| <html lang="en"> |
| <head> |
| <title>D10V-Size - 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="D10V_002dSyntax.html#D10V_002dSyntax" title="D10V-Syntax"> |
| <link rel="next" href="D10V_002dSubs.html#D10V_002dSubs" title="D10V-Subs"> |
| <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="D10V-Size"></a> |
| <a name="D10V_002dSize"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="D10V_002dSubs.html#D10V_002dSubs">D10V-Subs</a>, |
| Up: <a rel="up" accesskey="u" href="D10V_002dSyntax.html#D10V_002dSyntax">D10V-Syntax</a> |
| <hr> |
| </div> |
| |
| <h5 class="subsubsection">9.11.2.1 Size Modifiers</h5> |
| |
| <p><a name="index-D10V-size-modifiers-983"></a><a name="index-size-modifiers_002c-D10V-984"></a>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><span class="samp">.s</span></samp>’ (short) or ‘<samp><span class="samp">.l</span></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><span class="samp">bra.s foo</span></samp>’. |
| Objdump and GDB will always append ‘<samp><span class="samp">.s</span></samp>’ or ‘<samp><span class="samp">.l</span></samp>’ to instructions which |
| have both short and long forms. |
| |
| </body></html> |
| |