| 1 | /* BFD back-end for VERSAdos-E objects.
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| 2 | Copyright 1995, 1996, 1998, 1999, 2000 Free Software Foundation, Inc.
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| 3 | Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
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| 4 |
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| 5 | Versados is a Motorola trademark.
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| 6 |
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| 7 | This file is part of BFD, the Binary File Descriptor library.
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| 8 |
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| 9 | This program is free software; you can redistribute it and/or modify
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| 10 | it under the terms of the GNU General Public License as published by
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| 11 | the Free Software Foundation; either version 2 of the License, or
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| 12 | (at your option) any later version.
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| 13 |
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| 14 | This program is distributed in the hope that it will be useful,
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| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | GNU General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License
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| 20 | along with this program; if not, write to the Free Software
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| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 22 |
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| 23 | /*
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| 24 | SUBSECTION
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| 25 | VERSAdos-E relocateable object file format
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| 26 |
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| 27 | DESCRIPTION
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| 28 |
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| 29 | This module supports reading of VERSAdos relocateable
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| 30 | object files.
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| 31 |
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| 32 | A VERSAdos file looks like contains
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| 33 |
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| 34 | o Indentification Record
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| 35 | o External Symbol Definition Record
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| 36 | o Object Text Recrod
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| 37 | o End Record
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| 38 |
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| 39 | */
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| 40 |
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| 41 | #include "bfd.h"
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| 42 | #include "sysdep.h"
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| 43 | #include "libbfd.h"
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| 44 | #include "libiberty.h"
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| 45 |
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| 46 | static boolean versados_mkobject PARAMS ((bfd *));
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| 47 | static boolean versados_scan PARAMS ((bfd *));
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| 48 | static const bfd_target *versados_object_p PARAMS ((bfd *));
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| 49 |
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| 50 | #define VHEADER '1'
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| 51 | #define VESTDEF '2'
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| 52 | #define VOTR '3'
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| 53 | #define VEND '4'
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| 54 |
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| 55 | #define ES_BASE 17 /* first symbol has esdid 17 */
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| 56 |
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| 57 | /* Per file target dependent information */
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| 58 |
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| 59 | /* one for each section */
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| 60 | struct esdid
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| 61 | {
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| 62 | asection *section; /* ptr to bfd version */
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| 63 | unsigned char *contents; /* used to build image */
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| 64 | int pc;
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| 65 | int relocs; /* reloc count, valid end of pass 1 */
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| 66 | int donerel; /* have relocs been translated */
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| 67 | };
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| 68 |
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| 69 | typedef struct versados_data_struct
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| 70 | {
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| 71 | int es_done; /* count of symbol index, starts at ES_BASE */
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| 72 | asymbol *symbols; /* pointer to local symbols */
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| 73 | char *strings; /* strings of all the above */
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| 74 | int stringlen; /* len of string table (valid end of pass1) */
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| 75 | int nsecsyms; /* number of sections */
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| 76 |
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| 77 | int ndefs; /* number of exported symbols (they dont get esdids) */
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| 78 | int nrefs; /* number of imported symbols (valid end of pass1) */
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| 79 |
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| 80 | int ref_idx; /* current processed value of the above */
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| 81 | int def_idx;
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| 82 |
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| 83 | int pass_2_done;
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| 84 |
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| 85 | struct esdid e[16]; /* per section info */
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| 86 | int alert; /* to see if we're trampling */
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| 87 | asymbol *rest[256 - 16]; /* per symbol info */
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| 88 |
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| 89 | }
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| 90 | tdata_type;
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| 91 |
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| 92 | #define VDATA(abfd) (abfd->tdata.versados_data)
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| 93 | #define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
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| 94 | #define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
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| 95 |
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| 96 | struct ext_otr
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| 97 | {
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| 98 | unsigned char size;
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| 99 | char type;
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| 100 | unsigned char map[4];
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| 101 | unsigned char esdid;
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| 102 | unsigned char data[200];
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| 103 | };
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| 104 |
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| 105 | struct ext_vheader
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| 106 | {
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| 107 | unsigned char size;
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| 108 | char type; /* record type */
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| 109 | char name[10]; /* module name */
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| 110 | char rev; /* module rev number */
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| 111 | char lang;
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| 112 | char vol[4];
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| 113 | char user[2];
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| 114 | char cat[8];
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| 115 | char fname[8];
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| 116 | char ext[2];
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| 117 | char time[3];
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| 118 | char date[3];
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| 119 | char rest[211];
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| 120 | };
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| 121 |
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| 122 | struct ext_esd
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| 123 | {
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| 124 | unsigned char size;
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| 125 | char type;
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| 126 | unsigned char esd_entries[1];
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| 127 | };
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| 128 | #define ESD_ABS 0
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| 129 | #define ESD_COMMON 1
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| 130 | #define ESD_STD_REL_SEC 2
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| 131 | #define ESD_SHRT_REL_SEC 3
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| 132 | #define ESD_XDEF_IN_SEC 4
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| 133 | #define ESD_XREF_SYM 7
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| 134 | #define ESD_XREF_SEC 6
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| 135 | #define ESD_XDEF_IN_ABS 5
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| 136 | union ext_any
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| 137 | {
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| 138 | unsigned char size;
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| 139 | struct ext_vheader header;
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| 140 | struct ext_esd esd;
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| 141 | struct ext_otr otr;
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| 142 | };
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| 143 |
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| 144 | /* Initialize by filling in the hex conversion array. */
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| 145 |
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| 146 | /* Set up the tdata information. */
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| 147 |
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| 148 | static boolean
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| 149 | versados_mkobject (abfd)
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| 150 | bfd *abfd;
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| 151 | {
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| 152 | if (abfd->tdata.versados_data == NULL)
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| 153 | {
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| 154 | tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
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| 155 | if (tdata == NULL)
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| 156 | return false;
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| 157 | abfd->tdata.versados_data = tdata;
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| 158 | tdata->symbols = NULL;
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| 159 | VDATA (abfd)->alert = 0x12345678;
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| 160 | }
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| 161 |
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| 162 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
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| 163 | return true;
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| 164 | }
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| 165 |
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| 166 | /* Report a problem in an S record file. FIXME: This probably should
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| 167 | not call fprintf, but we really do need some mechanism for printing
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| 168 | error messages. */
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| 169 |
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| 170 | static asymbol *
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| 171 | versados_new_symbol (abfd, snum, name, val, sec)
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| 172 | bfd *abfd;
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| 173 | int snum;
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| 174 | const char *name;
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| 175 | bfd_vma val;
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| 176 | asection *sec;
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| 177 | {
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| 178 | asymbol *n = VDATA (abfd)->symbols + snum;
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| 179 | n->name = name;
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| 180 | n->value = val;
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| 181 | n->section = sec;
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| 182 | n->the_bfd = abfd;
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| 183 | n->flags = 0;
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| 184 | return n;
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| 185 | }
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| 186 |
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| 187 | static int
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| 188 | get_record (abfd, ptr)
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| 189 | bfd *abfd;
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| 190 | union ext_any *ptr;
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| 191 | {
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| 192 | bfd_read (&ptr->size, 1, 1, abfd);
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| 193 | if (bfd_read ((char *) ptr + 1, 1, ptr->size, abfd) != ptr->size)
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| 194 | return 0;
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| 195 | return 1;
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| 196 | }
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| 197 |
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| 198 | int
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| 199 | get_4 (pp)
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| 200 | unsigned char **pp;
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| 201 | {
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| 202 | unsigned char *p = *pp;
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| 203 | *pp += 4;
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| 204 | return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
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| 205 | }
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| 206 |
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| 207 | void
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| 208 | get_10 (pp, name)
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| 209 | unsigned char **pp;
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| 210 | char *name;
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| 211 | {
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| 212 | char *p = (char *) *pp;
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| 213 | int len = 10;
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| 214 | *pp += len;
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| 215 | while (*p != ' '
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| 216 | && len)
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| 217 | {
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| 218 | *name++ = *p++;
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| 219 | len--;
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| 220 | }
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| 221 | *name = 0;
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| 222 | }
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| 223 |
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| 224 | static char *
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| 225 | new_symbol_string (abfd, name)
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| 226 | bfd *abfd;
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| 227 | char *name;
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| 228 | {
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| 229 | char *n = VDATA (abfd)->strings;
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| 230 | strcpy (VDATA (abfd)->strings, name);
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| 231 | VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
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| 232 | return n;
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| 233 | }
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| 234 |
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| 235 | static void
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| 236 | process_esd (abfd, esd, pass)
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| 237 | bfd *abfd;
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| 238 | struct ext_esd *esd;
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| 239 | int pass;
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| 240 | {
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| 241 | /* Read through the ext def for the est entries */
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| 242 | int togo = esd->size - 2;
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| 243 | bfd_vma size;
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| 244 | bfd_vma start;
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| 245 | asection *sec;
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| 246 | char name[11];
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| 247 | unsigned char *ptr = esd->esd_entries;
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| 248 | unsigned char *end = ptr + togo;
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| 249 | while (ptr < end)
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| 250 | {
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| 251 | int scn = *ptr & 0xf;
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| 252 | int typ = (*ptr >> 4) & 0xf;
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| 253 |
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| 254 | /* Declare this section */
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| 255 | sprintf (name, "%d", scn);
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| 256 | sec = bfd_make_section_old_way (abfd, strdup (name));
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| 257 | sec->target_index = scn;
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| 258 | EDATA (abfd, scn).section = sec;
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| 259 | ptr++;
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| 260 | switch (typ)
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| 261 | {
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| 262 | default:
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| 263 | abort ();
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| 264 | case ESD_XREF_SEC:
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| 265 | case ESD_XREF_SYM:
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| 266 | {
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| 267 | int snum = VDATA (abfd)->ref_idx++;
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| 268 | get_10 (&ptr, name);
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| 269 | if (pass == 1)
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| 270 | {
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| 271 | VDATA (abfd)->stringlen += strlen (name) + 1;
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| 272 | }
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| 273 | else
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| 274 | {
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| 275 | int esidx;
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| 276 | asymbol *s;
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| 277 | char *n = new_symbol_string (abfd, name);
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| 278 | s = versados_new_symbol (abfd, snum, n, 0,
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| 279 | &bfd_und_section, scn);
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| 280 | esidx = VDATA (abfd)->es_done++;
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| 281 | RDATA (abfd, esidx - ES_BASE) = s;
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| 282 | }
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| 283 | }
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| 284 | break;
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| 285 |
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| 286 | case ESD_ABS:
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| 287 | size = get_4 (&ptr);
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| 288 | start = get_4 (&ptr);
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| 289 | break;
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| 290 | case ESD_STD_REL_SEC:
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| 291 | case ESD_SHRT_REL_SEC:
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| 292 | {
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| 293 | sec->_raw_size = get_4 (&ptr);
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| 294 | sec->flags |= SEC_ALLOC;
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| 295 | }
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| 296 | break;
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| 297 | case ESD_XDEF_IN_ABS:
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| 298 | sec = (asection *) & bfd_abs_section;
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| 299 | case ESD_XDEF_IN_SEC:
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| 300 | {
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| 301 | int snum = VDATA (abfd)->def_idx++;
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| 302 | long val;
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| 303 | get_10 (&ptr, name);
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| 304 | val = get_4 (&ptr);
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| 305 | if (pass == 1)
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| 306 | {
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| 307 | /* Just remember the symbol */
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| 308 | VDATA (abfd)->stringlen += strlen (name) + 1;
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| 309 | }
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| 310 | else
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| 311 | {
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| 312 | asymbol *s;
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| 313 | char *n = new_symbol_string (abfd, name);
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| 314 | s = versados_new_symbol (abfd, snum + VDATA (abfd)->nrefs, n, val, sec, scn);
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| 315 | s->flags |= BSF_GLOBAL;
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| 316 | }
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| 317 | }
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| 318 | break;
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| 319 | }
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| 320 | }
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| 321 | }
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| 322 |
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| 323 | #define R_RELWORD 1
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| 324 | #define R_RELLONG 2
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| 325 | #define R_RELWORD_NEG 3
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| 326 | #define R_RELLONG_NEG 4
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| 327 |
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| 328 | reloc_howto_type versados_howto_table[] =
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| 329 | {
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| 330 | HOWTO (R_RELWORD, 0, 1, 16, false,
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| 331 | 0, complain_overflow_dont, 0,
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| 332 | "+v16", true, 0x0000ffff, 0x0000ffff, false),
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| 333 | HOWTO (R_RELLONG, 0, 2, 32, false,
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| 334 | 0, complain_overflow_dont, 0,
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| 335 | "+v32", true, 0xffffffff, 0xffffffff, false),
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| 336 |
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| 337 | HOWTO (R_RELWORD_NEG, 0, -1, 16, false,
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| 338 | 0, complain_overflow_dont, 0,
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| 339 | "-v16", true, 0x0000ffff, 0x0000ffff, false),
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| 340 | HOWTO (R_RELLONG_NEG, 0, -2, 32, false,
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| 341 | 0, complain_overflow_dont, 0,
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| 342 | "-v32", true, 0xffffffff, 0xffffffff, false),
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| 343 | };
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| 344 |
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| 345 | static int
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| 346 | get_offset (len, ptr)
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| 347 | int len;
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| 348 | unsigned char *ptr;
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| 349 | {
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| 350 | int val = 0;
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| 351 | if (len)
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| 352 | {
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| 353 | int i;
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| 354 | val = *ptr++;
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| 355 | if (val & 0x80)
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| 356 | val |= ~0xff;
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| 357 | for (i = 1; i < len; i++)
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| 358 | val = (val << 8) | *ptr++;
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| 359 | }
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| 360 |
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| 361 | return val;
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| 362 | }
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| 363 |
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| 364 | static void
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| 365 | process_otr (abfd, otr, pass)
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| 366 | bfd *abfd;
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| 367 | struct ext_otr *otr;
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| 368 | int pass;
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| 369 | {
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| 370 | unsigned long shift;
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| 371 | unsigned char *srcp = otr->data;
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| 372 | unsigned char *endp = (unsigned char *) otr + otr->size;
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| 373 | unsigned int bits = (otr->map[0] << 24)
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| 374 | | (otr->map[1] << 16)
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| 375 | | (otr->map[2] << 8)
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| 376 | | (otr->map[3] << 0);
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| 377 |
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| 378 | struct esdid *esdid = &EDATA (abfd, otr->esdid - 1);
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| 379 | unsigned char *contents = esdid->contents;
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| 380 | int need_contents = 0;
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| 381 | unsigned int dst_idx = esdid->pc;
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| 382 |
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| 383 | for (shift = (1 << 31); shift && srcp < endp; shift >>= 1)
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| 384 | {
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| 385 | if (bits & shift)
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| 386 | {
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| 387 | int flag = *srcp++;
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| 388 | int esdids = (flag >> 5) & 0x7;
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| 389 | int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
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| 390 | int offsetlen = flag & 0x7;
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| 391 | int j;
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| 392 |
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| 393 | if (esdids == 0)
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| 394 | {
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| 395 | /* A zero esdid means the new pc is the offset given */
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| 396 | dst_idx += get_offset (offsetlen, srcp);
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| 397 | srcp += offsetlen;
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| 398 | }
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| 399 | else
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| 400 | {
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| 401 | int val = get_offset (offsetlen, srcp + esdids);
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| 402 | if (pass == 1)
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| 403 | need_contents = 1;
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| 404 | else
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| 405 | for (j = 0; j < sizeinwords * 2; j++)
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| 406 | {
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| 407 | contents[dst_idx + (sizeinwords * 2) - j - 1] = val;
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| 408 | val >>= 8;
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| 409 | }
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| 410 |
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| 411 | for (j = 0; j < esdids; j++)
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| 412 | {
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| 413 | int esdid = *srcp++;
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| 414 |
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| 415 | if (esdid)
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| 416 | {
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| 417 | int rn = EDATA (abfd, otr->esdid - 1).relocs++;
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| 418 | if (pass == 1)
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| 419 | {
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| 420 | /* this is the first pass over the data,
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| 421 | just remember that we need a reloc */
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| 422 | }
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| 423 | else
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| 424 | {
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| 425 | arelent *n =
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| 426 | EDATA (abfd, otr->esdid - 1).section->relocation + rn;
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| 427 | n->address = dst_idx;
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| 428 |
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| 429 | n->sym_ptr_ptr = (asymbol **) esdid;
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| 430 | n->addend = 0;
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| 431 | n->howto = versados_howto_table + ((j & 1) * 2) + (sizeinwords - 1);
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| 432 | }
|
|---|
| 433 | }
|
|---|
| 434 | }
|
|---|
| 435 | srcp += offsetlen;
|
|---|
| 436 | dst_idx += sizeinwords * 2;
|
|---|
| 437 | }
|
|---|
| 438 | }
|
|---|
| 439 | else
|
|---|
| 440 | {
|
|---|
| 441 | need_contents = 1;
|
|---|
| 442 | if (dst_idx < esdid->section->_raw_size)
|
|---|
| 443 | if (pass == 2)
|
|---|
| 444 | {
|
|---|
| 445 | /* absolute code, comes in 16 bit lumps */
|
|---|
| 446 | contents[dst_idx] = srcp[0];
|
|---|
| 447 | contents[dst_idx + 1] = srcp[1];
|
|---|
| 448 | }
|
|---|
| 449 | dst_idx += 2;
|
|---|
| 450 | srcp += 2;
|
|---|
| 451 | }
|
|---|
| 452 | }
|
|---|
| 453 | EDATA (abfd, otr->esdid - 1).pc = dst_idx;
|
|---|
| 454 |
|
|---|
| 455 | if (!contents && need_contents)
|
|---|
| 456 | esdid->contents = (unsigned char *) bfd_alloc (abfd, esdid->section->_raw_size);
|
|---|
| 457 |
|
|---|
| 458 | }
|
|---|
| 459 |
|
|---|
| 460 | static boolean
|
|---|
| 461 | versados_scan (abfd)
|
|---|
| 462 | bfd *abfd;
|
|---|
| 463 | {
|
|---|
| 464 | int loop = 1;
|
|---|
| 465 | int i;
|
|---|
| 466 | int j;
|
|---|
| 467 | int nsecs = 0;
|
|---|
| 468 |
|
|---|
| 469 | VDATA (abfd)->stringlen = 0;
|
|---|
| 470 | VDATA (abfd)->nrefs = 0;
|
|---|
| 471 | VDATA (abfd)->ndefs = 0;
|
|---|
| 472 | VDATA (abfd)->ref_idx = 0;
|
|---|
| 473 | VDATA (abfd)->def_idx = 0;
|
|---|
| 474 | VDATA (abfd)->pass_2_done = 0;
|
|---|
| 475 |
|
|---|
| 476 | while (loop)
|
|---|
| 477 | {
|
|---|
| 478 | union ext_any any;
|
|---|
| 479 | if (!get_record (abfd, &any))
|
|---|
| 480 | return true;
|
|---|
| 481 | switch (any.header.type)
|
|---|
| 482 | {
|
|---|
| 483 | case VHEADER:
|
|---|
| 484 | break;
|
|---|
| 485 | case VEND:
|
|---|
| 486 | loop = 0;
|
|---|
| 487 | break;
|
|---|
| 488 | case VESTDEF:
|
|---|
| 489 | process_esd (abfd, &any.esd, 1);
|
|---|
| 490 | break;
|
|---|
| 491 | case VOTR:
|
|---|
| 492 | process_otr (abfd, &any.otr, 1);
|
|---|
| 493 | break;
|
|---|
| 494 | }
|
|---|
| 495 | }
|
|---|
| 496 |
|
|---|
| 497 | /* Now allocate space for the relocs and sections */
|
|---|
| 498 |
|
|---|
| 499 | VDATA (abfd)->nrefs = VDATA (abfd)->ref_idx;
|
|---|
| 500 | VDATA (abfd)->ndefs = VDATA (abfd)->def_idx;
|
|---|
| 501 | VDATA (abfd)->ref_idx = 0;
|
|---|
| 502 | VDATA (abfd)->def_idx = 0;
|
|---|
| 503 |
|
|---|
| 504 | abfd->symcount = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs;
|
|---|
| 505 |
|
|---|
| 506 | for (i = 0; i < 16; i++)
|
|---|
| 507 | {
|
|---|
| 508 | struct esdid *esdid = &EDATA (abfd, i);
|
|---|
| 509 | if (esdid->section)
|
|---|
| 510 | {
|
|---|
| 511 | esdid->section->relocation
|
|---|
| 512 | = (arelent *) bfd_alloc (abfd, sizeof (arelent) * esdid->relocs);
|
|---|
| 513 |
|
|---|
| 514 | esdid->pc = 0;
|
|---|
| 515 |
|
|---|
| 516 | if (esdid->contents)
|
|---|
| 517 | esdid->section->flags |= SEC_HAS_CONTENTS | SEC_LOAD;
|
|---|
| 518 |
|
|---|
| 519 | esdid->section->reloc_count = esdid->relocs;
|
|---|
| 520 | if (esdid->relocs)
|
|---|
| 521 | esdid->section->flags |= SEC_RELOC;
|
|---|
| 522 |
|
|---|
| 523 | esdid->relocs = 0;
|
|---|
| 524 |
|
|---|
| 525 | /* Add an entry into the symbol table for it */
|
|---|
| 526 | nsecs++;
|
|---|
| 527 | VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
|
|---|
| 528 | }
|
|---|
| 529 | }
|
|---|
| 530 |
|
|---|
| 531 | abfd->symcount += nsecs;
|
|---|
| 532 |
|
|---|
| 533 | VDATA (abfd)->symbols = (asymbol *) bfd_alloc (abfd,
|
|---|
| 534 | sizeof (asymbol) * (abfd->symcount));
|
|---|
| 535 |
|
|---|
| 536 | VDATA (abfd)->strings = bfd_alloc (abfd, VDATA (abfd)->stringlen);
|
|---|
| 537 |
|
|---|
| 538 | if ((VDATA (abfd)->symbols == NULL && abfd->symcount > 0)
|
|---|
| 539 | || (VDATA (abfd)->strings == NULL && VDATA (abfd)->stringlen > 0))
|
|---|
| 540 | return false;
|
|---|
| 541 |
|
|---|
| 542 | /* Actually fill in the section symbols,
|
|---|
| 543 | we stick them at the end of the table */
|
|---|
| 544 |
|
|---|
| 545 | for (j = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs, i = 0; i < 16; i++)
|
|---|
| 546 | {
|
|---|
| 547 | struct esdid *esdid = &EDATA (abfd, i);
|
|---|
| 548 | asection *sec = esdid->section;
|
|---|
| 549 | if (sec)
|
|---|
| 550 | {
|
|---|
| 551 | asymbol *s = VDATA (abfd)->symbols + j;
|
|---|
| 552 | s->name = new_symbol_string (abfd, sec->name);
|
|---|
| 553 | s->section = sec;
|
|---|
| 554 | s->flags = BSF_LOCAL;
|
|---|
| 555 | s->value = 0;
|
|---|
| 556 | s->the_bfd = abfd;
|
|---|
| 557 | j++;
|
|---|
| 558 | }
|
|---|
| 559 | }
|
|---|
| 560 | if (abfd->symcount)
|
|---|
| 561 | abfd->flags |= HAS_SYMS;
|
|---|
| 562 |
|
|---|
| 563 | /* Set this to nsecs - since we've already planted the section
|
|---|
| 564 | symbols */
|
|---|
| 565 | VDATA (abfd)->nsecsyms = nsecs;
|
|---|
| 566 |
|
|---|
| 567 | VDATA (abfd)->ref_idx = 0;
|
|---|
| 568 |
|
|---|
| 569 | return 1;
|
|---|
| 570 | }
|
|---|
| 571 |
|
|---|
| 572 | /* Check whether an existing file is a versados file. */
|
|---|
| 573 |
|
|---|
| 574 | static const bfd_target *
|
|---|
| 575 | versados_object_p (abfd)
|
|---|
| 576 | bfd *abfd;
|
|---|
| 577 | {
|
|---|
| 578 | struct ext_vheader ext;
|
|---|
| 579 | unsigned char len;
|
|---|
| 580 |
|
|---|
| 581 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
|
|---|
| 582 | return NULL;
|
|---|
| 583 |
|
|---|
| 584 | if (bfd_read (&len, 1, 1, abfd) != 1)
|
|---|
| 585 | {
|
|---|
| 586 | if (bfd_get_error () != bfd_error_system_call)
|
|---|
| 587 | bfd_set_error (bfd_error_wrong_format);
|
|---|
| 588 | return NULL;
|
|---|
| 589 | }
|
|---|
| 590 |
|
|---|
| 591 | if (bfd_read (&ext.type, 1, len, abfd) != len)
|
|---|
| 592 | {
|
|---|
| 593 | if (bfd_get_error () != bfd_error_system_call)
|
|---|
| 594 | bfd_set_error (bfd_error_wrong_format);
|
|---|
| 595 | return NULL;
|
|---|
| 596 | }
|
|---|
| 597 |
|
|---|
| 598 | /* We guess that the language field will never be larger than 10.
|
|---|
| 599 | In sample files, it is always either 0 or 1. Checking for this
|
|---|
| 600 | prevents confusion with Intel Hex files. */
|
|---|
| 601 | if (ext.type != VHEADER
|
|---|
| 602 | || ext.lang > 10)
|
|---|
| 603 | {
|
|---|
| 604 | bfd_set_error (bfd_error_wrong_format);
|
|---|
| 605 | return NULL;
|
|---|
| 606 | }
|
|---|
| 607 |
|
|---|
| 608 | /* OK, looks like a record, build the tdata and read in. */
|
|---|
| 609 |
|
|---|
| 610 | if (!versados_mkobject (abfd)
|
|---|
| 611 | || !versados_scan (abfd))
|
|---|
| 612 | return NULL;
|
|---|
| 613 |
|
|---|
| 614 | return abfd->xvec;
|
|---|
| 615 | }
|
|---|
| 616 |
|
|---|
| 617 | static boolean
|
|---|
| 618 | versados_pass_2 (abfd)
|
|---|
| 619 | bfd *abfd;
|
|---|
| 620 | {
|
|---|
| 621 | union ext_any any;
|
|---|
| 622 |
|
|---|
| 623 | if (VDATA (abfd)->pass_2_done)
|
|---|
| 624 | return 1;
|
|---|
| 625 |
|
|---|
| 626 | if (bfd_seek (abfd, 0, SEEK_SET) != 0)
|
|---|
| 627 | return 0;
|
|---|
| 628 |
|
|---|
| 629 | VDATA (abfd)->es_done = ES_BASE;
|
|---|
| 630 |
|
|---|
| 631 | /* read records till we get to where we want to be */
|
|---|
| 632 |
|
|---|
| 633 | while (1)
|
|---|
| 634 | {
|
|---|
| 635 | get_record (abfd, &any);
|
|---|
| 636 | switch (any.header.type)
|
|---|
| 637 | {
|
|---|
| 638 | case VEND:
|
|---|
| 639 | VDATA (abfd)->pass_2_done = 1;
|
|---|
| 640 | return 1;
|
|---|
| 641 | case VESTDEF:
|
|---|
| 642 | process_esd (abfd, &any.esd, 2);
|
|---|
| 643 | break;
|
|---|
| 644 | case VOTR:
|
|---|
| 645 | process_otr (abfd, &any.otr, 2);
|
|---|
| 646 | break;
|
|---|
| 647 | }
|
|---|
| 648 | }
|
|---|
| 649 | }
|
|---|
| 650 |
|
|---|
| 651 | static boolean
|
|---|
| 652 | versados_get_section_contents (abfd, section, location, offset, count)
|
|---|
| 653 | bfd *abfd;
|
|---|
| 654 | asection *section;
|
|---|
| 655 | PTR location;
|
|---|
| 656 | file_ptr offset;
|
|---|
| 657 | bfd_size_type count;
|
|---|
| 658 | {
|
|---|
| 659 | if (!versados_pass_2 (abfd))
|
|---|
| 660 | return false;
|
|---|
| 661 |
|
|---|
| 662 | memcpy (location,
|
|---|
| 663 | EDATA (abfd, section->target_index).contents + offset,
|
|---|
| 664 | (size_t) count);
|
|---|
| 665 |
|
|---|
| 666 | return true;
|
|---|
| 667 | }
|
|---|
| 668 |
|
|---|
| 669 | #define versados_get_section_contents_in_window \
|
|---|
| 670 | _bfd_generic_get_section_contents_in_window
|
|---|
| 671 |
|
|---|
| 672 | static boolean
|
|---|
| 673 | versados_set_section_contents (abfd, section, location, offset, bytes_to_do)
|
|---|
| 674 | bfd *abfd ATTRIBUTE_UNUSED;
|
|---|
| 675 | sec_ptr section ATTRIBUTE_UNUSED;
|
|---|
| 676 | PTR location ATTRIBUTE_UNUSED;
|
|---|
| 677 | file_ptr offset ATTRIBUTE_UNUSED;
|
|---|
| 678 | bfd_size_type bytes_to_do ATTRIBUTE_UNUSED;
|
|---|
| 679 | {
|
|---|
| 680 | return false;
|
|---|
| 681 | }
|
|---|
| 682 |
|
|---|
| 683 | static int
|
|---|
| 684 | versados_sizeof_headers (abfd, exec)
|
|---|
| 685 | bfd *abfd ATTRIBUTE_UNUSED;
|
|---|
| 686 | boolean exec ATTRIBUTE_UNUSED;
|
|---|
| 687 | {
|
|---|
| 688 | return 0;
|
|---|
| 689 | }
|
|---|
| 690 |
|
|---|
| 691 | static asymbol *
|
|---|
| 692 | versados_make_empty_symbol (abfd)
|
|---|
| 693 | bfd *abfd;
|
|---|
| 694 | {
|
|---|
| 695 | asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
|
|---|
| 696 | if (new)
|
|---|
| 697 | new->the_bfd = abfd;
|
|---|
| 698 | return new;
|
|---|
| 699 | }
|
|---|
| 700 |
|
|---|
| 701 | /* Return the amount of memory needed to read the symbol table. */
|
|---|
| 702 |
|
|---|
| 703 | static long
|
|---|
| 704 | versados_get_symtab_upper_bound (abfd)
|
|---|
| 705 | bfd *abfd;
|
|---|
| 706 | {
|
|---|
| 707 | return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
|
|---|
| 708 | }
|
|---|
| 709 |
|
|---|
| 710 | /* Return the symbol table. */
|
|---|
| 711 |
|
|---|
| 712 | static long
|
|---|
| 713 | versados_get_symtab (abfd, alocation)
|
|---|
| 714 | bfd *abfd;
|
|---|
| 715 | asymbol **alocation;
|
|---|
| 716 | {
|
|---|
| 717 | unsigned int symcount = bfd_get_symcount (abfd);
|
|---|
| 718 | unsigned int i;
|
|---|
| 719 | asymbol *s;
|
|---|
| 720 |
|
|---|
| 721 | versados_pass_2 (abfd);
|
|---|
| 722 |
|
|---|
| 723 | for (i = 0, s = VDATA (abfd)->symbols;
|
|---|
| 724 | i < symcount;
|
|---|
| 725 | s++, i++)
|
|---|
| 726 | {
|
|---|
| 727 | *alocation++ = s;
|
|---|
| 728 | }
|
|---|
| 729 |
|
|---|
| 730 | *alocation = NULL;
|
|---|
| 731 |
|
|---|
| 732 | return symcount;
|
|---|
| 733 | }
|
|---|
| 734 |
|
|---|
| 735 | void
|
|---|
| 736 | versados_get_symbol_info (ignore_abfd, symbol, ret)
|
|---|
| 737 | bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
|---|
| 738 | asymbol *symbol;
|
|---|
| 739 | symbol_info *ret;
|
|---|
| 740 | {
|
|---|
| 741 | bfd_symbol_info (symbol, ret);
|
|---|
| 742 | }
|
|---|
| 743 |
|
|---|
| 744 | void
|
|---|
| 745 | versados_print_symbol (ignore_abfd, afile, symbol, how)
|
|---|
| 746 | bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
|---|
| 747 | PTR afile;
|
|---|
| 748 | asymbol *symbol;
|
|---|
| 749 | bfd_print_symbol_type how;
|
|---|
| 750 | {
|
|---|
| 751 | FILE *file = (FILE *) afile;
|
|---|
| 752 | switch (how)
|
|---|
| 753 | {
|
|---|
| 754 | case bfd_print_symbol_name:
|
|---|
| 755 | fprintf (file, "%s", symbol->name);
|
|---|
| 756 | break;
|
|---|
| 757 | default:
|
|---|
| 758 | bfd_print_symbol_vandf ((PTR) file, symbol);
|
|---|
| 759 | fprintf (file, " %-5s %s",
|
|---|
| 760 | symbol->section->name,
|
|---|
| 761 | symbol->name);
|
|---|
| 762 |
|
|---|
| 763 | }
|
|---|
| 764 | }
|
|---|
| 765 |
|
|---|
| 766 | long
|
|---|
| 767 | versados_get_reloc_upper_bound (abfd, asect)
|
|---|
| 768 | bfd *abfd ATTRIBUTE_UNUSED;
|
|---|
| 769 | sec_ptr asect;
|
|---|
| 770 | {
|
|---|
| 771 | return (asect->reloc_count + 1) * sizeof (arelent *);
|
|---|
| 772 | }
|
|---|
| 773 |
|
|---|
| 774 | long
|
|---|
| 775 | versados_canonicalize_reloc (abfd, section, relptr, symbols)
|
|---|
| 776 | bfd *abfd;
|
|---|
| 777 | sec_ptr section;
|
|---|
| 778 | arelent **relptr;
|
|---|
| 779 | asymbol **symbols;
|
|---|
| 780 | {
|
|---|
| 781 | unsigned int count;
|
|---|
| 782 | arelent *src;
|
|---|
| 783 |
|
|---|
| 784 | versados_pass_2 (abfd);
|
|---|
| 785 | src = section->relocation;
|
|---|
| 786 | if (!EDATA (abfd, section->target_index).donerel)
|
|---|
| 787 | {
|
|---|
| 788 | EDATA (abfd, section->target_index).donerel = 1;
|
|---|
| 789 | /* translate from indexes to symptr ptrs */
|
|---|
| 790 | for (count = 0; count < section->reloc_count; count++)
|
|---|
| 791 | {
|
|---|
| 792 | int esdid = (int) src[count].sym_ptr_ptr;
|
|---|
| 793 |
|
|---|
| 794 | if (esdid == 0)
|
|---|
| 795 | {
|
|---|
| 796 | src[count].sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
|
|---|
| 797 | }
|
|---|
| 798 | else if (esdid < ES_BASE) /* Section relative thing */
|
|---|
| 799 | {
|
|---|
| 800 | struct esdid *e = &EDATA (abfd, esdid - 1);
|
|---|
| 801 | if (!section)
|
|---|
| 802 | {
|
|---|
| 803 | /** relocation relative to section which was
|
|---|
| 804 | never declared ! */
|
|---|
| 805 | }
|
|---|
| 806 | src[count].sym_ptr_ptr = e->section->symbol_ptr_ptr;
|
|---|
| 807 | }
|
|---|
| 808 | else
|
|---|
| 809 | {
|
|---|
| 810 | src[count].sym_ptr_ptr = symbols + esdid - ES_BASE;
|
|---|
| 811 | }
|
|---|
| 812 |
|
|---|
| 813 | }
|
|---|
| 814 | }
|
|---|
| 815 |
|
|---|
| 816 | for (count = 0; count < section->reloc_count; count++)
|
|---|
| 817 | {
|
|---|
| 818 | *relptr++ = src++;
|
|---|
| 819 | }
|
|---|
| 820 | *relptr = 0;
|
|---|
| 821 | return section->reloc_count;
|
|---|
| 822 | }
|
|---|
| 823 |
|
|---|
| 824 | #define versados_close_and_cleanup _bfd_generic_close_and_cleanup
|
|---|
| 825 | #define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
|
|---|
| 826 | #define versados_new_section_hook _bfd_generic_new_section_hook
|
|---|
| 827 |
|
|---|
| 828 | #define versados_bfd_is_local_label_name bfd_generic_is_local_label_name
|
|---|
| 829 | #define versados_get_lineno _bfd_nosymbols_get_lineno
|
|---|
| 830 | #define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
|
|---|
| 831 | #define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
|
|---|
| 832 | #define versados_read_minisymbols _bfd_generic_read_minisymbols
|
|---|
| 833 | #define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
|
|---|
| 834 |
|
|---|
| 835 | #define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
|
|---|
| 836 |
|
|---|
| 837 | #define versados_set_arch_mach bfd_default_set_arch_mach
|
|---|
| 838 |
|
|---|
| 839 | #define versados_bfd_get_relocated_section_contents \
|
|---|
| 840 | bfd_generic_get_relocated_section_contents
|
|---|
| 841 | #define versados_bfd_relax_section bfd_generic_relax_section
|
|---|
| 842 | #define versados_bfd_gc_sections bfd_generic_gc_sections
|
|---|
| 843 | #define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
|
|---|
| 844 | #define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
|
|---|
| 845 | #define versados_bfd_final_link _bfd_generic_final_link
|
|---|
| 846 | #define versados_bfd_link_split_section _bfd_generic_link_split_section
|
|---|
| 847 |
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| 848 | const bfd_target versados_vec =
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| 849 | {
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| 850 | "versados", /* name */
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| 851 | bfd_target_versados_flavour,
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| 852 | BFD_ENDIAN_BIG, /* target byte order */
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| 853 | BFD_ENDIAN_BIG, /* target headers byte order */
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| 854 | (HAS_RELOC | EXEC_P | /* object flags */
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| 855 | HAS_LINENO | HAS_DEBUG |
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| 856 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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| 857 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
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| 858 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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| 859 | 0, /* leading underscore */
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| 860 | ' ', /* ar_pad_char */
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| 861 | 16, /* ar_max_namelen */
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| 862 | bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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| 863 | bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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| 864 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
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| 865 | bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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| 866 | bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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| 867 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
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| 868 |
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| 869 | {
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| 870 | _bfd_dummy_target,
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| 871 | versados_object_p, /* bfd_check_format */
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| 872 | _bfd_dummy_target,
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| 873 | _bfd_dummy_target,
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| 874 | },
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| 875 | {
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| 876 | bfd_false,
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| 877 | versados_mkobject,
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| 878 | _bfd_generic_mkarchive,
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| 879 | bfd_false,
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| 880 | },
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| 881 | { /* bfd_write_contents */
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| 882 | bfd_false,
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| 883 | bfd_false,
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| 884 | _bfd_write_archive_contents,
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| 885 | bfd_false,
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| 886 | },
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| 887 |
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| 888 | BFD_JUMP_TABLE_GENERIC (versados),
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| 889 | BFD_JUMP_TABLE_COPY (_bfd_generic),
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| 890 | BFD_JUMP_TABLE_CORE (_bfd_nocore),
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| 891 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
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| 892 | BFD_JUMP_TABLE_SYMBOLS (versados),
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| 893 | BFD_JUMP_TABLE_RELOCS (versados),
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| 894 | BFD_JUMP_TABLE_WRITE (versados),
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| 895 | BFD_JUMP_TABLE_LINK (versados),
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| 896 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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| 897 |
|
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| 898 | NULL,
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| 899 |
|
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| 900 | (PTR) 0
|
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| 901 | };
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