| 1 | /* vms-misc.c -- Miscellaneous functions for VAX (openVMS/VAX) and |
| 2 | EVAX (openVMS/Alpha) files. |
| 3 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | Written by Klaus K"ampf (kkaempf@rmi.de) |
| 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #if __STDC__ |
| 23 | #include <stdarg.h> |
| 24 | #endif |
| 25 | |
| 26 | #include "bfd.h" |
| 27 | #include "sysdep.h" |
| 28 | #include "bfdlink.h" |
| 29 | #include "libbfd.h" |
| 30 | |
| 31 | #include "vms.h" |
| 32 | \f |
| 33 | #if VMS_DEBUG |
| 34 | /* Debug functions. */ |
| 35 | |
| 36 | /* Debug function for all vms extensions |
| 37 | evaluates environment variable VMS_DEBUG for a |
| 38 | numerical value on the first call |
| 39 | all error levels below this value are printed |
| 40 | |
| 41 | levels: |
| 42 | 1 toplevel bfd calls (functions from the bfd vector) |
| 43 | 2 functions called by bfd calls |
| 44 | ... |
| 45 | 9 almost everything |
| 46 | |
| 47 | level is also indentation level. Indentation is performed |
| 48 | if level > 0. */ |
| 49 | |
| 50 | void |
| 51 | _bfd_vms_debug (int level, char *format, ...) |
| 52 | { |
| 53 | static int min_level = -1; |
| 54 | static FILE *output = NULL; |
| 55 | char *eptr; |
| 56 | va_list args; |
| 57 | int abslvl = (level > 0) ? level : - level; |
| 58 | |
| 59 | if (min_level == -1) |
| 60 | { |
| 61 | if ((eptr = getenv ("VMS_DEBUG")) != NULL) |
| 62 | { |
| 63 | min_level = atoi (eptr); |
| 64 | output = stderr; |
| 65 | } |
| 66 | else |
| 67 | min_level = 0; |
| 68 | } |
| 69 | if (output == NULL) |
| 70 | return; |
| 71 | if (abslvl > min_level) |
| 72 | return; |
| 73 | |
| 74 | while (--level>0) |
| 75 | fprintf (output, " "); |
| 76 | va_start (args, format); |
| 77 | vfprintf (output, format, args); |
| 78 | fflush (output); |
| 79 | va_end (args); |
| 80 | } |
| 81 | |
| 82 | /* A debug function |
| 83 | hex dump 'size' bytes starting at 'ptr'. */ |
| 84 | |
| 85 | void |
| 86 | _bfd_hexdump (int level, |
| 87 | unsigned char *ptr, |
| 88 | int size, |
| 89 | int offset) |
| 90 | { |
| 91 | unsigned char *lptr = ptr; |
| 92 | int count = 0; |
| 93 | long start = offset; |
| 94 | |
| 95 | while (size-- > 0) |
| 96 | { |
| 97 | if ((count%16) == 0) |
| 98 | vms_debug (level, "%08lx:", start); |
| 99 | vms_debug (-level, " %02x", *ptr++); |
| 100 | count++; |
| 101 | start++; |
| 102 | if (size == 0) |
| 103 | { |
| 104 | while ((count%16) != 0) |
| 105 | { |
| 106 | vms_debug (-level, " "); |
| 107 | count++; |
| 108 | } |
| 109 | } |
| 110 | if ((count%16) == 0) |
| 111 | { |
| 112 | vms_debug (-level, " "); |
| 113 | while (lptr < ptr) |
| 114 | { |
| 115 | vms_debug (-level, "%c", (*lptr < 32)?'.':*lptr); |
| 116 | lptr++; |
| 117 | } |
| 118 | vms_debug (-level, "\n"); |
| 119 | } |
| 120 | } |
| 121 | if ((count%16) != 0) |
| 122 | vms_debug (-level, "\n"); |
| 123 | } |
| 124 | #endif |
| 125 | \f |
| 126 | /* Hash functions |
| 127 | |
| 128 | These are needed when reading an object file. */ |
| 129 | |
| 130 | /* Allocate new vms_hash_entry |
| 131 | keep the symbol name and a pointer to the bfd symbol in the table. */ |
| 132 | |
| 133 | struct bfd_hash_entry * |
| 134 | _bfd_vms_hash_newfunc (struct bfd_hash_entry *entry, |
| 135 | struct bfd_hash_table *table, |
| 136 | const char *string) |
| 137 | { |
| 138 | vms_symbol_entry *ret; |
| 139 | |
| 140 | #if VMS_DEBUG |
| 141 | vms_debug (5, "_bfd_vms_hash_newfunc (%p, %p, %s)\n", entry, table, string); |
| 142 | #endif |
| 143 | |
| 144 | if (entry == NULL) |
| 145 | { |
| 146 | ret = (vms_symbol_entry *) |
| 147 | bfd_hash_allocate (table, sizeof (vms_symbol_entry)); |
| 148 | if (ret == NULL) |
| 149 | { |
| 150 | bfd_set_error (bfd_error_no_memory); |
| 151 | return NULL; |
| 152 | } |
| 153 | entry = (struct bfd_hash_entry *) ret; |
| 154 | } |
| 155 | |
| 156 | /* Call the allocation method of the base class. */ |
| 157 | ret = (vms_symbol_entry *) bfd_hash_newfunc (entry, table, string); |
| 158 | #if VMS_DEBUG |
| 159 | vms_debug (6, "_bfd_vms_hash_newfunc ret %p\n", ret); |
| 160 | #endif |
| 161 | |
| 162 | ret->symbol = NULL; |
| 163 | |
| 164 | return (struct bfd_hash_entry *)ret; |
| 165 | } |
| 166 | \f |
| 167 | /* Object file input functions. */ |
| 168 | |
| 169 | /* Return type and length from record header (buf) on Alpha. */ |
| 170 | |
| 171 | void |
| 172 | _bfd_vms_get_header_values (bfd * abfd ATTRIBUTE_UNUSED, |
| 173 | unsigned char *buf, |
| 174 | int *type, |
| 175 | int *length) |
| 176 | { |
| 177 | if (type != 0) |
| 178 | *type = bfd_getl16 (buf); |
| 179 | buf += 2; |
| 180 | if (length != 0) |
| 181 | *length = bfd_getl16 (buf); |
| 182 | |
| 183 | #if VMS_DEBUG |
| 184 | vms_debug (10, "_bfd_vms_get_header_values type %x, length %x\n", (type?*type:0), (length?*length:0)); |
| 185 | #endif |
| 186 | } |
| 187 | |
| 188 | /* Get next record from object file to vms_buf. |
| 189 | Set PRIV(buf_size) and return it |
| 190 | |
| 191 | This is a little tricky since it should be portable. |
| 192 | |
| 193 | The openVMS object file has 'variable length' which means that |
| 194 | read() returns data in chunks of (hopefully) correct and expected |
| 195 | size. The linker (and other tools on vms) depend on that. Unix doesn't |
| 196 | know about 'formatted' files, so reading and writing such an object |
| 197 | file in a unix environment is not trivial. |
| 198 | |
| 199 | With the tool 'file' (available on all vms ftp sites), one |
| 200 | can view and change the attributes of a file. Changing from |
| 201 | 'variable length' to 'fixed length, 512 bytes' reveals the |
| 202 | record length at the first 2 bytes of every record. The same |
| 203 | happens during the transfer of object files from vms to unix, |
| 204 | at least with ucx, dec's implementation of tcp/ip. |
| 205 | |
| 206 | The vms format repeats the length at bytes 2 & 3 of every record. |
| 207 | |
| 208 | On the first call (file_format == FF_UNKNOWN) we check if |
| 209 | the first and the third byte pair (!) of the record match. |
| 210 | If they do it's an object file in an unix environment or with |
| 211 | wrong attributes (FF_FOREIGN), else we should be in a vms |
| 212 | environment where read() returns the record size (FF_NATIVE). |
| 213 | |
| 214 | Reading is always done in 2 steps. |
| 215 | First just the record header is read and the length extracted |
| 216 | by get_header_values, |
| 217 | then the read buffer is adjusted and the remaining bytes are |
| 218 | read in. |
| 219 | |
| 220 | All file i/o is always done on even file positions. */ |
| 221 | |
| 222 | int |
| 223 | _bfd_vms_get_record (bfd * abfd) |
| 224 | { |
| 225 | int test_len, test_start, remaining; |
| 226 | unsigned char *vms_buf; |
| 227 | |
| 228 | #if VMS_DEBUG |
| 229 | vms_debug (8, "_bfd_vms_get_record\n"); |
| 230 | #endif |
| 231 | |
| 232 | /* Minimum is 6 bytes on Alpha |
| 233 | (2 bytes length, 2 bytes record id, 2 bytes length repeated) |
| 234 | |
| 235 | On the VAX there's no length information in the record |
| 236 | so start with OBJ_S_C_MAXRECSIZ. */ |
| 237 | |
| 238 | if (PRIV (buf_size) == 0) |
| 239 | { |
| 240 | bfd_size_type amt; |
| 241 | |
| 242 | if (PRIV (is_vax)) |
| 243 | { |
| 244 | amt = OBJ_S_C_MAXRECSIZ; |
| 245 | PRIV (file_format) = FF_VAX; |
| 246 | } |
| 247 | else |
| 248 | amt = 6; |
| 249 | PRIV (vms_buf) = bfd_malloc (amt); |
| 250 | PRIV (buf_size) = amt; |
| 251 | } |
| 252 | |
| 253 | vms_buf = PRIV (vms_buf); |
| 254 | |
| 255 | if (vms_buf == 0) |
| 256 | return -1; |
| 257 | |
| 258 | switch (PRIV (file_format)) |
| 259 | { |
| 260 | case FF_UNKNOWN: |
| 261 | case FF_FOREIGN: |
| 262 | test_len = 6; /* Probe 6 bytes. */ |
| 263 | test_start = 2; /* Where the record starts. */ |
| 264 | break; |
| 265 | |
| 266 | case FF_NATIVE: |
| 267 | test_len = 4; |
| 268 | test_start = 0; |
| 269 | break; |
| 270 | |
| 271 | default: |
| 272 | case FF_VAX: |
| 273 | test_len = 0; |
| 274 | test_start = 0; |
| 275 | break; |
| 276 | } |
| 277 | |
| 278 | /* Skip odd alignment byte. */ |
| 279 | |
| 280 | if (bfd_tell (abfd) & 1) |
| 281 | { |
| 282 | if (bfd_bread (PRIV (vms_buf), (bfd_size_type) 1, abfd) != 1) |
| 283 | { |
| 284 | bfd_set_error (bfd_error_file_truncated); |
| 285 | return 0; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | /* Read the record header on Alpha. */ |
| 290 | if ((test_len != 0) |
| 291 | && (bfd_bread (PRIV (vms_buf), (bfd_size_type) test_len, abfd) |
| 292 | != (bfd_size_type) test_len)) |
| 293 | { |
| 294 | bfd_set_error (bfd_error_file_truncated); |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | /* Check file format on first call. */ |
| 299 | if (PRIV (file_format) == FF_UNKNOWN) |
| 300 | { /* Record length repeats ? */ |
| 301 | if (vms_buf[0] == vms_buf[4] |
| 302 | && vms_buf[1] == vms_buf[5]) |
| 303 | { |
| 304 | PRIV (file_format) = FF_FOREIGN; /* Y: foreign environment. */ |
| 305 | test_start = 2; |
| 306 | } |
| 307 | else |
| 308 | { |
| 309 | PRIV (file_format) = FF_NATIVE; /* N: native environment. */ |
| 310 | test_start = 0; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | if (PRIV (is_vax)) |
| 315 | { |
| 316 | PRIV (rec_length) = bfd_bread (vms_buf, (bfd_size_type) PRIV (buf_size), |
| 317 | abfd); |
| 318 | if (PRIV (rec_length) <= 0) |
| 319 | { |
| 320 | bfd_set_error (bfd_error_file_truncated); |
| 321 | return 0; |
| 322 | } |
| 323 | PRIV (vms_rec) = vms_buf; |
| 324 | } |
| 325 | else |
| 326 | { |
| 327 | /* Alpha. */ |
| 328 | /* Extract vms record length. */ |
| 329 | |
| 330 | _bfd_vms_get_header_values (abfd, vms_buf + test_start, NULL, |
| 331 | & PRIV (rec_length)); |
| 332 | |
| 333 | if (PRIV (rec_length) <= 0) |
| 334 | { |
| 335 | bfd_set_error (bfd_error_file_truncated); |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | /* That's what the linker manual says. */ |
| 340 | |
| 341 | if (PRIV (rec_length) > EOBJ_S_C_MAXRECSIZ) |
| 342 | { |
| 343 | bfd_set_error (bfd_error_file_truncated); |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | /* Adjust the buffer. */ |
| 348 | |
| 349 | if (PRIV (rec_length) > PRIV (buf_size)) |
| 350 | { |
| 351 | PRIV (vms_buf) = bfd_realloc (vms_buf, |
| 352 | (bfd_size_type) PRIV (rec_length)); |
| 353 | vms_buf = PRIV (vms_buf); |
| 354 | if (vms_buf == 0) |
| 355 | return -1; |
| 356 | PRIV (buf_size) = PRIV (rec_length); |
| 357 | } |
| 358 | |
| 359 | /* Read the remaining record. */ |
| 360 | remaining = PRIV (rec_length) - test_len + test_start; |
| 361 | |
| 362 | #if VMS_DEBUG |
| 363 | vms_debug (10, "bfd_bread remaining %d\n", remaining); |
| 364 | #endif |
| 365 | if (bfd_bread (vms_buf + test_len, (bfd_size_type) remaining, abfd) != |
| 366 | (bfd_size_type) remaining) |
| 367 | { |
| 368 | bfd_set_error (bfd_error_file_truncated); |
| 369 | return 0; |
| 370 | } |
| 371 | PRIV (vms_rec) = vms_buf + test_start; |
| 372 | } |
| 373 | |
| 374 | #if VMS_DEBUG |
| 375 | vms_debug (11, "bfd_bread rec_length %d\n", PRIV (rec_length)); |
| 376 | #endif |
| 377 | |
| 378 | return PRIV (rec_length); |
| 379 | } |
| 380 | |
| 381 | /* Get next vms record from file |
| 382 | update vms_rec and rec_length to new (remaining) values. */ |
| 383 | |
| 384 | int |
| 385 | _bfd_vms_next_record (bfd * abfd) |
| 386 | { |
| 387 | #if VMS_DEBUG |
| 388 | vms_debug (8, "_bfd_vms_next_record (len %d, size %d)\n", |
| 389 | PRIV (rec_length), PRIV (rec_size)); |
| 390 | #endif |
| 391 | |
| 392 | if (PRIV (rec_length) > 0) |
| 393 | PRIV (vms_rec) += PRIV (rec_size); |
| 394 | else |
| 395 | { |
| 396 | if (_bfd_vms_get_record (abfd) <= 0) |
| 397 | return -1; |
| 398 | } |
| 399 | |
| 400 | if (!PRIV (vms_rec) || !PRIV (vms_buf) |
| 401 | || PRIV (vms_rec) >= (PRIV (vms_buf) + PRIV (buf_size))) |
| 402 | return -1; |
| 403 | |
| 404 | if (PRIV (is_vax)) |
| 405 | { |
| 406 | PRIV (rec_type) = *(PRIV (vms_rec)); |
| 407 | PRIV (rec_size) = PRIV (rec_length); |
| 408 | } |
| 409 | else |
| 410 | _bfd_vms_get_header_values (abfd, PRIV (vms_rec), &PRIV (rec_type), |
| 411 | &PRIV (rec_size)); |
| 412 | |
| 413 | PRIV (rec_length) -= PRIV (rec_size); |
| 414 | |
| 415 | #if VMS_DEBUG |
| 416 | vms_debug (8, "_bfd_vms_next_record: rec %p, size %d, length %d, type %d\n", |
| 417 | PRIV (vms_rec), PRIV (rec_size), PRIV (rec_length), |
| 418 | PRIV (rec_type)); |
| 419 | #endif |
| 420 | |
| 421 | return PRIV (rec_type); |
| 422 | } |
| 423 | \f |
| 424 | /* Copy sized string (string with fixed length) to new allocated area |
| 425 | size is string length (size of record) */ |
| 426 | |
| 427 | char * |
| 428 | _bfd_vms_save_sized_string (unsigned char *str, int size) |
| 429 | { |
| 430 | char *newstr = bfd_malloc ((bfd_size_type) size + 1); |
| 431 | |
| 432 | if (newstr == NULL) |
| 433 | return NULL; |
| 434 | strncpy (newstr, (char *) str, (size_t) size); |
| 435 | newstr[size] = 0; |
| 436 | |
| 437 | return newstr; |
| 438 | } |
| 439 | |
| 440 | /* Copy counted string (string with length at first byte) to new allocated area |
| 441 | ptr points to length byte on entry */ |
| 442 | |
| 443 | char * |
| 444 | _bfd_vms_save_counted_string (unsigned char *ptr) |
| 445 | { |
| 446 | int len = *ptr++; |
| 447 | |
| 448 | return _bfd_vms_save_sized_string (ptr, len); |
| 449 | } |
| 450 | \f |
| 451 | /* Stack routines for vms ETIR commands. */ |
| 452 | |
| 453 | /* Push value and section index. */ |
| 454 | |
| 455 | void |
| 456 | _bfd_vms_push (bfd * abfd, uquad val, int psect) |
| 457 | { |
| 458 | static int last_psect; |
| 459 | |
| 460 | #if VMS_DEBUG |
| 461 | vms_debug (4, "<push %016lx (%d) at %d>\n", val, psect, PRIV (stackptr)); |
| 462 | #endif |
| 463 | |
| 464 | if (psect >= 0) |
| 465 | last_psect = psect; |
| 466 | |
| 467 | PRIV (stack[PRIV (stackptr)]).value = val; |
| 468 | PRIV (stack[PRIV (stackptr)]).psect = last_psect; |
| 469 | PRIV (stackptr)++; |
| 470 | if (PRIV (stackptr) >= STACKSIZE) |
| 471 | { |
| 472 | bfd_set_error (bfd_error_bad_value); |
| 473 | (*_bfd_error_handler) (_("Stack overflow (%d) in _bfd_vms_push"), PRIV (stackptr)); |
| 474 | exit (1); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | /* Pop value and section index. */ |
| 479 | |
| 480 | uquad |
| 481 | _bfd_vms_pop (bfd * abfd, int *psect) |
| 482 | { |
| 483 | uquad value; |
| 484 | |
| 485 | if (PRIV (stackptr) == 0) |
| 486 | { |
| 487 | bfd_set_error (bfd_error_bad_value); |
| 488 | (*_bfd_error_handler) (_("Stack underflow in _bfd_vms_pop")); |
| 489 | exit (1); |
| 490 | } |
| 491 | PRIV (stackptr)--; |
| 492 | value = PRIV (stack[PRIV (stackptr)]).value; |
| 493 | if ((psect != NULL) && (PRIV (stack[PRIV (stackptr)]).psect >= 0)) |
| 494 | *psect = PRIV (stack[PRIV (stackptr)]).psect; |
| 495 | |
| 496 | #if VMS_DEBUG |
| 497 | vms_debug (4, "<pop %016lx(%d)>\n", value, PRIV (stack[PRIV (stackptr)]).psect); |
| 498 | #endif |
| 499 | |
| 500 | return value; |
| 501 | } |
| 502 | \f |
| 503 | /* Object file output functions. */ |
| 504 | |
| 505 | /* GAS tends to write sections in little chunks (bfd_set_section_contents) |
| 506 | which we can't use directly. So we save the little chunks in linked |
| 507 | lists (one per section) and write them later. */ |
| 508 | |
| 509 | /* Add a new vms_section structure to vms_section_table |
| 510 | - forward chaining -. */ |
| 511 | |
| 512 | static vms_section * |
| 513 | add_new_contents (bfd * abfd, sec_ptr section) |
| 514 | { |
| 515 | vms_section *sptr, *newptr; |
| 516 | |
| 517 | sptr = PRIV (vms_section_table)[section->index]; |
| 518 | if (sptr != NULL) |
| 519 | return sptr; |
| 520 | |
| 521 | newptr = bfd_alloc (abfd, (bfd_size_type) sizeof (vms_section)); |
| 522 | if (newptr == NULL) |
| 523 | return NULL; |
| 524 | newptr->contents = bfd_alloc (abfd, section->size); |
| 525 | if (newptr->contents == NULL) |
| 526 | return NULL; |
| 527 | newptr->offset = 0; |
| 528 | newptr->size = section->size; |
| 529 | newptr->next = 0; |
| 530 | PRIV (vms_section_table)[section->index] = newptr; |
| 531 | return newptr; |
| 532 | } |
| 533 | |
| 534 | /* Save section data & offset to a vms_section structure |
| 535 | vms_section_table[] holds the vms_section chain. */ |
| 536 | |
| 537 | bfd_boolean |
| 538 | _bfd_save_vms_section (bfd * abfd, |
| 539 | sec_ptr section, |
| 540 | const void * data, |
| 541 | file_ptr offset, |
| 542 | bfd_size_type count) |
| 543 | { |
| 544 | vms_section *sptr; |
| 545 | |
| 546 | if (section->index >= VMS_SECTION_COUNT) |
| 547 | { |
| 548 | bfd_set_error (bfd_error_nonrepresentable_section); |
| 549 | return FALSE; |
| 550 | } |
| 551 | if (count == (bfd_size_type)0) |
| 552 | return TRUE; |
| 553 | sptr = add_new_contents (abfd, section); |
| 554 | if (sptr == NULL) |
| 555 | return FALSE; |
| 556 | memcpy (sptr->contents + offset, data, (size_t) count); |
| 557 | |
| 558 | return TRUE; |
| 559 | } |
| 560 | |
| 561 | /* Get vms_section pointer to saved contents for section # index */ |
| 562 | |
| 563 | vms_section * |
| 564 | _bfd_get_vms_section (bfd * abfd, int index) |
| 565 | { |
| 566 | if (index >= VMS_SECTION_COUNT) |
| 567 | { |
| 568 | bfd_set_error (bfd_error_nonrepresentable_section); |
| 569 | return NULL; |
| 570 | } |
| 571 | return PRIV (vms_section_table)[index]; |
| 572 | } |
| 573 | \f |
| 574 | /* Object output routines. */ |
| 575 | |
| 576 | /* Begin new record or record header |
| 577 | write 2 bytes rectype |
| 578 | write 2 bytes record length (filled in at flush) |
| 579 | write 2 bytes header type (ommitted if rechead == -1). */ |
| 580 | |
| 581 | void |
| 582 | _bfd_vms_output_begin (bfd * abfd, int rectype, int rechead) |
| 583 | { |
| 584 | #if VMS_DEBUG |
| 585 | vms_debug (6, "_bfd_vms_output_begin (type %d, head %d)\n", rectype, |
| 586 | rechead); |
| 587 | #endif |
| 588 | |
| 589 | _bfd_vms_output_short (abfd, (unsigned int) rectype); |
| 590 | |
| 591 | /* Save current output position to fill in length later. */ |
| 592 | |
| 593 | if (PRIV (push_level) > 0) |
| 594 | PRIV (length_pos) = PRIV (output_size); |
| 595 | |
| 596 | #if VMS_DEBUG |
| 597 | vms_debug (6, "_bfd_vms_output_begin: length_pos = %d\n", |
| 598 | PRIV (length_pos)); |
| 599 | #endif |
| 600 | |
| 601 | /* Placeholder for length. */ |
| 602 | _bfd_vms_output_short (abfd, 0); |
| 603 | |
| 604 | if (rechead != -1) |
| 605 | _bfd_vms_output_short (abfd, (unsigned int) rechead); |
| 606 | } |
| 607 | |
| 608 | /* Set record/subrecord alignment. */ |
| 609 | |
| 610 | void |
| 611 | _bfd_vms_output_alignment (bfd * abfd, int alignto) |
| 612 | { |
| 613 | #if VMS_DEBUG |
| 614 | vms_debug (6, "_bfd_vms_output_alignment (%d)\n", alignto); |
| 615 | #endif |
| 616 | |
| 617 | PRIV (output_alignment) = alignto; |
| 618 | } |
| 619 | |
| 620 | /* Prepare for subrecord fields. */ |
| 621 | |
| 622 | void |
| 623 | _bfd_vms_output_push (bfd * abfd) |
| 624 | { |
| 625 | #if VMS_DEBUG |
| 626 | vms_debug (6, "vms_output_push (pushed_size = %d)\n", PRIV (output_size)); |
| 627 | #endif |
| 628 | |
| 629 | PRIV (push_level)++; |
| 630 | PRIV (pushed_size) = PRIV (output_size); |
| 631 | } |
| 632 | |
| 633 | /* End of subrecord fields. */ |
| 634 | |
| 635 | void |
| 636 | _bfd_vms_output_pop (bfd * abfd) |
| 637 | { |
| 638 | #if VMS_DEBUG |
| 639 | vms_debug (6, "vms_output_pop (pushed_size = %d)\n", PRIV (pushed_size)); |
| 640 | #endif |
| 641 | |
| 642 | _bfd_vms_output_flush (abfd); |
| 643 | PRIV (length_pos) = 2; |
| 644 | |
| 645 | #if VMS_DEBUG |
| 646 | vms_debug (6, "vms_output_pop: length_pos = %d\n", PRIV (length_pos)); |
| 647 | #endif |
| 648 | |
| 649 | PRIV (pushed_size) = 0; |
| 650 | PRIV (push_level)--; |
| 651 | } |
| 652 | |
| 653 | /* Flush unwritten output, ends current record. */ |
| 654 | |
| 655 | void |
| 656 | _bfd_vms_output_flush (bfd * abfd) |
| 657 | { |
| 658 | int real_size = PRIV (output_size); |
| 659 | int aligncount; |
| 660 | int length; |
| 661 | |
| 662 | #if VMS_DEBUG |
| 663 | vms_debug (6, "_bfd_vms_output_flush (real_size = %d, pushed_size %d at lenpos %d)\n", |
| 664 | real_size, PRIV (pushed_size), PRIV (length_pos)); |
| 665 | #endif |
| 666 | |
| 667 | if (PRIV (push_level) > 0) |
| 668 | length = real_size - PRIV (pushed_size); |
| 669 | else |
| 670 | length = real_size; |
| 671 | |
| 672 | if (length == 0) |
| 673 | return; |
| 674 | aligncount = (PRIV (output_alignment) |
| 675 | - (length % PRIV (output_alignment))) % PRIV (output_alignment); |
| 676 | |
| 677 | #if VMS_DEBUG |
| 678 | vms_debug (6, "align: adding %d bytes\n", aligncount); |
| 679 | #endif |
| 680 | |
| 681 | while (aligncount-- > 0) |
| 682 | { |
| 683 | PRIV (output_buf)[real_size++] = 0; |
| 684 | length++; |
| 685 | } |
| 686 | |
| 687 | /* Put length to buffer. */ |
| 688 | PRIV (output_size) = PRIV (length_pos); |
| 689 | _bfd_vms_output_short (abfd, (unsigned int) length); |
| 690 | |
| 691 | if (PRIV (push_level) == 0) |
| 692 | { |
| 693 | #ifndef VMS |
| 694 | /* Write length first, see FF_FOREIGN in the input routines. */ |
| 695 | fwrite (PRIV (output_buf) + 2, 2, 1, (FILE *) abfd->iostream); |
| 696 | #endif |
| 697 | fwrite (PRIV (output_buf), (size_t) real_size, 1, |
| 698 | (FILE *) abfd->iostream); |
| 699 | |
| 700 | PRIV (output_size) = 0; |
| 701 | } |
| 702 | else |
| 703 | { |
| 704 | PRIV (output_size) = real_size; |
| 705 | PRIV (pushed_size) = PRIV (output_size); |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | /* End record output. */ |
| 710 | |
| 711 | void |
| 712 | _bfd_vms_output_end (bfd * abfd) |
| 713 | { |
| 714 | #if VMS_DEBUG |
| 715 | vms_debug (6, "_bfd_vms_output_end\n"); |
| 716 | #endif |
| 717 | |
| 718 | _bfd_vms_output_flush (abfd); |
| 719 | } |
| 720 | |
| 721 | /* Check remaining buffer size |
| 722 | |
| 723 | Return what's left. */ |
| 724 | |
| 725 | int |
| 726 | _bfd_vms_output_check (bfd * abfd, int size) |
| 727 | { |
| 728 | #if VMS_DEBUG |
| 729 | vms_debug (6, "_bfd_vms_output_check (%d)\n", size); |
| 730 | #endif |
| 731 | |
| 732 | return (MAX_OUTREC_SIZE - (PRIV (output_size) + size + MIN_OUTREC_LUFT)); |
| 733 | } |
| 734 | |
| 735 | /* Output byte (8 bit) value. */ |
| 736 | |
| 737 | void |
| 738 | _bfd_vms_output_byte (bfd * abfd, unsigned int value) |
| 739 | { |
| 740 | #if VMS_DEBUG |
| 741 | vms_debug (6, "_bfd_vms_output_byte (%02x)\n", value); |
| 742 | #endif |
| 743 | |
| 744 | bfd_put_8 (abfd, value & 0xff, PRIV (output_buf) + PRIV (output_size)); |
| 745 | PRIV (output_size) += 1; |
| 746 | } |
| 747 | |
| 748 | /* Output short (16 bit) value. */ |
| 749 | |
| 750 | void |
| 751 | _bfd_vms_output_short (bfd * abfd, unsigned int value) |
| 752 | { |
| 753 | #if VMS_DEBUG |
| 754 | vms_debug (6, "_bfd_vms_output_short (%04x)\n", value); |
| 755 | #endif |
| 756 | |
| 757 | bfd_put_16 (abfd, (bfd_vma) value & 0xffff, |
| 758 | PRIV (output_buf) + PRIV (output_size)); |
| 759 | PRIV (output_size) += 2; |
| 760 | } |
| 761 | |
| 762 | /* Output long (32 bit) value. */ |
| 763 | |
| 764 | void |
| 765 | _bfd_vms_output_long (bfd * abfd, unsigned long value) |
| 766 | { |
| 767 | #if VMS_DEBUG |
| 768 | vms_debug (6, "_bfd_vms_output_long (%08lx)\n", value); |
| 769 | #endif |
| 770 | |
| 771 | bfd_put_32 (abfd, (bfd_vma) value, PRIV (output_buf) + PRIV (output_size)); |
| 772 | PRIV (output_size) += 4; |
| 773 | } |
| 774 | |
| 775 | /* Output quad (64 bit) value. */ |
| 776 | |
| 777 | void |
| 778 | _bfd_vms_output_quad (bfd * abfd, uquad value) |
| 779 | { |
| 780 | #if VMS_DEBUG |
| 781 | vms_debug (6, "_bfd_vms_output_quad (%016lx)\n", value); |
| 782 | #endif |
| 783 | |
| 784 | bfd_put_64(abfd, value, PRIV (output_buf) + PRIV (output_size)); |
| 785 | PRIV (output_size) += 8; |
| 786 | } |
| 787 | |
| 788 | /* Output c-string as counted string. */ |
| 789 | |
| 790 | void |
| 791 | _bfd_vms_output_counted (bfd * abfd, char *value) |
| 792 | { |
| 793 | int len; |
| 794 | |
| 795 | #if VMS_DEBUG |
| 796 | vms_debug (6, "_bfd_vms_output_counted (%s)\n", value); |
| 797 | #endif |
| 798 | |
| 799 | len = strlen (value); |
| 800 | if (len == 0) |
| 801 | { |
| 802 | (*_bfd_error_handler) (_("_bfd_vms_output_counted called with zero bytes")); |
| 803 | return; |
| 804 | } |
| 805 | if (len > 255) |
| 806 | { |
| 807 | (*_bfd_error_handler) (_("_bfd_vms_output_counted called with too many bytes")); |
| 808 | return; |
| 809 | } |
| 810 | _bfd_vms_output_byte (abfd, (unsigned int) len & 0xff); |
| 811 | _bfd_vms_output_dump (abfd, (unsigned char *) value, len); |
| 812 | } |
| 813 | |
| 814 | /* Output character area. */ |
| 815 | |
| 816 | void |
| 817 | _bfd_vms_output_dump (bfd * abfd, |
| 818 | unsigned char *data, |
| 819 | int length) |
| 820 | { |
| 821 | #if VMS_DEBUG |
| 822 | vms_debug (6, "_bfd_vms_output_dump (%d)\n", length); |
| 823 | #endif |
| 824 | |
| 825 | if (length == 0) |
| 826 | return; |
| 827 | |
| 828 | memcpy (PRIV (output_buf) + PRIV (output_size), data, (size_t) length); |
| 829 | PRIV (output_size) += length; |
| 830 | } |
| 831 | |
| 832 | /* Output count bytes of value. */ |
| 833 | |
| 834 | void |
| 835 | _bfd_vms_output_fill (bfd * abfd, |
| 836 | int value, |
| 837 | int count) |
| 838 | { |
| 839 | #if VMS_DEBUG |
| 840 | vms_debug (6, "_bfd_vms_output_fill (val %02x times %d)\n", value, count); |
| 841 | #endif |
| 842 | |
| 843 | if (count == 0) |
| 844 | return; |
| 845 | memset (PRIV (output_buf) + PRIV (output_size), value, (size_t) count); |
| 846 | PRIV (output_size) += count; |
| 847 | } |
| 848 | |
| 849 | /* This hash routine borrowed from GNU-EMACS, and strengthened slightly. ERY. */ |
| 850 | |
| 851 | static int |
| 852 | hash_string (const char *ptr) |
| 853 | { |
| 854 | const unsigned char *p = (unsigned char *) ptr; |
| 855 | const unsigned char *end = p + strlen (ptr); |
| 856 | unsigned char c; |
| 857 | int hash = 0; |
| 858 | |
| 859 | while (p != end) |
| 860 | { |
| 861 | c = *p++; |
| 862 | hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); |
| 863 | } |
| 864 | return hash; |
| 865 | } |
| 866 | |
| 867 | /* Generate a length-hashed VMS symbol name (limited to maxlen chars). */ |
| 868 | |
| 869 | char * |
| 870 | _bfd_vms_length_hash_symbol (bfd * abfd, const char *in, int maxlen) |
| 871 | { |
| 872 | long int result; |
| 873 | int in_len; |
| 874 | char *new_name; |
| 875 | const char *old_name; |
| 876 | int i; |
| 877 | static char outbuf[EOBJ_S_C_SYMSIZ+1]; |
| 878 | char *out = outbuf; |
| 879 | |
| 880 | #if VMS_DEBUG |
| 881 | vms_debug (4, "_bfd_vms_length_hash_symbol \"%s\"\n", in); |
| 882 | #endif |
| 883 | |
| 884 | if (maxlen > EOBJ_S_C_SYMSIZ) |
| 885 | maxlen = EOBJ_S_C_SYMSIZ; |
| 886 | |
| 887 | /* Save this for later. */ |
| 888 | new_name = out; |
| 889 | |
| 890 | /* We may need to truncate the symbol, save the hash for later. */ |
| 891 | in_len = strlen (in); |
| 892 | |
| 893 | result = (in_len > maxlen) ? hash_string (in) : 0; |
| 894 | |
| 895 | old_name = in; |
| 896 | |
| 897 | /* Do the length checking. */ |
| 898 | if (in_len <= maxlen) |
| 899 | i = in_len; |
| 900 | else |
| 901 | { |
| 902 | if (PRIV (flag_hash_long_names)) |
| 903 | i = maxlen-9; |
| 904 | else |
| 905 | i = maxlen; |
| 906 | } |
| 907 | |
| 908 | strncpy (out, in, (size_t) i); |
| 909 | in += i; |
| 910 | out += i; |
| 911 | |
| 912 | if ((in_len > maxlen) |
| 913 | && PRIV (flag_hash_long_names)) |
| 914 | sprintf (out, "_%08lx", result); |
| 915 | else |
| 916 | *out = 0; |
| 917 | |
| 918 | #if VMS_DEBUG |
| 919 | vms_debug (4, "--> [%d]\"%s\"\n", strlen (outbuf), outbuf); |
| 920 | #endif |
| 921 | |
| 922 | if (in_len > maxlen |
| 923 | && PRIV (flag_hash_long_names) |
| 924 | && PRIV (flag_show_after_trunc)) |
| 925 | printf (_("Symbol %s replaced by %s\n"), old_name, new_name); |
| 926 | |
| 927 | return outbuf; |
| 928 | } |
| 929 | |
| 930 | /* Allocate and initialize a new symbol. */ |
| 931 | |
| 932 | static asymbol * |
| 933 | new_symbol (bfd * abfd, char *name) |
| 934 | { |
| 935 | asymbol *symbol; |
| 936 | |
| 937 | #if VMS_DEBUG |
| 938 | _bfd_vms_debug (7, "new_symbol %s\n", name); |
| 939 | #endif |
| 940 | |
| 941 | symbol = bfd_make_empty_symbol (abfd); |
| 942 | if (symbol == 0) |
| 943 | return symbol; |
| 944 | symbol->name = name; |
| 945 | symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME); |
| 946 | |
| 947 | return symbol; |
| 948 | } |
| 949 | |
| 950 | /* Allocate and enter a new private symbol. */ |
| 951 | |
| 952 | vms_symbol_entry * |
| 953 | _bfd_vms_enter_symbol (bfd * abfd, char *name) |
| 954 | { |
| 955 | vms_symbol_entry *entry; |
| 956 | |
| 957 | #if VMS_DEBUG |
| 958 | _bfd_vms_debug (6, "_bfd_vms_enter_symbol %s\n", name); |
| 959 | #endif |
| 960 | |
| 961 | entry = (vms_symbol_entry *) |
| 962 | bfd_hash_lookup (PRIV (vms_symbol_table), name, FALSE, FALSE); |
| 963 | if (entry == 0) |
| 964 | { |
| 965 | #if VMS_DEBUG |
| 966 | _bfd_vms_debug (8, "creating hash entry for %s\n", name); |
| 967 | #endif |
| 968 | entry = (vms_symbol_entry *) bfd_hash_lookup (PRIV (vms_symbol_table), |
| 969 | name, TRUE, FALSE); |
| 970 | if (entry != 0) |
| 971 | { |
| 972 | asymbol *symbol; |
| 973 | symbol = new_symbol (abfd, name); |
| 974 | if (symbol != 0) |
| 975 | { |
| 976 | entry->symbol = symbol; |
| 977 | PRIV (gsd_sym_count)++; |
| 978 | abfd->symcount++; |
| 979 | } |
| 980 | else |
| 981 | entry = 0; |
| 982 | } |
| 983 | else |
| 984 | (*_bfd_error_handler) (_("failed to enter %s"), name); |
| 985 | } |
| 986 | else |
| 987 | { |
| 988 | #if VMS_DEBUG |
| 989 | _bfd_vms_debug (8, "found hash entry for %s\n", name); |
| 990 | #endif |
| 991 | } |
| 992 | |
| 993 | #if VMS_DEBUG |
| 994 | _bfd_vms_debug (7, "-> entry %p, entry->symbol %p\n", entry, entry->symbol); |
| 995 | #endif |
| 996 | return entry; |
| 997 | } |