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PR24786, wrong LMA if first section in overlay is empty

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This stops the first overlay section being ignored when empty,
losing its LMA assignment

	PR 24786
	* ldlang.h (enum section_type): Add first_overlay_section.
	* ldlang.c (lang_add_section): Adjust switch statement.
	(map_input_to_output_sections): Likewise.
	(lang_size_sections_1): Always set last_os for first overlay section.
	(lang_leave_overlay): Set sectype to first_overlay_section.
This commit is contained in:
Alan Modra 2019-07-10 23:35:18 +09:30
parent 0c951c25c6
commit 7b2438015c
3 changed files with 21 additions and 8 deletions
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9
ld/ChangeLog
View File

@ -1,3 +1,12 @@
2019-07-13 Alan Modra <amodra@gmail.com>
PR 24786
* ldlang.h (enum section_type): Add first_overlay_section.
* ldlang.c (lang_add_section): Adjust switch statement.
(map_input_to_output_sections): Likewise.
(lang_size_sections_1): Always set last_os for first overlay section.
(lang_leave_overlay): Set sectype to first_overlay_section.
2019-07-08 Alan Modra <amodra@gmail.com>
* testsuite/ld-powerpc/callstub-1.d: Pass -melf64ppc to ld.

9
ld/ldlang.c
View File

@ -2579,6 +2579,7 @@ lang_add_section (lang_statement_list_type *ptr,
{
case normal_section:
case overlay_section:
case first_overlay_section:
break;
case noalloc_section:
flags &= ~SEC_ALLOC;
@ -3846,6 +3847,7 @@ map_input_to_output_sections
{
case normal_section:
case overlay_section:
case first_overlay_section:
break;
case noalloc_section:
flags = SEC_HAS_CONTENTS;
@ -5493,13 +5495,14 @@ lang_size_sections_1
important, if an orphan section is placed after an
otherwise empty output section that has an explicit lma
set, we want that lma reflected in the orphans lma. */
if (!IGNORE_SECTION (os->bfd_section)
if (((!IGNORE_SECTION (os->bfd_section)
&& (os->bfd_section->size != 0
|| (r->last_os == NULL
&& os->bfd_section->vma != os->bfd_section->lma)
|| (r->last_os != NULL
&& dot >= (r->last_os->output_section_statement
.bfd_section->vma)))
.bfd_section->vma))))
|| os->sectype == first_overlay_section)
&& os->lma_region == NULL
&& !bfd_link_relocatable (&link_info))
r->last_os = s;
@ -8292,7 +8295,7 @@ lang_leave_overlay (etree_type *lma_expr,
if (l->next == 0)
{
l->os->load_base = lma_expr;
l->os->sectype = normal_section;
l->os->sectype = first_overlay_section;
}
if (phdrs != NULL && l->os->phdrs == NULL)
l->os->phdrs = phdrs;

1
ld/ldlang.h
View File

@ -116,6 +116,7 @@ typedef struct lang_output_statement_struct
enum section_type
{
normal_section,
first_overlay_section,
overlay_section,
noload_section,
noalloc_section