Only allow allocated sections to contribute to the size of a region.

This commit is contained in:
Nick Clifton 1999-01-15 08:50:15 +00:00
parent 363e6264be
commit 02c548d743
2 changed files with 312 additions and 301 deletions

View File

@ -1,3 +1,9 @@
1999-01-15 Nick Clifton <nickc@cygnus.com>
* ldlang.c (lang_size_sections): Only update the current
address of a region if the section just placed into it is an
allocated section.
1999-01-12 Nick Clifton <nickc@cygnus.com>
* Makefile.am: Replace efr30.o with eelf32fr30.o.

View File

@ -2288,347 +2288,352 @@ lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
bfd_vma dot;
boolean relax;
{
/* Size up the sections from their constituent parts */
/* Size up the sections from their constituent parts. */
for (; s != (lang_statement_union_type *) NULL; s = s->next)
{
switch (s->header.type)
{
switch (s->header.type)
{
case lang_output_section_statement_enum:
{
bfd_vma after;
lang_output_section_statement_type *os = &s->output_section_statement;
case lang_output_section_statement_enum:
{
bfd_vma after;
lang_output_section_statement_type *os = &s->output_section_statement;
if (os->bfd_section == NULL)
/* This section was never actually created. */
break;
if (os->bfd_section == NULL)
{
/* This section was never actually created. */
break;
}
/* If this is a COFF shared library section, use the size and
address from the input section. FIXME: This is COFF
specific; it would be cleaner if there were some other way
to do this, but nothing simple comes to mind. */
if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
{
asection * input;
/* If this is a COFF shared library section, use the size and
address from the input section. FIXME: This is COFF
specific; it would be cleaner if there were some other way
to do this, but nothing simple comes to mind. */
if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
{
asection *input;
if (os->children.head == NULL
|| os->children.head->next != NULL
|| os->children.head->header.type != lang_input_section_enum)
einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
os->name);
if (os->children.head == NULL
|| os->children.head->next != NULL
|| os->children.head->header.type != lang_input_section_enum)
einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
os->name);
input = os->children.head->input_section.section;
bfd_set_section_vma (os->bfd_section->owner,
os->bfd_section,
bfd_section_vma (input->owner, input));
os->bfd_section->_raw_size = input->_raw_size;
break;
}
input = os->children.head->input_section.section;
bfd_set_section_vma (os->bfd_section->owner,
os->bfd_section,
bfd_section_vma (input->owner, input));
os->bfd_section->_raw_size = input->_raw_size;
break;
}
if (bfd_is_abs_section (os->bfd_section))
{
/* No matter what happens, an abs section starts at zero. */
ASSERT (os->bfd_section->vma == 0);
}
else
{
if (os->addr_tree == (etree_type *) NULL)
{
/* No address specified for this section, get one
from the region specification. */
if (os->region == (lang_memory_region_type *) NULL
|| (((bfd_get_section_flags (output_bfd, os->bfd_section)
& (SEC_ALLOC | SEC_LOAD)) != 0)
&& os->region->name[0] == '*'
&& strcmp (os->region->name, "*default*") == 0))
{
os->region = lang_memory_default (os->bfd_section);
}
if (bfd_is_abs_section (os->bfd_section))
{
/* No matter what happens, an abs section starts at zero */
ASSERT (os->bfd_section->vma == 0);
}
else
{
if (os->addr_tree == (etree_type *) NULL)
{
/* No address specified for this section, get one
from the region specification
*/
if (os->region == (lang_memory_region_type *) NULL
|| (((bfd_get_section_flags (output_bfd, os->bfd_section)
& (SEC_ALLOC | SEC_LOAD)) != 0)
&& os->region->name[0] == '*'
&& strcmp (os->region->name, "*default*") == 0))
{
os->region = lang_memory_default (os->bfd_section);
}
/* If a loadable section is using the default memory
region, and some non default memory regions were
defined, issue a warning. */
if ((bfd_get_section_flags (output_bfd, os->bfd_section)
& (SEC_ALLOC | SEC_LOAD)) != 0
&& ! link_info.relocateable
&& strcmp (os->region->name, "*default*") == 0
&& lang_memory_region_list != NULL
&& (strcmp (lang_memory_region_list->name, "*default*") != 0
|| lang_memory_region_list->next != NULL))
einfo (_("%P: warning: no memory region specified for section `%s'\n"),
bfd_get_section_name (output_bfd, os->bfd_section));
/* If a loadable section is using the default memory
region, and some non default memory regions were
defined, issue a warning. */
if ((bfd_get_section_flags (output_bfd, os->bfd_section)
& (SEC_ALLOC | SEC_LOAD)) != 0
&& ! link_info.relocateable
&& strcmp (os->region->name, "*default*") == 0
&& lang_memory_region_list != NULL
&& (strcmp (lang_memory_region_list->name, "*default*") != 0
|| lang_memory_region_list->next != NULL))
einfo (_("%P: warning: no memory region specified for section `%s'\n"),
bfd_get_section_name (output_bfd, os->bfd_section));
dot = os->region->current;
if (os->section_alignment == -1)
{
bfd_vma olddot;
dot = os->region->current;
if (os->section_alignment == -1)
{
bfd_vma olddot;
olddot = dot;
dot = align_power (dot, os->bfd_section->alignment_power);
olddot = dot;
dot = align_power (dot, os->bfd_section->alignment_power);
if (dot != olddot && config.warn_section_align)
einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
os->name, (unsigned int) (dot - olddot));
}
}
else
{
etree_value_type r;
if (dot != olddot && config.warn_section_align)
einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
os->name, (unsigned int) (dot - olddot));
}
}
else
{
etree_value_type r;
r = exp_fold_tree (os->addr_tree,
abs_output_section,
lang_allocating_phase_enum,
dot, &dot);
if (r.valid == false)
{
einfo (_("%F%S: non constant address expression for section %s\n"),
os->name);
}
dot = r.value + r.section->bfd_section->vma;
}
/* The section starts here */
/* First, align to what the section needs */
r = exp_fold_tree (os->addr_tree,
abs_output_section,
lang_allocating_phase_enum,
dot, &dot);
if (r.valid == false)
{
einfo (_("%F%S: non constant address expression for section %s\n"),
os->name);
}
dot = r.value + r.section->bfd_section->vma;
}
/* The section starts here.
First, align to what the section needs. */
if (os->section_alignment != -1)
dot = align_power (dot, os->section_alignment);
if (os->section_alignment != -1)
dot = align_power (dot, os->section_alignment);
bfd_set_section_vma (0, os->bfd_section, dot);
os->bfd_section->output_offset = 0;
}
bfd_set_section_vma (0, os->bfd_section, dot);
os->bfd_section->output_offset = 0;
}
(void) lang_size_sections (os->children.head, os, &os->children.head,
os->fill, dot, relax);
/* Ignore the size of the input sections, use the vma and size to */
/* align against */
(void) lang_size_sections (os->children.head, os, &os->children.head,
os->fill, dot, relax);
/* Ignore the size of the input sections, use the vma and size to
align against. */
after = ALIGN_N (os->bfd_section->vma +
os->bfd_section->_raw_size,
/* The coercion here is important, see ld.h. */
(bfd_vma) os->block_value);
after = ALIGN_N (os->bfd_section->vma +
os->bfd_section->_raw_size,
/* The coercion here is important, see ld.h. */
(bfd_vma) os->block_value);
if (bfd_is_abs_section (os->bfd_section))
ASSERT (after == os->bfd_section->vma);
else
os->bfd_section->_raw_size = after - os->bfd_section->vma;
dot = os->bfd_section->vma + os->bfd_section->_raw_size;
os->processed = true;
if (bfd_is_abs_section (os->bfd_section))
ASSERT (after == os->bfd_section->vma);
else
os->bfd_section->_raw_size = after - os->bfd_section->vma;
dot = os->bfd_section->vma + os->bfd_section->_raw_size;
os->processed = true;
/* Replace into region ? */
if (os->region != (lang_memory_region_type *) NULL)
{
os->region->current = dot;
/* Make sure this isn't silly. */
if (os->region->current < os->region->origin
|| (os->region->current - os->region->origin
> os->region->length))
{
if (os->addr_tree != (etree_type *) NULL)
{
einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
os->region->current,
os->bfd_section->owner,
os->bfd_section->name,
os->region->name);
}
else
{
einfo (_("%X%P: region %s is full (%B section %s)\n"),
os->region->name,
os->bfd_section->owner,
os->bfd_section->name);
}
/* Reset the region pointer. */
os->region->current = os->region->origin;
}
}
}
break;
/* Update dot in the region ?
We only do this if the section is going to be allocated,
since unallocated sections do not contribute to the region's
overall size in memory. */
if (os->region != (lang_memory_region_type *) NULL
&& bfd_get_section_flags (output_bfd, os->bfd_section) & SEC_ALLOC)
{
os->region->current = dot;
/* Make sure this isn't silly. */
if (os->region->current < os->region->origin
|| (os->region->current - os->region->origin
> os->region->length))
{
if (os->addr_tree != (etree_type *) NULL)
{
einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
os->region->current,
os->bfd_section->owner,
os->bfd_section->name,
os->region->name);
}
else
{
einfo (_("%X%P: region %s is full (%B section %s)\n"),
os->region->name,
os->bfd_section->owner,
os->bfd_section->name);
}
/* Reset the region pointer. */
os->region->current = os->region->origin;
}
}
}
break;
case lang_constructors_statement_enum:
dot = lang_size_sections (constructor_list.head,
output_section_statement,
&s->wild_statement.children.head,
fill,
dot, relax);
break;
case lang_constructors_statement_enum:
dot = lang_size_sections (constructor_list.head,
output_section_statement,
&s->wild_statement.children.head,
fill,
dot, relax);
break;
case lang_data_statement_enum:
{
unsigned int size = 0;
case lang_data_statement_enum:
{
unsigned int size = 0;
s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma;
s->data_statement.output_section =
output_section_statement->bfd_section;
s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma;
s->data_statement.output_section =
output_section_statement->bfd_section;
switch (s->data_statement.type)
{
case QUAD:
case SQUAD:
size = QUAD_SIZE;
break;
case LONG:
size = LONG_SIZE;
break;
case SHORT:
size = SHORT_SIZE;
break;
case BYTE:
size = BYTE_SIZE;
break;
}
switch (s->data_statement.type)
{
case QUAD:
case SQUAD:
size = QUAD_SIZE;
break;
case LONG:
size = LONG_SIZE;
break;
case SHORT:
size = SHORT_SIZE;
break;
case BYTE:
size = BYTE_SIZE;
break;
}
dot += size;
output_section_statement->bfd_section->_raw_size += size;
/* The output section gets contents, and then we inspect for
any flags set in the input script which override any ALLOC */
output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
if (!(output_section_statement->flags & SEC_NEVER_LOAD)) {
output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD;
}
}
break;
dot += size;
output_section_statement->bfd_section->_raw_size += size;
/* The output section gets contents, and then we inspect for
any flags set in the input script which override any ALLOC. */
output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
if (!(output_section_statement->flags & SEC_NEVER_LOAD)) {
output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD;
}
}
break;
case lang_reloc_statement_enum:
{
int size;
case lang_reloc_statement_enum:
{
int size;
s->reloc_statement.output_vma =
dot - output_section_statement->bfd_section->vma;
s->reloc_statement.output_section =
output_section_statement->bfd_section;
size = bfd_get_reloc_size (s->reloc_statement.howto);
dot += size;
output_section_statement->bfd_section->_raw_size += size;
}
break;
s->reloc_statement.output_vma =
dot - output_section_statement->bfd_section->vma;
s->reloc_statement.output_section =
output_section_statement->bfd_section;
size = bfd_get_reloc_size (s->reloc_statement.howto);
dot += size;
output_section_statement->bfd_section->_raw_size += size;
}
break;
case lang_wild_statement_enum:
case lang_wild_statement_enum:
dot = lang_size_sections (s->wild_statement.children.head,
output_section_statement,
&s->wild_statement.children.head,
dot = lang_size_sections (s->wild_statement.children.head,
output_section_statement,
&s->wild_statement.children.head,
fill, dot, relax);
fill, dot, relax);
break;
break;
case lang_object_symbols_statement_enum:
link_info.create_object_symbols_section =
output_section_statement->bfd_section;
break;
case lang_output_statement_enum:
case lang_target_statement_enum:
break;
case lang_input_section_enum:
{
asection *i;
i = (*prev)->input_section.section;
if (! relax)
case lang_object_symbols_statement_enum:
link_info.create_object_symbols_section =
output_section_statement->bfd_section;
break;
case lang_output_statement_enum:
case lang_target_statement_enum:
break;
case lang_input_section_enum:
{
if (i->_cooked_size == 0)
i->_cooked_size = i->_raw_size;
asection *i;
i = (*prev)->input_section.section;
if (! relax)
{
if (i->_cooked_size == 0)
i->_cooked_size = i->_raw_size;
}
else
{
boolean again;
if (! bfd_relax_section (i->owner, i, &link_info, &again))
einfo (_("%P%F: can't relax section: %E\n"));
if (again)
relax_again = true;
}
dot = size_input_section (prev,
output_section_statement,
output_section_statement->fill,
dot, relax);
}
else
break;
case lang_input_statement_enum:
break;
case lang_fill_statement_enum:
s->fill_statement.output_section = output_section_statement->bfd_section;
fill = s->fill_statement.fill;
break;
case lang_assignment_statement_enum:
{
boolean again;
bfd_vma newdot = dot;
if (! bfd_relax_section (i->owner, i, &link_info, &again))
einfo (_("%P%F: can't relax section: %E\n"));
if (again)
relax_again = true;
exp_fold_tree (s->assignment_statement.exp,
output_section_statement,
lang_allocating_phase_enum,
dot,
&newdot);
if (newdot != dot)
{
/* The assignment changed dot. Insert a pad. */
if (output_section_statement == abs_output_section)
{
/* If we don't have an output section, then just adjust
the default memory address. */
lang_memory_region_lookup ("*default*")->current = newdot;
}
else if (!relax)
{
lang_statement_union_type *new =
((lang_statement_union_type *)
stat_alloc (sizeof (lang_padding_statement_type)));
/* Link into existing chain. */
new->header.next = *prev;
*prev = new;
new->header.type = lang_padding_statement_enum;
new->padding_statement.output_section =
output_section_statement->bfd_section;
new->padding_statement.output_offset =
dot - output_section_statement->bfd_section->vma;
new->padding_statement.fill = fill;
new->padding_statement.size = newdot - dot;
output_section_statement->bfd_section->_raw_size +=
new->padding_statement.size;
}
dot = newdot;
}
}
dot = size_input_section (prev,
output_section_statement,
output_section_statement->fill,
dot, relax);
}
break;
case lang_input_statement_enum:
break;
case lang_fill_statement_enum:
s->fill_statement.output_section = output_section_statement->bfd_section;
break;
fill = s->fill_statement.fill;
break;
case lang_assignment_statement_enum:
{
bfd_vma newdot = dot;
case lang_padding_statement_enum:
/* If we are relaxing, and this is not the first pass, some
padding statements may have been inserted during previous
passes. We may have to move the padding statement to a new
location if dot has a different value at this point in this
pass than it did at this point in the previous pass. */
s->padding_statement.output_offset =
dot - output_section_statement->bfd_section->vma;
dot += s->padding_statement.size;
output_section_statement->bfd_section->_raw_size +=
s->padding_statement.size;
break;
exp_fold_tree (s->assignment_statement.exp,
output_section_statement,
lang_allocating_phase_enum,
dot,
&newdot);
case lang_group_statement_enum:
dot = lang_size_sections (s->group_statement.children.head,
output_section_statement,
&s->group_statement.children.head,
fill, dot, relax);
break;
if (newdot != dot)
{
/* The assignment changed dot. Insert a pad. */
if (output_section_statement == abs_output_section)
{
/* If we don't have an output section, then just adjust
the default memory address. */
lang_memory_region_lookup ("*default*")->current = newdot;
}
else if (!relax)
{
lang_statement_union_type *new =
((lang_statement_union_type *)
stat_alloc (sizeof (lang_padding_statement_type)));
default:
FAIL ();
break;
/* Link into existing chain */
new->header.next = *prev;
*prev = new;
new->header.type = lang_padding_statement_enum;
new->padding_statement.output_section =
output_section_statement->bfd_section;
new->padding_statement.output_offset =
dot - output_section_statement->bfd_section->vma;
new->padding_statement.fill = fill;
new->padding_statement.size = newdot - dot;
output_section_statement->bfd_section->_raw_size +=
new->padding_statement.size;
}
/* This can only get here when relaxing is turned on. */
dot = newdot;
}
}
break;
case lang_padding_statement_enum:
/* If we are relaxing, and this is not the first pass, some
padding statements may have been inserted during previous
passes. We may have to move the padding statement to a new
location if dot has a different value at this point in this
pass than it did at this point in the previous pass. */
s->padding_statement.output_offset =
dot - output_section_statement->bfd_section->vma;
dot += s->padding_statement.size;
output_section_statement->bfd_section->_raw_size +=
s->padding_statement.size;
break;
case lang_group_statement_enum:
dot = lang_size_sections (s->group_statement.children.head,
output_section_statement,
&s->group_statement.children.head,
fill, dot, relax);
break;
default:
FAIL ();
break;
/* This can only get here when relaxing is turned on */
case lang_address_statement_enum:
break;
case lang_address_statement_enum:
break;
}
prev = &s->header.next;
}
prev = &s->header.next;
}
return dot;
}
@ -3732,7 +3737,7 @@ lang_add_wild (section_name, sections_sorted, filename, filenames_sorted,
{
placed_commons = true;
}
if (filename != (char *) NULL)
if (filename != NULL && ! wildcardp (filename))
{
lang_has_input_file = true;
}