1999-05-03 09:29:11 +02:00
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/* obj-format for ieee-695 records.
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2000-08-01 21:02:49 +02:00
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Copyright (C) 1991, 92, 93, 94, 95, 97, 98, 2000
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Free Software Foundation, Inc.
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1999-05-03 09:29:11 +02:00
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This file is part of GAS, the GNU Assembler.
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GAS 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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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS 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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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2000-08-01 21:02:49 +02:00
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02111-1307, USA. */
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1999-05-03 09:29:11 +02:00
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2000-08-01 21:02:49 +02:00
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/* Created by Steve Chamberlain <steve@cygnus.com>. */
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1999-05-03 09:29:11 +02:00
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2000-08-01 21:02:49 +02:00
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/* This will hopefully become the port through which bfd and gas talk,
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for the moment, only ieee is known to work well. */
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1999-05-03 09:29:11 +02:00
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#include "bfd.h"
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#include "as.h"
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#include "subsegs.h"
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#include "output-file.h"
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#include "frags.h"
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bfd *abfd;
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2000-08-01 21:02:49 +02:00
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/* How many addresses does the .align take? */
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1999-05-03 09:29:11 +02:00
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static relax_addressT
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relax_align (address, alignment)
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2000-08-01 21:02:49 +02:00
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/* Address now. */
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register relax_addressT address;
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/* Alignment (binary). */
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register long alignment;
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1999-05-03 09:29:11 +02:00
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{
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relax_addressT mask;
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relax_addressT new_address;
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mask = ~((~0) << alignment);
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new_address = (address + mask) & (~mask);
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return (new_address - address);
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2000-08-01 21:02:49 +02:00
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}
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/* Calculate the size of the frag chain
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and create a bfd section to contain all of it. */
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1999-05-03 09:29:11 +02:00
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static void
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2000-06-25 19:59:22 +02:00
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size_section (abfd, idx)
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2000-08-01 21:02:49 +02:00
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bfd *abfd;
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2000-06-25 19:59:22 +02:00
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unsigned int idx;
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1999-05-03 09:29:11 +02:00
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{
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asection *sec;
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unsigned int size = 0;
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fragS *frag = segment_info[idx].frag_root;
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2000-08-01 21:02:49 +02:00
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1999-05-03 09:29:11 +02:00
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while (frag)
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{
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if (frag->fr_address != size)
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{
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printf (_("Out of step\n"));
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size = frag->fr_address;
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}
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size += frag->fr_fix;
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switch (frag->fr_type)
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{
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case rs_fill:
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case rs_org:
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size += frag->fr_offset * frag->fr_var;
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break;
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case rs_align:
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case rs_align_code:
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{
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addressT off;
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off = relax_align (size, frag->fr_offset);
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if (frag->fr_subtype != 0 && off > frag->fr_subtype)
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off = 0;
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size += off;
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}
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}
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frag = frag->fr_next;
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}
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if (size)
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{
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char *name = segment_info[idx].name;
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2000-08-01 21:02:49 +02:00
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1999-05-03 09:29:11 +02:00
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if (name == (char *) NULL)
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2000-08-01 21:02:49 +02:00
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name = ".data";
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segment_info[idx].user_stuff =
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(char *) (sec = bfd_make_section (abfd, name));
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/* Make it output through itself. */
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1999-05-03 09:29:11 +02:00
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sec->output_section = sec;
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sec->flags |= SEC_HAS_CONTENTS;
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bfd_set_section_size (abfd, sec, size);
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}
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}
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2000-08-01 21:02:49 +02:00
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/* Run through a frag chain and write out the data to go with it. */
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1999-05-03 09:29:11 +02:00
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static void
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2000-06-25 19:59:22 +02:00
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fill_section (abfd, idx)
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2000-08-01 21:02:49 +02:00
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bfd *abfd;
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2000-06-25 19:59:22 +02:00
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unsigned int idx;
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1999-05-03 09:29:11 +02:00
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{
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asection *sec = segment_info[idx].user_stuff;
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2000-08-01 21:02:49 +02:00
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1999-05-03 09:29:11 +02:00
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if (sec)
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{
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fragS *frag = segment_info[idx].frag_root;
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unsigned int offset = 0;
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while (frag)
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{
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unsigned int fill_size;
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unsigned int count;
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switch (frag->fr_type)
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{
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case rs_fill:
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case rs_align:
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case rs_org:
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if (frag->fr_fix)
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{
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bfd_set_section_contents (abfd,
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sec,
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frag->fr_literal,
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frag->fr_address,
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frag->fr_fix);
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}
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offset += frag->fr_fix;
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fill_size = frag->fr_var;
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if (fill_size)
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{
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unsigned int off = frag->fr_fix;
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for (count = frag->fr_offset; count; count--)
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{
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bfd_set_section_contents (abfd, sec,
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frag->fr_literal +
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frag->fr_fix,
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frag->fr_address + off,
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fill_size);
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off += fill_size;
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}
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}
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break;
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default:
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abort ();
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}
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frag = frag->fr_next;
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}
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}
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}
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2000-08-01 21:02:49 +02:00
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/* Count the relocations in a chain. */
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1999-05-03 09:29:11 +02:00
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static unsigned int
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2000-06-25 19:59:22 +02:00
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count_entries_in_chain (idx)
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unsigned int idx;
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1999-05-03 09:29:11 +02:00
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{
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unsigned int nrelocs;
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fixS *fixup_ptr;
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2000-08-01 21:02:49 +02:00
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/* Count the relocations. */
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1999-05-03 09:29:11 +02:00
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fixup_ptr = segment_info[idx].fix_root;
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nrelocs = 0;
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while (fixup_ptr != (fixS *) NULL)
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{
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fixup_ptr = fixup_ptr->fx_next;
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nrelocs++;
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}
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return nrelocs;
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}
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2000-08-01 21:02:49 +02:00
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/* Output all the relocations for a section. */
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1999-05-03 09:29:11 +02:00
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void
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2000-06-25 19:59:22 +02:00
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do_relocs_for (idx)
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unsigned int idx;
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1999-05-03 09:29:11 +02:00
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{
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unsigned int nrelocs;
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arelent **reloc_ptr_vector;
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arelent *reloc_vector;
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asymbol **ptrs;
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asection *section = (asection *) (segment_info[idx].user_stuff);
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unsigned int i;
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fixS *from;
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2000-08-01 21:02:49 +02:00
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1999-05-03 09:29:11 +02:00
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if (section)
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{
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nrelocs = count_entries_in_chain (idx);
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2000-08-01 21:02:49 +02:00
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reloc_ptr_vector =
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(arelent **) malloc ((nrelocs + 1) * sizeof (arelent *));
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1999-05-03 09:29:11 +02:00
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reloc_vector = (arelent *) malloc (nrelocs * sizeof (arelent));
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ptrs = (asymbol **) malloc (nrelocs * sizeof (asymbol *));
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from = segment_info[idx].fix_root;
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for (i = 0; i < nrelocs; i++)
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{
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arelent *to = reloc_vector + i;
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asymbol *s;
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reloc_ptr_vector[i] = to;
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to->howto = (reloc_howto_type *) (from->fx_r_type);
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2000-08-01 21:02:49 +02:00
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#if 0
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/* We can't represent complicated things in a reloc yet. */
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if (from->fx_addsy == 0 || from->fx_subsy != 0)
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abort ();
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1999-05-03 09:29:11 +02:00
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#endif
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s = &(from->fx_addsy->sy_symbol.sy);
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to->address = ((char *) (from->fx_frag->fr_address +
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from->fx_where))
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- ((char *) (&(from->fx_frag->fr_literal)));
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to->addend = from->fx_offset;
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/* If we know the symbol which we want to relocate to, turn
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this reloaction into a section relative.
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If this relocation is pcrelative, and we know the
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destination, we still want to keep the relocation - since
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the linker might relax some of the bytes, but it stops
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2000-08-01 21:02:49 +02:00
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being pc relative and turns into an absolute relocation. */
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1999-05-03 09:29:11 +02:00
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if (s)
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{
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if ((s->flags & BSF_UNDEFINED) == 0)
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{
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to->section = s->section;
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/* We can refer directly to the value field here,
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rather than using S_GET_VALUE, because this is
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only called after do_symbols, which sets up the
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value field. */
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to->addend += s->value;
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to->sym_ptr_ptr = 0;
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if (to->howto->pcrel_offset)
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2000-08-01 21:02:49 +02:00
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/* This is a pcrel relocation, the addend should
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be adjusted. */
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to->addend -= to->address + 1;
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1999-05-03 09:29:11 +02:00
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}
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else
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{
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to->section = 0;
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*ptrs = &(from->fx_addsy->sy_symbol.sy);
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to->sym_ptr_ptr = ptrs;
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if (to->howto->pcrel_offset)
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2000-08-01 21:02:49 +02:00
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/* This is a pcrel relocation, the addend should
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be adjusted. */
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to->addend -= to->address - 1;
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1999-05-03 09:29:11 +02:00
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}
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}
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else
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2000-08-01 21:02:49 +02:00
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to->section = 0;
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1999-05-03 09:29:11 +02:00
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ptrs++;
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from = from->fx_next;
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}
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2000-08-01 21:02:49 +02:00
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/* Attatch to the section. */
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1999-05-03 09:29:11 +02:00
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section->orelocation = reloc_ptr_vector;
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section->reloc_count = nrelocs;
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section->flags |= SEC_LOAD;
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}
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}
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2000-08-01 21:02:49 +02:00
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/* Do the symbols. */
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1999-05-03 09:29:11 +02:00
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static void
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2000-06-25 19:59:22 +02:00
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do_symbols (abfd)
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2000-08-01 21:02:49 +02:00
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bfd *abfd;
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1999-05-03 09:29:11 +02:00
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{
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extern symbolS *symbol_rootP;
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symbolS *ptr;
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asymbol **symbol_ptr_vec;
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asymbol *symbol_vec;
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unsigned int count = 0;
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unsigned int index;
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for (ptr = symbol_rootP;
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ptr != (symbolS *) NULL;
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ptr = ptr->sy_next)
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{
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if (SEG_NORMAL (ptr->sy_symbol.seg))
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{
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ptr->sy_symbol.sy.section =
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(asection *) (segment_info[ptr->sy_symbol.seg].user_stuff);
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S_SET_VALUE (ptr, S_GET_VALUE (ptr) + ptr->sy_frag->fr_address);
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if (ptr->sy_symbol.sy.flags == 0)
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2000-08-01 21:02:49 +02:00
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ptr->sy_symbol.sy.flags = BSF_LOCAL;
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1999-05-03 09:29:11 +02:00
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}
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else
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{
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switch (ptr->sy_symbol.seg)
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{
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case SEG_ABSOLUTE:
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ptr->sy_symbol.sy.flags |= BSF_ABSOLUTE;
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ptr->sy_symbol.sy.section = 0;
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break;
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case SEG_UNKNOWN:
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ptr->sy_symbol.sy.flags = BSF_UNDEFINED;
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ptr->sy_symbol.sy.section = 0;
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break;
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default:
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abort ();
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}
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}
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ptr->sy_symbol.sy.value = S_GET_VALUE (ptr);
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count++;
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}
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symbol_ptr_vec = (asymbol **) malloc ((count + 1) * sizeof (asymbol *));
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index = 0;
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for (ptr = symbol_rootP;
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ptr != (symbolS *) NULL;
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ptr = ptr->sy_next)
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{
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symbol_ptr_vec[index] = &(ptr->sy_symbol.sy);
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index++;
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}
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symbol_ptr_vec[index] = 0;
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abfd->outsymbols = symbol_ptr_vec;
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abfd->symcount = count;
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}
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/* The generic as->bfd converter. Other backends may have special case
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2000-08-01 21:02:49 +02:00
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code. */
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1999-05-03 09:29:11 +02:00
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void
|
2000-06-25 19:59:22 +02:00
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bfd_as_write_hook ()
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1999-05-03 09:29:11 +02:00
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{
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int i;
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for (i = SEG_E0; i < SEG_UNKNOWN; i++)
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2000-08-01 21:02:49 +02:00
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size_section (abfd, i);
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1999-05-03 09:29:11 +02:00
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for (i = SEG_E0; i < SEG_UNKNOWN; i++)
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|
|
fill_section (abfd, i);
|
|
|
|
|
|
|
|
do_symbols (abfd);
|
|
|
|
|
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
|
|
do_relocs_for (i);
|
|
|
|
}
|
|
|
|
|
|
|
|
S_SET_SEGMENT (x, y)
|
|
|
|
symbolS *x;
|
|
|
|
int y;
|
|
|
|
{
|
|
|
|
x->sy_symbol.seg = y;
|
|
|
|
}
|
|
|
|
|
|
|
|
S_IS_DEFINED (x)
|
|
|
|
symbolS *x;
|
|
|
|
{
|
|
|
|
if (SEG_NORMAL (x->sy_symbol.seg))
|
|
|
|
{
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
switch (x->sy_symbol.seg)
|
|
|
|
{
|
|
|
|
case SEG_UNKNOWN:
|
|
|
|
return 0;
|
|
|
|
default:
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
S_IS_EXTERNAL (x)
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
S_GET_DESC (x)
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
S_GET_SEGMENT (x)
|
|
|
|
symbolS *x;
|
|
|
|
{
|
|
|
|
return x->sy_symbol.seg;
|
|
|
|
}
|
|
|
|
|
|
|
|
S_SET_EXTERNAL (x)
|
|
|
|
symbolS *x;
|
|
|
|
{
|
|
|
|
x->sy_symbol.sy.flags |= BSF_GLOBAL | BSF_EXPORT;
|
|
|
|
}
|
|
|
|
|
|
|
|
S_SET_NAME (x, y)
|
|
|
|
symbolS *x;
|
|
|
|
char *y;
|
|
|
|
{
|
|
|
|
x->sy_symbol.sy.name = y;
|
|
|
|
}
|
|
|
|
|
|
|
|
S_GET_OTHER (x)
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
S_IS_DEBUG (x)
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef segment_name
|
|
|
|
char *
|
|
|
|
segment_name ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_read_begin_hook ()
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_ieee_section (ignore)
|
|
|
|
int ignore;
|
|
|
|
{
|
|
|
|
extern char *input_line_pointer;
|
|
|
|
extern char is_end_of_line[];
|
|
|
|
char *p = input_line_pointer;
|
|
|
|
char *s = p;
|
|
|
|
int i;
|
2000-08-01 21:02:49 +02:00
|
|
|
|
|
|
|
/* Look up the name, if it doesn't exist, make it. */
|
1999-05-03 09:29:11 +02:00
|
|
|
while (*p && *p != ' ' && *p != ',' && !is_end_of_line[*p])
|
|
|
|
{
|
|
|
|
p++;
|
|
|
|
}
|
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
|
|
{
|
|
|
|
if (segment_info[i].hadone)
|
|
|
|
{
|
|
|
|
if (strncmp (segment_info[i].name, s, p - s) == 0)
|
2000-08-01 21:02:49 +02:00
|
|
|
goto ok;
|
1999-05-03 09:29:11 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == SEG_UNKNOWN)
|
|
|
|
{
|
|
|
|
as_bad (_("too many sections"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
segment_info[i].hadone = 1;
|
|
|
|
segment_info[i].name = malloc (p - s + 1);
|
|
|
|
memcpy (segment_info[i].name, s, p - s);
|
|
|
|
segment_info[i].name[p - s] = 0;
|
|
|
|
ok:
|
|
|
|
subseg_set (i, 0);
|
|
|
|
while (!is_end_of_line[*p])
|
|
|
|
p++;
|
|
|
|
input_line_pointer = p;
|
|
|
|
}
|
|
|
|
|
|
|
|
void cons ();
|
|
|
|
void s_ignore ();
|
|
|
|
|
|
|
|
void s_globl ();
|
|
|
|
const pseudo_typeS obj_pseudo_table[] =
|
|
|
|
{
|
|
|
|
{"section", obj_ieee_section, 0},
|
2000-08-01 21:02:49 +02:00
|
|
|
{"data.b" , cons , 1},
|
|
|
|
{"data.w" , cons , 2},
|
|
|
|
{"data.l" , cons , 4},
|
|
|
|
{"export" , s_globl , 0},
|
|
|
|
{"option" , s_ignore , 0},
|
|
|
|
{"end" , s_ignore , 0},
|
|
|
|
{"import" , s_ignore , 0},
|
|
|
|
{"sdata" , stringer , 0},
|
1999-05-03 09:29:11 +02:00
|
|
|
0,
|
|
|
|
};
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_symbol_new_hook (symbolP)
|
|
|
|
symbolS *symbolP;
|
|
|
|
{
|
|
|
|
symbolP->sy_symbol.sy.the_bfd = abfd;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if 1
|
|
|
|
extern void
|
2000-06-25 19:59:22 +02:00
|
|
|
write_object_file ()
|
1999-05-03 09:29:11 +02:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
struct frchain *frchain_ptr;
|
|
|
|
struct frag *frag_ptr;
|
|
|
|
|
|
|
|
abfd = bfd_openw (out_file_name, "ieee");
|
|
|
|
|
|
|
|
if (abfd == 0)
|
|
|
|
{
|
|
|
|
as_perror (_("FATAL: Can't create %s"), out_file_name);
|
|
|
|
exit (EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
bfd_set_format (abfd, bfd_object);
|
|
|
|
bfd_set_arch_mach (abfd, bfd_arch_h8300, 0);
|
|
|
|
subseg_set (1, 0);
|
|
|
|
subseg_set (2, 0);
|
|
|
|
subseg_set (3, 0);
|
|
|
|
for (frchain_ptr = frchain_root;
|
|
|
|
frchain_ptr != (struct frchain *) NULL;
|
|
|
|
frchain_ptr = frchain_ptr->frch_next)
|
|
|
|
{
|
2000-08-01 21:02:49 +02:00
|
|
|
/* Run through all the sub-segments and align them up. Also
|
|
|
|
close any open frags. We tack a .fill onto the end of the
|
|
|
|
frag chain so that any .align's size can be worked by looking
|
|
|
|
at the next frag. */
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
|
|
|
|
#ifndef SUB_SEGMENT_ALIGN
|
|
|
|
#define SUB_SEGMENT_ALIGN(SEG) 2
|
|
|
|
#endif
|
|
|
|
frag_align (SUB_SEGMENT_ALIGN (now_seg), 0, 0);
|
|
|
|
frag_wane (frag_now);
|
|
|
|
frag_now->fr_fix = 0;
|
|
|
|
know (frag_now->fr_next == NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now build one big frag chain for each segment, linked through
|
2000-08-01 21:02:49 +02:00
|
|
|
fr_next. */
|
1999-05-03 09:29:11 +02:00
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
|
|
{
|
|
|
|
fragS **prev_frag_ptr_ptr;
|
|
|
|
struct frchain *next_frchain_ptr;
|
|
|
|
|
2000-08-01 21:02:49 +02:00
|
|
|
#if 0
|
|
|
|
struct frag **head_ptr = segment_info[i].frag_root;
|
|
|
|
#endif
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
segment_info[i].frag_root = segment_info[i].frchainP->frch_root;
|
|
|
|
#if 0
|
2000-08-01 21:02:49 +02:00
|
|
|
/* I'm not sure what this is for. */
|
1999-05-03 09:29:11 +02:00
|
|
|
for (frchain_ptr = segment_info[i].frchainP->frch_root;
|
|
|
|
frchain_ptr != (struct frchain *) NULL;
|
|
|
|
frchain_ptr = frchain_ptr->frch_next)
|
|
|
|
{
|
|
|
|
*head_ptr = frchain_ptr;
|
|
|
|
head_ptr = &frchain_ptr->next;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
2000-08-01 21:02:49 +02:00
|
|
|
relax_segment (segment_info[i].frag_root, i);
|
1999-05-03 09:29:11 +02:00
|
|
|
|
2000-08-01 21:02:49 +02:00
|
|
|
/* Now the addresses of the frags are correct within the segment. */
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
bfd_as_write_hook ();
|
|
|
|
bfd_close (abfd);
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
H_SET_TEXT_SIZE (a, b)
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_GET_TEXT_SIZE ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_SET_BSS_SIZE ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_SET_STRING_SIZE ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_SET_RELOCATION_SIZE ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_SET_MAGIC_NUMBER ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_GET_FILE_SIZE ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
H_GET_TEXT_RELOCATION_SIZE ()
|
|
|
|
{
|
|
|
|
abort ();
|
|
|
|
}
|