Re: [PATCH] DW_AT_calling_convention support

[Daniel Jacobowitz <drow@mvista.com>]

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