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Message-ID: <41867EA4.2030801@gnu.org>
Date: Mon, 01 Nov 2004 18:22:00 -0000
From: Andrew Cagney <cagney@gnu.org>
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To: Kip Macy <kmacy@eventdriven.org>
Cc: Bob Rossi <bob@brasko.net>, GDB <gdb@sources.redhat.com>
Subject: Re: changing stack and instruction pointer
References: <20041101151834.GA2460@white> <20041101080214.W37379@demos.bsdclusters.com>
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Kip Macy wrote:
> Any user-level threads package would do the same. There must be
> something more going on.

Yes.  Is valgrind doing something else like playing with ptrace?

> On Mon, 1 Nov 2004, Bob Rossi wrote:
> 
> 
>>Hi,
>>
>>If a program modifies the stack and instruction pointer ( like valgrind
>>does ), is it possible to debug this program? For some reason, after
>>valgrind sets these registers, GDB doesn't seem to understand anything about
>>the program.
>>
>>Is it possible to debug a program like this?
>>
>>Thanks,
>>Bob Rossi
>>
> 
>