x86 instructions

test a, b:

• operation AND(a,b)
• result discarded
• SF: most significant bit of result
• ZF: if result 0, then 1

cmp a, b

• ZF: if a == b then 1
• CF: if a < b then 1

je/jz loc

• jump if zf = 1

jb/jnae loc

• jump if CF = 1

jg/jnle loc

• jump if zf = 0 and sf = of

movs(b/w/d):

• move data from ESI to EDI

rep instr:

• repeat instr ECX number of times