Date: Sun, 30 Apr 2000 15:46:27 +0100 From: "Marco van de Voort" <marcov@stack.nl> To: hackers@freebsd.org Subject: fp statusword in sigcontext Message-ID: <20000430134619.C29D82E806@hermes.tue.nl>
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I want a signalhandler, which splits out sigfpe to the different copro
signals. I found a linux example, which is based on the statusword field of the
sigcontext structure passed to the signalhandler set
Problem is that the linux sigcontext has a field for the floatingpoint statusword,
while the BSD sigcontext (machine/signal.h) has only two arrays of int's:
(FPU part struct sigcontext
* XXX FPU state is 27 * 4 bytes h/w, 1 * 4 bytes s/w (probably not
* needed here), or that + 16 * 4 bytes for emulators (probably all
* needed here). The "spare" bytes are mostly not spare.
*/
int sc_fpregs[28]; /* machine state (FPU): */
int sc_spare[17];
};
Does somebody know how to distille the FP statusword from this struct?
Marco van de Voort (MarcoV@Stack.nl)
<http://www.stack.nl/~marcov/xtdlib.htm>;
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