Condition continue debugger command

I just merged new experimental feature you might be find interesting.

The feature is ‘conditional continue’ and the syntax is:

 

Ø  Continue if <expression>

 

The continue will happen ONLY when expression is evaluated as TRUE.

For this reason new operators >, <, >=, <=, ==, != were added to the expression evaluation.

So now you could set a breakpoint in the beginning of function and write rc script which looks like:

 

-          Set breakpoint

-          c                              ; reach bp

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          c if rax < 10         ; actually it turns bp to conditional 

-          … how many false steps are expected ?

At the end you stopped on right break point!

 

Collection comments about the extension and ways to improve it, probably apply to other Bochs commands

 

Thanks,

Stanislav

 

From: Doug Gale [mailto:[email protected]] 
Sent: Monday, 16 January 2017 0:57
To: [email protected]
Subject: [Bochs-developers] Debugger improvements

 

I have made several improvements in the debugger. I have fixed several issues with proper handling of 64-bit addresses, and added support for 64 bit symbols. I have added several symbol lookups and rewritten info tab to walk PAE tables.

 

I would like these improvements to be merged into the project. How should I proceed?

 

You can browse my changes by looking at the commits at my github, at https://github.com/doug65536/bochs/commits/fix_64bit_symbols

 

Thanks

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