From: "Blue Swirl" <blauwirbel@gmail.com>
To: Paul Brook <paul@codesourcery.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] qemu/pc-bios README openbios-sparc32 openbios-s...
Date: Sun, 15 Apr 2007 22:37:08 +0300 [thread overview]
Message-ID: <f43fc5580704151237x4a2b7418pfb1f6f2de733f084@mail.gmail.com> (raw)
In-Reply-To: <200704152020.17217.paul@codesourcery.com>
On 4/15/07, Paul Brook <paul@codesourcery.com> wrote:
> On Sunday 15 April 2007 20:11, Blue Swirl wrote:
> > > Probably the linker is making sure the file offset and VMA are the same
> > > modulo the page size.
> >
> > But that would be one huge file, as the VMA is near 2TB:
>
> I said *modulo the pace size* :-)
> Lets say ld thinks the page size for your system is 1Mb (nor an unreasonable
> assumption). The vma of .text is aligned on a 1Mb boundary. In order to
> allow loading via mmap, the location of .text within the file must also be
> aligned on a 1Mb boundary. It can't put it at address zero because the ELF
> headers get in the way, so the first viable location is 1Mb into the file.
Nice theory (and I missed the modulo arithmetic, sorry), but on
Ultrasparc the page sizes available are 8k, 64k, 4M and 256M.
next prev parent reply other threads:[~2007-04-15 19:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-15 6:38 [Qemu-devel] qemu/pc-bios README openbios-sparc32 openbios-s Blue Swirl
2007-04-15 12:42 ` Stefan Weil
2007-04-15 15:03 ` Blue Swirl
2007-04-15 19:01 ` Paul Brook
2007-04-15 19:11 ` Blue Swirl
2007-04-15 19:20 ` Paul Brook
2007-04-15 19:37 ` Blue Swirl [this message]
2007-04-15 22:08 ` Daniel Jacobowitz
2007-04-16 15:01 ` Blue Swirl
2007-04-16 15:13 ` Daniel Jacobowitz
2007-04-16 16:23 ` Blue Swirl
2007-04-16 15:30 ` Thiemo Seufer
-- strict thread matches above, loose matches on Subject: below --
2007-04-16 17:41 Blue Swirl
2007-06-28 7:28 Blue Swirl
2007-06-28 13:49 ` Johannes Schindelin
2007-06-28 14:00 ` Blue Swirl
2007-06-28 14:08 ` Johannes Schindelin
2007-08-11 8:16 Blue Swirl
2007-11-14 19:41 Blue Swirl
2007-12-11 19:33 Blue Swirl
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