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124 lines
7.2 KiB
HTML
124 lines
7.2 KiB
HTML
4 years ago
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<html lang="en">
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<head>
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<title>MicroBlaze Options - Using the GNU Compiler Collection (GCC)</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC)">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Submodel-Options.html#Submodel-Options" title="Submodel Options">
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<link rel="prev" href="MeP-Options.html#MeP-Options" title="MeP Options">
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<link rel="next" href="MIPS-Options.html#MIPS-Options" title="MIPS Options">
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Copyright (C) 1988-2015 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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(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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</head>
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<body>
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<div class="node">
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<a name="MicroBlaze-Options"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="MIPS-Options.html#MIPS-Options">MIPS Options</a>,
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Previous: <a rel="previous" accesskey="p" href="MeP-Options.html#MeP-Options">MeP Options</a>,
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Up: <a rel="up" accesskey="u" href="Submodel-Options.html#Submodel-Options">Submodel Options</a>
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<hr>
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</div>
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<h4 class="subsection">3.17.24 MicroBlaze Options</h4>
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<p><a name="index-MicroBlaze-Options-1910"></a>
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<dl>
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<dt><code>-msoft-float</code><dd><a name="index-msoft_002dfloat-1911"></a>Use software emulation for floating point (default).
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<br><dt><code>-mhard-float</code><dd><a name="index-mhard_002dfloat-1912"></a>Use hardware floating-point instructions.
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<br><dt><code>-mmemcpy</code><dd><a name="index-mmemcpy-1913"></a>Do not optimize block moves, use <code>memcpy</code>.
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<br><dt><code>-mno-clearbss</code><dd><a name="index-mno_002dclearbss-1914"></a>This option is deprecated. Use <samp><span class="option">-fno-zero-initialized-in-bss</span></samp> instead.
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<br><dt><code>-mcpu=</code><var>cpu-type</var><dd><a name="index-mcpu_003d-1915"></a>Use features of, and schedule code for, the given CPU.
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Supported values are in the format ‘<samp><span class="samp">v</span><var>X</var><span class="samp">.</span><var>YY</var><span class="samp">.</span><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><span class="samp">v3.00.a</span></samp>’,
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‘<samp><span class="samp">v4.00.b</span></samp>’, ‘<samp><span class="samp">v5.00.a</span></samp>’, ‘<samp><span class="samp">v5.00.b</span></samp>’, ‘<samp><span class="samp">v5.00.b</span></samp>’, ‘<samp><span class="samp">v6.00.a</span></samp>’.
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<br><dt><code>-mxl-soft-mul</code><dd><a name="index-mxl_002dsoft_002dmul-1916"></a>Use software multiply emulation (default).
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<br><dt><code>-mxl-soft-div</code><dd><a name="index-mxl_002dsoft_002ddiv-1917"></a>Use software emulation for divides (default).
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<br><dt><code>-mxl-barrel-shift</code><dd><a name="index-mxl_002dbarrel_002dshift-1918"></a>Use the hardware barrel shifter.
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<br><dt><code>-mxl-pattern-compare</code><dd><a name="index-mxl_002dpattern_002dcompare-1919"></a>Use pattern compare instructions.
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<br><dt><code>-msmall-divides</code><dd><a name="index-msmall_002ddivides-1920"></a>Use table lookup optimization for small signed integer divisions.
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<br><dt><code>-mxl-stack-check</code><dd><a name="index-mxl_002dstack_002dcheck-1921"></a>This option is deprecated. Use <samp><span class="option">-fstack-check</span></samp> instead.
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<br><dt><code>-mxl-gp-opt</code><dd><a name="index-mxl_002dgp_002dopt-1922"></a>Use GP-relative <code>.sdata</code>/<code>.sbss</code> sections.
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<br><dt><code>-mxl-multiply-high</code><dd><a name="index-mxl_002dmultiply_002dhigh-1923"></a>Use multiply high instructions for high part of 32x32 multiply.
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<br><dt><code>-mxl-float-convert</code><dd><a name="index-mxl_002dfloat_002dconvert-1924"></a>Use hardware floating-point conversion instructions.
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<br><dt><code>-mxl-float-sqrt</code><dd><a name="index-mxl_002dfloat_002dsqrt-1925"></a>Use hardware floating-point square root instruction.
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<br><dt><code>-mbig-endian</code><dd><a name="index-mbig_002dendian-1926"></a>Generate code for a big-endian target.
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<br><dt><code>-mlittle-endian</code><dd><a name="index-mlittle_002dendian-1927"></a>Generate code for a little-endian target.
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<br><dt><code>-mxl-reorder</code><dd><a name="index-mxl_002dreorder-1928"></a>Use reorder instructions (swap and byte reversed load/store).
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<br><dt><code>-mxl-mode-</code><var>app-model</var><dd>Select application model <var>app-model</var>. Valid models are
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<dl>
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<dt>‘<samp><span class="samp">executable</span></samp>’<dd>normal executable (default), uses startup code <samp><span class="file">crt0.o</span></samp>.
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<br><dt>‘<samp><span class="samp">xmdstub</span></samp>’<dd>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><span class="file">crt1.o</span></samp> and sets the start address of the program to 0x800.
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<br><dt>‘<samp><span class="samp">bootstrap</span></samp>’<dd>for applications that are loaded using a bootloader.
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This model uses startup file <samp><span class="file">crt2.o</span></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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<br><dt>‘<samp><span class="samp">novectors</span></samp>’<dd>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><span class="file">crt3.o</span></samp> as a startup file.
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</dl>
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<p>Option <samp><span class="option">-xl-mode-</span><var>app-model</var></samp> is a deprecated alias for
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<samp><span class="option">-mxl-mode-</span><var>app-model</var></samp>.
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</dl>
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</body></html>
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