1 /* BFD back-end for VERSAdos-E objects.
3 Versados is a Motorola trademark.
5 Copyright 1995 Free Software Foundation, Inc.
6 Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 VERSAdos-E relocateable object file format
30 This module supports reading of VERSAdos relocateable
33 A VERSAdos file looks like contains
35 o Indentification Record
36 o External Symbol Definition Record
46 #include "libiberty.h"
49 static boolean versados_mkobject PARAMS ((bfd *));
50 static boolean versados_scan PARAMS ((bfd *));
51 static const bfd_target *versados_object_p PARAMS ((bfd *));
60 #define ES_BASE 17 /* first symbol has esdid 17 */
62 /* Per file target dependent information */
64 /* one for each section */
67 asection *section; /* ptr to bfd version */
68 unsigned char *contents; /* used to build image */
70 int relocs; /* reloc count, valid end of pass 1 */
71 int donerel; /* have relocs been translated */
74 typedef struct versados_data_struct
76 int es_done; /* count of symbol index, starts at ES_BASE */
77 asymbol *symbols; /* pointer to local symbols */
78 char *strings; /* strings of all the above */
79 int stringlen; /* len of string table (valid end of pass1) */
80 int nsyms; /* number of symbols (valid end of pass1) */
81 int nsecsyms; /* number of sections */
85 struct esdid e[16]; /* per section info */
86 int alert; /* to see if we're trampling */
87 asymbol *rest[256 - 16]; /* per symbol info */
92 #define VDATA(abfd) (abfd->tdata.versados_data)
93 #define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
94 #define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
102 unsigned char data[200];
108 char type; /* record type */
109 char name[10]; /* module name */
110 char rev; /* module rev number */
126 unsigned char esd_entries[1];
129 #define EST_SHRT_REL_SEC 1
130 #define EST_STD_REL_SEC 2
131 #define ESD_XDEF_IN_SEC 4
132 #define ESD_XREF_SYM 7
136 struct ext_vheader header;
141 /* Initialize by filling in the hex conversion array. */
147 /* Set up the tdata information. */
150 versados_mkobject (abfd)
153 if (abfd->tdata.versados_data == NULL)
155 tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
158 bfd_set_error (bfd_error_no_memory);
161 abfd->tdata.versados_data = tdata;
162 tdata->symbols = NULL;
163 VDATA(abfd)->alert = 0x12345678;
166 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
171 /* Report a problem in an S record file. FIXME: This probably should
172 not call fprintf, but we really do need some mechanism for printing
178 versados_new_symbol (abfd, snum, name, val, sec)
185 asymbol *n = VDATA (abfd)->symbols + snum;
196 get_record (abfd, ptr)
200 bfd_read (&ptr->size, 1, 1, abfd);
201 if (bfd_read ((char *) ptr + 1, 1, ptr->size, abfd) != ptr->size)
210 unsigned char *p = *pp;
212 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
220 char *p = (char *) *pp;
233 new_symbol_string (abfd, name)
237 char *n = VDATA (abfd)->strings;
238 strcpy (VDATA (abfd)->strings, name);
239 VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
245 process_esd (abfd, esd, pass)
250 /* Read through the ext def for the est entries */
251 int togo = esd->size - 2;
256 unsigned char *ptr = esd->esd_entries;
257 unsigned char *end = ptr + togo;
260 int scn = *ptr & 0xf;
261 int typ = (*ptr >> 4) & 0xf;
263 /* Declare this section */
264 sprintf (name, "%d", scn);
265 sec = bfd_make_section_old_way (abfd, strdup (name));
266 sec->target_index = scn;
267 EDATA (abfd, scn).section = sec;
276 int snum = VDATA (abfd)->nsyms++;
280 VDATA (abfd)->stringlen += strlen (name) + 1;
286 char *n = new_symbol_string (abfd, name);
287 s = versados_new_symbol (abfd, snum, n, 0,
288 &bfd_und_section, scn);
289 esidx = VDATA (abfd)->es_done++;
290 RDATA (abfd, esidx - ES_BASE) = s;
296 start = get_4 (&ptr);
298 case EST_STD_REL_SEC:
299 case EST_SHRT_REL_SEC:
301 sec->_raw_size = get_4 (&ptr);
302 sec->flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
305 case ESD_XDEF_IN_SEC:
307 int snum = VDATA (abfd)->nsyms++;
313 /* Just remember the symbol */
314 VDATA (abfd)->stringlen += strlen (name) + 1;
319 char *n = new_symbol_string (abfd, name);
320 s = versados_new_symbol (abfd, snum, n, val, sec, scn);
321 s->flags |= BSF_GLOBAL;
331 #define R_RELWORD_NEG 3
332 #define R_RELLONG_NEG 4
334 reloc_howto_type versados_howto_table[] =
336 HOWTO (R_RELWORD, 0, 1, 16, false,
337 0, complain_overflow_bitfield, 0,
338 "+v16", true, 0x0000ffff, 0x0000ffff, false),
339 HOWTO (R_RELLONG, 0, 2, 32, false,
340 0, complain_overflow_bitfield, 0,
341 "+v32", true, 0xffffffff, 0xffffffff, false),
343 HOWTO (R_RELWORD_NEG, 0, -1, 16, false,
344 0, complain_overflow_bitfield, 0,
345 "-v16", true, 0x0000ffff, 0x0000ffff, false),
346 HOWTO (R_RELLONG_NEG, 0, -2, 32, false,
347 0, complain_overflow_bitfield, 0,
348 "-v32", true, 0xffffffff, 0xffffffff, false),
353 process_otr (abfd, otr, 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 unsigned char *contents = EDATA (abfd, otr->esdid - 1).contents;
369 int dst_idx = EDATA (abfd, otr->esdid - 1).pc;
370 for (shift = (1 << 31); srcp < endp; shift >>= 1)
375 int esdids = (flag >> 5) & 3;
376 int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
377 int offsetlen = flag & 7;
380 for (j = 0; j < esdids; j++)
383 /* don't process zero esdids */
386 int rn = EDATA (abfd, otr->esdid - 1).relocs++;
389 /* this is the first pass over the data,
390 just remember that we need a reloc */
395 EDATA (abfd, otr->esdid - 1).section->relocation + rn;
396 n->address = dst_idx;
398 n->sym_ptr_ptr = (asymbol **) esdid;
401 = versados_howto_table
412 /* MSB is sign extended */
413 val = srcp[0] | ((srcp[0] & 0x80) ? ~0xff : 0);
414 for (j = 1; j < offsetlen; j++)
424 /* Insert addend into stream */
429 contents[dst_idx++] = val >> 24;
430 contents[dst_idx++] = val >> 16;
433 contents[dst_idx++] = val >> 8;
434 contents[dst_idx++] = val >> 0;
443 /* absolute code, comes in 16 bit lumps */
444 contents[dst_idx] = srcp[0];
445 contents[dst_idx + 1] = srcp[1];
451 EDATA (abfd, otr->esdid - 1).pc = dst_idx;
466 if (!get_record (abfd, &any))
468 switch (any.header.type)
476 process_esd (abfd, &any.esd, 1);
479 process_otr (abfd, &any.otr, 1);
484 /* Now allocate space for the relocs and sections */
486 for (i = 0; i < 16; i++)
488 struct esdid *esdid = &EDATA (abfd, i);
491 esdid->section->relocation
492 = (arelent *) bfd_alloc (abfd, sizeof (arelent) * esdid->relocs);
495 = (unsigned char *) bfd_alloc (abfd, esdid->section->_raw_size);
498 esdid->section->reloc_count = esdid->relocs;
500 esdid->section->flags |= SEC_RELOC;
503 /* Add an entry into the symbol table for it */
505 VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
508 VDATA (abfd)->symbols = (asymbol *) bfd_alloc (abfd,
509 sizeof (asymbol) * abfd->symcount);
510 VDATA (abfd)->strings = bfd_alloc (abfd, VDATA (abfd)->stringlen);
511 abfd->symcount = VDATA (abfd)->nsyms;
513 /* Actually fill in the section symbols */
515 for (j = 0, i = 0; i < 16; i++)
517 struct esdid *esdid = &EDATA (abfd, i);
518 asection *sec = esdid->section;
521 asymbol *s = VDATA (abfd)->symbols + j;
522 s->name = new_symbol_string (abfd, sec->name);
524 s->flags = BSF_LOCAL;
532 abfd->flags |= HAS_SYMS;
533 VDATA (abfd)->nsecsyms = j;
534 VDATA (abfd)->nsyms = j;
540 /* Check whether an existing file is a versados file. */
542 static const bfd_target *
543 versados_object_p (abfd)
546 struct ext_vheader ext;
549 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET))
553 bfd_read (&len, 1, 1, abfd);
554 if (bfd_read (&ext.type, 1, len, abfd) != len
557 bfd_set_error (bfd_error_wrong_format);
561 /* ok, looks like a record, build the tdata and read
564 if (!versados_mkobject (abfd)
565 || !versados_scan (abfd))
573 versados_pass_2 (abfd)
578 if (VDATA (abfd)->pass_2_done)
581 if (bfd_seek (abfd, 0, SEEK_SET) != 0)
584 VDATA (abfd)->es_done = ES_BASE;
586 /* read records till we get to where we want to be */
590 get_record (abfd, &any);
591 switch (any.header.type)
594 VDATA (abfd)->pass_2_done = 1;
597 process_esd (abfd, &any.esd, 2);
600 process_otr (abfd, &any.otr, 2);
607 versados_get_section_contents (abfd, section, location, offset, count)
614 if (!versados_pass_2 (abfd))
618 EDATA (abfd, section->target_index).contents + offset,
625 versados_set_section_contents (abfd, section, location, offset, bytes_to_do)
630 bfd_size_type bytes_to_do;
638 versados_sizeof_headers (abfd, exec)
646 versados_make_empty_symbol (abfd)
649 asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
655 /* Return the amount of memory needed to read the symbol table. */
658 versados_get_symtab_upper_bound (abfd)
661 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
664 /* Return the symbol table. */
667 versados_get_symtab (abfd, alocation)
671 unsigned int symcount = bfd_get_symcount (abfd);
675 versados_pass_2 (abfd);
677 for (i = 0, s = VDATA (abfd)->symbols;
691 versados_get_symbol_info (ignore_abfd, symbol, ret)
696 bfd_symbol_info (symbol, ret);
701 versados_print_symbol (ignore_abfd, afile, symbol, how)
705 bfd_print_symbol_type how;
707 FILE *file = (FILE *) afile;
710 case bfd_print_symbol_name:
711 fprintf (file, "%s", symbol->name);
714 bfd_print_symbol_vandf ((PTR) file, symbol);
715 fprintf (file, " %-5s %s",
716 symbol->section->name,
723 versados_get_reloc_upper_bound (abfd, asect)
727 return (asect->reloc_count + 1) * sizeof (arelent *);
732 versados_canonicalize_reloc (abfd, section, relptr, symbols)
741 versados_pass_2 (abfd);
742 src = section->relocation;
743 if (!EDATA (abfd, section->target_index).donerel)
745 EDATA (abfd, section->target_index).donerel = 1;
746 /* translate from indexes to symptr ptrs */
747 for (count = 0; count < section->reloc_count; count++)
749 int esdid = (int) src[count].sym_ptr_ptr;
750 if (esdid < ES_BASE) /* Section relative thing */
752 src[count].sym_ptr_ptr
753 = EDATA (abfd, esdid - 1).section->symbol_ptr_ptr;
757 src[count].sym_ptr_ptr
758 = symbols + esdid - 17 + VDATA (abfd)->nsecsyms;
764 for (count = 0; count < section->reloc_count; count++)
769 return section->reloc_count;
772 #define versados_close_and_cleanup _bfd_generic_close_and_cleanup
773 #define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
774 #define versados_new_section_hook _bfd_generic_new_section_hook
776 #define versados_bfd_is_local_label bfd_generic_is_local_label
777 #define versados_get_lineno _bfd_nosymbols_get_lineno
778 #define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
779 #define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
781 #define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
783 #define versados_set_arch_mach bfd_default_set_arch_mach
785 #define versados_bfd_get_relocated_section_contents \
786 bfd_generic_get_relocated_section_contents
787 #define versados_bfd_relax_section bfd_generic_relax_section
788 #define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
789 #define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
790 #define versados_bfd_final_link _bfd_generic_final_link
791 #define versados_bfd_link_split_section _bfd_generic_link_split_section
793 const bfd_target versados_vec =
795 "versados", /* name */
796 bfd_target_versados_flavour,
797 true, /* target byte order */
798 true, /* target headers byte order */
799 (HAS_RELOC | EXEC_P | /* object flags */
800 HAS_LINENO | HAS_DEBUG |
801 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
802 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
803 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
804 0, /* leading underscore */
805 ' ', /* ar_pad_char */
806 16, /* ar_max_namelen */
807 1, /* minimum alignment */
808 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
809 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
810 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
811 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
812 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
813 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
817 versados_object_p, /* bfd_check_format */
824 _bfd_generic_mkarchive,
827 { /* bfd_write_contents */
830 _bfd_write_archive_contents,
834 BFD_JUMP_TABLE_GENERIC (versados),
835 BFD_JUMP_TABLE_COPY (_bfd_generic),
836 BFD_JUMP_TABLE_CORE (_bfd_nocore),
837 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
838 BFD_JUMP_TABLE_SYMBOLS (versados),
839 BFD_JUMP_TABLE_RELOCS (versados),
840 BFD_JUMP_TABLE_WRITE (versados),
841 BFD_JUMP_TABLE_LINK (versados),
842 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),