mips assembly language

Now in the study of the Assembly, it feels very interesting. , I will write down the learning things, as a later can learn notes ~ The loop instruction is in the form of a loop designator, which takes two steps when the CPU executes the Loop command 1: (CX) = (CX)-1 2: Determine the value in CX, not zero to go to the label to execute, if zero, then execute down From the description above, we can see the results of the execution of the impact loop in

1.1 Machine languageMachine language is the set of machine instructions. What is a machine instruction? is a column of binary data, the computer turns it to high and low level, so that the other devices of the computer drive and operation. (How does the computer use the 2-in language?) ）Early procedures are written in machine language, but there is a problem is t

unconditional transfer commands, JMP, and so on, that can be used to judge the condition of if, for, and while in a high-level language. Some directives that change status flags, such as CMP, are usually used before these instructions.Among them, what can be learned in this experiment is. The student variable is defined in the data segment and contains 100-byte elements. This is the same as the concept of arrays in high-level languages. In fact, reca

The Hello world of assembly language is not as low as I think. It already has many features of advanced languages, Code It also becomes clear, with a clear hierarchy and easy to maintain. A. ASM . 386 . Model flat, stdcallIncludelib kernel32.libIncludelib user32.libMessageboxa proto: DWORD,: DWORDMessageBox equ Messageboxa > Exitprocess proto: DWORD. DataMsgboxcaption DB "Welcome " , 0 Msgbox

How does the computer work?First look at the CPULook, this is the CPU. CPU can only run binary code Just like this.101100000000000000000011000010100000000001100000......Back to the time when the CPU was just bornIt was programmed only with 0 and 1, and it was written dead.......A smart and diligent programmerWrote a 0 and a 1.　　Text editing programsThe so-called text editing program is my keyboard what knocks a M your monitor shows I knocked out M also can save all the letters I knock.With a tex

operand = (BP) *10h+ (BX) + (SI)/di+8 bit (16-bit) displacementform: mov ax,[bx+si+value] or mov ax,value[bx][si] or mov ax,[bx+si]. Value value is the amount of displacementValid address EA =value + (BX) + (SI) Physical address = (DS) *10h+ea2. Convenient to find an element in the two-dimensional table, can make value as the first address of the table, BX represents the row, SI for the column4. Choice of addressing methods1. Immediate addressing for register, storage unit assignment, and immed

Original address: Http://www.cnblogs.com/dennisOne? 8086CPU Transfer Instruction classification Unconditional transfer instructions (e.g., JMP) Conditional Transfer Directives loop instructions (e.g. loop) Process Interrupt ? operator offsetOffset in assembly language is the symbol processed by the assembler, its function is to take the offset address of the label.? jmp directi

First talk about some of your own understanding: from a high-level language of the basic say In high-level languages, we sometimes initialize the property settings for a segment of storage space, such as the initial access to the storage space is int, each time the IP = Ip+4, and now want to access in bytes (char), then you need to force type conversion, but this conversion is only useful for a single operation. int A[10] Char *p = (char*) A; If you n

工欲善其事, its prerequisite. Assembly language is our learning, interface principle, the principle of microcomputer composition, such as the basis of a number of interesting courses. Unfortunately, however, people who have just come into contact with the Assembly always feel that it is difficult, good trouble, a lot, a good abuse of heart, a good brain abuse. So, Beh

Recently, the company needs to complete security testing, resulting in the need for more in-depth study of attack methods and vulnerability analysis of the technology, the total feel a bit like a hacker:), but not only to know some of the security testing tools and tools to use, but also need basic Kung Fu, first from the University of the Assembly language (hehe, university lessons, For a long time did not

Most of the compilations are based on 8086来, and the following are also saidThe working environment of assembly language has many, the following list I know several:First, dosbox+ (Masm.exe+link.exe)/ml.exeThe latter is compiled compiler, run in DOS environment, so need to install DOSBox (DOS Simulator), more say, DOS itself is operating system, different from Windows Cmd,cmd Although the interface is simil

Assembly analysis of high-level language programs In high-level languages, such as C and Pascal, we no longer operate directly on the hardware resources, but rather on the solution of the problem, which is mainly embodied in the abstraction of data and the structure of the program. For example, we use variable names to access data and no longer care where the data is in memory. In this way, the use of hard

Assembly language is a machine-oriented low-level language, which is a symbolic representation of machine language. Therefore, it is higher than the C language and other high-level language, high-speed, efficient features. At the

is not difficult to see that the U command includes three parts to the left of the memory address, followed by the machine code the rightmost machine code corresponding assembly instructions. To execute the command we wrote, we should use the command T to see the value of the current register: The current CS and IP values are: cs=1442 ip=0100 to make the computer perform the 1000:0 command we wrote, we need to change the current CS and IP to cs=1000