arithmetic operation

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Add instruction ADD

function

Sum the destination operand and the source operand , The final operation result is stored in the destination operand .

usage

add Instructions are equivalent to high-level languages +=

add a,b  ==>  a += b

Code implementation

Incremental instruction INC

function

The destination operand is +1 operation .

Code implementation

Subtraction instructions SUB

function

Subtract the destination operand from the source operand , The final operation result is stored in the destination operand .

usage

sub Instructions are equivalent to high-level languages -=

sub a,b  ==>  a -= b

Code implementation

Minus instruction DEC

function

The destination operand is -1 operation .

Code implementation