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16<title>Using as: ARC Options</title>
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63<a name="ARC-Options"></a>
64<div class="header">
65<p>
66Next: <a href="ARC-Syntax.html#ARC-Syntax" accesskey="n" rel="next">ARC Syntax</a>, Up: <a href="ARC_002dDependent.html#ARC_002dDependent" accesskey="u" rel="up">ARC-Dependent</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>
67</div>
68<hr>
69<a name="Options-2"></a>
70<h4 class="subsection">9.3.1 Options</h4>
71<a name="index-ARC-options"></a>
72<a name="index-options-for-ARC"></a>
73
74<p>The following options control the type of CPU for which code is
75assembled, and generic constraints on the code generated:
76</p>
77<dl compact="compact">
78<dt><code>-mcpu=<var>cpu</var></code></dt>
79<dd><a name="index-_002dmcpu_003dcpu-command_002dline-option_002c-ARC"></a>
80<p>Set architecture type and register usage for <var>cpu</var>.  There are
81also shortcut alias options available for backward compatibility and
82convenience.  Supported values for <var>cpu</var> are
83</p>
84<dl compact="compact">
85<dd><a name="index-mA6-command_002dline-option_002c-ARC"></a>
86<a name="index-marc600-command_002dline-option_002c-ARC"></a>
87</dd>
88<dt><code>arc600</code></dt>
89<dd><p>Assemble for ARC 600.  Aliases: <code>-mA6</code>, <code>-mARC600</code>.
90</p>
91</dd>
92<dt><code>arc600_norm</code></dt>
93<dd><p>Assemble for ARC 600 with norm instructions.
94</p>
95</dd>
96<dt><code>arc600_mul64</code></dt>
97<dd><p>Assemble for ARC 600 with mul64 instructions.
98</p>
99</dd>
100<dt><code>arc600_mul32x16</code></dt>
101<dd><p>Assemble for ARC 600 with mul32x16 instructions.
102</p>
103</dd>
104<dt><code>arc601</code></dt>
105<dd><a name="index-mARC601-command_002dline-option_002c-ARC"></a>
106<p>Assemble for ARC 601.  Alias: <code>-mARC601</code>.
107</p>
108</dd>
109<dt><code>arc601_norm</code></dt>
110<dd><p>Assemble for ARC 601 with norm instructions.
111</p>
112</dd>
113<dt><code>arc601_mul64</code></dt>
114<dd><p>Assemble for ARC 601 with mul64 instructions.
115</p>
116</dd>
117<dt><code>arc601_mul32x16</code></dt>
118<dd><p>Assemble for ARC 601 with mul32x16 instructions.
119</p>
120</dd>
121<dt><code>arc700</code></dt>
122<dd><a name="index-mA7-command_002dline-option_002c-ARC"></a>
123<a name="index-mARC700-command_002dline-option_002c-ARC"></a>
124<p>Assemble for ARC 700.  Aliases: <code>-mA7</code>, <code>-mARC700</code>.
125</p>
126</dd>
127<dt><code>arcem</code></dt>
128<dd><a name="index-mEM-command_002dline-option_002c-ARC"></a>
129<p>Assemble for ARC EM.  Aliases: <code>-mEM</code>
130</p>
131</dd>
132<dt><code>em</code></dt>
133<dd><p>Assemble for ARC EM, identical as arcem variant.
134</p>
135</dd>
136<dt><code>em4</code></dt>
137<dd><p>Assemble for ARC EM with code-density instructions.
138</p>
139</dd>
140<dt><code>em4_dmips</code></dt>
141<dd><p>Assemble for ARC EM with code-density instructions.
142</p>
143</dd>
144<dt><code>em4_fpus</code></dt>
145<dd><p>Assemble for ARC EM with code-density instructions.
146</p>
147</dd>
148<dt><code>em4_fpuda</code></dt>
149<dd><p>Assemble for ARC EM with code-density, and double-precision assist
150instructions.
151</p>
152</dd>
153<dt><code>quarkse_em</code></dt>
154<dd><p>Assemble for QuarkSE-EM cpu.
155</p>
156</dd>
157<dt><code>archs</code></dt>
158<dd><a name="index-mHS-command_002dline-option_002c-ARC"></a>
159<p>Assemble for ARC HS.  Aliases: <code>-mHS</code>, <code>-mav2hs</code>.
160</p>
161</dd>
162<dt><code>hs</code></dt>
163<dd><p>Assemble for ARC HS.
164</p>
165</dd>
166<dt><code>hs34</code></dt>
167<dd><p>Assemble for ARC HS34.
168</p>
169</dd>
170<dt><code>hs38</code></dt>
171<dd><p>Assemble for ARC HS38.
172</p>
173</dd>
174<dt><code>hs38_linux</code></dt>
175<dd><p>Assemble for ARC HS38 with floating point support on.
176</p>
177</dd>
178<dt><code>nps400</code></dt>
179<dd><a name="index-mnps400-command_002dline-option_002c-ARC"></a>
180<p>Assemble for ARC 700 with NPS-400 extended instructions.
181</p>
182</dd>
183</dl>
184
185<p>Note: the <code>.cpu</code> directive (see <a href="ARC-Directives.html#ARC-Directives">ARC Directives</a>) can
186to be used to select a core variant from within assembly code.
187</p>
188<a name="index-_002dEB-command_002dline-option_002c-ARC"></a>
189</dd>
190<dt><code>-EB</code></dt>
191<dd><p>This option specifies that the output generated by the assembler should
192be marked as being encoded for a big-endian processor.
193</p>
194<a name="index-_002dEL-command_002dline-option_002c-ARC"></a>
195</dd>
196<dt><code>-EL</code></dt>
197<dd><p>This option specifies that the output generated by the assembler should
198be marked as being encoded for a little-endian processor - this is the
199default.
200</p>
201<a name="index-_002dmcode_002ddensity-command_002dline-option_002c-ARC"></a>
202</dd>
203<dt><code>-mcode-density</code></dt>
204<dd><p>This option turns on Code Density instructions.  Only valid for ARC EM
205processors.
206</p>
207<a name="index-_002dmrelax-command_002dline-option_002c-ARC"></a>
208</dd>
209<dt><code>-mrelax</code></dt>
210<dd><p>Enable support for assembly-time relaxation.  The assembler will
211replace a longer version of an instruction with a shorter one,
212whenever it is possible.
213</p>
214<a name="index-_002dmnps400-command_002dline-option_002c-ARC"></a>
215</dd>
216<dt><code>-mnps400</code></dt>
217<dd><p>Enable support for NPS-400 extended instructions.
218</p>
219<a name="index-_002dmspfp-command_002dline-option_002c-ARC"></a>
220</dd>
221<dt><code>-mspfp</code></dt>
222<dd><p>Enable support for single-precision floating point instructions.
223</p>
224<a name="index-_002dmdpfp-command_002dline-option_002c-ARC"></a>
225</dd>
226<dt><code>-mdpfp</code></dt>
227<dd><p>Enable support for double-precision floating point instructions.
228</p>
229<a name="index-_002dmfpuda-command_002dline-option_002c-ARC"></a>
230</dd>
231<dt><code>-mfpuda</code></dt>
232<dd><p>Enable support for double-precision assist floating point instructions.
233Only valid for ARC EM processors.
234</p>
235</dd>
236</dl>
237
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241Next: <a href="ARC-Syntax.html#ARC-Syntax" accesskey="n" rel="next">ARC Syntax</a>, Up: <a href="ARC_002dDependent.html#ARC_002dDependent" accesskey="u" rel="up">ARC-Dependent</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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