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| <title>Using as: D10V-Size</title> |
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| Next: <a href="D10V_002dSubs.html#D10V_002dSubs" accesskey="n" rel="next">D10V-Subs</a>, Up: <a href="D10V_002dSyntax.html#D10V_002dSyntax" accesskey="u" rel="up">D10V-Syntax</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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| <a name="Size-Modifiers"></a> |
| <h4 class="subsubsection">9.9.2.1 Size Modifiers</h4> |
| <a name="index-D10V-size-modifiers"></a> |
| <a name="index-size-modifiers_002c-D10V"></a> |
| <p>The D10V version of <code>as</code> uses the instruction names in the D10V |
| Architecture Manual. However, the names in the manual are sometimes ambiguous. |
| There are instruction names that can assemble to a short or long form opcode. |
| How does the assembler pick the correct form? <code>as</code> will always pick the |
| smallest form if it can. When dealing with a symbol that is not defined yet when a |
| line is being assembled, it will always use the long form. If you need to force the |
| assembler to use either the short or long form of the instruction, you can append |
| either ‘<samp>.s</samp>’ (short) or ‘<samp>.l</samp>’ (long) to it. For example, if you are writing |
| an assembly program and you want to do a branch to a symbol that is defined later |
| in your program, you can write ‘<samp>bra.s foo</samp>’. |
| Objdump and GDB will always append ‘<samp>.s</samp>’ or ‘<samp>.l</samp>’ to instructions which |
| have both short and long forms. |
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