[Dwarf-Discuss] how to find local variable stored in register

[Neeraj kushwaha]

Thanks Michael and Frank for the valuable information.
I will check processor ABI spec to get its details.

Regards
Neeraj


On Feb 5, 2008 5:57 AM, Michael Eager <eager at eagercon.com> wrote:
>
> Frank Ch. Eigler wrote:
> > Hi -
> >
> > On Mon, Feb 04, 2008 at 03:19:43PM -0800, Michael Eager wrote:
> >> Frank Ch. Eigler wrote:
> >> [...]
> >>>> Suppose this foo() funciton call another function, then this
> >>>> register value will get stored in stack before invoking the function
> >>>> call.
> >>> A truthful compiler will add extra location records for this variable
> >>> for the time (PC ranges) when its value is on the stack.
> >> DWARF does not describe where variables are saved as result of a
> >> function call.  This is specified by the processor ABI.
> >
> > A close reading of the original posting shows ... "before invoking the
> > function call" ... that is during the function call setup instructions
> > within the *caller*.  DWARF should indeed describe the saved location
> > of the variable in these regions AFAIK.
>
> The register is stored as part of the calling convention.
> DWARF does not duplicate information contained in the ABI
> specification.
>
>
> --
> Michael Eager    eager at eagercon.com
> 1960 Park Blvd., Palo Alto, CA 94306  650-325-8077
>