Tag:Instruction set

  • Legend_Lone


    How to install Ubuntu 20.04 on Windows VMWare Practice environment This paper is based onUbuntu 20.04Platform experiments, the solutions in the following are based on this premise Problem record Question one Example program in Chapter 4 of assembly language programmingcpuid2.sIn the process of compiling and running, there are the following problems: $ as -o cpuid2.o […]

  • Understanding user state and kernel state from root


    Welcome to the operating system series, using graphic + vernacular form to explain, so that Xiaobai can also understand, help you get started quickly. This article begins to explore the user state and kernel state. Although we don’t ask this question in general interview, it is very meaningful for us to understand the whole computer […]

  • Differences between x86, AMD64, x86-64 and x64


    Encyclopedias AMD64, or “x64,”,Is a 64 bit computer processor architecture.It isBased on the existing 32-bit x86 architecture, developed by AMD, applicationAMD64Instruction setOur own products are Athlon(Velociraptor) 64、Athlon 64 FX、Athlon 64 X2、Turion(Turion ) 64、Opteron(Opteron )、Sempron(Flashing Dragon)、Phenom(Phenom )And the latest phenom II and Athlon II processors.   Amd ultra micro semiconductor company American AMDsemiconductorThe company specializes incomputer、signal […]

  • Wasm runtime performance test


    Last article shared wasmer runtime, compiled openssl.wasm File can run independently, this article share openssl.wasm Performance comparison between OpenSSL and native OpenSSL. Test hardware Host MacBook Pro CPU 6-core Intel Core i7 2.2 GHz / start hyper threading Memory 16GB Disk SSD testing software Openssl LibreSSL 2.8.3 OpenSSL wasm OpenSSL package version OpenSSL 1.1.1d WASMER […]

  • Common instructions of nginx


    Recently, nginx is often used, so I want to take a look at the common instructions of the system HttpCore instruction set server_name Meaning: set the name of the virtual server, the first name will become the name of the main server; the server name can use * instead of the first or last part […]

  • Undefined symbols for architecture arm64:


    Undefined symbols for architecture arm64:   “_Decoder_Interface_init”, referenced from:       EM_DecodeAMRFileToWAVEFile(char const*, char const*) in amrFileCodec.o   “_Decoder_Interface_Decode”, referenced from:       EM_DecodeAMRFileToWAVEFile(char const*, char const*) in amrFileCodec.o   “_Decoder_Interface_exit”, referenced from:       EM_DecodeAMRFileToWAVEFile(char const*, char const*) in amrFileCodec.o   “_Encoder_Interface_init”, referenced from:       EM_EncodeWAVEFileToAMRFile(char const*, char const*, […]

  • This e-book is the only way to break down the Java virtual machine


    I collated advanced Java materials free of charge, covering Java, redis, mongodb, mysql, zookeeper, spring cloud, Dubbo high concurrency distributed course, a total of 30g, you need to get it yourself.Portal:https://mp.weixin.qq.com/s/osB-BOl6W-ZLTSttTkqMPQ preface The charm of computer art lies in its preciseness and complexity. Whether it is a stock exchange or a chess game, all the […]

  • Upgrade xcode12 encountered no architectures to compile for (only_ ACTIVE_ ARCH=YES


    Today, after upgrading Xcode, the simulator reported an error, This is because the emulator lacks x86_ 64 instruction set, we need to modify valid in Xcode targets_ Arch, add the instruction set you are missing, as shown in the figure: You need to add x86 after debug_ 64, after running again

  • The first and most comprehensive overview of mongodb 3.6


    Mongodb 3.6 take a look at part 1 The exciting moment finally came. After a mongodb listing day, mongodb finally released mongodb 3.6 RC3. It took the whole day to read release notes, and tried most of the features, and there were also pits. Interested partners can see it first. https://docs.mongodb.com/master/release-notes/3.6/ Today’s article, will bring […]

  • Do arm linux cross compilation once


    Cross compilation Why cross compile In fact, cross compilation is relative to native build. I believe that when you first learn C / C + + languages, you write programs on the computer, then compile and generate executable files on the computer, and finally run them on the computer. The whole process of editing, compiling […]

  • VIM enables programming small operation 6 to fly


    VIM is a powerful editor. Students who have done Linux C development should be very familiar with it. Java developers often use VIM to modify and deploy configuration files in Linux. In this paper, the common operations in VIM are sorted out for your reference Enter VIM 1. Linux command line / git bash command […]

  • Processor architecture


    In the front, we mainly studied the machine level representation of programs, the representation and processing of information, and talked about the organization of assembly instructions and data, partial to the software part. After that, it mainly studies processor architecture, memory hierarchy, link, exception, virtual memory, program optimization and other parts, partial hardware part. Processor […]