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From: Simon Marchi <simon.marchi@polymtl.ca>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Justin Paston-Cooper <paston.cooper@gmail.com>, gdb@sourceware.org
Subject: Re: Command to break before exiting stack frame?
Date: Sun, 17 Mar 2019 00:23:00 -0000	[thread overview]
Message-ID: <431d242053ca491be67a21d0d95b71a4@polymtl.ca> (raw)
In-Reply-To: <87va0i74jq.fsf@igel.home>

On 2019-03-16 20:00, Andreas Schwab wrote:
> On Mär 16 2019, Justin Paston-Cooper <paston.cooper@gmail.com> wrote:
> 
>> I can't imagine that I am the first person to suggest or request this. 
>> Are
>> there any architectural or practical reasons as to why this is might 
>> be
>> difficult?
> 
> There may not even be a place where the frame is exited in the current
> function due to tail call.  Also, inline literal pools or jump tables
> can result in false positives when searching for return insns.
> 
> Andreas.

I suppose that the list of all function exit points (regardless of 
whether it is a jump or real return) is an information that the compiler 
could theoretically produce and encode in the DWARF information?

Simon


  reply	other threads:[~2019-03-17  0:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-16 23:15 Justin Paston-Cooper
2019-03-17  0:01 ` Andreas Schwab
2019-03-17  0:23   ` Simon Marchi [this message]
2019-03-17 13:59     ` Justin Paston-Cooper
2019-03-19 15:42       ` Tom Tromey
2019-03-19 20:44         ` Justin Paston-Cooper
2019-03-19 15:35     ` Tom Tromey

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