<html lang="en"> <head> <title>MIPS insn - 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="MIPS_002dDependent.html#MIPS_002dDependent" title="MIPS-Dependent"> <link rel="prev" href="MIPS-autoextend.html#MIPS-autoextend" title="MIPS autoextend"> <link rel="next" href="MIPS-FP-ABIs.html#MIPS-FP-ABIs" title="MIPS FP ABIs"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991-2015 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 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="MIPS-insn"></a> <p> Next: <a rel="next" accesskey="n" href="MIPS-FP-ABIs.html#MIPS-FP-ABIs">MIPS FP ABIs</a>, Previous: <a rel="previous" accesskey="p" href="MIPS-autoextend.html#MIPS-autoextend">MIPS autoextend</a>, Up: <a rel="up" accesskey="u" href="MIPS_002dDependent.html#MIPS_002dDependent">MIPS-Dependent</a> <hr> </div> <h4 class="subsection">9.27.8 Directive to mark data as an instruction</h4> <p><a name="index-g_t_0040code_007b_002einsn_007d-1507"></a>The <code>.insn</code> directive tells <code>as</code> that the following data is actually instructions. This makes a difference in MIPS 16 and microMIPS modes: when loading the address of a label which precedes instructions, <code>as</code> automatically adds 1 to the value, so that jumping to the loaded address will do the right thing. <p><a name="index-g_t_0040code_007b_002eglobal_007d-1508"></a>The <code>.global</code> and <code>.globl</code> directives supported by <code>as</code> will by default mark the symbol as pointing to a region of data not code. This means that, for example, any instructions following such a symbol will not be disassembled by <code>objdump</code> as it will regard them as data. To change this behavior an optional section name can be placed after the symbol name in the <code>.global</code> directive. If this section exists and is known to be a code section, then the symbol will be marked as pointing at code not data. Ie the syntax for the directive is: <p><code>.global </code><var>symbol</var><code>[ </code><var>section</var><code>][, </code><var>symbol</var><code>[ </code><var>section</var><code>]] ...</code>, <p>Here is a short example: <pre class="example"> .global foo .text, bar, baz .data foo: nop bar: .word 0x0 baz: .word 0x1 </pre> </body></html>