Re: [uml-devel] ARCH=um SUBARCH=i386 breakage?

[Jeff Dike <jdike@addtoit.com>]

On Fri, Jul 13, 2007 at 06:41:24PM +0100, Antoine Martin wrote:
> >Could you check this there by seeing if something like this builds
> >(with user.h removed):
> >
> >#include <asm/elf.h>
> >
> >int main(void){
> >	printf("%d %d\n", sizeof(elf_fpregset_t), sizeof(elf_fpxregset_t));
> >  
> My kernel headers are also missing elf.h, so this doesn't work either...

elf.h is supposedly exported in 2.6.22, although I guess someone took the
comment seriously:

	# These probably shouldn't be exported
	unifdef-y += shmparam.h
	unifdef-y += elf.h
	unifdef-y += page.h

So, I have no idea how userspace is supposed to figure out how big a
buffer to pass to PTRACE_GETFPREGS and PTRACE_GETFPXREGS.  I think the
headers are broken here.

> It is included in page.h:
> 
>  CC      arch/um/sys-i386/user-offsets.s
> In file included from /usr/include/asm/user.h:5,
>                 from arch/um/sys-i386/user-offsets.c:7:
> /usr/include/asm/page.h:4:25: error: linux/const.h: No such file or 
> directory

This is just broken, then.  The headers should at least have no
dangling includes.

> I get the same error as above because user.h includes  asm/page.h

Hummm, I guess the header tidying people need to fix a bunch of
things.  I'll make whatever changes needed in UML to not use illicit
headers, but I do need complete interface definitions, as with the FP
stuff.

				Jeff

-- 
Work email - jdike at linux dot intel dot com

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