>From: Andrew Cagney <ac131313@redhat.com>
>To: liu lijuan <lljchina@hotmail.com>
>CC: gdb@sources.redhat.com
>Subject: Re: about gdb's compiled-in simulator
>Date: Thu, 13 Mar 2003 12:08:06 -0500
>
> >
> >   After gdb get the commands from keyboard,does gdb put these commands 
into a cmd_buffer,and then gdb and compiled-in simulator access the 
cmd_buffer together?
> >   Or does gdb and compiled-in simultor have any rules about the request 
and reply of commands ?    Thanks for your help!
>
>GDB calls:
>
>include/gdb/remote-sim.h:sim_do_command()
>
>with the command string in a buffer.  There isn't any expected return
>value (the command can't fail).
>
>Andrew

   what you mean is that gdb call sim_do_command() to deal with the 
commands in command line which send to simulator.But after disable this 
function in all files like this //sim_do_command(),then I recompile 
cross-gdb,and it can work normally
and gdb and simulator can deal with commands as usual.So I still feel 
puzzled how simulator identify the commands from gdb command line.
  please can you tell me why?
  Thanks!
liu


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