From: Mark Kettenis <kettenis@chello.nl>
To: hjl@lucon.org
Cc: eliz@gnu.org, cagney@gnu.org, gdb@sources.redhat.com
Subject: Re: [6.2] PROBLEMS file
Date: Thu, 22 Jul 2004 20:58:00 -0000 [thread overview]
Message-ID: <200407222051.i6MKpm8V003302@elgar.kettenis.dyndns.org> (raw)
In-Reply-To: <20040721211632.GA26232@lucon.org> (hjl@lucon.org)
Date: Wed, 21 Jul 2004 14:16:32 -0700
From: "H. J. Lu" <hjl@lucon.org>
FYI, the i386 psABI, which is also used by the x86-64 psABI, says:
%ebp The content of this register is unspecified at process
initialization time, but the user code should mark the
deepest stack frame by setting the frame pointer to zero.
No other frame's %ebp should have a zero value.
Which contradicts the optional nature of %ebp as a frame pointer. So
the standard contradicts itself. Anyway, in practice the %ebp == 0
condition is useless.
Mark
next prev parent reply other threads:[~2004-07-22 20:51 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-19 3:51 Andrew Cagney
2004-07-19 21:01 ` Eli Zaretskii
2004-07-21 21:12 ` Mark Kettenis
2004-07-21 22:05 ` H. J. Lu
2004-07-22 20:58 ` Mark Kettenis [this message]
2004-07-22 21:33 ` Joel Brobecker
2004-07-22 21:38 ` H. J. Lu
2004-07-21 22:17 ` Andrew Cagney
2004-07-22 7:13 ` Eli Zaretskii
2004-07-22 13:04 ` Dave Korn
2004-07-22 15:17 ` Daniel Jacobowitz
2004-07-22 12:14 Michael Elizabeth Chastain
2004-07-22 18:28 ` Joel Brobecker
2004-07-22 19:26 ` Eli Zaretskii
2004-07-22 20:51 ` Mark Kettenis
2004-07-23 9:24 ` Eli Zaretskii
2004-07-23 11:22 ` Mark Kettenis
2004-07-23 12:03 ` Eli Zaretskii
2004-07-23 12:13 ` Eli Zaretskii
2004-07-23 12:16 ` Dave Korn
2004-07-23 13:36 ` Mark Kettenis
2004-07-23 16:17 ` Eli Zaretskii
2004-07-23 5:44 Michael Elizabeth Chastain
2004-07-23 20:44 ` Andrew Cagney
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