1 /* BFD back-end for VERSAdos-E objects.
2 Copyright (C) 1995-2014 Free Software Foundation, Inc.
3 Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
5 Versados is a Motorola trademark.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
26 VERSAdos-E relocatable object file format
30 This module supports reading of VERSAdos relocatable
33 A VERSAdos file looks like contains
35 o Identification Record
36 o External Symbol Definition Record
43 #include "libiberty.h"
51 #define ES_BASE 17 /* First symbol has esdid 17. */
53 /* Per file target dependent information. */
55 /* One for each section. */
58 asection
*section
; /* Ptr to bfd version. */
59 unsigned char *contents
; /* Used to build image. */
61 int relocs
; /* Reloc count, valid end of pass 1. */
62 int donerel
; /* Have relocs been translated. */
65 typedef struct versados_data_struct
67 int es_done
; /* Count of symbol index, starts at ES_BASE. */
68 asymbol
*symbols
; /* Pointer to local symbols. */
69 char *strings
; /* Strings of all the above. */
70 int stringlen
; /* Len of string table (valid end of pass1). */
71 int nsecsyms
; /* Number of sections. */
73 int ndefs
; /* Number of exported symbols (they dont get esdids). */
74 int nrefs
; /* Number of imported symbols (valid end of pass1). */
76 int ref_idx
; /* Current processed value of the above. */
81 struct esdid e
[16]; /* Per section info. */
82 int alert
; /* To see if we're trampling. */
83 asymbol
*rest
[256 - 16]; /* Per symbol info. */
87 #define VDATA(abfd) (abfd->tdata.versados_data)
88 #define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
89 #define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
97 unsigned char data
[200];
103 char type
; /* Record type. */
104 char name
[10]; /* Module name. */
105 char rev
; /* Module rev number. */
121 unsigned char esd_entries
[1];
126 #define ESD_STD_REL_SEC 2
127 #define ESD_SHRT_REL_SEC 3
128 #define ESD_XDEF_IN_SEC 4
129 #define ESD_XDEF_IN_ABS 5
130 #define ESD_XREF_SEC 6
131 #define ESD_XREF_SYM 7
136 struct ext_vheader header
;
141 /* Initialize by filling in the hex conversion array. */
143 /* Set up the tdata information. */
146 versados_mkobject (bfd
*abfd
)
148 if (abfd
->tdata
.versados_data
== NULL
)
150 bfd_size_type amt
= sizeof (tdata_type
);
151 tdata_type
*tdata
= bfd_alloc (abfd
, amt
);
155 abfd
->tdata
.versados_data
= tdata
;
156 tdata
->symbols
= NULL
;
157 VDATA (abfd
)->alert
= 0x12345678;
160 bfd_default_set_arch_mach (abfd
, bfd_arch_m68k
, 0);
164 /* Report a problem in an S record file. FIXME: This probably should
165 not call fprintf, but we really do need some mechanism for printing
169 versados_new_symbol (bfd
*abfd
,
175 asymbol
*n
= VDATA (abfd
)->symbols
+ snum
;
185 get_record (bfd
*abfd
, union ext_any
*ptr
)
187 if (bfd_bread (&ptr
->size
, (bfd_size_type
) 1, abfd
) != 1
188 || (bfd_bread ((char *) ptr
+ 1, (bfd_size_type
) ptr
->size
, abfd
)
195 get_4 (unsigned char **pp
)
197 unsigned char *p
= *pp
;
200 return (p
[0] << 24) | (p
[1] << 16) | (p
[2] << 8) | (p
[3] << 0);
204 get_10 (unsigned char **pp
, char *name
)
206 char *p
= (char *) *pp
;
210 while (*p
!= ' ' && len
)
219 new_symbol_string (bfd
*abfd
, const char *name
)
221 char *n
= VDATA (abfd
)->strings
;
223 strcpy (VDATA (abfd
)->strings
, name
);
224 VDATA (abfd
)->strings
+= strlen (VDATA (abfd
)->strings
) + 1;
229 process_esd (bfd
*abfd
, struct ext_esd
*esd
, int pass
)
231 /* Read through the ext def for the est entries. */
232 int togo
= esd
->size
- 2;
237 unsigned char *ptr
= esd
->esd_entries
;
238 unsigned char *end
= ptr
+ togo
;
242 int scn
= *ptr
& 0xf;
243 int typ
= (*ptr
>> 4) & 0xf;
245 /* Declare this section. */
246 sprintf (name
, "%d", scn
);
247 sec
= bfd_make_section_old_way (abfd
, strdup (name
));
248 sec
->target_index
= scn
;
249 EDATA (abfd
, scn
).section
= sec
;
259 int snum
= VDATA (abfd
)->ref_idx
++;
262 VDATA (abfd
)->stringlen
+= strlen (name
) + 1;
267 char *n
= new_symbol_string (abfd
, name
);
269 s
= versados_new_symbol (abfd
, snum
, n
, (bfd_vma
) 0,
270 bfd_und_section_ptr
);
271 esidx
= VDATA (abfd
)->es_done
++;
272 RDATA (abfd
, esidx
- ES_BASE
) = s
;
280 start
= get_4 (&ptr
);
283 case ESD_STD_REL_SEC
:
284 case ESD_SHRT_REL_SEC
:
285 sec
->size
= get_4 (&ptr
);
286 sec
->flags
|= SEC_ALLOC
;
288 case ESD_XDEF_IN_ABS
:
289 sec
= bfd_abs_section_ptr
;
290 case ESD_XDEF_IN_SEC
:
292 int snum
= VDATA (abfd
)->def_idx
++;
298 /* Just remember the symbol. */
299 VDATA (abfd
)->stringlen
+= strlen (name
) + 1;
303 char *n
= new_symbol_string (abfd
, name
);
305 s
= versados_new_symbol (abfd
, snum
+ VDATA (abfd
)->nrefs
, n
,
307 s
->flags
|= BSF_GLOBAL
;
317 #define R_RELWORD_NEG 3
318 #define R_RELLONG_NEG 4
320 reloc_howto_type versados_howto_table
[] =
322 HOWTO (R_RELWORD
, 0, 1, 16, FALSE
,
323 0, complain_overflow_dont
, 0,
324 "+v16", TRUE
, 0x0000ffff, 0x0000ffff, FALSE
),
325 HOWTO (R_RELLONG
, 0, 2, 32, FALSE
,
326 0, complain_overflow_dont
, 0,
327 "+v32", TRUE
, 0xffffffff, 0xffffffff, FALSE
),
329 HOWTO (R_RELWORD_NEG
, 0, -1, 16, FALSE
,
330 0, complain_overflow_dont
, 0,
331 "-v16", TRUE
, 0x0000ffff, 0x0000ffff, FALSE
),
332 HOWTO (R_RELLONG_NEG
, 0, -2, 32, FALSE
,
333 0, complain_overflow_dont
, 0,
334 "-v32", TRUE
, 0xffffffff, 0xffffffff, FALSE
),
338 get_offset (int len
, unsigned char *ptr
)
349 for (i
= 1; i
< len
; i
++)
350 val
= (val
<< 8) | *ptr
++;
357 process_otr (bfd
*abfd
, struct ext_otr
*otr
, int pass
)
360 unsigned char *srcp
= otr
->data
;
361 unsigned char *endp
= (unsigned char *) otr
+ otr
->size
;
362 unsigned int bits
= (otr
->map
[0] << 24)
363 | (otr
->map
[1] << 16)
365 | (otr
->map
[3] << 0);
367 struct esdid
*esdid
= &EDATA (abfd
, otr
->esdid
- 1);
368 unsigned char *contents
= esdid
->contents
;
369 int need_contents
= 0;
370 unsigned int dst_idx
= esdid
->pc
;
372 for (shift
= ((unsigned long) 1 << 31); shift
&& srcp
< endp
; shift
>>= 1)
377 int esdids
= (flag
>> 5) & 0x7;
378 int sizeinwords
= ((flag
>> 3) & 1) ? 2 : 1;
379 int offsetlen
= flag
& 0x7;
384 /* A zero esdid means the new pc is the offset given. */
385 dst_idx
+= get_offset (offsetlen
, srcp
);
390 int val
= get_offset (offsetlen
, srcp
+ esdids
);
395 for (j
= 0; j
< sizeinwords
* 2; j
++)
397 contents
[dst_idx
+ (sizeinwords
* 2) - j
- 1] = val
;
401 for (j
= 0; j
< esdids
; j
++)
407 int rn
= EDATA (abfd
, otr
->esdid
- 1).relocs
++;
411 /* This is the first pass over the data,
412 just remember that we need a reloc. */
417 EDATA (abfd
, otr
->esdid
- 1).section
->relocation
+ rn
;
418 n
->address
= dst_idx
;
420 n
->sym_ptr_ptr
= (asymbol
**) (size_t) id
;
422 n
->howto
= versados_howto_table
+ ((j
& 1) * 2) + (sizeinwords
- 1);
427 dst_idx
+= sizeinwords
* 2;
434 if (esdid
->section
&& dst_idx
< esdid
->section
->size
)
437 /* Absolute code, comes in 16 bit lumps. */
438 contents
[dst_idx
] = srcp
[0];
439 contents
[dst_idx
+ 1] = srcp
[1];
445 EDATA (abfd
, otr
->esdid
- 1).pc
= dst_idx
;
447 if (!contents
&& need_contents
)
453 size
= esdid
->section
->size
;
454 esdid
->contents
= bfd_alloc (abfd
, size
);
457 esdid
->contents
= NULL
;
462 versados_scan (bfd
*abfd
)
470 VDATA (abfd
)->stringlen
= 0;
471 VDATA (abfd
)->nrefs
= 0;
472 VDATA (abfd
)->ndefs
= 0;
473 VDATA (abfd
)->ref_idx
= 0;
474 VDATA (abfd
)->def_idx
= 0;
475 VDATA (abfd
)->pass_2_done
= 0;
481 if (!get_record (abfd
, &any
))
483 switch (any
.header
.type
)
491 process_esd (abfd
, &any
.esd
, 1);
494 process_otr (abfd
, &any
.otr
, 1);
499 /* Now allocate space for the relocs and sections. */
500 VDATA (abfd
)->nrefs
= VDATA (abfd
)->ref_idx
;
501 VDATA (abfd
)->ndefs
= VDATA (abfd
)->def_idx
;
502 VDATA (abfd
)->ref_idx
= 0;
503 VDATA (abfd
)->def_idx
= 0;
505 abfd
->symcount
= VDATA (abfd
)->nrefs
+ VDATA (abfd
)->ndefs
;
507 for (i
= 0; i
< 16; i
++)
509 struct esdid
*esdid
= &EDATA (abfd
, i
);
513 amt
= (bfd_size_type
) esdid
->relocs
* sizeof (arelent
);
514 esdid
->section
->relocation
= bfd_alloc (abfd
, amt
);
519 esdid
->section
->flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
;
521 esdid
->section
->reloc_count
= esdid
->relocs
;
523 esdid
->section
->flags
|= SEC_RELOC
;
527 /* Add an entry into the symbol table for it. */
529 VDATA (abfd
)->stringlen
+= strlen (esdid
->section
->name
) + 1;
533 abfd
->symcount
+= nsecs
;
535 amt
= abfd
->symcount
;
536 amt
*= sizeof (asymbol
);
537 VDATA (abfd
)->symbols
= bfd_alloc (abfd
, amt
);
539 amt
= VDATA (abfd
)->stringlen
;
540 VDATA (abfd
)->strings
= bfd_alloc (abfd
, amt
);
542 if ((VDATA (abfd
)->symbols
== NULL
&& abfd
->symcount
> 0)
543 || (VDATA (abfd
)->strings
== NULL
&& VDATA (abfd
)->stringlen
> 0))
546 /* Actually fill in the section symbols,
547 we stick them at the end of the table. */
548 for (j
= VDATA (abfd
)->nrefs
+ VDATA (abfd
)->ndefs
, i
= 0; i
< 16; i
++)
550 struct esdid
*esdid
= &EDATA (abfd
, i
);
551 asection
*sec
= esdid
->section
;
555 asymbol
*s
= VDATA (abfd
)->symbols
+ j
;
556 s
->name
= new_symbol_string (abfd
, sec
->name
);
558 s
->flags
= BSF_LOCAL
;
566 abfd
->flags
|= HAS_SYMS
;
568 /* Set this to nsecs - since we've already planted the section
570 VDATA (abfd
)->nsecsyms
= nsecs
;
572 VDATA (abfd
)->ref_idx
= 0;
577 /* Check whether an existing file is a versados file. */
579 static const bfd_target
*
580 versados_object_p (bfd
*abfd
)
582 struct ext_vheader ext
;
584 tdata_type
*tdata_save
;
586 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
589 if (bfd_bread (&len
, (bfd_size_type
) 1, abfd
) != 1)
591 if (bfd_get_error () != bfd_error_system_call
)
592 bfd_set_error (bfd_error_wrong_format
);
596 /* PR 17512: file: 726-2128-0.004. */
599 bfd_set_error (bfd_error_wrong_format
);
603 if (bfd_bread (&ext
.type
, (bfd_size_type
) len
, abfd
) != len
)
605 if (bfd_get_error () != bfd_error_system_call
)
606 bfd_set_error (bfd_error_wrong_format
);
610 /* We guess that the language field will never be larger than 10.
611 In sample files, it is always either 0 or 1. Checking for this
612 prevents confusion with Intel Hex files. */
613 if (ext
.type
!= VHEADER
616 bfd_set_error (bfd_error_wrong_format
);
620 /* OK, looks like a record, build the tdata and read in. */
621 tdata_save
= abfd
->tdata
.versados_data
;
622 if (!versados_mkobject (abfd
) || !versados_scan (abfd
))
624 abfd
->tdata
.versados_data
= tdata_save
;
632 versados_pass_2 (bfd
*abfd
)
636 if (VDATA (abfd
)->pass_2_done
)
639 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
642 VDATA (abfd
)->es_done
= ES_BASE
;
644 /* Read records till we get to where we want to be. */
647 get_record (abfd
, &any
);
648 switch (any
.header
.type
)
651 VDATA (abfd
)->pass_2_done
= 1;
654 process_esd (abfd
, &any
.esd
, 2);
657 process_otr (abfd
, &any
.otr
, 2);
664 versados_get_section_contents (bfd
*abfd
,
670 if (!versados_pass_2 (abfd
))
674 EDATA (abfd
, section
->target_index
).contents
+ offset
,
680 #define versados_get_section_contents_in_window \
681 _bfd_generic_get_section_contents_in_window
684 versados_set_section_contents (bfd
*abfd ATTRIBUTE_UNUSED
,
685 sec_ptr section ATTRIBUTE_UNUSED
,
686 const void * location ATTRIBUTE_UNUSED
,
687 file_ptr offset ATTRIBUTE_UNUSED
,
688 bfd_size_type bytes_to_do ATTRIBUTE_UNUSED
)
694 versados_sizeof_headers (bfd
*abfd ATTRIBUTE_UNUSED
,
695 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
700 /* Return the amount of memory needed to read the symbol table. */
703 versados_get_symtab_upper_bound (bfd
*abfd
)
705 return (bfd_get_symcount (abfd
) + 1) * sizeof (asymbol
*);
708 /* Return the symbol table. */
711 versados_canonicalize_symtab (bfd
*abfd
, asymbol
**alocation
)
713 unsigned int symcount
= bfd_get_symcount (abfd
);
717 versados_pass_2 (abfd
);
719 for (i
= 0, s
= VDATA (abfd
)->symbols
;
730 versados_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
734 bfd_symbol_info (symbol
, ret
);
738 versados_print_symbol (bfd
*abfd
,
741 bfd_print_symbol_type how
)
743 FILE *file
= (FILE *) afile
;
747 case bfd_print_symbol_name
:
748 fprintf (file
, "%s", symbol
->name
);
751 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
752 fprintf (file
, " %-5s %s",
753 symbol
->section
->name
,
759 versados_get_reloc_upper_bound (bfd
*abfd ATTRIBUTE_UNUSED
,
762 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
766 versados_canonicalize_reloc (bfd
*abfd
,
774 versados_pass_2 (abfd
);
775 src
= section
->relocation
;
776 if (!EDATA (abfd
, section
->target_index
).donerel
)
778 EDATA (abfd
, section
->target_index
).donerel
= 1;
779 /* Translate from indexes to symptr ptrs. */
780 for (count
= 0; count
< section
->reloc_count
; count
++)
782 int esdid
= (int) (size_t) src
[count
].sym_ptr_ptr
;
785 src
[count
].sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
786 else if (esdid
< ES_BASE
)
788 /* Section relative thing. */
789 struct esdid
*e
= &EDATA (abfd
, esdid
- 1);
791 src
[count
].sym_ptr_ptr
= e
->section
->symbol_ptr_ptr
;
794 src
[count
].sym_ptr_ptr
= symbols
+ esdid
- ES_BASE
;
798 for (count
= 0; count
< section
->reloc_count
; count
++)
802 return section
->reloc_count
;
805 #define versados_close_and_cleanup _bfd_generic_close_and_cleanup
806 #define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
807 #define versados_new_section_hook _bfd_generic_new_section_hook
808 #define versados_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
809 #define versados_bfd_is_local_label_name bfd_generic_is_local_label_name
810 #define versados_get_lineno _bfd_nosymbols_get_lineno
811 #define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
812 #define versados_find_line _bfd_nosymbols_find_line
813 #define versados_find_inliner_info _bfd_nosymbols_find_inliner_info
814 #define versados_make_empty_symbol _bfd_generic_make_empty_symbol
815 #define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
816 #define versados_read_minisymbols _bfd_generic_read_minisymbols
817 #define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
818 #define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
819 #define versados_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
820 #define versados_set_arch_mach bfd_default_set_arch_mach
821 #define versados_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
822 #define versados_bfd_relax_section bfd_generic_relax_section
823 #define versados_bfd_gc_sections bfd_generic_gc_sections
824 #define versados_bfd_lookup_section_flags bfd_generic_lookup_section_flags
825 #define versados_bfd_merge_sections bfd_generic_merge_sections
826 #define versados_bfd_is_group_section bfd_generic_is_group_section
827 #define versados_bfd_discard_group bfd_generic_discard_group
828 #define versados_section_already_linked _bfd_generic_section_already_linked
829 #define versados_bfd_define_common_symbol bfd_generic_define_common_symbol
830 #define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
831 #define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
832 #define versados_bfd_link_just_syms _bfd_generic_link_just_syms
833 #define versados_bfd_copy_link_hash_symbol_type \
834 _bfd_generic_copy_link_hash_symbol_type
835 #define versados_bfd_final_link _bfd_generic_final_link
836 #define versados_bfd_link_split_section _bfd_generic_link_split_section
838 const bfd_target m68k_versados_vec
=
840 "versados", /* Name. */
841 bfd_target_versados_flavour
,
842 BFD_ENDIAN_BIG
, /* Target byte order. */
843 BFD_ENDIAN_BIG
, /* Target headers byte order. */
844 (HAS_RELOC
| EXEC_P
| /* Object flags. */
845 HAS_LINENO
| HAS_DEBUG
|
846 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
| D_PAGED
),
847 (SEC_CODE
| SEC_DATA
| SEC_ROM
| SEC_HAS_CONTENTS
848 | SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* Section flags. */
849 0, /* Leading underscore. */
850 ' ', /* AR_pad_char. */
851 16, /* AR_max_namelen. */
852 0, /* match priority. */
853 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
854 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
855 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* Data. */
856 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
857 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
858 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* Headers. */
862 versados_object_p
, /* bfd_check_format. */
869 _bfd_generic_mkarchive
,
872 { /* bfd_write_contents. */
875 _bfd_write_archive_contents
,
879 BFD_JUMP_TABLE_GENERIC (versados
),
880 BFD_JUMP_TABLE_COPY (_bfd_generic
),
881 BFD_JUMP_TABLE_CORE (_bfd_nocore
),
882 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive
),
883 BFD_JUMP_TABLE_SYMBOLS (versados
),
884 BFD_JUMP_TABLE_RELOCS (versados
),
885 BFD_JUMP_TABLE_WRITE (versados
),
886 BFD_JUMP_TABLE_LINK (versados
),
887 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),