On 2/5/2018 7:10 PM, Liu, Jing2 wrote:
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?
BTW, qemu can run correctly with the same bios when don't debug with "-S -s".
Thanks!
Jing
-Jing
-Kevin