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Re: configure.in support for FreeBSD ia64/sparc64/powerpc
From: |
Dan Nicolaescu |
Subject: |
Re: configure.in support for FreeBSD ia64/sparc64/powerpc |
Date: |
Fri, 19 Dec 2008 09:16:00 -0800 (PST) |
Ulrich Mueller <address@hidden> writes:
> >>>>> On Mon, 6 Nov 2006, Giorgos Keramidas wrote:
>
> >On 2006-11-03 22:28, Chong Yidong <address@hidden> wrote:
> >>Giorgos Keramidas <address@hidden> writes:
> >>> The following change makes Emacs buildable on FreeBSD running on
> >>> sparc64, ia64 and powerpc too. It has been tested for some time
> >>> as a local patch in the editors/emacs-devel port of FreeBSD, so it
> >>> would be nice if it became part of Emacs 22. We won't have to
> >>> maintain local diffs for this part then:
> >>>
> >>> --- a/src/alloc.c Fri Oct 27 15:45:51 2006 +0000
> >>> +++ b/src/alloc.c Sat Oct 28 01:49:45 2006 +0300
> >>> @@ -4560,7 +4560,11 @@ mark_stack ()
> >>> needed on ia64 too. See mach_dep.c, where it also says inline
> >>> assembler doesn't work with relevant proprietary compilers.
> >>> */
> >>> #ifdef sparc
> >>> +#ifdef __sparc64__
> >>> + asm ("flushw");
> >>> +#else
> >>> asm ("ta 3");
> >>> +#endif
> >>> #endif
> >>
> >> Is this change correct for non-FreeBSD sparc64 systems too?
> >> (I don't know anything about this part of the code.)
>
> > Sorry for taking so long to follow up about this. I tried looking
> > at the sparc v9 specification for hints about why this change is
> > needed on 64-bit SPARC platforms, but I couldn't come up with
> > anything in a reasonable amount of time. I am not that proficient
> > with SPARC64 assembly, but I will ask our FreeBSD/sparc64 people for
> > details.
>
> > I'll follow up again when I get a reply from the people who know more
> > about sparc64 assembly :)
>
> Following up to this message from two years ago. ;-)
>
> Gentoo also maintains the above as local patch, both for FreeBSD and
> GNU/Linux. Our Sparc team says that the patch is sane, and without it
> Emacs cannot be built on Sparc/FreeBSD. See Gentoo Bug 159584 for
> further details: <http://bugs.gentoo.org/159584>
>
> Below is a slightly updated patch that will apply to the currect CVS
> trunk. It would be nice if it could make it into Emacs 23.
>
> Ulrich
>
> --- emacs-orig/src/alloc.c
> +++ emacs/src/alloc.c
> @@ -4573,7 +4573,11 @@
> needed on ia64 too. See mach_dep.c, where it also says inline
> assembler doesn't work with relevant proprietary compilers. */
> #ifdef __sparc__
> +#ifdef __sparc64__
> + asm ("flushw");
> +#else
Was this tested on GNU/Linux and Solaris (and all other sparc64
platforms)? Otherwise better make that #ifdef depend on FreeBSD.
> asm ("ta 3");
> +#endif
> #endif
>
> /* Save registers that we need to see on the stack. We need to see
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Ulrich Mueller, 2008/12/19
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc,
Dan Nicolaescu <=
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Ulrich Mueller, 2008/12/19
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Giorgos Keramidas, 2008/12/19
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Ulrich Mueller, 2008/12/21
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Ulrich Mueller, 2008/12/29
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Dan Nicolaescu, 2008/12/29
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Ulrich Mueller, 2008/12/29
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Dan Nicolaescu, 2008/12/29
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Ulrich Mueller, 2008/12/29
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Giorgos Keramidas, 2008/12/29
- Re: configure.in support for FreeBSD ia64/sparc64/powerpc, Dan Nicolaescu, 2008/12/29