how to add a new command in the gdb

hi...
    If I want to add a new command in the gdb, such as
"info TLB" or
some special operations. What should I do?
I'm using a RSP to communicate a target simulator. So, it is
remote debugging!

 any suggestion is welcome.
best regards,

Dave.

-- 
System  on Chip Design  Lab.
Dept. of Computer Science and Information Engineering,
National Chung Cheng University
E-mail : s88.twacm.org

s88 <dave.twgmail.com> writes:
>    If I want to add a new command in the gdb, such as
"info TLB" or
> some special operations. What should I do?
> I'm using a RSP to communicate a target simulator. So,
it is remote debugging!

Each .c file in the GDB sources ends with a function named
_initialize_foo.  Those call functions like 'add_cmd'.  I'm
afraid
you'll need to look at the definitions of add_cmd and its
companions
for the details.

Jim Blandy wrote:
> s88 writes:
>>    If I want to add a new command in the gdb, such
as "info TLB" or
>> some special operations. What should I do?
>> I'm using a RSP to communicate a target simulator.
So, it is remote debugging!
> 
> Each .c file in the GDB sources ends with a function
named
> _initialize_foo.  Those call functions like 'add_cmd'. 
I'm afraid
> you'll need to look at the definitions of add_cmd and
its companions
> for the details.
> 

Or, if you control the remote stub talking to the simulator,
implement
a monitor command:

"monitor cmd
     This command allows you to send arbitrary commands
directly to the remote 
monitor. Since GDB doesn't care about the commands it sends
like this, this 
command is the way to extend GDB---you can add new commands
that only the 
external monitor will understand and implement."

http://sourceware.org/gdb/current/onlinedocs/gdb_
18.html#IDX793

Cheers,
Pedro Alves