IamAlasca的专栏

Name Length(bits)      Use/comments EAX 32                       accumulator, general use;                                                         low-order-word AX, divided into bytes AH and AL

首先我们来看几条比较熟悉的指令。 and    destination, source（实现某位置0） or   destination, source（实现某位置1） xor   destination, source(某位跟1异或取反，跟0异或是自身，本身异或为清0，如xor ax, ax) not   destination（取反） 1.The results

Five 80x86 instructions are designed for string manipulation:movs, cmps, scas, stos, and lods. A string in the 80x86 architecture refers to a contiguous collections of bytes, words, doublewords in me

pushad: 将所有的32位通用寄存器压入堆栈 pusha:将所有的16位通用寄存器压入堆栈 pushfd:然后将32位标志寄存器EFLAGS压入堆栈 pushf:将的16位标志寄存器EFLAGS压入堆栈 popad:将所有的32位通用寄存器取出堆栈 popa:将所有的16位通用寄存器取出堆栈 popfd:将32位标志寄存器EFLAGS取出堆栈 popf

4—1Copying Data movs   destination, source 1.Each mov instruction has the form and copies a byte, word, doubleword value from the source operand location to the destination operand location. 2.No m