Re: [Linux-ia64] atomic add instruction

From: David Mosberger <>
Date: 2001-07-19 07:32:26
There are compiler intrinisics for this purpose.  See the IA-64
processor-specific ABI for a description.  You have to include
<ia64intrin.h> to get the intrinsics defined.


>>>>> On Tue, 17 Jul 2001 15:09:46 -0700, "Swaminathan Sivasubramanian" <> said:

  Swami> Hello Everyone,

  Swami> I want an atomic function that does addition of a constant to
  Swami> the value in a memory location and returns the previous value
  Swami> in that location.

  Swami>  Is there any macro/function defined in IA-64's atomic.h
  Swami> already. (will fetch-and-add solve the purpose?) or one
  Swami> should write his own function for it

  Swami> Thanking in advance, Swami

  Swami> _______________________________________________ Linux-IA64
  Swami> mailing list
Received on Wed Jul 18 14:32:29 2001

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