Re: Debugger Links.

"Joachim Durchholz" <>
30 Apr 2000 00:18:11 -0400

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From: "Joachim Durchholz" <>
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 <> 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.


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