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bfd/

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PR ld/11304
	* elf.c (_bfd_elf_init_private_section_data): Rename need_group
	to final_link and invert.  For final link allow some flags to
	differ.  Don't specially allow flags to be all zero.
ld/
	* ldlang.c (init_os): Remove isec param.  Don't check for
	bfd_section already set or call bfd_init_private_section_data
	here.
	(exp_init_os): Update init_os call.
	(lang_add_section): Tidy.  Really don't set SEC_LINK_ONCE
	flags.  Call bfd_init_private_section_data here.
	(map_input_to_output_sections): Tidy.  Update init_os calls.
	Use os->sectype to select sec flags for lang_data_statement.
This commit is contained in:
Alan Modra 2010-02-25 03:49:15 +00:00
parent 63d0fa4e9e
commit dfa7b0b817
4 changed files with 162 additions and 140 deletions
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7
bfd/ChangeLog
View File

@ -1,3 +1,10 @@
2010-02-25 Alan Modra <amodra@gmail.com>
PR ld/11304
* elf.c (_bfd_elf_init_private_section_data): Rename need_group
to final_link and invert. For final link allow some flags to
differ. Don't specially allow flags to be all zero.
2010-02-24 Alan Modra <amodra@gmail.com>
PR binutils/10858

17
bfd/elf.c
View File

@ -6056,18 +6056,21 @@ _bfd_elf_init_private_section_data (bfd *ibfd,
{
Elf_Internal_Shdr *ihdr, *ohdr;
bfd_boolean need_group = link_info == NULL || link_info->relocatable;
bfd_boolean final_link = link_info != NULL && !link_info->relocatable;
if (ibfd->xvec->flavour != bfd_target_elf_flavour
|| obfd->xvec->flavour != bfd_target_elf_flavour)
return TRUE;
/* Don't copy the output ELF section type from input if the
output BFD section flags have been set to something different.
elf_fake_sections will set ELF section type based on BFD
section flags. */
/* For objcopy and relocatable link, don't copy the output ELF
section type from input if the output BFD section flags have been
set to something different. For a final link allow some flags
that the linker clears to differ. */
if (elf_section_type (osec) == SHT_NULL
&& (osec->flags == isec->flags || !osec->flags))
&& (osec->flags == isec->flags
|| (final_link
&& ((osec->flags ^ isec->flags)
& ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES)) == 0)))
elf_section_type (osec) = elf_section_type (isec);
/* FIXME: Is this correct for all OS/PROC specific flags? */
@ -6078,7 +6081,7 @@ _bfd_elf_init_private_section_data (bfd *ibfd,
SHT_GROUP section will have its elf_next_in_group pointing back
to the input group members. Ignore linker created group section.
See elfNN_ia64_object_p in elfxx-ia64.c. */
if (need_group)
if (!final_link)
{
if (elf_sec_group (isec) == NULL
|| (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0)

12
ld/ChangeLog
View File

@ -1,3 +1,15 @@
2010-02-25 Alan Modra <amodra@gmail.com>
PR ld/11304
* ldlang.c (init_os): Remove isec param. Don't check for
bfd_section already set or call bfd_init_private_section_data
here.
(exp_init_os): Update init_os call.
(lang_add_section): Tidy. Really don't set SEC_LINK_ONCE
flags. Call bfd_init_private_section_data here.
(map_input_to_output_sections): Tidy. Update init_os calls.
Use os->sectype to select sec flags for lang_data_statement.
2010-02-23 Alan Modra <amodra@gmail.com>
PR ld/11304

266
ld/ldlang.c
View File

@ -2048,12 +2048,8 @@ sort_def_symbol (struct bfd_link_hash_entry *hash_entry,
/* Initialize an output section. */
static void
init_os (lang_output_section_statement_type *s, asection *isec,
flagword flags)
init_os (lang_output_section_statement_type *s, flagword flags)
{
if (s->bfd_section != NULL)
return;
if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME);
@ -2089,11 +2085,6 @@ init_os (lang_output_section_statement_type *s, asection *isec,
/* If supplied an alignment, set it. */
if (s->section_alignment != -1)
s->bfd_section->alignment_power = s->section_alignment;
if (isec)
bfd_init_private_section_data (isec->owner, isec,
link_info.output_bfd, s->bfd_section,
&link_info);
}
/* Make sure that all output sections mentioned in an expression are
@ -2139,7 +2130,7 @@ exp_init_os (etree_type *exp)
os = lang_output_section_find (exp->name.name);
if (os != NULL && os->bfd_section == NULL)
init_os (os, NULL, 0);
init_os (os, 0);
}
}
break;
@ -2183,6 +2174,7 @@ lang_add_section (lang_statement_list_type *ptr,
{
flagword flags = section->flags;
bfd_boolean discard;
lang_input_section_type *new_section;
/* Discard sections marked with SEC_EXCLUDE. */
discard = (flags & SEC_EXCLUDE) != 0;
@ -2208,109 +2200,105 @@ lang_add_section (lang_statement_list_type *ptr,
return;
}
if (section->output_section == NULL)
if (section->output_section != NULL)
return;
/* We don't copy the SEC_NEVER_LOAD flag from an input section
to an output section, because we want to be able to include a
SEC_NEVER_LOAD section in the middle of an otherwise loaded
section (I don't know why we want to do this, but we do).
build_link_order in ldwrite.c handles this case by turning
the embedded SEC_NEVER_LOAD section into a fill. */
flags &= ~ SEC_NEVER_LOAD;
/* If final link, don't copy the SEC_LINK_ONCE flags, they've
already been processed. One reason to do this is that on pe
format targets, .text$foo sections go into .text and it's odd
to see .text with SEC_LINK_ONCE set. */
if (!link_info.relocatable)
flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
switch (output->sectype)
{
bfd_boolean first;
lang_input_section_type *new_section;
case normal_section:
case overlay_section:
break;
case noalloc_section:
flags &= ~SEC_ALLOC;
break;
case noload_section:
flags &= ~SEC_LOAD;
flags |= SEC_NEVER_LOAD;
break;
}
/* We don't copy the SEC_NEVER_LOAD flag from an input section
to an output section, because we want to be able to include a
SEC_NEVER_LOAD section in the middle of an otherwise loaded
section (I don't know why we want to do this, but we do).
build_link_order in ldwrite.c handles this case by turning
the embedded SEC_NEVER_LOAD section into a fill. */
flags &= ~ SEC_NEVER_LOAD;
if (output->bfd_section == NULL)
init_os (output, flags);
switch (output->sectype)
{
case normal_section:
case overlay_section:
break;
case noalloc_section:
flags &= ~SEC_ALLOC;
break;
case noload_section:
flags &= ~SEC_LOAD;
flags |= SEC_NEVER_LOAD;
break;
}
/* If SEC_READONLY is not set in the input section, then clear
it from the output section. */
output->bfd_section->flags &= flags | ~SEC_READONLY;
if (output->bfd_section == NULL)
init_os (output, section, flags);
first = ! output->bfd_section->linker_has_input;
output->bfd_section->linker_has_input = 1;
if (!link_info.relocatable
&& !stripped_excluded_sections)
{
asection *s = output->bfd_section->map_tail.s;
output->bfd_section->map_tail.s = section;
section->map_head.s = NULL;
section->map_tail.s = s;
if (s != NULL)
s->map_head.s = section;
else
output->bfd_section->map_head.s = section;
}
/* Add a section reference to the list. */
new_section = new_stat (lang_input_section, ptr);
new_section->section = section;
section->output_section = output->bfd_section;
/* If final link, don't copy the SEC_LINK_ONCE flags, they've
already been processed. One reason to do this is that on pe
format targets, .text$foo sections go into .text and it's odd
to see .text with SEC_LINK_ONCE set. */
if (! link_info.relocatable)
flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
/* If this is not the first input section, and the SEC_READONLY
flag is not currently set, then don't set it just because the
input section has it set. */
if (! first && (output->bfd_section->flags & SEC_READONLY) == 0)
flags &= ~ SEC_READONLY;
if (output->bfd_section->linker_has_input)
{
/* Only set SEC_READONLY flag on the first input section. */
flags &= ~ SEC_READONLY;
/* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */
if (! first
&& ((output->bfd_section->flags & (SEC_MERGE | SEC_STRINGS))
!= (flags & (SEC_MERGE | SEC_STRINGS))
|| ((flags & SEC_MERGE)
&& output->bfd_section->entsize != section->entsize)))
if ((output->bfd_section->flags & (SEC_MERGE | SEC_STRINGS))
!= (flags & (SEC_MERGE | SEC_STRINGS))
|| ((flags & SEC_MERGE) != 0
&& output->bfd_section->entsize != section->entsize))
{
output->bfd_section->flags &= ~ (SEC_MERGE | SEC_STRINGS);
flags &= ~ (SEC_MERGE | SEC_STRINGS);
}
output->bfd_section->flags |= flags;
if (flags & SEC_MERGE)
output->bfd_section->entsize = section->entsize;
/* If SEC_READONLY is not set in the input section, then clear
it from the output section. */
if ((section->flags & SEC_READONLY) == 0)
output->bfd_section->flags &= ~SEC_READONLY;
/* Copy over SEC_SMALL_DATA. */
if (section->flags & SEC_SMALL_DATA)
output->bfd_section->flags |= SEC_SMALL_DATA;
if (section->alignment_power > output->bfd_section->alignment_power)
output->bfd_section->alignment_power = section->alignment_power;
if (bfd_get_arch (section->owner) == bfd_arch_tic54x
&& (section->flags & SEC_TIC54X_BLOCK) != 0)
{
output->bfd_section->flags |= SEC_TIC54X_BLOCK;
/* FIXME: This value should really be obtained from the bfd... */
output->block_value = 128;
}
}
output->bfd_section->flags |= flags;
if (!output->bfd_section->linker_has_input)
{
output->bfd_section->linker_has_input = 1;
/* This must happen after flags have been updated. The output
section may have been created before we saw its first input
section, eg. for a data statement. */
bfd_init_private_section_data (section->owner, section,
link_info.output_bfd,
output->bfd_section,
&link_info);
if ((flags & SEC_MERGE) != 0)
output->bfd_section->entsize = section->entsize;
}
if ((flags & SEC_TIC54X_BLOCK) != 0
&& bfd_get_arch (section->owner) == bfd_arch_tic54x)
{
/* FIXME: This value should really be obtained from the bfd... */
output->block_value = 128;
}
if (section->alignment_power > output->bfd_section->alignment_power)
output->bfd_section->alignment_power = section->alignment_power;
section->output_section = output->bfd_section;
if (!link_info.relocatable
&& !stripped_excluded_sections)
{
asection *s = output->bfd_section->map_tail.s;
output->bfd_section->map_tail.s = section;
section->map_head.s = NULL;
section->map_tail.s = s;
if (s != NULL)
s->map_head.s = section;
else
output->bfd_section->map_head.s = section;
}
/* Add a section reference to the list. */
new_section = new_stat (lang_input_section, ptr);
new_section->section = section;
}
/* Handle wildcard sorting. This returns the lang_input_section which
@ -3430,10 +3418,11 @@ map_input_to_output_sections
(lang_statement_union_type *s, const char *target,
lang_output_section_statement_type *os)
{
flagword flags;
for (; s != NULL; s = s->header.next)
{
lang_output_section_statement_type *tos;
flagword flags;
switch (s->header.type)
{
case lang_wild_statement_enum:
@ -3445,27 +3434,23 @@ map_input_to_output_sections
os);
break;
case lang_output_section_statement_enum:
if (s->output_section_statement.constraint)
tos = &s->output_section_statement;
if (tos->constraint != 0)
{
if (s->output_section_statement.constraint != ONLY_IF_RW
&& s->output_section_statement.constraint != ONLY_IF_RO)
if (tos->constraint != ONLY_IF_RW
&& tos->constraint != ONLY_IF_RO)
break;
s->output_section_statement.all_input_readonly = TRUE;
check_input_sections (s->output_section_statement.children.head,
&s->output_section_statement);
if ((s->output_section_statement.all_input_readonly
&& s->output_section_statement.constraint == ONLY_IF_RW)
|| (!s->output_section_statement.all_input_readonly
&& s->output_section_statement.constraint == ONLY_IF_RO))
tos->all_input_readonly = TRUE;
check_input_sections (tos->children.head, tos);
if (tos->all_input_readonly != (tos->constraint == ONLY_IF_RO))
{
s->output_section_statement.constraint = -1;
tos->constraint = -1;
break;
}
}
map_input_to_output_sections (s->output_section_statement.children.head,
map_input_to_output_sections (tos->children.head,
target,
&s->output_section_statement);
tos);
break;
case lang_output_statement_enum:
break;
@ -3481,13 +3466,23 @@ map_input_to_output_sections
/* Make sure that any sections mentioned in the expression
are initialized. */
exp_init_os (s->data_statement.exp);
flags = SEC_HAS_CONTENTS;
/* The output section gets contents, and then we inspect for
any flags set in the input script which override any ALLOC. */
if (!(os->flags & SEC_NEVER_LOAD))
flags |= SEC_ALLOC | SEC_LOAD;
/* The output section gets CONTENTS, and usually ALLOC and
LOAD, but the latter two may be overridden by the script. */
flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD;
switch (os->sectype)
{
case normal_section:
case overlay_section:
break;
case noalloc_section:
flags = SEC_HAS_CONTENTS;
break;
case noload_section:
flags = SEC_HAS_CONTENTS | SEC_NEVER_LOAD;
break;
}
if (os->bfd_section == NULL)
init_os (os, NULL, flags);
init_os (os, flags);
else
os->bfd_section->flags |= flags;
break;
@ -3499,11 +3494,11 @@ map_input_to_output_sections
case lang_padding_statement_enum:
case lang_input_statement_enum:
if (os != NULL && os->bfd_section == NULL)
init_os (os, NULL, 0);
init_os (os, 0);
break;
case lang_assignment_statement_enum:
if (os != NULL && os->bfd_section == NULL)
init_os (os, NULL, 0);
init_os (os, 0);
/* Make sure that any sections mentioned in the assignment
are initialized. */
@ -3522,13 +3517,18 @@ map_input_to_output_sections
if (!s->address_statement.segment
|| !s->address_statement.segment->used)
{
lang_output_section_statement_type *aos
= (lang_output_section_statement_lookup
(s->address_statement.section_name, 0, TRUE));
const char *name = s->address_statement.section_name;
if (aos->bfd_section == NULL)
init_os (aos, NULL, 0);
aos->addr_tree = s->address_statement.address;
/* Create the output section statement here so that
orphans with a set address will be placed after other
script sections. If we let the orphan placement code
place them in amongst other sections then the address
will affect following script sections, which is
likely to surprise naive users. */
tos = lang_output_section_statement_lookup (name, 0, TRUE);
tos->addr_tree = s->address_statement.address;
if (tos->bfd_section == NULL)
init_os (tos, 0);
}
break;
case lang_insert_statement_enum: