September 2017
Beginner to intermediate
290 pages
6h 58m
English
Content preview from Mastering Assembly Programming
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Binary Arithmetic Instructions
These instructions perform basic arithmetic operations. Operands may be byte, word, double-word or quad-word registers, memory locations, or immediate values. They all modify CPU flags according to the result of operation thereof, which, in turn, lets us change the execution flow depending on the values of certain flags.
Let us take a look at a few basic arithmetic instructions:
- INC: This is short for increment. This instruction adds 1 to the value of its operand. Obviously, the inc instruction, or its counterpart, the dec instruction, may not be used with immediate values. The inc instruction affects certain CPU flags. For example, consider that we take a register (let it be the EAX register for the sake of ...
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