dump(1)

Synopsis

   dump options file . . .

Description

This command will accept both object files and archives of object files. It processes each file argument according to one or more of the following options:

-a

Dump the archive header of each member of an archive.

-C

Decode C++ symbol table names before dumping.

-c

Dump the string table(s).

-D

Dump debugging information.

-f

Dump each file header.

-g

Dump the global symbols in the symbol table of an archive.

-h

Dump the section headers.

-L

Dump dynamic linking information and static shared library information, if available.

-l

Dump line number information.

-o

Dump each program execution header.

-r

Dump relocation information.

-s

Dump section contents in hexadecimal.

-T index or -T index1,index2

Dump only the indexed symbol table entry defined by index or a range of entries defined by index1,index2.

-t

Dump symbol table entries.

-u

When reading a COFF object file, dump translates the file to ELF internally (this translation does not affect the file contents). This option controls how much translation occurs from COFF values to ELF. Normally (without -u), the COFF values are preserved as much as possible, showing the actual bytes in the file. If -u is used, dump updates the values and completes the internal translation, giving a consistent ELF view of the contents. Although the bytes displayed under this option might not match the file itself, they show how the file would look if it were converted to ELF. (See cof2elf(1) for more information.)

-V

Print version information.

-w

Size of words to print for raw dumps: can be 1, 2, 4 or 8.

-Y index or -Y index1,index2

Dump only the indexed dynamic symbol table entry defined by index or a ranges of entries defined by index1, index2. This option dumps symbols from sections of type SHT_DYNSYM, instead of SHT_SYMTAB, as used by the -T option.

-y

Dump dynamic symbol table. This option dumps sections of type SHT_DYNSYM, instead of SHT_SYMTAB, as used by the -t option.

The following modifiers are used in conjunction with the options listed above to modify their capabilities.

-d number or -d number1,number2

Dump the section number indicated by number or the range of sections starting at number1 and ending at number2. This modifier can be used with -h, -s, and -r. When -d is used with -h or -s, the argument is treated as the number of a section or range of sections. When -d is used with -r, the argument is treated as the number of the section or range of sections to which the relocation applies. For example, to print out all relocation entries associated with the ``.text'' section, specify the number of the section as the argument to -d. If ``.text'' is section number 2 in the file, dump -r -d 2 will print all associated entries. To print out a specific relocation section use dump -s -n name for raw data output, or dump -sv -n name for interpreted output.

-n name

Dump information pertaining only to the named entity. This modifier can be used with -h, -s, -r, and -t. When -n is used with -h or -s, the argument will be treated as the name of a section. When -n is used with -t or -r, the argument will be treated as the name of a symbol. For example, dump -t -n .text will dump the symbol table entry associated with the symbol whose name is ``.text'', where dump -h -n .text will dump the section header information for the ``.text'' section.

-p

Suppress printing of the headings.

-v

Dump information in symbolic representation rather than numeric. This modifier can be used with -a (date, user id, group id), -f (class, data, type, machine, version, flags), -h (type, flags), -o (type, flags), -r (name, type), -s (interpret section contents wherever possible), -t (type, bind), and -L (value). When -v is used with -s, all sections that can be interpreted, such as the string table or symbol table, will be interpreted. For example, dump -sv -n .symtab file will produce the same formatted output as dump -tv file, but dump -s -n .symtab file will print raw data in hexadecimal. Without additional modifiers, dump -sv file will dump all sections in file interpreting all those that it can and dumping the rest (such as ``.text'' or ``.data'') as raw data.

The dump command attempts to format the information it dumps in a meaningful way, printing certain information in character, hexadecimal, octal or decimal representation as appropriate.

References