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Re: [3.3 regression?] flag_hosted and back-ends
> Date: Fri, 14 Mar 2003 16:22:36 -0800
> From: Jason R Thorpe <thorpej at wasabisystems dot com>
> On Fri, Mar 14, 2003 at 03:54:18PM -0800, Geoff Keating wrote:
>
> > Why can't GRUB supply its own __enable_execute_stack function, that
> > does whatever the right thing is for GRUB's environment?
>
> I can see a couple of reasons why that would not be appropriate:
>
> * Random applications should not have to know about internal
> routines in libgcc.
GRUB is not a 'random application'. It's a very small operating
system. Since this is an operating system interface, I don't think
it's unreasonable that GRUB should need to know about it.
> * An application that uses -ffreestanding has pretty much
> told the compiler "don't assume I'm in a hosted environment".
> The __enable_execute_stack() function *does* assume a hosted
> environment. It seems perfectly logical that it should not
> be used if the application is free-standing.
I don't see how your logic distinguishes __enable_execute_stack from
memcpy. I also don't see how __enable_execute_stack assumes a hosted
environment; for instance, surely GRUB hasn't disabled the icache?
--
- Geoffrey Keating <geoffk at geoffk dot org>