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<title>Using as: Alpha Options</title>
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Alpha_002dDependent.html#Alpha_002dDependent" rel="up" title="Alpha-Dependent">
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<a name="Alpha-Options"></a>
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<div class="header">
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<p>
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Next: <a href="Alpha-Syntax.html#Alpha-Syntax" accesskey="n" rel="next">Alpha Syntax</a>, Previous: <a href="Alpha-Notes.html#Alpha-Notes" accesskey="p" rel="previous">Alpha Notes</a>, Up: <a href="Alpha_002dDependent.html#Alpha_002dDependent" accesskey="u" rel="up">Alpha-Dependent</a> [<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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<hr>
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<a name="Options-1"></a>
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<h4 class="subsection">9.2.2 Options</h4>
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<a name="index-Alpha-options"></a>
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<a name="index-options-for-Alpha"></a>
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<dl compact="compact">
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<dd><a name="index-_002dmcpu-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-m<var>cpu</var></code></dt>
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<dd><p>This option specifies the target processor. If an attempt is made to
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assemble an instruction which will not execute on the target processor,
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the assembler may either expand the instruction as a macro or issue an
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error message. This option is equivalent to the <code>.arch</code> directive.
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</p>
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<p>The following processor names are recognized:
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<code>21064</code>,
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<code>21064a</code>,
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<code>21066</code>,
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<code>21068</code>,
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<code>21164</code>,
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<code>21164a</code>,
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<code>21164pc</code>,
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<code>21264</code>,
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<code>21264a</code>,
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<code>21264b</code>,
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<code>ev4</code>,
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<code>ev5</code>,
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<code>lca45</code>,
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<code>ev5</code>,
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<code>ev56</code>,
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<code>pca56</code>,
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<code>ev6</code>,
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<code>ev67</code>,
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<code>ev68</code>.
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The special name <code>all</code> may be used to allow the assembler to accept
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instructions valid for any Alpha processor.
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</p>
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<p>In order to support existing practice in OSF/1 with respect to <code>.arch</code>,
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and existing practice within <code>MILO</code> (the Linux ARC bootloader), the
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numbered processor names (e.g. 21064) enable the processor-specific PALcode
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instructions, while the “electro-vlasic” names (e.g. <code>ev4</code>) do not.
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</p>
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<a name="index-_002dmdebug-command_002dline-option_002c-Alpha"></a>
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<a name="index-_002dno_002dmdebug-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-mdebug</code></dt>
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<dt><code>-no-mdebug</code></dt>
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<dd><p>Enables or disables the generation of <code>.mdebug</code> encapsulation for
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stabs directives and procedure descriptors. The default is to automatically
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enable <code>.mdebug</code> when the first stabs directive is seen.
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</p>
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<a name="index-_002drelax-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-relax</code></dt>
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<dd><p>This option forces all relocations to be put into the object file, instead
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of saving space and resolving some relocations at assembly time. Note that
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this option does not propagate all symbol arithmetic into the object file,
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because not all symbol arithmetic can be represented. However, the option
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can still be useful in specific applications.
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</p>
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<a name="index-_002dreplace-command_002dline-option_002c-Alpha"></a>
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<a name="index-_002dnoreplace-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-replace</code></dt>
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<dt><code>-noreplace</code></dt>
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<dd><p>Enables or disables the optimization of procedure calls, both at assemblage
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and at link time. These options are only available for VMS targets and
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<code>-replace</code> is the default. See section 1.4.1 of the OpenVMS Linker
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Utility Manual.
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</p>
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<a name="index-_002dg-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-g</code></dt>
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<dd><p>This option is used when the compiler generates debug information. When
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<code>gcc</code> is using <code>mips-tfile</code> to generate debug
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information for ECOFF, local labels must be passed through to the object
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file. Otherwise this option has no effect.
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</p>
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<a name="index-_002dG-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-G<var>size</var></code></dt>
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<dd><p>A local common symbol larger than <var>size</var> is placed in <code>.bss</code>,
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while smaller symbols are placed in <code>.sbss</code>.
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</p>
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<a name="index-_002dF-command_002dline-option_002c-Alpha"></a>
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<a name="index-_002d32addr-command_002dline-option_002c-Alpha"></a>
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</dd>
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<dt><code>-F</code></dt>
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<dt><code>-32addr</code></dt>
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<dd><p>These options are ignored for backward compatibility.
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</p></dd>
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</dl>
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<a name="index-Alpha-Syntax"></a>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Alpha-Syntax.html#Alpha-Syntax" accesskey="n" rel="next">Alpha Syntax</a>, Previous: <a href="Alpha-Notes.html#Alpha-Notes" accesskey="p" rel="previous">Alpha Notes</a>, Up: <a href="Alpha_002dDependent.html#Alpha_002dDependent" accesskey="u" rel="up">Alpha-Dependent</a> [<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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