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-rw-r--r--ld/ChangeLog15
-rw-r--r--ld/ldwrite.c263
2 files changed, 251 insertions, 27 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog
index bc44f76..fa98876 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,18 @@
+Mon Dec 19 14:02:13 1994 Steve Chamberlain (sac@jonny.cygnus.com)
+
+ * ld.h (split_by_reloc, split_by_file): New flags.
+ * ldwrite.c (clone_section, split_sections): New functions.
+ * lexsup.c (parse_args): Understand new split options.
+
+start-sanitize-arc
+Tue Dec 13 16:45:18 1994 Doug Evans <dje@canuck.cygnus.com>
+
+ * configure.in (arc-elf): New target.
+ * Makefile.in (earcelf.c): New target.
+ * config/arc-elf.mt: New file.
+ * emulparms/arcelf.sh: New file.
+end-sanitize-arc
+
Fri Dec 9 17:22:55 1994 Ian Lance Taylor <ian@sanguine.cygnus.com>
* scripttempl/elf.sc: Move .ctors and .dtors from .text segment to
diff --git a/ld/ldwrite.c b/ld/ldwrite.c
index 1dacb3d..c9caf83 100644
--- a/ld/ldwrite.c
+++ b/ld/ldwrite.c
@@ -44,42 +44,46 @@ build_link_order (statement)
switch (statement->header.type)
{
case lang_data_statement_enum:
- /* FIXME: This should probably build a link_order, but instead
- it just does the output directly. */
{
- bfd_vma value = statement->data_statement.value;
- bfd_byte play_area[QUAD_SIZE];
- unsigned int size = 0;
- asection *output_section = statement->data_statement.output_section;
+ asection *output_section;
+ struct bfd_link_order *link_order;
+ bfd_vma value;
+
+ output_section = statement->data_statement.output_section;
+ ASSERT (output_section->owner == output_bfd);
+
+ link_order = bfd_new_link_order (output_bfd, output_section);
+ if (link_order == NULL)
+ einfo ("%P%F: bfd_new_link_order failed");
+
+ link_order->type = bfd_data_link_order;
+ link_order->offset = statement->data_statement.output_vma;
+ link_order->u.data.contents = (bfd_byte *) xmalloc (QUAD_SIZE);
+
+ value = statement->data_statement.value;
ASSERT (output_section->owner == output_bfd);
switch (statement->data_statement.type)
{
case QUAD:
- bfd_put_64 (output_bfd, value, play_area);
- size = QUAD_SIZE;
+ bfd_put_64 (output_bfd, value, link_order->u.data.contents);
+ link_order->size = QUAD_SIZE;
break;
case LONG:
- bfd_put_32 (output_bfd, value, play_area);
- size = LONG_SIZE;
+ bfd_put_32 (output_bfd, value, link_order->u.data.contents);
+ link_order->size = LONG_SIZE;
break;
case SHORT:
- bfd_put_16 (output_bfd, value, play_area);
- size = SHORT_SIZE;
+ bfd_put_16 (output_bfd, value, link_order->u.data.contents);
+ link_order->size = SHORT_SIZE;
break;
case BYTE:
- bfd_put_8 (output_bfd, value, play_area);
- size = BYTE_SIZE;
+ bfd_put_8 (output_bfd, value, link_order->u.data.contents);
+ link_order->size = BYTE_SIZE;
break;
default:
abort ();
}
-
- if (! bfd_set_section_contents (output_bfd, output_section,
- play_area,
- statement->data_statement.output_vma,
- size))
- einfo ("%P%X: writing data failed: %E\n");
}
break;
@@ -196,12 +200,217 @@ build_link_order (statement)
/* Call BFD to write out the linked file. */
+
+/**********************************************************************/
+
+
+/* Wander around the input sections, make sure that
+ we'll never try and create an output section with more relocs
+ than will fit.. Do this by always assuming the worst case, and
+ creating new output sections with all the right bits */
+#define TESTIT 1
+static asection *
+clone_section (abfd, s, count)
+ bfd *abfd;
+ asection *s;
+ int *count;
+{
+#define SSIZE 8
+ char sname[SSIZE]; /* ?? find the name for this size */
+ asection *n;
+
+ /* Invent a section name - use first five
+ chars of base section name and a digit suffix */
+ do
+ {
+ int i;
+ char b[6];
+ for (i = 0; i < sizeof (b) - 1 && s->name[i]; i++)
+ b[i] = s->name[i];
+ b[i] = 0;
+ sprintf (sname, "%s%d", b, (*count)++);
+ }
+ while (bfd_get_section_by_name (abfd, sname));
+
+ n = bfd_make_section_anyway (abfd, strdup (sname));
+
+ n->flags = s->flags;
+ n->vma = s->vma;
+ n->user_set_vma = s->user_set_vma;
+ n->lma = s->lma;
+ n->_cooked_size = 0;
+ n->_raw_size = 0;
+ n->output_offset = s->output_offset;
+ n->output_section = n;
+ n->orelocation = 0;
+ n->reloc_count = 0;
+
+ return n;
+}
+
+#if TESTING
+static void
+ds (s)
+ asection *s;
+{
+ struct bfd_link_order *l = s->link_order_head;
+ printf ("vma %x size %x\n", s->vma, s->_raw_size);
+ while (l)
+ {
+ if (l->type == bfd_indirect_link_order)
+ {
+ printf ("%8x %s\n", l->offset, l->u.indirect.section->owner->filename);
+ }
+ else
+ {
+ printf ("%8x something else\n", l->offset);
+ }
+ l = l->next;
+ }
+ printf ("\n");
+}
+dump (s, a1, a2)
+ char *s;
+ asection *a1;
+ asection *a2;
+{
+ printf ("%s\n", s);
+ ds (a1);
+ ds (a2);
+}
+
+static void
+sanity_check (abfd)
+ bfd *abfd;
+{
+ asection *s;
+ for (s = abfd->sections; s; s = s->next)
+ {
+ struct bfd_link_order *p;
+ bfd_vma prev = 0;
+ for (p = s->link_order_head; p; p = p->next)
+ {
+ if (p->offset > 100000)
+ abort ();
+ if (p->offset < prev)
+ abort ();
+ prev = p->offset;
+ }
+ }
+}
+#else
+#define sanity_check(a)
+#define dump(a, b, c)
+#endif
+
+
+void
+split_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ asection *original_sec;
+ int nsecs = abfd->section_count;
+ sanity_check (abfd);
+ /* look through all the original sections */
+ for (original_sec = abfd->sections;
+ original_sec && nsecs;
+ original_sec = original_sec->next, nsecs--)
+ {
+ int count = 0;
+ int lines = 0;
+ int relocs = 0;
+ struct bfd_link_order **pp;
+ bfd_vma vma = original_sec->vma;
+ bfd_vma shift_offset = 0;
+ asection *cursor = original_sec;
+ /* count up the relocations and line entries to see if
+ anything would be too big to fit */
+ for (pp = &(cursor->link_order_head); *pp; pp = &((*pp)->next))
+ {
+ struct bfd_link_order *p = *pp;
+ int thislines = 0;
+ int thisrelocs = 0;
+ if (p->type == bfd_indirect_link_order)
+ {
+ asection *sec;
+
+ sec = p->u.indirect.section;
+
+ if (info->strip == strip_none
+ || info->strip == strip_some)
+ thislines = sec->lineno_count;
+
+ if (info->relocateable)
+ thisrelocs = sec->reloc_count;
+
+ }
+ else if (info->relocateable
+ && (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order))
+ thisrelocs++;
+
+ if (thisrelocs + relocs > config.split_by_reloc
+ || thislines + lines > config.split_by_reloc
+ || config.split_by_file)
+ {
+ /* create a new section and put this link order and the
+ following link orders into it */
+ struct bfd_link_order *l = p;
+ asection *n = clone_section (abfd, cursor, &count);
+ *pp = NULL; /* Snip off link orders from old section */
+ n->link_order_head = l; /* attach to new section */
+ pp = &n->link_order_head;
+
+ /* change the size of the original section and
+ update the vma of the new one */
+
+ dump ("before snip", cursor, n);
+
+ n->_raw_size = cursor->_raw_size - l->offset;
+ cursor->_raw_size = l->offset;
+
+ vma += cursor->_raw_size;
+ n->lma = n->vma = vma;
+
+ shift_offset = l->offset;
+
+ /* run down the chain and change the output section to
+ the right one, update the offsets too */
+
+ while (l)
+ {
+ l->offset -= shift_offset;
+ if (l->type == bfd_indirect_link_order)
+ {
+ l->u.indirect.section->output_section = n;
+ l->u.indirect.section->output_offset = l->offset;
+ }
+ l = l->next;
+ }
+ dump ("after snip", cursor, n);
+ cursor = n;
+ relocs = thisrelocs;
+ lines = thislines;
+ }
+ else
+ {
+ relocs += thisrelocs;
+ lines += thislines;
+ }
+ }
+ }
+ sanity_check (abfd);
+}
+/**********************************************************************/
void
ldwrite ()
{
lang_for_each_statement (build_link_order);
- if (! bfd_final_link (output_bfd, &link_info))
+ if (config.split_by_reloc || config.split_by_file)
+ split_sections (output_bfd, &link_info);
+ if (!bfd_final_link (output_bfd, &link_info))
einfo ("%F%P: final link failed: %E\n", output_bfd);
if (config.map_file)
@@ -228,7 +437,7 @@ print_symbol_table ()
static void
print_file_stuff (f)
- lang_input_statement_type * f;
+ lang_input_statement_type *f;
{
fprintf (config.map_file, " %s\n", f->filename);
if (f->just_syms_flag)
@@ -289,7 +498,7 @@ print_symbol (p, ignore)
|| p->type == bfd_link_hash_warning)
p = p->u.i.link;
- switch (p->type)
+ switch (p->type)
{
case bfd_link_hash_new:
abort ();
@@ -297,16 +506,16 @@ print_symbol (p, ignore)
case bfd_link_hash_undefined:
fprintf (config.map_file, "undefined ");
fprintf (config.map_file, "%s ", p->root.string);
- print_nl ();
+ print_nl ();
break;
case bfd_link_hash_weak:
fprintf (config.map_file, "weak ");
fprintf (config.map_file, "%s ", p->root.string);
- print_nl ();
+ print_nl ();
break;
- case bfd_link_hash_defined:
+ case bfd_link_hash_defined:
{
asection *defsec = p->u.def.section;
@@ -324,7 +533,7 @@ print_symbol (p, ignore)
}
fprintf (config.map_file, " %s ", p->root.string);
}
- print_nl ();
+ print_nl ();
break;
case bfd_link_hash_common:
generated by cgit v1.1 at 2024-12-18 15:24:30 +0000