/* BFD back-end for Motorola M68K COFF LynxOS files.
- Copyright 1993 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define TARGET_SYM m68klynx_coff_vec
#define TARGET_NAME "coff-m68k-lynx"
-
#define LYNXOS
-
#define COFF_LONG_FILENAMES
-
-#define _bfd_m68kcoff_howto_table _bfd_m68klynx_howto_table
-#define _bfd_m68kcoff_rtype2howto _bfd_m68klynx_rtype2howto
-#define _bfd_m68kcoff_howto2rtype _bfd_m68klynx_howto2rtype
-
-#define LYNX_SPECIAL_FN _bfd_m68klynx_special_fn
-
-#include "bfd.h"
-#include "sysdep.h"
-
-static bfd_reloc_status_type _bfd_m68klynx_special_fn PARAMS ((bfd *abfd,
- arelent *reloc_entry,
- asymbol *symbol,
- PTR data,
- asection *input_section,
- bfd *output_bfd,
- char **error_message));
-
-/* For some reason when using m68k COFF the value stored in the .text
- section for a reference to a common symbol is the value itself plus
- any desired offset. (taken from work done by Ian Taylor, Cygnus Support,
- for I386 COFF). */
-
-/* If we are producing relocateable output, we need to do some
- adjustments to the object file that are not done by the
- bfd_perform_relocation function. This function is called by every
- reloc type to make any required adjustments. */
-
-static bfd_reloc_status_type
-_bfd_m68klynx_special_fn (abfd, reloc_entry, symbol, data, input_section, output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
-{
- symvalue diff;
-
- if (output_bfd == (bfd *) NULL)
- return bfd_reloc_continue;
-
- if (bfd_is_com_section (symbol->section))
- {
- /* We are relocating a common symbol. The current value in the
- object file is ORIG + OFFSET, where ORIG is the value of the
- common symbol as seen by the object file when it was compiled
- (this may be zero if the symbol was undefined) and OFFSET is
- the offset into the common symbol (normally zero, but may be
- non-zero when referring to a field in a common structure).
- ORIG is the negative of reloc_entry->addend, which is set by
- the CALC_ADDEND macro below. We want to replace the value in
- the object file with NEW + OFFSET, where NEW is the value of
- the common symbol which we are going to put in the final
- object file. NEW is symbol->value. */
- diff = symbol->value + reloc_entry->addend;
- }
- else
- {
- /* For some reason bfd_perform_relocation always effectively
- ignores the addend for a COFF target when producing
- relocateable output. This seems to be always wrong for 386
- COFF, so we handle the addend here instead. */
- diff = reloc_entry->addend;
- }
-
-#define DOIT(x) \
- x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
-
- if (diff != 0)
- {
- const reloc_howto_type *howto = reloc_entry->howto;
- unsigned char *addr = (unsigned char *) data + reloc_entry->address;
-
- switch (howto->size)
- {
- case 0:
- {
- char x = bfd_get_8 (abfd, addr);
- DOIT (x);
- bfd_put_8 (abfd, x, addr);
- }
- break;
-
- case 1:
- {
- short x = bfd_get_16 (abfd, addr);
- DOIT (x);
- bfd_put_16 (abfd, x, addr);
- }
- break;
-
- case 2:
- {
- long x = bfd_get_32 (abfd, addr);
- DOIT (x);
- bfd_put_32 (abfd, x, addr);
- }
- break;
-
- default:
- abort ();
- }
- }
-
- /* Now let bfd_perform_relocation finish everything up. */
- return bfd_reloc_continue;
-}
-/* Compute the addend of a reloc. If the reloc is to a common symbol,
- the object file contains the value of the common symbol. By the
- time this is called, the linker may be using a different symbol
- from a different object file with a different value. Therefore, we
- hack wildly to locate the original symbol from this file so that we
- can make the correct adjustment. This macro sets coffsym to the
- symbol from the original file, and uses it to set the addend value
- correctly. If this is not a common symbol, the usual addend
- calculation is done, except that an additional tweak is needed for
- PC relative relocs.
- FIXME: This macro refers to symbols and asect; these are from the
- calling function, not the macro arguments. */
-
-#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
- { \
- coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
- if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
- coffsym = (obj_symbols (abfd) \
- + (cache_ptr->sym_ptr_ptr - symbols)); \
- else if (ptr) \
- coffsym = coff_symbol_from (abfd, ptr); \
- if (coffsym != (coff_symbol_type *) NULL \
- && coffsym->native->u.syment.n_scnum == 0) \
- cache_ptr->addend = - coffsym->native->u.syment.n_value; \
- else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
- && ptr->section != (asection *) NULL) \
- cache_ptr->addend = - (ptr->section->vma + ptr->value); \
- else \
- cache_ptr->addend = 0; \
- if (ptr && _bfd_m68klynx_howto_table[reloc.r_type].pc_relative) \
- cache_ptr->addend += asect->vma; \
- }
-
+#define STATIC_RELOCS
+#define COFF_COMMON_ADDEND
#include "coff-m68k.c"
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