On 8/12/05, Erik Mouw <J.A.K.Mouw@xxxxxxxxxxxxxx> wrote:
> On Fri, Aug 12, 2005 at 09:06:22PM +0700, Nguyen Anh Phu wrote:
> > On 8/12/05, Erik Mouw <J.A.K.Mouw@xxxxxxxxxxxxxx> wrote:
> > > On Fri, Aug 12, 2005 at 08:53:36PM +0700, Nguyen Anh Phu wrote:
> > > > if I don't use kernel module, how do I read registers of threads in
> > > > current process?
> > >
> > > In userland you could use gdb.
> > >
> >
> > Is there anyway to read them inside the program?
>
> With some inline assembly. On x86, you could try something like:
>
> int cs_val;
>
> asm("mov %%cs, %0": "=r"(cs_val));
>
> I haven't tested this, so I have no idea if I have the inline assembly
> syntax correct.
>
> BTW, this kind of stuff is not useful from within a program. A running
> program will modify its own registers. Why do you think this can be
> useful for you?
>
Oh, of course I don't want to modify registers from within program, in
fact, I want to monitor stack usage of my program, so I want to read
esp register and compare it with start address of stack. Is there a
"non-asm" way to do?
Regards,
--
Phu
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