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/* BFD back-end for VERSAdos-E objects.
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Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
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Versados is a Motorola trademark.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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VERSAdos-E relocatable object file format
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This module supports reading of VERSAdos relocatable
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A VERSAdos file looks like contains
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o Indentification Record
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o External Symbol Definition Record
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#include "libiberty.h"
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static bfd_boolean versados_mkobject PARAMS ((bfd *));
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static bfd_boolean versados_scan PARAMS ((bfd *));
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static const bfd_target *versados_object_p PARAMS ((bfd *));
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static asymbol *versados_new_symbol
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PARAMS ((bfd *, int, const char *, bfd_vma, asection *));
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static char *new_symbol_string PARAMS ((bfd *, const char *));
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static const bfd_target *versados_object_p PARAMS ((bfd *));
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static bfd_boolean versados_pass_2 PARAMS ((bfd *));
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static bfd_boolean versados_get_section_contents
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PARAMS ((bfd *, asection *, void *, file_ptr, bfd_size_type));
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static bfd_boolean versados_set_section_contents
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PARAMS ((bfd *, sec_ptr, void *, file_ptr, bfd_size_type));
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static int versados_sizeof_headers PARAMS ((bfd *, bfd_boolean));
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static long int versados_get_symtab_upper_bound PARAMS ((bfd *));
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static long int versados_canonicalize_symtab PARAMS ((bfd *, asymbol **));
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static void versados_get_symbol_info
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PARAMS ((bfd *, asymbol *, symbol_info *));
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static void versados_print_symbol
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PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
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static long versados_get_reloc_upper_bound
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PARAMS ((bfd *, sec_ptr));
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static long versados_canonicalize_reloc
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PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
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#define ES_BASE 17 /* first symbol has esdid 17 */
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/* Per file target dependent information */
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/* one for each section */
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asection *section; /* ptr to bfd version */
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unsigned char *contents; /* used to build image */
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int relocs; /* reloc count, valid end of pass 1 */
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int donerel; /* have relocs been translated */
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typedef struct versados_data_struct
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int es_done; /* count of symbol index, starts at ES_BASE */
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asymbol *symbols; /* pointer to local symbols */
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char *strings; /* strings of all the above */
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int stringlen; /* len of string table (valid end of pass1) */
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int nsecsyms; /* number of sections */
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int ndefs; /* number of exported symbols (they dont get esdids) */
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int nrefs; /* number of imported symbols (valid end of pass1) */
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int ref_idx; /* current processed value of the above */
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struct esdid e[16]; /* per section info */
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int alert; /* to see if we're trampling */
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asymbol *rest[256 - 16]; /* per symbol info */
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#define VDATA(abfd) (abfd->tdata.versados_data)
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#define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
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#define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
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unsigned char map[4];
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unsigned char data[200];
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char type; /* record type */
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char name[10]; /* module name */
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char rev; /* module rev number */
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unsigned char esd_entries[1];
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#define ESD_STD_REL_SEC 2
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#define ESD_SHRT_REL_SEC 3
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#define ESD_XDEF_IN_SEC 4
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#define ESD_XREF_SYM 7
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#define ESD_XREF_SEC 6
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#define ESD_XDEF_IN_ABS 5
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struct ext_vheader header;
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static int get_record PARAMS ((bfd *, union ext_any *));
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static int get_4 PARAMS ((unsigned char **));
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static void get_10 PARAMS ((unsigned char **, char *));
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static void process_esd PARAMS ((bfd *, struct ext_esd *, int));
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static int get_offset PARAMS ((int, unsigned char *));
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static void process_otr PARAMS ((bfd *, struct ext_otr *, int));
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/* Initialize by filling in the hex conversion array. */
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/* Set up the tdata information. */
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versados_mkobject (abfd)
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if (abfd->tdata.versados_data == NULL)
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bfd_size_type amt = sizeof (tdata_type);
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tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, amt);
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abfd->tdata.versados_data = tdata;
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tdata->symbols = NULL;
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VDATA (abfd)->alert = 0x12345678;
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bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
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/* Report a problem in an S record file. FIXME: This probably should
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not call fprintf, but we really do need some mechanism for printing
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versados_new_symbol (abfd, snum, name, val, sec)
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asymbol *n = VDATA (abfd)->symbols + snum;
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get_record (abfd, ptr)
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if (bfd_bread (&ptr->size, (bfd_size_type) 1, abfd) != 1
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|| (bfd_bread ((char *) ptr + 1, (bfd_size_type) ptr->size, abfd)
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unsigned char *p = *pp;
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return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
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char *p = (char *) *pp;
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new_symbol_string (abfd, name)
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char *n = VDATA (abfd)->strings;
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strcpy (VDATA (abfd)->strings, name);
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VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
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process_esd (abfd, esd, pass)
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/* Read through the ext def for the est entries */
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int togo = esd->size - 2;
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unsigned char *ptr = esd->esd_entries;
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unsigned char *end = ptr + togo;
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int scn = *ptr & 0xf;
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int typ = (*ptr >> 4) & 0xf;
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/* Declare this section */
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sprintf (name, "%d", scn);
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sec = bfd_make_section_old_way (abfd, strdup (name));
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sec->target_index = scn;
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EDATA (abfd, scn).section = sec;
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int snum = VDATA (abfd)->ref_idx++;
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VDATA (abfd)->stringlen += strlen (name) + 1;
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char *n = new_symbol_string (abfd, name);
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s = versados_new_symbol (abfd, snum, n, (bfd_vma) 0,
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bfd_und_section_ptr);
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esidx = VDATA (abfd)->es_done++;
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RDATA (abfd, esidx - ES_BASE) = s;
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start = get_4 (&ptr);
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case ESD_STD_REL_SEC:
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case ESD_SHRT_REL_SEC:
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sec->_raw_size = get_4 (&ptr);
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sec->flags |= SEC_ALLOC;
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case ESD_XDEF_IN_ABS:
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sec = (asection *) & bfd_abs_section;
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case ESD_XDEF_IN_SEC:
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int snum = VDATA (abfd)->def_idx++;
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/* Just remember the symbol */
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VDATA (abfd)->stringlen += strlen (name) + 1;
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char *n = new_symbol_string (abfd, name);
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s = versados_new_symbol (abfd, snum + VDATA (abfd)->nrefs, n,
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s->flags |= BSF_GLOBAL;
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#define R_RELWORD_NEG 3
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#define R_RELLONG_NEG 4
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reloc_howto_type versados_howto_table[] =
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HOWTO (R_RELWORD, 0, 1, 16, FALSE,
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0, complain_overflow_dont, 0,
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"+v16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
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HOWTO (R_RELLONG, 0, 2, 32, FALSE,
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0, complain_overflow_dont, 0,
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"+v32", TRUE, 0xffffffff, 0xffffffff, FALSE),
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HOWTO (R_RELWORD_NEG, 0, -1, 16, FALSE,
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0, complain_overflow_dont, 0,
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"-v16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
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HOWTO (R_RELLONG_NEG, 0, -2, 32, FALSE,
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0, complain_overflow_dont, 0,
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"-v32", TRUE, 0xffffffff, 0xffffffff, FALSE),
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get_offset (len, ptr)
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for (i = 1; i < len; i++)
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val = (val << 8) | *ptr++;
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process_otr (abfd, otr, pass)
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unsigned char *srcp = otr->data;
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unsigned char *endp = (unsigned char *) otr + otr->size;
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unsigned int bits = (otr->map[0] << 24)
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| (otr->map[1] << 16)
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| (otr->map[3] << 0);
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struct esdid *esdid = &EDATA (abfd, otr->esdid - 1);
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unsigned char *contents = esdid->contents;
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int need_contents = 0;
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unsigned int dst_idx = esdid->pc;
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for (shift = ((unsigned long) 1 << 31); shift && srcp < endp; shift >>= 1)
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int esdids = (flag >> 5) & 0x7;
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int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
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int offsetlen = flag & 0x7;
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/* A zero esdid means the new pc is the offset given */
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dst_idx += get_offset (offsetlen, srcp);
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int val = get_offset (offsetlen, srcp + esdids);
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for (j = 0; j < sizeinwords * 2; j++)
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contents[dst_idx + (sizeinwords * 2) - j - 1] = val;
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for (j = 0; j < esdids; j++)
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int rn = EDATA (abfd, otr->esdid - 1).relocs++;
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/* this is the first pass over the data,
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just remember that we need a reloc */
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EDATA (abfd, otr->esdid - 1).section->relocation + rn;
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n->address = dst_idx;
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n->sym_ptr_ptr = (asymbol **) esdid;
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n->howto = versados_howto_table + ((j & 1) * 2) + (sizeinwords - 1);
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dst_idx += sizeinwords * 2;
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if (dst_idx < esdid->section->_raw_size)
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/* absolute code, comes in 16 bit lumps */
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contents[dst_idx] = srcp[0];
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contents[dst_idx + 1] = srcp[1];
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EDATA (abfd, otr->esdid - 1).pc = dst_idx;
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if (!contents && need_contents)
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bfd_size_type size = esdid->section->_raw_size;
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esdid->contents = (unsigned char *) bfd_alloc (abfd, size);
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VDATA (abfd)->stringlen = 0;
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VDATA (abfd)->nrefs = 0;
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VDATA (abfd)->ndefs = 0;
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VDATA (abfd)->ref_idx = 0;
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VDATA (abfd)->def_idx = 0;
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VDATA (abfd)->pass_2_done = 0;
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if (!get_record (abfd, &any))
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switch (any.header.type)
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process_esd (abfd, &any.esd, 1);
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process_otr (abfd, &any.otr, 1);
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/* Now allocate space for the relocs and sections */
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VDATA (abfd)->nrefs = VDATA (abfd)->ref_idx;
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VDATA (abfd)->ndefs = VDATA (abfd)->def_idx;
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VDATA (abfd)->ref_idx = 0;
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VDATA (abfd)->def_idx = 0;
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abfd->symcount = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs;
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for (i = 0; i < 16; i++)
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struct esdid *esdid = &EDATA (abfd, i);
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amt = (bfd_size_type) esdid->relocs * sizeof (arelent);
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esdid->section->relocation = (arelent *) bfd_alloc (abfd, amt);
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esdid->section->flags |= SEC_HAS_CONTENTS | SEC_LOAD;
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esdid->section->reloc_count = esdid->relocs;
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esdid->section->flags |= SEC_RELOC;
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/* Add an entry into the symbol table for it */
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VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
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abfd->symcount += nsecs;
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amt = abfd->symcount;
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amt *= sizeof (asymbol);
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VDATA (abfd)->symbols = (asymbol *) bfd_alloc (abfd, amt);
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amt = VDATA (abfd)->stringlen;
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VDATA (abfd)->strings = bfd_alloc (abfd, amt);
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if ((VDATA (abfd)->symbols == NULL && abfd->symcount > 0)
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|| (VDATA (abfd)->strings == NULL && VDATA (abfd)->stringlen > 0))
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/* Actually fill in the section symbols,
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we stick them at the end of the table */
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for (j = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs, i = 0; i < 16; i++)
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struct esdid *esdid = &EDATA (abfd, i);
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asection *sec = esdid->section;
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asymbol *s = VDATA (abfd)->symbols + j;
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s->name = new_symbol_string (abfd, sec->name);
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s->flags = BSF_LOCAL;
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abfd->flags |= HAS_SYMS;
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/* Set this to nsecs - since we've already planted the section
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VDATA (abfd)->nsecsyms = nsecs;
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VDATA (abfd)->ref_idx = 0;
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/* Check whether an existing file is a versados file. */
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static const bfd_target *
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versados_object_p (abfd)
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struct ext_vheader ext;
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tdata_type *tdata_save;
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
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if (bfd_bread (&len, (bfd_size_type) 1, abfd) != 1)
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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if (bfd_bread (&ext.type, (bfd_size_type) len, abfd) != len)
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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/* We guess that the language field will never be larger than 10.
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In sample files, it is always either 0 or 1. Checking for this
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prevents confusion with Intel Hex files. */
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if (ext.type != VHEADER
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bfd_set_error (bfd_error_wrong_format);
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/* OK, looks like a record, build the tdata and read in. */
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tdata_save = abfd->tdata.versados_data;
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if (!versados_mkobject (abfd) || !versados_scan (abfd))
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abfd->tdata.versados_data = tdata_save;
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versados_pass_2 (abfd)
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if (VDATA (abfd)->pass_2_done)
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
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VDATA (abfd)->es_done = ES_BASE;
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/* read records till we get to where we want to be */
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get_record (abfd, &any);
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switch (any.header.type)
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VDATA (abfd)->pass_2_done = 1;
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process_esd (abfd, &any.esd, 2);
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process_otr (abfd, &any.otr, 2);
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versados_get_section_contents (abfd, section, location, offset, count)
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if (!versados_pass_2 (abfd))
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EDATA (abfd, section->target_index).contents + offset,
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#define versados_get_section_contents_in_window \
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_bfd_generic_get_section_contents_in_window
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versados_set_section_contents (abfd, section, location, offset, bytes_to_do)
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bfd *abfd ATTRIBUTE_UNUSED;
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sec_ptr section ATTRIBUTE_UNUSED;
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PTR location ATTRIBUTE_UNUSED;
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file_ptr offset ATTRIBUTE_UNUSED;
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bfd_size_type bytes_to_do ATTRIBUTE_UNUSED;
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versados_sizeof_headers (abfd, exec)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd_boolean exec ATTRIBUTE_UNUSED;
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/* Return the amount of memory needed to read the symbol table. */
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versados_get_symtab_upper_bound (abfd)
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return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
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/* Return the symbol table. */
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versados_canonicalize_symtab (abfd, alocation)
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unsigned int symcount = bfd_get_symcount (abfd);
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versados_pass_2 (abfd);
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for (i = 0, s = VDATA (abfd)->symbols;
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versados_get_symbol_info (ignore_abfd, symbol, ret)
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bfd *ignore_abfd ATTRIBUTE_UNUSED;
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bfd_symbol_info (symbol, ret);
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versados_print_symbol (abfd, afile, symbol, how)
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bfd_print_symbol_type how;
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FILE *file = (FILE *) afile;
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case bfd_print_symbol_name:
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fprintf (file, "%s", symbol->name);
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bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
789
fprintf (file, " %-5s %s",
790
symbol->section->name,
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versados_get_reloc_upper_bound (abfd, asect)
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bfd *abfd ATTRIBUTE_UNUSED;
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return (asect->reloc_count + 1) * sizeof (arelent *);
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versados_canonicalize_reloc (abfd, section, relptr, symbols)
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versados_pass_2 (abfd);
815
src = section->relocation;
816
if (!EDATA (abfd, section->target_index).donerel)
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EDATA (abfd, section->target_index).donerel = 1;
819
/* translate from indexes to symptr ptrs */
820
for (count = 0; count < section->reloc_count; count++)
822
int esdid = (int) src[count].sym_ptr_ptr;
826
src[count].sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
828
else if (esdid < ES_BASE) /* Section relative thing */
830
struct esdid *e = &EDATA (abfd, esdid - 1);
833
/** relocation relative to section which was
836
src[count].sym_ptr_ptr = e->section->symbol_ptr_ptr;
840
src[count].sym_ptr_ptr = symbols + esdid - ES_BASE;
846
for (count = 0; count < section->reloc_count; count++)
851
return section->reloc_count;
854
#define versados_close_and_cleanup _bfd_generic_close_and_cleanup
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#define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
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#define versados_new_section_hook _bfd_generic_new_section_hook
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#define versados_bfd_is_local_label_name bfd_generic_is_local_label_name
859
#define versados_get_lineno _bfd_nosymbols_get_lineno
860
#define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
861
#define versados_make_empty_symbol _bfd_generic_make_empty_symbol
862
#define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
863
#define versados_read_minisymbols _bfd_generic_read_minisymbols
864
#define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
866
#define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
868
#define versados_set_arch_mach bfd_default_set_arch_mach
870
#define versados_bfd_get_relocated_section_contents \
871
bfd_generic_get_relocated_section_contents
872
#define versados_bfd_relax_section bfd_generic_relax_section
873
#define versados_bfd_gc_sections bfd_generic_gc_sections
874
#define versados_bfd_merge_sections bfd_generic_merge_sections
875
#define versados_bfd_discard_group bfd_generic_discard_group
876
#define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
877
#define versados_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
878
#define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
879
#define versados_bfd_link_just_syms _bfd_generic_link_just_syms
880
#define versados_bfd_final_link _bfd_generic_final_link
881
#define versados_bfd_link_split_section _bfd_generic_link_split_section
883
const bfd_target versados_vec =
885
"versados", /* name */
886
bfd_target_versados_flavour,
887
BFD_ENDIAN_BIG, /* target byte order */
888
BFD_ENDIAN_BIG, /* target headers byte order */
889
(HAS_RELOC | EXEC_P | /* object flags */
890
HAS_LINENO | HAS_DEBUG |
891
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
892
(SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
893
| SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
894
0, /* leading underscore */
895
' ', /* ar_pad_char */
896
16, /* ar_max_namelen */
897
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
898
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
899
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
900
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
901
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
902
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
906
versados_object_p, /* bfd_check_format */
913
_bfd_generic_mkarchive,
916
{ /* bfd_write_contents */
919
_bfd_write_archive_contents,
923
BFD_JUMP_TABLE_GENERIC (versados),
924
BFD_JUMP_TABLE_COPY (_bfd_generic),
925
BFD_JUMP_TABLE_CORE (_bfd_nocore),
926
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
927
BFD_JUMP_TABLE_SYMBOLS (versados),
928
BFD_JUMP_TABLE_RELOCS (versados),
929
BFD_JUMP_TABLE_WRITE (versados),
930
BFD_JUMP_TABLE_LINK (versados),
931
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),