漢のUNIX　静的ライブラリをつくってみよう　(vol.47掲載)

著者：後藤大地

　前回の記事では、実装を複数の.c ファイルに分けて作成し、それらをコンパイルして.o ファイルに変更し、その.o ファイルを組み合わせてバイナリファイルを生成することを説明した。
　.o ファイルはバイナリファイルのパーツのようになっており、これらを組み上げることで実装に動作するバイナリファイルを作ることができる。

記事本文掲載のシェルスクリプトマガジンvol.47は以下リンク先でご購入できます。

% ls /usr/lib | grep '\.a$' | head
lib80211.a
lib80211_p.a
libBlocksRuntime.a
libBlocksRuntime_p.a
libalias.a
libalias_cuseeme.a
libalias_cuseeme_p.a
libalias_dummy.a
libalias_dummy_p.a
libalias_ftp.a
% cp /usr/lib/libalias.a ./
% file libalias.a
libalias.a: current ar archive
% ar -xv libalias.a
x - alias_proxy.o
x - alias_db.o
x - alias.o
x - alias_mod.o
x - alias_util.o
% tree
.
|-- alias.o
|-- alias_db.o
|-- alias_mod.o
|-- alias_proxy.o
|-- alias_util.o
`-- libalias.a

0 directories, 6 files
%

% ls /usr/lib | grep '\.a$' | head

lib80211.a

lib80211_p.a

libBlocksRuntime.a

libBlocksRuntime_p.a

libalias.a

libalias_cuseeme.a

libalias_cuseeme_p.a

libalias_dummy.a

libalias_dummy_p.a

libalias_ftp.a

% cp /usr/lib/libalias.a ./

% file libalias.a

libalias.a: current ar archive

% ar -xv libalias.a

x - alias_proxy.o

x - alias_db.o

x - alias.o

x - alias_mod.o

x - alias_util.o

% tree

|-- alias.o

|-- alias_db.o

|-- alias_mod.o

|-- alias_proxy.o

|-- alias_util.o

`-- libalias.a

0 directories, 6 files

% locate alias_mod.c
/usr/src/sys/netinet/libalias/alias_mod.c
% locate alias_util.c
/usr/src/sys/netinet/libalias/alias_util.c
% locate alias_db.c
/usr/src/sys/netinet/libalias/alias_db.c
% locate alias_proxy.c
/usr/src/sys/netinet/libalias/alias_proxy.c
% locate alias.c | grep netinet/libalias
/usr/src/sys/netinet/libalias/alias.c
%

% locate alias_mod.c

/usr/src/sys/netinet/libalias/alias_mod.c

% locate alias_util.c

/usr/src/sys/netinet/libalias/alias_util.c

% locate alias_db.c

/usr/src/sys/netinet/libalias/alias_db.c

% locate alias_proxy.c

/usr/src/sys/netinet/libalias/alias_proxy.c

% locate alias.c | grep netinet/libalias

/usr/src/sys/netinet/libalias/alias.c

% tree
.
|-- include
|   `-- ore.h
|-- lib
`-- libore
    |-- Makefile
    |-- indent.c
    |-- ore.c
    |-- setmsg.c
    |-- usage.c
    `-- version.c

3 directories, 7 files
%

% tree

|-- include

| `-- ore.h

|-- lib

`-- libore

|-- Makefile

|-- indent.c

|-- ore.c

|-- setmsg.c

|-- usage.c

`-- version.c

3 directories, 7 files

% cd libore
% make
cc -I. -I./../include/ -O2 -pipe -c indent.c -o indent.o
cc -I. -I./../include/ -O2 -pipe -c ore.c -o ore.o
cc -I. -I./../include/ -O2 -pipe -c setmsg.c -o setmsg.o
cc -I. -I./../include/ -O2 -pipe -c usage.c -o usage.o
cc -I. -I./../include/ -O2 -pipe -c version.c -o version.o
ar -crv ./../lib/libore.a indent.o ore.o setmsg.o usage.o version.o
a - indent.o
a - ore.o
a - setmsg.o
a - usage.o
a - version.o
% cd ..

% cd libore

% make

cc -I. -I./../include/ -O2 -pipe -c indent.c -o indent.o

cc -I. -I./../include/ -O2 -pipe -c ore.c -o ore.o

cc -I. -I./../include/ -O2 -pipe -c setmsg.c -o setmsg.o

cc -I. -I./../include/ -O2 -pipe -c usage.c -o usage.o

cc -I. -I./../include/ -O2 -pipe -c version.c -o version.o

ar -crv ./../lib/libore.a indent.o ore.o setmsg.o usage.o version.o

a - indent.o

a - ore.o

a - setmsg.o

a - usage.o

a - version.o

% cd ..

% tree
.
|-- include
|   `-- ore.h
|-- lib
|   `-- libore.a
`-- libore
    |-- Makefile
    |-- indent.c
    |-- indent.o
    |-- ore.c
    |-- ore.o
    |-- setmsg.c
    |-- setmsg.o
    |-- usage.c
    |-- usage.o
    |-- version.c
    `-- version.o

3 directories, 13 files
%

% tree

|-- include

| `-- ore.h

|-- lib

| `-- libore.a

`-- libore

|-- Makefile

|-- indent.c

|-- indent.o

|-- ore.c

|-- ore.o

|-- setmsg.c

|-- setmsg.o

|-- usage.c

|-- usage.o

|-- version.c

`-- version.o

3 directories, 13 files

% readelf -c libore.a
Index of archive libore.a: (14 entries)
Binary libore.a(indent.o) contains:
        _usage_msg
        _version_msg
        indent
Binary libore.a(ore.o) contains:
        _usage_msg
        _version_msg
Binary libore.a(setmsg.o) contains:
        _usage_msg
        _version_msg
        setmsg
Binary libore.a(usage.o) contains:
        _usage_msg
        _version_msg
        usage
Binary libore.a(version.o) contains:
        _usage_msg
        _version_msg
        version
%

% readelf -c libore.a

Index of archive libore.a: (14 entries)

Binary libore.a(indent.o) contains:

_usage_msg

_version_msg

indent

Binary libore.a(ore.o) contains:

_usage_msg

_version_msg

Binary libore.a(setmsg.o) contains:

_usage_msg

_version_msg

setmsg

Binary libore.a(usage.o) contains:

_usage_msg

_version_msg

usage

Binary libore.a(version.o) contains:

_usage_msg

_version_msg

version

% ar -xv libore.a
x - indent.o
x - ore.o
x - setmsg.o
x - usage.o
x - version.o
% ls
indent.o  libore.a  ore.o     setmsg.o  usage.o   v
ersion.o
%

% ar -xv libore.a

x - indent.o

x - ore.o

x - setmsg.o

x - usage.o

x - version.o

% ls

indent.o libore.a ore.o setmsg.o usage.o v

ersion.o

#include "ore.h"

1	#include "ore.h"

#include <stdio.h>

#include "ore.h"

void
version(void)
{
        fprintf(USAGE_OUT, ES_BOLD("バージョン:") " %s\n", 
                _version_msg);
}

#include <stdio.h>

#include "ore.h"

void

version(void)

{

fprintf(USAGE_OUT, ES_BOLD("バージョン:") " %s\n",

_version_msg);

}

#include <stdio.h>

#include "ore.h"

void
usage(void)
{
        fprintf(USAGE_OUT, ES_BOLD("使い方:") "\n%s\n", 
                indent(_usage_msg));
}

#include <stdio.h>

#include "ore.h"

void

usage(void)

{

fprintf(USAGE_OUT, ES_BOLD("使い方:") "\n%s\n",

indent(_usage_msg));

}

#include "ore.h"

char *
indent(char *t)
{
        static char buf[BUFFER_SIZE];
        char *p;

        int i = 0;
        p = t;
        buf[i++] = '\t';
        for (; i < BUFFER_SIZE - 1; i++, p++) {
                buf[i] = *p;
                if ('\n' == *p)
                        buf[++i] = '\t';
                if ('\0' == *p)
                        break;
        }
        if ('\0' != buf[i])
                buf[i] = '\0';

        return buf;
}

#include "ore.h"

char *

indent(char *t)

{

static char buf[BUFFER_SIZE];

char *p;

int i = 0;

p = t;

buf[i++] = '\t';

for (; i < BUFFER_SIZE - 1; i++, p++) {

buf[i] = *p;

if ('\n' == *p)

buf[++i] = '\t';

if ('\0' == *p)

break;

}

if ('\0' != buf[i])

buf[i] = '\0';

return buf;

}

#include <stdlib.h>
#include <string.h>

#include "ore.h"

int
setmsg(char *key, char *value)
{
        if (0 == strcmp("usage", key)) {
                _usage_msg = calloc(1, BUFFER_SIZE * sizeof(char));
                strncpy(_usage_msg, value, BUFFER_SIZE);
                _usage_msg[BUFFER_SIZE - 1] = '\0';
        }
        else if (0 == strcmp("version", key)) {
                _version_msg = calloc(1, BUFFER_SIZE * sizeof(char));
                strncpy(_version_msg, value, BUFFER_SIZE);
                _version_msg[BUFFER_SIZE - 1] = '\0';
        }
        else
                return (-1);

        return 0;
}

#include <stdlib.h>

#include <string.h>

#include "ore.h"

int

setmsg(char *key, char *value)

{

if (0 == strcmp("usage", key)) {

_usage_msg = calloc(1, BUFFER_SIZE * sizeof(char));

strncpy(_usage_msg, value, BUFFER_SIZE);

_usage_msg[BUFFER_SIZE - 1] = '\0';

}

else if (0 == strcmp("version", key)) {

_version_msg = calloc(1, BUFFER_SIZE * sizeof(char));

strncpy(_version_msg, value, BUFFER_SIZE);

_version_msg[BUFFER_SIZE - 1] = '\0';

}

else

return (-1);

return 0;

}

#ifndef _ORE_H_
#define _ORE_H_

#define BUFFER_SIZE     4096
#define USAGE_OUT       stderr
#define VERSION_OUT     stdout

#define ESC_SEQ_NORM    "\x1b[0m"
#define ESC_SEQ_BOLD    "\x1b[1m"
#define ESC_SEQ_GRAY    "\x1b[2m"
#define ESC_SEQ_UBAR    "\x1b[4m"

#define ES_BOLD(X)      ESC_SEQ_BOLD X ESC_SEQ_NORM
#define ES_LIGHT(X)     ESC_SEQ_GRAY X ESC_SEQ_NORM
#define ES_UBAR(X)      ESC_SEQ_UBAR X ESC_SEQ_NORM

char *_usage_msg;
char *_version_msg;

char *indent(char *);
int setmsg(char *, char *);
void usage(void);
void version(void);

#endif

#ifndef _ORE_H_

#define _ORE_H_

#define BUFFER_SIZE 4096

#define USAGE_OUT stderr

#define VERSION_OUT stdout

#define ESC_SEQ_NORM "\x1b[0m"

#define ESC_SEQ_BOLD "\x1b[1m"

#define ESC_SEQ_GRAY "\x1b[2m"

#define ESC_SEQ_UBAR "\x1b[4m"

#define ES_BOLD(X) ESC_SEQ_BOLD X ESC_SEQ_NORM

#define ES_LIGHT(X) ESC_SEQ_GRAY X ESC_SEQ_NORM

#define ES_UBAR(X) ESC_SEQ_UBAR X ESC_SEQ_NORM

char *_usage_msg;

char *_version_msg;

char *indent(char *);

int setmsg(char *, char *);

void usage(void);

void version(void);

#endif

CFLAGS=         -I. -I./../include/ -O2 -pipe 

LIBA=           ./../lib/libore.a
OBJS!=          ls | grep '[.]c$$' 2> /dev/null | sed 's/.c$$/.o/g'

.SUFFIXES:      .o .c

.c.o:
        cc ${CFLAGS} -c $< -o $@

all: ${OBJS}
        ar -crv ${LIBA} ${OBJS}

clean:
        rm -f ${LIBA} ${OBJS}

CFLAGS= -I. -I./../include/ -O2 -pipe

LIBA= ./../lib/libore.a

OBJS!= ls | grep '[.]c$$' 2> /dev/null | sed 's/.c$$/.o/g'

.SUFFIXES: .o .c

.c.o:

cc ${CFLAGS} -c $< -o $@

all: ${OBJS}

ar -crv ${LIBA} ${OBJS}

clean:

rm -f ${LIBA} ${OBJS}

% tree
.
|-- bin
|-- include
|   `-- ore.h
|-- lib
|-- libore
|   |-- Makefile
|   |-- indent.c
|   |-- ore.c
|   |-- setmsg.c
|   |-- usage.c
|   `-- version.c
`-- src
    `-- bin
        `-- oreapp
            |-- Makefile
            `-- oreapp.c

7 directories, 9 files
%

% tree

|-- bin

|-- include

| `-- ore.h

|-- lib

|-- libore

| |-- Makefile

| |-- indent.c

| |-- ore.c

| |-- setmsg.c

| |-- usage.c

| `-- version.c

`-- src

`-- bin

`-- oreapp

|-- Makefile

`-- oreapp.c

7 directories, 9 files

% tree
.
|-- bin
|   `-- oreapp
|-- include
|   `-- ore.h
|-- lib
|   `-- libore.a
|-- libore
|   |-- Makefile
|   |-- indent.c
|   |-- indent.o
|   |-- ore.c
|   |-- ore.o
|   |-- setmsg.c
|   |-- setmsg.o
|   |-- usage.c
|   |-- usage.o
|   |-- version.c
|   `-- version.o
`-- src
    `-- bin
        `-- oreapp
            |-- Makefile
            |-- oreapp.c
            `-- oreapp.o

7 directories, 17 files
%

% tree

|-- bin

| `-- oreapp

|-- include

| `-- ore.h

|-- lib

| `-- libore.a

|-- libore

| |-- Makefile

| |-- indent.c

| |-- indent.o

| |-- ore.c

| |-- ore.o

| |-- setmsg.c

| |-- setmsg.o

| |-- usage.c

| |-- usage.o

| |-- version.c

| `-- version.o

`-- src

`-- bin

`-- oreapp

|-- Makefile

|-- oreapp.c

`-- oreapp.o

7 directories, 17 files

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sysexits.h>

#include "ore.h"

int
main(int argc, char *argv[])
{
        setmsg("usage", "oreapp [-v] [-h] string...");
        setmsg("version", "1.0");

        int ch;
        while ((ch = getopt(argc, argv, "hv")) != -1) {
                switch (ch) {
                case 'v':
                        version();
                        exit(EX_USAGE);
                        break;
                case '?':
                case 'h':
                        usage();
                        exit(EX_USAGE);
                        break;
                default:
                        usage();
                        exit(EX_USAGE);
                        break;
                }
        }
        argc -= optind;
        argv += optind;

        for (int i = 0; i < argc; i++)  
                printf("%06d %s\n", 1+i, argv[i]);

        return(EX_OK);
}

#include <unistd.h>

#include <stdlib.h>

#include <stdio.h>

#include <sysexits.h>

#include "ore.h"

int

main(int argc, char *argv[])

{

setmsg("usage", "oreapp [-v] [-h] string...");

setmsg("version", "1.0");

int ch;

while ((ch = getopt(argc, argv, "hv")) != -1) {

switch (ch) {

case 'v':

version();

exit(EX_USAGE);

break;

case '?':

case 'h':

usage();

exit(EX_USAGE);

break;

default:

usage();

exit(EX_USAGE);

break;

}

argc -= optind;

argv += optind;

for (int i = 0; i < argc; i++)

printf("%06d %s\n", 1+i, argv[i]);

return(EX_OK);

}

BIN=            ./../../../bin/oreapp
LIBA=           ./../../../lib/libore.a
OBJS!=          ls | grep '[.]c$$' 2> /dev/null | sed 's/.c$$/.o/g'

CFLAGS=         -I. -I./../../../include/ -O2 -pipe 

.SUFFIXES:      .o .c

.c.o:
        cc ${CFLAGS} -c $< -o $@

all: ${OBJS}
        cc ${CFLAGS} -o ${BIN} ${OBJS} -L./../../../lib/ -lore

clean:
        rm -f ${BIN} ${OBJS}

BIN= ./../../../bin/oreapp

LIBA= ./../../../lib/libore.a

OBJS!= ls | grep '[.]c$$' 2> /dev/null | sed 's/.c$$/.o/g'

CFLAGS= -I. -I./../../../include/ -O2 -pipe

.SUFFIXES: .o .c

.c.o:

cc ${CFLAGS} -c $< -o $@

all: ${OBJS}

cc ${CFLAGS} -o ${BIN} ${OBJS} -L./../../../lib/ -lore

clean:

rm -f ${BIN} ${OBJS}

% cd libore/
% make
cc -I. -I./../include/ -O2 -pipe -c indent.c -o indent.o
cc -I. -I./../include/ -O2 -pipe -c ore.c -o ore.o
cc -I. -I./../include/ -O2 -pipe -c setmsg.c -o setmsg.o
cc -I. -I./../include/ -O2 -pipe -c usage.c -o usage.o
cc -I. -I./../include/ -O2 -pipe -c version.c -o version.o
ar -crv ./../lib/libore.a indent.o ore.o setmsg.o usage.o version.o
a - indent.o
a - ore.o
a - setmsg.o
a - usage.o
a - version.o
% cd ../src/bin/oreapp/
% make
cc -I. -I./../../../include/ -O2 -pipe -c oreapp.c -o oreapp.o
cc -I. -I./../../../include/ -O2 -pipe -o ./../../../bin/oreapp oreapp.o -L./../../../lib/ -lore
%

% cd libore/

% make

cc -I. -I./../include/ -O2 -pipe -c indent.c -o indent.o

cc -I. -I./../include/ -O2 -pipe -c ore.c -o ore.o

cc -I. -I./../include/ -O2 -pipe -c setmsg.c -o setmsg.o

cc -I. -I./../include/ -O2 -pipe -c usage.c -o usage.o

cc -I. -I./../include/ -O2 -pipe -c version.c -o version.o

ar -crv ./../lib/libore.a indent.o ore.o setmsg.o usage.o version.o

a - indent.o

a - ore.o

a - setmsg.o

a - usage.o

a - version.o

% cd ../src/bin/oreapp/

% make

cc -I. -I./../../../include/ -O2 -pipe -c oreapp.c -o oreapp.o

cc -I. -I./../../../include/ -O2 -pipe -o ./../../../bin/oreapp oreapp.o -L./../../../lib/ -lore

% ./oreapp -v
バージョン: 1.0
% ./oreapp -h
使い方:
        oreapp [-v] [-h] string...
% ./oreapp a b c d
000001 a
000002 b
000003 c
000004 d
%

% ./oreapp -v

バージョン: 1.0

% ./oreapp -h

使い方:

oreapp [-v] [-h] string...

% ./oreapp a b c d

000001 a

000002 b

000003 c

000004 d

% readelf -a oreapp
ELF Header:
  Magic:   7f 45 4c 46 02 01 01 09 00 00 00 00 00 00 00 00
  Class:                             ELF64
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            FreeBSD
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           Advanced Micro Devices x86-64
  Version:                           0x1
  Entry point address:               0x4006e0
  Start of program headers:          64 (bytes into file)
  Start of section headers:          4728 (bytes into file)
  Flags:                             0
  Size of this header:               64 (bytes)
  Size of program headers:           56 (bytes)
  Number of program headers:         8
  Size of section headers:           64 (bytes)
  Number of section headers:         29
  Section header string table index: 26

Elf file type is EXEC (Executable file)
Entry point 0x4006e0
There are 8 program headers, starting at offset 64

Program Headers:
  Type           Offset             VirtAddr           PhysAddr
                 FileSiz            MemSiz              Flg    Align
  PHDR           0x0000000000000040 0x0000000000400040 0x0000000000400040
                 0x00000000000001c0 0x00000000000001c0  R E    0x8
  INTERP         0x0000000000000200 0x0000000000400200 0x0000000000400200
                 0x0000000000000015 0x0000000000000015  R      0x1
      [Requesting program interpreter: /libexec/ld-elf.so.1]
  LOAD           0x0000000000000000 0x0000000000400000 0x0000000000400000
                 0x0000000000000d6c 0x0000000000000d6c  R E    0x200000
  LOAD           0x0000000000000d70 0x0000000000600d70 0x0000000000600d70
                 0x0000000000000241 0x0000000000001278  RW     0x200000
  DYNAMIC        0x0000000000000d98 0x0000000000600d98 0x0000000000600d98
                 0x00000000000001a0 0x00000000000001a0  RW     0x8
  NOTE           0x0000000000000218 0x0000000000400218 0x0000000000400218
                 0x0000000000000030 0x0000000000000030  R      0x4
  GNU_EH_FRAME   0x0000000000000c24 0x0000000000400c24 0x0000000000400c24
                 0x0000000000000044 0x0000000000000044  R      0x4
  GNU_STACK      0x0000000000000000 0x0000000000000000 0x0000000000000000
                 0x0000000000000000 0x0000000000000000  RW     0x8


Section to Segment mapping:
  Segment Sections...
   00
   01     .interp
   02     .interp .note.tag .hash .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt .init .plt .text .fini .rodata .eh_frame_hdr .eh_frame
   03     .ctors .dtors .jcr .dynamic .got.plt .data .bss
   04     .dynamic
   05     .note.tag
   06     .eh_frame_hdr
   07
There are 29 section headers, starting at offset 0x1278:
Section Headers:
  [Nr] Name              Type             Address           Offset
       Size              EntSize          Flags  Link  Info  Align
  [ 0] (null)            NULL             0000000000000000  00000000
       0000000000000000  0000000000000000           0     0     0
  [ 1] .interp           PROGBITS         0000000000400200  00000200
       0000000000000015  0000000000000000   A       0     0     1
  [ 2] .note.tag         NOTE             0000000000400218  00000218
       0000000000000030  0000000000000000   A       0     0     4
  [ 3] .hash             HASH             0000000000400248  00000248
       0000000000000054  0000000000000004   A       5     0     8
  [ 4] .gnu.hash         GNU_HASH         00000000004002a0  000002a0
       0000000000000038  0000000000000000   A       5     0     8
  [ 5] .dynsym           DYNSYM           00000000004002d8  000002d8
       0000000000000180  0000000000000018   A       6     1     8
  [ 6] .dynstr           STRTAB           0000000000400458  00000458
       0000000000000087  0000000000000000   A       0     0     1
  [ 7] .gnu.version      SUNW_versym      00000000004004e0  000004e0
       0000000000000020  0000000000000002   A       5     0     2
  [ 8] .gnu.version_r    SUNW_verneed     0000000000400500  00000500
       0000000000000020  0000000000000000   A       6     1     8
  [ 9] .rela.dyn         RELA             0000000000400520  00000520
       0000000000000030  0000000000000018   A       5     0     8
  [10] .rela.plt         RELA             0000000000400550  00000550
       00000000000000d8  0000000000000018   A       5    12     8
  [11] .init             PROGBITS         0000000000400628  00000628
       0000000000000013  0000000000000000  AX       0     0     4
  [12] .plt              PROGBITS         000000000040063c  0000063c
       00000000000000a0  0000000000000010  AX       0     0     4
  [13] .text             PROGBITS         00000000004006e0  000006e0
       00000000000004c8  0000000000000000  AX       0     0     16
  [14] .fini             PROGBITS         0000000000400ba8  00000ba8
       000000000000000e  0000000000000000  AX       0     0     4
  [15] .rodata           PROGBITS         0000000000400bb6  00000bb6
       000000000000006d  0000000000000001 AMS       0     0     1
  [16] .eh_frame_hdr     PROGBITS         0000000000400c24  00000c24
       0000000000000044  0000000000000000   A       0     0     4
  [17] .eh_frame         X86_64_UNWIND    0000000000400c68  00000c68
       0000000000000104  0000000000000000   A       0     0     8
  [18] .ctors            PROGBITS         0000000000600d70  00000d70
       0000000000000010  0000000000000000  WA       0     0     8
  [19] .dtors            PROGBITS         0000000000600d80  00000d80
       0000000000000010  0000000000000000  WA       0     0     8
  [20] .jcr              PROGBITS         0000000000600d90  00000d90
       0000000000000008  0000000000000000  WA       0     0     8
  [21] .dynamic          DYNAMIC          0000000000600d98  00000d98
       00000000000001a0  0000000000000010  WA       6     0     8
  [22] .got.plt          PROGBITS         0000000000600f38  00000f38
       0000000000000060  0000000000000008  WA       0     0     8
  [23] .data             PROGBITS         0000000000600f98  00000f98
       0000000000000019  0000000000000000  WA       0     0     8
  [24] .bss              NOBITS           0000000000600fc0  00000fb1
       0000000000001028  0000000000000000  WA       0     0     16
  [25] .comment          PROGBITS         0000000000000000  00000fb1
       00000000000001e3  0000000000000001  MS       0     0     1
  [26] .shstrtab         STRTAB           0000000000000000  00001194
       00000000000000e2  0000000000000000           0     0     1
  [27] .symtab           SYMTAB           0000000000000000  000019b8
       0000000000000810  0000000000000018          28    58     8
  [28] .strtab           STRTAB           0000000000000000  000021c8
       0000000000000363  0000000000000000           0     0     1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings)
  I (info), L (link order), G (group), x (unknown)
  O (extra OS processing required) o (OS specific), p (processor specific)

Dynamic section at offset 0xd98 contains 21 entries:
  Tag                Type                  Name/Value
 0x0000000000000001 NEEDED               Shared library: [libc.so.7]
 0x000000000000000c INIT                 0x400628
 0x000000000000000d FINI                 0x400ba8
 0x0000000000000004 HASH                 0x400248
 0x000000006ffffef5 GNU_HASH             0x4002a0
 0x0000000000000005 STRTAB               0x400458
 0x0000000000000006 SYMTAB               0x4002d8
 0x000000000000000a STRSZ                135 (bytes)
 0x000000000000000b SYMENT               24 (bytes)
 0x0000000000000015 DEBUG                0x0
 0x0000000000000003 PLTGOT               0x600f38
 0x0000000000000002 PLTRELSZ             216 (bytes)
 0x0000000000000014 PLTREL               RELA
 0x0000000000000017 JMPREL               0x400550
 0x0000000000000007 RELA                 0x400520
 0x0000000000000008 RELASZ               48 (bytes)
 0x0000000000000009 RELAENT              24 (bytes)
 0x000000006ffffffe VERNEED              0x400500
 0x000000006fffffff VERNEEDNUM           1
 0x000000006ffffff0 VERSYM               0x4004e0
 0x0000000000000000 NULL                 0x0

Relocation section with addend (.rela.dyn):
r_offset     r_info       r_type              st_value         st_name + r_addend
000000600fc0 000e00000005 R_X86_64_COPY       0000000000600fc0 optind + 0
000000600fc8 000f00000005 R_X86_64_COPY       0000000000600fc8 __stderrp + 0

Relocation section with addend (.rela.plt):
r_offset     r_info       r_type              st_value         st_name + r_addend
000000600f50 000200000007 R_X86_64_JUMP_SLOT  0000000000000000 printf + 0
000000600f58 000300000007 R_X86_64_JUMP_SLOT  0000000000000000 atexit + 0
000000600f60 000400000007 R_X86_64_JUMP_SLOT  0000000000000000 _init_tls + 0
000000600f68 000500000007 R_X86_64_JUMP_SLOT  0000000000000000 fprintf + 0
000000600f70 000600000007 R_X86_64_JUMP_SLOT  0000000000000000 getopt + 0
000000600f78 000700000007 R_X86_64_JUMP_SLOT  0000000000000000 calloc + 0
000000600f80 000800000007 R_X86_64_JUMP_SLOT  0000000000000000 strncpy + 0
000000600f88 000900000007 R_X86_64_JUMP_SLOT  0000000000000000 exit + 0
000000600f90 000a00000007 R_X86_64_JUMP_SLOT  0000000000000000 strcmp + 0
Symbol table (.dynsym) contains 16 entries:
   Num:    Value          Size Type    Bind   Vis      Ndx Name
     0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND
     1: 0000000000000000     0 NOTYPE  WEAK   DEFAULT  UND _Jv_RegisterClasses
     2: 0000000000000000   188 FUNC    GLOBAL DEFAULT  UND printf@FBSD_1.0 (2)
     3: 0000000000000000    71 FUNC    GLOBAL DEFAULT  UND atexit@FBSD_1.0 (2)
     4: 0000000000000000     6 FUNC    GLOBAL DEFAULT  UND _init_tls@FBSD_1.0 (2)
     5: 0000000000000000   239 FUNC    GLOBAL DEFAULT  UND fprintf@FBSD_1.0 (2)
     6: 0000000000000000   617 FUNC    GLOBAL DEFAULT  UND getopt@FBSD_1.0 (2)
     7: 0000000000000000  3171 FUNC    GLOBAL DEFAULT  UND calloc@FBSD_1.0 (2)
     8: 0000000000000000    76 FUNC    GLOBAL DEFAULT  UND strncpy@FBSD_1.0 (2)
     9: 0000000000000000    54 FUNC    GLOBAL DEFAULT  UND exit@FBSD_1.0 (2)
    10: 0000000000000000   126 FUNC    GLOBAL DEFAULT  UND strcmp@FBSD_1.0 (2)
    11: 0000000000601fd0     8 OBJECT  GLOBAL DEFAULT   24 environ
    12: 0000000000601fe8     0 NOTYPE  GLOBAL DEFAULT  ABS _end
    13: 0000000000600f98     8 OBJECT  GLOBAL DEFAULT   23 __progname
    14: 0000000000600fc0     4 OBJECT  GLOBAL DEFAULT   24 optind@FBSD_1.0 (2)
    15: 0000000000600fc8     8 OBJECT  GLOBAL DEFAULT   24 __stderrp@FBSD_1.0 (2)
Symbol table (.symtab) contains 86 entries:
   Num:    Value          Size Type    Bind   Vis      Ndx Name
     0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND
     1: 0000000000400200     0 SECTION LOCAL  DEFAULT    1
     2: 0000000000400218     0 SECTION LOCAL  DEFAULT    2
     3: 0000000000400248     0 SECTION LOCAL  DEFAULT    3
     4: 00000000004002a0     0 SECTION LOCAL  DEFAULT    4
     5: 00000000004002d8     0 SECTION LOCAL  DEFAULT    5
     6: 0000000000400458     0 SECTION LOCAL  DEFAULT    6
     7: 00000000004004e0     0 SECTION LOCAL  DEFAULT    7
     8: 0000000000400500     0 SECTION LOCAL  DEFAULT    8
     9: 0000000000400520     0 SECTION LOCAL  DEFAULT    9
    10: 0000000000400550     0 SECTION LOCAL  DEFAULT   10
    11: 0000000000400628     0 SECTION LOCAL  DEFAULT   11
    12: 000000000040063c     0 SECTION LOCAL  DEFAULT   12
    13: 00000000004006e0     0 SECTION LOCAL  DEFAULT   13
    14: 0000000000400ba8     0 SECTION LOCAL  DEFAULT   14
    15: 0000000000400bb6     0 SECTION LOCAL  DEFAULT   15
    16: 0000000000400c24     0 SECTION LOCAL  DEFAULT   16
    17: 0000000000400c68     0 SECTION LOCAL  DEFAULT   17
    18: 0000000000600d70     0 SECTION LOCAL  DEFAULT   18
    19: 0000000000600d80     0 SECTION LOCAL  DEFAULT   19
    20: 0000000000600d90     0 SECTION LOCAL  DEFAULT   20
    21: 0000000000600d98     0 SECTION LOCAL  DEFAULT   21
    22: 0000000000600f38     0 SECTION LOCAL  DEFAULT   22
    23: 0000000000600f98     0 SECTION LOCAL  DEFAULT   23
    24: 0000000000600fc0     0 SECTION LOCAL  DEFAULT   24
    25: 0000000000000000     0 SECTION LOCAL  DEFAULT   25
    26: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS /usr/src/lib/csu/amd64/crt1.c
    27: 0000000000400218    24 OBJECT  LOCAL  DEFAULT    2 abitag
    28: 0000000000400230    24 OBJECT  LOCAL  DEFAULT    2 crt_noinit_tag
    29: 0000000000400870    83 FUNC    LOCAL  DEFAULT   13 finalizer
    30: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS /usr/src/gnu/lib/csu/../../../contrib/gcc/crtstuff.c
    31: 0000000000600d70     8 OBJECT  LOCAL  DEFAULT   18 __CTOR_LIST__
    32: 0000000000600d80     8 OBJECT  LOCAL  DEFAULT   19 __DTOR_LIST__
    33: 0000000000600d90     0 OBJECT  LOCAL  DEFAULT   20 __JCR_LIST__
    34: 00000000004008d0    53 FUNC    LOCAL  DEFAULT   13 __do_global_dtors_aux
    35: 0000000000600fb0     1 OBJECT  LOCAL  DEFAULT   23 __do_global_dtors_aux.completed
    36: 0000000000600fa8     8 OBJECT  LOCAL  DEFAULT   23 __do_global_dtors_aux.p
    37: 0000000000400910    34 FUNC    LOCAL  DEFAULT   13 frame_dummy
    38: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS /usr/src/gnu/lib/csu/../../../contrib/gcc/crtstuff.c
    39: 0000000000600d78     8 OBJECT  LOCAL  DEFAULT   18 __CTOR_END__
    40: 0000000000600d88     8 OBJECT  LOCAL  DEFAULT   19 __DTOR_END__
    41: 0000000000400d68     4 OBJECT  LOCAL  DEFAULT   17 __FRAME_END__
    42: 0000000000600d90     8 OBJECT  LOCAL  DEFAULT   20 __JCR_END__
    43: 0000000000400b70    54 FUNC    LOCAL  DEFAULT   13 __do_global_ctors_aux
    44: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS oreapp.c
    45: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS setmsg.c
    46: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS usage.c
    47: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS version.c
    48: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS indent.c
    49: 0000000000600fd0  4096 OBJECT  LOCAL  DEFAULT   24 indent.buf
    50: 0000000000600d6c     0 NOTYPE  LOCAL  HIDDEN    18 __preinit_array_start
    51: 0000000000600d6c     0 NOTYPE  LOCAL  HIDDEN    18 __fini_array_end
    52: 0000000000600f38     0 OBJECT  LOCAL  HIDDEN    22 _GLOBAL_OFFSET_TABLE_
    53: 0000000000600d6c     0 NOTYPE  LOCAL  HIDDEN    18 __preinit_array_end
    54: 0000000000600d6c     0 NOTYPE  LOCAL  HIDDEN    18 __fini_array_start
    55: 0000000000600d6c     0 NOTYPE  LOCAL  HIDDEN    18 __init_array_end
    56: 0000000000600d6c     0 NOTYPE  LOCAL  HIDDEN    18 __init_array_start
    57: 0000000000600d98     0 OBJECT  LOCAL  HIDDEN    21 _DYNAMIC
    58: 0000000000600fc0     4 OBJECT  GLOBAL DEFAULT   24 optind@@FBSD_1.0
    59: 00000000004006e0   390 FUNC    GLOBAL DEFAULT   13 _start
    60: 0000000000000000     0 NOTYPE  WEAK   DEFAULT  UND _Jv_RegisterClasses
    61: 0000000000600f98     8 OBJECT  GLOBAL DEFAULT   23 __progname
    62: 0000000000601fd8     8 OBJECT  GLOBAL DEFAULT   24 _usage_msg
    63: 0000000000400ba8     0 FUNC    GLOBAL HIDDEN    14 _fini
    64: 0000000000400a10   160 FUNC    GLOBAL DEFAULT   13 setmsg
    65: 0000000000000000   188 FUNC    GLOBAL DEFAULT  UND printf@@FBSD_1.0
    66: 0000000000000000    71 FUNC    GLOBAL DEFAULT  UND atexit@@FBSD_1.0
    67: 0000000000000000     6 FUNC    GLOBAL DEFAULT  UND _init_tls@@FBSD_1.0
    68: 0000000000000000   239 FUNC    GLOBAL DEFAULT  UND fprintf@@FBSD_1.0
    69: 0000000000000000   617 FUNC    GLOBAL DEFAULT  UND getopt@@FBSD_1.0
    70: 0000000000400b10    90 FUNC    GLOBAL DEFAULT   13 indent
    71: 0000000000600fa0     8 OBJECT  GLOBAL HIDDEN    23 __dso_handle
    72: 0000000000601fe0     8 OBJECT  GLOBAL DEFAULT   24 _version_msg
    73: 0000000000400af0    31 FUNC    GLOBAL DEFAULT   13 version
    74: 0000000000000000  3171 FUNC    GLOBAL DEFAULT  UND calloc@@FBSD_1.0
    75: 0000000000000000    76 FUNC    GLOBAL DEFAULT  UND strncpy@@FBSD_1.0
    76: 0000000000600fb1     0 NOTYPE  GLOBAL DEFAULT  ABS __bss_start
    77: 0000000000601fd0     8 OBJECT  GLOBAL DEFAULT   24 environ
    78: 0000000000601fe8     0 NOTYPE  GLOBAL DEFAULT  ABS _end
    79: 0000000000400ab0    52 FUNC    GLOBAL DEFAULT   13 usage
    80: 0000000000000000    54 FUNC    GLOBAL DEFAULT  UND exit@@FBSD_1.0
    81: 0000000000600fb1     0 NOTYPE  GLOBAL DEFAULT  ABS _edata
    82: 0000000000600fc8     8 OBJECT  GLOBAL DEFAULT   24 __stderrp@@FBSD_1.0
    83: 0000000000000000   126 FUNC    GLOBAL DEFAULT  UND strcmp@@FBSD_1.0
    84: 0000000000400940   196 FUNC    GLOBAL DEFAULT   13 main
    85: 0000000000400628     0 FUNC    GLOBAL HIDDEN    11 _init

Histogram for bucket list length (total of 3 buckets):
 Length Number          % of total      Coverage
      0 0               (  0.0%)          0.0%
      1 0               (  0.0%)          0.0%
      2 1               ( 33.3%)         13.3%
      3 0               (  0.0%)         13.3%
      4 0               (  0.0%)         13.3%
      5 0               (  0.0%)         13.3%
      6 1               ( 33.3%)         53.3%
      7 1               ( 33.3%)        100.0%
Histogram for bucket list length (total of 3 buckets):
 Length Number          % of total      Coverage
      0 0               (  0.0%)          0.0%
      1 1               ( 33.3%)         25.0%
      2 2               ( 66.7%)        125.0%

Version symbol section (.gnu.version):
  000:   0 *local*         0 *local*         2 FBSD_1.0        2 FBSD_1.0
  004:   2 FBSD_1.0        2 FBSD_1.0        2 FBSD_1.0        2 FBSD_1.0
  008:   2 FBSD_1.0        2 FBSD_1.0        2 FBSD_1.0        1 *global*
  00c:   1 *global*        1 *global*        2 FBSD_1.0        2 FBSD_1.0

Version needed section (.gnu.version_r):
  0x0000 vn_version: 1 vn_file: libc.so.7 vn_cnt: 1
  0x0010   vna_name: FBSD_1.0 vna_flags: 0 vna_other: 2
%

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% readelf -a oreapp

ELF Header:

Magic: 7f 45 4c 46 02 01 01 09 00 00 00 00 00 00 00 00

Class: ELF64

Data: 2's complement, little endian

Version: 1 (current)

OS/ABI: FreeBSD

ABI Version: 0

Type: EXEC (Executable file)

Machine: Advanced Micro Devices x86-64

Version: 0x1

Entry point address: 0x4006e0

Start of program headers: 64 (bytes into file)

Start of section headers: 4728 (bytes into file)

Flags: 0

Size of this header: 64 (bytes)

Size of program headers: 56 (bytes)

Number of program headers: 8

Size of section headers: 64 (bytes)

Number of section headers: 29

Section header string table index: 26

Elf file type is EXEC (Executable file)

Entry point 0x4006e0

There are 8 program headers, starting at offset 64

Program Headers:

Type Offset VirtAddr PhysAddr

FileSiz MemSiz Flg Align

PHDR 0x0000000000000040 0x0000000000400040 0x0000000000400040

0x00000000000001c0 0x00000000000001c0 R E 0x8

INTERP 0x0000000000000200 0x0000000000400200 0x0000000000400200

0x0000000000000015 0x0000000000000015 R 0x1

[Requesting program interpreter: /libexec/ld-elf.so.1]

LOAD 0x0000000000000000 0x0000000000400000 0x0000000000400000

0x0000000000000d6c 0x0000000000000d6c R E 0x200000

LOAD 0x0000000000000d70 0x0000000000600d70 0x0000000000600d70

0x0000000000000241 0x0000000000001278 RW 0x200000

DYNAMIC 0x0000000000000d98 0x0000000000600d98 0x0000000000600d98

0x00000000000001a0 0x00000000000001a0 RW 0x8

NOTE 0x0000000000000218 0x0000000000400218 0x0000000000400218

0x0000000000000030 0x0000000000000030 R 0x4

GNU_EH_FRAME 0x0000000000000c24 0x0000000000400c24 0x0000000000400c24

0x0000000000000044 0x0000000000000044 R 0x4

GNU_STACK 0x0000000000000000 0x0000000000000000 0x0000000000000000

0x0000000000000000 0x0000000000000000 RW 0x8

Section to Segment mapping:

Segment Sections...

01 .interp

02 .interp .note.tag .hash .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt .init .plt .text .fini .rodata .eh_frame_hdr .eh_frame

03 .ctors .dtors .jcr .dynamic .got.plt .data .bss

04 .dynamic

05 .note.tag

06 .eh_frame_hdr

There are 29 section headers, starting at offset 0x1278:

Section Headers:

[Nr] Name Type Address Offset

Size EntSize Flags Link Info Align

[ 0] (null) NULL 0000000000000000 00000000

0000000000000000 0000000000000000 0 0 0

[ 1] .interp PROGBITS 0000000000400200 00000200

0000000000000015 0000000000000000 A 0 0 1

[ 2] .note.tag NOTE 0000000000400218 00000218

0000000000000030 0000000000000000 A 0 0 4

[ 3] .hash HASH 0000000000400248 00000248

0000000000000054 0000000000000004 A 5 0 8

[ 4] .gnu.hash GNU_HASH 00000000004002a0 000002a0

0000000000000038 0000000000000000 A 5 0 8

[ 5] .dynsym DYNSYM 00000000004002d8 000002d8

0000000000000180 0000000000000018 A 6 1 8

[ 6] .dynstr STRTAB 0000000000400458 00000458

0000000000000087 0000000000000000 A 0 0 1

[ 7] .gnu.version SUNW_versym 00000000004004e0 000004e0

0000000000000020 0000000000000002 A 5 0 2

[ 8] .gnu.version_r SUNW_verneed 0000000000400500 00000500

0000000000000020 0000000000000000 A 6 1 8

[ 9] .rela.dyn RELA 0000000000400520 00000520

0000000000000030 0000000000000018 A 5 0 8

[10] .rela.plt RELA 0000000000400550 00000550

00000000000000d8 0000000000000018 A 5 12 8

[11] .init PROGBITS 0000000000400628 00000628

0000000000000013 0000000000000000 AX 0 0 4

[12] .plt PROGBITS 000000000040063c 0000063c

00000000000000a0 0000000000000010 AX 0 0 4

[13] .text PROGBITS 00000000004006e0 000006e0

00000000000004c8 0000000000000000 AX 0 0 16

[14] .fini PROGBITS 0000000000400ba8 00000ba8

000000000000000e 0000000000000000 AX 0 0 4

[15] .rodata PROGBITS 0000000000400bb6 00000bb6

000000000000006d 0000000000000001 AMS 0 0 1

[16] .eh_frame_hdr PROGBITS 0000000000400c24 00000c24

0000000000000044 0000000000000000 A 0 0 4

[17] .eh_frame X86_64_UNWIND 0000000000400c68 00000c68

0000000000000104 0000000000000000 A 0 0 8

[18] .ctors PROGBITS 0000000000600d70 00000d70

0000000000000010 0000000000000000 WA 0 0 8

[19] .dtors PROGBITS 0000000000600d80 00000d80

0000000000000010 0000000000000000 WA 0 0 8

[20] .jcr PROGBITS 0000000000600d90 00000d90

0000000000000008 0000000000000000 WA 0 0 8

[21] .dynamic DYNAMIC 0000000000600d98 00000d98

00000000000001a0 0000000000000010 WA 6 0 8

[22] .got.plt PROGBITS 0000000000600f38 00000f38

0000000000000060 0000000000000008 WA 0 0 8

[23] .data PROGBITS 0000000000600f98 00000f98

0000000000000019 0000000000000000 WA 0 0 8

[24] .bss NOBITS 0000000000600fc0 00000fb1

0000000000001028 0000000000000000 WA 0 0 16

[25] .comment PROGBITS 0000000000000000 00000fb1

00000000000001e3 0000000000000001 MS 0 0 1

[26] .shstrtab STRTAB 0000000000000000 00001194

00000000000000e2 0000000000000000 0 0 1

[27] .symtab SYMTAB 0000000000000000 000019b8

0000000000000810 0000000000000018 28 58 8

[28] .strtab STRTAB 0000000000000000 000021c8

0000000000000363 0000000000000000 0 0 1

Key to Flags:

W (write), A (alloc), X (execute), M (merge), S (strings)

I (info), L (link order), G (group), x (unknown)

O (extra OS processing required) o (OS specific), p (processor specific)

Dynamic section at offset 0xd98 contains 21 entries:

Tag Type Name/Value

0x0000000000000001 NEEDED Shared library: [libc.so.7]

0x000000000000000c INIT 0x400628

0x000000000000000d FINI 0x400ba8

0x0000000000000004 HASH 0x400248

0x000000006ffffef5 GNU_HASH 0x4002a0

0x0000000000000005 STRTAB 0x400458

0x0000000000000006 SYMTAB 0x4002d8

0x000000000000000a STRSZ 135 (bytes)

0x000000000000000b SYMENT 24 (bytes)

0x0000000000000015 DEBUG 0x0

0x0000000000000003 PLTGOT 0x600f38

0x0000000000000002 PLTRELSZ 216 (bytes)

0x0000000000000014 PLTREL RELA

0x0000000000000017 JMPREL 0x400550

0x0000000000000007 RELA 0x400520

0x0000000000000008 RELASZ 48 (bytes)

0x0000000000000009 RELAENT 24 (bytes)

0x000000006ffffffe VERNEED 0x400500

0x000000006fffffff VERNEEDNUM 1

0x000000006ffffff0 VERSYM 0x4004e0

0x0000000000000000 NULL 0x0

Relocation section with addend (.rela.dyn):

r_offset r_info r_type st_value st_name + r_addend

000000600fc0 000e00000005 R_X86_64_COPY 0000000000600fc0 optind + 0

000000600fc8 000f00000005 R_X86_64_COPY 0000000000600fc8 __stderrp + 0

Relocation section with addend (.rela.plt):

r_offset r_info r_type st_value st_name + r_addend

000000600f50 000200000007 R_X86_64_JUMP_SLOT 0000000000000000 printf + 0

000000600f58 000300000007 R_X86_64_JUMP_SLOT 0000000000000000 atexit + 0

000000600f60 000400000007 R_X86_64_JUMP_SLOT 0000000000000000 _init_tls + 0

000000600f68 000500000007 R_X86_64_JUMP_SLOT 0000000000000000 fprintf + 0

000000600f70 000600000007 R_X86_64_JUMP_SLOT 0000000000000000 getopt + 0

000000600f78 000700000007 R_X86_64_JUMP_SLOT 0000000000000000 calloc + 0

000000600f80 000800000007 R_X86_64_JUMP_SLOT 0000000000000000 strncpy + 0

000000600f88 000900000007 R_X86_64_JUMP_SLOT 0000000000000000 exit + 0

000000600f90 000a00000007 R_X86_64_JUMP_SLOT 0000000000000000 strcmp + 0

Symbol table (.dynsym) contains 16 entries:

Num: Value Size Type Bind Vis Ndx Name

0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND

1: 0000000000000000 0 NOTYPE WEAK DEFAULT UND _Jv_RegisterClasses

2: 0000000000000000 188 FUNC GLOBAL DEFAULT UND printf@FBSD_1.0 (2)

3: 0000000000000000 71 FUNC GLOBAL DEFAULT UND atexit@FBSD_1.0 (2)

4: 0000000000000000 6 FUNC GLOBAL DEFAULT UND _init_tls@FBSD_1.0 (2)

5: 0000000000000000 239 FUNC GLOBAL DEFAULT UND fprintf@FBSD_1.0 (2)

6: 0000000000000000 617 FUNC GLOBAL DEFAULT UND getopt@FBSD_1.0 (2)

7: 0000000000000000 3171 FUNC GLOBAL DEFAULT UND calloc@FBSD_1.0 (2)

8: 0000000000000000 76 FUNC GLOBAL DEFAULT UND strncpy@FBSD_1.0 (2)

9: 0000000000000000 54 FUNC GLOBAL DEFAULT UND exit@FBSD_1.0 (2)

10: 0000000000000000 126 FUNC GLOBAL DEFAULT UND strcmp@FBSD_1.0 (2)

11: 0000000000601fd0 8 OBJECT GLOBAL DEFAULT 24 environ

12: 0000000000601fe8 0 NOTYPE GLOBAL DEFAULT ABS _end

13: 0000000000600f98 8 OBJECT GLOBAL DEFAULT 23 __progname

14: 0000000000600fc0 4 OBJECT GLOBAL DEFAULT 24 optind@FBSD_1.0 (2)

15: 0000000000600fc8 8 OBJECT GLOBAL DEFAULT 24 __stderrp@FBSD_1.0 (2)

Symbol table (.symtab) contains 86 entries:

Num: Value Size Type Bind Vis Ndx Name

0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND

1: 0000000000400200 0 SECTION LOCAL DEFAULT 1

2: 0000000000400218 0 SECTION LOCAL DEFAULT 2

3: 0000000000400248 0 SECTION LOCAL DEFAULT 3

4: 00000000004002a0 0 SECTION LOCAL DEFAULT 4

5: 00000000004002d8 0 SECTION LOCAL DEFAULT 5

6: 0000000000400458 0 SECTION LOCAL DEFAULT 6

7: 00000000004004e0 0 SECTION LOCAL DEFAULT 7

8: 0000000000400500 0 SECTION LOCAL DEFAULT 8

9: 0000000000400520 0 SECTION LOCAL DEFAULT 9

10: 0000000000400550 0 SECTION LOCAL DEFAULT 10

11: 0000000000400628 0 SECTION LOCAL DEFAULT 11

12: 000000000040063c 0 SECTION LOCAL DEFAULT 12

13: 00000000004006e0 0 SECTION LOCAL DEFAULT 13

14: 0000000000400ba8 0 SECTION LOCAL DEFAULT 14

15: 0000000000400bb6 0 SECTION LOCAL DEFAULT 15

16: 0000000000400c24 0 SECTION LOCAL DEFAULT 16

17: 0000000000400c68 0 SECTION LOCAL DEFAULT 17

18: 0000000000600d70 0 SECTION LOCAL DEFAULT 18

19: 0000000000600d80 0 SECTION LOCAL DEFAULT 19

20: 0000000000600d90 0 SECTION LOCAL DEFAULT 20

21: 0000000000600d98 0 SECTION LOCAL DEFAULT 21

22: 0000000000600f38 0 SECTION LOCAL DEFAULT 22

23: 0000000000600f98 0 SECTION LOCAL DEFAULT 23

24: 0000000000600fc0 0 SECTION LOCAL DEFAULT 24

25: 0000000000000000 0 SECTION LOCAL DEFAULT 25

26: 0000000000000000 0 FILE LOCAL DEFAULT ABS /usr/src/lib/csu/amd64/crt1.c

27: 0000000000400218 24 OBJECT LOCAL DEFAULT 2 abitag

28: 0000000000400230 24 OBJECT LOCAL DEFAULT 2 crt_noinit_tag

29: 0000000000400870 83 FUNC LOCAL DEFAULT 13 finalizer

30: 0000000000000000 0 FILE LOCAL DEFAULT ABS /usr/src/gnu/lib/csu/../../../contrib/gcc/crtstuff.c

31: 0000000000600d70 8 OBJECT LOCAL DEFAULT 18 __CTOR_LIST__

32: 0000000000600d80 8 OBJECT LOCAL DEFAULT 19 __DTOR_LIST__

33: 0000000000600d90 0 OBJECT LOCAL DEFAULT 20 __JCR_LIST__

34: 00000000004008d0 53 FUNC LOCAL DEFAULT 13 __do_global_dtors_aux

35: 0000000000600fb0 1 OBJECT LOCAL DEFAULT 23 __do_global_dtors_aux.completed

36: 0000000000600fa8 8 OBJECT LOCAL DEFAULT 23 __do_global_dtors_aux.p

37: 0000000000400910 34 FUNC LOCAL DEFAULT 13 frame_dummy

38: 0000000000000000 0 FILE LOCAL DEFAULT ABS /usr/src/gnu/lib/csu/../../../contrib/gcc/crtstuff.c

39: 0000000000600d78 8 OBJECT LOCAL DEFAULT 18 __CTOR_END__

40: 0000000000600d88 8 OBJECT LOCAL DEFAULT 19 __DTOR_END__

41: 0000000000400d68 4 OBJECT LOCAL DEFAULT 17 __FRAME_END__

42: 0000000000600d90 8 OBJECT LOCAL DEFAULT 20 __JCR_END__

43: 0000000000400b70 54 FUNC LOCAL DEFAULT 13 __do_global_ctors_aux

44: 0000000000000000 0 FILE LOCAL DEFAULT ABS oreapp.c

45: 0000000000000000 0 FILE LOCAL DEFAULT ABS setmsg.c

46: 0000000000000000 0 FILE LOCAL DEFAULT ABS usage.c

47: 0000000000000000 0 FILE LOCAL DEFAULT ABS version.c

48: 0000000000000000 0 FILE LOCAL DEFAULT ABS indent.c

49: 0000000000600fd0 4096 OBJECT LOCAL DEFAULT 24 indent.buf

50: 0000000000600d6c 0 NOTYPE LOCAL HIDDEN 18 __preinit_array_start

51: 0000000000600d6c 0 NOTYPE LOCAL HIDDEN 18 __fini_array_end

52: 0000000000600f38 0 OBJECT LOCAL HIDDEN 22 _GLOBAL_OFFSET_TABLE_

53: 0000000000600d6c 0 NOTYPE LOCAL HIDDEN 18 __preinit_array_end

54: 0000000000600d6c 0 NOTYPE LOCAL HIDDEN 18 __fini_array_start

55: 0000000000600d6c 0 NOTYPE LOCAL HIDDEN 18 __init_array_end

56: 0000000000600d6c 0 NOTYPE LOCAL HIDDEN 18 __init_array_start

57: 0000000000600d98 0 OBJECT LOCAL HIDDEN 21 _DYNAMIC

58: 0000000000600fc0 4 OBJECT GLOBAL DEFAULT 24 optind@@FBSD_1.0

59: 00000000004006e0 390 FUNC GLOBAL DEFAULT 13 _start

60: 0000000000000000 0 NOTYPE WEAK DEFAULT UND _Jv_RegisterClasses

61: 0000000000600f98 8 OBJECT GLOBAL DEFAULT 23 __progname

62: 0000000000601fd8 8 OBJECT GLOBAL DEFAULT 24 _usage_msg

63: 0000000000400ba8 0 FUNC GLOBAL HIDDEN 14 _fini

64: 0000000000400a10 160 FUNC GLOBAL DEFAULT 13 setmsg

65: 0000000000000000 188 FUNC GLOBAL DEFAULT UND printf@@FBSD_1.0

66: 0000000000000000 71 FUNC GLOBAL DEFAULT UND atexit@@FBSD_1.0

67: 0000000000000000 6 FUNC GLOBAL DEFAULT UND _init_tls@@FBSD_1.0

68: 0000000000000000 239 FUNC GLOBAL DEFAULT UND fprintf@@FBSD_1.0

69: 0000000000000000 617 FUNC GLOBAL DEFAULT UND getopt@@FBSD_1.0

70: 0000000000400b10 90 FUNC GLOBAL DEFAULT 13 indent

71: 0000000000600fa0 8 OBJECT GLOBAL HIDDEN 23 __dso_handle

72: 0000000000601fe0 8 OBJECT GLOBAL DEFAULT 24 _version_msg

73: 0000000000400af0 31 FUNC GLOBAL DEFAULT 13 version

74: 0000000000000000 3171 FUNC GLOBAL DEFAULT UND calloc@@FBSD_1.0

75: 0000000000000000 76 FUNC GLOBAL DEFAULT UND strncpy@@FBSD_1.0

76: 0000000000600fb1 0 NOTYPE GLOBAL DEFAULT ABS __bss_start

77: 0000000000601fd0 8 OBJECT GLOBAL DEFAULT 24 environ

78: 0000000000601fe8 0 NOTYPE GLOBAL DEFAULT ABS _end

79: 0000000000400ab0 52 FUNC GLOBAL DEFAULT 13 usage

80: 0000000000000000 54 FUNC GLOBAL DEFAULT UND exit@@FBSD_1.0

81: 0000000000600fb1 0 NOTYPE GLOBAL DEFAULT ABS _edata

82: 0000000000600fc8 8 OBJECT GLOBAL DEFAULT 24 __stderrp@@FBSD_1.0

83: 0000000000000000 126 FUNC GLOBAL DEFAULT UND strcmp@@FBSD_1.0

84: 0000000000400940 196 FUNC GLOBAL DEFAULT 13 main

85: 0000000000400628 0 FUNC GLOBAL HIDDEN 11 _init

Histogram for bucket list length (total of 3 buckets):

Length Number % of total Coverage

0 0 ( 0.0%) 0.0%

1 0 ( 0.0%) 0.0%

2 1 ( 33.3%) 13.3%

3 0 ( 0.0%) 13.3%

4 0 ( 0.0%) 13.3%

5 0 ( 0.0%) 13.3%

6 1 ( 33.3%) 53.3%

7 1 ( 33.3%) 100.0%

Histogram for bucket list length (total of 3 buckets):

Length Number % of total Coverage

0 0 ( 0.0%) 0.0%

1 1 ( 33.3%) 25.0%

2 2 ( 66.7%) 125.0%

Version symbol section (.gnu.version):

000: 0 *local* 0 *local* 2 FBSD_1.0 2 FBSD_1.0

004: 2 FBSD_1.0 2 FBSD_1.0 2 FBSD_1.0 2 FBSD_1.0

008: 2 FBSD_1.0 2 FBSD_1.0 2 FBSD_1.0 1 *global*

00c: 1 *global* 1 *global* 2 FBSD_1.0 2 FBSD_1.0

Version needed section (.gnu.version_r):

0x0000 vn_version: 1 vn_file: libc.so.7 vn_cnt: 1

0x0010 vna_name: FBSD_1.0 vna_flags: 0 vna_other: 2

漢のUNIX 静的ライブラリをつくってみよう (vol.47掲載)

漢のUNIX　静的ライブラリをつくってみよう　(vol.47掲載)