| 1 | /* BFD back-end for os9000 i386 binaries.
|
|---|
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999
|
|---|
| 3 | Free Software Foundation, Inc.
|
|---|
| 4 | Written by Cygnus Support.
|
|---|
| 5 |
|
|---|
| 6 | This file is part of BFD, the Binary File Descriptor library.
|
|---|
| 7 |
|
|---|
| 8 | This program is free software; you can redistribute it and/or modify
|
|---|
| 9 | it under the terms of the GNU General Public License as published by
|
|---|
| 10 | the Free Software Foundation; either version 2 of the License, or
|
|---|
| 11 | (at your option) any later version.
|
|---|
| 12 |
|
|---|
| 13 | This program is distributed in the hope that it will be useful,
|
|---|
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 16 | GNU General Public License for more details.
|
|---|
| 17 |
|
|---|
| 18 | You should have received a copy of the GNU General Public License
|
|---|
| 19 | along with this program; if not, write to the Free Software
|
|---|
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|---|
| 21 |
|
|---|
| 22 |
|
|---|
| 23 | #include "bfd.h"
|
|---|
| 24 | #include "sysdep.h"
|
|---|
| 25 | #include "libbfd.h"
|
|---|
| 26 | #include "bfdlink.h"
|
|---|
| 27 | #include "libaout.h" /* BFD a.out internal data structures */
|
|---|
| 28 | #include "os9k.h"
|
|---|
| 29 |
|
|---|
| 30 | static const bfd_target *os9k_callback PARAMS ((bfd *));
|
|---|
| 31 |
|
|---|
| 32 | /* Swaps the information in an executable header taken from a raw byte
|
|---|
| 33 | stream memory image, into the internal exec_header structure. */
|
|---|
| 34 | boolean
|
|---|
| 35 | os9k_swap_exec_header_in (abfd, raw_bytes, execp)
|
|---|
| 36 | bfd *abfd;
|
|---|
| 37 | mh_com *raw_bytes;
|
|---|
| 38 | struct internal_exec *execp;
|
|---|
| 39 | {
|
|---|
| 40 | mh_com *bytes = (mh_com *) raw_bytes;
|
|---|
| 41 | unsigned int dload, dmemsize, dmemstart;
|
|---|
| 42 |
|
|---|
| 43 | /* Now fill in fields in the execp, from the bytes in the raw data. */
|
|---|
| 44 | execp->a_info = bfd_h_get_16 (abfd, bytes->m_sync);
|
|---|
| 45 | execp->a_syms = 0;
|
|---|
| 46 | execp->a_entry = bfd_h_get_32 (abfd, bytes->m_exec);
|
|---|
| 47 | execp->a_talign = 2;
|
|---|
| 48 | execp->a_dalign = 2;
|
|---|
| 49 | execp->a_balign = 2;
|
|---|
| 50 |
|
|---|
| 51 | dload = bfd_h_get_32 (abfd, bytes->m_idata);
|
|---|
| 52 | execp->a_data = dload + 8;
|
|---|
| 53 |
|
|---|
| 54 | if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0
|
|---|
| 55 | || (bfd_read (&dmemstart, sizeof (dmemstart), 1, abfd)
|
|---|
| 56 | != sizeof (dmemstart))
|
|---|
| 57 | || (bfd_read (&dmemsize, sizeof (dmemsize), 1, abfd)
|
|---|
| 58 | != sizeof (dmemsize)))
|
|---|
| 59 | return false;
|
|---|
| 60 |
|
|---|
| 61 | execp->a_tload = 0;
|
|---|
| 62 | execp->a_dload = bfd_h_get_32 (abfd, (unsigned char *) &dmemstart);
|
|---|
| 63 | execp->a_text = dload - execp->a_tload;
|
|---|
| 64 | execp->a_data = bfd_h_get_32 (abfd, (unsigned char *) &dmemsize);
|
|---|
| 65 | execp->a_bss = bfd_h_get_32 (abfd, bytes->m_data) - execp->a_data;
|
|---|
| 66 |
|
|---|
| 67 | execp->a_trsize = 0;
|
|---|
| 68 | execp->a_drsize = 0;
|
|---|
| 69 |
|
|---|
| 70 | return true;
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 | #if 0
|
|---|
| 74 | /* Swaps the information in an internal exec header structure into the
|
|---|
| 75 | supplied buffer ready for writing to disk. */
|
|---|
| 76 |
|
|---|
| 77 | PROTO (void, os9k_swap_exec_header_out,
|
|---|
| 78 | (bfd * abfd,
|
|---|
| 79 | struct internal_exec * execp,
|
|---|
| 80 | struct mh_com * raw_bytes));
|
|---|
| 81 | void
|
|---|
| 82 | os9k_swap_exec_header_out (abfd, execp, raw_bytes)
|
|---|
| 83 | bfd *abfd;
|
|---|
| 84 | struct internal_exec *execp;
|
|---|
| 85 | mh_com *raw_bytes;
|
|---|
| 86 | {
|
|---|
| 87 | mh_com *bytes = (mh_com *) raw_bytes;
|
|---|
| 88 |
|
|---|
| 89 | /* Now fill in fields in the raw data, from the fields in the exec struct. */
|
|---|
| 90 | bfd_h_put_32 (abfd, execp->a_info, bytes->e_info);
|
|---|
| 91 | bfd_h_put_32 (abfd, execp->a_text, bytes->e_text);
|
|---|
| 92 | bfd_h_put_32 (abfd, execp->a_data, bytes->e_data);
|
|---|
| 93 | bfd_h_put_32 (abfd, execp->a_bss, bytes->e_bss);
|
|---|
| 94 | bfd_h_put_32 (abfd, execp->a_syms, bytes->e_syms);
|
|---|
| 95 | bfd_h_put_32 (abfd, execp->a_entry, bytes->e_entry);
|
|---|
| 96 | bfd_h_put_32 (abfd, execp->a_trsize, bytes->e_trsize);
|
|---|
| 97 | bfd_h_put_32 (abfd, execp->a_drsize, bytes->e_drsize);
|
|---|
| 98 | bfd_h_put_32 (abfd, execp->a_tload, bytes->e_tload);
|
|---|
| 99 | bfd_h_put_32 (abfd, execp->a_dload, bytes->e_dload);
|
|---|
| 100 | bytes->e_talign[0] = execp->a_talign;
|
|---|
| 101 | bytes->e_dalign[0] = execp->a_dalign;
|
|---|
| 102 | bytes->e_balign[0] = execp->a_balign;
|
|---|
| 103 | bytes->e_relaxable[0] = execp->a_relaxable;
|
|---|
| 104 | }
|
|---|
| 105 |
|
|---|
| 106 | #endif /* 0 */
|
|---|
| 107 |
|
|---|
| 108 | static const bfd_target *
|
|---|
| 109 | os9k_object_p (abfd)
|
|---|
| 110 | bfd *abfd;
|
|---|
| 111 | {
|
|---|
| 112 | struct internal_exec anexec;
|
|---|
| 113 | mh_com exec_bytes;
|
|---|
| 114 |
|
|---|
| 115 | if (bfd_read ((PTR) & exec_bytes, MHCOM_BYTES_SIZE, 1, abfd)
|
|---|
| 116 | != MHCOM_BYTES_SIZE)
|
|---|
| 117 | {
|
|---|
| 118 | if (bfd_get_error () != bfd_error_system_call)
|
|---|
| 119 | bfd_set_error (bfd_error_wrong_format);
|
|---|
| 120 | return 0;
|
|---|
| 121 | }
|
|---|
| 122 |
|
|---|
| 123 | anexec.a_info = bfd_h_get_16 (abfd, exec_bytes.m_sync);
|
|---|
| 124 | if (N_BADMAG (anexec))
|
|---|
| 125 | {
|
|---|
| 126 | bfd_set_error (bfd_error_wrong_format);
|
|---|
| 127 | return 0;
|
|---|
| 128 | }
|
|---|
| 129 |
|
|---|
| 130 | if (! os9k_swap_exec_header_in (abfd, &exec_bytes, &anexec))
|
|---|
| 131 | {
|
|---|
| 132 | if (bfd_get_error () != bfd_error_system_call)
|
|---|
| 133 | bfd_set_error (bfd_error_wrong_format);
|
|---|
| 134 | return NULL;
|
|---|
| 135 | }
|
|---|
| 136 | return aout_32_some_aout_object_p (abfd, &anexec, os9k_callback);
|
|---|
| 137 | }
|
|---|
| 138 |
|
|---|
| 139 |
|
|---|
| 140 | /* Finish up the opening of a b.out file for reading. Fill in all the
|
|---|
| 141 | fields that are not handled by common code. */
|
|---|
| 142 |
|
|---|
| 143 | static const bfd_target *
|
|---|
| 144 | os9k_callback (abfd)
|
|---|
| 145 | bfd *abfd;
|
|---|
| 146 | {
|
|---|
| 147 | struct internal_exec *execp = exec_hdr (abfd);
|
|---|
| 148 | unsigned long bss_start;
|
|---|
| 149 |
|
|---|
| 150 | /* Architecture and machine type */
|
|---|
| 151 | bfd_set_arch_mach (abfd, bfd_arch_i386, 0);
|
|---|
| 152 |
|
|---|
| 153 | /* The positions of the string table and symbol table. */
|
|---|
| 154 | obj_str_filepos (abfd) = 0;
|
|---|
| 155 | obj_sym_filepos (abfd) = 0;
|
|---|
| 156 |
|
|---|
| 157 | /* The alignments of the sections */
|
|---|
| 158 | obj_textsec (abfd)->alignment_power = execp->a_talign;
|
|---|
| 159 | obj_datasec (abfd)->alignment_power = execp->a_dalign;
|
|---|
| 160 | obj_bsssec (abfd)->alignment_power = execp->a_balign;
|
|---|
| 161 |
|
|---|
| 162 | /* The starting addresses of the sections. */
|
|---|
| 163 | obj_textsec (abfd)->vma = execp->a_tload;
|
|---|
| 164 | obj_datasec (abfd)->vma = execp->a_dload;
|
|---|
| 165 |
|
|---|
| 166 | /* And reload the sizes, since the aout module zaps them */
|
|---|
| 167 | obj_textsec (abfd)->_raw_size = execp->a_text;
|
|---|
| 168 |
|
|---|
| 169 | bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section */
|
|---|
| 170 | obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
|
|---|
| 171 |
|
|---|
| 172 | /* The file positions of the sections */
|
|---|
| 173 | obj_textsec (abfd)->filepos = execp->a_entry;
|
|---|
| 174 | obj_datasec (abfd)->filepos = execp->a_dload;
|
|---|
| 175 |
|
|---|
| 176 | /* The file positions of the relocation info ***
|
|---|
| 177 | obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
|
|---|
| 178 | obj_datasec (abfd)->rel_filepos = N_DROFF(*execp);
|
|---|
| 179 | */
|
|---|
| 180 |
|
|---|
| 181 | adata (abfd).page_size = 1; /* Not applicable. */
|
|---|
| 182 | adata (abfd).segment_size = 1;/* Not applicable. */
|
|---|
| 183 | adata (abfd).exec_bytes_size = MHCOM_BYTES_SIZE;
|
|---|
| 184 |
|
|---|
| 185 | return abfd->xvec;
|
|---|
| 186 | }
|
|---|
| 187 |
|
|---|
| 188 | #if 0
|
|---|
| 189 | struct bout_data_struct
|
|---|
| 190 | {
|
|---|
| 191 | struct aoutdata a;
|
|---|
| 192 | struct internal_exec e;
|
|---|
| 193 | };
|
|---|
| 194 |
|
|---|
| 195 | static boolean
|
|---|
| 196 | os9k_mkobject (abfd)
|
|---|
| 197 | bfd *abfd;
|
|---|
| 198 | {
|
|---|
| 199 | struct bout_data_struct *rawptr;
|
|---|
| 200 |
|
|---|
| 201 | rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
|
|---|
| 202 | if (rawptr == NULL)
|
|---|
| 203 | return false;
|
|---|
| 204 |
|
|---|
| 205 | abfd->tdata.bout_data = rawptr;
|
|---|
| 206 | exec_hdr (abfd) = &rawptr->e;
|
|---|
| 207 |
|
|---|
| 208 | obj_textsec (abfd) = (asection *) NULL;
|
|---|
| 209 | obj_datasec (abfd) = (asection *) NULL;
|
|---|
| 210 | obj_bsssec (abfd) = (asection *) NULL;
|
|---|
| 211 |
|
|---|
| 212 | return true;
|
|---|
| 213 | }
|
|---|
| 214 |
|
|---|
| 215 | static boolean
|
|---|
| 216 | os9k_write_object_contents (abfd)
|
|---|
| 217 | bfd *abfd;
|
|---|
| 218 | {
|
|---|
| 219 | struct external_exec swapped_hdr;
|
|---|
| 220 |
|
|---|
| 221 | if (! aout_32_make_sections (abfd))
|
|---|
| 222 | return false;
|
|---|
| 223 |
|
|---|
| 224 | exec_hdr (abfd)->a_info = BMAGIC;
|
|---|
| 225 |
|
|---|
| 226 | exec_hdr (abfd)->a_text = obj_textsec (abfd)->_raw_size;
|
|---|
| 227 | exec_hdr (abfd)->a_data = obj_datasec (abfd)->_raw_size;
|
|---|
| 228 | exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_raw_size;
|
|---|
| 229 | exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
|
|---|
| 230 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
|
|---|
| 231 | exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
|
|---|
| 232 | sizeof (struct relocation_info));
|
|---|
| 233 | exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
|
|---|
| 234 | sizeof (struct relocation_info));
|
|---|
| 235 |
|
|---|
| 236 | exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
|
|---|
| 237 | exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
|
|---|
| 238 | exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
|
|---|
| 239 |
|
|---|
| 240 | exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
|
|---|
| 241 | exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
|
|---|
| 242 |
|
|---|
| 243 | bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
|
|---|
| 244 |
|
|---|
| 245 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
|
|---|
| 246 | || (bfd_write ((PTR) & swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
|
|---|
| 247 | != EXEC_BYTES_SIZE))
|
|---|
| 248 | return false;
|
|---|
| 249 |
|
|---|
| 250 | /* Now write out reloc info, followed by syms and strings */
|
|---|
| 251 | if (bfd_get_symcount (abfd) != 0)
|
|---|
| 252 | {
|
|---|
| 253 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*exec_hdr (abfd))), SEEK_SET)
|
|---|
| 254 | != 0)
|
|---|
| 255 | return false;
|
|---|
| 256 |
|
|---|
| 257 | if (!aout_32_write_syms (abfd))
|
|---|
| 258 | return false;
|
|---|
| 259 |
|
|---|
| 260 | if (bfd_seek (abfd, (file_ptr) (N_TROFF (*exec_hdr (abfd))), SEEK_SET)
|
|---|
| 261 | != 0)
|
|---|
| 262 | return false;
|
|---|
| 263 |
|
|---|
| 264 | if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd)))
|
|---|
| 265 | return false;
|
|---|
| 266 | if (bfd_seek (abfd, (file_ptr) (N_DROFF (*exec_hdr (abfd))), SEEK_SET)
|
|---|
| 267 | != 0)
|
|---|
| 268 | return false;
|
|---|
| 269 |
|
|---|
| 270 | if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd)))
|
|---|
| 271 | return false;
|
|---|
| 272 | }
|
|---|
| 273 | return true;
|
|---|
| 274 | }
|
|---|
| 275 | |
|---|
| 276 |
|
|---|
| 277 | static boolean
|
|---|
| 278 | os9k_set_section_contents (abfd, section, location, offset, count)
|
|---|
| 279 | bfd *abfd;
|
|---|
| 280 | sec_ptr section;
|
|---|
| 281 | unsigned char *location;
|
|---|
| 282 | file_ptr offset;
|
|---|
| 283 | int count;
|
|---|
| 284 | {
|
|---|
| 285 |
|
|---|
| 286 | if (abfd->output_has_begun == false)
|
|---|
| 287 | { /* set by bfd.c handler */
|
|---|
| 288 | if (! aout_32_make_sections (abfd))
|
|---|
| 289 | return false;
|
|---|
| 290 |
|
|---|
| 291 | obj_textsec (abfd)->filepos = sizeof (struct internal_exec);
|
|---|
| 292 | obj_datasec (abfd)->filepos = obj_textsec (abfd)->filepos
|
|---|
| 293 | + obj_textsec (abfd)->_raw_size;
|
|---|
| 294 |
|
|---|
| 295 | }
|
|---|
| 296 | /* regardless, once we know what we're doing, we might as well get going */
|
|---|
| 297 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
|
|---|
| 298 | return false;
|
|---|
| 299 |
|
|---|
| 300 | if (count != 0)
|
|---|
| 301 | {
|
|---|
| 302 | return (bfd_write ((PTR) location, 1, count, abfd) == count) ? true : false;
|
|---|
| 303 | }
|
|---|
| 304 | return true;
|
|---|
| 305 | }
|
|---|
| 306 | #endif /* 0 */
|
|---|
| 307 |
|
|---|
| 308 | static int
|
|---|
| 309 | os9k_sizeof_headers (ignore_abfd, ignore)
|
|---|
| 310 | bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
|---|
| 311 | boolean ignore ATTRIBUTE_UNUSED;
|
|---|
| 312 | {
|
|---|
| 313 | return sizeof (struct internal_exec);
|
|---|
| 314 | }
|
|---|
| 315 |
|
|---|
| 316 |
|
|---|
| 317 | /***********************************************************************/
|
|---|
| 318 |
|
|---|
| 319 | #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
|
|---|
| 320 |
|
|---|
| 321 | #define aout_32_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
|
|---|
| 322 |
|
|---|
| 323 | #define aout_32_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
|
|---|
| 324 |
|
|---|
| 325 | #define aout_32_get_section_contents_in_window \
|
|---|
| 326 | _bfd_generic_get_section_contents_in_window
|
|---|
| 327 |
|
|---|
| 328 | #define os9k_bfd_get_relocated_section_contents \
|
|---|
| 329 | bfd_generic_get_relocated_section_contents
|
|---|
| 330 | #define os9k_bfd_relax_section bfd_generic_relax_section
|
|---|
| 331 | #define os9k_bfd_gc_sections bfd_generic_gc_sections
|
|---|
| 332 | #define os9k_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
|
|---|
| 333 | #define os9k_bfd_link_add_symbols _bfd_generic_link_add_symbols
|
|---|
| 334 | #define os9k_bfd_final_link _bfd_generic_final_link
|
|---|
| 335 | #define os9k_bfd_link_split_section _bfd_generic_link_split_section
|
|---|
| 336 |
|
|---|
| 337 | const bfd_target i386os9k_vec =
|
|---|
| 338 | {
|
|---|
| 339 | "i386os9k", /* name */
|
|---|
| 340 | bfd_target_os9k_flavour,
|
|---|
| 341 | BFD_ENDIAN_LITTLE, /* data byte order is little */
|
|---|
| 342 | BFD_ENDIAN_LITTLE, /* hdr byte order is little */
|
|---|
| 343 | (HAS_RELOC | EXEC_P | WP_TEXT), /* object flags */
|
|---|
| 344 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */
|
|---|
| 345 | 0, /* symbol leading char */
|
|---|
| 346 | ' ', /* ar_pad_char */
|
|---|
| 347 | 16, /* ar_max_namelen */
|
|---|
| 348 |
|
|---|
| 349 | bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|---|
| 350 | bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|---|
| 351 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|---|
| 352 | bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|---|
| 353 | bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|---|
| 354 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|---|
| 355 | {_bfd_dummy_target, os9k_object_p, /* bfd_check_format */
|
|---|
| 356 | bfd_generic_archive_p, _bfd_dummy_target},
|
|---|
| 357 | {bfd_false, bfd_false, /* bfd_set_format */
|
|---|
| 358 | _bfd_generic_mkarchive, bfd_false},
|
|---|
| 359 | {bfd_false, bfd_false, /* bfd_write_contents */
|
|---|
| 360 | _bfd_write_archive_contents, bfd_false},
|
|---|
| 361 |
|
|---|
| 362 | BFD_JUMP_TABLE_GENERIC (aout_32),
|
|---|
| 363 | BFD_JUMP_TABLE_COPY (_bfd_generic),
|
|---|
| 364 | BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|---|
| 365 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
|
|---|
| 366 | BFD_JUMP_TABLE_SYMBOLS (aout_32),
|
|---|
| 367 | BFD_JUMP_TABLE_RELOCS (aout_32),
|
|---|
| 368 | BFD_JUMP_TABLE_WRITE (aout_32),
|
|---|
| 369 | BFD_JUMP_TABLE_LINK (os9k),
|
|---|
| 370 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|---|
| 371 |
|
|---|
| 372 | NULL,
|
|---|
| 373 |
|
|---|
| 374 | (PTR) 0,
|
|---|
| 375 | };
|
|---|
