32-bit Thumb-2 breakpoints

Catalin Marinas catalin.marinas at arm.com
Wed Feb 3 06:52:22 EST 2010


On Wed, 2010-02-03 at 00:50 +0000, Daniel Jacobowitz wrote:
> On Tue, Feb 02, 2010 at 10:43:22PM +0000, Russell King - ARM Linux
> wrote:
> > Umm, today there were patches posted using hardware support for
> > breakpoints / watchpoints.  I've not read through those patches
> > yet, but in light of hardware support, do we really need this patch
> > anymore?
> 
> Yes, it's unrelated.  Hardware breakpoints are a constrained resource,
> but we can insert unlimited software breakpoints (and often need to
> exceed the hardware breakpoint limit).

I agree, we still need support for software breakpoints.

The main benefit of hardware debugging support is for watchpoints.

-- 
Catalin




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