<html lang="en"> <head> <title>Assembler Format - GNU Compiler Collection (GCC) Internals</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="GNU Compiler Collection (GCC) Internals"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Target-Macros.html#Target-Macros" title="Target Macros"> <link rel="prev" href="PIC.html#PIC" title="PIC"> <link rel="next" href="Debugging-Info.html#Debugging-Info" title="Debugging Info"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- Copyright (C) 1988-2015 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 the Invariant Sections being ``Funding Free Software'', the Front-Cover Texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled ``GNU Free Documentation License''. (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development.--> <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="Assembler-Format"></a> <p> Next: <a rel="next" accesskey="n" href="Debugging-Info.html#Debugging-Info">Debugging Info</a>, Previous: <a rel="previous" accesskey="p" href="PIC.html#PIC">PIC</a>, Up: <a rel="up" accesskey="u" href="Target-Macros.html#Target-Macros">Target Macros</a> <hr> </div> <h3 class="section">17.20 Defining the Output Assembler Language</h3> <p>This section describes macros whose principal purpose is to describe how to write instructions in assembler language—rather than what the instructions do. <ul class="menu"> <li><a accesskey="1" href="File-Framework.html#File-Framework">File Framework</a>: Structural information for the assembler file. <li><a accesskey="2" href="Data-Output.html#Data-Output">Data Output</a>: Output of constants (numbers, strings, addresses). <li><a accesskey="3" href="Uninitialized-Data.html#Uninitialized-Data">Uninitialized Data</a>: Output of uninitialized variables. <li><a accesskey="4" href="Label-Output.html#Label-Output">Label Output</a>: Output and generation of labels. <li><a accesskey="5" href="Initialization.html#Initialization">Initialization</a>: General principles of initialization and termination routines. <li><a accesskey="6" href="Macros-for-Initialization.html#Macros-for-Initialization">Macros for Initialization</a> Specific macros that control the handling of initialization and termination routines. <li><a accesskey="7" href="Instruction-Output.html#Instruction-Output">Instruction Output</a>: Output of actual instructions. <li><a accesskey="8" href="Dispatch-Tables.html#Dispatch-Tables">Dispatch Tables</a>: Output of jump tables. <li><a accesskey="9" href="Exception-Region-Output.html#Exception-Region-Output">Exception Region Output</a>: Output of exception region code. <li><a href="Alignment-Output.html#Alignment-Output">Alignment Output</a>: Pseudo ops for alignment and skipping data. </ul> </body></html>