1 /* BFD back-end for VERSAdos-E objects.
2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
45 #include "libiberty.h"
47 static boolean versados_mkobject PARAMS ((bfd *));
48 static boolean versados_scan PARAMS ((bfd *));
49 static const bfd_target *versados_object_p PARAMS ((bfd *));
50 static asymbol *versados_new_symbol PARAMS ((bfd *, int, const char *, bfd_vma, asection *));
51 static char *new_symbol_string PARAMS ((bfd *, const char *));
52 static const bfd_target *versados_object_p PARAMS ((bfd *));
53 static boolean versados_pass_2 PARAMS ((bfd *));
54 static boolean versados_get_section_contents
55 PARAMS ((bfd *, asection *, void *, file_ptr, bfd_size_type));
56 static boolean versados_set_section_contents
57 PARAMS ((bfd *, sec_ptr, void *, file_ptr, bfd_size_type));
58 static int versados_sizeof_headers PARAMS ((bfd *, boolean));
59 static long int versados_get_symtab_upper_bound PARAMS ((bfd *));
60 static long int versados_get_symtab PARAMS ((bfd *, asymbol **));
61 static void versados_get_symbol_info
62 PARAMS ((bfd *, asymbol *, symbol_info *));
63 static void versados_print_symbol
64 PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
65 static long versados_get_reloc_upper_bound
66 PARAMS ((bfd *, sec_ptr));
67 static long versados_canonicalize_reloc
68 PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
75 #define ES_BASE 17 /* first symbol has esdid 17 */
77 /* Per file target dependent information */
79 /* one for each section */
82 asection *section; /* ptr to bfd version */
83 unsigned char *contents; /* used to build image */
85 int relocs; /* reloc count, valid end of pass 1 */
86 int donerel; /* have relocs been translated */
89 typedef struct versados_data_struct
91 int es_done; /* count of symbol index, starts at ES_BASE */
92 asymbol *symbols; /* pointer to local symbols */
93 char *strings; /* strings of all the above */
94 int stringlen; /* len of string table (valid end of pass1) */
95 int nsecsyms; /* number of sections */
97 int ndefs; /* number of exported symbols (they dont get esdids) */
98 int nrefs; /* number of imported symbols (valid end of pass1) */
100 int ref_idx; /* current processed value of the above */
105 struct esdid e[16]; /* per section info */
106 int alert; /* to see if we're trampling */
107 asymbol *rest[256 - 16]; /* per symbol info */
112 #define VDATA(abfd) (abfd->tdata.versados_data)
113 #define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
114 #define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
120 unsigned char map[4];
122 unsigned char data[200];
128 char type; /* record type */
129 char name[10]; /* module name */
130 char rev; /* module rev number */
146 unsigned char esd_entries[1];
150 #define ESD_STD_REL_SEC 2
151 #define ESD_SHRT_REL_SEC 3
152 #define ESD_XDEF_IN_SEC 4
153 #define ESD_XREF_SYM 7
154 #define ESD_XREF_SEC 6
155 #define ESD_XDEF_IN_ABS 5
159 struct ext_vheader header;
164 static int get_record PARAMS ((bfd *, union ext_any *));
165 static int get_4 PARAMS ((unsigned char **));
166 static void get_10 PARAMS ((unsigned char **, char *));
167 static void process_esd PARAMS ((bfd *, struct ext_esd *, int));
168 static int get_offset PARAMS ((int, unsigned char *));
169 static void process_otr PARAMS ((bfd *, struct ext_otr *, int));
171 /* Initialize by filling in the hex conversion array. */
173 /* Set up the tdata information. */
176 versados_mkobject (abfd)
179 if (abfd->tdata.versados_data == NULL)
181 bfd_size_type amt = sizeof (tdata_type);
182 tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, amt);
185 abfd->tdata.versados_data = tdata;
186 tdata->symbols = NULL;
187 VDATA (abfd)->alert = 0x12345678;
190 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
194 /* Report a problem in an S record file. FIXME: This probably should
195 not call fprintf, but we really do need some mechanism for printing
199 versados_new_symbol (abfd, snum, name, val, sec)
206 asymbol *n = VDATA (abfd)->symbols + snum;
216 get_record (abfd, ptr)
220 if (bfd_bread (&ptr->size, (bfd_size_type) 1, abfd) != 1
221 || (bfd_bread ((char *) ptr + 1, (bfd_size_type) ptr->size, abfd)
231 unsigned char *p = *pp;
233 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
241 char *p = (char *) *pp;
254 new_symbol_string (abfd, name)
258 char *n = VDATA (abfd)->strings;
259 strcpy (VDATA (abfd)->strings, name);
260 VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
265 process_esd (abfd, esd, pass)
270 /* Read through the ext def for the est entries */
271 int togo = esd->size - 2;
276 unsigned char *ptr = esd->esd_entries;
277 unsigned char *end = ptr + togo;
280 int scn = *ptr & 0xf;
281 int typ = (*ptr >> 4) & 0xf;
283 /* Declare this section */
284 sprintf (name, "%d", scn);
285 sec = bfd_make_section_old_way (abfd, strdup (name));
286 sec->target_index = scn;
287 EDATA (abfd, scn).section = sec;
296 int snum = VDATA (abfd)->ref_idx++;
300 VDATA (abfd)->stringlen += strlen (name) + 1;
306 char *n = new_symbol_string (abfd, name);
307 s = versados_new_symbol (abfd, snum, n, (bfd_vma) 0,
308 bfd_und_section_ptr);
309 esidx = VDATA (abfd)->es_done++;
310 RDATA (abfd, esidx - ES_BASE) = s;
317 start = get_4 (&ptr);
319 case ESD_STD_REL_SEC:
320 case ESD_SHRT_REL_SEC:
322 sec->_raw_size = get_4 (&ptr);
323 sec->flags |= SEC_ALLOC;
326 case ESD_XDEF_IN_ABS:
327 sec = (asection *) & bfd_abs_section;
328 case ESD_XDEF_IN_SEC:
330 int snum = VDATA (abfd)->def_idx++;
336 /* Just remember the symbol */
337 VDATA (abfd)->stringlen += strlen (name) + 1;
342 char *n = new_symbol_string (abfd, name);
343 s = versados_new_symbol (abfd, snum + VDATA (abfd)->nrefs, n,
345 s->flags |= BSF_GLOBAL;
355 #define R_RELWORD_NEG 3
356 #define R_RELLONG_NEG 4
358 reloc_howto_type versados_howto_table[] =
360 HOWTO (R_RELWORD, 0, 1, 16, false,
361 0, complain_overflow_dont, 0,
362 "+v16", true, 0x0000ffff, 0x0000ffff, false),
363 HOWTO (R_RELLONG, 0, 2, 32, false,
364 0, complain_overflow_dont, 0,
365 "+v32", true, 0xffffffff, 0xffffffff, false),
367 HOWTO (R_RELWORD_NEG, 0, -1, 16, false,
368 0, complain_overflow_dont, 0,
369 "-v16", true, 0x0000ffff, 0x0000ffff, false),
370 HOWTO (R_RELLONG_NEG, 0, -2, 32, false,
371 0, complain_overflow_dont, 0,
372 "-v32", true, 0xffffffff, 0xffffffff, false),
376 get_offset (len, ptr)
387 for (i = 1; i < len; i++)
388 val = (val << 8) | *ptr++;
395 process_otr (abfd, otr, pass)
401 unsigned char *srcp = otr->data;
402 unsigned char *endp = (unsigned char *) otr + otr->size;
403 unsigned int bits = (otr->map[0] << 24)
404 | (otr->map[1] << 16)
406 | (otr->map[3] << 0);
408 struct esdid *esdid = &EDATA (abfd, otr->esdid - 1);
409 unsigned char *contents = esdid->contents;
410 int need_contents = 0;
411 unsigned int dst_idx = esdid->pc;
413 for (shift = ((unsigned long) 1 << 31); shift && srcp < endp; shift >>= 1)
418 int esdids = (flag >> 5) & 0x7;
419 int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
420 int offsetlen = flag & 0x7;
425 /* A zero esdid means the new pc is the offset given */
426 dst_idx += get_offset (offsetlen, srcp);
431 int val = get_offset (offsetlen, srcp + esdids);
435 for (j = 0; j < sizeinwords * 2; j++)
437 contents[dst_idx + (sizeinwords * 2) - j - 1] = val;
441 for (j = 0; j < esdids; j++)
447 int rn = EDATA (abfd, otr->esdid - 1).relocs++;
450 /* this is the first pass over the data,
451 just remember that we need a reloc */
456 EDATA (abfd, otr->esdid - 1).section->relocation + rn;
457 n->address = dst_idx;
459 n->sym_ptr_ptr = (asymbol **) esdid;
461 n->howto = versados_howto_table + ((j & 1) * 2) + (sizeinwords - 1);
466 dst_idx += sizeinwords * 2;
472 if (dst_idx < esdid->section->_raw_size)
475 /* absolute code, comes in 16 bit lumps */
476 contents[dst_idx] = srcp[0];
477 contents[dst_idx + 1] = srcp[1];
483 EDATA (abfd, otr->esdid - 1).pc = dst_idx;
485 if (!contents && need_contents)
487 bfd_size_type size = esdid->section->_raw_size;
488 esdid->contents = (unsigned char *) bfd_alloc (abfd, size);
502 VDATA (abfd)->stringlen = 0;
503 VDATA (abfd)->nrefs = 0;
504 VDATA (abfd)->ndefs = 0;
505 VDATA (abfd)->ref_idx = 0;
506 VDATA (abfd)->def_idx = 0;
507 VDATA (abfd)->pass_2_done = 0;
512 if (!get_record (abfd, &any))
514 switch (any.header.type)
522 process_esd (abfd, &any.esd, 1);
525 process_otr (abfd, &any.otr, 1);
530 /* Now allocate space for the relocs and sections */
532 VDATA (abfd)->nrefs = VDATA (abfd)->ref_idx;
533 VDATA (abfd)->ndefs = VDATA (abfd)->def_idx;
534 VDATA (abfd)->ref_idx = 0;
535 VDATA (abfd)->def_idx = 0;
537 abfd->symcount = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs;
539 for (i = 0; i < 16; i++)
541 struct esdid *esdid = &EDATA (abfd, i);
544 amt = (bfd_size_type) esdid->relocs * sizeof (arelent);
545 esdid->section->relocation = (arelent *) bfd_alloc (abfd, amt);
550 esdid->section->flags |= SEC_HAS_CONTENTS | SEC_LOAD;
552 esdid->section->reloc_count = esdid->relocs;
554 esdid->section->flags |= SEC_RELOC;
558 /* Add an entry into the symbol table for it */
560 VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
564 abfd->symcount += nsecs;
566 amt = abfd->symcount;
567 amt *= sizeof (asymbol);
568 VDATA (abfd)->symbols = (asymbol *) bfd_alloc (abfd, amt);
570 amt = VDATA (abfd)->stringlen;
571 VDATA (abfd)->strings = bfd_alloc (abfd, amt);
573 if ((VDATA (abfd)->symbols == NULL && abfd->symcount > 0)
574 || (VDATA (abfd)->strings == NULL && VDATA (abfd)->stringlen > 0))
577 /* Actually fill in the section symbols,
578 we stick them at the end of the table */
580 for (j = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs, i = 0; i < 16; i++)
582 struct esdid *esdid = &EDATA (abfd, i);
583 asection *sec = esdid->section;
586 asymbol *s = VDATA (abfd)->symbols + j;
587 s->name = new_symbol_string (abfd, sec->name);
589 s->flags = BSF_LOCAL;
596 abfd->flags |= HAS_SYMS;
598 /* Set this to nsecs - since we've already planted the section
600 VDATA (abfd)->nsecsyms = nsecs;
602 VDATA (abfd)->ref_idx = 0;
607 /* Check whether an existing file is a versados file. */
609 static const bfd_target *
610 versados_object_p (abfd)
613 struct ext_vheader ext;
616 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
619 if (bfd_bread (&len, (bfd_size_type) 1, abfd) != 1)
621 if (bfd_get_error () != bfd_error_system_call)
622 bfd_set_error (bfd_error_wrong_format);
626 if (bfd_bread (&ext.type, (bfd_size_type) len, abfd) != len)
628 if (bfd_get_error () != bfd_error_system_call)
629 bfd_set_error (bfd_error_wrong_format);
633 /* We guess that the language field will never be larger than 10.
634 In sample files, it is always either 0 or 1. Checking for this
635 prevents confusion with Intel Hex files. */
636 if (ext.type != VHEADER
639 bfd_set_error (bfd_error_wrong_format);
643 /* OK, looks like a record, build the tdata and read in. */
645 if (!versados_mkobject (abfd)
646 || !versados_scan (abfd))
653 versados_pass_2 (abfd)
658 if (VDATA (abfd)->pass_2_done)
661 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
664 VDATA (abfd)->es_done = ES_BASE;
666 /* read records till we get to where we want to be */
670 get_record (abfd, &any);
671 switch (any.header.type)
674 VDATA (abfd)->pass_2_done = 1;
677 process_esd (abfd, &any.esd, 2);
680 process_otr (abfd, &any.otr, 2);
687 versados_get_section_contents (abfd, section, location, offset, count)
694 if (!versados_pass_2 (abfd))
698 EDATA (abfd, section->target_index).contents + offset,
704 #define versados_get_section_contents_in_window \
705 _bfd_generic_get_section_contents_in_window
708 versados_set_section_contents (abfd, section, location, offset, bytes_to_do)
709 bfd *abfd ATTRIBUTE_UNUSED;
710 sec_ptr section ATTRIBUTE_UNUSED;
711 PTR location ATTRIBUTE_UNUSED;
712 file_ptr offset ATTRIBUTE_UNUSED;
713 bfd_size_type bytes_to_do ATTRIBUTE_UNUSED;
719 versados_sizeof_headers (abfd, exec)
720 bfd *abfd ATTRIBUTE_UNUSED;
721 boolean exec ATTRIBUTE_UNUSED;
726 /* Return the amount of memory needed to read the symbol table. */
729 versados_get_symtab_upper_bound (abfd)
732 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
735 /* Return the symbol table. */
738 versados_get_symtab (abfd, alocation)
742 unsigned int symcount = bfd_get_symcount (abfd);
746 versados_pass_2 (abfd);
748 for (i = 0, s = VDATA (abfd)->symbols;
761 versados_get_symbol_info (ignore_abfd, symbol, ret)
762 bfd *ignore_abfd ATTRIBUTE_UNUSED;
766 bfd_symbol_info (symbol, ret);
770 versados_print_symbol (abfd, afile, symbol, how)
774 bfd_print_symbol_type how;
776 FILE *file = (FILE *) afile;
779 case bfd_print_symbol_name:
780 fprintf (file, "%s", symbol->name);
783 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
784 fprintf (file, " %-5s %s",
785 symbol->section->name,
792 versados_get_reloc_upper_bound (abfd, asect)
793 bfd *abfd ATTRIBUTE_UNUSED;
796 return (asect->reloc_count + 1) * sizeof (arelent *);
800 versados_canonicalize_reloc (abfd, section, relptr, symbols)
809 versados_pass_2 (abfd);
810 src = section->relocation;
811 if (!EDATA (abfd, section->target_index).donerel)
813 EDATA (abfd, section->target_index).donerel = 1;
814 /* translate from indexes to symptr ptrs */
815 for (count = 0; count < section->reloc_count; count++)
817 int esdid = (int) src[count].sym_ptr_ptr;
821 src[count].sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
823 else if (esdid < ES_BASE) /* Section relative thing */
825 struct esdid *e = &EDATA (abfd, esdid - 1);
828 /** relocation relative to section which was
831 src[count].sym_ptr_ptr = e->section->symbol_ptr_ptr;
835 src[count].sym_ptr_ptr = symbols + esdid - ES_BASE;
841 for (count = 0; count < section->reloc_count; count++)
846 return section->reloc_count;
849 #define versados_close_and_cleanup _bfd_generic_close_and_cleanup
850 #define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
851 #define versados_new_section_hook _bfd_generic_new_section_hook
853 #define versados_bfd_is_local_label_name bfd_generic_is_local_label_name
854 #define versados_get_lineno _bfd_nosymbols_get_lineno
855 #define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
856 #define versados_make_empty_symbol _bfd_generic_make_empty_symbol
857 #define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
858 #define versados_read_minisymbols _bfd_generic_read_minisymbols
859 #define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
861 #define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
863 #define versados_set_arch_mach bfd_default_set_arch_mach
865 #define versados_bfd_get_relocated_section_contents \
866 bfd_generic_get_relocated_section_contents
867 #define versados_bfd_relax_section bfd_generic_relax_section
868 #define versados_bfd_gc_sections bfd_generic_gc_sections
869 #define versados_bfd_merge_sections bfd_generic_merge_sections
870 #define versados_bfd_discard_group bfd_generic_discard_group
871 #define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
872 #define versados_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
873 #define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
874 #define versados_bfd_link_just_syms _bfd_generic_link_just_syms
875 #define versados_bfd_final_link _bfd_generic_final_link
876 #define versados_bfd_link_split_section _bfd_generic_link_split_section
878 const bfd_target versados_vec =
880 "versados", /* name */
881 bfd_target_versados_flavour,
882 BFD_ENDIAN_BIG, /* target byte order */
883 BFD_ENDIAN_BIG, /* target headers byte order */
884 (HAS_RELOC | EXEC_P | /* object flags */
885 HAS_LINENO | HAS_DEBUG |
886 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
887 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
888 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
889 0, /* leading underscore */
890 ' ', /* ar_pad_char */
891 16, /* ar_max_namelen */
892 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
893 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
894 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
895 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
896 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
897 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
901 versados_object_p, /* bfd_check_format */
908 _bfd_generic_mkarchive,
911 { /* bfd_write_contents */
914 _bfd_write_archive_contents,
918 BFD_JUMP_TABLE_GENERIC (versados),
919 BFD_JUMP_TABLE_COPY (_bfd_generic),
920 BFD_JUMP_TABLE_CORE (_bfd_nocore),
921 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
922 BFD_JUMP_TABLE_SYMBOLS (versados),
923 BFD_JUMP_TABLE_RELOCS (versados),
924 BFD_JUMP_TABLE_WRITE (versados),
925 BFD_JUMP_TABLE_LINK (versados),
926 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),