Re: signal 8 (floating point exception) upon resume
John Baldwin <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile,gmane.os.freebsd.current |
|---|---|
| Message-ID | <[email protected]> |
On Tuesday, March 25, 2014 5:38:50 pm Adrian Chadd wrote: > On 25 March 2014 12:46, John Baldwin <[email protected]> wrote: > > On Sunday, March 23, 2014 4:41:24 pm Adrian Chadd wrote: > >> [snip] > >> > >> Hi, > >> > >> As part of this thread, a whole lot of stuff was thrown around to try > >> and fix / improve the correctness of this. > >> > >> But it still happens to me in -HEAD i386. I updated to r263418 and > >> it's now doing it around 30-50% of the time I resume. > > > > Yes, nothing has changed in HEAD. > > > >> So, since I really am trying to avoid getting neck deep in learning > >> (by myself) a new thing right now, would someone be willing to help me > >> through the process of (a) learning how this is all supposed to work > >> (which thanks to jhb and bde, I think I've learnt from the posts in > >> this thread) and (b) some things to try out? I'll be able to report > >> the results of this pretty quickly. > > > > You can try www.freebsd.org/~jhb/patches/i386_fpu_suspend2.patch. You > > could have tried the first patch I posted here earlier when I first > > posted it as well. :) > > There was a lot of chatter, I thought it was prudent to let it all > settle before jumping in. > > Anyway: You do understand C well enough to fix simple typos? I don't have any i386 machines around, but I'll work on cross-building. > --- npx.o --- > /usr/home/adrian/work/freebsd/head/src/sys/i386/isa/npx.c:769:18: > error: declaration of 'union safefpu' will not be visible outside of > this function [-Werror,-Wvisibility] > npxsuspend(union safefpu *addr) > ^ s/safe/save/ > /usr/home/adrian/work/freebsd/head/src/sys/i386/isa/npx.c:779:8: > error: implicit declaration of function 'rcr' is invalid in C99 > [-Werror,-Wimplicit-function-declaration] > cr0 = rcr(0); > ^ Probably just need #include <machine/cpufunc.h> -- John Baldwin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"