Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request From: attcan!utzoo!henry@uunet.uu.net Newsgroups: comp.sys.sun Subject: Re: undump and the fpa Message-ID: <8811250522.AA24556@uunet.UU.NET> Date: 9 Dec 88 21:21:33 GMT Sender: usenet@rice.edu Organization: Rice University, Houston, Texas Lines: 15 Approved: Sun-Spots@rice.edu Original-Date: Fri, 25 Nov 88 00:22:29 EST X-Sun-Spots-Digest: Volume 7, Issue 40, message 4 of 8 >I am trying to use undump on a program that uses the fpa. Undump works >fine on the version of this program that uses the 68881, but seems to hang >the first time the fpa is used. I'm actually not surprised at this, since >the fpa is a device...and is probably accessed by doing some open-file >like operation. No, the FPA looks like a bunch of really strange memory locations off in a funny corner of the address space, plus occasional signals. Two things come to mind: (1) saving FPA state (don't know if SunOS does this, and doubly don't know if undump is smart enough to set things up to restore it); (2) setting up the FPA signal handler, which is an absolute necessity (see the Floating Point Programmer's Guide). Henry Spencer at U of Toronto Zoology uunet!attcan!utzoo!henry henry@zoo.toronto.edu