219 lines
8.4 KiB
HTML
219 lines
8.4 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2016 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using the GNU Compiler Collection (GCC): MicroBlaze Options</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): MicroBlaze Options">
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<meta name="keywords" content="Using the GNU Compiler Collection (GCC): MicroBlaze Options">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options">
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<link href="MIPS-Options.html#MIPS-Options" rel="next" title="MIPS Options">
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<link href="MeP-Options.html#MeP-Options" rel="prev" title="MeP Options">
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<style type="text/css">
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-->
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="MicroBlaze-Options"></a>
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<div class="header">
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<p>
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Next: <a href="MIPS-Options.html#MIPS-Options" accesskey="n" rel="next">MIPS Options</a>, Previous: <a href="MeP-Options.html#MeP-Options" accesskey="p" rel="prev">MeP Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="MicroBlaze-Options-1"></a>
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<h4 class="subsection">3.18.25 MicroBlaze Options</h4>
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<a name="index-MicroBlaze-Options"></a>
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<dl compact="compact">
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<dt><code>-msoft-float</code></dt>
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<dd><a name="index-msoft_002dfloat-5"></a>
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<p>Use software emulation for floating point (default).
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</p>
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</dd>
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<dt><code>-mhard-float</code></dt>
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<dd><a name="index-mhard_002dfloat-2"></a>
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<p>Use hardware floating-point instructions.
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</p>
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</dd>
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<dt><code>-mmemcpy</code></dt>
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<dd><a name="index-mmemcpy"></a>
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<p>Do not optimize block moves, use <code>memcpy</code>.
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</p>
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</dd>
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<dt><code>-mno-clearbss</code></dt>
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<dd><a name="index-mno_002dclearbss"></a>
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<p>This option is deprecated. Use <samp>-fno-zero-initialized-in-bss</samp> instead.
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</p>
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</dd>
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<dt><code>-mcpu=<var>cpu-type</var></code></dt>
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<dd><a name="index-mcpu_003d-2"></a>
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<p>Use features of, and schedule code for, the given CPU.
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Supported values are in the format ‘<samp>v<var>X</var>.<var>YY</var>.<var>Z</var></samp>’,
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where <var>X</var> is a major version, <var>YY</var> is the minor version, and
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<var>Z</var> is compatibility code. Example values are ‘<samp>v3.00.a</samp>’,
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‘<samp>v4.00.b</samp>’, ‘<samp>v5.00.a</samp>’, ‘<samp>v5.00.b</samp>’, ‘<samp>v5.00.b</samp>’, ‘<samp>v6.00.a</samp>’.
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</p>
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</dd>
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<dt><code>-mxl-soft-mul</code></dt>
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<dd><a name="index-mxl_002dsoft_002dmul"></a>
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<p>Use software multiply emulation (default).
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</p>
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</dd>
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<dt><code>-mxl-soft-div</code></dt>
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<dd><a name="index-mxl_002dsoft_002ddiv"></a>
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<p>Use software emulation for divides (default).
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</p>
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</dd>
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<dt><code>-mxl-barrel-shift</code></dt>
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<dd><a name="index-mxl_002dbarrel_002dshift"></a>
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<p>Use the hardware barrel shifter.
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</p>
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</dd>
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<dt><code>-mxl-pattern-compare</code></dt>
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<dd><a name="index-mxl_002dpattern_002dcompare"></a>
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<p>Use pattern compare instructions.
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</p>
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</dd>
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<dt><code>-msmall-divides</code></dt>
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<dd><a name="index-msmall_002ddivides"></a>
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<p>Use table lookup optimization for small signed integer divisions.
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</p>
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</dd>
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<dt><code>-mxl-stack-check</code></dt>
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<dd><a name="index-mxl_002dstack_002dcheck"></a>
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<p>This option is deprecated. Use <samp>-fstack-check</samp> instead.
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</p>
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</dd>
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<dt><code>-mxl-gp-opt</code></dt>
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<dd><a name="index-mxl_002dgp_002dopt"></a>
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<p>Use GP-relative <code>.sdata</code>/<code>.sbss</code> sections.
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</p>
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</dd>
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<dt><code>-mxl-multiply-high</code></dt>
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<dd><a name="index-mxl_002dmultiply_002dhigh"></a>
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<p>Use multiply high instructions for high part of 32x32 multiply.
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</p>
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</dd>
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<dt><code>-mxl-float-convert</code></dt>
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<dd><a name="index-mxl_002dfloat_002dconvert"></a>
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<p>Use hardware floating-point conversion instructions.
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</p>
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</dd>
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<dt><code>-mxl-float-sqrt</code></dt>
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<dd><a name="index-mxl_002dfloat_002dsqrt"></a>
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<p>Use hardware floating-point square root instruction.
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</p>
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</dd>
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<dt><code>-mbig-endian</code></dt>
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<dd><a name="index-mbig_002dendian-6"></a>
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<p>Generate code for a big-endian target.
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</p>
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</dd>
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<dt><code>-mlittle-endian</code></dt>
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<dd><a name="index-mlittle_002dendian-6"></a>
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<p>Generate code for a little-endian target.
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</p>
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</dd>
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<dt><code>-mxl-reorder</code></dt>
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<dd><a name="index-mxl_002dreorder"></a>
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<p>Use reorder instructions (swap and byte reversed load/store).
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</p>
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</dd>
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<dt><code>-mxl-mode-<var>app-model</var></code></dt>
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<dd><p>Select application model <var>app-model</var>. Valid models are
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</p><dl compact="compact">
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<dt>‘<samp>executable</samp>’</dt>
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<dd><p>normal executable (default), uses startup code <samp>crt0.o</samp>.
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</p>
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</dd>
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<dt>‘<samp>xmdstub</samp>’</dt>
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<dd><p>for use with Xilinx Microprocessor Debugger (XMD) based
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software intrusive debug agent called xmdstub. This uses startup file
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<samp>crt1.o</samp> and sets the start address of the program to 0x800.
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</p>
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</dd>
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<dt>‘<samp>bootstrap</samp>’</dt>
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<dd><p>for applications that are loaded using a bootloader.
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This model uses startup file <samp>crt2.o</samp> which does not contain a processor
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reset vector handler. This is suitable for transferring control on a
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processor reset to the bootloader rather than the application.
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</p>
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</dd>
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<dt>‘<samp>novectors</samp>’</dt>
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<dd><p>for applications that do not require any of the
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MicroBlaze vectors. This option may be useful for applications running
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within a monitoring application. This model uses <samp>crt3.o</samp> as a startup file.
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</p></dd>
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</dl>
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<p>Option <samp>-xl-mode-<var>app-model</var></samp> is a deprecated alias for
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<samp>-mxl-mode-<var>app-model</var></samp>.
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="MIPS-Options.html#MIPS-Options" accesskey="n" rel="next">MIPS Options</a>, Previous: <a href="MeP-Options.html#MeP-Options" accesskey="p" rel="prev">MeP Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</html>
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