The Sun Studio's equivalent of GCC's
-ffreestanding -mcmodel=kernel -mno-red-zone
is
-xmodel=kernel
Sherry
On Sat, Feb 07, 2009 at 06:11:30PM -0800, Garrett D'Amore wrote:
> Andrew C. Henle wrote:
> >> Joachim Worringen wrote:
> >>
> >>> Greeting,
> >>>
> >>> using Sun cc (cc: Sun C 5.9 SunOS_i386 Patch
> >>>
> >> 124868-01 2007/07/12), I
> >>
> >>> compile my kernel module with -fast. This results
> >>>
> >> in memset(9F) calls
> >>
> >>> appearing as _memset calls in the object file,
> >>>
> >> which can not be resolved
> >>
> >>> on a SXCE 106 kernel.
> >>>
> >>> Is this a problem with my include files and
> >>>
> >> defines, the compiler
> >>
> >>> version, usage of -fast for kernel code?
> >>>
> >> P.S: -O3 works.
> >>
> >> Joachim
> >> -
> >> Joachim Worringen, Software Architect, Dolphin
> >> Interconnect Solutions
> >> phone ++49/(0)228/324 08 17 -
> >> http://www.dolphinics.com
> >> _______________________________________________
> >> opensolaris-code mailing list
> >> [email protected]
> >> http://mail.opensolaris.org/mailman/listinfo/opensolar
> >> is-code
> >>
> >
> > The "-fast" option expands to many other options involving optimization.
> > From the Sun Studio 12 man page for cc:
> >
> > <quote> These options are turned on for -fast:
> >
> > -fns (SPARC, x86)
> > -fsimple=2 (SPARC, x86)
> > -fsingle (SPARC, x86)
> > -nofstore (x86)
> > -xalias_level=basic (SPARC, x86)
> > -xbuiltin=%all (SPARC, x86)
> > -xdepend (SPARC, x86)
> > -xlibmil (SPARC, x86)
> > -xlibmopt (SPARC)
> > -xmemalign=8s (SPARC)
> > -xO5 (SPARC, x86)
> > -xprefetch=auto,explicit (SPARC)
> > -xregs=frameptr (x86)
> > -xtarget=native (SPARC, x86)
> > </quote>
> >
>
> Its probably -xbuiltin=%all.
>
> I seem to recall an option (don't recall the precise one) that was akin
> to GCC's -ffreestanding (which indicates that the compiler should not
> make any assumptions about standard libraries.)
>
> -- Garrett
> > One (or more) of those is causing your call to "memset()" to be replaced
> > with a call to "_memset()".
> >
> > You can probably add those options to your build one at a time until the
> > problem appears.
> >
>
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> http://mail.opensolaris.org/mailman/listinfo/opensolaris-code
--
Sherry Moore, Solaris Core Kernel http://blogs.sun.com/sherrym
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