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From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] question about interrupt
Date: Tue, 20 May 2008 14:31:24 +0200	[thread overview]
Message-ID: <20080520123124.62C4124312@gemini.denx.de> (raw)
In-Reply-To: Your message of "Tue, 20 May 2008 15:10:13 +0530." <7f245da80805200240o7dde7b3bl83875b910d69ad08@mail.gmail.com>

In message <7f245da80805200240o7dde7b3bl83875b910d69ad08@mail.gmail.com> you wrote:
>
> So if someone enable a interrupt and handled it properly then at the
> time of interrupt handler will be called, but how then control reaches
> back to u-boot original task that was running prior to interrupt

That's just a normal return from interrupt, like you return from a
normal function call.

> delivery? I mean who is taking care of context switch at the time of
> interrupts?

There is no such thing as a context switch.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"Anyone attempting to generate random numbers by deterministic  means
is, of course, living in a state of sin."          - John Von Neumann

  reply	other threads:[~2008-05-20 12:31 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-20  2:11 [U-Boot-Users] question about interrupt loody
2008-05-20  5:18 ` Chetan Nanda
2008-05-20  5:53   ` loody
2008-05-20  8:36     ` Chetan Nanda
2008-05-20  9:23       ` Wolfgang Denk
2008-05-20  9:40         ` Chetan Nanda
2008-05-20 12:31           ` Wolfgang Denk [this message]
2008-05-20  8:36     ` Andreas Schweigstill
2008-05-20  9:25       ` Wolfgang Denk

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