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- <title>Orphan Sections (LD)</title>
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- Next: <a href="Location-Counter.html#Location-Counter" accesskey="n" rel="next">Location Counter</a>, Previous: <a href="Symbols.html#Symbols" accesskey="p" rel="prev">Symbols</a>, Up: <a href="Expressions.html#Expressions" accesskey="u" rel="up">Expressions</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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- <a name="Orphan-Sections-1"></a>
- <h4 class="subsection">3.10.4 Orphan Sections</h4>
- <a name="index-orphan"></a>
- <p>Orphan sections are sections present in the input files which
- are not explicitly placed into the output file by the linker
- script. The linker will still copy these sections into the
- output file by either finding, or creating a suitable output section
- in which to place the orphaned input section.
- </p>
- <p>If the name of an orphaned input section exactly matches the name of
- an existing output section, then the orphaned input section will be
- placed at the end of that output section.
- </p>
- <p>If there is no output section with a matching name then new output
- sections will be created. Each new output section will have the same
- name as the orphan section placed within it. If there are multiple
- orphan sections with the same name, these will all be combined into
- one new output section.
- </p>
- <p>If new output sections are created to hold orphaned input sections,
- then the linker must decide where to place these new output sections
- in relation to existing output sections. On most modern targets, the
- linker attempts to place orphan sections after sections of the same
- attribute, such as code vs data, loadable vs non-loadable, etc. If no
- sections with matching attributes are found, or your target lacks this
- support, the orphan section is placed at the end of the file.
- </p>
- <p>The command-line options ‘<samp>--orphan-handling</samp>’ and ‘<samp>--unique</samp>’
- (see <a href="Options.html#Options">Command-line Options</a>) can be used to control which
- output sections an orphan is placed in.
- </p>
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