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To: Petr Sorfa <petrs@caldera.com>
Cc: gdb-patches@sources.redhat.com
Subject: Re: [PATCH] DW_AT_calling_convention support
References: <3D2B5385.997D474D@caldera.com>
	<20020709211520.GA21948@nevyn.them.org>
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	<20020710140354.GA25081@nevyn.them.org>
	<3D2C4567.3AD10A8B@caldera.com>
	<20020710142554.GA26025@nevyn.them.org>
	<np3curzhyu.fsf@zwingli.cygnus.com> <3D2C66E9.94EE977@caldera.com>
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From: Jim Blandy <jimb@redhat.com>
Date: Wed, 10 Jul 2002 11:47:00 -0000
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Petr Sorfa <petrs@caldera.com> writes:
> > Okay, I'll look forward to the patch.
> In a few minutes.
> 
> > Is checking the calling convention really the approved technique for
> > recognizing a Fortran entry point in Dwarf 2?  Is it really the case
> > that Fortran programs always only have one function with this calling
> > convention?  Would your patch do something sensible if it found more
> > than one?
> Good question, the Dwarf standard V3 Draft 7 Page 44 says:
> 
> "The DW_CC_program value is intended to support Fortran main programs.
> It is not intended as
> a way of finding the entry address for the program."
> 
> So the answer is yes and no. But I think the patch is valid as it
> determines not the entry point, but the main program. As far as I am
> aware you can have only one PROGRAM entry per FORTRAN program. If there
> is more than one found, the patch just uses the last read entry. I don't
> think supporting a more intricate way would be much use (such as keeping
> a list of DW_CC_program entries.)

What's the difference between the entry point and the main program?