From: Randolph Chung <randolph@tausq.org>
To: Joel Soete <soete.joel@tiscali.be>
Cc: John David Anglin <dave@hiauly1.hia.nrc.ca>,
parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] c3k panics
Date: Mon, 30 May 2005 23:26:19 -0700 [thread overview]
Message-ID: <20050531062619.GI3050@tausq.org> (raw)
In-Reply-To: <4282FEEE0000724C@mail-5-bnl.tiscali.it>
> Ok clear but still confused why 32bit branch doesn't nullify the insn
> in delay slot like did 64bit?
it's a bug, but fortunately that copy of the fixup_branch macro (in
syscall.S) isn't actually used ;-) I'll remove it.
> btw one more thing confusing me: the third fixup_branch macro definition
> in lusercopy.S:
> [snip]
> .macro fixup_branch,lbl
> ldil L%\lbl, %r1
> ldo R%\lbl(%r1), %r1
> bv %r0(%r1)
> .endm
>
> This time just bv not bv,n ?
Yes, if you look at where the macro is used you will see that there is
an instruction in the delay slot for the branch that should be executed.
randolph
--
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/
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next prev parent reply other threads:[~2005-05-31 6:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-31 5:41 [parisc-linux] c3k panics Joel Soete
2005-05-31 6:26 ` Randolph Chung [this message]
2005-06-01 13:11 ` Joel Soete
2005-06-01 13:55 ` John David Anglin
2005-06-05 19:15 ` Some other cleanup [Was: [parisc-linux] c3k panics] Joel Soete
-- strict thread matches above, loose matches on Subject: below --
2005-06-01 15:05 [parisc-linux] c3k panics Joel Soete
[not found] <429A0B7C.3020003@tiscali.be>
2005-05-29 20:49 ` John David Anglin
2005-05-29 1:41 John David Anglin
2005-05-29 1:50 ` John David Anglin
2005-05-29 22:08 ` Carlos O'Donell
2005-05-29 23:39 ` John David Anglin
2005-05-29 10:32 ` Joel Soete
2005-05-29 17:15 ` Joel Soete
2005-05-30 1:13 ` Randolph Chung
2005-06-01 14:04 ` Joel Soete
2005-05-29 17:45 ` John David Anglin
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