4.4BSD/usr/src/contrib/gdb-4.7.lbl/bfd/coff-z8k.c
/* BFD back-end for Zilog Z800n COFF binaries.
Copyright 1992 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Written by Steve Chamberlain, <sac@cygnus.com>.
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. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "obstack.h"
#include "coff/z8k.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "seclet.h"
extern bfd_error_vector_type bfd_error_vector;
/* Dummy for now */
static bfd_reloc_status_type
DEFUN(func_da, (abfd, reloc_entry, symbol, data, input_section, output_bfd),
bfd *abfd AND
arelent *reloc_entry AND
struct symbol_cache_entry *symbol AND
PTR data AND
asection *input_section AND
bfd *output_bfd)
{
}
/* Dummy for now */
static bfd_reloc_status_type
DEFUN(func_jr, (abfd, reloc_entry, symbol, data, input_section, output_bfd),
bfd *abfd AND
arelent *reloc_entry AND
struct symbol_cache_entry *symbol AND
PTR data AND
asection *input_section AND
bfd *output_bfd)
{
}
static reloc_howto_type r_da =
HOWTO(R_DA , 0, 1, 16, false, 0, true,
true,func_da,"r_da", true, 0x0000ffff,0x0000ffff, false);
static reloc_howto_type r_jr =
HOWTO(R_JR, 0,1,8,true,0,true,true,func_jr,"r_jr", true,0,0,true);
/* Turn a howto into a reloc number */
static int coff_z8k_select_reloc(howto)
reloc_howto_type *howto;
{
return howto->type;
}
#define SELECT_RELOC(x,howto) x= coff_z8k_select_reloc(howto)
#define BADMAG(x) Z8KBADMAG(x)
#define Z8K 1 /* Customize coffcode.h */
#define __A_MAGIC_SET__
/* Code to swap in the reloc */
#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
dst->r_stuff[0] = 'S'; \
dst->r_stuff[1] = 'C';
/* Code to turn a r_type into a howto ptr, uses the above howto table
*/
static void
DEFUN(rtype2howto,(internal, dst),
arelent *internal AND
struct internal_reloc *dst)
{
switch (dst->r_type) {
default:
printf("BAD %x\n", dst->r_type);
case R_DA:
internal->howto = &r_da;
break;
case R_JR:
internal->howto = &r_jr;
}
}
#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
/* Perform any necessaru magic to the addend in a reloc entry */
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
cache_ptr->addend = ext_reloc.r_offset;
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
reloc_processing(relent, reloc, symbols, abfd, section)
static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) ,
arelent *relent AND
struct internal_reloc *reloc AND
asymbol **symbols AND
bfd *abfd AND
asection *section)
{
relent->address = reloc->r_vaddr;
rtype2howto(relent,reloc);
if (reloc->r_symndx > 0)
{
relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
}
else
{
relent->sym_ptr_ptr = &(bfd_abs_symbol);
}
relent->addend = reloc->r_offset;
relent->address-= section->vma;
/* relent->section = 0;*/
}
static bfd_vma get_value();
static void
extra_case(in_abfd, seclet, reloc, data, src_ptr, dst_ptr)
bfd *in_abfd;
bfd_seclet_type *seclet;
arelent *reloc;
bfd_byte *data;
unsigned int *src_ptr;
unsigned int *dst_ptr;
{
switch (reloc->howto->type)
{
case R_DA:
bfd_put_16(in_abfd, get_value(reloc, seclet), data+*dst_ptr);
(*dst_ptr)+=2;
( *src_ptr)+=2;
break;
case R_JR:
{
bfd_vma dst = get_value(reloc,seclet);
bfd_vma dot = seclet->offset
+ *dst_ptr
+ seclet->u.indirect.section->output_section->vma;
int gap = dst - dot - 1 ; /* -1 since were in the odd byte of the
word */
if (gap & 1)
abort();
gap/=2;
if (gap > 128 || gap< -128)
{
bfd_error_vector.reloc_value_truncated(reloc, seclet);
}
bfd_put_8(in_abfd, gap, data+*dst_ptr);
(*dst_ptr)++;
(*src_ptr)++;
break;
}
default:
abort();
}
}
#define EXTRA_CASES default: extra_case(in_abfd,seclet,reloc, data, &src_address, &dst_address);
#include "coffcode.h"
#undef coff_bfd_get_relocated_section_contents
#undef coff_bfd_relax_section
#define coff_bfd_get_relocated_section_contents bfd_coff_get_relocated_section_contents
#define coff_bfd_relax_section bfd_coff_relax_section
bfd_target z8kcoff_vec =
{
"coff-z8k", /* name */
bfd_target_coff_flavour,
true, /* data byte order is big */
true, /* header byte order is big */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
( SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
'_', /* leading symbol underscore */
'/', /* ar_pad_char */
15, /* ar_max_namelen */
1, /* minimum section alignment */
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
bfd_false},
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
JUMP_TABLE(coff),
COFF_SWAP_TABLE
};