Re: Debugger Links.

"Joachim Durchholz" <joachim.durchholz@halstenbach.com.or.de>
30 Apr 2000 00:18:11 -0400

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Related articles
Debugger Links. naresh.chainani@informix.com (Naresh Chainani) (2000-04-25)
Re: Debugger Links. bob.zulawnik@NOSPAM.cportcorp.com (Bob Zulawnik) (2000-04-26)
Re: Debugger Links. joachim.durchholz@halstenbach.com.or.de (Joachim Durchholz) (2000-04-30)
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From: "Joachim Durchholz" <joachim.durchholz@halstenbach.com.or.de>
Newsgroups: comp.compilers
Date: 30 Apr 2000 00:18:11 -0400
Organization: Compilers Central
References: 00-04-178 00-04-192
Keywords: debug

A minor nit to pick...


Bob Zulawnik <bob.zulawnik@NOSPAM.cportcorp.com> wrote:
>
> Some CPUs (notably x86) provide a hardware support for
> single-stepping. It is a single-step bit, which when toggled causes
> single-stepping (i.e. trapping after executing a single user-mode
> instruction).


Agreed. However, ...


> In this case there is no need to place breakpoints.


Only if the user is single-stepping. It would be a very bad idea to
implement breakpoints by singlestepping and comparing the instruction
pointer with breakpoint addresses.


Regards,
Joachim

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