[SeaBIOS] [Question] Debug Seabios by GDB with Qemu

Liu, Jing2 jing2.liu at linux.intel.com
Mon Feb 5 12:10:58 CET 2018

Hi Kevin,

On 1/31/2018 10:46 AM, Kevin O'Connor wrote:
> On Mon, Jan 29, 2018 at 02:18:45PM +0800, Liu, Jing2 wrote:
>> Hello,
>> I am using Seabios for qemu startup, and interested in the debugging by GDB
>> to see how the bios works.
>> Currently, I do it as https://www.seabios.org/Debugging said but met some
>> problems so that couldn't move on. :(
>> Could someone give some pointers on what I missed or have to do to enable
>> the gdb debugging?
>> Note:
>> Arch: x86_64 PC
>> CONFIG_DEBUG_SERIAL is enabled.
>> CONFIG_RELOCATE_INIT is disabled.
>> 1.  After Qemu starts, I run "gdb out/rom32seg.o" in another session, and do
>> "target remote localhost:1234", it warns me that
>> "Selected architecture i386 is not compatible with reported target
>> architecture i386:x86_64". But I didn't find any 64bit rom.
> I'm not sure why you choose out/rom32seg.o - to debug the 32bit code,
> you want to use out/rom.o.

Thank you for your answer!
But after I connect to qemu in the gdb session, and execute "run" OR 
"start" to start the rom.o, it both reports me a signal SIGKILL.

I don't know why?

> -Kevin

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