2001-04-10 05:04:59 +04:00
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2001-04-10 06:20:02 +04:00
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<META NAME="copyright" CONTENT="Copyright 2001 by MandrakeSoft S.A.">
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2001-04-10 05:04:59 +04:00
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<META NAME="Author" CONTENT="Kevin Lawton">
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html;CHARSET=iso-8859-1">
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<TITLE>FPU emulation</TITLE>
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</head>
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<body text="#000000" bgcolor="#ececec" link="#3333cc" vlink="#666666">
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<center><h1>FPU emulation</h1></center>
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<hr>
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You can now compile bochs to work with the FPU (Floating Point Unit)
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emulation which is included as part of the Linux kernel.
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Linux (and some other software packages) use
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<a href="http://www.linuxsupportline.com/~billm/">
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wm-FPU-emu, written by Bill Metzenthen
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</a>. I modified the code to interface with bochs, with
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permission from Bill.
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<p>
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To compile bochs to use this FPU emulator, grab the wm-FPU-emu
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package from the bochs
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<A HREF="ftp://bochs.com/pub/">FTP site</A>,
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and extract it somewhere.
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This will create a directory called "math-emu".
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Supply the path to
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this directory to the configure command in bochs, by including
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the option "--enable-fpu=/path/math-emu", where path is wherever
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you extracted it.
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<p>
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Error reporting needs more work. Though, I have
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got the paranoia tests to run on Linux running inside of bochs
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linked with wm-FPU-emu. They ran the same as on a real
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Linux/Pentium machine.
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<p>
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-Kevin
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</body>
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</html>
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