* How to debug gdb using gdb ?
@ 2012-08-07 14:18 Smith John
2012-08-07 14:21 ` Tom Emerson
2012-08-07 14:22 ` Jan Kratochvil
0 siblings, 2 replies; 3+ messages in thread
From: Smith John @ 2012-08-07 14:18 UTC (permalink / raw)
To: gdb
hi,guys:
I am researching gdb source code , and I want to debug it
using its executable file .
but how can I send command to the debugged gdb procedure
which is children process ,
as the gdb which is parent process will deal with every command
inputed from the command line ,so I get no way to communicate with
that debugged gdb procedure.
any advice?
thanks!
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to debug gdb using gdb ?
2012-08-07 14:18 How to debug gdb using gdb ? Smith John
@ 2012-08-07 14:21 ` Tom Emerson
2012-08-07 14:22 ` Jan Kratochvil
1 sibling, 0 replies; 3+ messages in thread
From: Tom Emerson @ 2012-08-07 14:21 UTC (permalink / raw)
To: Smith John; +Cc: gdb
http://sourceware.org/gdb/current/onlinedocs/gdbint/Debugging-GDB.html#Debugging-GDB
On Tue, Aug 7, 2012 at 10:18 AM, Smith John <baseboy126@gmail.com> wrote:
> hi,guys:
>
> I am researching gdb source code , and I want to debug it
> using its executable file .
> but how can I send command to the debugged gdb procedure
> which is children process ,
>
> as the gdb which is parent process will deal with every command
> inputed from the command line ,so I get no way to communicate with
>
> that debugged gdb procedure.
>
>
>
> any advice?
>
>
> thanks!
--
Tom Emerson
tremerson@gmail.com
http://www.dreamersrealm.net/tree
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to debug gdb using gdb ?
2012-08-07 14:18 How to debug gdb using gdb ? Smith John
2012-08-07 14:21 ` Tom Emerson
@ 2012-08-07 14:22 ` Jan Kratochvil
1 sibling, 0 replies; 3+ messages in thread
From: Jan Kratochvil @ 2012-08-07 14:22 UTC (permalink / raw)
To: Smith John; +Cc: gdb
On Tue, 07 Aug 2012 16:18:01 +0200, Smith John wrote:
> but how can I send command to the debugged gdb procedure
> which is children process ,
I find most easy to make child GDB non-interactive. So that you do not have
to re-enter the exact commands to reproduce the problem each time. Therefore
use -ex (or -x) for the child GDB:
gdb -ex 'b breakpoint.c:9152' -ex r --args ./gdb ~/t/try5 -ex 'b display' -ex r -ex up -ex b -ex 'info b' -ex 'p/x $pc' -ex 'info line *$pc' -ex 'set confirm no' -ex q -q
Regards,
Jan
^ permalink raw reply [flat|nested] 3+ messages in thread
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