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Index > Compiler Internals > 1.70.01 fails on lea ecx,[$3fff+64-$3fff-(not 30 + 32)]

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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17450
Location: In your JS exploiting you and your system
revolution
It makes me wince to see this effect:
Code:
use16
x = not 0
lea ecx,[eax+not 0]   ;lea ecx,[eax+0xFFFF]
lea ecx,[eax+x]                ;lea ecx,[eax+0xFFFFFFFF]    
Post 06 Jul 2012, 12:55
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Tomasz Grysztar



Joined: 16 Jun 2003
Posts: 7750
Location: Kraków, Poland
Tomasz Grysztar
As the default context for address here is 16-bit, you get the result as if you defined x this way:
Code:
x = word not 0    

It is pretty straightforward, even if unexpected (at least until you know how it works).
Post 06 Jul 2012, 13:05
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