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From: Helge Deller <deller@gmx.de>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: dave.anglin@nrc-cnrc.gc.ca, linux-parisc@vger.kernel.org,
	carlos@systemhalted.org, randolph@tausq.org
Subject: Re: Out of order unwind entry warning
Date: Thu, 29 Oct 2009 23:22:04 +0100	[thread overview]
Message-ID: <4AEA158C.10005@gmx.de> (raw)
In-Reply-To: <20091029210733.96E8B4E38@hiauly1.hia.nrc.ca>

On 10/29/2009 10:07 PM, John David Anglin wrote:
>>> Still need to look at readelf -u on .o's.
>>
>> Yes, I see this too. readelf -u doesn't print any longer the second line of:
>> <arch_mod_section_prepend>: [0x1011fc4c-0x1011fc74]
>>             Entry_GR=1 Save_SP Total_frame_size=8
>
> Actually, the entries are still there.  For weak functions that
> are not used, they appear as "<foo+x>:" where foo is the closest
> preceding symbol before the unused weak function.  In practice,
> the code shouldn't be entered, so the lack of an associated function
> symbol shouldn't matter.
>
> I have a fix for the readelf -u bug.  See below.

Sorry, but I don't fully understand...

With your patch to gas, the unwind info for the weak functions are completely gone in the final executable (which is good).

But "readelf -u" doesn't show the "Entry_GR=..." lines for _any_ function any longer (in the final executable).
I really mean _all_ functions, weak, non-weak, standard, ...
The patch you attached only changes the start and end addresses of the symbols...?

Helge

  reply	other threads:[~2009-10-29 22:22 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-26 22:21 Out of order unwind entry warning Helge Deller
2009-10-26 23:41 ` Kyle McMartin
2009-10-27  1:50   ` Randolph Chung
2009-10-27  2:24     ` Kyle McMartin
2009-10-27 23:19 ` John David Anglin
2009-10-28 21:42   ` Helge Deller
2009-10-28 22:00     ` Helge Deller
2009-10-28 23:10       ` John David Anglin
2009-10-29 20:51         ` Helge Deller
2009-10-29 13:20       ` Carlos O'Donell
2009-10-28 22:18     ` John David Anglin
2009-10-28 22:43       ` Helge Deller
2009-10-28 22:59         ` Helge Deller
2009-10-29  2:11           ` John David Anglin
2009-10-29 16:38             ` John David Anglin
2009-10-29 19:16           ` John David Anglin
2009-10-29 20:46             ` Helge Deller
2009-10-29 21:07               ` John David Anglin
2009-10-29 22:22                 ` Helge Deller [this message]
2009-10-29 23:35                   ` John David Anglin
2009-10-30 22:47                     ` Helge Deller
2009-10-31  0:41                       ` John David Anglin
2009-10-31  2:19                         ` John David Anglin
2009-10-31  7:39                           ` Helge Deller
2009-11-01 23:16                       ` John David Anglin
2009-11-02  1:40                         ` John David Anglin
2009-11-02  2:34                           ` John David Anglin
2009-11-02 21:02                             ` Helge Deller
2009-11-02 21:50                               ` John David Anglin
2009-11-02 22:20                                 ` Helge Deller
2009-11-02 22:31                                   ` James Bottomley
2009-11-02 22:43                                     ` Helge Deller
2009-11-02 22:52                                   ` Helge Deller
2009-11-02 23:23                                     ` John David Anglin
2009-11-03 21:10                                       ` Helge Deller
2009-11-03 21:36                                         ` John David Anglin
2009-11-03 21:43                                           ` Helge Deller
2009-11-03 21:54                                             ` John David Anglin
2009-11-03 22:04                                               ` Helge Deller
2009-11-04  0:57                                                 ` John David Anglin
2009-11-06 23:07                                                   ` Helge Deller
2009-11-07 20:11                                                     ` Kyle McMartin

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