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/* seclet.c
Copyright (C) 1992 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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. */
/* This module is part of BFD */
/* The intention is that one day, all the code which uses sections
will change and use seclets instead - maybe seglet would have been
a better name..
Anyway, a seclet contains enough info to be able to describe an
area of output memory in one go.
The only description so far catered for is that of the
<<bfd_indirect_seclet>>, which is a select which points to a
<<section>> and the <<asymbols>> associated with the section, so
that relocation can be done when needed.
One day there will be more types - they will at least migrate from
the linker's data structures - also there could be extra stuff,
like a bss seclet, which descibes a lump of memory as containing
zeros compactly, without the horrible SEC_* flag cruft.
*/
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "seclet.h"
#include "coff/internal.h"
bfd_seclet_type *
DEFUN(bfd_new_seclet,(abfd, section),
bfd *abfd AND
asection *section)
{
bfd_seclet_type *n = (bfd_seclet_type *)bfd_alloc(abfd, sizeof(bfd_seclet_type));
if (section->seclets_tail != (bfd_seclet_type *)NULL) {
section->seclets_tail->next = n;
}
else
{
section->seclets_head = n;
}
section->seclets_tail = n;
return n;
}
#define MAX_ERRORS_IN_A_ROW 10
extern bfd_error_vector_type bfd_error_vector;
void
DEFUN(rel,(abfd, seclet, output_section, data),
bfd *abfd AND
bfd_seclet_type *seclet AND
asection *output_section AND
PTR data)
{
if (output_section->flags & SEC_HAS_CONTENTS
&& !(output_section->flags & SEC_NEVER_LOAD)
&& (output_section->flags & SEC_LOAD)
&& seclet->size)
{
data = (PTR) bfd_get_relocated_section_contents(abfd, seclet, data);
if(bfd_set_section_contents(abfd,
output_section,
data,
seclet->offset,
seclet->size) == false)
{
abort();
}
}
}
void
DEFUN(seclet_dump_seclet,(abfd, seclet, section, data),
bfd *abfd AND
bfd_seclet_type *seclet AND
asection *section AND
PTR data)
{
switch (seclet->type)
{
case bfd_indirect_seclet:
/* The contents of this section come from another one somewhere
else */
rel(abfd, seclet, section, data);
break;
case bfd_fill_seclet:
/* Fill in the section with us */
{
char *d = malloc(seclet->size);
unsigned int i;
for (i =0; i < seclet->size; i+=2) {
d[i] = seclet->u.fill.value >> 8;
}
for (i = 1; i < seclet->size; i+=2) {
d[i] = seclet->u.fill.value ;
}
bfd_set_section_contents(abfd, section, d, seclet->offset, seclet->size);
}
break;
default:
abort();
}
}
void
DEFUN(seclet_dump,(abfd, data),
bfd *abfd AND
PTR data)
{
/* Write all the seclets on the bfd out, relocate etc according to the
rules */
asection *o = abfd->sections;
while (o != (asection *)NULL)
{
bfd_seclet_type *p = o->seclets_head;
while (p != (bfd_seclet_type *)NULL)
{
seclet_dump_seclet(abfd, p, o, data);
p = p ->next;
}
o = o->next;
}
}
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