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Debugging the QEMU VM

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Leandro Zungri edited this page Apr 4, 2020 · 2 revisions

There are two simple steps you need to follow in order to debug QEMU:

  1. Launch QEMU in debug mode
  2. Start the debugger

Launching QEMU in debug mode

Run the launch.py script with the -D option as in:

$LARITOS/tools/qemu/launch.py -D

You should immediately see the following message:

Launching qemu in debugging mode (listening on :55555)

Then, the launcher will wait until the debugger is connected.

Launching the debugger

Open a new terminal and run the following command:

gdb <your_qemu>/bin/arm-softmmu/qemu-system-arm -ex "target remote :55555" -q

Home

Getting started

  1. Setting up a build environment
  2. Downloading the source code

Building and running

  1. Building the OS
  2. Building userspace applications
  3. Running the OS on QEMU
  4. Running test cases on QEMU

Design

  1. OS architecture
  2. OS images
  3. Kernel memory layout
  4. Testing framework

Develop

  1. Kernel glossary
  2. Directory structure
  3. Quick guide to the source code
  4. Developing drivers
  5. Developing test cases

Debugging

  1. Using the Logging infrastructure
  2. Using QEMU tracing framework
  3. Debugging the kernel
  4. Debugging the QEMU VM
  5. Debugging userspace apps
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