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Re: D10V_MAKE_IADDR / D10V_MAKE_DADDR / GDB_TARGET_IS_D10V


On Mon, Jul 24, 2000 at 01:03:09PM -0500, Jim Blandy wrote:
> 
> > One thing that you may want to keep in mind is that it may not just
> > be text vs. data.  I once wrote a C compiler for a machine that 4
> > different pointer formats (pointers to 16-bit words, pointers to
> > bytes, and 2 different bit pointers).  The original machine in the
> > family did not have byte addressing at all, and so when they hacked
> > in byte addressability, the byte pointer was the word pointer
> > shifted left one bit (losing the top bit, which was an indirection
> > bit, and not used for the address itself).
> 
> But in all these cases, you must be able to determine the pointer
> format from the C type.  Otherwise, the * operator doesn't know what
> to do when applied to some external pointer variable --- the type is
> all the info it has.
> 
> So, the conversion macros get the pointer type as an argument --- not
> some hacky my-problem-is-the-only-problem data/text flag.

That was the point I was trying to express.

-- 
Michael Meissner, Red Hat, Inc.
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Work:	  meissner@redhat.com		phone: +1 978-486-9304
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