arm64

问题 Going thru the ARMv8 manual, I have the following questions to help understand the big picture. Can legacy 32 bit app. (ARMv7 or earlier) run as is on the ARMv8 OS? If the legacy applications need to be rebuilt for ARMv8 and assuming that I rebuild the application as 32 bit (Aarch32), does this need 32 bit OS underlying support? (It is interesting to know how the addressing mechanism works here.) Please provide references wherever possible. PS: I am targeting Linux OS with Aarch64 support (3

问题 Going thru the ARMv8 manual, I have the following questions to help understand the big picture. Can legacy 32 bit app. (ARMv7 or earlier) run as is on the ARMv8 OS? If the legacy applications need to be rebuilt for ARMv8 and assuming that I rebuild the application as 32 bit (Aarch32), does this need 32 bit OS underlying support? (It is interesting to know how the addressing mechanism works here.) Please provide references wherever possible. PS: I am targeting Linux OS with Aarch64 support (3

问题 If you have built an app for iOS(armv7, arm64) recently using these softwares, care to share: what versions of unity, vuforia, xcode you used. 回答1: Note: This answer is based on the information from the questions comments. iOS 64-bit requirement Since Feb 1, 2015 Apple forces iOS developers to supply a 64-bit binary when submitting new apps to the App Store. Source: https://developer.apple.com/news/?id=01192015a For app updates this got relevant on June 1, 2015. Source: https://developer

问题 If you have built an app for iOS(armv7, arm64) recently using these softwares, care to share: what versions of unity, vuforia, xcode you used. 回答1: Note: This answer is based on the information from the questions comments. iOS 64-bit requirement Since Feb 1, 2015 Apple forces iOS developers to supply a 64-bit binary when submitting new apps to the App Store. Source: https://developer.apple.com/news/?id=01192015a For app updates this got relevant on June 1, 2015. Source: https://developer

问题 I'm trying to build a C library (GMP 6.0.0) for arm64 for use on iOS. I'm running the configure script with the invocation below (compiler is as found using xcrun --find). ./configure \ CC="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" \ CPP="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -E" \ CPPFLAGS="-target arm64-apple-darwin -isysroot /Applications/Xcode.app/Contents/Developer/Platforms

问题 I'm trying to compile a Android Kernel from source and I believe I have downloaded all the right packages to do it but for some reason I get this error ---> arm-linux-androideabi-gcc: error: unrecognized command line option '-mgeneral-regs-only' /home/livlogik/android/kernel/H901BK_L_Kernel/./Kbuild:35: recipe for target 'kernel/bounds.s' failed make[1]: *** [kernel/bounds.s] Error 1 Makefile:858: recipe for target 'prepare0' failed make: *** [prepare0] Error 2 I have the latest NDK and I'm

问题 The aarch64 architecture doesn't have instructions for multiple store and load, i.e. there are no equivalents of stm and ldm from armv7 arch. Instead you must use the stp and ldp instructions for store and loading pairs of registers. Accroding to the ARM reference manual: http://www.element14.com/community/servlet/JiveServlet/previewBody/41836-102-1-229511/ARM.Reference_Manual.pdf There are no multiple register LDM, STM, PUSH and POP instructions, but load-store of a non-> contiguous pair of

问题 I'm using Xcode Version 7.2 (7C68). I met a problem after I build DTCoreText project as framework. DTCoreText.framework works fine on ios simulator, but when i want to test it on device, the following problem showed up: I've checked the build settings in the latest DTCoreText-1.6.17 project: Target: DTCoreText (iOS) ARCHS: armv7, arm64 ONLY_ACTIVE_ARCH: NO VALID_ARCHS: arm64, armv7, armv7s I think these settings are OK. Than I "Build for Profiling" by pressing Shift+CMD+i. Build using

问题 I have updated my Xcode to version 5.1 recently. After update, it runs fine with all simulators except iOS 7.1, in which it gives a mach-O link error. Moreover, there is only a 64-bit architecture option in 'Build setting' tab. According to me, it is the cause of all the problems & errors. Does anybody know reason for this & how to solve it? Here are some warnings & errors I've got: Warning : Values of type 'NSInteger' should not be used as format arguments; add an explicit cast to 'long'

问题 From android developer website, https://developer.android.com/distribute/best-practices/develop/64-bit it is clear that starting August 1, 2019, apps published on Google Play will need to support 64-bit architectures. Our current app has native libraries for armeabi-v7a, arm64-v8a, x86 ABIs but no x86-64. This is because one of the cordova plugins we are using doesn't provide X86-64 support. Will playstore reject the app update or pass it considering there is arm64-v8a support or we will have