[PATCH] elf: Set text-segment address to the maximum page size

[Nick Clifton]

Hi H.J.

> 	PR ld/34184
> 	* ldexp.c (fold_binary): Set text-segment address to the maximum
> 	page size for ELF PDE output with -z max-page-size=SIZE.
> 	* testsuite/ld-elf/elf.exp: Add ld/34184 test.
> 	* testsuite/ld-elf/pr34184.c: New file.

I like this patch, but I do have a couple of comments:

> +      /* When generating Position Dependent Executable for ELF with the
> +	 maximum page size set on command-line, if text-segment address
> +	 is lower than the maximum page size, set text-segment address
> +	 to the maximum page size.  */
> +      if ((bfd_get_flavour (link_info.output_bfd)
> +	   == bfd_target_elf_flavour)
> +	  && bfd_link_pde (&link_info)
> +	  && link_info.maxpagesize_is_set
> +	  && link_info.maxpagesize > value
> +	  && strcmp (segment_name, "text-segment") == 0)
> +	value = link_info.maxpagesize;

I think that it would be helpful to inform the user that the text
segment address is being changed - *if* they have tried to set it
using --image-base or --Ttext-segment.  Otherwise they may wonder
why their command line option is being ignored.


> +    [list \
> +	"Run pr34184" \
> +	"-Wl,-z,max-page-size=0x800000" \
> +	"" \
> +	{pr34184.c} \
> +	"pr34184" \
> +	"pass.out" \
> +    ] \

As far as I can tell, this test does not actually check that
the text segment's address is now a multiple of the max page
size...


Cheers
   Nick