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- <title>AArch64 Mapping Symbols (Using as)</title>
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- <h4 class="subsection">9.1.7 Mapping Symbols</h4>
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- <p>The AArch64 ELF specification requires that special symbols be inserted
- into object files to mark certain features:
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- <dt><code>$x</code></dt>
- <dd><p>At the start of a region of code containing AArch64 instructions.
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- <dt><code>$d</code></dt>
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