On Mon, Feb 15, 2021 at 11:37 AM vincent Dupaquis
<v.dupaquis@trusted-objects.com> wrote:
Hello,
I am using qemu-system-arm with a netduino2 target, supposingly
integrating a STM32F2xx chip.
I tested using the STM HAL in order to make a simple program run,
and I just failed to have it running correctly, it satyed stuck on the
starting HAL_init() call.
Debugging the code, it appeared that stepping-in was making the code
work while when running it it failed (stayed stuck in an infinite loop,
but no obvious arm violations).
Has anyone any idea of what could be the cause for this ? I am using
the latest STM32 HAL, with a qemu version 5.1.0 on a Ubuntu 20.04
machine. What is the level of support this type of target is supposed to
have, and posibly which limitations should I take into account ?
Hey Vincent,
The model was never tested with the HAL. HALs commonly have infinite
loops inside them and it seems like you have hit one of them where the
HAL is waiting on some bit to change. I'm surprised that single
stepping fixes the problem though.
You will probably need to figure out where the loop is occuring
(either through GDB or prints/assembly/execution output), after which
it should be possible to fix the hang.
Alistair
Best regards,
Vincent.
--
*Vincent Dupaquis*
Software security & Cryptography expert
06 24 58 17 05
/Europarc de Pichaury Bâtiment B8 1330 rue Guillibert Gautier de la
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www.trusted-objects.com <http://www.trusted-objects.com>