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* ldlang.h (lang_output_section_statement_type): Add prev.

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* ldlang.c (output_statement_newfunc): Set os.prev.
	(lang_insert_orphan): Likewise.
	(output_prev_sec_find): Use os.prev.
This commit is contained in:
Alan Modra
2005-12-24 07:48:30 +00:00
parent 3555e8e589
commit 218868ba41
3 changed files with 23 additions and 7 deletions
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22
ld/ldlang.c
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@@ -912,6 +912,14 @@ output_statement_newfunc (struct bfd_hash_entry *entry,
(lang_statement_union_type *) &ret->os,
&ret->os.header.next);
/* For every output section statement added to the list, except the
first one, lang_output_section_statement.tail points to the "next"
field of the last element of the list. */
if (lang_output_section_statement.head != NULL)
ret->os.prev = (lang_output_section_statement_type *)
((char *) lang_output_section_statement.tail
- offsetof (lang_output_section_statement_type, next));
/* GCC's strict aliasing rules prevent us from just casting the
address, so we store the pointer in a variable and cast that
instead. */
@@ -1290,20 +1298,15 @@ lang_output_section_find_by_flags (const asection *sec,
static asection *
output_prev_sec_find (lang_output_section_statement_type *os)
{
asection *s = (asection *) NULL;
lang_output_section_statement_type *lookup;
for (lookup = &lang_output_section_statement.head->output_section_statement;
lookup != NULL;
lookup = lookup->next)
for (lookup = os->prev; lookup != NULL; lookup = lookup->prev)
{
if (lookup->constraint == -1)
continue;
if (lookup == os)
return s;
if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
s = lookup->bfd_section;
return lookup->bfd_section;
}
return NULL;
@@ -1544,7 +1547,12 @@ lang_insert_orphan (asection *s,
/* Do the same for the list of output section statements. */
newly_added_os = *os_tail;
*os_tail = NULL;
newly_added_os->prev = (lang_output_section_statement_type *)
((char *) place->os_tail
- offsetof (lang_output_section_statement_type, next));
newly_added_os->next = *place->os_tail;
if (newly_added_os->next != NULL)
newly_added_os->next->prev = newly_added_os;
*place->os_tail = newly_added_os;
place->os_tail = &newly_added_os->next;