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bfd/

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* elf.c (_bfd_elf_fixup_group_sections): New function, split out from..
	(_bfd_elf_copy_private_header_data): ..here.
	* elflink.c (_bfd_elf_size_group_sections): New function.
	(bfd_elf_size_dynamic_sections): Call it.
	* elf-bfd.h (_bfd_elf_size_group_sections): Declare.
	(_bfd_elf_fixup_group_sections): Declare.
ld/
	* ldlang.c (unique_section_p): Add os param.  Allow group
	sections to match /DISCARD/.  Update all callers.
	* emultempl/genelf.em (gld${EMULATION_NAME}_before_allocation): New.
	(LDEMUL_BEFORE_ALLOCATION): Define.
ld/testsuite/
	* ld-elf/group.ld: Discard .dropme sections.
	* ld-elf/group10.d, * ld-elf/group10.s: New test.
This commit is contained in:
Alan Modra
2010-02-19 01:47:16 +00:00
parent 220453ec97
commit d0bf826b37
11 changed files with 167 additions and 44 deletions
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37
ld/ldlang.c
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@@ -195,7 +195,8 @@ input_statement_is_archive_path (const char *file_spec, char *sep,
}
static bfd_boolean
unique_section_p (const asection *sec)
unique_section_p (const asection *sec,
const lang_output_section_statement_type *os)
{
struct unique_sections *unam;
const char *secnam;
@@ -203,7 +204,8 @@ unique_section_p (const asection *sec)
if (link_info.relocatable
&& sec->owner != NULL
&& bfd_is_group_section (sec->owner, sec))
return TRUE;
return !(os != NULL
&& strcmp (os->name, DISCARD_SECTION_NAME) == 0);
secnam = sec->name;
for (unam = unique_section_list; unam; unam = unam->next)
@@ -445,12 +447,15 @@ output_section_callback_fast (lang_wild_statement_type *ptr,
struct wildcard_list *sec,
asection *section,
lang_input_statement_type *file,
void *output ATTRIBUTE_UNUSED)
void *output)
{
lang_section_bst_type *node;
lang_section_bst_type **tree;
lang_output_section_statement_type *os;
if (unique_section_p (section))
os = (lang_output_section_statement_type *) output;
if (unique_section_p (section, os))
return;
node = (lang_section_bst_type *) xmalloc (sizeof (lang_section_bst_type));
@@ -2415,9 +2420,12 @@ output_section_callback (lang_wild_statement_type *ptr,
void *output)
{
lang_statement_union_type *before;
lang_output_section_statement_type *os;
os = (lang_output_section_statement_type *) output;
/* Exclude sections that match UNIQUE_SECTION_LIST. */
if (unique_section_p (section))
if (unique_section_p (section, os))
return;
before = wild_sort (ptr, sec, file, section);
@@ -2428,16 +2436,14 @@ output_section_callback (lang_wild_statement_type *ptr,
of the current list. */
if (before == NULL)
lang_add_section (&ptr->children, section,
(lang_output_section_statement_type *) output);
lang_add_section (&ptr->children, section, os);
else
{
lang_statement_list_type list;
lang_statement_union_type **pp;
lang_list_init (&list);
lang_add_section (&list, section,
(lang_output_section_statement_type *) output);
lang_add_section (&list, section, os);
/* If we are discarding the section, LIST.HEAD will
be NULL. */
@@ -2464,14 +2470,18 @@ check_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED,
struct wildcard_list *sec ATTRIBUTE_UNUSED,
asection *section,
lang_input_statement_type *file ATTRIBUTE_UNUSED,
void *data)
void *output)
{
lang_output_section_statement_type *os;
os = (lang_output_section_statement_type *) output;
/* Exclude sections that match UNIQUE_SECTION_LIST. */
if (unique_section_p (section))
if (unique_section_p (section, os))
return;
if (section->output_section == NULL && (section->flags & SEC_READONLY) == 0)
((lang_output_section_statement_type *) data)->all_input_readonly = FALSE;
os->all_input_readonly = FALSE;
}
/* This is passed a file name which must have been seen already and
@@ -5848,7 +5858,8 @@ lang_place_orphans (void)
const char *name = s->name;
int constraint = 0;
if (config.unique_orphan_sections || unique_section_p (s))
if (config.unique_orphan_sections
|| unique_section_p (s, NULL))
constraint = SPECIAL;
if (!ldemul_place_orphan (s, name, constraint))