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- <a name="eBPF-Options"></a>
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- Next: <a href="FR30-Options.html#FR30-Options" accesskey="n" rel="next">FR30 Options</a>, Previous: <a href="DEC-Alpha-Options.html#DEC-Alpha-Options" accesskey="p" rel="prev">DEC Alpha Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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- <a name="eBPF-Options-1"></a>
- <h4 class="subsection">3.19.14 eBPF Options</h4>
- <a name="index-eBPF-Options"></a>
-
- <dl compact="compact">
- <dt><code>-mframe-limit=<var>bytes</var></code></dt>
- <dd><p>This specifies the hard limit for frame sizes, in bytes. Currently,
- the value that can be specified should be less than or equal to
- ‘<samp>32767</samp>’. Defaults to whatever limit is imposed by the version of
- the Linux kernel targeted.
- </p>
- </dd>
- <dt><code>-mkernel=<var>version</var></code></dt>
- <dd><a name="index-mkernel-1"></a>
- <p>This specifies the minimum version of the kernel that will run the
- compiled program. GCC uses this version to determine which
- instructions to use, what kernel helpers to allow, etc. Currently,
- <var>version</var> can be one of ‘<samp>4.0</samp>’, ‘<samp>4.1</samp>’, ‘<samp>4.2</samp>’,
- ‘<samp>4.3</samp>’, ‘<samp>4.4</samp>’, ‘<samp>4.5</samp>’, ‘<samp>4.6</samp>’, ‘<samp>4.7</samp>’,
- ‘<samp>4.8</samp>’, ‘<samp>4.9</samp>’, ‘<samp>4.10</samp>’, ‘<samp>4.11</samp>’, ‘<samp>4.12</samp>’,
- ‘<samp>4.13</samp>’, ‘<samp>4.14</samp>’, ‘<samp>4.15</samp>’, ‘<samp>4.16</samp>’, ‘<samp>4.17</samp>’,
- ‘<samp>4.18</samp>’, ‘<samp>4.19</samp>’, ‘<samp>4.20</samp>’, ‘<samp>5.0</samp>’, ‘<samp>5.1</samp>’,
- ‘<samp>5.2</samp>’, ‘<samp>latest</samp>’ and ‘<samp>native</samp>’.
- </p>
- </dd>
- <dt><code>-mbig-endian</code></dt>
- <dd><a name="index-mbig_002dendian-5"></a>
- <p>Generate code for a big-endian target.
- </p>
- </dd>
- <dt><code>-mlittle-endian</code></dt>
- <dd><a name="index-mlittle_002dendian-5"></a>
- <p>Generate code for a little-endian target. This is the default.
- </p>
- </dd>
- <dt><code>-mxbpf</code></dt>
- <dd><p>Generate code for an expanded version of BPF, which relaxes some of
- the restrictions imposed by the BPF architecture:
- </p><ul class="no-bullet">
- <li>- Save and restore callee-saved registers at function entry and
- exit, respectively.
- </li></ul>
- </dd>
- </dl>
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