From: Andreas Schwab <schwab@suse.de>
To: Richard.Earnshaw@arm.com
Cc: gdb-patches@sources.redhat.com
Subject: Re: [rfa?] Add frame_align(); Was: ARM stack alignment on hand called functions
Date: Thu, 28 Nov 2002 02:20:00 -0000 [thread overview]
Message-ID: <jer8d65732.fsf@sykes.suse.de> (raw)
In-Reply-To: <200211280926.gAS9QJE06150@pc960.cambridge.arm.com> (Richard Earnshaw's message of "Thu, 28 Nov 2002 09:26:19 +0000")
Richard Earnshaw <rearnsha@arm.com> writes:
|> > +/* Ensure that the ARM's stack pointer has the correct alignment for a
|> > + new frame. */
|> > +static CORE_ADDR
|> > +arm_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
|> > +{
|> > + return (addr & -16);
|> > +}
|>
|> Yuck, two's complement assumption.
No, -16 is implicitly cast to bfd_vma, which is unsigned, and this
operation is completely defined independent of the representation of
signed integers.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2002-11-28 10:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200211270917.gAR9HNE29771@pc960.cambridge.arm.com>
2002-11-27 10:43 ` Andrew Cagney
2002-11-28 1:26 ` Richard Earnshaw
2002-11-28 2:20 ` Andreas Schwab [this message]
2002-11-28 2:41 ` Richard Earnshaw
2002-11-28 2:45 ` Andreas Schwab
2002-11-28 2:57 ` Richard Earnshaw
2002-11-28 5:52 ` Keith Walker
2002-11-28 7:34 ` Andrew Cagney
2002-11-28 7:19 ` Andrew Cagney
2002-11-28 8:33 ` Richard Earnshaw
2002-11-28 8:45 ` Andrew Cagney
2002-11-28 8:50 ` Richard Earnshaw
2002-11-28 9:00 ` Andrew Cagney
2003-01-29 5:19 ` Andrew Cagney
2003-01-29 14:50 ` Kris Warkentin
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