Re: need ld fix in assign_file_positions_for_segments

On Sun, 3 Jun 2001 18:17:37 +0000, 
        Don Lindsay <address@hidden> wrote:

>          /* The section may have artificial alignment forced by a
>             link script.  Notice this case by the gap between the
>             cumulative phdr vma and the section's vma.  */
>          if (p->p_vaddr + p->p_memsz < sec->vma)
>            {
>              bfd_vma adjust = sec->vma - (p->p_vaddr + p->p_memsz);
>
>              p->p_memsz += adjust;
> --->         off += adjust;
>              voff += adjust;
>              if ((flags & SEC_LOAD) != 0)
>                p->p_filesz += adjust;
>            }
>
>The trouble being that sec->vma is 0xf0000000. (I have a fancy link
>script: the code is for an embedded CPU.) So, "adjust" becomes huge
>(and negative)

Here's a Linux cutdown that shows the problem.

---------------< link script "j.link" >-----------------

PHDRS
{
        noload PT_NULL;
        load PT_LOAD;
}
SECTIONS
{
.bss    ALIGN(4) (NOLOAD) :
        {
                _bbss = ABSOLUTE(.);
        } :noload
.noload (0xF0000000) (NOLOAD) : { *(*); } :noload
}

-------------------< jbad.c >-----------------------------

static void foo (void) __attribute__(( section(".noload") ));
static void foo (void) {}

----------------------------------------------------------------------

Do this:

        gcc -c jbad.c
        ld -T j.link jbad.o

and on Red Hat Linux 7.0 it prints:

        ld: a.out: warning: allocated section `.noload' not in segment
        ld: final link failed: File truncated

But the full program links correctly, if I use a gcc that's a
few years old.

?? 

Don