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<a name="TILEPro-Modifiers"></a>
<div class="header">
<p>
Previous: <a href="TILEPro-Registers.html#TILEPro-Registers" accesskey="p" rel="prev">TILEPro Registers</a>, Up: <a href="TILEPro-Syntax.html#TILEPro-Syntax" accesskey="u" rel="up">TILEPro Syntax</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Symbolic-Operand-Modifiers-5"></a>
<h4 class="subsubsection">9.47.2.3 Symbolic Operand Modifiers</h4>
<a name="index-TILEPro-modifiers"></a>
<a name="index-symbol-modifiers_002c-TILEPro"></a>

<p>The assembler supports several modifiers when using symbol addresses
in TILEPro instruction operands.  The general syntax is the following:
</p>
<div class="smallexample">
<pre class="smallexample">modifier(symbol)
</pre></div>

<p>The following modifiers are supported:
</p>
<dl compact="compact">
<dt><code>lo16</code></dt>
<dd>
<p>This modifier is used to load the low 16 bits of the symbol&rsquo;s address,
sign-extended to a 32-bit value (sign-extension allows it to be
range-checked against signed 16 bit immediate operands without
complaint).
</p>
</dd>
<dt><code>hi16</code></dt>
<dd>
<p>This modifier is used to load the high 16 bits of the symbol&rsquo;s
address, also sign-extended to a 32-bit value.
</p>
</dd>
<dt><code>ha16</code></dt>
<dd>
<p><code>ha16(N)</code> is identical to <code>hi16(N)</code>, except if
<code>lo16(N)</code> is negative it adds one to the <code>hi16(N)</code>
value. This way <code>lo16</code> and <code>ha16</code> can be added to create any
32-bit value using <code>auli</code>.  For example, here is how you move an
arbitrary 32-bit address into r3:
</p>
<div class="smallexample">
<pre class="smallexample">moveli r3, lo16(sym)
auli r3, r3, ha16(sym)
</pre></div>

</dd>
<dt><code>got</code></dt>
<dd>
<p>This modifier is used to load the offset of the GOT entry
corresponding to the symbol.
</p>
</dd>
<dt><code>got_lo16</code></dt>
<dd>
<p>This modifier is used to load the sign-extended low 16 bits of the
offset of the GOT entry corresponding to the symbol.
</p>
</dd>
<dt><code>got_hi16</code></dt>
<dd>
<p>This modifier is used to load the sign-extended high 16 bits of the
offset of the GOT entry corresponding to the symbol.
</p>
</dd>
<dt><code>got_ha16</code></dt>
<dd>
<p>This modifier is like <code>got_hi16</code>, but it adds one if
<code>got_lo16</code> of the input value is negative.
</p>
</dd>
<dt><code>plt</code></dt>
<dd>
<p>This modifier is used for function symbols.  It causes a
<em>procedure linkage table</em>, an array of code stubs, to be created
at the time the shared object is created or linked against, together
with a global offset table entry.  The value is a pc-relative offset
to the corresponding stub code in the procedure linkage table.  This
arrangement causes the run-time symbol resolver to be called to look
up and set the value of the symbol the first time the function is
called (at latest; depending environment variables).  It is only safe
to leave the symbol unresolved this way if all references are function
calls.
</p>
</dd>
<dt><code>tls_gd</code></dt>
<dd>
<p>This modifier is used to load the offset of the GOT entry of the
symbol&rsquo;s TLS descriptor, to be used for general-dynamic TLS accesses.
</p>
</dd>
<dt><code>tls_gd_lo16</code></dt>
<dd>
<p>This modifier is used to load the sign-extended low 16 bits of the
offset of the GOT entry of the symbol&rsquo;s TLS descriptor, to be used for
general dynamic TLS accesses.
</p>
</dd>
<dt><code>tls_gd_hi16</code></dt>
<dd>
<p>This modifier is used to load the sign-extended high 16 bits of the
offset of the GOT entry of the symbol&rsquo;s TLS descriptor, to be used for
general dynamic TLS accesses.
</p>
</dd>
<dt><code>tls_gd_ha16</code></dt>
<dd>
<p>This modifier is like <code>tls_gd_hi16</code>, but it adds one to the value
if <code>tls_gd_lo16</code> of the input value is negative.
</p>
</dd>
<dt><code>tls_ie</code></dt>
<dd>
<p>This modifier is used to load the offset of the GOT entry containing
the offset of the symbol&rsquo;s address from the TCB, to be used for
initial-exec TLS accesses.
</p>
</dd>
<dt><code>tls_ie_lo16</code></dt>
<dd>
<p>This modifier is used to load the low 16 bits of the offset of the GOT
entry containing the offset of the symbol&rsquo;s address from the TCB, to
be used for initial-exec TLS accesses.
</p>
</dd>
<dt><code>tls_ie_hi16</code></dt>
<dd>
<p>This modifier is used to load the high 16 bits of the offset of the
GOT entry containing the offset of the symbol&rsquo;s address from the TCB,
to be used for initial-exec TLS accesses.
</p>
</dd>
<dt><code>tls_ie_ha16</code></dt>
<dd>
<p>This modifier is like <code>tls_ie_hi16</code>, but it adds one to the value
if <code>tls_ie_lo16</code> of the input value is negative.
</p>
</dd>
<dt><code>tls_le</code></dt>
<dd>
<p>This modifier is used to load the offset of the symbol&rsquo;s address from
the TCB, to be used for local-exec TLS accesses.
</p>
</dd>
<dt><code>tls_le_lo16</code></dt>
<dd>
<p>This modifier is used to load the low 16 bits of the offset of the
symbol&rsquo;s address from the TCB, to be used for local-exec TLS accesses.
</p>
</dd>
<dt><code>tls_le_hi16</code></dt>
<dd>
<p>This modifier is used to load the high 16 bits of the offset of the
symbol&rsquo;s address from the TCB, to be used for local-exec TLS accesses.
</p>
</dd>
<dt><code>tls_le_ha16</code></dt>
<dd>
<p>This modifier is like <code>tls_le_hi16</code>, but it adds one to the value
if <code>tls_le_lo16</code> of the input value is negative.
</p>
</dd>
<dt><code>tls_gd_call</code></dt>
<dd>
<p>This modifier is used to tag an instrution as the &ldquo;call&rdquo; part of a
calling sequence for a TLS GD reference of its operand.
</p>
</dd>
<dt><code>tls_gd_add</code></dt>
<dd>
<p>This modifier is used to tag an instruction as the &ldquo;add&rdquo; part of a
calling sequence for a TLS GD reference of its operand.
</p>
</dd>
<dt><code>tls_ie_load</code></dt>
<dd>
<p>This modifier is used to tag an instruction as the &ldquo;load&rdquo; part of a
calling sequence for a TLS IE reference of its operand.
</p>
</dd>
</dl>

<hr>
<div class="header">
<p>
Previous: <a href="TILEPro-Registers.html#TILEPro-Registers" accesskey="p" rel="prev">TILEPro Registers</a>, Up: <a href="TILEPro-Syntax.html#TILEPro-Syntax" accesskey="u" rel="up">TILEPro Syntax</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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