1 /* BFD back-end for VERSAdos-E objects.
2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2009 Free Software Foundation, Inc.
4 Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
6 Versados is a Motorola trademark.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
27 VERSAdos-E relocatable object file format
31 This module supports reading of VERSAdos relocatable
34 A VERSAdos file looks like contains
36 o Identification Record
37 o External Symbol Definition Record
44 #include "libiberty.h"
52 #define ES_BASE 17 /* First symbol has esdid 17. */
54 /* Per file target dependent information. */
56 /* One for each section. */
59 asection *section; /* Ptr to bfd version. */
60 unsigned char *contents; /* Used to build image. */
62 int relocs; /* Reloc count, valid end of pass 1. */
63 int donerel; /* Have relocs been translated. */
66 typedef struct versados_data_struct
68 int es_done; /* Count of symbol index, starts at ES_BASE. */
69 asymbol *symbols; /* Pointer to local symbols. */
70 char *strings; /* Strings of all the above. */
71 int stringlen; /* Len of string table (valid end of pass1). */
72 int nsecsyms; /* Number of sections. */
74 int ndefs; /* Number of exported symbols (they dont get esdids). */
75 int nrefs; /* Number of imported symbols (valid end of pass1). */
77 int ref_idx; /* Current processed value of the above. */
82 struct esdid e[16]; /* Per section info. */
83 int alert; /* To see if we're trampling. */
84 asymbol *rest[256 - 16]; /* Per symbol info. */
88 #define VDATA(abfd) (abfd->tdata.versados_data)
89 #define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
90 #define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
98 unsigned char data[200];
104 char type; /* Record type. */
105 char name[10]; /* Module name. */
106 char rev; /* Module rev number. */
122 unsigned char esd_entries[1];
127 #define ESD_STD_REL_SEC 2
128 #define ESD_SHRT_REL_SEC 3
129 #define ESD_XDEF_IN_SEC 4
130 #define ESD_XDEF_IN_ABS 5
131 #define ESD_XREF_SEC 6
132 #define ESD_XREF_SYM 7
137 struct ext_vheader header;
142 /* Initialize by filling in the hex conversion array. */
144 /* Set up the tdata information. */
147 versados_mkobject (bfd *abfd)
149 if (abfd->tdata.versados_data == NULL)
151 bfd_size_type amt = sizeof (tdata_type);
152 tdata_type *tdata = bfd_alloc (abfd, amt);
156 abfd->tdata.versados_data = tdata;
157 tdata->symbols = NULL;
158 VDATA (abfd)->alert = 0x12345678;
161 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
165 /* Report a problem in an S record file. FIXME: This probably should
166 not call fprintf, but we really do need some mechanism for printing
170 versados_new_symbol (bfd *abfd,
176 asymbol *n = VDATA (abfd)->symbols + snum;
186 get_record (bfd *abfd, union ext_any *ptr)
188 if (bfd_bread (&ptr->size, (bfd_size_type) 1, abfd) != 1
189 || (bfd_bread ((char *) ptr + 1, (bfd_size_type) ptr->size, abfd)
196 get_4 (unsigned char **pp)
198 unsigned char *p = *pp;
201 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
205 get_10 (unsigned char **pp, char *name)
207 char *p = (char *) *pp;
211 while (*p != ' ' && len)
220 new_symbol_string (bfd *abfd, const char *name)
222 char *n = VDATA (abfd)->strings;
224 strcpy (VDATA (abfd)->strings, name);
225 VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
230 process_esd (bfd *abfd, struct ext_esd *esd, int pass)
232 /* Read through the ext def for the est entries. */
233 int togo = esd->size - 2;
238 unsigned char *ptr = esd->esd_entries;
239 unsigned char *end = ptr + togo;
243 int scn = *ptr & 0xf;
244 int typ = (*ptr >> 4) & 0xf;
246 /* Declare this section. */
247 sprintf (name, "%d", scn);
248 sec = bfd_make_section_old_way (abfd, strdup (name));
249 sec->target_index = scn;
250 EDATA (abfd, scn).section = sec;
260 int snum = VDATA (abfd)->ref_idx++;
263 VDATA (abfd)->stringlen += strlen (name) + 1;
268 char *n = new_symbol_string (abfd, name);
270 s = versados_new_symbol (abfd, snum, n, (bfd_vma) 0,
271 bfd_und_section_ptr);
272 esidx = VDATA (abfd)->es_done++;
273 RDATA (abfd, esidx - ES_BASE) = s;
280 start = get_4 (&ptr);
282 case ESD_STD_REL_SEC:
283 case ESD_SHRT_REL_SEC:
284 sec->size = get_4 (&ptr);
285 sec->flags |= SEC_ALLOC;
287 case ESD_XDEF_IN_ABS:
288 sec = (asection *) & bfd_abs_section;
289 case ESD_XDEF_IN_SEC:
291 int snum = VDATA (abfd)->def_idx++;
297 /* Just remember the symbol. */
298 VDATA (abfd)->stringlen += strlen (name) + 1;
302 char *n = new_symbol_string (abfd, name);
304 s = versados_new_symbol (abfd, snum + VDATA (abfd)->nrefs, n,
306 s->flags |= BSF_GLOBAL;
316 #define R_RELWORD_NEG 3
317 #define R_RELLONG_NEG 4
319 reloc_howto_type versados_howto_table[] =
321 HOWTO (R_RELWORD, 0, 1, 16, FALSE,
322 0, complain_overflow_dont, 0,
323 "+v16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
324 HOWTO (R_RELLONG, 0, 2, 32, FALSE,
325 0, complain_overflow_dont, 0,
326 "+v32", TRUE, 0xffffffff, 0xffffffff, FALSE),
328 HOWTO (R_RELWORD_NEG, 0, -1, 16, FALSE,
329 0, complain_overflow_dont, 0,
330 "-v16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
331 HOWTO (R_RELLONG_NEG, 0, -2, 32, FALSE,
332 0, complain_overflow_dont, 0,
333 "-v32", TRUE, 0xffffffff, 0xffffffff, FALSE),
337 get_offset (int len, unsigned char *ptr)
348 for (i = 1; i < len; i++)
349 val = (val << 8) | *ptr++;
356 process_otr (bfd *abfd, struct ext_otr *otr, int pass)
359 unsigned char *srcp = otr->data;
360 unsigned char *endp = (unsigned char *) otr + otr->size;
361 unsigned int bits = (otr->map[0] << 24)
362 | (otr->map[1] << 16)
364 | (otr->map[3] << 0);
366 struct esdid *esdid = &EDATA (abfd, otr->esdid - 1);
367 unsigned char *contents = esdid->contents;
368 int need_contents = 0;
369 unsigned int dst_idx = esdid->pc;
371 for (shift = ((unsigned long) 1 << 31); shift && srcp < endp; shift >>= 1)
376 int esdids = (flag >> 5) & 0x7;
377 int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
378 int offsetlen = flag & 0x7;
383 /* A zero esdid means the new pc is the offset given. */
384 dst_idx += get_offset (offsetlen, srcp);
389 int val = get_offset (offsetlen, srcp + esdids);
394 for (j = 0; j < sizeinwords * 2; j++)
396 contents[dst_idx + (sizeinwords * 2) - j - 1] = val;
400 for (j = 0; j < esdids; j++)
406 int rn = EDATA (abfd, otr->esdid - 1).relocs++;
410 /* This is the first pass over the data,
411 just remember that we need a reloc. */
416 EDATA (abfd, otr->esdid - 1).section->relocation + rn;
417 n->address = dst_idx;
419 n->sym_ptr_ptr = (asymbol **) (size_t) esdid;
421 n->howto = versados_howto_table + ((j & 1) * 2) + (sizeinwords - 1);
426 dst_idx += sizeinwords * 2;
432 if (dst_idx < esdid->section->size)
435 /* Absolute code, comes in 16 bit lumps. */
436 contents[dst_idx] = srcp[0];
437 contents[dst_idx + 1] = srcp[1];
443 EDATA (abfd, otr->esdid - 1).pc = dst_idx;
445 if (!contents && need_contents)
447 bfd_size_type size = esdid->section->size;
448 esdid->contents = bfd_alloc (abfd, size);
453 versados_scan (bfd *abfd)
461 VDATA (abfd)->stringlen = 0;
462 VDATA (abfd)->nrefs = 0;
463 VDATA (abfd)->ndefs = 0;
464 VDATA (abfd)->ref_idx = 0;
465 VDATA (abfd)->def_idx = 0;
466 VDATA (abfd)->pass_2_done = 0;
472 if (!get_record (abfd, &any))
474 switch (any.header.type)
482 process_esd (abfd, &any.esd, 1);
485 process_otr (abfd, &any.otr, 1);
490 /* Now allocate space for the relocs and sections. */
491 VDATA (abfd)->nrefs = VDATA (abfd)->ref_idx;
492 VDATA (abfd)->ndefs = VDATA (abfd)->def_idx;
493 VDATA (abfd)->ref_idx = 0;
494 VDATA (abfd)->def_idx = 0;
496 abfd->symcount = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs;
498 for (i = 0; i < 16; i++)
500 struct esdid *esdid = &EDATA (abfd, i);
504 amt = (bfd_size_type) esdid->relocs * sizeof (arelent);
505 esdid->section->relocation = bfd_alloc (abfd, amt);
510 esdid->section->flags |= SEC_HAS_CONTENTS | SEC_LOAD;
512 esdid->section->reloc_count = esdid->relocs;
514 esdid->section->flags |= SEC_RELOC;
518 /* Add an entry into the symbol table for it. */
520 VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
524 abfd->symcount += nsecs;
526 amt = abfd->symcount;
527 amt *= sizeof (asymbol);
528 VDATA (abfd)->symbols = bfd_alloc (abfd, amt);
530 amt = VDATA (abfd)->stringlen;
531 VDATA (abfd)->strings = bfd_alloc (abfd, amt);
533 if ((VDATA (abfd)->symbols == NULL && abfd->symcount > 0)
534 || (VDATA (abfd)->strings == NULL && VDATA (abfd)->stringlen > 0))
537 /* Actually fill in the section symbols,
538 we stick them at the end of the table. */
539 for (j = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs, i = 0; i < 16; i++)
541 struct esdid *esdid = &EDATA (abfd, i);
542 asection *sec = esdid->section;
546 asymbol *s = VDATA (abfd)->symbols + j;
547 s->name = new_symbol_string (abfd, sec->name);
549 s->flags = BSF_LOCAL;
557 abfd->flags |= HAS_SYMS;
559 /* Set this to nsecs - since we've already planted the section
561 VDATA (abfd)->nsecsyms = nsecs;
563 VDATA (abfd)->ref_idx = 0;
568 /* Check whether an existing file is a versados file. */
570 static const bfd_target *
571 versados_object_p (bfd *abfd)
573 struct ext_vheader ext;
575 tdata_type *tdata_save;
577 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
580 if (bfd_bread (&len, (bfd_size_type) 1, abfd) != 1)
582 if (bfd_get_error () != bfd_error_system_call)
583 bfd_set_error (bfd_error_wrong_format);
587 if (bfd_bread (&ext.type, (bfd_size_type) len, abfd) != len)
589 if (bfd_get_error () != bfd_error_system_call)
590 bfd_set_error (bfd_error_wrong_format);
594 /* We guess that the language field will never be larger than 10.
595 In sample files, it is always either 0 or 1. Checking for this
596 prevents confusion with Intel Hex files. */
597 if (ext.type != VHEADER
600 bfd_set_error (bfd_error_wrong_format);
604 /* OK, looks like a record, build the tdata and read in. */
605 tdata_save = abfd->tdata.versados_data;
606 if (!versados_mkobject (abfd) || !versados_scan (abfd))
608 abfd->tdata.versados_data = tdata_save;
616 versados_pass_2 (bfd *abfd)
620 if (VDATA (abfd)->pass_2_done)
623 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
626 VDATA (abfd)->es_done = ES_BASE;
628 /* Read records till we get to where we want to be. */
631 get_record (abfd, &any);
632 switch (any.header.type)
635 VDATA (abfd)->pass_2_done = 1;
638 process_esd (abfd, &any.esd, 2);
641 process_otr (abfd, &any.otr, 2);
648 versados_get_section_contents (bfd *abfd,
654 if (!versados_pass_2 (abfd))
658 EDATA (abfd, section->target_index).contents + offset,
664 #define versados_get_section_contents_in_window \
665 _bfd_generic_get_section_contents_in_window
668 versados_set_section_contents (bfd *abfd ATTRIBUTE_UNUSED,
669 sec_ptr section ATTRIBUTE_UNUSED,
670 const void * location ATTRIBUTE_UNUSED,
671 file_ptr offset ATTRIBUTE_UNUSED,
672 bfd_size_type bytes_to_do ATTRIBUTE_UNUSED)
678 versados_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
679 struct bfd_link_info *info ATTRIBUTE_UNUSED)
684 /* Return the amount of memory needed to read the symbol table. */
687 versados_get_symtab_upper_bound (bfd *abfd)
689 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
692 /* Return the symbol table. */
695 versados_canonicalize_symtab (bfd *abfd, asymbol **alocation)
697 unsigned int symcount = bfd_get_symcount (abfd);
701 versados_pass_2 (abfd);
703 for (i = 0, s = VDATA (abfd)->symbols;
714 versados_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
718 bfd_symbol_info (symbol, ret);
722 versados_print_symbol (bfd *abfd,
725 bfd_print_symbol_type how)
727 FILE *file = (FILE *) afile;
731 case bfd_print_symbol_name:
732 fprintf (file, "%s", symbol->name);
735 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
736 fprintf (file, " %-5s %s",
737 symbol->section->name,
743 versados_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
746 return (asect->reloc_count + 1) * sizeof (arelent *);
750 versados_canonicalize_reloc (bfd *abfd,
758 versados_pass_2 (abfd);
759 src = section->relocation;
760 if (!EDATA (abfd, section->target_index).donerel)
762 EDATA (abfd, section->target_index).donerel = 1;
763 /* Translate from indexes to symptr ptrs. */
764 for (count = 0; count < section->reloc_count; count++)
766 int esdid = (int) (size_t) src[count].sym_ptr_ptr;
769 src[count].sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
770 else if (esdid < ES_BASE)
772 /* Section relative thing. */
773 struct esdid *e = &EDATA (abfd, esdid - 1);
775 src[count].sym_ptr_ptr = e->section->symbol_ptr_ptr;
778 src[count].sym_ptr_ptr = symbols + esdid - ES_BASE;
782 for (count = 0; count < section->reloc_count; count++)
786 return section->reloc_count;
789 #define versados_close_and_cleanup _bfd_generic_close_and_cleanup
790 #define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
791 #define versados_new_section_hook _bfd_generic_new_section_hook
792 #define versados_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
793 #define versados_bfd_is_local_label_name bfd_generic_is_local_label_name
794 #define versados_get_lineno _bfd_nosymbols_get_lineno
795 #define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
796 #define versados_find_inliner_info _bfd_nosymbols_find_inliner_info
797 #define versados_make_empty_symbol _bfd_generic_make_empty_symbol
798 #define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
799 #define versados_read_minisymbols _bfd_generic_read_minisymbols
800 #define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
801 #define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
802 #define versados_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
803 #define versados_set_arch_mach bfd_default_set_arch_mach
804 #define versados_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
805 #define versados_bfd_relax_section bfd_generic_relax_section
806 #define versados_bfd_gc_sections bfd_generic_gc_sections
807 #define versados_bfd_merge_sections bfd_generic_merge_sections
808 #define versados_bfd_is_group_section bfd_generic_is_group_section
809 #define versados_bfd_discard_group bfd_generic_discard_group
810 #define versados_section_already_linked _bfd_generic_section_already_linked
811 #define versados_bfd_define_common_symbol bfd_generic_define_common_symbol
812 #define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
813 #define versados_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
814 #define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
815 #define versados_bfd_link_just_syms _bfd_generic_link_just_syms
816 #define versados_bfd_final_link _bfd_generic_final_link
817 #define versados_bfd_link_split_section _bfd_generic_link_split_section
819 const bfd_target versados_vec =
821 "versados", /* Name. */
822 bfd_target_versados_flavour,
823 BFD_ENDIAN_BIG, /* Target byte order. */
824 BFD_ENDIAN_BIG, /* Target headers byte order. */
825 (HAS_RELOC | EXEC_P | /* Object flags. */
826 HAS_LINENO | HAS_DEBUG |
827 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
828 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
829 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */
830 0, /* Leading underscore. */
831 ' ', /* AR_pad_char. */
832 16, /* AR_max_namelen. */
833 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
834 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
835 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
836 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
837 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
838 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
842 versados_object_p, /* bfd_check_format. */
849 _bfd_generic_mkarchive,
852 { /* bfd_write_contents. */
855 _bfd_write_archive_contents,
859 BFD_JUMP_TABLE_GENERIC (versados),
860 BFD_JUMP_TABLE_COPY (_bfd_generic),
861 BFD_JUMP_TABLE_CORE (_bfd_nocore),
862 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
863 BFD_JUMP_TABLE_SYMBOLS (versados),
864 BFD_JUMP_TABLE_RELOCS (versados),
865 BFD_JUMP_TABLE_WRITE (versados),
866 BFD_JUMP_TABLE_LINK (versados),
867 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),