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| <a name="Options-23"></a> |
| <h4 class="subsection">9.42.1 Options</h4> |
| |
| <a name="index-options-for-SPARC"></a> |
| <a name="index-SPARC-options"></a> |
| <a name="index-architectures_002c-SPARC"></a> |
| <a name="index-SPARC-architectures"></a> |
| <p>The SPARC chip family includes several successive versions, using the same |
| core instruction set, but including a few additional instructions at |
| each version. There are exceptions to this however. For details on what |
| instructions each variant supports, please see the chip’s architecture |
| reference manual. |
| </p> |
| <p>By default, <code>as</code> assumes the core instruction set (SPARC |
| v6), but “bumps” the architecture level as needed: it switches to |
| successively higher architectures as it encounters instructions that |
| only exist in the higher levels. |
| </p> |
| <p>If not configured for SPARC v9 (<code>sparc64-*-*</code>) GAS will not bump |
| past sparclite by default, an option must be passed to enable the |
| v9 instructions. |
| </p> |
| <p>GAS treats sparclite as being compatible with v8, unless an architecture |
| is explicitly requested. SPARC v9 is always incompatible with sparclite. |
| </p> |
| |
| <dl compact="compact"> |
| <dd><a name="index-_002dAv6"></a> |
| <a name="index-_002dAv7"></a> |
| <a name="index-_002dAv8"></a> |
| <a name="index-_002dAleon"></a> |
| <a name="index-_002dAsparclet"></a> |
| <a name="index-_002dAsparclite"></a> |
| <a name="index-_002dAv9"></a> |
| <a name="index-_002dAv9a"></a> |
| <a name="index-_002dAv9b"></a> |
| <a name="index-_002dAv9c"></a> |
| <a name="index-_002dAv9d"></a> |
| <a name="index-_002dAv9e"></a> |
| <a name="index-_002dAv9v"></a> |
| <a name="index-_002dAv9m"></a> |
| <a name="index-_002dAsparc"></a> |
| <a name="index-_002dAsparcvis"></a> |
| <a name="index-_002dAsparcvis2"></a> |
| <a name="index-_002dAsparcfmaf"></a> |
| <a name="index-_002dAsparcima"></a> |
| <a name="index-_002dAsparcvis3"></a> |
| <a name="index-_002dAsparcvis3r"></a> |
| </dd> |
| <dt><code>-Av6 | -Av7 | -Av8 | -Aleon | -Asparclet | -Asparclite</code></dt> |
| <dt><code>-Av8plus | -Av8plusa | -Av8plusb | -Av8plusc | -Av8plusd | -Av8plusv</code></dt> |
| <dt><code>-Av9 | -Av9a | -Av9b | -Av9c | -Av9d | -Av9e | -Av9v | -Av9m</code></dt> |
| <dt><code>-Asparc | -Asparcvis | -Asparcvis2 | -Asparcfmaf | -Asparcima</code></dt> |
| <dt><code>-Asparcvis3 | -Asparcvis3r</code></dt> |
| <dd><p>Use one of the ‘<samp>-A</samp>’ options to select one of the SPARC |
| architectures explicitly. If you select an architecture explicitly, |
| <code>as</code> reports a fatal error if it encounters an instruction |
| or feature requiring an incompatible or higher level. |
| </p> |
| <p>‘<samp>-Av8plus</samp>’, ‘<samp>-Av8plusa</samp>’, ‘<samp>-Av8plusb</samp>’, ‘<samp>-Av8plusc</samp>’, |
| ‘<samp>-Av8plusd</samp>’, and ‘<samp>-Av8plusv</samp>’ select a 32 bit environment. |
| </p> |
| <p>‘<samp>-Av9</samp>’, ‘<samp>-Av9a</samp>’, ‘<samp>-Av9b</samp>’, ‘<samp>-Av9c</samp>’, ‘<samp>-Av9d</samp>’, |
| ‘<samp>-Av9e</samp>’, ‘<samp>-Av9v</samp>’ and ‘<samp>-Av9m</samp>’ select a 64 bit |
| environment and are not available unless GAS is explicitly configured |
| with 64 bit environment support. |
| </p> |
| <p>‘<samp>-Av8plusa</samp>’ and ‘<samp>-Av9a</samp>’ enable the SPARC V9 instruction set with |
| UltraSPARC VIS 1.0 extensions. |
| </p> |
| <p>‘<samp>-Av8plusb</samp>’ and ‘<samp>-Av9b</samp>’ enable the UltraSPARC VIS 2.0 instructions, |
| as well as the instructions enabled by ‘<samp>-Av8plusa</samp>’ and ‘<samp>-Av9a</samp>’. |
| </p> |
| <p>‘<samp>-Av8plusc</samp>’ and ‘<samp>-Av9c</samp>’ enable the UltraSPARC Niagara instructions, |
| as well as the instructions enabled by ‘<samp>-Av8plusb</samp>’ and ‘<samp>-Av9b</samp>’. |
| </p> |
| <p>‘<samp>-Av8plusd</samp>’ and ‘<samp>-Av9d</samp>’ enable the floating point fused |
| multiply-add, VIS 3.0, and HPC extension instructions, as well as the |
| instructions enabled by ‘<samp>-Av8plusc</samp>’ and ‘<samp>-Av9c</samp>’. |
| </p> |
| <p>‘<samp>-Av8pluse</samp>’ and ‘<samp>-Av9e</samp>’ enable the cryptographic |
| instructions, as well as the instructions enabled by ‘<samp>-Av8plusd</samp>’ |
| and ‘<samp>-Av9d</samp>’. |
| </p> |
| <p>‘<samp>-Av8plusv</samp>’ and ‘<samp>-Av9v</samp>’ enable floating point unfused |
| multiply-add, and integer multiply-add, as well as the instructions |
| enabled by ‘<samp>-Av8pluse</samp>’ and ‘<samp>-Av9e</samp>’. |
| </p> |
| <p>‘<samp>-Av8plusm</samp>’ and ‘<samp>-Av9m</samp>’ enable the VIS 4.0, subtract extended, |
| xmpmul, xmontmul and xmontsqr instructions, as well as the instructions |
| enabled by ‘<samp>-Av8plusv</samp>’ and ‘<samp>-Av9v</samp>’. |
| </p> |
| <p>‘<samp>-Asparc</samp>’ specifies a v9 environment. It is equivalent to |
| ‘<samp>-Av9</samp>’ if the word size is 64-bit, and ‘<samp>-Av8plus</samp>’ otherwise. |
| </p> |
| <p>‘<samp>-Asparcvis</samp>’ specifies a v9a environment. It is equivalent to |
| ‘<samp>-Av9a</samp>’ if the word size is 64-bit, and ‘<samp>-Av8plusa</samp>’ otherwise. |
| </p> |
| <p>‘<samp>-Asparcvis2</samp>’ specifies a v9b environment. It is equivalent to |
| ‘<samp>-Av9b</samp>’ if the word size is 64-bit, and ‘<samp>-Av8plusb</samp>’ otherwise. |
| </p> |
| <p>‘<samp>-Asparcfmaf</samp>’ specifies a v9b environment with the floating point |
| fused multiply-add instructions enabled. |
| </p> |
| <p>‘<samp>-Asparcima</samp>’ specifies a v9b environment with the integer |
| multiply-add instructions enabled. |
| </p> |
| <p>‘<samp>-Asparcvis3</samp>’ specifies a v9b environment with the VIS 3.0, |
| HPC , and floating point fused multiply-add instructions enabled. |
| </p> |
| <p>‘<samp>-Asparcvis3r</samp>’ specifies a v9b environment with the VIS 3.0, HPC, |
| and floating point unfused multiply-add instructions enabled. |
| </p> |
| <p>‘<samp>-Asparc5</samp>’ is equivalent to ‘<samp>-Av9m</samp>’. |
| </p> |
| </dd> |
| <dt><code>-xarch=v8plus | -xarch=v8plusa | -xarch=v8plusb | -xarch=v8plusc</code></dt> |
| <dt><code>-xarch=v8plusd | -xarch=v8plusv | -xarch=v9 | -xarch=v9a</code></dt> |
| <dt><code>-xarch=v9b | -xarch=v9c | -xarch=v9d | -xarch=v9e | -xarch=v9v | -xarch=v9m</code></dt> |
| <dt><code>-xarch=sparc | -xarch=sparcvis | -xarch=sparcvis2</code></dt> |
| <dt><code>-xarch=sparcfmaf | -xarch=sparcima | -xarch=sparcvis3</code></dt> |
| <dt><code>-xarch=sparcvis3r | -xarch=sparc5</code></dt> |
| <dd><p>For compatibility with the SunOS v9 assembler. These options are |
| equivalent to -Av8plus, -Av8plusa, -Av8plusb, -Av8plusc, -Av8plusd, |
| -Av8plusv, -Av9, -Av9a, -Av9b, -Av9c, -Av9d, -Av9e, -Av9v, -Av9m, |
| -Asparc, -Asparcvis, -Asparcvis2, -Asparcfmaf, -Asparcima, |
| -Asparcvis3, and -Asparcvis3r, respectively. |
| </p> |
| </dd> |
| <dt><code>-bump</code></dt> |
| <dd><p>Warn whenever it is necessary to switch to another level. |
| If an architecture level is explicitly requested, GAS will not issue |
| warnings until that level is reached, and will then bump the level |
| as required (except between incompatible levels). |
| </p> |
| </dd> |
| <dt><code>-32 | -64</code></dt> |
| <dd><p>Select the word size, either 32 bits or 64 bits. |
| These options are only available with the ELF object file format, |
| and require that the necessary BFD support has been included. |
| </p></dd> |
| </dl> |
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