From: David Edelsohn <dje@watson.ibm.com>
To: Brad Midgley <brad@pht.com>
Cc: linuxppc-dev@lists.linuxppc.org
Subject: Re: test & set ppc assembly (libgcj vs. threads)
Date: Mon, 02 Aug 1999 15:02:32 -0400 [thread overview]
Message-ID: <9908021902.AA36310@marc.watson.ibm.com> (raw)
In-Reply-To: Message from Brad Midgley <brad@pht.com> of "Mon, 02 Aug 1999 09:54:55 MDT." <Pine.LNX.3.95.990802095050.20647A-100000@pacific.pht.com>
The PowerPC User's Manuals provide an example in the appendix:
loop: lwarx r5, 0, r3 # load and reserve
cmpwi r5, 0 # compare to zero
bne $+12 # done if not equal
stwcx. r4, 0, r3 # try to store non-zero
bne- loop # loop if lost reservation
r3 = address
r4 = new value
r5 = old value
David
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prev parent reply other threads:[~1999-08-02 19:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-08-02 15:54 test & set ppc assembly (libgcj vs. threads) Brad Midgley
1999-08-02 18:49 ` Daniel Jacobowitz
1999-08-02 19:02 ` David Edelsohn [this message]
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