动态连接-8 readelf -d ,ldd

最新推荐文章于 2025-04-07 13:58:51 发布

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最新推荐文章于 2025-04-07 13:58:51 发布

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分类专栏：语言-c-glibc-posix 文章标签： library file null c

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[root@localhost mhello]# readelf -d hello

Dynamic section at offset 0x7a8 contains 21 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [file_b.so]
 0x00000001 (NEEDED)                     Shared library: [libc.so.6]
 0x0000000c (INIT)                       0x80483c8
 0x0000000d (FINI)                       0x804867c
 0x6ffffef5 (GNU_HASH)                   0x804818c
 0x00000005 (STRTAB)                     0x80482a8
 0x00000006 (SYMTAB)                     0x80481c8
 0x0000000a (STRSZ)                      177 (bytes)
 0x0000000b (SYMENT)                     16 (bytes)
 0x00000015 (DEBUG)                      0x0
 0x00000003 (PLTGOT)                     0x804987c
 0x00000002 (PLTRELSZ)                   40 (bytes)
 0x00000014 (PLTREL)                     REL
 0x00000017 (JMPREL)                     0x80483a0
 0x00000011 (REL)                        0x8048398
 0x00000012 (RELSZ)                      8 (bytes)
 0x00000013 (RELENT)                     8 (bytes)
 0x6ffffffe (VERNEED)                    0x8048378
 0x6fffffff (VERNEEDNUM)                 1
 0x6ffffff0 (VERSYM)                     0x804835a
 0x00000000 (NULL)                       0x0

[root@localhost mhello]# ldd hello
	linux-gate.so.1 =>  (0x00110000)
	file_b.so => /lib/file_b.so (0x00111000)
	libc.so.6 => /lib/libc.so.6 (0x007f0000)
	/lib/ld-linux.so.2 (0x007d0000)


	
[root@localhost mhello]# readelf -d file_b.so

Dynamic section at offset 0x5e4 contains 21 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [libc.so.6]
 0x0000000c (INIT)                       0x37c
 0x0000000d (FINI)                       0x548
 0x6ffffef5 (GNU_HASH)                   0xf8
 0x00000005 (STRTAB)                     0x208
 0x00000006 (SYMTAB)                     0x138
 0x0000000a (STRSZ)                      161 (bytes)
 0x0000000b (SYMENT)                     16 (bytes)
 0x00000003 (PLTGOT)                     0x16b8
 0x00000002 (PLTRELSZ)                   16 (bytes)
 0x00000014 (PLTREL)                     REL
 0x00000017 (JMPREL)                     0x36c
 0x00000011 (REL)                        0x2f4
 0x00000012 (RELSZ)                      120 (bytes)
 0x00000013 (RELENT)                     8 (bytes)
 0x00000016 (TEXTREL)                    0x0
 0x6ffffffe (VERNEED)                    0x2c4
 0x6fffffff (VERNEEDNUM)                 1
 0x6ffffff0 (VERSYM)                     0x2aa
 0x6ffffffa (RELCOUNT)                   6
 0x00000000 (NULL)                       0x0
 
[root@localhost mhello]# ldd file_b.so
	linux-gate.so.1 =>  (0x00110000)
	libc.so.6 => /lib/libc.so.6 (0x00113000)
	/lib/ld-linux.so.2 (0x007d0000)
[root@localhost mhello]#