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Re: [PATCH] DW_AT_calling_convention support
I'd rather save a pointer the symbol for the main function, or
something along those lines - do you think that's workable?
On Tue, Jul 09, 2002 at 05:36:46PM -0400, Petr Sorfa wrote:
> Hi Daniel,
>
> Valid point, however there is a (hopefully not misguided) reason; I use
> it when printing a subroutine type for FORTRAN95. I make the assumption
> that determining whether a symbol name is equivalent to main_name() is
> not sufficient.
>
> Petr
> > > Patch for supporting DW_AT_calling_convention. This helps GDB identify
> > > the "main" program for languages that do not have a starting subroutine
> > > called "main". The patch also adds a new type flag,
> > > TYPE_FLAG_MAIN_PROGRAM which is set if the type is describing a "main"
> > > entry point. This can be used, for example, in noting a subroutine type
> > > as a FORTRAN PROGRAM.
> > >
> > > 2002-07-09 Petr Sorfa (petrs@caldera.com)
> > >
> > > * dwarf2read.c (read_subroutine_type): Expanded to recognize
> > > the DW_AT_calling_convention DWARF attribute and for
> > > DW_CC_program set the TYPE_FLAG_MAIN_PROGRAM type flag
> > > and call set_main_name ().
> > > (read_partial_die): Now recognizes the
> > > DW_AT_calling_convention attribute and calls set_main_name().
> > > Note that TYPE_FLAG_MAIN_PROGRAM type flag is not set, as
> > > the partial_die might not denote a subroutine type.
> > >
> > > * gdbtypes.h (TYPE_FLAG_MAIN_PROGRAM): New type flag which
> > > indicates whether the type denotes a main program subroutine.
> > > (TYPE_MAIN_PROGRAM): New macro that returns a non-zero value
> > > if the type describes a main program subroutine.
> >
> > Why is the type flag necessary? It seems wasteful to allocate a bit in
> > every type when there will presumably only be one such routine.
> >
> > --
> > Daniel Jacobowitz Carnegie Mellon University
> > MontaVista Software Debian GNU/Linux Developer
>
>
--
Daniel Jacobowitz Carnegie Mellon University
MontaVista Software Debian GNU/Linux Developer