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| <h4 class="subsection">3.17.25 MicroBlaze Options</h4> |
| |
| <p><a name="index-MicroBlaze-Options-1708"></a> |
| <dl> |
| <dt><code>-msoft-float</code><dd><a name="index-msoft_002dfloat-1709"></a>Use software emulation for floating point (default). |
| |
| <br><dt><code>-mhard-float</code><dd><a name="index-mhard_002dfloat-1710"></a>Use hardware floating-point instructions. |
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| <br><dt><code>-mmemcpy</code><dd><a name="index-mmemcpy-1711"></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-1712"></a>This option is deprecated. Use <samp><span class="option">-fno-zero-initialized-in-bss</span></samp> instead. |
| |
| <br><dt><code>-mcpu=</code><var>cpu-type</var><dd><a name="index-mcpu_003d-1713"></a>Use features of, and schedule code for, the given CPU. |
| 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>’, |
| where <var>X</var> is a major version, <var>YY</var> is the minor version, and |
| <var>Z</var> is compatibility code. Example values are ‘<samp><span class="samp">v3.00.a</span></samp>’, |
| ‘<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>’. |
| |
| <br><dt><code>-mxl-soft-mul</code><dd><a name="index-mxl_002dsoft_002dmul-1714"></a>Use software multiply emulation (default). |
| |
| <br><dt><code>-mxl-soft-div</code><dd><a name="index-mxl_002dsoft_002ddiv-1715"></a>Use software emulation for divides (default). |
| |
| <br><dt><code>-mxl-barrel-shift</code><dd><a name="index-mxl_002dbarrel_002dshift-1716"></a>Use the hardware barrel shifter. |
| |
| <br><dt><code>-mxl-pattern-compare</code><dd><a name="index-mxl_002dpattern_002dcompare-1717"></a>Use pattern compare instructions. |
| |
| <br><dt><code>-msmall-divides</code><dd><a name="index-msmall_002ddivides-1718"></a>Use table lookup optimization for small signed integer divisions. |
| |
| <br><dt><code>-mxl-stack-check</code><dd><a name="index-mxl_002dstack_002dcheck-1719"></a>This option is deprecated. Use <samp><span class="option">-fstack-check</span></samp> instead. |
| |
| <br><dt><code>-mxl-gp-opt</code><dd><a name="index-mxl_002dgp_002dopt-1720"></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-1721"></a>Use multiply high instructions for high part of 32x32 multiply. |
| |
| <br><dt><code>-mxl-float-convert</code><dd><a name="index-mxl_002dfloat_002dconvert-1722"></a>Use hardware floating-point conversion instructions. |
| |
| <br><dt><code>-mxl-float-sqrt</code><dd><a name="index-mxl_002dfloat_002dsqrt-1723"></a>Use hardware floating-point square root instruction. |
| |
| <br><dt><code>-mbig-endian</code><dd><a name="index-mbig_002dendian-1724"></a>Generate code for a big-endian target. |
| |
| <br><dt><code>-mlittle-endian</code><dd><a name="index-mlittle_002dendian-1725"></a>Generate code for a little-endian target. |
| |
| <br><dt><code>-mxl-reorder</code><dd><a name="index-mxl_002dreorder-1726"></a>Use reorder instructions (swap and byte reversed load/store). |
| |
| <br><dt><code>-mxl-mode-</code><var>app-model</var><dd>Select application model <var>app-model</var>. Valid models are |
| <dl> |
| <dt>‘<samp><span class="samp">executable</span></samp>’<dd>normal executable (default), uses startup code <samp><span class="file">crt0.o</span></samp>. |
| |
| <br><dt>‘<samp><span class="samp">xmdstub</span></samp>’<dd>for use with Xilinx Microprocessor Debugger (XMD) based |
| software intrusive debug agent called xmdstub. This uses startup file |
| <samp><span class="file">crt1.o</span></samp> and sets the start address of the program to 0x800. |
| |
| <br><dt>‘<samp><span class="samp">bootstrap</span></samp>’<dd>for applications that are loaded using a bootloader. |
| This model uses startup file <samp><span class="file">crt2.o</span></samp> which does not contain a processor |
| reset vector handler. This is suitable for transferring control on a |
| processor reset to the bootloader rather than the application. |
| |
| <br><dt>‘<samp><span class="samp">novectors</span></samp>’<dd>for applications that do not require any of the |
| MicroBlaze vectors. This option may be useful for applications running |
| within a monitoring application. This model uses <samp><span class="file">crt3.o</span></samp> as a startup file. |
| </dl> |
| |
| <p>Option <samp><span class="option">-xl-mode-</span><var>app-model</var></samp> is a deprecated alias for |
| <samp><span class="option">-mxl-mode-</span><var>app-model</var></samp>. |
| |
| </dl> |
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