[U-Boot-Users] Using the abatron to debug an image in flash

[Detlev Zundel]

Hi Mark,

[...]

> As you can see the code appears to jump around aimlessly, though the
> program still appears to run ok. Just to finish off I am able to
> configure the ram such that I can debug the application in ram up to
> the point where relocation occurs so I am fairly confident in my
> SDRAM setup.

If the "random jumping" is your only problem, then you don't really
have a problem.  The behaviour is due to the fact the gcc has
reordered the assembler instructions to better fit the PowerPC
architecture which means that the assembler instruction sequence
_does not_ correspond 1:1 to the source lines.

If this is the problem in your case, you can try disabling all code
optimizations (-O0) for your debugging sessions.  If I am not
mistaken, this should enforce a 1:1 correspondence from source to
assembler instructions.

Cheers
  Detlev

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