arm64

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Use redhat crash utility to get the ftrace log from ramdump

Use redhat crash utility to get the ftrace log from ramdumpI recently used the crash utility of redhat to parse the ftrace log of ramdump.1. Download the crash utility source code from http://lele.redhat.com/andson/2. cd crash; make target = ARM64 (set based on the chip type.If the machine is not connected to the Internet, an error may occur. You can download the gdb-7.6.tar.gz package and put it under the crash directory.3. makeextensions target =

IOS work notes (2), ios work notes

*) imageData{2 if(self.imageData == nil){3 //4 }5 return self.imageData;6 } In this case, the write will be in an endless loop. self. imageData calls the get method of imageData, so you have to write it in the form of a member variable "_ imageData. 2. When there is a large amount of data, you can store the data in the plist file, read the plist file in this way, fixed format, three rows. // A bundle represents a folder, and the mainBundle can be used to access any resource

Analysis of the symbol of iOS crash stack information

can probably see that mach-o can be divided into 3 parts(1) Header(2) Segment(3) Section, the header is followed by a segment, followed by section, and a segment can contain multiple sections.We put the dsym file into a visualizer:650) this.width=650; "Src=" Http://apk-pack-public-test.nos.netease.com/6ff1eacfd12345a78e6fd068cb31ab41.png? ImageView "style=" border:0px;height:210px;width:800px; "alt=" 6ff1eacfd12345a78e6fd068cb31ab41.png?ima "/>The dSYM file contains symbol tables for the ARMV7

Ios:ffmpeg Compiling and using learning

can be manipulated directly using the command line. First install FFmpeg, where the default system is already installed brew, only need to enter on the terminal: Brew Install FFmpeg Wait for the installation to finish.After the installation is complete, try the following command: Ffmpeg-i Input.mp4 Output.avi If the switch is successful, the installation succeeds3. Compiling FFmpeg library libraries that can be used under iOSThis step is to compile 1 of the said libr

Android Studio specifies so library files that reference Jnilibs specific CPU architectures

A slightly larger project will use a third-party library, so there will inevitably be a different CPU architecture for the phone. So library files ' x86 ', ' x86_64 ', ' MIPS ', ' Mips64 ' Armeabi ', ' armeabi-v7a ', ' arm64-v8a ' But not all third-party libraries will adapt to all the CPU architecture, I have to test the use of a reduced performance and reduce the library file is only used armeabi-v7a library; armeabi-v7a The other is deleted, no arm

IOS Packaging Static Library detailed introduction _ios

dynamically loaded into memory by the system for program invocation. And the system is only loaded once, multiple programs shared, saving memory. When a dynamic library is used by a program 4. IOS Device CPU Architecture Simulator:4s-5: i3865s-7 plus:x86_64 Real machine (iOS device):Armv6:iphone, iphone 2, iphone 3G, ipod touch (first generation), ipod touch (second generation)Armv7:iphone 3Gs, iphone 4, iphone 4s, ipad, ipad 2Armv7s:iphone 5, IPhone 5c (Static library can run on armv7s a

Java.lang.unsatisfiedlinkerror:dalvik.system.pathclassloader[dexpathlist[[zip file "/data/app/com

java.lang.unsatisfiedlinkerror:dalvik.system.pathclassloader[dexpathlist[[zip File "/data/app/com.cj.qv-2/ base.apk "],nativelibrarydirectories=[/data/app/com.cj.qv-2/lib/arm64,/system/fake-libs64,/data/app/com.cj.qv-2 /BASE.APK!/LIB/ARM64-V8A,/system/lib64,/vendor/lib64,/system/vendor/lib64,/product/lib64]]] couldn ' t find ' Libdfs.so " This problem has been bothering me all morning, but I can't find it."

Java.lang.unsatisfiedlinkerror:dalvik.system.pathclassloader[dexpathlist[[zip file "/data/app/Project package name

,/vendor/lib,/system/lib]]] couldn ' t find "libhdtk_socket.so" second method: 1.jar packages and so files are placed in the Libs directory. 2. Add the following code in the Build.gradle file android{sourcesets {main {jnilibs.srcdirs = [' Libs ']}}} If not, see if the Build.gradle file exists NDK NDK supported so library architecture, if the following code is the android {ndk {//Set supported so library architecture Abifil Ters ' Armeabi ', ' x86 ', ' armeabi-v7a ', ' x86_64 ', '

IOS compiles an error: Objc-class-ref in APPDELEGATE.O solution __ios

compiled with 64-bit compilers. Originally in the Xcode6.0 when the default architectures only (arm7,armv7s), to 6.1.1 default to take the arm64 parameters. 1.1. Select Targets->build settings->architectures. Change the build active architectures to NO. 2. Delete the arm64 parameters in the valid architectures below. Or: Double-click Architectures, select Other, delete $ (arch_standard), and then add ARM

Experience of iOS7.1 compiling error-solving scheme

exit code 1 (use-v to the invocation) One of the new features of the Xcode upgrade to 5.1 is that all apps are compiled by the 64-bit compiler by default. Originally in the xcode5.0.x when the default standard architectures only (arm7,armv7s), to 5.1 after the default to take the arm64 parameters. The current temporary solution is 1.1. Select Targets->build settings->architectures. Change the build active architectures to NO. 2. Delete the

Arm and x86 comparison

. And on the mobile side? Then it's arm. ARM is all called Advanced RISC Machine, that is, advanced streamlined instruction set machine. Arm is one of the representative works of RISC microprocessor, which is widely used in the design of embedded system. And the biggest feature of ARM processor is energy-saving, which is one of the reasons for its no enemy in the field of mobile communications. Create a ARM64 bit serverIn the past, arm focused on the

ARM WFI and WFE directives

will clear it and execute it (not standby) If event Register is 0, similar to WFI, enter Low-power standby state until WFE Wakeup events occur. The WFI wakeup event and Wfe Wakeup event can be used to wake the core from WFI and WFE respectively, and these two types of event are mostly the same, such as any IRQ interrupt, Fiq interrupt, and so on, with some subtle differences that can be referred to as "Ddi0487a_d_ Description of Armv8_arm.pdf ". The biggest difference is that the WFE can be awa

Python subprocess.getoutput function

devices = Subprocess.getoutput ('ios-deploy-c')print(Devices)In the code above, the Subprocess.getoutput function obtains the results of the shell Terminal command execution in Linux, saves it in string format to devices;subprocess and other functions, interacts with the shell terminal, and uses it later to add, The output is as follows['[...] Waiting up to 5 seconds for IOS device to be connected'"[....] Found 26b58f4034c7cabd1b34a7fbb8exxxxxxx (N71map, IPhone 6s, Iphoneos,

Linux Kernel 4.2 officially released

Crucial m500s to blacklistIyappan Subramanian (1):Drivers:net:xgene:fix:Oops in Linkwatch_fire_eventJ. Bruce Fields (1):Nfsd:add Jeff Layton as Co-maintainerJaedon Shin (1):Net:bcmgenet:fix uncleaned DMA FlagsJan Beulich (1):Lsm:restore Certain default error codesJavi Merino (1):Thermal:power_allocator:allocate with Kcalloc, what do you have with KfreeJeff Moyer (1):Mtip32x:fix regression introduced by BLK-MQ PER-HCTX FlushJurgen Kramer (1):ALSA:USB:ADD native DSD support for Gustard dac-x20uKa

Unity3d C # httpwebrequest asynchronous download file

Recently has been the company's game to support ARM64, there are a lot of bugs or unity currently does not support the operation of the problem, these two days encountered asynchronous HttpWebRequest not support the problem, because there has been no contact, so also took the opportunity to learn about the use of the next.Here's an example of using HttpWebRequest to download a zip file asynchronously.Using unityengine;using system.collections;using sy

Raspberry PI 3B + Debian 9 aarch64 + ROS Lunar

After using Rspberry pi, learn about Ros as an open-source robotic operating system.The earliest use of raspberry Pi 2B +raspbian Jessie successfully installed with the source of Ros Indigo, and then change the RaspberryPi3, try again on how unsuccessful.Later, no matter, looking for a transplant raspberrypi 3B Debian 9 arm64 method, successfully run a 64-bit system.Because it is Debian 9 (stretch), Ros supports only lunar, so it is installed using th

IOS Crash log backtrace symbol

fact, as long as there is the original app file, you can find this information. Method: Put the corresponding version of the Myapp.app file and the crash file under the same folder, note that the correct version of the app must be applied, because each time the package, the mapping of the symbol table may be different, if the wrong should not be symbolic. And then run Atos-arch armv7-o myapp.app/myapp-l 0x9b000 0x004fe736 This method-arch later refers to the hardware architecture:iphone 1,2,3 i

Detailed analysis of Android virtual machine ART Run-time Library

speeds up to 10x. At the same time, art's garbage collection algorithm has also been improved to enhance the user experience, to avoid the application of the cotton. These algorithms are still being developed within Google. Recently, Google has only introduced a new algorithm, "moving garbage Collector". The core idea is that when the application runs in the background, the heap space of the program is merged into pieces. 3 64-bit support Art was designed with the full consideration of the p

NVIDIA Jetson TX1 u-boot compilation and Burn Write

./flash.sh-k EBT jetson-tx1 Mmcblk0p1 After burning, Target restarts: Finish. 4. problems encountered in compiling: 1), Prompt Error:bad value (armv8-a) for-march=switch The reason is that there is no arm64 and should be set to Arch=arm 2), tips missing compiler-gcc6.h This latest file is required because of the gcc6.3 version of the compiler. Download it online and put it in the ~/u-boot/include/linux/. 3), hint that the DTC version is too o

Open the "earlyprink" parameter in CmdLine

/shx3_defconfig:config_cmdline= "console=ttysc0,115200 Earlyprintk=bios ignore_loglevel" /************************************ Full Search EARLYPRINTK view its invocation procedure ***************************************/ Full Search EARLYPRINTK view its invocation procedure ① in Kernel-parameters.txt The following description, see our correspondence which, earlyprintk= [X86,sh,blackfin,arm] Earlyprintk=vga Earlyprintk=xen Earlyprintk=serial[,ttysn[,baudrate]] earlyprintk=serial[

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