aarch64-linux-gnu-gcc -static -o hello64 hello.cīut what happens if we run this Arm executable on a different architecture? Executing it on an x86_64 architecture would normally result in an error telling us that the binary file cannot be executed due to an error in the executable format./hello64īash.
![qemu system arm qemu system arm](https://cjhackerz.net/img/2019-09-26-165748_939x1030_scrot.png)
To compile the code as a static executable, we can use aarch64-linux-gnu-gcc with the -static flag. Return printf("Hello, I'm executing ARM64 instructions!\n") Once installed, create a file containing a simple C program for testing, e.g.
Qemu system arm install#
Let’s start with Arm64 and install the following packages: sudo apt update -y & sudo apt upgrade sudo apt install qemu-user qemu-user-static gcc-aarch64-linux-gnu binutils-aarch64-linux-gnu binutils-aarch64-linux-gnu-dbg build-essential In order to compile our code for the Arm architecture, we need to use a cross-compiler. However the GCC compiler you have on your system compiles your code for the architecture of the system it runs on, in this case x86_64. Since processors don’t understand high-level source code directly, we need to convert our C code into machine-code using a compiler. Once the emulator is running you can check the emulated CPU is an ARM926E-JS Core.FYI: In this tutorial, I’m using an Ubuntu 20.04.1 LTS VM as a host system. As long as those are not graphics intensive or processor intensive, they should work just fine. You can cross-compile your application or library in your host PC (compiling them in the emulator would be very slow), copy them to the VM (via NFS for example) and run them in your ARM emulator. That’s it, you now have a running ARM virtual machine. Qemu-system-arm -m 256 -M versatilepb -kernel ~/arm-emul/vmlinuz-2.6.26-2-versatile -initrd ~/arm-emul/initrd.img-2.6.26-2-versatile -hda ~/arm-emul/hda.img -append “root=/dev/sda1” Then run Debian ARMEL in QEMU as follows: Sudo mount -o loop,offset=32256 ~/arm-emul/hda.img ~/arm-emul/mountĬp ~/arm-emul/mount/boot/initrd.img-2.6.26-2-versatile ~/arm-emul/ Once the installation is complete, mount the first disk partition of the QEMU disk image with a loop device (offset 32256) in order to copy the initrd (rootFS) ( mount QEMU images): Qemu-system-arm -m 256 -M versatilepb -kernel ~/arm-emul/vmlinuz-2.6.26-2-versatile -initrd ~/arm-emul/initrd.gz -hda ~/arm-emul/hda.img -append “root=/dev/ram”Īfter the system reboots, close QEMU. This may take several hours, since all instructions are decoded by software: Run the ARM virtual machine and follow the instructions to install Debian. QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5), Copyright (c) 2003-2008 Fabrice Bellard Debian ARM Installation in QEMUĬreate a directory to store the required files for the emulator and download the Debian Lenny ARMEL kernel (vmlinuz) and debian installer rootfs (initrd.gz):Ĭreate a raw virtual hard disk large enough (e.g. Sudo apt-get install qemu-kvm qemu-kvm-extras QEMU (Qemu-kvm) Installationįirst install qemu-kvm and qemu-kvm-extras (the latter contains qemu-system-arm):
Qemu system arm how to#
I’ll show how to run Debian Lenny ARMEL in QEMU on a computer running Ubuntu 10.10 (aka Ubuntu Maverick Meerkat). In a way, QEMU is similar to VirtualBox, VMWare or Citrix Xendeskop except it can support multiple architectures. This is where QEMU – a processor emulator – comes to the rescue. but you may not have the hardware required on hand to test them.
Qemu system arm software#
When developing software for embedded systems, you may need to support multiple architectures such as arm, mips, x86, powerpc, alpha etc.