x86 assembly tutorial

performance rather than portability or ease of debugging. This document is about x86 assembly language, since the word "assembly language", if not explicitly expressed ia32 on the x86 assembly language. Assembly language is a ki

5.0 Compilation Optimization Overview Optimization is a very important thing. As a program designer, you certainly want your program to be small and fast. Many of the DOS times have mentioned that "a certain compiler can generate very compact code", in other words, the compiler will reduce the code as much as you can if you use the functionality it provides correctly. Currently, the popular C + + compiler on the Intel x86 system, including the Intel

1, in-depth Linux kernel premiseBecause I have learned the x86 assembly language of Intel before, so this article does not tell the basic grammar of the Assembly;Kernel Most of the code is implemented in C and assembly language, to understand the kernel, C language Most people have mastered, the next step is to master

of x86 programming, and delve into the instruction set O Nly in enough detail to get a basic feel for x86 programming. Resources Guide to Using Assembly in Visual Studio-a tutorial on building and debugging Assembly code in Visual Studio Intel

Linux x86 inline assembly-general Linux technology-Linux programming and kernel information. The following is a detailed description. Bharata B. Rao provides a general introduction to using and constructing x86 inline assembly on the Linux platform. He introduced the basic knowledge of inline

C # inline-asm/Embedded x86 assembly, C # Can it be embedded in assembly? In my eyes, C # is impossible as a middle-and upper-layer Language. Why do I think the middle-and upper-layer languages place assembly code? I can see from C # retaining pointers. Many people will not believe that C # can use

Article Title: x86 inline assembly in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. X86 inline assembly in Linux　　Combine all parts　　DeveloperWorks　　Document options　　Send

C # can embed assembler in my eyes C # as a middle-upper language is impossible not toWhy is it that I think of the upper-middle language when I place the assembly code? Keeping pointers from C # can see that I knowThere are a lot of people who won't believe C # can use assembler code but C # will be troublesome C # can not directlyInline assembly (INLINE-ASM) is accurate that C # can only be used (AUTO-ASM

code specified for the ASM segment. the ANSI C specification uses the keyword __asm__ to replace the keyword ASM when using inline assembly statements, because the ANSI C keyword ASM is used for other purposes. as follows: __asm__ ("Addl $, result\n\t" "Subl $, result\n\t");The Basic ASM format provides a simple style for creating assembly code, but there are some limitations. First, all input an

Program loading and Execution (vi)--"x86 assembly language: From the actual mode to the protection mode" Reading notes 26What can I learn from this article? Glossary of conditions for NASM When compiling with NASM, define macros with command-line options Conditional statements for Makefile overriding variable values in makefile on the Make command line The 13th chapter exercises the

start with compilation. When I was reading Yu Yuan's book, I came up with a question: "What is the real assembly language ?!" I think it should be defined as follows: assembly language is a command language that directly operates the CPU without relying on any operating system. On the other hand, there is almost no compilation language book that can be used in the operating system. The book I see has the l

Loading and running of the program (v)--"x86 assembly language: From the actual mode to the protection mode" Reading notes 25Some of the previous posts ended up parsing the code. This article is about compiling, running, and debugging the code.1. Compiling the code and writing the image fileWe both compile and write on the command line before we enter the command. When the source file is not considered trou

write online assembly in VC, try not to touch the segment register! The first reason for this conclusion is that the DS, es, and SS of VC-generated applications are the same. In other words, the data segment, additional segment, and stack segment of the entire application are in the same address, so you do not need to change them at all. The second reason is that, because of the protection mode, each segment has a size of 4 GB, and all data can be ea

6.828 of the tools have been installed, before the formal start of the experiment, you need to familiarize yourself with the use of each tool. For me this small white user, need to be familiar with more.1, x86 assembly languageSure enough, the course first made me familiar with assembly language, and provided two references. Although I am familiar with

This part actually has no good notes ... After all, it's the same as the x86 compilation on the textbook.But there's a need to pay attention. x86 compilation has two forms of writing: Intel format and T format (Csapp Page200)Intel format: is common in documentation for Microsoft and Intel. In addition, Chinese textbooks also use this formatThat's what Format:csapp is used for. In addition, GCC, objdump and

for a code snippet. What is the purpose of this?In protected mode, the code snippet is not writable, so-called non-writable does not mean that the physical nature of the memory changed, so that the memory is not written, but that the code snippet descriptor access to the corresponding memory area, the processor does not allow to write data or change data.However, if you want to modify the code snippet, is there a way? Yes, that is to create a new descriptor for the code snippet, such as a reada

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP. Files\webservice\396619ef\64fa1a2a\assembly\dl3 \d8aa258e\ea6ee7cd_64f0d001\system.data.sqlite.dll "Activation context generation failed. Dependent assembly not found microsoft.vc90.crt,processorarchitecture= "x86", publickeytoken= "1fc8b3b9a1e18e3b", Type= "Win32", version= "9.0.21022.8". Please use S

Currently, many open-source C/C ++ Based on the x86 processor environment, and the assembler included in the objective-C/C ++ compiler uses the att format. Att assembly differs from other processors (such as arm and Blackfin) in x86 instruction sets. It is significantly different from Intel's custom Assembly format. Th

, we write our own library is static link, and the system's library generally use dynamic link. Dynamic linking does not link the function code to the executable program, and the dynamic link library is called by the operating system when the program starts. On Linux systems, the standard C dynamic library is located in the libc.so.x file, where x values represent the version of the library. In order to link the libc.so file, you must use the-l parameter of the GNU connector, which is linked in

Preliminary study on 2.1 x86 system structure Preliminary study on computer system of 2.1.1 80x86 The word cell address is represented by its low address. Byte and byte access is the minimum mode of memory access, the basic unit of access. For x86, because it takes a small-end storage mode, the Word cell address is represented by its low-level address. 2.2.1 80x86 processor and protection mode preli