Re: DW_FORM_ref_addr dosn't work

[Daniel Jacobowitz <drow@mvista.com>]

On Wed, Jul 30, 2003 at 02:42:52PM -0700, H. J. Lu wrote:
> DW_FORM_ref_addr can reference an entry in a different compilation
> unit, even from a different shared object. But die_ref_table only
> contains DIEs in one single compilation unit. Why do we do that? What
> is the best way to fix it?
> 
> BTW, I am enclosing my quick dirty hack for reference.

Please read any of the thirty-some discussions of this in the list
archives.

I'm working on it in my spare time, of which I have not had enough to
make much progress.  The DWARF reader needs to be essentially
rewritten.

> 
> 
> H.J.
> ----
> --- dwarf2read.c.ref	2003-07-30 09:43:51.000000000 -0700
> +++ dwarf2read.c	2003-07-30 14:41:24.000000000 -0700
> @@ -1195,6 +1195,7 @@ dwarf2_build_psymtabs_hard (struct objfi
>    struct partial_symtab *pst;
>    struct cleanup *back_to;
>    CORE_ADDR lowpc, highpc;
> +  struct die_info *dies;
>  
>    info_ptr = dwarf_info_buffer;
>    abbrev_ptr = dwarf_abbrev_buffer;
> @@ -1280,6 +1281,8 @@ dwarf2_build_psymtabs_hard (struct objfi
>        dwarf2_read_abbrevs (abfd, &cu_header);
>        make_cleanup (dwarf2_empty_abbrev_table, cu_header.dwarf2_abbrevs);
>  
> +      dies = read_comp_unit (info_ptr, abfd, &cu_header);
> +
>        /* Read the compilation unit die */
>        info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr,
>  				   &cu_header);
> @@ -3654,9 +3657,11 @@ read_comp_unit (char *info_ptr, bfd *abf
>    char *cur_ptr;
>    int nesting_level;
>  
> +#if 0
>    /* Reset die reference table; we are
>       building new ones now.  */
>    dwarf2_empty_hash_tables ();
> +#endif
>  
>    cur_ptr = info_ptr;
>    nesting_level = 0;
> 

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer