/* ldwrite.c -- write out the linked file
- Copyright (C) 1993 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 2000
+ Free Software Foundation, Inc.
Written by Steve Chamberlain sac@cygnus.com
This file is part of GLD, the Gnu Linker.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
+#include "libiberty.h"
#include "ld.h"
#include "ldexp.h"
#include "ldmain.h"
static void build_link_order PARAMS ((lang_statement_union_type *));
-static void print_symbol_table PARAMS ((void));
-static void print_file_stuff PARAMS ((lang_input_statement_type *));
-static boolean print_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
+static asection *clone_section PARAMS ((bfd *, asection *, const char *, int *));
+static void split_sections PARAMS ((bfd *, struct bfd_link_info *));
/* Build link_order structures for the BFD linker. */
asection *output_section;
struct bfd_link_order *link_order;
bfd_vma value;
+ boolean big_endian = false;
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");
+ einfo (_("%P%F: bfd_new_link_order failed\n"));
link_order->type = bfd_data_link_order;
link_order->offset = statement->data_statement.output_vma;
value = statement->data_statement.value;
+ /* If the endianness of the output BFD is not known, then we
+ base the endianness of the data on the first input file.
+ By convention, the bfd_put routines for an unknown
+ endianness are big endian, so we must swap here if the
+ input file is little endian. */
+ if (bfd_big_endian (output_bfd))
+ big_endian = true;
+ else if (bfd_little_endian (output_bfd))
+ big_endian = false;
+ else
+ {
+ boolean swap;
+
+ swap = false;
+ if (command_line.endian == ENDIAN_BIG)
+ big_endian = true;
+ else if (command_line.endian == ENDIAN_LITTLE)
+ {
+ big_endian = false;
+ swap = true;
+ }
+ else if (command_line.endian == ENDIAN_UNSET)
+ {
+ big_endian = true;
+ {
+ LANG_FOR_EACH_INPUT_STATEMENT (s)
+ {
+ if (s->the_bfd != NULL)
+ {
+ if (bfd_little_endian (s->the_bfd))
+ {
+ big_endian = false;
+ swap = true;
+ }
+ break;
+ }
+ }
+ }
+ }
+
+ if (swap)
+ {
+ bfd_byte buffer[8];
+
+ switch (statement->data_statement.type)
+ {
+ case QUAD:
+ case SQUAD:
+ if (sizeof (bfd_vma) >= QUAD_SIZE)
+ {
+ bfd_putl64 (value, buffer);
+ value = bfd_getb64 (buffer);
+ break;
+ }
+ /* Fall through. */
+ case LONG:
+ bfd_putl32 (value, buffer);
+ value = bfd_getb32 (buffer);
+ break;
+ case SHORT:
+ bfd_putl16 (value, buffer);
+ value = bfd_getb16 (buffer);
+ break;
+ case BYTE:
+ break;
+ default:
+ abort ();
+ }
+ }
+ }
+
ASSERT (output_section->owner == output_bfd);
switch (statement->data_statement.type)
{
case QUAD:
- bfd_put_64 (output_bfd, value, link_order->u.data.contents);
+ case SQUAD:
+ if (sizeof (bfd_vma) >= QUAD_SIZE)
+ bfd_put_64 (output_bfd, value, link_order->u.data.contents);
+ else
+ {
+ bfd_vma high;
+
+ if (statement->data_statement.type == QUAD)
+ high = 0;
+ else if ((value & 0x80000000) == 0)
+ high = 0;
+ else
+ high = (bfd_vma) -1;
+ bfd_put_32 (output_bfd, high,
+ (link_order->u.data.contents
+ + (big_endian ? 0 : 4)));
+ bfd_put_32 (output_bfd, value,
+ (link_order->u.data.contents
+ + (big_endian ? 4 : 0)));
+ }
link_order->size = QUAD_SIZE;
break;
case LONG:
link_order = bfd_new_link_order (output_bfd, output_section);
if (link_order == NULL)
- einfo ("%P%F: bfd_new_link_order failed");
+ einfo (_("%P%F: bfd_new_link_order failed\n"));
link_order->offset = rs->output_vma;
link_order->size = bfd_get_reloc_size (rs->howto);
link_order->u.reloc.p->reloc = rs->reloc;
link_order->u.reloc.p->addend = rs->addend_value;
- if (rs->section != (asection *) NULL)
+ if (rs->name == NULL)
{
- ASSERT (rs->name == (const char *) NULL);
link_order->type = bfd_section_reloc_link_order;
if (rs->section->owner == output_bfd)
link_order->u.reloc.p->u.section = rs->section;
}
else
{
- ASSERT (rs->name != (const char *) NULL);
link_order->type = bfd_symbol_reloc_link_order;
link_order->u.reloc.p->u.name = rs->name;
}
/* 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 */
+ creating new output sections with all the right bits. */
#define TESTIT 1
static asection *
-clone_section (abfd, s, count)
+clone_section (abfd, s, name, count)
bfd *abfd;
asection *s;
+ const char *name;
int *count;
{
-#define SSIZE 8
- char sname[SSIZE]; /* ?? find the name for this size */
+ char templ[6];
+ char *sname;
asection *n;
-
- /* Invent a section name - use first five
- chars of base section name and a digit suffix */
- do
+ struct bfd_link_hash_entry *h;
+
+ /* Invent a section name from the first five chars of the base
+ section name and a digit suffix. */
+ strncpy (templ, name, sizeof (templ) - 1);
+ templ[sizeof (templ) - 1] = '\0';
+ if ((sname = bfd_get_unique_section_name (abfd, templ, count)) == NULL
+ || (n = bfd_make_section_anyway (abfd, sname)) == NULL
+ || (h = bfd_link_hash_lookup (link_info.hash,
+ sname, true, true, false)) == NULL)
{
- 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)++);
+ einfo (_("%F%P: clone section failed: %E\n"));
+ /* Silence gcc warnings. einfo exits, so we never reach here. */
+ return NULL;
}
- while (bfd_get_section_by_name (abfd, sname));
- n = bfd_make_section_anyway (abfd, strdup (sname));
+ /* Set up section symbol. */
+ h->type = bfd_link_hash_defined;
+ h->u.def.value = 0;
+ h->u.def.section = n;
n->flags = s->flags;
n->vma = s->vma;
n->output_section = n;
n->orelocation = 0;
n->reloc_count = 0;
-
+ n->alignment_power = s->alignment_power;
return n;
}
#if TESTING
-static void
+static void
ds (s)
asection *s;
{
}
else
{
- printf ("%8x something else\n", l->offset);
+ printf (_("%8x something else\n"), l->offset);
}
l = l->next;
}
printf ("\n");
}
+
dump (s, a1, a2)
char *s;
asection *a1;
ds (a2);
}
-static void
+static void
sanity_check (abfd)
bfd *abfd;
{
#define dump(a, b, c)
#endif
-
-void
+static 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 */
+ /* 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;
+ unsigned int lines = 0;
+ unsigned int relocs = 0;
+ bfd_size_type sec_size = 0;
+ struct bfd_link_order *l;
+ struct bfd_link_order *p;
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))
+
+ /* Count up the relocations and line entries to see if anything
+ would be too big to fit. Accumulate section size too. */
+ for (l = NULL, p = cursor->link_order_head; p != NULL; p = l->next)
{
- struct bfd_link_order *p = *pp;
- int thislines = 0;
- int thisrelocs = 0;
+ unsigned int thislines = 0;
+ unsigned int thisrelocs = 0;
+ bfd_size_type thissize = 0;
if (p->type == bfd_indirect_link_order)
{
asection *sec;
if (info->relocateable)
thisrelocs = sec->reloc_count;
+ if (sec->_cooked_size != 0)
+ thissize = sec->_cooked_size;
+ else
+ thissize = sec->_raw_size;
+
}
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)
+ if (l != NULL
+ && (thisrelocs + relocs >= config.split_by_reloc
+ || thislines + lines >= config.split_by_reloc
+ || thissize + sec_size >= 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;
+ /* Create a new section and put this link order and the
+ following link orders into it. */
+ bfd_vma shift_offset;
+ asection *n;
- /* change the size of the original section and
- update the vma of the new one */
+ n = clone_section (abfd, cursor, original_sec->name, &count);
- dump ("before snip", cursor, n);
+ /* Attach the link orders to the new section and snip
+ them off from the old section. */
+ n->link_order_head = p;
+ n->link_order_tail = cursor->link_order_tail;
+ cursor->link_order_tail = l;
+ l->next = NULL;
+ l = p;
- n->_raw_size = cursor->_raw_size - l->offset;
- cursor->_raw_size = l->offset;
+ /* Change the size of the original section and
+ update the vma of the new one. */
- vma += cursor->_raw_size;
- n->lma = n->vma = vma;
+ dump ("before snip", cursor, n);
- shift_offset = l->offset;
+ shift_offset = p->offset;
+ if (cursor->_cooked_size != 0)
+ {
+ n->_cooked_size = cursor->_cooked_size - shift_offset;
+ cursor->_cooked_size = shift_offset;
+ }
+ n->_raw_size = cursor->_raw_size - shift_offset;
+ cursor->_raw_size = shift_offset;
- /* run down the chain and change the output section to
- the right one, update the offsets too */
+ vma += shift_offset;
+ n->lma = n->vma = vma;
- while (l)
+ /* Run down the chain and change the output section to
+ the right one, update the offsets too. */
+ do
{
- l->offset -= shift_offset;
- if (l->type == bfd_indirect_link_order)
+ p->offset -= shift_offset;
+ if (p->type == bfd_indirect_link_order)
{
- l->u.indirect.section->output_section = n;
- l->u.indirect.section->output_offset = l->offset;
+ p->u.indirect.section->output_section = n;
+ p->u.indirect.section->output_offset = p->offset;
}
- l = l->next;
+ p = p->next;
}
+ while (p);
+
dump ("after snip", cursor, n);
cursor = n;
relocs = thisrelocs;
lines = thislines;
+ sec_size = thissize;
}
else
{
+ l = p;
relocs += thisrelocs;
lines += thislines;
+ sec_size += thissize;
}
}
}
sanity_check (abfd);
}
+
/**********************************************************************/
+
void
ldwrite ()
{
+ /* Reset error indicator, which can typically something like invalid
+ format from opening up the .o files. */
+ bfd_set_error (bfd_error_no_error);
lang_for_each_statement (build_link_order);
- if (config.split_by_reloc || config.split_by_file)
+ if (config.split_by_reloc != (unsigned) -1
+ || config.split_by_file != (bfd_size_type) -1)
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)
- {
- print_symbol_table ();
- lang_map ();
- }
-}
-
-/* Print the symbol table. */
-
-static void
-print_symbol_table ()
-{
- fprintf (config.map_file, "**FILES**\n\n");
- lang_for_each_file (print_file_stuff);
-
- fprintf (config.map_file, "**GLOBAL SYMBOLS**\n\n");
- fprintf (config.map_file, "offset section offset symbol\n");
- bfd_link_hash_traverse (link_info.hash, print_symbol, (PTR) NULL);
-}
-
-/* Print information about a file. */
-
-static void
-print_file_stuff (f)
- lang_input_statement_type *f;
-{
- fprintf (config.map_file, " %s\n", f->filename);
- if (f->just_syms_flag)
- {
- fprintf (config.map_file, " symbols only\n");
- }
- else
{
- asection *s;
- if (true)
- {
- for (s = f->the_bfd->sections;
- s != (asection *) NULL;
- s = s->next)
- {
- print_address (s->output_offset);
- if (s->reloc_done)
- {
- fprintf (config.map_file, " %08x 2**%2ud %s\n",
- (unsigned) bfd_get_section_size_after_reloc (s),
- s->alignment_power, s->name);
- }
+ /* If there was an error recorded, print it out. Otherwise assume
+ an appropriate error message like unknown symbol was printed
+ out. */
- else
- {
- fprintf (config.map_file, " %08x 2**%2ud %s\n",
- (unsigned) bfd_get_section_size_before_reloc (s),
- s->alignment_power, s->name);
- }
- }
- }
+ if (bfd_get_error () != bfd_error_no_error)
+ einfo (_("%F%P: final link failed: %E\n"));
else
- {
- for (s = f->the_bfd->sections;
- s != (asection *) NULL;
- s = s->next)
- {
- fprintf (config.map_file, "%s ", s->name);
- print_address (s->output_offset);
- fprintf (config.map_file, "(%x)",
- (unsigned) bfd_get_section_size_after_reloc (s));
- }
- fprintf (config.map_file, "hex \n");
- }
- }
- print_nl ();
-}
-
-/* Print a symbol. */
-
-/*ARGSUSED*/
-static boolean
-print_symbol (p, ignore)
- struct bfd_link_hash_entry *p;
- PTR ignore;
-{
- while (p->type == bfd_link_hash_indirect
- || p->type == bfd_link_hash_warning)
- p = p->u.i.link;
-
- switch (p->type)
- {
- case bfd_link_hash_new:
- abort ();
-
- case bfd_link_hash_undefined:
- fprintf (config.map_file, "undefined ");
- fprintf (config.map_file, "%s ", p->root.string);
- print_nl ();
- break;
-
- case bfd_link_hash_weak:
- fprintf (config.map_file, "weak ");
- fprintf (config.map_file, "%s ", p->root.string);
- print_nl ();
- break;
-
- case bfd_link_hash_defined:
- {
- asection *defsec = p->u.def.section;
-
- print_address (p->u.def.value);
- if (defsec)
- {
- fprintf (config.map_file, " %-10s",
- bfd_section_name (output_bfd, defsec));
- print_space ();
- print_address (p->u.def.value + defsec->vma);
- }
- else
- {
- fprintf (config.map_file, " .......");
- }
- fprintf (config.map_file, " %s ", p->root.string);
- }
- print_nl ();
- break;
-
- case bfd_link_hash_common:
- fprintf (config.map_file, "common ");
- print_address (p->u.c.size);
- fprintf (config.map_file, " %s ", p->root.string);
- print_nl ();
- break;
-
- default:
- abort ();
+ xexit (1);
}
-
- return true;
}
projects / deliverable / binutils-gdb.git / blobdiff