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Mikael Pettersson
*nix forums beginner
Joined: 29 Aug 2005
Posts: 16
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 Posted: Mon Jul 10, 2006 9:18 am Post subject:
Re: Are ARM based 'boxes' available to buy ?
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In article <7zwtalop60.fsf@app-2.diku.dk>,
Torben Ęgidius Mogensen <torbenm@app-2.diku.dk> wrote:
| Quote: | Having a "register" that takes on special values (0, -1, PC, ...)
depending on the instruction seems more useful than the constant-zero
register you find on MIPS and others.
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I disagree. PowerPC has this "feature" (r0 is either a constant
0 or a normal GPR depending on the instruction) and it just
causes special cases and confusion in a compiler backend.
--
Mikael Pettersson (mikpe@csd.uu.se)
Computing Science Department, Uppsala University |
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Torben Ęgidius Mogensen
*nix forums beginner
Joined: 15 Apr 2005
Posts: 20
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| Posted: Mon Jul 10, 2006 10:01 am Post subject:
Re: Are ARM based 'boxes' available to buy ?
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mikpe@harpo.csd.uu.se (Mikael Pettersson) writes:
| Quote: | In article <7zwtalop60.fsf@app-2.diku.dk>,
Torben Ęgidius Mogensen <torbenm@app-2.diku.dk> wrote:
Having a "register" that takes on special values (0, -1, PC, ...)
depending on the instruction seems more useful than the constant-zero
register you find on MIPS and others.
I disagree. PowerPC has this "feature" (r0 is either a constant
0 or a normal GPR depending on the instruction) and it just
causes special cases and confusion in a compiler backend.
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I think your problem is related to the fact that it _can_ be used as a
GPR, so the register allocator tries to use it (when its use doen't
conflict with the restrictions). If it can't be used as a GPR, you
just never allocate it, but only use it to encode special variants of
other instructions. I.e., it is only in the instruction selection
process that you need to worry about this register.
I would probably do the same in a compiler for the PPC -- with 32
registers, you can afford to have one that the register allocator
doesn't touch, but only use in prologues and epilogues of functions or
as a temporary register when encoding one intermediate-language
instruction a several PPC instructions (and, hence, know if these
instructions use it as 0 or not).
Torben |
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Henrik Carlqvist
*nix forums Guru
Joined: 19 Feb 2005
Posts: 648
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| Posted: Wed Jul 19, 2006 5:24 pm Post subject:
Re: problems mounting external drive
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"onetitfemme" <onetitfemme2005@yahoo.com> wrote:
| Quote: | I am trying to mount my external drive. I think it had a FAT32
partition of 80Gb (the whole drive), but I am not able to.
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Did that partition contain any important data?
| Quote: | sh-3.1# fdisk -l /dev/sda
Disk /dev/sda: 80.0 GB, 80037281792 bytes
255 heads, 63 sectors/track, 9730 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sda doesn't contain a valid partition table
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For some reason the partition table is lost. Maybe all data has also been
lost for the same reason. If the drive didn't contain anything important
the quick and easy fix would probably be to run fdisk, add a partition
format that partition and then mount it.
If you want to try to save some data it would be safest if you started
with an image of your disk. This way you can experiment with the image
without risking damaging the disk contents even more:
dd if=/dev/sda of=/var/tmp/sda.img
regards Henrik
--
The address in the header is only to prevent spam. My real address is:
hc8(at)uthyres.com Examples of addresses which go to spammers:
root@variousus.net root@localhost |
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Bit Twister
*nix forums Guru
Joined: 19 Feb 2005
Posts: 1546
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| Posted: Thu Jul 20, 2006 1:04 am Post subject:
Re: Test of Posting to Newsgroup
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On Wed, 19 Jul 2006 20:02:11 -0500, Clois Beckwith wrote:
| Quote: | Running a test of writing to Newsgroups Specific.
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Welcome to the group.
Since the post showed up here, the test failed. 
Do you know about the 400+ test groups on Usenet.
Some interesting information may be found in
http://livinginternet.com/u/uu_test.htm
Please use something like alt.test or misc.test .
For binary test use something like alt.binaries.test
Please, before you post again, read
http://tgos.org/newbie/index2.html
http://www.catb.org/~esr/faqs/smart-questions.html |
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left_coast
*nix forums addict
Joined: 23 May 2006
Posts: 62
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| Posted: Thu Jul 20, 2006 10:50 pm Post subject:
Re: Test of Posting to Newsgroup
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Chris F.A. Johnson wrote:
| Quote: | On 2006-07-20, test dirt wrote:
Michael Black wrote:
Note the bozo posted to
alt.linux.suse
alt.os.linux.dial-up
alt.os.linux.suse
at.linux
comp.os.linux.hardware
comp.os.linux.setup
so not only did he not bother with a test newsgroup, but he couldn't
even limit it to one newsgroup.
And you reply-post to half of those.
Makes you look like a half-assed bozo.
Which is, at most, half as bad as the OP and his defenders.
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That is only a matter of degree, you are still guilty of the same as "the OP
and his defenders".
--
Still waiting for a rational answer from Bittwister to this:
<nfqlo3-qds.ln1@alta.sierrandays.org>. |
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