Bug in lea? Concerning conversion to dword or byte

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keenin

Joined: 25 Aug 2003
Posts: 33

keenin 02 Sep 2003, 23:44

Hi,

lea edx,[edi+0x81]
gets 8D97 81000000
also true for higher numbers

lea edx,[edi+0x71]
gets 8D57 71
also true for lower numbers

using FASM 1.49

Isn't it possible to convert 0x81 to a byte, too?

02 Sep 2003, 23:44

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8359
Location: Kraków, Poland

Tomasz Grysztar 03 Sep 2003, 12:53

No, because it's too large, such imm8 is sign-extended, not zero-extended.

03 Sep 2003, 12:53

keenin

Joined: 25 Aug 2003
Posts: 33

keenin 03 Sep 2003, 15:40

Thanks, I forgot that.

03 Sep 2003, 15:40

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