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| <a name="i960"></a> |
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| Next: <a href="M68HC11_002f68HC12.html#M68HC11_002f68HC12" accesskey="n" rel="next">M68HC11/68HC12</a>, Previous: <a href="H8_002f300.html#H8_002f300" accesskey="p" rel="prev">H8/300</a>, Up: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="u" rel="up">Machine Dependent</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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| <hr> |
| <a name="ld-and-the-Intel-960-Family"></a> |
| <h3 class="section">4.2 <code>ld</code> and the Intel 960 Family</h3> |
| |
| <a name="index-i960-support"></a> |
| |
| <p>You can use the ‘<samp>-A<var>architecture</var></samp>’ command line option to |
| specify one of the two-letter names identifying members of the 960 |
| family; the option specifies the desired output target, and warns of any |
| incompatible instructions in the input files. It also modifies the |
| linker’s search strategy for archive libraries, to support the use of |
| libraries specific to each particular architecture, by including in the |
| search loop names suffixed with the string identifying the architecture. |
| </p> |
| <p>For example, if your <code>ld</code> command line included ‘<samp><span class="nolinebreak">-ACA</span></samp>’<!-- /@w --> as |
| well as ‘<samp><span class="nolinebreak">-ltry</span></samp>’<!-- /@w -->, the linker would look (in its built-in search |
| paths, and in any paths you specify with ‘<samp>-L</samp>’) for a library with |
| the names |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">try |
| libtry.a |
| tryca |
| libtryca.a |
| </pre></div> |
| |
| <p>The first two possibilities would be considered in any event; the last |
| two are due to the use of ‘<samp><span class="nolinebreak">-ACA</span></samp>’<!-- /@w -->. |
| </p> |
| <p>You can meaningfully use ‘<samp>-A</samp>’ more than once on a command line, since |
| the 960 architecture family allows combination of target architectures; each |
| use will add another pair of name variants to search for when ‘<samp><span class="nolinebreak">-l</span></samp>’<!-- /@w --> |
| specifies a library. |
| </p> |
| <a name="index-_002d_002drelax-on-i960"></a> |
| <a name="index-relaxing-on-i960"></a> |
| <p><code>ld</code> supports the ‘<samp>--relax</samp>’ option for the i960 family. If |
| you specify ‘<samp>--relax</samp>’, <code>ld</code> finds all <code>balx</code> and |
| <code>calx</code> instructions whose targets are within 24 bits, and turns |
| them into 24-bit program-counter relative <code>bal</code> and <code>cal</code> |
| instructions, respectively. <code>ld</code> also turns <code>cal</code> |
| instructions into <code>bal</code> instructions when it determines that the |
| target subroutine is a leaf routine (that is, the target subroutine does |
| not itself call any subroutines). |
| </p> |
| <a name="index-Cortex_002dA8-erratum-workaround"></a> |
| <a name="index-_002d_002dfix_002dcortex_002da8"></a> |
| <a name="index-_002d_002dno_002dfix_002dcortex_002da8"></a> |
| <p>The ‘<samp>--fix-cortex-a8</samp>’ switch enables a link-time workaround for an erratum in certain Cortex-A8 processors. The workaround is enabled by default if you are targeting the ARM v7-A architecture profile. It can be enabled otherwise by specifying ‘<samp>--fix-cortex-a8</samp>’, or disabled unconditionally by specifying ‘<samp>--no-fix-cortex-a8</samp>’. |
| </p> |
| <p>The erratum only affects Thumb-2 code. Please contact ARM for further details. |
| </p> |
| <a name="index-Cortex_002dA53-erratum-835769-workaround"></a> |
| <a name="index-_002d_002dfix_002dcortex_002da53_002d835769"></a> |
| <a name="index-_002d_002dno_002dfix_002dcortex_002da53_002d835769"></a> |
| <p>The ‘<samp>--fix-cortex-a53-835769</samp>’ switch enables a link-time workaround for erratum 835769 present on certain early revisions of Cortex-A53 processors. The workaround is disabled by default. It can be enabled by specifying ‘<samp>--fix-cortex-a53-835769</samp>’, or disabled unconditionally by specifying ‘<samp>--no-fix-cortex-a53-835769</samp>’. |
| </p> |
| <p>Please contact ARM for further details. |
| </p> |
| <a name="index-_002d_002dmerge_002dexidx_002dentries"></a> |
| <a name="index-_002d_002dno_002dmerge_002dexidx_002dentries-1"></a> |
| <p>The ‘<samp>--no-merge-exidx-entries</samp>’ switch disables the merging of adjacent exidx entries in debuginfo. |
| </p> |
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| Next: <a href="M68HC11_002f68HC12.html#M68HC11_002f68HC12" accesskey="n" rel="next">M68HC11/68HC12</a>, Previous: <a href="H8_002f300.html#H8_002f300" accesskey="p" rel="prev">H8/300</a>, Up: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="u" rel="up">Machine Dependent</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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