Patch to fix problems with memory regions and OVERLAYs

[Alan Modra]

On Wed, May 01, 2002 at 07:05:45PM +0100, Richard Sandiford wrote:
> [ld/]
> 	* ldlang.h (lang_output_section_statement_type): Add update_dot_tree.
> 	(lang_enter_overlay): Remove the last two parameters.
> 	(lang_leave_overlay): Take them here instead.
> 	* ldgram.y (memspec_at_opt): Set $$ to null if no region is given.
> 	(section): Pass LMA and crossref flag to lang_leave_overlay rather
> 	than lang_enter_overlay.
> 	* ldlang.c (lang_memory_region_lookup): Return null for null names.
> 	(lang_output_section_statement_lookup): Initialize update_dot_tree.
> 	(lang_size_sections_1): Evaluate it.
> 	(lang_leave_output_section_statement): Rework LMA lookup.
> 	(overlay_lma, overlay_nocrossrefs): Remove.
> 	(lang_enter_overlay): Remove LMA and corssref arguments.
> 	(lang_enter_overlay_section): Don't set the LMA here.
> 	(lang_leave_overlay): Take LMA and crossref arguments.  Move the '.'
> 	assignment to the last section's update_dot_tree.  Unconditionally
> 	use the load and run-time regions specified in the OVERLAY statement.
> 	Likewise the first section's LMA.  Only set the other sections' LMAs
> 	when no load region is given.
> 
> [ld/testsuite/]
> 	* lib/ld-lib.exp (run_dump_test): Add -L$srcdir/$subdir.
> 	(is_elf_format): New, extracted from...
> 	* ld-scripts/weak.exp: ...here.
> 	* ld-scripts/overlay-size.exp: New test.
> 	* ld-scripts/overlay-size.[tsd],
> 	* ld-scripts/overlay-size-map.d: New files for it.

Looks reasonable to me.

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre