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Index > Compiler Internals > lea - value out of range

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Joined: 14 Feb 2007
Posts: 49
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Code:
lea     ebx, [esp-0xB0000000] ; value out of range    
But in OllyDbg:
Code:
7C90124C 8D9C24 00000050  LEA     EBX, DWORD PTR [ESP+50000000]    

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Post 25 Apr 2007, 21:13
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
this is problem of point of view, not a "real" problem. As i see it, displacement is 32bit signed immediate, and -0xB0000000 doesn't fit into it.

It is something like wanting FASM to assemble "mov eax, 100000005h" to "mov eax, 5h".
Post 25 Apr 2007, 22:54
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Joined: 14 Feb 2007
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I don't see anything useful in it, but if it's not a bug, it's ok, I'll do it this way Smile
Code:
        lea     ebx, [esp+((-0xB0000000)and 0xFFFFFFFF)]    
I just like to do something like this:
Code:
        or      al, 1
        and     al, not 1    
instead of this:
Code:
        or      al, 1
        and     al, 0xFE    
I think it looks more understandable. Smile

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Post 26 Apr 2007, 02:25
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