* examine memory coomand
@ 2012-08-20 8:27 John Smith
2012-08-20 8:34 ` Jan Kratochvil
0 siblings, 1 reply; 2+ messages in thread
From: John Smith @ 2012-08-20 8:27 UTC (permalink / raw)
To: gdb
hi,
when gdb try to get memory data from "examine " command , is it
get data from pythical memory with a "mov" operation or from
memory map file?
thanks!
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: examine memory coomand
2012-08-20 8:27 examine memory coomand John Smith
@ 2012-08-20 8:34 ` Jan Kratochvil
0 siblings, 0 replies; 2+ messages in thread
From: Jan Kratochvil @ 2012-08-20 8:34 UTC (permalink / raw)
To: John Smith; +Cc: gdb
On Mon, 20 Aug 2012 10:27:12 +0200, John Smith wrote:
> when gdb try to get memory data from "examine " command , is it
> get data from pythical memory with a "mov" operation or from
> memory map file?
Assuming GNU/Linux OS here.
It is read by PTRACE_PEEKDATA or from /proc/PID/mem. It is virtual address
space of the process (not physical memory), as provided by kernel.
Jan
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