From: Richard Henderson <rth@redhat.com>
To: Danny Smith <dannysmith@users.sourceforge.net>
Cc: gcc@gcc.gnu.org, Cygwin <cygwin@cygwin.com>,
mingw-dvlpr <mingw-dvlpr@lists.sourceforge.net>
Subject: Re: stdcall lib functions with exception throwing callbacks vs Dwarf2 EH
Date: Wed, 24 Nov 2004 00:47:00 -0000 [thread overview]
Message-ID: <20041124003240.GA6028@redhat.com> (raw)
In-Reply-To: <001701c4d1ab$949322e0$0a6d65da@DANNY>
On Wed, Nov 24, 2004 at 11:27:11AM +1300, Danny Smith wrote:
> Before I pull any more hair out trying, does any one have any hints on
> how to use an MD_FALLBACK_FRAME_STATE_FOR to workaround ...
That would be wrong.
I think the most likely explanation is that there's a bug in the
dwarf2 generator for stdcall functions with -fomit-frame-pointer,
and the problem should be attacked there.
If you've got a call that takes 12 bytes of arguments on the stack
and pop them on return, then the unwind info should look like
# DW_CFA_GNU_args_size 12
call foo
# DW_CFA_def_cfa_offset <previous value - 12>
r~
next prev parent reply other threads:[~2004-11-24 0:32 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-23 22:41 Danny Smith
2004-11-24 0:47 ` Richard Henderson [this message]
2004-11-24 7:08 ` Ranjit Mathew
2004-11-24 8:08 ` Danny Smith
2004-11-24 8:26 ` Richard Henderson
2004-11-24 9:41 ` Aaron W. LaFramboise
2004-11-24 17:40 ` Richard Henderson
2004-11-24 18:19 ` Andrew Haley
2004-11-24 8:40 ` Danny Smith
2004-11-24 19:00 ` Richard Henderson
2004-11-24 19:57 ` Andrew Pinski
2004-11-24 20:02 ` Richard Henderson
2004-11-24 21:23 ` Danny Smith
2004-11-24 6:34 ` Aaron W. LaFramboise
2004-11-24 6:58 ` Christopher Faylor
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