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bfd/

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2005-05-02  H.J. Lu  <hongjiu.lu@intel.com>

	* bfd.c (bfd): Remove section_tail and add section_last.
	(bfd_preserve): Likewise.
	(bfd_preserve_save): Likewise.
	(bfd_preserve_restore): Likewise.
	* opncls.c (_bfd_new_bfd): Likewise.

	* coffcode.h (coff_compute_section_file_positions): Updated.
	(coff_compute_section_file_positions): Likewise.
	* elf.c (assign_section_numbers): Likewise.
	* elf32-i370.c (i370_elf_size_dynamic_sections): Likewise.
	* elf64-mmix.c (mmix_elf_final_link): Likewise.
	* elfxx-ia64.c (elfNN_ia64_object_p): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_link_hash_table_create): Likewise.
	* sunos.c (sunos_add_dynamic_symbols): Likewise.
	* xcofflink.c (_bfd_xcoff_bfd_final_link): Likewise.

	* ecoff.c (bfd_debug_section): Initialize prev.

	* section.c (bfd_section): Add prev.
	(bfd_section_list_remove): Updated.
	(bfd_section_list_append): New.
	(bfd_section_list_insert_after): New.
	(bfd_section_list_insert_before): New.
	(bfd_section_list_insert): Removed.
	(bfd_section_removed_from_list): Updated.
	(STD_SECTION): Initialize prev.
	(bfd_section_init): Updated.
	(bfd_section_list_clear): Updated.

	* bfd-in2.h: Regenerated.

gas/

2005-05-02  H.J. Lu  <hongjiu.lu@intel.com>

	* write.c (write_object_file): Use bfd_section_double_list_remove
	to remove sections.

ld/

2005-05-02  H.J. Lu  <hongjiu.lu@intel.com>

	* emultempl/elf32.em (gld${EMULATION_NAME}_strip_empty_section):
	Updated for bfd_section_list_remove change.
	* ldlang.c (lang_insert_orphan): Likewise.
	(strip_excluded_output_sections): Likewise.
	(sort_sections_by_lma): New.
	(lang_check_section_addresses): Sort the sections before
	checking addresses.
This commit is contained in:
H.J. Lu 2005-05-03 01:05:03 +00:00
parent 3c95e6af3b
commit 5daa8fe797
19 changed files with 328 additions and 193 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
bfd/ChangeLog
View file

@ -1,3 +1,36 @@
2005-05-02 H.J. Lu <hongjiu.lu@intel.com>
* bfd.c (bfd): Remove section_tail and add section_last.
(bfd_preserve): Likewise.
(bfd_preserve_save): Likewise.
(bfd_preserve_restore): Likewise.
* opncls.c (_bfd_new_bfd): Likewise.
* coffcode.h (coff_compute_section_file_positions): Updated.
(coff_compute_section_file_positions): Likewise.
* elf.c (assign_section_numbers): Likewise.
* elf32-i370.c (i370_elf_size_dynamic_sections): Likewise.
* elf64-mmix.c (mmix_elf_final_link): Likewise.
* elfxx-ia64.c (elfNN_ia64_object_p): Likewise.
* elfxx-mips.c (_bfd_mips_elf_link_hash_table_create): Likewise.
* sunos.c (sunos_add_dynamic_symbols): Likewise.
* xcofflink.c (_bfd_xcoff_bfd_final_link): Likewise.
* ecoff.c (bfd_debug_section): Initialize prev.
* section.c (bfd_section): Add prev.
(bfd_section_list_remove): Updated.
(bfd_section_list_append): New.
(bfd_section_list_insert_after): New.
(bfd_section_list_insert_before): New.
(bfd_section_list_insert): Removed.
(bfd_section_removed_from_list): Updated.
(STD_SECTION): Initialize prev.
(bfd_section_init): Updated.
(bfd_section_list_clear): Updated.
* bfd-in2.h: Regenerated.
2005-05-02 H.J. Lu <hongjiu.lu@intel.com>
* elf.c (_bfd_elf_new_section_hook): Don't call

101
bfd/bfd-in2.h
View file

@ -1063,6 +1063,9 @@ typedef struct bfd_section
/* The next section in the list belonging to the BFD, or NULL. */
struct bfd_section *next;
/* The previous section in the list belonging to the BFD, or NULL. */
struct bfd_section *prev;
/* The field flags contains attributes of the section. Some
flags are read in from the object file, and some are
synthesized from other information. */
@ -1437,31 +1440,87 @@ extern const struct bfd_symbol * const bfd_ind_symbol;
/* Macros to handle insertion and deletion of a bfd's sections. These
only handle the list pointers, ie. do not adjust section_count,
target_index etc. */
#define bfd_section_list_remove(ABFD, PS) \
#define bfd_section_double_list_remove(ABFD, S) \
do \
{ \
asection **_ps = PS; \
asection *_s = *_ps; \
*_ps = _s->next; \
if (_s->next == NULL) \
(ABFD)->section_tail = _ps; \
asection *_s = S; \
asection *_next = _s->next; \
asection *_prev = _s->prev; \
if (_prev) \
_prev->next = _next; \
else \
_s->next = NULL; \
(ABFD)->sections = _next; \
if (_next) \
{ \
_next->prev = _prev; \
_s->next = NULL; \
} \
else \
(ABFD)->section_last = _prev; \
} \
while (0)
#define bfd_section_list_remove(ABFD, PS) \
bfd_section_double_list_remove ((ABFD), *(PS))
#define bfd_section_double_list_append(ABFD, S) \
do \
{ \
asection *_s = S; \
bfd *_abfd = ABFD; \
_s->next = NULL; \
if (_abfd->section_last) \
{ \
_s->prev = _abfd->section_last; \
_abfd->section_last->next = _s; \
} \
else \
_abfd->sections = _s; \
_abfd->section_last = _s; \
} \
while (0)
#define bfd_section_double_list_insert_after(ABFD, A, S) \
do \
{ \
asection *_a = A; \
asection *_s = S; \
if (_a) \
{ \
asection *_next = _a->next; \
_s->next = _next; \
_s->prev = _a; \
_a->next = _s; \
if (_next) \
_s->next->prev = _s; \
else \
(ABFD)->section_last = _s; \
} \
else \
bfd_section_double_list_append ((ABFD), (S)); \
} \
while (0)
#define bfd_section_double_list_insert_before(ABFD, B, S) \
do \
{ \
asection *_b = B; \
asection *_s = S; \
if (_b) \
{ \
asection *_prev = _b->prev; \
_s->prev = _prev; \
_s->next = _b; \
_b->prev = _s; \
if (_prev) \
_prev->next = _s; \
else \
(ABFD)->sections = _s; \
} \
else \
bfd_section_double_list_append ((ABFD), (S)); \
} \
while (0)
#define bfd_section_list_insert(ABFD, PS, S) \
do \
{ \
asection **_ps = PS; \
asection *_s = S; \
_s->next = *_ps; \
*_ps = _s; \
if (_s->next == NULL) \
(ABFD)->section_tail = &_s->next; \
} \
while (0)
bfd_section_double_list_insert_before ((ABFD), *(PS), (S))
#define bfd_section_removed_from_list(ABFD, S) \
((S)->next == NULL && &(S)->next != (ABFD)->section_tail)
((S)->next == NULL && (S) != (ABFD)->section_last)
void bfd_section_list_clear (bfd *);
@ -4026,8 +4085,8 @@ struct bfd
/* Pointer to linked list of sections. */
struct bfd_section *sections;
/* The place where we add to the section list. */
struct bfd_section **section_tail;
/* The last section on the section list. */
struct bfd_section *section_last;
/* The number of sections. */
unsigned int section_count;
@ -4287,7 +4346,7 @@ struct bfd_preserve
flagword flags;
const struct bfd_arch_info *arch_info;
struct bfd_section *sections;
struct bfd_section **section_tail;
struct bfd_section *section_last;
unsigned int section_count;
struct bfd_hash_table section_htab;
};

12
bfd/bfd.c
View file

@ -111,8 +111,8 @@ CODE_FRAGMENT
. {* Pointer to linked list of sections. *}
. struct bfd_section *sections;
.
. {* The place where we add to the section list. *}
. struct bfd_section **section_tail;
. {* The last section on the section list. *}
. struct bfd_section *section_last;
.
. {* The number of sections. *}
. unsigned int section_count;
@ -1390,7 +1390,7 @@ CODE_FRAGMENT
. flagword flags;
. const struct bfd_arch_info *arch_info;
. struct bfd_section *sections;
. struct bfd_section **section_tail;
. struct bfd_section *section_last;
. unsigned int section_count;
. struct bfd_hash_table section_htab;
.};
@ -1424,7 +1424,7 @@ bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve)
preserve->arch_info = abfd->arch_info;
preserve->flags = abfd->flags;
preserve->sections = abfd->sections;
preserve->section_tail = abfd->section_tail;
preserve->section_last = abfd->section_last;
preserve->section_count = abfd->section_count;
preserve->section_htab = abfd->section_htab;
@ -1435,7 +1435,7 @@ bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve)
abfd->arch_info = &bfd_default_arch_struct;
abfd->flags &= BFD_IN_MEMORY;
abfd->sections = NULL;
abfd->section_tail = &abfd->sections;
abfd->section_last = NULL;
abfd->section_count = 0;
return TRUE;
@ -1465,7 +1465,7 @@ bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve)
abfd->flags = preserve->flags;
abfd->section_htab = preserve->section_htab;
abfd->sections = preserve->sections;
abfd->section_tail = preserve->section_tail;
abfd->section_last = preserve->section_last;
abfd->section_count = preserve->section_count;
/* bfd_release frees all memory more recently bfd_alloc'd than

17
bfd/coffcode.h
View file

@ -1717,7 +1717,6 @@ coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr)
{
struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
asection *real_sec;
asection **ps;
if ((hdr->s_flags & STYP_OVRFLO) == 0)
return;
@ -1729,14 +1728,10 @@ coff_set_alignment_hook (bfd *abfd, asection *section, void * scnhdr)
real_sec->reloc_count = hdr->s_paddr;
real_sec->lineno_count = hdr->s_vaddr;
for (ps = &abfd->sections; *ps != NULL; ps = &(*ps)->next)
if (!bfd_section_removed_from_list (abfd, section))
{
if (*ps == section)
{
bfd_section_list_remove (abfd, ps);
--abfd->section_count;
break;
}
bfd_section_list_remove (abfd, section);
--abfd->section_count;
}
}
@ -3033,11 +3028,12 @@ coff_compute_section_file_positions (bfd * abfd)
/* Rethread the linked list into sorted order; at the same time,
assign target_index values. */
target_index = 1;
abfd->sections = section_list[0];
abfd->sections = NULL;
abfd->section_last = NULL;
for (i = 0; i < count; i++)
{
current = section_list[i];
current->next = section_list[i + 1];
bfd_section_list_append (abfd, current);
/* Later, if the section has zero size, we'll be throwing it
away, so we don't want to number it now. Note that having
@ -3056,7 +3052,6 @@ coff_compute_section_file_positions (bfd * abfd)
else
current->target_index = target_index++;
}
abfd->section_tail = &current->next;
free (section_list);
}

4
bfd/ecoff.c
View file

@ -52,8 +52,8 @@
/* This stuff is somewhat copied from coffcode.h. */
static asection bfd_debug_section =
{
/* name, id, index, next, flags, user_set_vma, */
"*DEBUG*", 0, 0, NULL, 0, 0,
/* name, id, index, next, prev, flags, user_set_vma, */
"*DEBUG*", 0, 0, NULL, NULL, 0, 0,
/* linker_mark, linker_has_input, gc_mark, segment_mark, */
0, 0, 0, 0,
/* sec_info_type, use_rela_p, has_tls_reloc, has_gp_reloc, */

15
bfd/elf.c
View file

@ -2762,22 +2762,21 @@ assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
/* SHT_GROUP sections are in relocatable files only. */
if (link_info == NULL || link_info->relocatable)
{
asection **secp;
asection *n;
/* Put SHT_GROUP sections first. */
secp = &abfd->sections;
while (*secp)
for (sec = abfd->sections; sec; sec = n)
{
d = elf_section_data (*secp);
d = elf_section_data (sec);
n = sec->next;
if (d->this_hdr.sh_type == SHT_GROUP)
{
if ((*secp)->flags & SEC_LINKER_CREATED)
if (sec->flags & SEC_LINKER_CREATED)
{
/* Remove the linker created SHT_GROUP sections. */
bfd_section_list_remove (abfd, secp);
bfd_section_list_remove (abfd, sec);
abfd->section_count--;
continue;
}
else
{
@ -2786,8 +2785,6 @@ assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
d->this_idx = section_number++;
}
}
secp = &(*secp)->next;
}
}

16
bfd/elf32-i370.c
View file

@ -756,18 +756,12 @@ i370_elf_size_dynamic_sections (output_bfd, info)
if (strip)
{
asection **spp;
for (spp = &s->output_section->owner->sections;
*spp != NULL;
spp = &(*spp)->next)
if (!bfd_section_removed_from_list (s->output_section->owner,
s->output_section))
{
if (*spp == s->output_section)
{
bfd_section_list_remove (s->output_section->owner, spp);
--s->output_section->owner->section_count;
break;
}
bfd_section_list_remove (s->output_section->owner,
s->output_section);
--s->output_section->owner->section_count;
}
continue;
}

7
bfd/elf64-mmix.c
View file

@ -2249,7 +2249,6 @@ mmix_elf_final_link (abfd, info)
/* We never output a register section, though we create one for
temporary measures. Check that nobody entered contents into it. */
asection *reg_section;
asection **secpp;
reg_section = bfd_get_section_by_name (abfd, MMIX_REG_SECTION_NAME);
@ -2260,11 +2259,7 @@ mmix_elf_final_link (abfd, info)
_bfd_abort (__FILE__, __LINE__, _("Register section has contents\n"));
/* Really remove the section. */
for (secpp = &abfd->sections;
*secpp != reg_section;
secpp = &(*secpp)->next)
;
bfd_section_list_remove (abfd, secpp);
bfd_section_list_remove (abfd, reg_section);
--abfd->section_count;
}

8
bfd/elfxx-ia64.c
View file

@ -4885,7 +4885,6 @@ static bfd_boolean
elfNN_ia64_object_p (bfd *abfd)
{
asection *sec;
asection **tail;
asection *group, *unwi, *unw;
flagword flags;
const char *name;
@ -4926,8 +4925,6 @@ elfNN_ia64_object_p (bfd *abfd)
strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
unw = bfd_get_section_by_name (abfd, unw_name);
tail = abfd->section_tail;
/* We need to create a fake group section for it and its
unwind sections. */
group = bfd_make_section_anyway (abfd, name);
@ -4936,9 +4933,8 @@ elfNN_ia64_object_p (bfd *abfd)
return FALSE;
/* Move the fake group section to the beginning. */
BFD_ASSERT (*tail == group);
bfd_section_list_remove (abfd, tail);
bfd_section_list_insert (abfd, &abfd->sections, group);
bfd_section_list_remove (abfd, group);
bfd_section_list_insert_before (abfd, abfd->sections, group);
elf_next_in_group (group) = sec;

7
bfd/elfxx-mips.c
View file

@ -8870,7 +8870,6 @@ _bfd_mips_elf_link_hash_table_create (bfd *abfd)
bfd_boolean
_bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info)
{
asection **secpp;
asection *o;
struct bfd_link_order *p;
asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
@ -9285,11 +9284,7 @@ _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info)
o->link_order_head = NULL;
/* Really remove the section. */
for (secpp = &abfd->sections;
*secpp != o;
secpp = &(*secpp)->next)
;
bfd_section_list_remove (abfd, secpp);
bfd_section_list_remove (abfd, o);
--abfd->section_count;
continue;

2
bfd/opncls.c
View file

@ -77,7 +77,7 @@ _bfd_new_bfd (void)
return NULL;
}
nbfd->sections = NULL;
nbfd->section_tail = &nbfd->sections;
nbfd->section_last = NULL;
nbfd->format = bfd_unknown;
nbfd->my_archive = NULL;
nbfd->origin = 0;

94
bfd/section.c
View file

@ -164,6 +164,9 @@ CODE_FRAGMENT
. {* The next section in the list belonging to the BFD, or NULL. *}
. struct bfd_section *next;
.
. {* The previous section in the list belonging to the BFD, or NULL. *}
. struct bfd_section *prev;
.
. {* The field flags contains attributes of the section. Some
. flags are read in from the object file, and some are
. synthesized from other information. *}
@ -538,31 +541,73 @@ CODE_FRAGMENT
.{* Macros to handle insertion and deletion of a bfd's sections. These
. only handle the list pointers, ie. do not adjust section_count,
. target_index etc. *}
.#define bfd_section_list_remove(ABFD, PS) \
.#define bfd_section_list_remove(ABFD, S) \
. do \
. { \
. asection **_ps = PS; \
. asection *_s = *_ps; \
. *_ps = _s->next; \
. if (_s->next == NULL) \
. (ABFD)->section_tail = _ps; \
. else \
. _s->next = NULL; \
. } \
. while (0)
.#define bfd_section_list_insert(ABFD, PS, S) \
. do \
. { \
. asection **_ps = PS; \
. asection *_s = S; \
. _s->next = *_ps; \
. *_ps = _s; \
. if (_s->next == NULL) \
. (ABFD)->section_tail = &_s->next; \
. asection *_next = _s->next; \
. asection *_prev = _s->prev; \
. if (_prev) \
. _prev->next = _next; \
. else \
. (ABFD)->sections = _next; \
. if (_next) \
. { \
. _next->prev = _prev; \
. _s->next = NULL; \
. } \
. else \
. (ABFD)->section_last = _prev; \
. } \
. while (0)
.#define bfd_section_removed_from_list(ABFD, S) \
. ((S)->next == NULL && &(S)->next != (ABFD)->section_tail)
.#define bfd_section_list_append(ABFD, S) \
. do \
. { \
. asection *_s = S; \
. bfd *_abfd = ABFD; \
. _s->next = NULL; \
. if (_abfd->section_last) \
. { \
. _s->prev = _abfd->section_last; \
. _abfd->section_last->next = _s; \
. } \
. else \
. _abfd->sections = _s; \
. _abfd->section_last = _s; \
. } \
. while (0)
.#define bfd_section_list_insert_after(ABFD, A, S) \
. do \
. { \
. asection *_a = A; \
. asection *_s = S; \
. asection *_next = _a->next; \
. _s->next = _next; \
. _s->prev = _a; \
. _a->next = _s; \
. if (_next) \
. _s->next->prev = _s; \
. else \
. (ABFD)->section_last = _s; \
. } \
. while (0)
.#define bfd_section_list_insert_before(ABFD, B, S) \
. do \
. { \
. asection *_b = B; \
. asection *_s = S; \
. asection *_prev = _b->prev; \
. _s->prev = _prev; \
. _s->next = _b; \
. _b->prev = _s; \
. if (_prev) \
. _prev->next = _s; \
. else \
. (ABFD)->sections = _s; \
. } \
. while (0)
.#define bfd_section_removed_from_list(ABFD, S) \
. ((S)->next == NULL && (S) != (ABFD)->section_last)
.
*/
@ -592,8 +637,8 @@ static const asymbol global_syms[] =
#define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \
asection SEC = \
/* name, id, index, next, flags, user_set_vma, */ \
{ NAME, IDX, 0, NULL, FLAGS, 0, \
/* name, id, index, next, prev, flags, user_set_vma, */ \
{ NAME, IDX, 0, NULL, NULL, FLAGS, 0, \
\
/* linker_mark, linker_has_input, gc_mark, segment_mark, */ \
0, 0, 1, 0, \
@ -705,8 +750,7 @@ bfd_section_init (bfd *abfd, asection *newsect)
section_id++;
abfd->section_count++;
*abfd->section_tail = newsect;
abfd->section_tail = &newsect->next;
bfd_section_list_append (abfd, newsect);
return newsect;
}
@ -736,7 +780,7 @@ void
bfd_section_list_clear (bfd *abfd)
{
abfd->sections = NULL;
abfd->section_tail = &abfd->sections;
abfd->section_last = NULL;
abfd->section_count = 0;
memset (abfd->section_htab.table, 0,
abfd->section_htab.size * sizeof (struct bfd_hash_entry *));

17
bfd/sunos.c
View file

@ -832,7 +832,6 @@ sunos_add_dynamic_symbols (bfd *abfd,
bfd *dynobj;
struct sunos_dynamic_info *dinfo;
unsigned long need;
asection **ps;
/* Make sure we have all the required sections. */
if (info->hash->creator == abfd->xvec)
@ -856,12 +855,18 @@ sunos_add_dynamic_symbols (bfd *abfd,
want, because that one still implies that the section takes up
space in the output file. If this is the first object we have
seen, we must preserve the dynamic sections we just created. */
for (ps = &abfd->sections; *ps != NULL; )
if (abfd != dynobj)
abfd->sections = NULL;
else
{
if (abfd != dynobj || ((*ps)->flags & SEC_LINKER_CREATED) == 0)
bfd_section_list_remove (abfd, ps);
else
ps = &(*ps)->next;
asection *s, *n;
for (s = abfd->sections; s != NULL; s = n)
{
n = s->next;
if ((s->flags & SEC_LINKER_CREATED) == 0)
bfd_section_list_remove (abfd, s);
}
}
/* The native linker seems to just ignore dynamic objects when -r is

8
bfd/xcofflink.c
View file

@ -5454,20 +5454,18 @@ _bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
saw_contents = TRUE;
else
{
asection *n, **st;
asection *n;
/* Create a pad section and place it before the section
that needs padding. This requires unlinking and
relinking the bfd's section list. */
st = abfd->section_tail;
n = bfd_make_section_anyway (abfd, ".pad");
n->flags = SEC_HAS_CONTENTS;
n->alignment_power = 0;
BFD_ASSERT (*st == n);
bfd_section_list_remove (abfd, st);
bfd_section_list_insert (abfd, op, n);
bfd_section_list_remove (abfd, n);
bfd_section_list_insert_before (abfd, *op, n);
op = &n->next;
saw_contents = FALSE;

5
gas/ChangeLog
View file

@ -1,3 +1,8 @@
2005-05-02 H.J. Lu <hongjiu.lu@intel.com>
* write.c (write_object_file): Use bfd_section_double_list_remove
to remove sections.
2005-05-02 Daniel Jacobowitz <dan@codesourcery.com>
* doc/Makefile.am (gasver.texi): Correct quoting.

15
gas/write.c
View file

@ -1471,20 +1471,11 @@ write_object_file (void)
#ifdef BFD_ASSEMBLER
/* Remove the sections created by gas for its own purposes. */
{
asection **seclist;
int i;
seclist = &stdoutput->sections;
while (*seclist)
{
if (*seclist == reg_section || *seclist == expr_section)
{
bfd_section_list_remove (stdoutput, seclist);
stdoutput->section_count--;
}
else
seclist = &(*seclist)->next;
}
bfd_section_list_remove (stdoutput, reg_section);
bfd_section_list_remove (stdoutput, expr_section);
stdoutput->section_count -= 2;
i = 0;
bfd_map_over_sections (stdoutput, renumber_sections, &i);
}

10
ld/ChangeLog
View file

@ -1,3 +1,13 @@
2005-05-02 H.J. Lu <hongjiu.lu@intel.com>
* emultempl/elf32.em (gld${EMULATION_NAME}_strip_empty_section):
Updated for bfd_section_list_remove change.
* ldlang.c (lang_insert_orphan): Likewise.
(strip_excluded_output_sections): Likewise.
(sort_sections_by_lma): New.
(lang_check_section_addresses): Sort the sections before
checking addresses.
2005-04-29 Ralf Corsepius <ralf.corsepius@rtems.org>
* configure.tgt: Add h8300*-*-rtemscoff.

16
ld/emultempl/elf32.em
View file

@ -1542,17 +1542,13 @@ gld${EMULATION_NAME}_strip_empty_sections (void)
if (os == abs_output_section || os->constraint == -1)
continue;
s = os->bfd_section;
if (s != NULL && s->size == 0 && (s->flags & SEC_KEEP) == 0)
if (s != NULL
&& s->size == 0
&& (s->flags & SEC_KEEP) == 0
&& !bfd_section_removed_from_list (output_bfd, s))
{
asection **p;
for (p = &output_bfd->sections; *p; p = &(*p)->next)
if (*p == s)
{
bfd_section_list_remove (output_bfd, p);
output_bfd->section_count--;
break;
}
bfd_section_list_remove (output_bfd, s);
output_bfd->section_count--;
}
}
}

134
ld/ldlang.c
View file

@ -1202,7 +1202,6 @@ lang_insert_orphan (lang_input_statement_type *file,
etree_type *load_base;
lang_output_section_statement_type *os;
lang_output_section_statement_type **os_tail;
asection **bfd_tail;
/* Start building a list of statements for this section.
First save the current statement pointer. */
@ -1256,7 +1255,6 @@ lang_insert_orphan (lang_input_statement_type *file,
os_tail = ((lang_output_section_statement_type **)
lang_output_section_statement.tail);
bfd_tail = output_bfd->section_tail;
os = lang_enter_output_section_statement (secname, address, 0, NULL, NULL,
load_base, 0);
@ -1288,7 +1286,7 @@ lang_insert_orphan (lang_input_statement_type *file,
if (after != NULL && os->bfd_section != NULL)
{
asection *snew;
asection *snew, *as;
snew = os->bfd_section;
@ -1314,12 +1312,15 @@ lang_insert_orphan (lang_input_statement_type *file,
if (place->section == NULL)
place->section = &output_bfd->sections;
/* Unlink the section. */
ASSERT (*bfd_tail == snew);
bfd_section_list_remove (output_bfd, bfd_tail);
as = *place->section;
if (as != snew && as->prev != snew)
{
/* Unlink the section. */
bfd_section_list_remove (output_bfd, snew);
/* Now tack it back on in the right place. */
bfd_section_list_insert (output_bfd, place->section, snew);
/* Now tack it back on in the right place. */
bfd_section_list_insert_before (output_bfd, as, snew);
}
/* Save the end of this list. Further ophans of this type will
follow the one we've just added. */
@ -3044,17 +3045,12 @@ strip_excluded_output_sections (void)
s = os->bfd_section;
if (s != NULL && (s->flags & SEC_EXCLUDE) != 0)
{
asection **p;
os->bfd_section = NULL;
for (p = &output_bfd->sections; *p; p = &(*p)->next)
if (*p == s)
{
bfd_section_list_remove (output_bfd, p);
output_bfd->section_count--;
break;
}
if (!bfd_section_removed_from_list (output_bfd, s))
{
bfd_section_list_remove (output_bfd, s);
output_bfd->section_count--;
}
}
}
}
@ -3683,6 +3679,22 @@ size_input_section
return dot;
}
static int
sort_sections_by_lma (const void *arg1, const void *arg2)
{
const asection *sec1 = *(const asection **) arg1;
const asection *sec2 = *(const asection **) arg2;
if (bfd_section_lma (sec1->owner, sec1)
< bfd_section_lma (sec2->owner, sec2))
return -1;
else if (bfd_section_lma (sec1->owner, sec1)
> bfd_section_lma (sec2->owner, sec2))
return 1;
return 0;
}
#define IGNORE_SECTION(s) \
((s->flags & SEC_NEVER_LOAD) != 0 \
|| (s->flags & SEC_ALLOC) == 0 \
@ -3696,52 +3708,62 @@ size_input_section
static void
lang_check_section_addresses (void)
{
asection *s;
asection *s, *os;
asection **sections, **spp;
unsigned int count;
bfd_vma s_start;
bfd_vma s_end;
bfd_vma os_start;
bfd_vma os_end;
bfd_size_type amt;
if (bfd_count_sections (output_bfd) <= 1)
return;
amt = bfd_count_sections (output_bfd) * sizeof (asection *);
sections = xmalloc (amt);
/* Scan all sections in the output list. */
count = 0;
for (s = output_bfd->sections; s != NULL; s = s->next)
{
asection *os;
/* Ignore sections which are not loaded or which have no contents. */
/* Only consider loadable sections with real contents. */
if (IGNORE_SECTION (s) || s->size == 0)
continue;
/* Once we reach section 's' stop our seach. This prevents two
warning messages from being produced, one for 'section A overlaps
section B' and one for 'section B overlaps section A'. */
for (os = output_bfd->sections; os != s; os = os->next)
{
bfd_vma s_start;
bfd_vma s_end;
bfd_vma os_start;
bfd_vma os_end;
/* Only consider loadable sections with real contents. */
if (IGNORE_SECTION (os) || os->size == 0)
continue;
/* We must check the sections' LMA addresses not their
VMA addresses because overlay sections can have
overlapping VMAs but they must have distinct LMAs. */
s_start = bfd_section_lma (output_bfd, s);
os_start = bfd_section_lma (output_bfd, os);
s_end = s_start + TO_ADDR (s->size) - 1;
os_end = os_start + TO_ADDR (os->size) - 1;
/* Look for an overlap. */
if ((s_end < os_start) || (s_start > os_end))
continue;
einfo (
_("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
s->name, s_start, s_end, os->name, os_start, os_end);
/* Once we have found one overlap for this section,
stop looking for others. */
break;
}
sections[count] = s;
count++;
}
if (count <= 1)
return;
qsort (sections, (size_t) count, sizeof (asection *),
sort_sections_by_lma);
spp = sections;
s = *spp++;
s_start = bfd_section_lma (output_bfd, s);
s_end = s_start + TO_ADDR (s->size) - 1;
for (count--; count; count--)
{
/* We must check the sections' LMA addresses not their VMA
addresses because overlay sections can have overlapping VMAs
but they must have distinct LMAs. */
os = s;
os_start = s_start;
os_end = s_end;
s = *spp++;
s_start = bfd_section_lma (output_bfd, s);
s_end = s_start + TO_ADDR (s->size) - 1;
/* Look for an overlap. */
if (s_end >= os_start && s_start <= os_end)
einfo (_("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
s->name, s_start, s_end, os->name, os_start, os_end);
}
free (sections);
}
/* Make sure the new address is within the region. We explicitly permit the