| <html lang="en"> |
| <head> |
| <title>HPPA 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="HPPA_002dDependent.html#HPPA_002dDependent" title="HPPA-Dependent"> |
| <link rel="prev" href="HPPA-Options.html#HPPA-Options" title="HPPA Options"> |
| <link rel="next" href="HPPA-Floating-Point.html#HPPA-Floating-Point" title="HPPA Floating Point"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| This file documents the GNU Assembler "as". |
| |
| Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 2000, 2001, 2002, 2006, 2007, 2008, 2009, 2010 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> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="HPPA-Syntax"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="HPPA-Floating-Point.html#HPPA-Floating-Point">HPPA Floating Point</a>, |
| Previous: <a rel="previous" accesskey="p" href="HPPA-Options.html#HPPA-Options">HPPA Options</a>, |
| Up: <a rel="up" accesskey="u" href="HPPA_002dDependent.html#HPPA_002dDependent">HPPA-Dependent</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">9.11.3 Syntax</h4> |
| |
| <p>The assembler syntax closely follows the HPPA instruction set |
| reference manual; assembler directives and general syntax closely follow the |
| HPPA assembly language reference manual, with a few noteworthy differences. |
| |
| <p>First, a colon may immediately follow a label definition. This is |
| simply for compatibility with how most assembly language programmers |
| write code. |
| |
| <p>Some obscure expression parsing problems may affect hand written code which |
| uses the <code>spop</code> instructions, or code which makes significant |
| use of the <code>!</code> line separator. |
| |
| <p><code>as</code> is much less forgiving about missing arguments and other |
| similar oversights than the HP assembler. <code>as</code> notifies you |
| of missing arguments as syntax errors; this is regarded as a feature, not a |
| bug. |
| |
| <p>Finally, <code>as</code> allows you to use an external symbol without |
| explicitly importing the symbol. <em>Warning:</em> in the future this will be |
| an error for HPPA targets. |
| |
| <p>Special characters for HPPA targets include: |
| |
| <p>‘<samp><span class="samp">;</span></samp>’ is the line comment character. |
| |
| <p>‘<samp><span class="samp">!</span></samp>’ can be used instead of a newline to separate statements. |
| |
| <p>Since ‘<samp><span class="samp">$</span></samp>’ has no special meaning, you may use it in symbol names. |
| |
| </body></html> |
| |