The attached patch isn't for submission, but just to help
illustrate the problem.  It fixes a symptom but seems kludgy
to me (and not well understood).

Here's the problem.  I have a kernel image which is statically
linked and PIE.  When it gets to enable_break, it succeeds in
finding "debug_base", but "debug_base" is in the text section
of the main executable (ie. not in the dynamic loader, which is
not actually present).

Therefore we compute info->interp_text_sect_low and
info->interp_text_sect_high as the start and end of the text
section of the main executable.  And therefore whenever we
call in_solib_dynsym_resolve_code(), it returns TRUE, and
therefore source level stepping won't work.


This simple patch just checks to see whether "tmp_bfd" (which
is supposed to be the dynamic loader) matches exec_bfd, and
if so, lets interp_text_sect_low and interp_text_sect_high
remain zero.

Anybody got a better suggestion?