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Setc instruction
Posted: Tue Sep 20, 2005 11:00 pm
by AdrianLapaj
HELLo
I need some infos about setc assembly instruction, but i can't find anything:( Is anyone has sth about this **** ??
P.S. Sorry for my english.
Re: Setc instruction
Posted: Tue Sep 20, 2005 11:00 pm
by Osbios
SETxx works like Jxx jump. But it dosn't jump, it set a bit.
That what NASM docs say:
Set Register from Condition
SETcc r/m8 ; 0F 90+cc /2 [386]
SETcc sets the given 8-bit operand to zero if its condition is not satisfied, and to 1 if it is.
For example:
Code: Select all
cmp ax,bx
je target;IF ax=bx then JMP to TARGET
target:
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cmp ax,bx
sete byte[target];IF ax=bx then target=1 else target=0
Code: Select all
cmp ax,bx
setne al;IF ax<>bx then al=1 else al=0