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Re: Grrr: SIGEMT

To: linux-mips@fnet.fr
Subject: Re: Grrr: SIGEMT
From: Andreas Busse <andy@waldorf-gmbh.de>
Date: Sat, 2 Sep 1995 11:12:23 +0200
In-reply-to: <199509020855.KAA19185@newton.waldorf-gmbh.de>
 >  > 
 >  > > SIGEMT me thinks is a BSD thing, I have to provide it for SunOS
 >  > > compatibility if that means anything...  And whats even more strange
 >  > > is that the NetBSD Sparc code sends this signal to a process if it
 >  > > gets a tagged addition overflow trap ??!?!?!  Possibly Ultrix or IRIX
 >  > > or some other MIPS based Unix has this?  As another point of reference
 >  > > my Sparc gdb stub happens to use SIGEMT for fp disabled traps so it
 >  > > seems as if SIGEMT is another one of the MAGIC Unix things ;)
 >  > 

Actually, that seems perfectly OK. SIGEMT is "emulation trap", that is,
something needs to be emulated. In this case, the FPU :-)
Interestingly Linux doesn't have SIGEMT, although there is a FPU emulator 
in the 386 kernel. Never took a look at it, so I don't know how that works. 

Cheers,
Andy

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