TODO

fix initrd after moving out of buildroot for kernel build...

use relative paths as much as possible, especially to produce nicer commands when reporting upstream bugs

destroy ./build, properly track and resolve dependencies, use ./lkmc run emulator=qemu dependencies=1 as interface.

kvm on raspberry pi

break up --prebuilt into --qemu-source (host|lkmc) and --toolchain-source (host|bruildroot|crosstool-ng). make it possible to select which toolchain to use or which qemu to use (host vs our own), don't fall back under users back

global option to force rebuild, especially for kernel modules that rely on linux kernel? currently --clean + build

review prebuilt section. Explain GCC search algorithm.

fix initramfs after moving out of buildroot for kernel build...

test bisect-linux-boot-gem5

kernel module build variants to match multiple linux kernel builds, and for host

Explain how to do: Find Buildroot options with make menuconfig: make awesome with savedefconfig. Maybe explain that on the Linux kernel itself when that is split out of Buildroot.

aarch64 newlib _exit semihost connect status from C

review buildroot section, it's crap

test in docker and prebuilt getting started. Add a tested on marker on the Docker.

finer script argument factoring, e.g. no --run-id on ./build-* ...

Do a Linux kernel config bisection detailed example with ktest, possibly Tests for --paramcopy setup from: https://github.com/satoru-takeuchi/elkdat

Decouple port selection from directory selection when using -n, use two separate flags. Otherwise, if you run, checkpoint, start another, then you can't restore gem5 (needs new port but old checkpoint dir).

debug build for QEMU, gem5 already exists with -t debug

python: trace-boot, allow taking ALL run options, just set some defaults differently

get rid of trace2line.sh.

prebuilt gem5: reverse qemu-img on the distributed qcow2 :-)

Ctrl + C not killing bootstrap in ./build-crosstool-ng, why?

common.run_cmd let it pipe properly, e.g.:

./run-toolchain -aA --baremetal all objdump -- -S ./out/baremetal/aarch64/qemu/virt/main.elf | less

gives after closing:

Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='UTF-8'>
BrokenPipeError: [Errno 32] Broken pipe

add a --dry-run option to run that prints the command to run, but does not actually run it. Ideally also does not create any directories or files.

make testing more granular, document how to test just qemu or just gem5 kernel boots for example

./run -aa -gu --gem5-worktree master does not pass worktree to ./gem5-shell

kernel cli treat as array, allow add and remove default options

Imagemagick dependency for test-gem5-graphics.

Add --terminal to ./build-buildroot --terminal -- menuconfig and linux.

gem5

expose running the tests: scons build/ARM/tests/opt/quick/se, etc.

cannot build while another one is running, because m5term is being executed and we try to overwrite

Linux __builtin_expect make test with gem5 https://stackoverflow.com/questions/7346929/why-do-we-use-builtin-expect-when-a-straightforward-way-is-to-use-if-else/31540623#31540623

Userland

Assembly examples. Replicate baremetal tree/

Add --static flag.

./test-gdb: make work for x86-64 userland

Test

bench-boot: run in parallel... likely convert to python first.

Images

Docker or some other setup for the Ubuntu image https://github.com/cirosantilli/linux-kernel-module-cheat/issues/35

go nuts and get xen running on QEMU with buildroot guests, failed attempt: http://mgalgs.github.io/2012/03/12/running-xen-under-qemu.html

android. yes, my desire to suffer is that great

Integrate UML properly in the scripts: https://github.com/cirosantilli/linux-kernel-module-cheat#user-mode-linux

Kernel modules

build-modules: install to make available to modprobe

Benchmark

benchmark gem5 single file rebuild (link time)

add dhrystone on full system and userland

baremetal

baremetal c++

prebuilts for baremetal examples

no_bootloader: don't link to lib C files to make it more minimal, in particular starts at exact address, and disassembly is cleaner

build only given targets

HW architecture

https://github.com/Kobzol/hardware-effects observe all on gem5 bare metal