| <html lang="en"> |
| <head> |
| <title>MMIX-Syntax - Using as</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Using as"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="MMIX_002dDependent.html#MMIX_002dDependent" title="MMIX-Dependent"> |
| <link rel="prev" href="MMIX_002dExpand.html#MMIX_002dExpand" title="MMIX-Expand"> |
| <link rel="next" href="MMIX_002dmmixal.html#MMIX_002dmmixal" title="MMIX-mmixal"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| This file documents the GNU Assembler "as". |
| |
| Copyright (C) 1991-2019 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 |
| or any later version published by the Free Software Foundation; |
| with no Invariant Sections, with no Front-Cover Texts, and with no |
| Back-Cover Texts. A copy of the license is included in the |
| section entitled ``GNU Free Documentation License''. |
| |
| --> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="MMIX-Syntax"></a> |
| <a name="MMIX_002dSyntax"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="MMIX_002dmmixal.html#MMIX_002dmmixal">MMIX-mmixal</a>, |
| Previous: <a rel="previous" accesskey="p" href="MMIX_002dExpand.html#MMIX_002dExpand">MMIX-Expand</a>, |
| Up: <a rel="up" accesskey="u" href="MMIX_002dDependent.html#MMIX_002dDependent">MMIX-Dependent</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">9.28.3 Syntax</h4> |
| |
| <p>The assembly syntax is supposed to be upward compatible with that |
| described in Sections 1.3 and 1.4 of ‘<samp><span class="samp">The Art of Computer |
| Programming, Volume 1</span></samp>’. Draft versions of those chapters as well as other |
| MMIX information is located at |
| <a name="mmixsite"></a><a href="http://www-cs-faculty.stanford.edu/~knuth/mmix-news.html">http://www-cs-faculty.stanford.edu/~knuth/mmix-news.html</a>. |
| Most code examples from the mmixal package located there should work |
| unmodified when assembled and linked as single files, with a few |
| noteworthy exceptions (see <a href="MMIX_002dmmixal.html#MMIX_002dmmixal">MMIX-mmixal</a>). |
| |
| <p>Before an instruction is emitted, the current location is aligned to the |
| next four-byte boundary. If a label is defined at the beginning of the |
| line, its value will be the aligned value. |
| |
| <p>In addition to the traditional hex-prefix ‘<samp><span class="samp">0x</span></samp>’, a hexadecimal number |
| can also be specified by the prefix character ‘<samp><span class="samp">#</span></samp>’. |
| |
| <p>After all operands to an MMIX instruction or directive have been |
| specified, the rest of the line is ignored, treated as a comment. |
| |
| <ul class="menu"> |
| <li><a accesskey="1" href="MMIX_002dChars.html#MMIX_002dChars">MMIX-Chars</a>: Special Characters |
| <li><a accesskey="2" href="MMIX_002dSymbols.html#MMIX_002dSymbols">MMIX-Symbols</a>: Symbols |
| <li><a accesskey="3" href="MMIX_002dRegs.html#MMIX_002dRegs">MMIX-Regs</a>: Register Names |
| <li><a accesskey="4" href="MMIX_002dPseudos.html#MMIX_002dPseudos">MMIX-Pseudos</a>: Assembler Directives |
| </ul> |
| |
| </body></html> |
| |
