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Date: Mon, 16 Jun 2008 00:58:41 -0700
From: Maxim Sobolev <sobomax@FreeBSD.org>
Organization: Sippy Software, Inc.
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To: Julian Elischer <julian@elischer.org>
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Cc: FreeBSD Current <current@FreeBSD.org>
Subject: Re: mprof and new systems..
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I am not sure if it's what you are looking for, but there s a small 
BSD-licensed library at ports/devel/libexecinfo which provides portable 
way to retrieve call graph without using any asm() magick.

Julian Elischer wrote:
> mprof is a memory allocation profiler.
> 
> as part of what it does it reads the stack for a call graph.
> 
> it finds the current frame  pointer from the address of a variable on
> the stack
> and then from that traces back to previous return addresses.

Regards,
-- 
Maksym Sobolyev
Sippy Software, Inc.
Internet Telephony (VoIP) Experts
T/F: +1-646-651-1110
Web: http://www.sippysoft.com