nasm/ Entry 386 question

[lly99]

 :dazzled:

Entry 386:

Hello       EveryBody

xor   eax, eax
   mov   ax, cs
   shl   eax, 4
   add   eax, LABEL_SEG_CODE32
   mov   word [LABEL_DESC_CODE32 + 2], ax
   shr   eax, 16
   mov   byte [LABEL_DESC_CODE32 + 4], al
   mov   byte [LABEL_DESC_CODE32 + 7], ah


shl   eax, 4 ;(???????????  why?)
thanks

[jj2007]

xor   eax, eax       ; eax=0
mov   ax, cs         ; eax=cs
shl   eax, 4          ; eax=cs*16

[lly99]

Thank you very much!!!!  :bg

:U

[Ian_B]

xor   eax, eax
mov   ax, cs

If you are using this code yourself, this might be a simpler replacement:

movzx eax, cs


Regards.

[lly99]

xor   eax, eax
mov   ax, cs

If you are using this code yourself, this might be a simpler replacement:

movzx eax, cs


Regards.

Yes        movzx eax, cs   ; zero fill :clap: