[Patch] Extended flash support

[Mike Wrighton]

Hi,

I have a patch which extends the current flash support for embedded 
targets in the following ways:

1. A new command, "flash-erase" has been added which erases all regions 
of flash memory.
2. A -verify option has been added to the load command which enables 
post-load verification (this applies to both flash and non-flash memory 
regions).

I have a question regarding testcases of these features, as both parts 
are less than straightforward to verify. Part 1 would require creating a 
dummy target with some flash memory regions and adding some support for 
the flash packets (e.g. vFlashErase) in gdbserver. Part 2 would probably 
require creating a target which returns corrupted data after the load, 
forcing a verify error. Are these testcases required, and if so, are 
there any existing examples for testing features that are currently 
unimplemented in gdbserver?

Thanks,
Mike


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