> On March 26, 2012, 9:19 a.m., Ali Saidi wrote:
> > Where are you calling this these functions from? How are you getting a
> > kernel stack pointer?
> >
Whenever an instruction was fetched - so inside of cache_impl.hh access()
something like this:
if (pkt->req->isInstFetch()) {
ThreadContext *tc = system->getThreadContext(id);
Addr stackPtr = tc->readIntReg(INTREG_SP_SVC);
ProcessInfo procInfo(tc);
std::cout << "process: " << procInfo.name(stackPtr) << std::endl;
}
> On March 26, 2012, 9:19 a.m., Ali Saidi wrote:
> > src/arch/arm/stacktrace.cc, line 78
> > <http://reviews.gem5.org/r/1054/diff/4/?file=25072#file25072line78>
> >
> > I'm fairly certain this isn't correct. I've got a kernel that has it at
> > f8000000, so it's not generic. There might be something in the kernel that
> > tells you the start address, but either way I'm not sure what this code is
> > doing in the the context of ARM linux. For Alpha, we knew that the initial
> > stack frame was placed at this address, I don't think we know that for ARM.
There is little documentation on this but, from what I gathered this value is
dependent on the machine type. So, I got the values from the kernel source and
configs used for the RealView PBX machine. Maybe this value can be
parameterized...
- Anthony
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
http://reviews.gem5.org/r/1054/#review2382
-----------------------------------------------------------
On March 24, 2012, 1:19 p.m., Anthony Gutierrez wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://reviews.gem5.org/r/1054/
> -----------------------------------------------------------
>
> (Updated March 24, 2012, 1:19 p.m.)
>
>
> Review request for Default.
>
>
> Description
> -------
>
> Changeset 8917:271859b2e61b
> ---------------------------
> changed from pointers to references for the port proxies. it is still not
> known whether 0xffffffffc0000000 is the correct value to compare against base.
>
>
> Diffs
> -----
>
> src/arch/arm/stacktrace.cc 7d95b650c9b69289db8498b7050fad983af944f6
>
> Diff: http://reviews.gem5.org/r/1054/diff/
>
>
> Testing
> -------
>
> Booted modified kernel (with thread info hints compiled in) while printing
> process names, using ProcessInfo::name(), periodically from atomic cpu's
> tick() method.
>
>
> Thanks,
>
> Anthony Gutierrez
>
>
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