From: Daniel Jacobowitz <dan@codesourcery.com>
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: gdb@sourceware.org
Subject: Re: CORE_ADDR representation
Date: Thu, 18 Feb 2010 13:41:00 -0000 [thread overview]
Message-ID: <20100218134137.GA17163@caradoc.them.org> (raw)
In-Reply-To: <20100218103404.GA1597@host0.dyn.jankratochvil.net>
On Thu, Feb 18, 2010 at 11:34:04AM +0100, Jan Kratochvil wrote:
> these "& mask" parts can be removed. This masking was there already before
> start of the PIE(+OSX) patches.
I don't understand. How can the masking possibly be removed? If you
don't mask, 0x50000000 + 0x40000000 == 0x90000000 and that's not going
to work on MIPS where we need 0xffffffff90000000.
> I thought about their removal only just as a simplification in future but it
> looks to be required for mips*. Downloading some mips .iso if it will run in
> qemu to test it.
This won't show the same problem, you'll need to use mips-elf instead.
MIPS Linux places application code below 0x80000000 exclusively; MIPS
ELF (at least some versions) starts applications in KSEG0, at
0x80000000.
--
Daniel Jacobowitz
CodeSourcery
next prev parent reply other threads:[~2010-02-18 13:41 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-18 4:44 Daniel Jacobowitz
2010-02-18 5:42 ` Stan Shebs
2010-02-18 14:11 ` Daniel Jacobowitz
2010-02-18 23:04 ` Tom Tromey
2010-02-18 10:18 ` Mark Kettenis
2010-02-18 13:43 ` Daniel Jacobowitz
2010-02-19 19:27 ` Tom Tromey
2010-02-18 10:34 ` Jan Kratochvil
2010-02-18 13:41 ` Daniel Jacobowitz [this message]
2010-02-18 13:53 ` Jan Kratochvil
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