ea8c7ac7d0
This is a greatly pared down version of the full gdb-4.12, all the config stuff has been removed and the supporting libraries have been stripped to a minimum. This is a 1.1.5 only port, I'll do a more complete port for 2.0 which will have all the config stuff and will install the gnu support libraries as system libraries like we do for readline. There wasn't much point for 1.1.5 since only gdb would use them so I went for saving space instead. For 2.0 I'll config all the other gnu tools to use them as well.
186 lines
4.8 KiB
C
186 lines
4.8 KiB
C
/* seclet.c
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Copyright (C) 1992, 1993 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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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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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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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 this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This module is part of BFD */
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/* The intention is that one day, all the code which uses sections
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will change and use seclets instead - maybe seglet would have been
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a better name..
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Anyway, a seclet contains enough info to be able to describe an
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area of output memory in one go.
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The only description so far catered for is that of the
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<<bfd_indirect_seclet>>, which is a select which points to a
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<<section>> and the <<asymbols>> associated with the section, so
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that relocation can be done when needed.
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One day there will be more types - they will at least migrate from
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the linker's data structures - also there could be extra stuff,
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like a bss seclet, which descibes a lump of memory as containing
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zeros compactly, without the horrible SEC_* flag cruft.
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "seclet.h"
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#include "coff/internal.h"
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/* Create a new seclet and attach it to a section. */
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bfd_seclet_type *
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DEFUN(bfd_new_seclet,(abfd, section),
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bfd *abfd AND
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asection *section)
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{
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bfd_seclet_type *n = (bfd_seclet_type *)bfd_alloc(abfd, sizeof(bfd_seclet_type));
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if (section->seclets_tail != (bfd_seclet_type *)NULL) {
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section->seclets_tail->next = n;
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}
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else
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{
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section->seclets_head = n;
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}
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section->seclets_tail = n;
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return n;
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}
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/* Given an indirect seclet which points to an input section, relocate
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the contents of the seclet and put the data in its final
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destination. */
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static boolean
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DEFUN(rel,(abfd, seclet, output_section, data, relocateable),
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bfd *abfd AND
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bfd_seclet_type *seclet AND
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asection *output_section AND
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PTR data AND
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boolean relocateable)
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{
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if ((output_section->flags & SEC_HAS_CONTENTS) != 0
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&& seclet->size)
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{
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data = (PTR) bfd_get_relocated_section_contents(abfd, seclet, data,
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relocateable);
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if(bfd_set_section_contents(abfd,
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output_section,
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data,
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seclet->offset,
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seclet->size) == false)
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{
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abort();
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}
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}
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return true;
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}
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/* Put the contents of a seclet in its final destination. */
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static boolean
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DEFUN(seclet_dump_seclet,(abfd, seclet, section, data, relocateable),
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bfd *abfd AND
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bfd_seclet_type *seclet AND
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asection *section AND
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PTR data AND
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boolean relocateable)
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{
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switch (seclet->type)
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{
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case bfd_indirect_seclet:
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/* The contents of this section come from another one somewhere
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else */
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return rel(abfd, seclet, section, data, relocateable);
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case bfd_fill_seclet:
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/* Fill in the section with us */
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{
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char *d = bfd_xmalloc(seclet->size);
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unsigned int i;
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for (i =0; i < seclet->size; i+=2) {
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d[i] = seclet->u.fill.value >> 8;
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}
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for (i = 1; i < seclet->size; i+=2) {
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d[i] = seclet->u.fill.value ;
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}
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/* Don't bother to fill in empty sections */
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if (!(bfd_get_section_flags(abfd, section) & SEC_HAS_CONTENTS))
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{
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return true;
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}
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return bfd_set_section_contents(abfd, section, d, seclet->offset,
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seclet->size);
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}
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default:
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abort();
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}
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return true;
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}
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/*
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INTERNAL_FUNCTION
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bfd_generic_seclet_link
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SYNOPSIS
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boolean bfd_generic_seclet_link
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(bfd *abfd,
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PTR data,
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boolean relocateable);
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DESCRIPTION
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The generic seclet linking routine. The caller should have
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set up seclets for all the output sections. The DATA argument
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should point to a memory area large enough to hold the largest
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section. This function looks through the seclets and moves
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the contents into the output sections. If RELOCATEABLE is
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true, the orelocation fields of the output sections must
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already be initialized.
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*/
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boolean
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DEFUN(bfd_generic_seclet_link,(abfd, data, relocateable),
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bfd *abfd AND
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PTR data AND
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boolean relocateable)
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{
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asection *o = abfd->sections;
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while (o != (asection *)NULL)
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{
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bfd_seclet_type *p = o->seclets_head;
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while (p != (bfd_seclet_type *)NULL)
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{
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if (seclet_dump_seclet(abfd, p, o, data, relocateable) == false)
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return false;
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p = p ->next;
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}
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o = o->next;
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}
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return true;
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}
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