x86 Instruction Summary
(by Gary M. Zoppetti)
=======================

mov   S, D         D <-- S                     Move
movz  S, D         D <-- ZeroExtend (S)	       Move zero extend
  (takes two suffixes: e.g., movzbl to extend a byte to a long)
movs  S, D         D <-- SignExtend (S)	       Move sign extend
  (takes two suffixes: e.g., movsbl to extend a byte to a long)

push  S            %esp <-- %esp - x           Push
                   M[%esp] <-- S   	       (x is sizeof (S))
pop   D            D <-- M[%esp]               Pop
                   %esp <-- %esp + x	       (x is sizeof (S))
lea   S, D	   D <-- S                     Load effective address

inc   D            D <-- D + 1                 Increment
dec   D            D <-- D - 1                 Decrement
neg   D            D <-- -D                    Negate

add   S, D         D <-- D + S                 Add
sub   S, D         D <-- D - S                 Subtract
imul  S, D         D <-- D * S                 Multiply
idiv  S            %eax <-- %edx:%eax / S      Divide
                   %edx <-- %edx:%eax % S      
cltd               %edx:%eax <-- SignExtend (%eax)  Convert long to quad
                    
not   D            D <-- ~D                    Complement
and   S, D         D <-- D & S                 And
or    S, D         D <-- D | S                 Or
xor   S, D         D <-- D ^ S                 Exclusive-or

shl   k, D         D <-- D << k                Shift left
sar   k, D         D <-- D >> k                Shift right (arithmetic)
shr   k, D         D <-- D >> k                Shift right (logical)

cmp   S, D         Set condition codes         Compare D:S
test  S, D	   Set condition codes	       Compute S & D

(For setx, D is an 8-bit register and the source is a condition code)
setz  D		   D <--  ZF		       Set on zero
setnz D		   D <-- ~ZF		       Set on not zero
setc  D		   D <--  CF		       Set on carry
setnc D		   D <-- ~CF		       Set on no carry
sets  D		   D <--  SF		       Set on signed
setns D	           D <-- ~SF		       Set on not signed
seto  D		   D <--  OF		       Set on overflow
setno D	   	   D <-- ~OF		       Set on no overflow

jmp   label        Jump (unconditional)
jmp   *label       Jump indirect (unconditional)
je    label        Branch on equal
jne   label        Branch on not equal
js    label        Branch on signed (negative)
jns   label        Branch on unsigned (non-negative)
jg    label        Branch on greater
jge   label        Branch on greater or equal
jl    label        Branch on less
jle   label        Branch on less or equal