LEA instruction not working as expected

Thread Starter

alank2

Joined Jul 14, 2009
26
Hi Everyone,

I'm debugging some code and am having a problem with the way the lea instruction executes like this:

lea edi,[esi+10h]

What happens is that esi is a valid location in the 0x02000000 range and sometimes this instruction assigns edi --> 0x02000010, but sometimes it comes back with a totally different value such as 0x00000011.

Can anyone explain what other factors go into this calculation beyond esi and a static 10h? When it works and when it fails the segment registers seem the same...

Thanks,

Alan
 
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