All data in IDA Pro turns into zeros when using QEMU

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Asked 7 years, 2 months ago

Modified 7 years, 2 months ago

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I'm trying to emulate a snippet of ARM assembly I have in IDA pro using QEMU. However I do not understand the output of the program.

When I start debugging the firmware, windows pop up for QEMU. However all the data in IDA turns into zeros, as can be seen in the picture below.

Why is this happening?

Is this normal behavior of the program?

Other information:

the binary I am trying to emulate is for a device with:

the gdb debug configuration command line is:

"C:\Program Files (x86)\qemu/qemu-system-arm" -S -gdb tcp::%p,ipv4 -kernel "%e" -M versatilepb -cpu cortex-a8

The initial SP is 0x20000000 and the memory map looks like this

asked Sep 25, 2016 at 21:10

HolyGuacamole

336 bronze badges

In absence of other information, an obvious hypothesis would be that you misconfigured something. Check the guide you linked again.
– Vitaly Osipov
Sep 29, 2016 at 3:58
@VitalyOsipov I added more information to the question.
– HolyGuacamole
Oct 12, 2016 at 8:35
Did you ever find a solution to this? I have been running into this with remote GDB debugging.
– LUser
Nov 20, 2017 at 18:04
@ApertureSecurity No, as far as I remember I didn't.
– HolyGuacamole
Nov 24, 2017 at 13:35

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