/* ldwrite.c -- write out the linked file
|
/* ldwrite.c -- write out the linked file
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2002,
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2002,
|
2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
|
2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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Written by Steve Chamberlain sac@cygnus.com
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Written by Steve Chamberlain sac@cygnus.com
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|
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This file is part of the GNU Binutils.
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This file is part of the GNU Binutils.
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|
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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|
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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|
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
|
along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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|
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#include "sysdep.h"
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "bfdlink.h"
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#include "libiberty.h"
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#include "libiberty.h"
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#include "safe-ctype.h"
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#include "safe-ctype.h"
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|
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#include "ld.h"
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#include "ld.h"
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#include "ldexp.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldlang.h"
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#include "ldwrite.h"
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#include "ldwrite.h"
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#include "ldmisc.h"
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#include "ldmisc.h"
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#include <ldgram.h>
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#include <ldgram.h>
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#include "ldmain.h"
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#include "ldmain.h"
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|
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/* Build link_order structures for the BFD linker. */
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/* Build link_order structures for the BFD linker. */
|
|
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static void
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static void
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build_link_order (lang_statement_union_type *statement)
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build_link_order (lang_statement_union_type *statement)
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{
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{
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switch (statement->header.type)
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switch (statement->header.type)
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{
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{
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case lang_data_statement_enum:
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case lang_data_statement_enum:
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{
|
{
|
asection *output_section;
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asection *output_section;
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struct bfd_link_order *link_order;
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struct bfd_link_order *link_order;
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bfd_vma value;
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bfd_vma value;
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bfd_boolean big_endian = FALSE;
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bfd_boolean big_endian = FALSE;
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|
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output_section = statement->data_statement.output_section;
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output_section = statement->data_statement.output_section;
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ASSERT (output_section->owner == link_info.output_bfd);
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ASSERT (output_section->owner == link_info.output_bfd);
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|
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link_order = bfd_new_link_order (link_info.output_bfd, output_section);
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link_order = bfd_new_link_order (link_info.output_bfd, output_section);
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if (link_order == NULL)
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if (link_order == NULL)
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einfo (_("%P%F: bfd_new_link_order failed\n"));
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einfo (_("%P%F: bfd_new_link_order failed\n"));
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|
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link_order->type = bfd_data_link_order;
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link_order->type = bfd_data_link_order;
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link_order->offset = statement->data_statement.output_offset;
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link_order->offset = statement->data_statement.output_offset;
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link_order->u.data.contents = xmalloc (QUAD_SIZE);
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link_order->u.data.contents = xmalloc (QUAD_SIZE);
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|
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value = statement->data_statement.value;
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value = statement->data_statement.value;
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|
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/* If the endianness of the output BFD is not known, then we
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/* If the endianness of the output BFD is not known, then we
|
base the endianness of the data on the first input file.
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base the endianness of the data on the first input file.
|
By convention, the bfd_put routines for an unknown
|
By convention, the bfd_put routines for an unknown
|
endianness are big endian, so we must swap here if the
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endianness are big endian, so we must swap here if the
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input file is little endian. */
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input file is little endian. */
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if (bfd_big_endian (link_info.output_bfd))
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if (bfd_big_endian (link_info.output_bfd))
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big_endian = TRUE;
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big_endian = TRUE;
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else if (bfd_little_endian (link_info.output_bfd))
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else if (bfd_little_endian (link_info.output_bfd))
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big_endian = FALSE;
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big_endian = FALSE;
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else
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else
|
{
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{
|
bfd_boolean swap;
|
bfd_boolean swap;
|
|
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swap = FALSE;
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swap = FALSE;
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if (command_line.endian == ENDIAN_BIG)
|
if (command_line.endian == ENDIAN_BIG)
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big_endian = TRUE;
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big_endian = TRUE;
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else if (command_line.endian == ENDIAN_LITTLE)
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else if (command_line.endian == ENDIAN_LITTLE)
|
{
|
{
|
big_endian = FALSE;
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big_endian = FALSE;
|
swap = TRUE;
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swap = TRUE;
|
}
|
}
|
else if (command_line.endian == ENDIAN_UNSET)
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else if (command_line.endian == ENDIAN_UNSET)
|
{
|
{
|
big_endian = TRUE;
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big_endian = TRUE;
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{
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{
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LANG_FOR_EACH_INPUT_STATEMENT (s)
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LANG_FOR_EACH_INPUT_STATEMENT (s)
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{
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{
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if (s->the_bfd != NULL)
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if (s->the_bfd != NULL)
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{
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{
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if (bfd_little_endian (s->the_bfd))
|
if (bfd_little_endian (s->the_bfd))
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{
|
{
|
big_endian = FALSE;
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big_endian = FALSE;
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swap = TRUE;
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swap = TRUE;
|
}
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}
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
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}
|
|
|
if (swap)
|
if (swap)
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{
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{
|
bfd_byte buffer[8];
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bfd_byte buffer[8];
|
|
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switch (statement->data_statement.type)
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switch (statement->data_statement.type)
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{
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{
|
case QUAD:
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case QUAD:
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case SQUAD:
|
case SQUAD:
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if (sizeof (bfd_vma) >= QUAD_SIZE)
|
if (sizeof (bfd_vma) >= QUAD_SIZE)
|
{
|
{
|
bfd_putl64 (value, buffer);
|
bfd_putl64 (value, buffer);
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value = bfd_getb64 (buffer);
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value = bfd_getb64 (buffer);
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break;
|
break;
|
}
|
}
|
/* Fall through. */
|
/* Fall through. */
|
case LONG:
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case LONG:
|
bfd_putl32 (value, buffer);
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bfd_putl32 (value, buffer);
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value = bfd_getb32 (buffer);
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value = bfd_getb32 (buffer);
|
break;
|
break;
|
case SHORT:
|
case SHORT:
|
bfd_putl16 (value, buffer);
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bfd_putl16 (value, buffer);
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value = bfd_getb16 (buffer);
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value = bfd_getb16 (buffer);
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break;
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break;
|
case BYTE:
|
case BYTE:
|
break;
|
break;
|
default:
|
default:
|
abort ();
|
abort ();
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
ASSERT (output_section->owner == link_info.output_bfd);
|
ASSERT (output_section->owner == link_info.output_bfd);
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switch (statement->data_statement.type)
|
switch (statement->data_statement.type)
|
{
|
{
|
case QUAD:
|
case QUAD:
|
case SQUAD:
|
case SQUAD:
|
if (sizeof (bfd_vma) >= QUAD_SIZE)
|
if (sizeof (bfd_vma) >= QUAD_SIZE)
|
bfd_put_64 (link_info.output_bfd, value,
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bfd_put_64 (link_info.output_bfd, value,
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link_order->u.data.contents);
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link_order->u.data.contents);
|
else
|
else
|
{
|
{
|
bfd_vma high;
|
bfd_vma high;
|
|
|
if (statement->data_statement.type == QUAD)
|
if (statement->data_statement.type == QUAD)
|
high = 0;
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high = 0;
|
else if ((value & 0x80000000) == 0)
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else if ((value & 0x80000000) == 0)
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high = 0;
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high = 0;
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else
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else
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high = (bfd_vma) -1;
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high = (bfd_vma) -1;
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bfd_put_32 (link_info.output_bfd, high,
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bfd_put_32 (link_info.output_bfd, high,
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(link_order->u.data.contents
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(link_order->u.data.contents
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+ (big_endian ? 0 : 4)));
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+ (big_endian ? 0 : 4)));
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bfd_put_32 (link_info.output_bfd, value,
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bfd_put_32 (link_info.output_bfd, value,
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(link_order->u.data.contents
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(link_order->u.data.contents
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+ (big_endian ? 4 : 0)));
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+ (big_endian ? 4 : 0)));
|
}
|
}
|
link_order->size = QUAD_SIZE;
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link_order->size = QUAD_SIZE;
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break;
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break;
|
case LONG:
|
case LONG:
|
bfd_put_32 (link_info.output_bfd, value,
|
bfd_put_32 (link_info.output_bfd, value,
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link_order->u.data.contents);
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link_order->u.data.contents);
|
link_order->size = LONG_SIZE;
|
link_order->size = LONG_SIZE;
|
break;
|
break;
|
case SHORT:
|
case SHORT:
|
bfd_put_16 (link_info.output_bfd, value,
|
bfd_put_16 (link_info.output_bfd, value,
|
link_order->u.data.contents);
|
link_order->u.data.contents);
|
link_order->size = SHORT_SIZE;
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link_order->size = SHORT_SIZE;
|
break;
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break;
|
case BYTE:
|
case BYTE:
|
bfd_put_8 (link_info.output_bfd, value,
|
bfd_put_8 (link_info.output_bfd, value,
|
link_order->u.data.contents);
|
link_order->u.data.contents);
|
link_order->size = BYTE_SIZE;
|
link_order->size = BYTE_SIZE;
|
break;
|
break;
|
default:
|
default:
|
abort ();
|
abort ();
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case lang_reloc_statement_enum:
|
case lang_reloc_statement_enum:
|
{
|
{
|
lang_reloc_statement_type *rs;
|
lang_reloc_statement_type *rs;
|
asection *output_section;
|
asection *output_section;
|
struct bfd_link_order *link_order;
|
struct bfd_link_order *link_order;
|
|
|
rs = &statement->reloc_statement;
|
rs = &statement->reloc_statement;
|
|
|
output_section = rs->output_section;
|
output_section = rs->output_section;
|
ASSERT (output_section->owner == link_info.output_bfd);
|
ASSERT (output_section->owner == link_info.output_bfd);
|
|
|
link_order = bfd_new_link_order (link_info.output_bfd, output_section);
|
link_order = bfd_new_link_order (link_info.output_bfd, output_section);
|
if (link_order == NULL)
|
if (link_order == NULL)
|
einfo (_("%P%F: bfd_new_link_order failed\n"));
|
einfo (_("%P%F: bfd_new_link_order failed\n"));
|
|
|
link_order->offset = rs->output_offset;
|
link_order->offset = rs->output_offset;
|
link_order->size = bfd_get_reloc_size (rs->howto);
|
link_order->size = bfd_get_reloc_size (rs->howto);
|
|
|
link_order->u.reloc.p = xmalloc (sizeof (struct bfd_link_order_reloc));
|
link_order->u.reloc.p = xmalloc (sizeof (struct bfd_link_order_reloc));
|
|
|
link_order->u.reloc.p->reloc = rs->reloc;
|
link_order->u.reloc.p->reloc = rs->reloc;
|
link_order->u.reloc.p->addend = rs->addend_value;
|
link_order->u.reloc.p->addend = rs->addend_value;
|
|
|
if (rs->name == NULL)
|
if (rs->name == NULL)
|
{
|
{
|
link_order->type = bfd_section_reloc_link_order;
|
link_order->type = bfd_section_reloc_link_order;
|
if (rs->section->owner == link_info.output_bfd)
|
if (rs->section->owner == link_info.output_bfd)
|
link_order->u.reloc.p->u.section = rs->section;
|
link_order->u.reloc.p->u.section = rs->section;
|
else
|
else
|
{
|
{
|
link_order->u.reloc.p->u.section = rs->section->output_section;
|
link_order->u.reloc.p->u.section = rs->section->output_section;
|
link_order->u.reloc.p->addend += rs->section->output_offset;
|
link_order->u.reloc.p->addend += rs->section->output_offset;
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
link_order->type = bfd_symbol_reloc_link_order;
|
link_order->type = bfd_symbol_reloc_link_order;
|
link_order->u.reloc.p->u.name = rs->name;
|
link_order->u.reloc.p->u.name = rs->name;
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case lang_input_section_enum:
|
case lang_input_section_enum:
|
{
|
{
|
/* Create a new link_order in the output section with this
|
/* Create a new link_order in the output section with this
|
attached */
|
attached */
|
asection *i = statement->input_section.section;
|
asection *i = statement->input_section.section;
|
|
|
if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
|
if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
|
&& (i->flags & SEC_EXCLUDE) == 0)
|
&& (i->flags & SEC_EXCLUDE) == 0)
|
{
|
{
|
asection *output_section = i->output_section;
|
asection *output_section = i->output_section;
|
|
|
ASSERT (output_section->owner == link_info.output_bfd);
|
ASSERT (output_section->owner == link_info.output_bfd);
|
|
|
if ((output_section->flags & SEC_HAS_CONTENTS) != 0
|
if ((output_section->flags & SEC_HAS_CONTENTS) != 0
|
|| ((output_section->flags & SEC_LOAD) != 0
|
|| ((output_section->flags & SEC_LOAD) != 0
|
&& (output_section->flags & SEC_THREAD_LOCAL)))
|
&& (output_section->flags & SEC_THREAD_LOCAL)))
|
{
|
{
|
struct bfd_link_order *link_order;
|
struct bfd_link_order *link_order;
|
|
|
link_order = bfd_new_link_order (link_info.output_bfd,
|
link_order = bfd_new_link_order (link_info.output_bfd,
|
output_section);
|
output_section);
|
|
|
if (i->flags & SEC_NEVER_LOAD)
|
if (i->flags & SEC_NEVER_LOAD)
|
{
|
{
|
/* We've got a never load section inside one which
|
/* We've got a never load section inside one which
|
is going to be output, we'll change it into a
|
is going to be output, we'll change it into a
|
fill. */
|
fill. */
|
link_order->type = bfd_data_link_order;
|
link_order->type = bfd_data_link_order;
|
link_order->u.data.contents = (unsigned char *) "";
|
link_order->u.data.contents = (unsigned char *) "";
|
link_order->u.data.size = 1;
|
link_order->u.data.size = 1;
|
}
|
}
|
else
|
else
|
{
|
{
|
link_order->type = bfd_indirect_link_order;
|
link_order->type = bfd_indirect_link_order;
|
link_order->u.indirect.section = i;
|
link_order->u.indirect.section = i;
|
ASSERT (i->output_section == output_section);
|
ASSERT (i->output_section == output_section);
|
}
|
}
|
link_order->size = i->size;
|
link_order->size = i->size;
|
link_order->offset = i->output_offset;
|
link_order->offset = i->output_offset;
|
}
|
}
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case lang_padding_statement_enum:
|
case lang_padding_statement_enum:
|
/* Make a new link_order with the right filler */
|
/* Make a new link_order with the right filler */
|
{
|
{
|
asection *output_section;
|
asection *output_section;
|
struct bfd_link_order *link_order;
|
struct bfd_link_order *link_order;
|
|
|
output_section = statement->padding_statement.output_section;
|
output_section = statement->padding_statement.output_section;
|
ASSERT (statement->padding_statement.output_section->owner
|
ASSERT (statement->padding_statement.output_section->owner
|
== link_info.output_bfd);
|
== link_info.output_bfd);
|
if (((output_section->flags & SEC_HAS_CONTENTS) != 0
|
if (((output_section->flags & SEC_HAS_CONTENTS) != 0
|
|| ((output_section->flags & SEC_LOAD) != 0
|
|| ((output_section->flags & SEC_LOAD) != 0
|
&& (output_section->flags & SEC_THREAD_LOCAL)))
|
&& (output_section->flags & SEC_THREAD_LOCAL)))
|
&& (output_section->flags & SEC_NEVER_LOAD) == 0)
|
&& (output_section->flags & SEC_NEVER_LOAD) == 0)
|
{
|
{
|
link_order = bfd_new_link_order (link_info.output_bfd,
|
link_order = bfd_new_link_order (link_info.output_bfd,
|
output_section);
|
output_section);
|
link_order->type = bfd_data_link_order;
|
link_order->type = bfd_data_link_order;
|
link_order->size = statement->padding_statement.size;
|
link_order->size = statement->padding_statement.size;
|
link_order->offset = statement->padding_statement.output_offset;
|
link_order->offset = statement->padding_statement.output_offset;
|
link_order->u.data.contents = statement->padding_statement.fill->data;
|
link_order->u.data.contents = statement->padding_statement.fill->data;
|
link_order->u.data.size = statement->padding_statement.fill->size;
|
link_order->u.data.size = statement->padding_statement.fill->size;
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
default:
|
default:
|
/* All the other ones fall through */
|
/* All the other ones fall through */
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/* Return true if NAME is the name of an unsplittable section. These
|
/* Return true if NAME is the name of an unsplittable section. These
|
are the stabs strings, dwarf strings. */
|
are the stabs strings, dwarf strings. */
|
|
|
static bfd_boolean
|
static bfd_boolean
|
unsplittable_name (const char *name)
|
unsplittable_name (const char *name)
|
{
|
{
|
if (CONST_STRNEQ (name, ".stab"))
|
if (CONST_STRNEQ (name, ".stab"))
|
{
|
{
|
/* There are several stab like string sections. We pattern match on
|
/* There are several stab like string sections. We pattern match on
|
".stab...str" */
|
".stab...str" */
|
unsigned len = strlen (name);
|
unsigned len = strlen (name);
|
if (strcmp (&name[len-3], "str") == 0)
|
if (strcmp (&name[len-3], "str") == 0)
|
return TRUE;
|
return TRUE;
|
}
|
}
|
else if (strcmp (name, "$GDB_STRINGS$") == 0)
|
else if (strcmp (name, "$GDB_STRINGS$") == 0)
|
return TRUE;
|
return TRUE;
|
return FALSE;
|
return FALSE;
|
}
|
}
|
|
|
/* Wander around the input sections, make sure that
|
/* Wander around the input sections, make sure that
|
we'll never try and create an output section with more relocs
|
we'll never try and create an output section with more relocs
|
than will fit.. Do this by always assuming the worst case, and
|
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
|
#define TESTIT 1
|
static asection *
|
static asection *
|
clone_section (bfd *abfd, asection *s, const char *name, int *count)
|
clone_section (bfd *abfd, asection *s, const char *name, int *count)
|
{
|
{
|
char *tname;
|
char *tname;
|
char *sname;
|
char *sname;
|
unsigned int len;
|
unsigned int len;
|
asection *n;
|
asection *n;
|
struct bfd_link_hash_entry *h;
|
struct bfd_link_hash_entry *h;
|
|
|
/* Invent a section name from the section name and a dotted numeric
|
/* Invent a section name from the section name and a dotted numeric
|
suffix. */
|
suffix. */
|
len = strlen (name);
|
len = strlen (name);
|
tname = xmalloc (len + 1);
|
tname = xmalloc (len + 1);
|
memcpy (tname, name, len + 1);
|
memcpy (tname, name, len + 1);
|
/* Remove a dotted number suffix, from a previous split link. */
|
/* Remove a dotted number suffix, from a previous split link. */
|
while (len && ISDIGIT (tname[len-1]))
|
while (len && ISDIGIT (tname[len-1]))
|
len--;
|
len--;
|
if (len > 1 && tname[len-1] == '.')
|
if (len > 1 && tname[len-1] == '.')
|
/* It was a dotted number. */
|
/* It was a dotted number. */
|
tname[len-1] = 0;
|
tname[len-1] = 0;
|
|
|
/* We want to use the whole of the original section name for the
|
/* We want to use the whole of the original section name for the
|
split name, but coff can be restricted to 8 character names. */
|
split name, but coff can be restricted to 8 character names. */
|
if (bfd_family_coff (abfd) && strlen (tname) > 5)
|
if (bfd_family_coff (abfd) && strlen (tname) > 5)
|
{
|
{
|
/* Some section names cannot be truncated, as the name is
|
/* Some section names cannot be truncated, as the name is
|
used to locate some other section. */
|
used to locate some other section. */
|
if (CONST_STRNEQ (name, ".stab")
|
if (CONST_STRNEQ (name, ".stab")
|
|| strcmp (name, "$GDB_SYMBOLS$") == 0)
|
|| strcmp (name, "$GDB_SYMBOLS$") == 0)
|
{
|
{
|
einfo (_ ("%F%P: cannot create split section name for %s\n"), name);
|
einfo (_ ("%F%P: cannot create split section name for %s\n"), name);
|
/* Silence gcc warnings. einfo exits, so we never reach here. */
|
/* Silence gcc warnings. einfo exits, so we never reach here. */
|
return NULL;
|
return NULL;
|
}
|
}
|
tname[5] = 0;
|
tname[5] = 0;
|
}
|
}
|
|
|
if ((sname = bfd_get_unique_section_name (abfd, tname, count)) == NULL
|
if ((sname = bfd_get_unique_section_name (abfd, tname, count)) == NULL
|
|| (n = bfd_make_section_anyway (abfd, sname)) == NULL
|
|| (n = bfd_make_section_anyway (abfd, sname)) == NULL
|
|| (h = bfd_link_hash_lookup (link_info.hash,
|
|| (h = bfd_link_hash_lookup (link_info.hash,
|
sname, TRUE, TRUE, FALSE)) == NULL)
|
sname, TRUE, TRUE, FALSE)) == NULL)
|
{
|
{
|
einfo (_("%F%P: clone section failed: %E\n"));
|
einfo (_("%F%P: clone section failed: %E\n"));
|
/* Silence gcc warnings. einfo exits, so we never reach here. */
|
/* Silence gcc warnings. einfo exits, so we never reach here. */
|
return NULL;
|
return NULL;
|
}
|
}
|
free (tname);
|
free (tname);
|
|
|
/* Set up section symbol. */
|
/* Set up section symbol. */
|
h->type = bfd_link_hash_defined;
|
h->type = bfd_link_hash_defined;
|
h->u.def.value = 0;
|
h->u.def.value = 0;
|
h->u.def.section = n;
|
h->u.def.section = n;
|
|
|
n->flags = s->flags;
|
n->flags = s->flags;
|
n->vma = s->vma;
|
n->vma = s->vma;
|
n->user_set_vma = s->user_set_vma;
|
n->user_set_vma = s->user_set_vma;
|
n->lma = s->lma;
|
n->lma = s->lma;
|
n->size = 0;
|
n->size = 0;
|
n->output_offset = s->output_offset;
|
n->output_offset = s->output_offset;
|
n->output_section = n;
|
n->output_section = n;
|
n->orelocation = 0;
|
n->orelocation = 0;
|
n->reloc_count = 0;
|
n->reloc_count = 0;
|
n->alignment_power = s->alignment_power;
|
n->alignment_power = s->alignment_power;
|
return n;
|
return n;
|
}
|
}
|
|
|
#if TESTING
|
#if TESTING
|
static void
|
static void
|
ds (asection *s)
|
ds (asection *s)
|
{
|
{
|
struct bfd_link_order *l = s->map_head.link_order;
|
struct bfd_link_order *l = s->map_head.link_order;
|
printf ("vma %x size %x\n", s->vma, s->size);
|
printf ("vma %x size %x\n", s->vma, s->size);
|
while (l)
|
while (l)
|
{
|
{
|
if (l->type == bfd_indirect_link_order)
|
if (l->type == bfd_indirect_link_order)
|
{
|
{
|
printf ("%8x %s\n", l->offset, l->u.indirect.section->owner->filename);
|
printf ("%8x %s\n", l->offset, l->u.indirect.section->owner->filename);
|
}
|
}
|
else
|
else
|
{
|
{
|
printf (_("%8x something else\n"), l->offset);
|
printf (_("%8x something else\n"), l->offset);
|
}
|
}
|
l = l->next;
|
l = l->next;
|
}
|
}
|
printf ("\n");
|
printf ("\n");
|
}
|
}
|
|
|
dump (char *s, asection *a1, asection *a2)
|
dump (char *s, asection *a1, asection *a2)
|
{
|
{
|
printf ("%s\n", s);
|
printf ("%s\n", s);
|
ds (a1);
|
ds (a1);
|
ds (a2);
|
ds (a2);
|
}
|
}
|
|
|
static void
|
static void
|
sanity_check (bfd *abfd)
|
sanity_check (bfd *abfd)
|
{
|
{
|
asection *s;
|
asection *s;
|
for (s = abfd->sections; s; s = s->next)
|
for (s = abfd->sections; s; s = s->next)
|
{
|
{
|
struct bfd_link_order *p;
|
struct bfd_link_order *p;
|
bfd_vma prev = 0;
|
bfd_vma prev = 0;
|
for (p = s->map_head.link_order; p; p = p->next)
|
for (p = s->map_head.link_order; p; p = p->next)
|
{
|
{
|
if (p->offset > 100000)
|
if (p->offset > 100000)
|
abort ();
|
abort ();
|
if (p->offset < prev)
|
if (p->offset < prev)
|
abort ();
|
abort ();
|
prev = p->offset;
|
prev = p->offset;
|
}
|
}
|
}
|
}
|
}
|
}
|
#else
|
#else
|
#define sanity_check(a)
|
#define sanity_check(a)
|
#define dump(a, b, c)
|
#define dump(a, b, c)
|
#endif
|
#endif
|
|
|
static void
|
static void
|
split_sections (bfd *abfd, struct bfd_link_info *info)
|
split_sections (bfd *abfd, struct bfd_link_info *info)
|
{
|
{
|
asection *original_sec;
|
asection *original_sec;
|
int nsecs = abfd->section_count;
|
int nsecs = abfd->section_count;
|
sanity_check (abfd);
|
sanity_check (abfd);
|
/* Look through all the original sections. */
|
/* Look through all the original sections. */
|
for (original_sec = abfd->sections;
|
for (original_sec = abfd->sections;
|
original_sec && nsecs;
|
original_sec && nsecs;
|
original_sec = original_sec->next, nsecs--)
|
original_sec = original_sec->next, nsecs--)
|
{
|
{
|
int count = 0;
|
int count = 0;
|
unsigned int lines = 0;
|
unsigned int lines = 0;
|
unsigned int relocs = 0;
|
unsigned int relocs = 0;
|
bfd_size_type sec_size = 0;
|
bfd_size_type sec_size = 0;
|
struct bfd_link_order *l;
|
struct bfd_link_order *l;
|
struct bfd_link_order *p;
|
struct bfd_link_order *p;
|
bfd_vma vma = original_sec->vma;
|
bfd_vma vma = original_sec->vma;
|
asection *cursor = original_sec;
|
asection *cursor = original_sec;
|
|
|
/* Count up the relocations and line entries to see if anything
|
/* Count up the relocations and line entries to see if anything
|
would be too big to fit. Accumulate section size too. */
|
would be too big to fit. Accumulate section size too. */
|
for (l = NULL, p = cursor->map_head.link_order; p != NULL; p = l->next)
|
for (l = NULL, p = cursor->map_head.link_order; p != NULL; p = l->next)
|
{
|
{
|
unsigned int thislines = 0;
|
unsigned int thislines = 0;
|
unsigned int thisrelocs = 0;
|
unsigned int thisrelocs = 0;
|
bfd_size_type thissize = 0;
|
bfd_size_type thissize = 0;
|
if (p->type == bfd_indirect_link_order)
|
if (p->type == bfd_indirect_link_order)
|
{
|
{
|
asection *sec;
|
asection *sec;
|
|
|
sec = p->u.indirect.section;
|
sec = p->u.indirect.section;
|
|
|
if (info->strip == strip_none
|
if (info->strip == strip_none
|
|| info->strip == strip_some)
|
|| info->strip == strip_some)
|
thislines = sec->lineno_count;
|
thislines = sec->lineno_count;
|
|
|
if (info->relocatable)
|
if (info->relocatable)
|
thisrelocs = sec->reloc_count;
|
thisrelocs = sec->reloc_count;
|
|
|
thissize = sec->size;
|
thissize = sec->size;
|
|
|
}
|
}
|
else if (info->relocatable
|
else if (info->relocatable
|
&& (p->type == bfd_section_reloc_link_order
|
&& (p->type == bfd_section_reloc_link_order
|
|| p->type == bfd_symbol_reloc_link_order))
|
|| p->type == bfd_symbol_reloc_link_order))
|
thisrelocs++;
|
thisrelocs++;
|
|
|
if (l != NULL
|
if (l != NULL
|
&& (thisrelocs + relocs >= config.split_by_reloc
|
&& (thisrelocs + relocs >= config.split_by_reloc
|
|| thislines + lines >= config.split_by_reloc
|
|| thislines + lines >= config.split_by_reloc
|
|| (thissize + sec_size >= config.split_by_file))
|
|| (thissize + sec_size >= config.split_by_file))
|
&& !unsplittable_name (cursor->name))
|
&& !unsplittable_name (cursor->name))
|
{
|
{
|
/* Create a new section and put this link order and the
|
/* Create a new section and put this link order and the
|
following link orders into it. */
|
following link orders into it. */
|
bfd_vma shift_offset;
|
bfd_vma shift_offset;
|
asection *n;
|
asection *n;
|
|
|
n = clone_section (abfd, cursor, original_sec->name, &count);
|
n = clone_section (abfd, cursor, original_sec->name, &count);
|
|
|
/* Attach the link orders to the new section and snip
|
/* Attach the link orders to the new section and snip
|
them off from the old section. */
|
them off from the old section. */
|
n->map_head.link_order = p;
|
n->map_head.link_order = p;
|
n->map_tail.link_order = cursor->map_tail.link_order;
|
n->map_tail.link_order = cursor->map_tail.link_order;
|
cursor->map_tail.link_order = l;
|
cursor->map_tail.link_order = l;
|
l->next = NULL;
|
l->next = NULL;
|
l = p;
|
l = p;
|
|
|
/* Change the size of the original section and
|
/* Change the size of the original section and
|
update the vma of the new one. */
|
update the vma of the new one. */
|
|
|
dump ("before snip", cursor, n);
|
dump ("before snip", cursor, n);
|
|
|
shift_offset = p->offset;
|
shift_offset = p->offset;
|
n->size = cursor->size - shift_offset;
|
n->size = cursor->size - shift_offset;
|
cursor->size = shift_offset;
|
cursor->size = shift_offset;
|
|
|
vma += shift_offset;
|
vma += shift_offset;
|
n->lma = n->vma = vma;
|
n->lma = n->vma = vma;
|
|
|
/* Run down the chain and change the output section to
|
/* Run down the chain and change the output section to
|
the right one, update the offsets too. */
|
the right one, update the offsets too. */
|
do
|
do
|
{
|
{
|
p->offset -= shift_offset;
|
p->offset -= shift_offset;
|
if (p->type == bfd_indirect_link_order)
|
if (p->type == bfd_indirect_link_order)
|
{
|
{
|
p->u.indirect.section->output_section = n;
|
p->u.indirect.section->output_section = n;
|
p->u.indirect.section->output_offset = p->offset;
|
p->u.indirect.section->output_offset = p->offset;
|
}
|
}
|
p = p->next;
|
p = p->next;
|
}
|
}
|
while (p);
|
while (p);
|
|
|
dump ("after snip", cursor, n);
|
dump ("after snip", cursor, n);
|
cursor = n;
|
cursor = n;
|
relocs = thisrelocs;
|
relocs = thisrelocs;
|
lines = thislines;
|
lines = thislines;
|
sec_size = thissize;
|
sec_size = thissize;
|
}
|
}
|
else
|
else
|
{
|
{
|
l = p;
|
l = p;
|
relocs += thisrelocs;
|
relocs += thisrelocs;
|
lines += thislines;
|
lines += thislines;
|
sec_size += thissize;
|
sec_size += thissize;
|
}
|
}
|
}
|
}
|
}
|
}
|
sanity_check (abfd);
|
sanity_check (abfd);
|
}
|
}
|
|
|
/* Call BFD to write out the linked file. */
|
/* Call BFD to write out the linked file. */
|
|
|
void
|
void
|
ldwrite (void)
|
ldwrite (void)
|
{
|
{
|
/* Reset error indicator, which can typically something like invalid
|
/* Reset error indicator, which can typically something like invalid
|
format from opening up the .o files. */
|
format from opening up the .o files. */
|
bfd_set_error (bfd_error_no_error);
|
bfd_set_error (bfd_error_no_error);
|
lang_for_each_statement (build_link_order);
|
lang_for_each_statement (build_link_order);
|
|
|
if (config.split_by_reloc != (unsigned) -1
|
if (config.split_by_reloc != (unsigned) -1
|
|| config.split_by_file != (bfd_size_type) -1)
|
|| config.split_by_file != (bfd_size_type) -1)
|
split_sections (link_info.output_bfd, &link_info);
|
split_sections (link_info.output_bfd, &link_info);
|
if (!bfd_final_link (link_info.output_bfd, &link_info))
|
if (!bfd_final_link (link_info.output_bfd, &link_info))
|
{
|
{
|
/* If there was an error recorded, print it out. Otherwise assume
|
/* If there was an error recorded, print it out. Otherwise assume
|
an appropriate error message like unknown symbol was printed
|
an appropriate error message like unknown symbol was printed
|
out. */
|
out. */
|
|
|
if (bfd_get_error () != bfd_error_no_error)
|
if (bfd_get_error () != bfd_error_no_error)
|
einfo (_("%F%P: final link failed: %E\n"));
|
einfo (_("%F%P: final link failed: %E\n"));
|
else
|
else
|
xexit (1);
|
xexit (1);
|
}
|
}
|
}
|
}
|
|
|
