[patch gas]: Add missing parts for pdata/xdata generation

[Dave Korn]

On 14/07/2010 20:33, Kai Tietz wrote:

>         * config/obj-coff-seh.c
>         (seh_getelm_data_size): New.
>         (seh_read_offset): Handle negative values.
>         (obj_coff_seh_push): Handle offset for save-register store.
>         (obj_coff_seh_setframe): Add unwind-information for frame.
>         (seh_store_elm_data): New.
>         (seh_getelm_data_size): Return additionally unaligned element count.
>         (seh_make_unwind_entry): Correct tweak about element count.
> 
> Tested for x86_64-pc-mingw32. (Build test for i686-pc-cygwin and
> i686-pc-mingw32). Ok for apply?

  There are several repeated constructs like this:

> +	    *puwop++ = (c->elems[i].offset & 0xff);
> +	    *puwop++ = ((c->elems[i].offset >> 8) & 0xff);
> +	    *puwop++ = ((c->elems[i].offset >> 16) & 0xff);
> +	    *puwop++ = ((c->elems[i].offset >> 24) & 0xff);

  Are there not convenient bfd_ endian macros you could use in these cases?
Please replace with pre-existing macros if any are suitable; otherwise, OK.

    cheers,
      DaveK