3rd-party/linux-kernel-module-cheat
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qemu user gdb example

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Ciro Santilli
2018-07-13 17:25:03 +01:00
parent 7a53483ba8
commit a51526c600
1 changed files with 12 additions and 4 deletions
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README.adoc
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@@ -6586,12 +6586,20 @@ Anyways, this warns us that the userland emulation will likely not be reliable,
GDB step debugging is also possible with:
....
qemu-arm -g 1234 -L . bin/ls
../host/usr/bin/arm-buildroot-linux-uclibcgnueabi-gdb -ex 'target remote localhost:1234'
cd out/arm/buildroot/target
qemu-arm -g 1234 -L . ../build/kernel_module-1.0/user/myinsmod.out
../host/usr/bin/arm-buildroot-linux-uclibcgnueabihf-gdb \
--nh \
-ex 'set architecture arm' \
-ex 'set sysroot .' \
-ex 'file ../build/kernel_module-1.0/user/myinsmod.out' \
-ex 'target remote localhost:1234' \
-ex 'break main' \
-ex 'continue' \
-ex 'layout split' \
;
....
TODO: find source. Lazy now.
link:https://stackoverflow.com/questions/48959349/how-to-solve-fatal-kernel-too-old-when-running-gem5-in-syscall-emulation-se-m[crosstool-ng] tests show that QEMU also has a runtime check for the kernel version which can fail as:
....