Questions tagged [arm64]
64-bit ARM architecture, also known as AArch64.
arm64
1,992
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Xcode building for iOS Simulator, but linking in an object file built for iOS, for architecture 'arm64'
I am trying to get a large (and working on Xcode 11!) project building in Xcode 12 (beta 5) to prepare for iOS 14. The codebase was previously in Objective-C, but now it contains both Objective-C and ...
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What is difference between arm64 and armhf?
Raspberry Pi Type 3 has 64-bit CPU, but its architecture is not arm64 but armhf.
What is the difference between arm64 and armhf?
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232
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5
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Differences between arm64 and aarch64
I have two "unlocked" devices, an iPad mini 3, and a Galaxy Edge 6, both endowed with a terminal and a minimalistic set of unix commands. I thought both devices have arm64 processors but when I ran
...
- 3,527
91
votes
12
answers
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iOS app submission : missing 64-bit support
I sent an app yesterday for review, with no problem. I then realized that I had a very little fix to do (changing the max zoom level of a map from 19 to 18, nothing else), so I removed the binary from ...
- 6,102
85
votes
3
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Xcode arm64 Vs arm64e
Xcode 10.1 mention Support for arm64e (Preview). Anyone have any idea about arm64e. Any difference between arm64 and arm64e.
https://developer.apple.com/documentation/xcode_release_notes/...
- 2,896
73
votes
4
answers
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CocoaPods arm64 issue
When using Podfile for developing iOS 7 app with Xcode5, we always got this issue.
After some searching, seems like no final resolve from CocoaPods ? Maybe resolved at this moment when you see this....
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50
votes
2
answers
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Unknown host CPU architecture: arm64 , Android NDK SiliconM1 Apple MacBook Pro
I've got a project that is working fine in windows os but when I switched my laptop and opened an existing project in MacBook Pro M1. I'm unable to run an existing android project in MacBook pro M1. ...
- 5,849
46
votes
2
answers
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How does clang generate non-looping code for sum of squares?
I admit the answer to this may be 'some very specific magic', but I'm kind of shocked by what I've observed here. I was wondering if anyone had insight to how these types of optimizations work. I find ...
- 1,170
32
votes
6
answers
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How to set Architecture for docker build to arm64?
I have a Dockerfile that I run on amd64 but want to run on arm64. Since go build tool takes GOARCH=arm64 as argument I don't need any other cross compilation tool to make the binary.
# Run the build
...
- 3,289
28
votes
3
answers
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NSInteger and NSUInteger in a mixed 64bit / 32bit environment
I have a fair amount of string format specifiers in NSLog / NSAssert etc. calls which use %d and %u with NSInteger (= int on 32bit) and NSUInteger (= unsigned int on 32bit) types respectively.
When ...
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What are the semantics of ADRP and ADRL instructions in ARM assembly?
ADRP
Address of 4KB page at a PC-relative offset.
ADRL
Load a PC-relative address into a register. It is similar to the ADR
instruction. ADRL can load a wider range of addresses than ADR ...
- 2,557
23
votes
4
answers
18k
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Why the Missing 64-bit support happened when upload to the iTunes connect?
I try to upload the file via Application Loader. But I got the mail from iTunes store.
Missing 64-bit support - Beginning on February 1, 2015 new iOS apps submitted to the App Store must include 64-...
- 2,853
23
votes
3
answers
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views
Are armv8 and arm64 the same?
In xcode which is the developement environment for iOS. When creating
a new project. Build settings states that it supports armv7, armv7s
and arm64 architectures.
The following chart shows apple ...
- 24.1k
22
votes
3
answers
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How to determine host value for configure when using cross compiler
General question: If I use a cross compiler, how can I tell the value of the "--host" option I should give when I run configure?
Specific: I'm using cross compiler for arm64 arch. What is the correct ...
- 15.5k
22
votes
3
answers
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Which Android Virtual Device should be used to launch arm64-v8a APK on Windows?
I have a common APK app that utilizes 'arm64-v8a' 'armeabi-v7a' ABIs. How should I tune an Android Virtual Device to be able to launch this app?
I tried different combinations but it still does not ...
- 433
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3
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How to replace the bundled Dart SDK in Flutter to run natively on Apple Silicon (ARM64)?
Dart SDK officially supports ARM64 and as of now, 2.14.2 is the latest (stable) Dart SDK that has support for ARM64. Though it was the same version that was bundled in my Flutter setup, it seemed to ...
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4
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How to update our static library architecture for suporting arm64 Build?
Few days ago i create static-library (Universal) that work's fine with Xcode5.0 SDK7. After Update Xcode5.1 with SDK7.1 that not work if i select simulator iPhone Retina(4-inch 64-bit). Then i am ...
- 49.6k
19
votes
2
answers
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Docker exec /bin/sh: exec format error on Arm64
My Dockerfile works on x86 machine, but fails on the machine with arm64 architecture; specifically on a1.2xlarge (an aws EC2-instance).
Error on running docker compose up -d
#0 0.462 exec /bin/sh: ...
- 1,014
19
votes
11
answers
7k
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Parse API 1.6.4 - cannot build project
I downloaded the new iOS Parse API (1.6.4) and tried to build my project. When I do, I get this error:
Undefined symbols for architecture arm64" "_BFTaskMultipleExceptionsException", referenced from:
...
- 1,266
19
votes
1
answer
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Is it possible for other x86-64 emulators on M1 to leverage the same optimizations used by Rosetta 2?
I am curious about the vastly different performance characteristics of running x86-64 binaries on the Apple M1 platform using Rosetta 2 vs. emulation, for example what Docker Desktop currently does ...
- 1,809
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2
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mach-o file, but is an incompatible architecture have 'x86_64', need 'arm64e' M1 MAC
from PyQt6.QtWidgets import *
from model.Department import Department
from view.main_window import Ui_Form
from model.Department import Department, Employee
class Homewidget(QWidget,Ui_Form):
...
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18
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2
answers
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gcc; arm64; aarch64; unrecognized command line option '-mfpu=neon'
I got compilation error:
unrecognized command line option '-mfpu=neon'*
when tried to compile with -mfpu=neon flag.
Actually, any 'mfpu' options I tried failed. However in documentation this ...
- 1,929
17
votes
1
answer
14k
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QEMU "-bios" vs. "-kernel" vs. "-device loader,file=..."
For background, I'm running bare-metal QEMU-4.1.0 on aarch64.
There are several ways to get QEMU to load compiled code into memory. I'd like to understand what the underlying differences are, because ...
- 1,024
17
votes
2
answers
2k
views
Forcing 64-bit long doubles?
I'm building musl-libc statically for a project on an aarch64 (ARM 64-bit) platform. I'd like to avoid any soft floating point libraries such as GCC's soft float library routines. However, these are ...
- 1,365
15
votes
4
answers
3k
views
-[NSInvocation getReturnValue:] with double value produces 0 unexpectedly
I am trying to call a method that returns a double using NSInvocation. But I found that it does not working in 64 bit iOS apps. It works on on OS X, in the simulator -- both 32-bit and 64 bit -- iPad ...
- 46.2k
15
votes
3
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Does an Android Studio Linux arm64 version exist?
Does an Android Studio Linux arm64 version exist?
I think now is a good time to support it since the new Mac M1 machine is arm64 and some work is being done to run Linux on top of it.
Also I am ...
- 3,721
14
votes
3
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ARM64: LDXR/STXR vs LDAXR/STLXR
On iOS, there are two similar functions, OSAtomicAdd32 and OSAtomicAdd32Barrier. I'm wondering when you would need the Barrier variant.
Disassembled, they are:
_OSAtomicAdd32:
ldxr w8, [x1]
add ...
- 6,409
14
votes
1
answer
11k
views
Does AArch64 support unaligned access?
Does AArch64 support unaligned access natively? I am asking because currently ocamlopt assumes "no".
- 3,595
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2
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Is there an API to detect CPU features on iOS?
I have some cryptography code that has multiple implementations, selecting which implementation at runtime based on the features of the CPU it is running on. Porting this has been straightforward so ...
- 3,562
13
votes
10
answers
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duplicate symbols for architecture arm64 after Xcode 8.0 update
I get duplicate symbols error after I updated my Xcode. (find the code down) Does anybody get this too? And how could be solved?
I tried to remove -ObjC linker flag from the "Other Linker Flags" ...
13
votes
3
answers
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Do we need to compile iOS App for both "armv7" and "arm64" if my deployment target is 8.0?
My App supports from iOS8.0 and above. And I know that from iOS7 onwards its arm64 bit architecture. In that case do we need to compile the binary for both "armv7" and "arm64" slices?
If I compile ...
- 4,300
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Performance of unaligned SIMD load/store on aarch64
An older answer indicates that aarch64 supports unaligned reads/writes and has a mention about performance cost, but it's unclear if the answer covers only the ALU or SIMD (128-bit register) ...
- 7,966
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asm("trap") on 64-bit iOS devices
In my homegrown assert macro, I've been using asm("trap") on iOS devices (or asm("int3") on iOS simulators) to break in the debugger. However, in 64-bit builds for devices, I get an "unrecognized ...
- 1,013
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votes
4
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Why does integer division by -1 (negative one) result in FPE?
I have an assignment of expaining some seemingly strange behaviors of C code (running on x86). I can easily complete everything else but this one has really confused me.
Code snippet 1 outputs -...
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votes
1
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Is there performance advantage to ARM64
Recently 64-bit ARM mobiles started appearing. But is there any practical advantage to building an application 64-bit? Specifically considering application that does not have much use for the ...
- 75k
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votes
2
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Consequence of violating macOS's ARM64 calling convention
I'm porting some AArch64/ARM64/Apple Silicon assembly code from Linux to macOS.
This code uses all 31 available registers (stack pointer doesn't count) to avoid almost all cases of spilling; the Linux ...
- 2,568
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votes
9
answers
5k
views
Packaging error when switching to arm64 (arm5 was OK)
I just plugged in a new iPhone 6, created a provisioning profile and then I launched the app I'm developing on the device. It compiled fine, but at linking stage it errored out with:
...
- 5,187
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votes
7
answers
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Compile boost as universal library (Intel and Apple Silicon architectures)
I am trying to build boost library as dylib on MacOS. I need to build it for both the Intel architecture and the upcoming Apple Silicon (arm64) architecture.
I downloaded boost and ran the following ...
- 2,703
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votes
1
answer
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views
SIMD-within-a-register version of min/max
Suppose I have two uint16_t[4] arrays, a and b. Each integer in these arrays is in the range [0, 16383], so bits 14 and 15 aren't set. Then I have some code to find the minimum and maximum among a[i] ...
- 2,568
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Android emulator supporting ARMv8
I need to create an Android virtual device supporting ARMv8 system image on aarch32 and aarch64 both. Does Android Studio emulator support ARMv8 system image in its AVD manager? Or is there any other ...
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votes
6
answers
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Symbol(s) not found for architecture arm64 - XCode
I'm trying to build my react native project on a Mac Intel, but keep getting the next error:
Showing All Messages
Undefined symbol: _swift_stdlib_isStackAllocationSafe
Undefined symbols for ...
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votes
1
answer
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Docker - No matching manifest for linux/arm64/v8 in the manifest list entries - Ubuntu 22.04/arm64/v8
I have installed Docker and docker compose and tested it and i got the “Hello World” message, so everything works fine
After that i tried to install a Node.js backend, but idk why i keep getting this ...
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votes
1
answer
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What does the exclamation mark mean in the end of an A64 instruction?
The documentation for LDP and STP gives an example instruction with an exclamation mark in the end:
LDP X8, X2, [X0, #0x10]!
Also the documentation about porting A32 PUSH/POP instructions into A64 ...
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1
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Building ffmpeg iOS libraries for armv7, armv7s, arm64, i386 and universal
I have seen several scripts to build FFmpeg API for armv7, 7s and i386 but couldn't find anything which would work for armv64 as well. Some of the answers on other threads of this forum suggested to ...
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How to debug an aarch64 translation fault?
I am writing a simple kernel in armv8 (aarch64).
MMU config:
48 VA bits (T1SZ=64-48=16)
4K page size
All physical RAM flat mapped into kernel virtual memory (on TTBR1_EL1)
(MMU is active with ...
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How to compile C++ program on Windows for ARM using LLVM?
Aim Compile a C++ program on Windows for ARM using only LLVM.
Why LLVM because of permissive licensing.
I'm starting to wonder if my understanding of LLVM is correct.
On the host machine do
Use ...
- 3,059
10
votes
2
answers
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views
When debugging, GoLand can not evaluate a function on M1
When debugging, use the Evaluate expression and try to evaluate a function. The result is shown as: "backend does not support function calls". Why?
MacBook Pro M1
GoLand 2021.1.3
Go 1.16.5 ...
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10
votes
2
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.NET Core 3.0 Publish for ARM64
Does anyone know how to publish a .NET Core 3.0 application for ARM64?
I can only select "linux-arm" but no "linux-arm64".
Setting linux-arm in combination with x64 also doesnt work. It says the ...
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2
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Obtaining remainder using single aarch64 instruction?
I am writing some assembly code for ARM8 (aarch64). I want to do a division and use the remainder obtained for further calculations. In x86 when I use
'div', and I know my remainder is kept in RDX. ...
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4
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gcc-7: error: unrecognized command line option ‘-m64’
I'm trying to compile C code on a Jetson Nano and I get this error during compiling. I tried removing any occurrence of 'm -64' but it seems like its added automatically. This is the cmd where it ...
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