Re: [Openocd-development] cortex breakpoint trouble, R546

[Edwin O. <eo...@mi...>]

Øyvind Harboe wrote:
>>  It seems that a four-byte length breakpoint is requested, but only two
>>  byte breakpoints are supported by the cortex target. Any suggestions?
>>     
>
> Which version of GDB are you using and how was it built?
>   
The "Lite" version of CodeSourcery, 6.6.50.20070821-cvs, which was 
configured with --target=arm-none-eabi.

> You can also try disabling software breakpoints. Remember to remove
> other breakpoints first so you don't run out of hw breakpoints for
> evaluating the expression.
>   
My reading of the cortex target code seems to indicate that it will 
automatically use hardware breakpoints whenever the breakpoint lives in 
flash (which sounds right to me). So I believe the request for a 
software breakpoint (Z0) is automatically being converted into a 
hardware breakpoint.

I don't understand what they mean by the "length" of a breakpoint. Is 
that the length of the instruction "patch"?

-Ed


-Ed