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| Next: <a href="MIPS-NaN-Encodings.html#MIPS-NaN-Encodings" accesskey="n" rel="next">MIPS NaN Encodings</a>, Previous: <a href="MIPS-autoextend.html#MIPS-autoextend" accesskey="p" rel="prev">MIPS autoextend</a>, Up: <a href="MIPS_002dDependent.html#MIPS_002dDependent" accesskey="u" rel="up">MIPS-Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="Directive-to-mark-data-as-an-instruction"></a> |
| <h4 class="subsection">9.27.8 Directive to mark data as an instruction</h4> |
| |
| <a name="index-_002einsn"></a> |
| <p>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-_002eglobal"></a> |
| <p>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 |
| behaviour 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 poiting at |
| code not data. Ie the syntax for the directive is: |
| </p> |
| <p><code>.global <var>symbol</var>[ <var>section</var>][, <var>symbol</var>[ <var>section</var>]] ...</code>, |
| </p> |
| <p>Here is a short example: |
| </p> |
| <div class="example"> |
| <pre class="example"> .global foo .text, bar, baz .data |
| foo: |
| nop |
| bar: |
| .word 0x0 |
| baz: |
| .word 0x1 |
| |
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