Re: [Qemu-discuss] Singlestepping & Target assembly instructions

[Scott Dattalo]

On 9/17/2015 12:06 PM, Peter Maydell wrote:
> If "-d help" doesn't produce a list including 'nochain' with the
> help text as per the patch, then something has gone wrong with your
> compile/install process, or you're just accidentally running the
> wrong qemu binary.

You're correct: the version in /usr/bin was taking precedence over the 
one in /usr/local/bin. I should've caught that... The nochain option is 
indeed enabled with the patch.

Unfortunately, I must be missing something else. Here's how I invoke QEmu:

$ qemu-system-arm -M versatilepb -m 128M -nographic -D trace.log -d 
in_asm,cpu,nochain -singlestep -kernel myfile.bin

The same trace.log is produced when 'nochain' is omitted. I was 
expecting the nochain to tell QEmu to emit the entire execution trace. 
Am I missing (or adding) another option? Or am I misunderstanding the 
intent of nochain?

BTW, the -s -S options still allow gdb to attach and the trace log for 
single stepping is the same as before.

Thanks for your patience!

Scott