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Re: PTRACE_SINGLESTEP into signal handler

From: Andrew Cagney <ac131313 at redhat dot com>
To: Ulrich Weigand <Ulrich dot Weigand at de dot ibm dot com>
Cc: Daniel Jacobowitz <drow at false dot org>, gdb at sources dot redhat dot com
Date: Mon, 29 Nov 2004 10:36:27 -0500
Subject: Re: PTRACE_SINGLESTEP into signal handler
References: <OF21C17974.4222162B-ON41256F5B.004DDFD9-41256F5B.004E0D45@de.ibm.com>

Ulrich Weigand wrote:

Daniel Jacobowitz <drow@false.org> wrote on 11/28/2004 12:28:14 AM:

I'm pretty sure that the answer is yes - we should stop on the first
instruction.  It does seem a little strange as a behavior when
requesting single-step to step no instructions, but we have no other
way to get to the beginning of the handler.  i386 was changed recently.

Yes, I, Roland, Woodhouse (and?) have been quietly working through this for PPC, amd64 and i386; I guess it's time to make some noise ;-)

Ok; so we'll change the s390 kernel to also stop at the beginning of
the handler.  I've asked Martin to push the patch upstream.

Ref: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=133799

Andrew

References:
- Re: PTRACE_SINGLESTEP into signal handler
  - From: Ulrich Weigand

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