.\"O .IR p_flags
.\"O member.
GNU ³ÈÄ¥¤Ç¤¢¤ê¡¢Linux ¥«¡¼¥Í¥ë¤¬
.I p_flags
¤Î¥á¥ó¥Ð¡¼¤Ë¥»¥Ã¥È¤µ¤ì¤¿¥Õ¥é¥°·Ðͳ¤Ç¥¹¥¿¥Ã¥¯¤Î¾õÂÖ¤òÀ©¸æ¤¹¤ë¤¿¤á¤Ë»ÈÍѤ¹¤ë¡£
.\" .El
.RE
.TP
.IR p_offset
.\"O This member holds the offset from the beginning of the file at which
.\"O the first byte of the segment resides.
¤³¤Î¥á¥ó¥Ð¤Ï¡¢¥»¥°¥á¥ó¥È¤ÎÀèƬ¥Ð¥¤¥È¤¬¤¢¤ë
(¥Õ¥¡¥¤¥ëÀèƬ¤«¤é¤Î) ¥ª¥Õ¥»¥Ã¥È¤òÊÝ»ý¤¹¤ë¡£
.TP
.IR p_vaddr
.\"O This member holds the virtual address at which the first byte of the
.\"O segment resides in memory.
¤³¤Î¥á¥ó¥Ð¤Ï¡¢¥»¥°¥á¥ó¥È¤ÎÀèƬ¥Ð¥¤¥È¤¬¤¢¤ë
¥á¥â¥ê¤Î²¾ÁÛ¥¢¥É¥ì¥¹¤òÊÝ»ý¤¹¤ë¡£
.TP
.IR p_paddr
.\"O On systems for which physical addressing is relevant, this member is
.\"O reserved for the segment's physical address.
ʪÍý¥¢¥É¥ì¥¹¤¬°ÕÌ£¤ò¤â¤Ä¥·¥¹¥Æ¥à¤Ç¤Ï¡¢
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥°¥á¥ó¥È¤ÎʪÍý¥¢¥É¥ì¥¹¤È¤·¤ÆͽÌ󤵤ì¤Æ¤¤¤ë¡£
.\"O Under
.\"O BSD
.\"O this member is
.\"O not used and must be zero.
BSD ¤Ç¤Ï¤³¤Î¥á¥ó¥Ð¤Ï»ÈÍѤµ¤ì¤Ê¤¤¡£0 ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.TP
.IR p_filesz
.\"O This member holds the number of bytes in the file image of the segment.
.\"O It may be zero.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥°¥á¥ó¥È¤Î¥Õ¥¡¥¤¥ë¥¤¥á¡¼¥¸¤Î¥Ð¥¤¥È¿ô¤òÊÝ»ý¤¹¤ë¡£
¤³¤ì¤Ï 0 ¤Ç¤â¤è¤¤¡£
.TP
.IR p_memsz
.\"O This member holds the number of bytes in the memory image of the segment.
.\"O It may be zero.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥°¥á¥ó¥È¤Î¥á¥â¥ê¥¤¥á¡¼¥¸¤Î¥Ð¥¤¥È¿ô¤òÊÝ»ý¤¹¤ë¡£
¤³¤ì¤Ï 0 ¤Ç¤â¤è¤¤¡£
.TP
.IR p_flags
.\"O This member holds a bitmask of flags relevant to the segment:
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥°¥á¥ó¥È¤Ë´ØÏ¢¤¹¤ë¥Õ¥é¥°¤Î¥Ó¥Ã¥È¥Þ¥Ã¥×¤òÊÝ»ý¤¹¤ë:
.\" .Bl -tag -width "PF_X" -compact
.RS 12
.TP
.PD 0
.BR PF_X
.\"O An executable segment.
¼Â¹Ô²Äǽ¥»¥°¥á¥ó¥È¡£
.TP
.BR PF_W
.\"O A writable segment.
½ñ¤­¹þ¤ß²Äǽ¥»¥°¥á¥ó¥È.
.TP
.BR PF_R
.\"O A readable segment.
Æɤ߹þ¤ß²Äǽ¥»¥°¥á¥ó¥È¡£
.PD
.RE
.\" .El
.IP
.\"O A text segment commonly has the flags
.\"O .BR PF_X
.\"O and
.\"O .BR PF_R .
¥Æ¥­¥¹¥È¥»¥°¥á¥ó¥È¤Ï°ìÈ̤˥ե饰
.BR PF_X
¤È
.BR PF_R
¤ò»ý¤Ä¡£
.\"O A data segment commonly has
.\"O .BR PF_X ,
.\"O .BR PF_W
.\"O and
.\"O .BR PF_R .
¥Ç¡¼¥¿¥»¥°¥á¥ó¥È¤Ï°ìÈ̤Ë
.BR PF_X ,
.BR PF_W ,
.BR PF_R
¤ò»ý¤Ä¡£
.TP
.IR p_align
.\"O This member holds the value to which the segments are aligned in memory
.\"O and in the file.
¤³¤Î¥á¥ó¥Ð¤Ï¡¢¥»¥°¥á¥ó¥È¤¬¥á¥â¥ê¤ª¤è¤Ó¥Õ¥¡¥¤¥ë¤Ë¤ª¤¤¤ÆÇÛÃÖ (align)
¤µ¤ì¤ëÃͤòÊÝ»ý¤¹¤ë¡£
.\"nakano align ¤ÎÄêÌõ¤Ï¤¢¤ê¤Þ¤·¤¿¤Ã¤±¡©
.\"O Loadable process segments must have congruent values for
.\"O .IR p_vaddr
.\"O and
.\"O .IR p_offset ,
.\"O modulo the page size.
¥í¡¼¥É²Äǽ¥×¥í¥»¥¹¥»¥°¥á¥ó¥È¤Ï¡¢¥Ú¡¼¥¸¥µ¥¤¥º¤òË¡¤È¤·¤Æ
.IR p_vaddr
¤È
.IR p_offset
¤È¹çƱ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤
(ÌõÃí:¡Öp_vaddr mod ¥Ú¡¼¥¸¥µ¥¤¥º = p_offset mod ¥Ú¡¼¥¸¥µ¥¤¥º¡×
¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤)¡£¡£
.\"nakano ¤³¤¦¤¤¤¦¾ì¹ç¤ÏÉáÄÌ congruent "with" ¤À¤±¤É¡Ä
.\"O Values of zero and one mean no alignment is required.
0 ¤È 1 ¤È¤¤¤¦ÃͤÏÇÛÃÖ¤¬É¬Íפʤ¤¤³¤È¤ò°ÕÌ£¤¹¤ë¡£
.\"O Otherwise,
.\"O .IR p_align
.\"O should be a positive, integral power of two, and
.\"O .IR p_vaddr
.\"O should equal
.\"O .IR p_offset ,
.\"O modulo
.\"O .IR p_align .
¤½¤ì°Ê³°¤Î¾ì¹ç¡¢
.IR p_align
¤ÏÀµ¤Ç 2 ¤ÎÀ°¿ô¾è¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤º¡¢
.IR p_vaddr
¤Ï
.IR p_align
¤òË¡¤È¤·¤Æ
.IR p_offset
¤È¹çƱ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤
(ÌõÃí:¡Öp_vaddr mod p_align = p_offset mod p_align¡×¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤)¡£
.\" .El
.PP
.\"O A file's section header table lets one locate all the file's sections.
¥Õ¥¡¥¤¥ë¤Î¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ë¤Ï¡¢
Á´¤Æ¤Î¥Õ¥¡¥¤¥ë¥»¥¯¥·¥ç¥ó¤Î¾ì½ê¤¬µ­½Ò¤µ¤ì¤Æ¤¤¤ë¡£
.\"Osato:
.\"Osato: let ¤¬Ìõ¤·¤Å¤é¤¤¤Î¤Ç°ÕÌõµ¤Ì£¤Ë¤¹¤ë¡£
.\"Osato:
.\"O The
.\"O section header table is an array of
.\"O .I Elf32_Shdr
.\"O or
.\"O .I Elf64_Shdr
.\"O structures.
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ï
.I Elf32_Shdr
¹½Â¤ÂΤޤ¿¤Ï
.I Elf64_Shdr
¹½Â¤ÂΤÎÇÛÎó¤Ç¤¢¤ë¡£
.\"O The
.\"O ELF header's
.\"O .IR e_shoff
.\"O member gives the byte offset from the beginning of the file to the section
.\"O header table.
ELF ¥Ø¥Ã¥À¤Î
.IR e_shoff
¥á¥ó¥Ð¤Ï¥Õ¥¡¥¤¥ë¤ÎÀèƬ¤«¤é
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ø¤Î¥Ð¥¤¥È¥ª¥Õ¥»¥Ã¥È¤Ç¤¢¤ë¡£
.\"O .IR e_shnum
.\"O holds the number of entries the section header table contains.
.\"O .IR e_shentsize
.\"O holds the size in bytes of each entry.
.IR e_shnum
¤Ï¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤Ë´Þ¤Þ¤ì¤ë¥¨¥ó¥È¥ê¤Î¿ô¤òÊÝ»ý¤¹¤ë¡£
.IR e_shentsize
¤Ï³Æ¥¨¥ó¥È¥ê¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì) ¤òÊÝ»ý¤¹¤ë¡£
.PP
.\"O A section header table index is a subscript into this array.
.\"O Some section
.\"O header table indices are reserved.
.\"O An object file does not have sections for
.\"O these special indices:
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤Ï¡¢¤³¤ÎÇÛÎó¤ÎÍ×ÁǤò»ØÄꤹ¤ë¡£
¤¤¤¯¤Ä¤«¤Î¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤ÏͽÌ󤵤ì¤Æ¤¤¤ë¡£
¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Ï¡¢¤³¤ì¤é¤ÎÆÃÊ̤ʥ¤¥ó¥Ç¥Ã¥¯¥¹¤ËÂбþ¤¹¤ë
¥»¥¯¥·¥ç¥ó¤ò»ý¤¿¤Ê¤¤:
.\" .Bl -tag -width "SHN_LORESERVE"
.TP 14
.BR SHN_UNDEF
.\"O This value marks an undefined, missing, irrelevant or otherwise meaningless
.\"O section reference.
¤³¤ÎÃͤÏ̤ÄêµÁ¡¦ÉÔÌÀ¡¦Ìµ´Ø·¸¡¦Ìµ°ÕÌ£¤Ê¥»¥¯¥·¥ç¥ó»²¾È¤Î°õ¤È¤Ê¤ë¡£
.TP
.BR SHN_LORESERVE
.\"O This value specifies the lower bound of the range of reserved indices.
¤³¤ÎÃͤÏͽÌóºÑ¤ß¤Î¥¤¥ó¥Ç¥Ã¥¯¥¹Îΰè¤Î²¼¸Â¤ò»ØÄꤹ¤ë¡£
.TP
.BR SHN_LOPROC
.\"O Values greater than or equal to
.\"O .BR SHN_HIPROC
.\"O are reserved for processor-specific semantics.
¤³¤ÎÃͰʾå¤Ç
.BR SHN_HIPROC
°Ê²¼¤ÎÃÍ¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.TP
.BR SHN_HIPROC
.\"O Values less than or equal to
.\"O .BR SHN_LOPROC
.\"O are reserved for processor-specific semantics.
¤³¤ÎÃͰʲ¼¤Ç
.BR SHN_HIPROC
°Ê¾å¤ÎÃÍ¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.\"sato: SHN_{HI,LO}PROC ¤ÎÀâÌÀ¤Ï¡¢¸¶Ê¸¤Î´Ö°ã¤¤¤é¤·¤¤¡£
.TP
.BR SHN_ABS
.\"O This value specifies the absolute value for the corresponding reference.
¤³¤ÎÃͤÏÂбþ¤¹¤ë»²¾È¤ÎÀäÂÐÃͤò»ØÄꤹ¤ë¡£
.\"O For
.\"O example, a symbol defined relative to section number
.\"O .BR SHN_ABS
.\"O has an absolute value and is not affected by relocation.
Î㤨¤Ð¡¢¥»¥¯¥·¥ç¥óÈÖ¹æ
.BR SHN_ABS
¤Ë´ØÏ¢¤·¤ÆÄêµÁ¤µ¤ì¤Æ¤¤¤ë¥·¥ó¥Ü¥ë¤Ï¡¢
ÀäÂÐÃͤòÊÝ»ý¤·¤Æ¤¤¤ë¤Î¤Ç¡¢ºÆÇÛÃ֤˱ƶÁ¤µ¤ì¤Ê¤¤¡£
.\"nakano "relative to" ¤¬¤Á¤ç¤Ã¤ÈÌõ¤·¤Ë¤¯¤¤¡£
.\"nakano Íפ¹¤ë¤Ë SHN_ABS ¤Î¥»¥¯¥·¥ç¥ó¤Ë¤ÏÀäÂÐÃͤ¬ store ¤µ¤ì¤ë¡¢
.\"nakano ¸å½Ò¤Î SHN_COMMON ¤Ë¤Ï global ÊÑ¿ô¤¬ store ¤µ¤ì¤ë¡¢
.\"nakano ¤È¤¤¤¦¤³¤È¤Ê¤Î¤Ç¤·¤ç¤¦¤¬¡£
.TP
.BR SHN_COMMON
.\"O Symbols defined relative to this section are common symbols, such as FORTRAN
.\"O COMMON or unallocated C external variables.
¤³¤Î¥»¥¯¥·¥ç¥ó¤Ë´ØÏ¢¤·¤ÆÄêµÁ¤µ¤ì¤Æ¤¤¤ë¥·¥ó¥Ü¥ë¤Ï¡¢
FORTRAN ¤Î COMMON ¤ä C ¤Î̤³ä¤êÅö¤Æ³°ÉôÊÑ¿ô¤Î¤è¤¦¤Ê¶¦ÄÌ¥·¥ó¥Ü¥ë¤Ç¤¢¤ë¡£
.TP
.BR SHN_HIRESERVE
.\"O This value specifies the upper bound of the range of reserved indices.
¤³¤ÎÃͤÏͽÌóºÑ¤ß¤Î¥¤¥ó¥Ç¥Ã¥¯¥¹Îΰè¤Î¾å¸Â¤ò»ØÄꤹ¤ë¡£
.\"O The
.\"O system reserves indices between
.\"O .BR SHN_LORESERVE
.\"O and
.\"O .BR SHN_HIRESERVE ,
.\"O inclusive.
¥·¥¹¥Æ¥à¤Ï
.BR SHN_LORESERVE
¤È
.BR SHN_HIRESERVE
¤ò´Þ¤àÈϰϤòͽÌ󤹤롣
.\"O The section header table does not contain entries for the
.\"O reserved indices.
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¤ÏͽÌ󤵤줿¥¤¥ó¥Ç¥Ã¥¯¥¹¤ËÂбþ¤¹¤ë¥¨¥ó¥È¥ê¤ò»ý¤¿¤Ê¤¤¡£
.\" .El
.PP
.\"O The section header has the following structure:
¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¤Ï°Ê²¼¤Î¹½Â¤ÂΤò»ý¤Ä:
.in +4n
.nf

typedef struct {
    uint32_t   sh_name;
    uint32_t   sh_type;
    uint32_t   sh_flags;
    Elf32_Addr sh_addr;
    Elf32_Off  sh_offset;
    uint32_t   sh_size;
    uint32_t   sh_link;
    uint32_t   sh_info;
    uint32_t   sh_addralign;
    uint32_t   sh_entsize;
} Elf32_Shdr;
.fi
.in
.in +4n
.nf

typedef struct {
    uint32_t   sh_name;
    uint32_t   sh_type;
    uint64_t   sh_flags;
    Elf64_Addr sh_addr;
    Elf64_Off  sh_offset;
    uint64_t   sh_size;
    uint32_t   sh_link;
    uint32_t   sh_info;
    uint64_t   sh_addralign;
    uint64_t   sh_entsize;
} Elf64_Shdr;
.fi
.in
.PP
.\"O No real differences exist between the 32-bit and 64-bit section headers.
32 ¥Ó¥Ã¥È¤È 64 ¥Ó¥Ã¥È¤Î¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¤Ë¤Ï¼ÂºÝ¤Î°ã¤¤¤Ï¤Ê¤¤¡£
.\" .Bl -tag -width "sh_addralign"
.TP 10
.IR sh_name
.\"O This member specifies the name of the section.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥¯¥·¥ç¥ó̾¤òÄê¤á¤ë¡£
.\"O Its value is an index
.\"O into the section header string table section, giving the location of
.\"O a null-terminated string.
¤³¤ÎÃͤϥ»¥¯¥·¥ç¥ó¥Ø¥Ã¥Àʸ»úÎó¥Æ¡¼¥Ö¥ë¥»¥¯¥·¥ç¥ó¤Î¥¤¥ó¥Ç¥Ã¥¯¥¹¤Ç¤¢¤ê¡¢
NULL ʸ»ú¤Ç½ªÃ¼¤µ¤ì¤¿Ê¸»úÎó¤Î¾ì½ê¤ò¼¨¤¹¡£
.TP
.IR sh_type
.\"O This member categorizes the section's contents and semantics.
¤³¤Î¥á¥ó¥Ð¤Ï¥»¥¯¥·¥ç¥ó¤ÎÆâÍƤȰÕÌ£¤¬´Þ¤Þ¤ì¤ë¥«¥Æ¥´¥ê¤ò¼¨¤¹¡£
.\" .Bl -tag -width "SHT_PROGBITS"
.RS 10
.TP 15
.BR SHT_NULL
.\"O This value marks the section header as inactive.
¤³¤ÎÃͤϥ»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¤¬ÉÔ³èÀ­¤Ç¤¢¤ë¤³¤È¤ò¼¨¤¹¡£
.\"O It does not
.\"O have an associated section.
¤³¤ì¤Ï´ØÏ¢¤¹¤ë¥»¥¯¥·¥ç¥ó¤ò»ý¤¿¤Ê¤¤¡£
.\"O Other members of the section header
.\"O have undefined values.
¤³¤Î¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¤Î¾¤Î¥á¥ó¥Ð¤Ï¡¢Ì¤ÄêµÁ¤ÎÃͤò»ý¤Ä¡£
.TP
.BR SHT_PROGBITS
.\"O This section holds information defined by the program, whose
.\"O format and meaning are determined solely by the program.
¤³¤Î¥»¥¯¥·¥ç¥ó¤Ï¥×¥í¥°¥é¥à¤Ë¤è¤êÄêµÁ¤µ¤ì¤ë¾ðÊó¤òÊÝ»ý¤¹¤ë¡£
¤³¤Î¾ðÊó¤Î·Á¼°¤È°ÕÌ£¤Ï¡¢¤Ò¤È¤¨¤Ë¥×¥í¥°¥é¥à¤Ë¤è¤Ã¤Æ·èÄꤵ¤ì¤ë¡£
.TP
.BR SHT_SYMTAB
.\"O This section holds a symbol table.
¤³¤Î¥»¥¯¥·¥ç¥ó¤Ï¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¤òÊÝ»ý¤¹¤ë¡£
.\"O Typically,
.\"O .BR SHT_SYMTAB
.\"O provides symbols for link editing, though it may also be used
.\"O for dynamic linking.
°ìÈ̤ˤÏ
.BR SHT_SYMTAB
¤Ï¥ê¥ó¥¯ÊÔ½¸¤Î¤¿¤á¤Î¥·¥ó¥Ü¥ë¤òÄ󶡤¹¤ë¤¬¡¢
ưŪ¥ê¥ó¥¯¤Ë¤â»È¤ï¤ì¤ë¡£
.\"O As a complete symbol table, it may contain
.\"O many symbols unnecessary for dynamic linking.
´°Á´¤Ê¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¤È¤·¤Æ¡¢Æ°Åª¥ê¥ó¥¯¤Ë¤ÏÉÔÍפÊ
¿¤¯¤Î¥·¥ó¥Ü¥ë¤òÊÝ»ý¤Ç¤­¤ë¡£
.\"O An object file can
.\"O also contain a
.\"O .BR SHT_DYNSYM
.\"O section.
¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤â
.BR SHT_DYNSYM
¥»¥¯¥·¥ç¥ó¤ò»ý¤Ä¤³¤È¤¬¤Ç¤­¤ë¡£
.TP
.BR SHT_STRTAB
.\"O This section holds a string table.
.\"O An object file may have multiple
.\"O string table sections.
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.TP
.BR SHT_RELA
.\"O This section holds relocation entries with explicit addends, such
.\"O as type
.\"O .IR Elf32_Rela
.\"O for the 32-bit class of object files.
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.\"O An object may have multiple
.\"O relocation sections.
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.TP
.BR SHT_HASH
.\"O This section holds a symbol hash table.
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.\"O An object participating in
.\"O dynamic linking must contain a symbol hash table.
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.\"O An object file may
.\"O have only one hash table.
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.TP
.BR SHT_DYNAMIC
.\"O This section holds information for dynamic linking.
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.\"O An object file may
.\"O have only one dynamic section.
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.TP
.BR SHT_NOTE
.\"O This section holds information that marks the file in some way.
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.TP
.BR SHT_NOBITS
.\"O A section of this type occupies no space in the file but otherwise
.\"O resembles
.\"O .BR SHT_PROGBITS .
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.BR SHT_PROGBITS
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.\"O Although this section contains no bytes, the
.\"O .IR sh_offset
.\"O member contains the conceptual file offset.
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.IR sh_offset
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.TP
.BR SHT_REL
.\"O This section holds relocation offsets without explicit addends, such
.\"O as type
.\"O .IR Elf32_Rel
.\"O for the 32-bit class of object files.
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.\"O An object file may have multiple
.\"O relocation sections.
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.TP
.BR SHT_SHLIB
.\"O This section is reserved but has unspecified semantics.
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.TP
.BR SHT_DYNSYM
.\"O This section holds a minimal set of dynamic linking symbols.
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.\"O An
.\"O object file can also contain a
.\"O .BR SHT_SYMTAB
.\"O section.
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.BR SHT_SYMTAB
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.TP
.BR SHT_LOPROC
.\"O This value up to and including
.\"O .BR SHT_HIPROC
.\"O is reserved for processor-specific semantics.
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.BR SHT_HIPROC
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.TP
.BR SHT_HIPROC
.\"O This value down to and including
.\"O .BR SHT_LOPROC
.\"O is reserved for processor-specific semantics.
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.BR SHT_LOPROC
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.TP
.BR SHT_LOUSER
.\"O This value specifies the lower bound of the range of indices reserved for
.\"O application programs.
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.TP
.BR SHT_HIUSER
.\"O This value specifies the upper bound of the range of indices reserved for
.\"O application programs.
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.\"O Section types between
.\"O .BR SHT_LOUSER
.\"O and
.\"O .BR SHT_HIUSER
.\"O may be used by the application, without conflicting with current or future
.\"O system-defined section types.
.BR SHT_LOUSER
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.\" .El
.RE
.TP
.IR sh_flags
.\"O Sections support one-bit flags that describe miscellaneous attributes.
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.\"O If a flag bit is set in
.\"O .IR sh_flags ,
.\"O the attribute is
.\"O "on"
.\"O for the section.
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.\"O Otherwise, the attribute is
.\"O "off"
.\"O or does not apply.
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.\"O Undefined attributes are set to zero.
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.\" .Bl -tag -width "SHF_EXECINSTR" -compact
.RS 10
.TP 15
.BR SHF_WRITE
.\"O This section contains data that should be writable during process
.\"O execution.
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.TP
.BR SHF_ALLOC
.\"O This section occupies memory during process execution.
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.\"O Some control
.\"O sections do not reside in the memory image of an object file.
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.\"O This
.\"O attribute is off for those sections.
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.TP
.BR SHF_EXECINSTR
.\"O This section contains executable machine instructions.
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.TP
.BR SHF_MASKPROC
.\"O All bits included in this mask are reserved for processor-specific
.\"O semantics.
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.RE
.\" .El
.TP
.IR sh_addr
.\"O If this section appears in the memory image of a process, this member
.\"O holds the address at which the section's first byte should reside.
.\"O Otherwise, the member contains zero.
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.TP
.IR sh_offset
.\"O This member's value holds the byte offset from the beginning of the file
.\"O to the first byte in the section.
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.\"O One section type,
.\"O .BR SHT_NOBITS ,
.\"O occupies no space in the file, and its
.\"O .BR sh_offset
.\"O member locates the conceptual placement in the file.
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.IR sh_offset
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.\"nakano conceptual placement ¤È¤Ï¡©
.TP
.IR sh_size
.\"O This member holds the section's size in bytes.
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.\"O Unless the section type
.\"O is
.\"O .BR SHT_NOBITS ,
.\"O the section occupies
.\"O .IR sh_size
.\"O bytes in the file.
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.IR sh_size
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.\"O A section of type
.\"O .BR SHT_NOBITS
.\"O may have a nonzero size, but it occupies no space in the file.
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.TP
.IR sh_link
.\"O This member holds a section header table index link, whose interpretation
.\"O depends on the section type.
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.TP
.IR sh_info
.\"O This member holds extra information, whose interpretation depends on the
.\"O section type.
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.TP
.IR sh_addralign
.\"O Some sections have address alignment constraints.
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.\"O If a section holds a
.\"O doubleword, the system must ensure doubleword alignment for the entire
.\"O section.
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¥·¥¹¥Æ¥à¤ÏÁ´¤Æ¤Î¥»¥¯¥·¥ç¥ó¤Ë¤Ä¤¤¤ÆÇÜŸì¤ÎÇÛÃÖ¤òÊݾڤ·¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.\"O That is, the value of
.\"O .IR sh_addr
.\"O must be congruent to zero, modulo the value of
.\"O .BR sh_addralign .
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.\"O Only zero and positive integral powers of two are allowed.
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.\"O Values of zero
.\"O or one mean the section has no alignment constraints.
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.TP
.IR sh_entsize
.\"O Some sections hold a table of fixed-sized entries, such as a symbol table.
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.\"O For such a section, this member gives the size in bytes for each entry.
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.\"O This member contains zero if the section does not hold a table of
.\"O fixed-size entries.
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.\" .El
.PP
.\"O Various sections hold program and control information:
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.\" .Bl -tag -width ".shstrtab"
.TP 10
.IR .bss
.\"O This section holds uninitialized data that contributes to the program's
.\"O memory image.
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.\"Osato:
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.\"O By definition, the system initializes the data with zeros
.\"O when the program begins to run.
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.\"O This section is of type
.\"O .BR SHT_NOBITS .
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.\"O The attribute types are
.\"O .BR SHF_ALLOC
.\"O and
.\"O .BR SHF_WRITE .
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.TP
.IR .comment
.\"O This section holds version control information.
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.\"O This section is of type
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.\"O No attribute types are used.
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.IR .ctors
.\"O This section holds initialized pointers to the C++ constructor functions.
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.\"O This section is of type
.\"O .BR SHT_PROGBITS .
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.\"O The attribute types are
.\"O .BR SHF_ALLOC
.\"O and
.\"O .BR SHF_WRITE .
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.TP
.IR .data
.\"O This section holds initialized data that contribute to the program's
.\"O memory image.
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.\"O This section is of type
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.\"O The attribute types are
.\"O .BR SHF_ALLOC
.\"O and
.\"O .BR SHF_WRITE .
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.TP
.IR .data1
.\"O This section holds initialized data that contribute to the program's
.\"O memory image.
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.\"O This section is of type
.\"O .BR SHT_PROGBITS .
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.\"O The attribute types are
.\"O .BR SHF_ALLOC
.\"O and
.\"O .BR SHF_WRITE .
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.TP
.IR .debug
.\"O This section holds information for symbolic debugging.
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.\"O The contents
.\"O are unspecified.
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.\"O This section is of type
.\"O .BR SHT_PROGBITS .
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.\"O No attribute types are used.
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.IR .dtors
.\"O This section holds initialized pointers to the C++ destructor functions.
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.\"O This section is of type
.\"O .BR SHT_PROGBITS .
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.\"O The attribute types are
.\"O .BR SHF_ALLOC
.\"O and
.\"O .BR SHF_WRITE .
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.TP
.IR .dynamic
.\"O This section holds dynamic linking information.
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.\"O The section's attributes
.\"O will include the
.\"O .BR SHF_ALLOC
.\"O bit.
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.\"O Whether the
.\"O .BR SHF_WRITE
.\"O bit is set is processor-specific.
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.\"O This section is of type
.\"O .BR SHT_DYNAMIC .
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.\"O See the attributes above.
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.TP
.IR .dynstr
.\"O This section holds strings needed for dynamic linking, most commonly
.\"O the strings that represent the names associated with symbol table entries.
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.IR .dynsym
.\"O This section holds the dynamic linking symbol table.
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.IR .fini
.\"O This section holds executable instructions that contribute to the process
.\"O termination code.
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.\"O When a program exits normally the system arranges to
.\"O execute the code in this section.
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.IR .gnu.version
.\"O This section holds the version symbol table, an array of
.\"O .I ElfN_Half
.\"O elements.
.\"O This section is of type
.\"O .BR SHT_GNU_versym .
.\"O The attribute type used is
.\"O .BR SHF_ALLOC .
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.\"O This section holds the version symbol definitions, a table of
.\"O .I ElfN_Verdef
.\"O structures.
.\"O This section is of type
.\"O .BR SHT_GNU_verdef .
.\"O The attribute type used is
.\"O .BR SHF_ALLOC .
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.IR .gnu.version_r
.\"O This section holds the version symbol needed elements, a table of
.\"O .I ElfN_Verneed
.\"O structures.
.\"O This section is of
.\"O type
.\"O .BR SHT_GNU_versym .
.\"O The attribute type used is
.\"O .BR SHF_ALLOC .
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.IR .got
.\"O This section holds the global offset table.
.\"O This section is of type
.\"O .BR SHT_PROGBITS .
.\"O The attributes are processor-specific.
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.IR .hash
.\"O This section holds a symbol hash table.
.\"O This section is of type
.\"O .BR SHT_HASH .
.\"O The attribute used is
.\"O .BR SHF_ALLOC .
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.IR .init
.\"O This section holds executable instructions that contribute to the process
.\"O initialization code.
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.\"O When a program starts to run the system arranges to
.\"O execute the code in this section before calling the main program entry point.
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.IR .interp
.\"O This section holds the pathname of a program interpreter.
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.\"O If the file has
.\"O a loadable segment that includes the section, the section's attributes will
.\"O include the
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.\"O bit.
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.\"O Otherwise, that bit will be off.
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.IR .line
.\"O This section holds line number information for symbolic debugging, which
.\"O describes the correspondence between the program source and the machine code.
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.IR .note
.\"O This section holds information in the
.\"O "Note Section"
.\"O format described below.
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.\"O native executables usually contain a
.\"O .IR .note.openbsd.ident
.\"O section to identify themselves, for the kernel to bypass any compatibility
.\"O ELF binary emulation tests when loading the file.
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.IR .note.GNU-stack
.\"O This section is used in Linux object files for declaring stack attributes.
.\"O This section is of type
.\"O .BR SHT_PROGBITS .
.\"O The only attribute used is
.\"O .BR SHF_EXECINSTR .
.\"O This indicates to the GNU linker that the object file requires an
.\"O executable stack.
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¤À¤±¤Ç¤¢¤ë¡£¤³¤Î°À­¤Ï GNU ¥ê¥ó¥«¤ËÂФ·¤Æ
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.IR .plt
.\"O This section holds the procedure linkage table.
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.IR .relNAME
.\"O This section holds relocation information as described below.
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.\"O If the file
.\"O has a loadable segment that includes relocation, the section's attributes
.\"O will include the
.\"O .BR SHF_ALLOC
.\"O bit.
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.\"O Otherwise the bit will be off.
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.\"O "NAME"
.\"O is supplied by the section to which the relocations apply.
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.\"O Thus a relocation
.\"O section for
.\"O .BR .text
.\"O normally would have the name
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.\"O This section holds relocation information as described below.
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.\"O If the file
.\"O has a loadable segment that includes relocation, the section's attributes
.\"O will include the
.\"O .BR SHF_ALLOC
.\"O bit.
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.\"O normally would have the name
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.IR .rodata
.\"O This section holds read-only data that typically contributes to a
.\"O nonwritable segment in the process image.
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.IR .rodata1
.\"O This section holds read-only data that typically contributes to a
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.IR .shstrtab
.\"O This section holds section names.
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.IR .strtab
.\"O This section holds strings, most commonly the strings that represent the
.\"O names associated with symbol table entries.
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.\"O If the file has a loadable
.\"O segment that includes the symbol string table, the section's attributes
.\"O will include the
.\"O .BR SHF_ALLOC
.\"O bit.
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.\"O This section holds a symbol table.
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.\"O that includes the symbol table, the section's attributes will include
.\"O the
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.\"O bit.
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.IR .text
.\"O This section holds the
.\"O "text",
.\"O or executable instructions, of a program.
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.\"O String table sections hold null-terminated character sequences, commonly
.\"O called strings.
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.\"O The object file uses these strings to represent symbol
.\"O and section names.
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.\"O table section.
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.\"O a null byte (\(aq\\0\(aq).
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.\"O hold a null byte, ensuring null termination for all strings.
ƱÍͤËʸ»úÎó¥Æ¡¼¥Ö¥ë¤ÎºÇ¸å¤Î¥Ð¥¤¥È¤â NULL ʸ»ú¤òÊÝ»ý¤¹¤ë¤ÈÄêµÁ¤µ¤ì¤Æ¤¤¤ë¡£
¤³¤ì¤ÏÁ´¤Æ¤Îʸ»úÎó¤¬ NULL ¥Ð¥¤¥È¤Ç½ªÃ¼¤µ¤ì¤Æ¤¤¤ë¤³¤È¤òÊݾڤ¹¤ë¤¿¤á¤Ç¤¢¤ë¡£
.PP
.\"O An object file's symbol table holds information needed to locate and
.\"O relocate a program's symbolic definitions and references.
.\"O A symbol table
.\"O index is a subscript into this array.
¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Î¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¤Ï¡¢
¥×¥í¥°¥é¥à¤Î¥·¥ó¥Ü¥ëÄêµÁ¤È»²¾È¤òÇÛÃÖ¤Þ¤¿¤ÏºÆÇÛÃÖ¤¹¤ë¤Î¤Ë
ɬÍפʾðÊó¤òÊÝ»ý¤¹¤ë¡£
.in +4n
.nf

typedef struct {
    uint32_t      st_name;
    Elf32_Addr    st_value;
    uint32_t      st_size;
    unsigned char st_info;
    unsigned char st_other;
    uint16_t      st_shndx;
} Elf32_Sym;
.fi
.in
.in +4n
.nf

typedef struct {
    uint32_t      st_name;
    unsigned char st_info;
    unsigned char st_other;
    uint16_t      st_shndx;
    Elf64_Addr    st_value;
    uint64_t      st_size;
} Elf64_Sym;
.fi
.in
.PP
.\"O The 32-bit and 64-bit versions have the same members, just in a different
.\"O order.
32 ¥Ó¥Ã¥ÈÈÇ¤È 64 ¥Ó¥Ã¥ÈÈǤÏƱ¤¸¥á¥ó¥Ð¤ò»ý¤Á¡¢Ã±¤Ë½çÈÖ¤¬°Û¤Ê¤ë¤À¤±¤Ç¤¢¤ë¡£
.\" .Bl -tag -width "st_value"
.TP 10
.IR st_name
.\"O This member holds an index into the object file's symbol string table,
.\"O which holds character representations of the symbol names.
¤³¤Î¥á¥ó¥Ð¤Ï¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Î¥·¥ó¥Ü¥ëʸ»úÎó¥Æ¡¼¥Ö¥ë¤Î
¥¤¥ó¥Ç¥Ã¥¯¥¹¤òÊÝ»ý¤¹¤ë¡£
¥·¥ó¥Ü¥ëʸ»úÎó¥Æ¡¼¥Ö¥ë¤Ï¥·¥ó¥Ü¥ë̾¤Îʸ»úɽ¸½¤òÊÝ»ý¤¹¤ë¡£
.\"O If the value
.\"O is nonzero, it represents a string table index that gives the symbol
.\"O name.
¤³¤ÎÃͤ¬ 0 ¤Ç¤Ê¤¤¾ì¹ç¡¢¥·¥ó¥Ü¥ë̾¤òÆÀ¤ë¤¿¤á¤Îʸ»ú¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤òɽ¤¹¡£
.\"O Otherwise, the symbol table has no name.
¤½¤ì°Ê³°¤Î¾ì¹ç¡¢¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¤Ï̾Á°¤ò»ý¤¿¤Ê¤¤¡£
.TP
.IR st_value
.\"O This member gives the value of the associated symbol.
¤³¤Î¥á¥ó¥Ð¤Ï´ØÏ¢¤Å¤±¤é¤ì¤¿¥·¥ó¥Ü¥ë¤ÎÃͤòɽ¤¹¡£
.TP
.IR st_size
.\"O Many symbols have associated sizes.
.\"O This member holds zero if the symbol
.\"O has no size or an unknown size.
¿¤¯¤Î¥·¥ó¥Ü¥ë¤Ë¤Ï¤½¤ì¤Ë´ØÏ¢¤Å¤±¤é¤ì¤¿¥µ¥¤¥º¤¬¤¢¤ë¡£
¥·¥ó¥Ü¥ë¤¬¥µ¥¤¥º¤ò»ý¤¿¤Ê¤¤¾ì¹ç¡¢¤Þ¤¿¤Ï¥µ¥¤¥º¤¬ÉÔÌÀ¤Ê¾ì¹ç¡¢
¤³¤Î¥á¥ó¥Ð¤Ï 0 ¤Ç¤¢¤ë¡£
.TP
.IR st_info
.\"O This member specifies the symbol's type and binding attributes:
¤³¤Î¥á¥ó¥Ð¤Ï¥·¥ó¥Ü¥ë¤Î¥¿¥¤¥×¤È¥Ð¥¤¥ó¥Ç¥£¥ó¥° (binding) °À­¤ò»ØÄꤹ¤ë:
.RS 10
.TP 12
.BR STT_NOTYPE
.\"O The symbol's type is not defined.
¥·¥ó¥Ü¥ë¤Î¥¿¥¤¥×¤¬ÄêµÁ¤µ¤ì¤Æ¤¤¤Ê¤¤¡£
.TP
.BR STT_OBJECT
.\"O The symbol is associated with a data object.
¥·¥ó¥Ü¥ë¤Ï¥Ç¡¼¥¿¥ª¥Ö¥¸¥§¥¯¥È¤Ë´ØÏ¢¤Å¤±¤é¤ì¤Æ¤¤¤ë¡£
.TP
.BR STT_FUNC
.\"O The symbol is associated with a function or other executable code.
¥·¥ó¥Ü¥ë¤Ï´Ø¿ô¤Þ¤¿¤Ï¤½¤Î¾¤Î¼Â¹Ô¥³¡¼¥É¤Ë´ØÏ¢¤Å¤±¤é¤ì¤Æ¤¤¤ë¡£
.TP
.BR STT_SECTION
.\"O The symbol is associated with a section.
¥·¥ó¥Ü¥ë¤Ï¥»¥¯¥·¥ç¥ó¤Ë´ØÏ¢¤Å¤±¤é¤ì¤Æ¤¤¤ë¡£
.\"O Symbol table entries of
.\"O this type exist primarily for relocation and normally have
.\"O .BR STB_LOCAL
.\"O bindings.
¤³¤Î¥¿¥¤¥×¤Î¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¥¨¥ó¥È¥ê¤Ï¡¢
¼ç¤È¤·¤ÆºÆÇÛÃ֤Τ¿¤á¤Ë¸ºß¤·¡¢Ä̾ï¤Ï
.BR STB_LOCAL
¥Ð¥¤¥ó¥Ç¥£¥ó¥°¤ò»ý¤Ä¡£
.TP
.BR STT_FILE
.\"O By convention, the symbol's name gives the name of the source file
.\"O associated with the object file.
´·Îã¤È¤·¤Æ¡¢¥·¥ó¥Ü¥ë¤Î̾Á°¤Ï
¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Ë´ØÏ¢¤Å¤±¤é¤ì¤¿¥½¡¼¥¹¥Õ¥¡¥¤¥ë¤Î̾Á°¤ò»ØÄꤹ¤ë¡£
.\"O A file symbol has
.\"O .BR STB_LOCAL
.\"O bindings, its section index is
.\"O .BR SHN_ABS ,
.\"O and it precedes the other
.\"O .BR STB_LOCAL
.\"O symbols of the file, if it is present.
¥Õ¥¡¥¤¥ë¥·¥ó¥Ü¥ë¤Ï
.BR STB_LOCAL
¥Ð¥¤¥ó¥Ç¥£¥ó¥°¤ò»ý¤Á¡¢¤½¤Î¥»¥¯¥·¥ç¥ó¥¤¥ó¥Ç¥Ã¥¯¥¹¤Ï
.BR SHN_ABS
¤Ç¤¢¤ë¡£
¥Õ¥¡¥¤¥ë¥·¥ó¥Ü¥ë¤Ï¡¢¥Õ¥¡¥¤¥ë¤Ë¾¤Î
.BR STB_LOCAL
¥·¥ó¥Ü¥ë¤¬¤¢¤ë¾ì¹ç¤Ï¡¢¤½¤ì¤è¤ê¤âÀè¤ËÍè¤ë¡£
.TP
.BR STT_LOPROC
.\"O This value up to and including
.\"O .BR STT_HIPROC
.\"O is reserved for processor-specific semantics.
¤³¤ÎÃͰʾå¤Ç
.BR STT_HIPROC
°Ê²¼¤ÎÈÏ°Ï¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.TP
.BR STT_HIPROC
.\"O This value down to and including
.\"O .BR STT_LOPROC
.\"O is reserved for processor-specific semantics.
¤³¤ÎÃͰʲ¼¤Ç
.BR STT_LOPROC
°Ê¾å¤ÎÈÏ°Ï¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.\" .El
.\" .Bl -tag -width "STB_GLOBAL"
.TP
.BR STB_LOCAL
.\"O Local symbols are not visible outside the object file containing their
.\"O definition.
¶É½êŪ¥·¥ó¥Ü¥ë¤Ï¤½¤ÎÄêµÁ¤ò´Þ¤à¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Î³°¤«¤é¤Ï¸«¤¨¤Ê¤¤¡£
.\"O Local symbols of the same name may exist in multiple files
.\"O without interfering with each other.
Ʊ¤¸Ì¾Á°¤Î¶É½êŪ¥·¥ó¥Ü¥ë¤Ï¡¢¤ª¸ß¤¤¤Ë±Æ¶Á¤ò¼õ¤±¤ë¤³¤È¤Ê¤¯¡¢
Ê£¿ô¤Î¥Õ¥¡¥¤¥ë¤Ë¸ºß¤Ç¤­¤ë¡£
.TP
.BR STB_GLOBAL
.\"O Global symbols are visible to all object files being combined.
.\"O One file's
.\"O definition of a global symbol will satisfy another file's undefined
.\"O reference to the same symbol.
Âç°èŪ¥·¥ó¥Ü¥ë¤Ï·ë¤Ó¤Ä¤±¤é¤ì¤Æ¤¤¤ëÁ´¤Æ¤Î¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤«¤é¸«¤¨¤ë¡£
1 ¤Ä¤Î¥Õ¥¡¥¤¥ë¤ÇÂç°èŪ¥·¥ó¥Ü¥ë¤¬ÄêµÁ¤µ¤ì¤Æ¤¤¤¿¤é¡¢
¾¤Î¥Õ¥¡¥¤¥ë¤Ç¤ÏƱ¤¸¥·¥ó¥Ü¥ë¤Ø¤Î»²¾È¤Ï̤ÄêµÁ¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.TP
.BR STB_WEAK
.\"O Weak symbols resemble global symbols, but their definitions have lower
.\"O precedence.
¼å¥·¥ó¥Ü¥ë¤ÏÂç°èŪ¥·¥ó¥Ü¥ë¤Ë»÷¤Æ¤¤¤ë¤¬¡¢¤½¤ÎÄêµÁ¤ÏÍ¥ÀèÅÙ¤¬Ä㤤¡£
.TP
.BR STB_LOPROC
.\"O This value up to and including
.\"O .BR STB_HIPROC
.\"O is reserved for processor-specific semantics.
¤³¤ÎÃͰʾå¤Ç
.BR STB_HIPROC
°Ê²¼¤ÎÈÏ°Ï¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.TP
.BR STB_HIPROC
.\"O This value down to and including
.\"O .BR STB_LOPROC
.\"O is reserved for processor-specific semantics.
¤³¤ÎÃͰʲ¼¤Ç
.BR STB_LOPROC
°Ê¾å¤ÎÈÏ°Ï¤Ï¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤ËͽÌ󤵤ì¤Æ¤¤¤ë¡£
.IP
.\"O There are macros for packing and unpacking the binding and type fields:
¥Ð¥¤¥ó¥Ç¥£¥ó¥°¤È¥¿¥¤¥×¥Õ¥£¡¼¥ë¥É¤ò
¥Ñ¥Ã¥¯¤·¤¿¤ê¥¢¥ó¥Ñ¥Ã¥¯¤·¤¿¤ê¤¹¤ë¥Þ¥¯¥í¤¬¤¢¤ë:
.IP
.BR ELF32_ST_BIND (info)
.\"O or
¤Þ¤¿¤Ï
.BR ELF64_ST_BIND (info)
.\"O extract a binding from an
.\"O .I st_info
.\"O value.
.I st_info
¤ÎÃͤ«¤é¥Ð¥¤¥ó¥Ç¥£¥ó¥°¤ò¼è¤ê½Ð¤¹¡£
.IP
.BR ELF32_ST_TYPE (info)
.\"O or
¤Þ¤¿¤Ï
.BR ELF64_ST_TYPE (info)
.br
.\"O extract a type from an
.\"O .I st_info
.\"O value.
.I st_info
¤ÎÃͤ«¤é¥¿¥¤¥×¤ò¼è¤ê½Ð¤¹¡£
.IP
.BR ELF32_ST_INFO "(bind, type)"
.\"O or
¤Þ¤¿¤Ï
.BR ELF64_ST_INFO "(bind, type)"
.br
.\"O convert a binding and a type into an
.\"O .I st_info
.\"O value.
¥Ð¥¤¥ó¥Ç¥£¥ó¥°¤È¥¿¥¤¥×¤ò
.I st_info
¤ÎÃͤËÊÑ´¹¤¹¤ë¡£
.RE
.\" .El
.TP
.IR st_other
.\"O This member defines the symbol visibility.
¤³¤Î¥á¥ó¥Ð¤Ï¥·¥ó¥Ü¥ë¤Î visibility (¸«¤¨¤ëÈÏ°Ï) ¤òµ¬Äꤹ¤ë¡£
.\" .Bl -tag -width "STV_PROTECTED"
.RS 10
.TP 16
.PD 0
.BR STV_DEFAULT
.\"O Default symbol visibility rules.
¥Ç¥Õ¥©¥ë¥È¤Î¥·¥ó¥Ü¥ë visibility ¥ë¡¼¥ë¡£
.TP
.BR STV_INTERNAL
.\"O Processor-specific hidden class.
¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î±£¤·¥¯¥é¥¹¡£
.TP
.BR STV_HIDDEN
.\"O Symbol is unavailable in other modules.
¥·¥ó¥Ü¥ë¤Ï¾¤Î¥â¥¸¥å¡¼¥ë¤«¤é¤ÏÍøÍѤǤ­¤Ê¤¤¡£
.TP
.BR STV_PROTECTED
.\"O Not preemptible, not exported.
²£¼è¤ê¤Ç¤­¤º (not preemptible)¡¢¸ø³«¤µ¤ì¤Ê¤¤¡£
.PD
.PP
.\"O There are macros for extracting the visibility type:
visibility ¼ïÊ̤òÃê½Ð¤¹¤ë¤¿¤á¤Î¥Þ¥¯¥í¤¬¤¢¤ë¡£
.PP
.\"O .BR ELF32_ST_VISIBILITY (other)
.\"O or
.\"O .BR ELF64_ST_VISIBILITY (other)
.BR ELF32_ST_VISIBILITY (other)
¤Þ¤¿¤Ï
.BR ELF64_ST_VISIBILITY (other)
.RE
.\" .El
.TP
.IR st_shndx
.\"O Every symbol table entry is
.\"O "defined"
.\"O in relation to some section.
³Æ¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¥¨¥ó¥È¥ê¤Ï¡¢¤¤¤¯¤Ä¤«¤Î¥»¥¯¥·¥ç¥ó¤Ë´ØÏ¢¤·¤Æ
"ÄêµÁ¤µ¤ì¤Æ¤¤¤ë"¡£
.\"O This member holds the relevant section
.\"O header table index.
¤³¤Î¥á¥ó¥Ð¤Ï´ØÏ¢¤¹¤ë¥»¥¯¥·¥ç¥ó¥Ø¥Ã¥À¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤òÊÝ»ý¤¹¤ë¡£
.\" .El
.PP
.\"O Relocation is the process of connecting symbolic references with
.\"O symbolic definitions.
ºÆÇÛÃ֤ϥ·¥ó¥Ü¥ë»²¾È¤È¥·¥ó¥Ü¥ëÄêµÁ¤ò·ë¹ç¤¹¤ë¥×¥í¥»¥¹¤Ç¤¢¤ë¡£
.\"O Relocatable files must have information that
.\"O describes how to modify their section contents, thus allowing executable
.\"O and shared object files to hold the right information for a process's
.\"O program image.
ºÆÇÛÃÖ²Äǽ¥Õ¥¡¥¤¥ë¤Ï¥»¥¯¥·¥ç¥ó¤ÎÆâÍƤò¤É¤Î¤è¤¦¤Ë½¤Àµ¤¹¤ë¤«¤Ë´Ø¤¹¤ë
¾ðÊó¤ò»ý¤¿¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
¤³¤ì¤Ë¤è¤ê¡¢¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¤È¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤Ï
¥×¥í¥»¥¹¤Î¥×¥í¥°¥é¥à¥¤¥á¡¼¥¸¤Ë¤Ä¤¤¤Æ¤ÎÀµ¤·¤¤¾ðÊó¤ò»ý¤Ä¤³¤È¤¬¤Ç¤­¤ë¡£
.\"O Relocation entries are these data.
ºÆÇÛÃÖ¥¨¥ó¥È¥ê¤Ï°Ê²¼¤Î¤è¤¦¤Ê¥Ç¡¼¥¿¤Ç¤¢¤ë¡£
.PP
.\"O Relocation structures that do not need an addend:
²Ã¿ô¤òɬÍפȤ·¤Ê¤¤ºÆÇÛÃÖ¹½Â¤ÂΡ£
.in +4n
.nf

typedef struct {
    Elf32_Addr r_offset;
    uint32_t   r_info;
} Elf32_Rel;
.fi
.in
.in +4n
.nf

typedef struct {
    Elf64_Addr r_offset;
    uint64_t   r_info;
} Elf64_Rel;
.fi
.in
.PP
.\"O Relocation structures that need an addend:
²Ã¿ô¤òɬÍפȤ¹¤ëºÆÇÛÃÖ¹½Â¤ÂΡ£
.in +4n
.nf

typedef struct {
    Elf32_Addr r_offset;
    uint32_t   r_info;
    int32_t    r_addend;
} Elf32_Rela;
.fi
.in
.in +4n
.nf

typedef struct {
    Elf64_Addr r_offset;
    uint64_t   r_info;
    int64_t    r_addend;
} Elf64_Rela;
.fi
.in
.\" .Bl -tag -width "r_offset"
.TP 12
.IR r_offset
.\"O This member gives the location at which to apply the relocation action.
¤³¤Î¥á¥ó¥Ð¤ÏºÆÇÛÃÖÆ°ºî¤¬Å¬ÍѤµ¤ì¤ë°ÌÃÖ¤òÍ¿¤¨¤ë¡£
.\"O For a relocatable file, the value is the byte offset from the beginning
.\"O of the section to the storage unit affected by the relocation.
ºÆÇÛÃÖ²Äǽ¥Õ¥¡¥¤¥ë¤Î¾ì¹ç¡¢¤³¤ÎÃͤϥ»¥¯¥·¥ç¥ó¤ÎÀèƬ¤«¤é
ºÆÇÛÃ֤DZƶÁ¤ò¼õ¤±¤ë³ÊǼñ°Ì (storage unit) ¤Þ¤Ç¤Î¥Ð¥¤¥È¥ª¥Õ¥»¥Ã¥È¤Ç¤¢¤ë¡£
.\"O For an
.\"O executable file or shared object, the value is the virtual address of
.\"O the storage unit affected by the relocation.
¼Â¹Ô²Äǽ¥Õ¥¡¥¤¥ë¤Þ¤¿¤Ï¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¤Î¾ì¹ç¡¢
¤³¤ÎÃͤϺÆÇÛÃ֤DZƶÁ¤ò¼õ¤±¤ë³ÊǼñ°Ì¤Î²¾ÁÛ¥¢¥É¥ì¥¹¤Ç¤¢¤ë¡£
.TP
.IR r_info
.\"O This member gives both the symbol table index with respect to which the
.\"O relocation must be made and the type of relocation to apply.
¤³¤Î¥á¥ó¥Ð¤Ï¡¢ºÆÇÛÃÖ¤¬¹Ô¤ï¤ì¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤È¡¢
ŬÍѤµ¤ì¤ëºÆÇÛÃ֤Υ¿¥¤¥×¤ÎξÊý¤òÍ¿¤¨¤ë¡£
.\"O Relocation
.\"O types are processor specific.
ºÆÇÛÃÖ¥¿¥¤¥×¤Ï¥×¥í¥»¥Ã¥µËè¤Ë°Û¤Ê¤ë¡£
.\"O When the text refers to a relocation
.\"O entry's relocation type or symbol table index, it means the result of
.\"O applying
.\"O .BR ELF_[32|64]_R_TYPE
.\"O or
.\"O .BR ELF[32|64]_R_SYM ,
.\"O respectively, to the entry's
.\"O .IR r_info
.\"O member.
¥Æ¥­¥¹¥È¤¬ºÆÇÛÃÖ¥¨¥ó¥È¥ê¤ÎºÆÇÛÃÖ¥¿¥¤¥×
¤Þ¤¿¤Ï¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¥¤¥ó¥Ç¥Ã¥¯¥¹¤ò»²¾È¤·¤Æ¤¤¤ë¾ì¹ç¡¢
¤½¤ì¤¾¤ì¥¨¥ó¥È¥ê¤Î
.IR r_info
¥á¥ó¥Ð¤ËÂФ·¤Æ¡¢¤½¤ì¤¾¤ì
.BR ELF_[32|64]_R_TYPE
¤È
.BR ELF[32|64]_R_SYM
¤òŬÍѤ·¤¿·ë²Ì¤ò°ÕÌ£¤¹¤ë¡£
.TP
.IR r_addend
.\"O This member specifies a constant addend used to compute the value to be
.\"O stored into the relocatable field.
¤³¤Î¥á¥ó¥Ð¤ÏÄê¿ô¤Î²Ã¿ô¤ò»ØÄꤹ¤ë¡£
¤³¤Î²Ã¿ô¤ÏºÆÇÛÃÖ²Äǽ¥Õ¥£¡¼¥ë¥É¤Ë³ÊǼ¤µ¤ì¤ëÃͤò·×»»¤¹¤ë¤¿¤á¤Ë»È¤ï¤ì¤ë¡£
.\" .El
.PP
.\"O The .dynamic section contains a series of structures that hold relevant
.\"O dynamic linking information.
.\"O The d_tag member controls the interpretation
.\"O of d_un.
\&.dynamic ¥»¥¯¥·¥ç¥ó¤Ï¡¢´ØÏ¢¤¹¤ëưŪ¥ê¥ó¥¯¾ðÊó¤òÊÝ»ý¤·¤Æ¤¤¤ë
°ìÏ¢¤Î¹½Â¤ÂΤòÊÝ»ý¤¹¤ë¡£
d_tag ¥á¥ó¥Ð¤Ï d_un ¤Î²ò¼á¤òÀ©¸æ¤¹¤ë¡£
.in +4n
.nf

typedef struct {
    Elf32_Sword    d_tag;
    union {
        Elf32_Word d_val;
        Elf32_Addr d_ptr;
    } d_un;
} Elf32_Dyn;
extern Elf32_Dyn _DYNAMIC[];
.fi
.in
.in +4n
.nf

typedef struct {
    Elf64_Sxword    d_tag;
    union {
        Elf64_Xword d_val;
        Elf64_Addr  d_ptr;
    } d_un;
} Elf64_Dyn;
extern Elf64_Dyn _DYNAMIC[];
.fi
.in
.\" .Bl -tag -width "d_tag"
.TP 10
.IR d_tag
.\"O This member may have any of the following values:
¤³¤Î¥á¥ó¥Ð¤Ï°Ê²¼¤ÎÃͤò»ý¤Ä¤³¤È¤¬¤Ç¤­¤ë:
.\" .Bl -tag -width "DT_SYMBOLIC"
.RS 10
.TP 12
.BR DT_NULL
.\"O Marks end of dynamic section
ưŪ¥»¥¯¥·¥ç¥ó¤Î½ª¤ê¤Î¥Þ¡¼¥¯
.TP
.BR DT_NEEDED
.\"O String table offset to name of a needed library
ɬÍפʥ饤¥Ö¥é¥ê¤Î̾Á°¤Ø¤Îʸ»úÎó¥Æ¡¼¥Ö¥ë¥ª¥Õ¥»¥Ã¥È
.TP
.BR DT_PLTRELSZ
.\"O Size in bytes of PLT relocs
PLT ºÆÇÛÃÖ (reloc) ¥Æ¡¼¥Ö¥ë¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_PLTGOT
.\"O Address of PLT and/or GOT
PLT ¤È GOT (¤Þ¤¿¤Ï²¿¤ì¤«°ìÊý) ¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_HASH
.\"O Address of symbol hash table
¥·¥ó¥Ü¥ë¥Ï¥Ã¥·¥å¥Æ¡¼¥Ö¥ë¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_STRTAB
.\"O Address of string table
ʸ»úÎó¥Æ¡¼¥Ö¥ë¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_SYMTAB
.\"O Address of symbol table
¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_RELA
.\"O Address of Rela relocs table
Rela ºÆÇÛÃ֥ơ¼¥Ö¥ë¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_RELASZ
.\"O Size in bytes of Rela table
Rela ¥Æ¡¼¥Ö¥ë¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_RELAENT
.\"O Size in bytes of a Rela table entry
Rela ¥Æ¡¼¥Ö¥ë¥¨¥ó¥È¥ê¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_STRSZ
.\"O Size in bytes of string table
ʸ»úÎó¥Æ¡¼¥Ö¥ë¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_SYMENT
.\"O Size in bytes of a symbol table entry
¥·¥ó¥Ü¥ë¥Æ¡¼¥Ö¥ë¥¨¥ó¥È¥ê¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_INIT
.\"O Address of the initialization function
½é´ü²½´Ø¿ô¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_FINI
.\"O Address of the termination function
½ªÎ»´Ø¿ô¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_SONAME
.\"O String table offset to name of shared object
¶¦Í­¥ª¥Ö¥¸¥§¥¯¥È¤Î̾Á°¤Ø¤Îʸ»úÎó¥Æ¡¼¥Ö¥ë¥ª¥Õ¥»¥Ã¥È
.TP
.BR DT_RPATH
.\"O String table offset to library search path (deprecated)
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.TP
.BR DT_SYMBOLIC
.\"O Alert linker to search this shared object before the executable for symbols
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.BR DT_REL
.\"O Address of Rel relocs table
Rel ºÆÇÛÃ֥ơ¼¥Ö¥ë¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_RELSZ
.\"O Size in bytes of Rel table
Rel ¥Æ¡¼¥Ö¥ë¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_RELENT
.\"O Size in bytes of a Rel table entry
Rel ¥Æ¡¼¥Ö¥ë¥¨¥ó¥È¥ê¤Î¥µ¥¤¥º (¥Ð¥¤¥Èñ°Ì)
.TP
.BR DT_PLTREL
.\"O Type of reloc the PLT refers (Rela or Rel)
PLT ¤¬»²¾È¤¹¤ëºÆÇÛÃ֥ơ¼¥Ö¥ë¤Î¥¿¥¤¥× (Rela ¤Þ¤¿¤Ï Rel)
.TP
.BR DT_DEBUG
.\"O Undefined use for debugging
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.BR DT_TEXTREL
.\"O Absence of this indicates no relocs should apply to a nonwritable segment
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.TP
.BR DT_JMPREL
.\"O Address of reloc entries solely for the PLT
PLT ÀìÍѤκÆÇÛÃÖ¥¨¥ó¥È¥ê¤Î¥¢¥É¥ì¥¹
.TP
.BR DT_BIND_NOW
.\"O Instruct dynamic linker to process all relocs before transferring control to
.\"O the executable
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.BR DT_RUNPATH
.\"O String table offset to library search path
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.TP
.BR DT_LOPROC
.\"O Start of processor-specific semantics
¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤Î³«»Ï
.TP
.BR DT_HIPROC
.\"O End of processor-specific semantics
¥×¥í¥»¥Ã¥µ¸ÇÍ­¤Î°ÕÌ£¤Î½ªÎ»
.RE
.\" .El
.TP
.IR d_val
.\"O This member represents integer values with various interpretations.
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.TP
.IR d_ptr
.\"O This member represents program virtual addresses.
.\"O When interpreting
.\"O these addresses, the actual address should be computed based on the
.\"O original file value and memory base address.
.\"O Files do not contain
.\"O relocation entries to fixup these addresses.
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.TP
.IR _DYNAMIC
.\"O Array containing all the dynamic structures in the .dynamic section.
.\"O This is automatically populated by the linker.
\&.dynamic ¥»¥¯¥·¥ç¥ó¤Ë¤¢¤ëÁ´¤Æ¤ÎưŪ¹½Â¤ÂΤò´Þ¤àÇÛÎó¡£
¤³¤ì¤Ï¼«Æ°Åª¤Ë¥ê¥ó¥«¤ËÅϤµ¤ì¤ë¡£
.\" .El
.\"O .SH NOTES
.SH È÷¹Í
.\"O .\" OpenBSD
.\"O .\" ELF support first appeared in
.\"O .\" OpenBSD 1.2 ,
.\"O .\" although not all supported platforms use it as the native
.\"O .\" binary file format.
.\" OpenBSD
.\" ELF ¤Î¥µ¥Ý¡¼¥È¤Ï
.\" OpenBSD 1.2
.\" ¤Ç½é¤á¤ÆÅо줷¤¿¡£
.\" ¤·¤«¤·¡¢¤³¤ì¤ò¥µ¥Ý¡¼¥È¤¹¤ë¥×¥é¥Ã¥È¥Õ¥©¡¼¥à¤ÎÁ´¤Æ¤¬
.\" ¥Í¥¤¥Æ¥£¥Ö¥Ð¥¤¥Ê¥ê¥Õ¥¡¥¤¥ë¥Õ¥©¡¼¥Þ¥Ã¥È¤È¤·¤Æ»È¤Ã¤Æ¤¤¤¿Ìõ¤Ç¤Ï¤Ê¤¤¡£
.\"O ELF first appeared in
.\"O System V.
ELF ¤Ï System V ¤Ç½é¤á¤ÆÅо줷¤¿¡£
.\"O ELF in itself first appeared in
.\"O System V.
ELF ¼«ÂΤÏ
System V
¤Ç½é¤á¤ÆÅо줷¤¿¡£
.\"O The ELF format is an adopted standard.
ELF ¥Õ¥©¡¼¥Þ¥Ã¥È¤ÏºÎÂò¤µ¤ì¤¿É¸½à¤Ç¤¢¤ë¡£
.\"O .\" .SH AUTHORS
.\" .SH Ãø¼Ô
.\"O .\" The original version of this manual page was written by
.\"O .\" .An Jeroen Ruigrok van der Werven
.\"O .\" .Aq asmodai@FreeBSD.org
.\"O .\" with inspiration from BSDi's
.\"O .\" .Bsx
.\"O .\" .Nm elf
.\"O .\" man page.
.\" ¤³¤Î man ¥Ú¡¼¥¸¤Î¸µ¡¹¤Î¥Ð¡¼¥¸¥ç¥ó¤Ï¡¢BSDi ¤Î
.\" .Bsx
.\" .Nm elf
.\" man ¥Ú¡¼¥¸¤Ë»É·ã¤ò¼õ¤±¤Æ
.\" .An Jeroen Ruigrok van der Werven
.\" .Aq asmodai@FreeBSD.org
.\" ¤¬½ñ¤¤¤¿¡£
.\"O .SH SEE ALSO
.SH ´ØÏ¢¹àÌÜ
.BR as (1),
.BR gdb (1),
.BR ld (1),
.BR objdump (1),
.BR execve (2),
.BR core (5)
.PP
Hewlett-Packard,
.IR "Elf-64 Object File Format" .
.PP
Santa Cruz Operation,
.IR "System V Application Binary Interface" .
.PP
Unix System Laboratories,
"Object Files",
.IR "Executable and Linking Format (ELF)" .