Description The GNU objcopy utility copies the contents of an object file to another. objcopy uses the GNU BFD Library to read and write the object files. It can write the destination object file in a format different from that of the source object file.
Full Answer
What is objcopy in GNU?
The gnu objcopy utility copies the contents of an object file to another. objcopy uses the gnu bfd Library to read and write the object files. It can write the destination object file in a format different from that of the source object file.
How to show the version number of an objcopy?
Show the version number of objcopy . Verbose output: list all object files modified. In the case of archives, ` objcopy -V ' lists all members of the archive. Show a summary of the options to objcopy .
How do I use objcopy to generate s record?
objcopy can be used to generate S-records by using an output target of ‘ srec ’ (e.g., use ‘ -O srec ’). objcopy can be used to generate a raw binary file by using an output target of ‘ binary ’ (e.g., use -O binary ). When objcopy generates a raw binary file, it will essentially produce a memory dump of the contents of the input object file.
Why can’t objcopy copy the inputs into a specific file format?
If the input format has an endianness (some formats do not), objcopy can only copy the inputs into file formats that have the same endianness or which have no endianness (e.g., srec ). The input and output files, respectively.
What is objcopy in GNU?
The GNU objcopy utility copies the contents of an object file to another. objcopy uses the GNU BFD Library to read and write the object files. It can write the destination object file in a format different from that of the source object file. The exact behavior of objcopy is controlled by command-line options.
What happens if you don't specify outfile in objcopy?
The input and output files, respectively. If you do not specify outfile, objcopy creates a temporary file and destructively renames the result with the name of infile .
What is verbose output?
Verbose output: list all object files modified. In the case of archives, objcopy -V lists all members of the archive.
What is underscore in objcopy?
The most common such character is underscore, which compilers often add before every symbol. This option tells objcopy to change the leading character of every symbol when it converts between object file formats. If the object file formats use the same leading character, this option has no effect.
When stripping a file, perhaps with --strip-debug or --strip-unneeded, what?
When stripping a file, perhaps with --strip-debug or --strip-unneeded, retain any symbols specifying source file names, which would otherwise get stripped.
Can you copy only the named section from the input file to the output file?
This option may be given more than once. Note that using this option inappropriately may make the output file unusable.
Does objcopy work between two formats?
However, copying a relocatable object file between any two formats may not work as expected. objcopy creates temporary files to do its translations and deletes them afterward. objcopy uses BFD to do all its translation work; it has access to all the formats described in BFD and thus is able to recognize most formats without being told explicitly.
What is objcopy in GNU?
The gnu objcopy utility copies the contents of an object file to another. objcopy uses the gnu bfd Library to read and write the object files. It can write the destination object file in a format different from that of the source object file. The exact behavior of objcopy is controlled by command-line options. Note that objcopy should be able to copy a fully linked file between any two formats. However, copying a relocatable object file between any two formats may not work as expected.
How does objcopy work?
objcopy can be used to generate a raw binary file by using an output target of ` binary ' (e.g., use -O binary ). When objcopy generates a raw binary file, it will essentially produce a memory dump of the contents of the input object file. All symbols and relocation information will be discarded.
What is the range of bytes to keep at the byte th byte?
If interleaving has been enabled via the --interleave option then start the range of bytes to keep at the byte th byte. byte can be in the range from 0 to breadth -1, where breadth is the value given by the --interleave option.
What mode does a copy of an archive use?
Operate in deterministic mode. When copying archive members and writing the archive index, use zero for UIDs, GIDs, timestamps, and use consistent file modes for all files.
What happens if you don't specify outfile in objcopy?
The input and output files, respectively. If you do not specify outfile, objcopy creates a temporary file and destructively renames the result with the name of infile .
Why do we give symbol symbolname global scoping?
Give symbol symbolname global scoping so that it is visible outside of the file in which it is defined. This option may be given more than once.
When generating an S-record or a raw binary file, it may be helpful to use -S?
When generating an S-record or a raw binary file, it may be helpful to use -S to remove sections containing debugging information. In some cases -R will be useful to remove sections which contain information that is not needed by the binary file.
What is objcopy in GNU?
The GNU objcopy utility copies the contents of an object file to another. objcopy uses the GNU BFD Library to read and write the object files. It can write the destination object file in a format different from that of the source object file. The exact behavior of objcopy is controlled by command-line options.
How does objcopy work?
objcopy can be used to generate a raw binary file by using an output target of binary (e.g., use -O binary ). When objcopy generates a raw binary file, it will essentially produce a memory dump of the contents of the input object file. All symbols and relocation information will be discarded.
What is the GNU Free Documentation License?
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
What happens if you don't specify outfile in objcopy?
The input and output files, respectively. If you do not specify outfile, objcopy creates a temporary file and destructively renames the result with the name of infile .
Why do we give symbol symbolname global scoping?
Give symbol symbolname global scoping so that it is visible outside of the file in which it is defined. This option may be given more than once.
What is underscore in objcopy?
The most common such character is underscore, which compilers often add before every symbol. This option tells objcopy to change the leading character of every symbol when it converts between object file formats. If the object file formats use the same leading character, this option has no effect.
When generating an S-record or a raw binary file, it may be helpful to use -S?
When generating an S-record or a raw binary file, it may be helpful to use -S to remove sections containing debugging information. In some cases -R will be useful to remove sections which contain information that is not needed by the binary file.
What is objcopy in GNU?
The GNU objcopy utility copies the contents of an object file to another. objcopy uses the GNU BFD Library to read and write the object files. It can write the destination object file in a format different from that of the source object file. The exact behavior of objcopy is controlled by command-line options.
How does objcopy work?
objcopy can be used to generate a raw binary file by using an output target of `binary' (e.g., use `-O binary' ). When objcopy generates a raw binary file, it will essentially produce a memory dump of the contents of the input object file. All symbols and relocation information will be discarded.
What happens if you don't specify outfile in objcopy?
The input and output files, respectively. If you do not specify outfile, objcopy creates a temporary file and destructively renames the result with the name of infile .
How to localize symbol in filename?
Apply `--localize-symbol' option to each symbol listed in the file filename. filename is simply a flat file, with one symbol name per line. Line comments may be introduced by the hash character. This option may be given more than once.
What is underscore in objcopy?
The most common such character is underscore, which compilers often add before every symbol. This option tells objcopy to change the leading character of every symbol when it converts between object file formats. If the object file formats use the same leading character, this option has no effect.
Can you copy symbol name more than once?
Copy only symbol symbolname from the source file. This option may be given more than once.
Can you copy only the named section from the input file to the output file?
This option may be given more than once. Note that using this option inappropriately may make the output file unusable.
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