* set debug entry point
@ 2013-04-07 14:24 ishare
2013-04-07 14:31 ` Joel Sherrill
0 siblings, 1 reply; 2+ messages in thread
From: ishare @ 2013-04-07 14:24 UTC (permalink / raw)
To: gdb
If one elf has no main , where does gdb start to trace it ?
is there mothod to tell gdb start at specified address?
tks!
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: set debug entry point
2013-04-07 14:24 set debug entry point ishare
@ 2013-04-07 14:31 ` Joel Sherrill
0 siblings, 0 replies; 2+ messages in thread
From: Joel Sherrill @ 2013-04-07 14:31 UTC (permalink / raw)
To: ishare; +Cc: gdb
On 04/07/2013 09:21 AM, ishare wrote:
>
> If one elf has no main , where does gdb start to trace it ?
Every program has a starting point. main() is just the first
user provided code that runs in a C program. Set up
and initialization code has run before that.
When the program was linked, it could have used a linker
directive or the ld --entry argument to specify the entry
symbol.
> is there mothod to tell gdb start at specified address?
gdb should start the program at the entry address. You
can always set the program counter directly using
something like set $pc XXX but that is architecture
specific.
> tks!
--
Joel Sherrill, Ph.D. Director of Research& Development
joel.sherrill@OARcorp.com On-Line Applications Research
Ask me about RTEMS: a free RTOS Huntsville AL 35806
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