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) < 16 ? (n) : 0])
89 #define RDATA(abfd, n) (abfd->tdata.versados_data->rest[(n) < 240 ? (n) : 0])
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
)
193 bfd_size_type amt
= ptr
->size
+ 1;
195 if (amt
< sizeof (* ptr
))
196 memset ((char *) ptr
+ amt
, 0, sizeof (* ptr
) - amt
);
203 get_4 (unsigned char **pp
)
205 unsigned char *p
= *pp
;
208 return (p
[0] << 24) | (p
[1] << 16) | (p
[2] << 8) | (p
[3] << 0);
212 get_10 (unsigned char **pp
, char *name
)
214 char *p
= (char *) *pp
;
218 while (*p
!= ' ' && len
)
227 new_symbol_string (bfd
*abfd
, const char *name
)
229 char *n
= VDATA (abfd
)->strings
;
231 strcpy (VDATA (abfd
)->strings
, name
);
232 VDATA (abfd
)->strings
+= strlen (VDATA (abfd
)->strings
) + 1;
237 process_esd (bfd
*abfd
, struct ext_esd
*esd
, int pass
)
239 /* Read through the ext def for the est entries. */
240 int togo
= esd
->size
- 2;
245 unsigned char *ptr
= esd
->esd_entries
;
246 unsigned char *end
= ptr
+ togo
;
250 int scn
= *ptr
& 0xf;
251 int typ
= (*ptr
>> 4) & 0xf;
253 /* Declare this section. */
254 sprintf (name
, "%d", scn
);
255 sec
= bfd_make_section_old_way (abfd
, strdup (name
));
256 sec
->target_index
= scn
;
257 EDATA (abfd
, scn
).section
= sec
;
267 int snum
= VDATA (abfd
)->ref_idx
++;
270 VDATA (abfd
)->stringlen
+= strlen (name
) + 1;
275 char *n
= new_symbol_string (abfd
, name
);
277 s
= versados_new_symbol (abfd
, snum
, n
, (bfd_vma
) 0,
278 bfd_und_section_ptr
);
279 esidx
= VDATA (abfd
)->es_done
++;
280 RDATA (abfd
, esidx
- ES_BASE
) = s
;
288 start
= get_4 (&ptr
);
291 case ESD_STD_REL_SEC
:
292 case ESD_SHRT_REL_SEC
:
293 sec
->size
= get_4 (&ptr
);
294 sec
->flags
|= SEC_ALLOC
;
296 case ESD_XDEF_IN_ABS
:
297 sec
= bfd_abs_section_ptr
;
298 case ESD_XDEF_IN_SEC
:
300 int snum
= VDATA (abfd
)->def_idx
++;
306 /* Just remember the symbol. */
307 VDATA (abfd
)->stringlen
+= strlen (name
) + 1;
311 char *n
= new_symbol_string (abfd
, name
);
313 s
= versados_new_symbol (abfd
, snum
+ VDATA (abfd
)->nrefs
, n
,
315 s
->flags
|= BSF_GLOBAL
;
325 #define R_RELWORD_NEG 3
326 #define R_RELLONG_NEG 4
328 reloc_howto_type versados_howto_table
[] =
330 HOWTO (R_RELWORD
, 0, 1, 16, FALSE
,
331 0, complain_overflow_dont
, 0,
332 "+v16", TRUE
, 0x0000ffff, 0x0000ffff, FALSE
),
333 HOWTO (R_RELLONG
, 0, 2, 32, FALSE
,
334 0, complain_overflow_dont
, 0,
335 "+v32", TRUE
, 0xffffffff, 0xffffffff, FALSE
),
337 HOWTO (R_RELWORD_NEG
, 0, -1, 16, FALSE
,
338 0, complain_overflow_dont
, 0,
339 "-v16", TRUE
, 0x0000ffff, 0x0000ffff, FALSE
),
340 HOWTO (R_RELLONG_NEG
, 0, -2, 32, FALSE
,
341 0, complain_overflow_dont
, 0,
342 "-v32", TRUE
, 0xffffffff, 0xffffffff, FALSE
),
346 get_offset (int len
, unsigned char *ptr
)
357 for (i
= 1; i
< len
; i
++)
358 val
= (val
<< 8) | *ptr
++;
365 process_otr (bfd
*abfd
, struct ext_otr
*otr
, int pass
)
368 unsigned char *srcp
= otr
->data
;
369 unsigned char *endp
= (unsigned char *) otr
+ otr
->size
;
370 unsigned int bits
= (otr
->map
[0] << 24)
371 | (otr
->map
[1] << 16)
373 | (otr
->map
[3] << 0);
375 struct esdid
*esdid
= &EDATA (abfd
, otr
->esdid
- 1);
376 unsigned char *contents
= esdid
->contents
;
377 bfd_boolean need_contents
= FALSE
;
378 unsigned int dst_idx
= esdid
->pc
;
380 for (shift
= ((unsigned long) 1 << 31); shift
&& srcp
< endp
; shift
>>= 1)
385 int esdids
= (flag
>> 5) & 0x7;
386 int sizeinwords
= ((flag
>> 3) & 1) ? 2 : 1;
387 int offsetlen
= flag
& 0x7;
392 /* A zero esdid means the new pc is the offset given. */
393 dst_idx
+= get_offset (offsetlen
, srcp
);
398 int val
= get_offset (offsetlen
, srcp
+ esdids
);
401 need_contents
= TRUE
;
403 for (j
= 0; j
< sizeinwords
* 2; j
++)
405 contents
[dst_idx
+ (sizeinwords
* 2) - j
- 1] = val
;
409 for (j
= 0; j
< esdids
; j
++)
415 int rn
= EDATA (abfd
, otr
->esdid
- 1).relocs
++;
419 /* This is the first pass over the data,
420 just remember that we need a reloc. */
425 EDATA (abfd
, otr
->esdid
- 1).section
->relocation
+ rn
;
426 n
->address
= dst_idx
;
428 n
->sym_ptr_ptr
= (asymbol
**) (size_t) id
;
430 n
->howto
= versados_howto_table
+ ((j
& 1) * 2) + (sizeinwords
- 1);
435 dst_idx
+= sizeinwords
* 2;
440 need_contents
= TRUE
;
442 if (esdid
->section
&& contents
&& dst_idx
< esdid
->section
->size
)
445 /* Absolute code, comes in 16 bit lumps. */
446 contents
[dst_idx
] = srcp
[0];
447 contents
[dst_idx
+ 1] = srcp
[1];
455 EDATA (abfd
, otr
->esdid
- 1).pc
= dst_idx
;
457 if (!contents
&& need_contents
)
463 size
= esdid
->section
->size
;
464 esdid
->contents
= bfd_alloc (abfd
, size
);
467 esdid
->contents
= NULL
;
472 versados_scan (bfd
*abfd
)
474 bfd_boolean loop
= TRUE
;
480 VDATA (abfd
)->stringlen
= 0;
481 VDATA (abfd
)->nrefs
= 0;
482 VDATA (abfd
)->ndefs
= 0;
483 VDATA (abfd
)->ref_idx
= 0;
484 VDATA (abfd
)->def_idx
= 0;
485 VDATA (abfd
)->pass_2_done
= 0;
491 if (!get_record (abfd
, &any
))
493 switch (any
.header
.type
)
501 process_esd (abfd
, &any
.esd
, 1);
504 process_otr (abfd
, &any
.otr
, 1);
509 /* Now allocate space for the relocs and sections. */
510 VDATA (abfd
)->nrefs
= VDATA (abfd
)->ref_idx
;
511 VDATA (abfd
)->ndefs
= VDATA (abfd
)->def_idx
;
512 VDATA (abfd
)->ref_idx
= 0;
513 VDATA (abfd
)->def_idx
= 0;
515 abfd
->symcount
= VDATA (abfd
)->nrefs
+ VDATA (abfd
)->ndefs
;
517 for (i
= 0; i
< 16; i
++)
519 struct esdid
*esdid
= &EDATA (abfd
, i
);
523 amt
= (bfd_size_type
) esdid
->relocs
* sizeof (arelent
);
524 esdid
->section
->relocation
= bfd_alloc (abfd
, amt
);
528 esdid
->section
->flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
;
530 esdid
->section
->reloc_count
= esdid
->relocs
;
532 esdid
->section
->flags
|= SEC_RELOC
;
536 /* Add an entry into the symbol table for it. */
538 VDATA (abfd
)->stringlen
+= strlen (esdid
->section
->name
) + 1;
542 abfd
->symcount
+= nsecs
;
544 amt
= abfd
->symcount
;
545 amt
*= sizeof (asymbol
);
546 VDATA (abfd
)->symbols
= bfd_alloc (abfd
, amt
);
548 amt
= VDATA (abfd
)->stringlen
;
549 VDATA (abfd
)->strings
= bfd_alloc (abfd
, amt
);
551 if ((VDATA (abfd
)->symbols
== NULL
&& abfd
->symcount
> 0)
552 || (VDATA (abfd
)->strings
== NULL
&& VDATA (abfd
)->stringlen
> 0))
555 /* Actually fill in the section symbols,
556 we stick them at the end of the table. */
557 for (j
= VDATA (abfd
)->nrefs
+ VDATA (abfd
)->ndefs
, i
= 0; i
< 16; i
++)
559 struct esdid
*esdid
= &EDATA (abfd
, i
);
560 asection
*sec
= esdid
->section
;
564 asymbol
*s
= VDATA (abfd
)->symbols
+ j
;
565 s
->name
= new_symbol_string (abfd
, sec
->name
);
567 s
->flags
= BSF_LOCAL
;
575 abfd
->flags
|= HAS_SYMS
;
577 /* Set this to nsecs - since we've already planted the section
579 VDATA (abfd
)->nsecsyms
= nsecs
;
581 VDATA (abfd
)->ref_idx
= 0;
586 /* Check whether an existing file is a versados file. */
588 static const bfd_target
*
589 versados_object_p (bfd
*abfd
)
591 struct ext_vheader ext
;
593 tdata_type
*tdata_save
;
595 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
598 if (bfd_bread (&len
, (bfd_size_type
) 1, abfd
) != 1)
600 if (bfd_get_error () != bfd_error_system_call
)
601 bfd_set_error (bfd_error_wrong_format
);
605 /* PR 17512: file: 726-2128-0.004. */
608 bfd_set_error (bfd_error_wrong_format
);
612 if (bfd_bread (&ext
.type
, (bfd_size_type
) len
, abfd
) != len
)
614 if (bfd_get_error () != bfd_error_system_call
)
615 bfd_set_error (bfd_error_wrong_format
);
619 /* We guess that the language field will never be larger than 10.
620 In sample files, it is always either 0 or 1. Checking for this
621 prevents confusion with Intel Hex files. */
622 if (ext
.type
!= VHEADER
625 bfd_set_error (bfd_error_wrong_format
);
629 /* OK, looks like a record, build the tdata and read in. */
630 tdata_save
= abfd
->tdata
.versados_data
;
631 if (!versados_mkobject (abfd
) || !versados_scan (abfd
))
633 abfd
->tdata
.versados_data
= tdata_save
;
641 versados_pass_2 (bfd
*abfd
)
645 if (VDATA (abfd
)->pass_2_done
)
648 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
651 VDATA (abfd
)->es_done
= ES_BASE
;
653 /* Read records till we get to where we want to be. */
656 get_record (abfd
, &any
);
657 switch (any
.header
.type
)
660 VDATA (abfd
)->pass_2_done
= 1;
663 process_esd (abfd
, &any
.esd
, 2);
666 process_otr (abfd
, &any
.otr
, 2);
673 versados_get_section_contents (bfd
*abfd
,
679 if (!versados_pass_2 (abfd
))
683 EDATA (abfd
, section
->target_index
).contents
+ offset
,
689 #define versados_get_section_contents_in_window \
690 _bfd_generic_get_section_contents_in_window
693 versados_set_section_contents (bfd
*abfd ATTRIBUTE_UNUSED
,
694 sec_ptr section ATTRIBUTE_UNUSED
,
695 const void * location ATTRIBUTE_UNUSED
,
696 file_ptr offset ATTRIBUTE_UNUSED
,
697 bfd_size_type bytes_to_do ATTRIBUTE_UNUSED
)
703 versados_sizeof_headers (bfd
*abfd ATTRIBUTE_UNUSED
,
704 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
709 /* Return the amount of memory needed to read the symbol table. */
712 versados_get_symtab_upper_bound (bfd
*abfd
)
714 return (bfd_get_symcount (abfd
) + 1) * sizeof (asymbol
*);
717 /* Return the symbol table. */
720 versados_canonicalize_symtab (bfd
*abfd
, asymbol
**alocation
)
722 unsigned int symcount
= bfd_get_symcount (abfd
);
726 versados_pass_2 (abfd
);
728 for (i
= 0, s
= VDATA (abfd
)->symbols
;
739 versados_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
743 bfd_symbol_info (symbol
, ret
);
747 versados_print_symbol (bfd
*abfd
,
750 bfd_print_symbol_type how
)
752 FILE *file
= (FILE *) afile
;
756 case bfd_print_symbol_name
:
757 fprintf (file
, "%s", symbol
->name
);
760 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
761 fprintf (file
, " %-5s %s",
762 symbol
->section
->name
,
768 versados_get_reloc_upper_bound (bfd
*abfd ATTRIBUTE_UNUSED
,
771 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
775 versados_canonicalize_reloc (bfd
*abfd
,
783 versados_pass_2 (abfd
);
784 src
= section
->relocation
;
786 if (!EDATA (abfd
, section
->target_index
).donerel
)
788 EDATA (abfd
, section
->target_index
).donerel
= 1;
789 /* Translate from indexes to symptr ptrs. */
790 for (count
= 0; count
< section
->reloc_count
; count
++)
792 int esdid
= (int) (size_t) src
[count
].sym_ptr_ptr
;
795 src
[count
].sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
796 else if (esdid
< ES_BASE
)
798 /* Section relative thing. */
799 struct esdid
*e
= &EDATA (abfd
, esdid
- 1);
801 src
[count
].sym_ptr_ptr
= e
->section
->symbol_ptr_ptr
;
803 /* PR 17512: file:3757-2936-0.004. */
804 else if ((unsigned) (esdid
- ES_BASE
) >= bfd_get_symcount (abfd
))
805 src
[count
].sym_ptr_ptr
= bfd_und_section_ptr
->symbol_ptr_ptr
;
807 src
[count
].sym_ptr_ptr
= symbols
+ esdid
- ES_BASE
;
811 for (count
= 0; count
< section
->reloc_count
; count
++)
815 return section
->reloc_count
;
818 #define versados_close_and_cleanup _bfd_generic_close_and_cleanup
819 #define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
820 #define versados_new_section_hook _bfd_generic_new_section_hook
821 #define versados_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
822 #define versados_bfd_is_local_label_name bfd_generic_is_local_label_name
823 #define versados_get_lineno _bfd_nosymbols_get_lineno
824 #define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
825 #define versados_find_line _bfd_nosymbols_find_line
826 #define versados_find_inliner_info _bfd_nosymbols_find_inliner_info
827 #define versados_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
828 #define versados_make_empty_symbol _bfd_generic_make_empty_symbol
829 #define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
830 #define versados_read_minisymbols _bfd_generic_read_minisymbols
831 #define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
832 #define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
833 #define versados_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
834 #define versados_set_arch_mach bfd_default_set_arch_mach
835 #define versados_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
836 #define versados_bfd_relax_section bfd_generic_relax_section
837 #define versados_bfd_gc_sections bfd_generic_gc_sections
838 #define versados_bfd_lookup_section_flags bfd_generic_lookup_section_flags
839 #define versados_bfd_merge_sections bfd_generic_merge_sections
840 #define versados_bfd_is_group_section bfd_generic_is_group_section
841 #define versados_bfd_discard_group bfd_generic_discard_group
842 #define versados_section_already_linked _bfd_generic_section_already_linked
843 #define versados_bfd_define_common_symbol bfd_generic_define_common_symbol
844 #define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
845 #define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
846 #define versados_bfd_link_just_syms _bfd_generic_link_just_syms
847 #define versados_bfd_copy_link_hash_symbol_type \
848 _bfd_generic_copy_link_hash_symbol_type
849 #define versados_bfd_final_link _bfd_generic_final_link
850 #define versados_bfd_link_split_section _bfd_generic_link_split_section
852 const bfd_target m68k_versados_vec
=
854 "versados", /* Name. */
855 bfd_target_versados_flavour
,
856 BFD_ENDIAN_BIG
, /* Target byte order. */
857 BFD_ENDIAN_BIG
, /* Target headers byte order. */
858 (HAS_RELOC
| EXEC_P
| /* Object flags. */
859 HAS_LINENO
| HAS_DEBUG
|
860 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
| D_PAGED
),
861 (SEC_CODE
| SEC_DATA
| SEC_ROM
| SEC_HAS_CONTENTS
862 | SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* Section flags. */
863 0, /* Leading underscore. */
864 ' ', /* AR_pad_char. */
865 16, /* AR_max_namelen. */
866 0, /* match priority. */
867 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
868 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
869 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* Data. */
870 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
871 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
872 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* Headers. */
876 versados_object_p
, /* bfd_check_format. */
883 _bfd_generic_mkarchive
,
886 { /* bfd_write_contents. */
889 _bfd_write_archive_contents
,
893 BFD_JUMP_TABLE_GENERIC (versados
),
894 BFD_JUMP_TABLE_COPY (_bfd_generic
),
895 BFD_JUMP_TABLE_CORE (_bfd_nocore
),
896 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive
),
897 BFD_JUMP_TABLE_SYMBOLS (versados
),
898 BFD_JUMP_TABLE_RELOCS (versados
),
899 BFD_JUMP_TABLE_WRITE (versados
),
900 BFD_JUMP_TABLE_LINK (versados
),
901 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),