From: Clemens Koller <clemens.koller@anagramm.de>
To: David Newall <david@davidnewall.com>
Cc: Siva Prasad <sprasad@bivio.net>, linux-kernel@vger.kernel.org
Subject: Re: printf internals
Date: Fri, 14 Dec 2007 17:15:49 +0100 [thread overview]
Message-ID: <4762AC35.3010706@anagramm.de> (raw)
In-Reply-To: <4761E289.9070007@davidnewall.com>
David Newall schrieb:
> Siva Prasad wrote:
>> I am looking at how exactly does the printf in user programs succeeds in
>> displaying characters to the serial console.
>
> Is it a student assignment? This is so not the right mailing list.
Come on, are we playing hide and seek here?
You can use strace to follow a typical hello world example and
see what device it opens to feed the hello out.
I.e. it can be to the current /dev/ttyX and not to /dev/console
or if you are logged in via SSH to a machine, the device
is again different... or if you use screen, ...
Work your way from there and then use a Linux Source code
Cross Reference (lxr, ask Google for one) and follow the code.
Regards,
--
Clemens Koller
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next prev parent reply other threads:[~2007-12-14 16:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 0:07 printf internals Siva Prasad
2007-12-14 1:55 ` David Newall
2007-12-14 16:15 ` Clemens Koller [this message]
2007-12-19 22:33 ` Siva Prasad
2007-12-19 23:31 ` Scott Russell
2007-12-19 23:31 ` Siva Prasad
2007-12-20 0:04 ` Masoud Sharbiani "مسعود شربیانی"
2007-12-22 3:42 ` Richard D
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