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A copy of the license is included in the section entitled "GNU Free Documentation License". --> <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>D10V-Chars (Using as)</title> <meta name="description" content="D10V-Chars (Using as)"> <meta name="keywords" content="D10V-Chars (Using as)"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html#Top" rel="start" title="Top"> <link href="AS-Index.html#AS-Index" rel="index" title="AS Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="D10V_002dSyntax.html#D10V_002dSyntax" rel="up" title="D10V-Syntax"> <link href="D10V_002dRegs.html#D10V_002dRegs" rel="next" title="D10V-Regs"> <link href="D10V_002dSubs.html#D10V_002dSubs" rel="prev" title="D10V-Subs"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <a name="D10V_002dChars"></a> <div class="header"> <p> Next: <a href="D10V_002dRegs.html#D10V_002dRegs" accesskey="n" rel="next">D10V-Regs</a>, Previous: <a href="D10V_002dSubs.html#D10V_002dSubs" accesskey="p" rel="prev">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> </div> <hr> <a name="Special-Characters-8"></a> <h4 class="subsubsection">9.11.2.3 Special Characters</h4> <a name="index-line-comment-character_002c-D10V"></a> <a name="index-D10V-line-comment-character"></a> <p>A semicolon (‘<samp>;</samp>’) can be used anywhere on a line to start a comment that extends to the end of the line. </p> <p>If a ‘<samp>#</samp>’ appears as the first character of a line, the whole line is treated as a comment, but in this case the line could also be a logical line number directive (see <a href="Comments.html#Comments">Comments</a>) or a preprocessor control command (see <a href="Preprocessing.html#Preprocessing">Preprocessing</a>). </p> <a name="index-sub_002dinstruction-ordering_002c-D10V"></a> <a name="index-D10V-sub_002dinstruction-ordering"></a> <p>Sub-instructions may be executed in order, in reverse-order, or in parallel. Instructions listed in the standard one-per-line format will be executed sequentially. To specify the executing order, use the following symbols: </p><dl compact="compact"> <dt>‘<samp>-></samp>’</dt> <dd><p>Sequential with instruction on the left first. </p></dd> <dt>‘<samp><-</samp>’</dt> <dd><p>Sequential with instruction on the right first. </p></dd> <dt>‘<samp>||</samp>’</dt> <dd><p>Parallel </p></dd> </dl> <p>The D10V syntax allows either one instruction per line, one instruction per line with the execution symbol, or two instructions per line. For example </p><dl compact="compact"> <dt><code>abs a1 -> abs r0</code></dt> <dd><p>Execute these sequentially. The instruction on the right is in the right container and is executed second. </p></dd> <dt><code>abs r0 <- abs a1</code></dt> <dd><p>Execute these reverse-sequentially. The instruction on the right is in the right container, and is executed first. </p></dd> <dt><code>ld2w r2,@r8+ || mac a0,r0,r7</code></dt> <dd><p>Execute these in parallel. </p></dd> <dt><code>ld2w r2,@r8+ ||</code></dt> <dt><code>mac a0,r0,r7</code></dt> <dd><p>Two-line format. Execute these in parallel. </p></dd> <dt><code>ld2w r2,@r8+</code></dt> <dt><code>mac a0,r0,r7</code></dt> <dd><p>Two-line format. Execute these sequentially. Assembler will put them in the proper containers. </p></dd> <dt><code>ld2w r2,@r8+ -></code></dt> <dt><code>mac a0,r0,r7</code></dt> <dd><p>Two-line format. Execute these sequentially. Same as above but second instruction will always go into right container. </p></dd> </dl> <a name="index-symbol-names_002c-_0024-in"></a> <a name="index-_0024-in-symbol-names"></a> <p>Since ‘<samp>$</samp>’ has no special meaning, you may use it in symbol names. </p> <hr> <div class="header"> <p> Next: <a href="D10V_002dRegs.html#D10V_002dRegs" accesskey="n" rel="next">D10V-Regs</a>, Previous: <a href="D10V_002dSubs.html#D10V_002dSubs" accesskey="p" rel="prev">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> </div> </body> </html>