From: Carlos O'Donell <carlos@baldric.uwo.ca>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: dave.anglin@nrc-cnrc.gc.ca, parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Re: Found the r19 problem!
Date: Sun, 21 Sep 2003 14:55:31 -0400 [thread overview]
Message-ID: <20030921185531.GH6963@systemhalted> (raw)
In-Reply-To: <20030921185311.GG6963@systemhalted>
> So use a caller saves register, place it in the clobbers, and let gcc
> work around the usage (e.g. r4).
>
> > > ...
> > > (Many insn later)
> > > (stub) (dyncall) -> libpthread.so
> > > -> libc.so
> >
> > The above is an indirect call. r19 should be restored after the call
> > if it is used after the call.
>
> It is, but only after the asm(...) that lists r19 in the clobber.
>
Sorry "It is" should read "It is used" :)
Things get tricky in email with complex issues.
c.
next prev parent reply other threads:[~2003-09-21 18:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-19 13:56 [parisc-linux] r19 (aka pic-register akak ltp) not restored on entry back to libc from libpthread? Carlos O'Donell
2003-09-19 16:56 ` John David Anglin
2003-09-19 17:51 ` Carlos O'Donell
2003-09-19 18:26 ` James Bottomley
2003-09-19 18:55 ` [parisc-linux] r19 (aka pic-register akak ltp) not restored on John David Anglin
2003-09-19 19:28 ` Carlos O'Donell
2003-09-19 20:10 ` John David Anglin
2003-09-21 15:45 ` [parisc-linux] Found the r19 problem! Carlos O'Donell
2003-09-21 16:39 ` [parisc-linux] " John David Anglin
2003-09-21 18:53 ` Carlos O'Donell
2003-09-21 18:55 ` Carlos O'Donell [this message]
2003-09-21 19:12 ` John David Anglin
2003-09-21 19:16 ` Carlos O'Donell
2003-09-21 19:18 ` John David Anglin
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