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From: Carlos O'Donell <carlos@baldric.uwo.ca>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: hans_boehm@hp.com, parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Program counter from sigcontext, constructors
Date: Sat, 26 Apr 2003 17:24:42 -0400	[thread overview]
Message-ID: <20030426212442.GB14330@systemhalted> (raw)
In-Reply-To: <200304261733.h3QHXo9P001332@hiauly1.hia.nrc.ca>

> This is a bug in 3.0.4.  If you look at the assembler output for the
> testcase, you will see the following:
> 
> 	.section	.ctors,"aw"
> 	.long	my_start
> 
> This is incorrect.  The code should be:
> 
> 	.section	.ctors,"aw",@progbits
> 	.align	4
> 	.word	P%my_start
> 
> Using a plabel constructor causes $$dyncall to correctly load the
> pic register for the call to my_start.  This is necessary because
> the startup file crtbegin.o is not compiled as pic code and the
> code in __do_global_ctors_aux clobbers the pic register.

Good catch. I hadn't bothered looking at the .S!
Again the recommendation is going to be "Use a newer gcc" :)

c.

  reply	other threads:[~2003-04-26 21:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-25 20:21 [parisc-linux] Program counter from sigcontext, constructors Boehm, Hans
2003-04-25 21:37 ` John David Anglin
2003-04-26 16:08   ` Carlos O'Donell
2003-04-26 17:33     ` John David Anglin
2003-04-26 21:24       ` Carlos O'Donell [this message]
2003-04-27  0:28         ` John David Anglin

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