1 /* BFD backend for hp-ux 9000/300 2 Copyright (C) 1990, 1991, 1994, 1995 Free Software Foundation, Inc. 3 Written by Glenn Engel. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21 /* 22 23 hpux native ------------> | | 24 | hp300hpux bfd | ----------> hpux w/gnu ext 25 hpux w/gnu extension ----> | | 26 27 28 Support for the 9000/[34]00 has several limitations. 29 1. Shared libraries are not supported. 30 2. The output format from this bfd is not usable by native tools. 31 32 The primary motivation for writing this bfd was to allow use of 33 gdb and gcc for host based debugging and not to mimic the hp-ux tools 34 in every detail. This leads to a significant simplification of the 35 code and a leap in performance. The decision to not output hp native 36 compatible objects was further strengthened by the fact that the richness 37 of the gcc compiled objects could not be represented without loss of 38 information. For example, while the hp format supports the concept of 39 secondary symbols, it does not support indirect symbols. Another 40 reason is to maintain backwards compatibility with older implementations 41 of gcc on hpux which used 'hpxt' to translate .a and .o files into a 42 format which could be readily understood by the gnu linker and gdb. 43 This allows reading hp secondary symbols and converting them into 44 indirect symbols but the reverse it not always possible. 45 46 Another example of differences is that the hp format stores symbol offsets 47 in the object code while the gnu utilities use a field in the 48 relocation record for this. To support the hp native format, the object 49 code would need to be patched with the offsets when producing .o files. 50 51 The basic technique taken in this implementation is to #include the code 52 from aoutx.h and aout-target.h with appropriate #defines to override 53 code where a unique implementation is needed: 54 55 { 56 #define a bunch of stuff 57 #include <aoutx.h> 58 59 implement a bunch of functions 60 61 #include "aout-target.h" 62 } 63 64 The hp symbol table is a bit different than other a.out targets. Instead 65 of having an array of nlist items and an array of strings, hp's format 66 has them mixed together in one structure. In addition, the strings are 67 not null terminated. It looks something like this: 68 69 nlist element 1 70 string1 71 nlist element 2 72 string2 73 ... 74 75 The whole symbol table is read as one chunk and then we march thru it 76 and convert it to canonical form. As we march thru the table, we copy 77 the nlist data into the internal form and we compact the strings and null 78 terminate them, using storage from the already allocated symbol table: 79 80 string1 81 null 82 string2 83 null 84 */ 85 86 /* @@ Is this really so different from normal a.out that it needs to include 87 aoutx.h? We should go through this file sometime and see what can be made 88 more dependent on aout32.o and what might need to be broken off and accessed 89 through the backend_data field. Or, maybe we really do need such a 90 completely separate implementation. I don't have time to investigate this 91 much further right now. [raeburn:19930428.2124EST] */ 92 /* @@ Also, note that there wind up being two versions of some routines, with 93 different names, only one of which actually gets used. For example: 94 slurp_symbol_table 95 swap_std_reloc_in 96 slurp_reloc_table 97 get_symtab 98 get_symtab_upper_bound 99 canonicalize_reloc 100 mkobject 101 This should also be fixed. */ 102 103 #define TARGETNAME "a.out-hp300hpux" 104 #define MY(OP) CAT(hp300hpux_,OP) 105 106 #define external_exec hp300hpux_exec_bytes 107 #define external_nlist hp300hpux_nlist_bytes 108 109 #include "aout/hp300hpux.h" 110 111 /* define these so we can compile unused routines in aoutx.h */ 112 #define e_strx e_shlib 113 #define e_other e_length 114 #define e_desc e_almod 115 116 #define AR_PAD_CHAR '/' 117 #define TARGET_IS_BIG_ENDIAN_P 118 #define DEFAULT_ARCH bfd_arch_m68k 119 120 #define MY_get_section_contents aout_32_get_section_contents 121 #define MY_slurp_armap bfd_slurp_bsd_armap_f2 122 123 /***********************************************/ 124 /* provide overrides for routines in this file */ 125 /***********************************************/ 126 /* these don't use MY because that causes problems within JUMP_TABLE 127 (CAT winds up being expanded recursively, which ANSI C compilers 128 will not do). */ 129 #define MY_get_symtab hp300hpux_get_symtab 130 #define MY_get_symtab_upper_bound hp300hpux_get_symtab_upper_bound 131 #define MY_canonicalize_reloc hp300hpux_canonicalize_reloc 132 #define MY_write_object_contents hp300hpux_write_object_contents 133 134 #define MY_read_minisymbols _bfd_generic_read_minisymbols 135 #define MY_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol 136 137 #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 138 #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols 139 #define MY_final_link_callback unused 140 #define MY_bfd_final_link _bfd_generic_final_link 141 142 /* Until and unless we convert the slurp_reloc and slurp_symtab 143 routines in this file, we can not use the default aout 144 free_cached_info routine which assumes that the relocs and symtabs 145 were allocated using malloc. */ 146 #define MY_bfd_free_cached_info bfd_true 147 148 #define hp300hpux_write_syms aout_32_write_syms 149 150 #define MY_callback MY(callback) 151 152 #define MY_exec_hdr_flags 0x2 153 154 #define NAME_swap_exec_header_in NAME(hp300hpux_32_,swap_exec_header_in) 155 156 #define HP_SYMTYPE_UNDEFINED 0x00 157 #define HP_SYMTYPE_ABSOLUTE 0x01 158 #define HP_SYMTYPE_TEXT 0x02 159 #define HP_SYMTYPE_DATA 0x03 160 #define HP_SYMTYPE_BSS 0x04 161 #define HP_SYMTYPE_COMMON 0x05 162 163 #define HP_SYMTYPE_TYPE 0x0F 164 #define HP_SYMTYPE_FILENAME 0x1F 165 166 #define HP_SYMTYPE_ALIGN 0x10 167 #define HP_SYMTYPE_EXTERNAL 0x20 168 #define HP_SECONDARY_SYMBOL 0x40 169 170 /* RELOCATION DEFINITIONS */ 171 #define HP_RSEGMENT_TEXT 0x00 172 #define HP_RSEGMENT_DATA 0x01 173 #define HP_RSEGMENT_BSS 0x02 174 #define HP_RSEGMENT_EXTERNAL 0x03 175 #define HP_RSEGMENT_PCREL 0x04 176 #define HP_RSEGMENT_RDLT 0x05 177 #define HP_RSEGMENT_RPLT 0x06 178 #define HP_RSEGMENT_NOOP 0x3F 179 180 #define HP_RLENGTH_BYTE 0x00 181 #define HP_RLENGTH_WORD 0x01 182 #define HP_RLENGTH_LONG 0x02 183 #define HP_RLENGTH_ALIGN 0x03 184 185 #define NAME(x,y) CAT3(hp300hpux,_32_,y) 186 #define ARCH_SIZE 32 187 188 /* aoutx.h requires definitions for BMAGIC and QMAGIC. */ 189 #define BMAGIC HPUX_DOT_O_MAGIC 190 #define QMAGIC 0314 191 192 #include "aoutx.h" 193 194 /* Since the hpux symbol table has nlist elements interspersed with 195 strings and we need to insert som strings for secondary symbols, we 196 give ourselves a little extra padding up front to account for 197 this. Note that for each non-secondary symbol we process, we gain 198 9 bytes of space for the discarded nlist element (one byte used for 199 null). SYM_EXTRA_BYTES is the extra space. */ 200 #define SYM_EXTRA_BYTES 1024 201 202 /* Set parameters about this a.out file that are machine-dependent. 203 This routine is called from some_aout_object_p just before it returns. */ 204 static const bfd_target * 205 MY (callback) (abfd) 206 bfd *abfd; 207 { 208 struct internal_exec *execp = exec_hdr (abfd); 209 210 /* Calculate the file positions of the parts of a newly read aout header */ 211 obj_textsec (abfd)->_raw_size = N_TXTSIZE (*execp); 212 213 /* The virtual memory addresses of the sections */ 214 obj_textsec (abfd)->vma = N_TXTADDR (*execp); 215 obj_datasec (abfd)->vma = N_DATADDR (*execp); 216 obj_bsssec (abfd)->vma = N_BSSADDR (*execp); 217 218 obj_textsec (abfd)->lma = obj_textsec (abfd)->vma; 219 obj_datasec (abfd)->lma = obj_datasec (abfd)->vma; 220 obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma; 221 222 /* The file offsets of the sections */ 223 obj_textsec (abfd)->filepos = N_TXTOFF (*execp); 224 obj_datasec (abfd)->filepos = N_DATOFF (*execp); 225 226 /* The file offsets of the relocation info */ 227 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp); 228 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp); 229 230 /* The file offsets of the string table and symbol table. */ 231 obj_sym_filepos (abfd) = N_SYMOFF (*execp); 232 obj_str_filepos (abfd) = N_STROFF (*execp); 233 234 /* Determine the architecture and machine type of the object file. */ 235 #ifdef SET_ARCH_MACH 236 SET_ARCH_MACH (abfd, *execp); 237 #else 238 bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0); 239 #endif 240 241 242 if (obj_aout_subformat (abfd) == gnu_encap_format) 243 { 244 /* The file offsets of the relocation info */ 245 obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF (*execp); 246 obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF (*execp); 247 248 /* The file offsets of the string table and symbol table. */ 249 obj_sym_filepos (abfd) = N_GNU_SYMOFF (*execp); 250 obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms); 251 252 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; 253 bfd_get_symcount (abfd) = execp->a_syms / 12; 254 obj_symbol_entry_size (abfd) = 12; 255 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 256 } 257 258 return abfd->xvec; 259 } 260 261 extern boolean aout_32_write_syms PARAMS ((bfd * abfd)); 262 263 static boolean 264 MY (write_object_contents) (abfd) 265 bfd *abfd; 266 { 267 struct external_exec exec_bytes; 268 struct internal_exec *execp = exec_hdr (abfd); 269 bfd_size_type text_size; /* dummy vars */ 270 file_ptr text_end; 271 272 memset (&exec_bytes, 0, sizeof (exec_bytes)); 273 #if CHOOSE_RELOC_SIZE 274 CHOOSE_RELOC_SIZE (abfd); 275 #else 276 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 277 #endif 278 279 if (adata (abfd).magic == undecided_magic) 280 NAME (aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); 281 execp->a_syms = 0; 282 283 execp->a_entry = bfd_get_start_address (abfd); 284 285 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * 286 obj_reloc_entry_size (abfd)); 287 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * 288 obj_reloc_entry_size (abfd)); 289 290 N_SET_MACHTYPE (*execp, 0xc); 291 N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags); 292 293 NAME (aout,swap_exec_header_out) (abfd, execp, &exec_bytes); 294 295 /* update fields not covered by default swap_exec_header_out */ 296 297 /* this is really the sym table size but we store it in drelocs */ 298 bfd_h_put_32 (abfd, bfd_get_symcount (abfd) * 12, exec_bytes.e_drelocs); 299 300 if (bfd_seek (abfd, 0L, false) != 0 301 || (bfd_write ((PTR) & exec_bytes, 1, EXEC_BYTES_SIZE, abfd) 302 != EXEC_BYTES_SIZE)) 303 return false; 304 305 /* Write out the symbols, and then the relocs. We must write out 306 the symbols first so that we know the symbol indices. */ 307 308 if (bfd_get_symcount (abfd) != 0) 309 { 310 /* Skip the relocs to where we want to put the symbols. */ 311 if (bfd_seek (abfd, (file_ptr) N_DRELOFF (*execp) + execp->a_drsize, 312 SEEK_SET) != 0) 313 return false; 314 } 315 316 if (!MY (write_syms) (abfd)) 317 return false; 318 319 if (bfd_get_symcount (abfd) != 0) 320 { 321 if (bfd_seek (abfd, (long) (N_TRELOFF (*execp)), false) != 0) 322 return false; 323 if (!NAME (aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) 324 return false; 325 if (bfd_seek (abfd, (long) (N_DRELOFF (*execp)), false) != 0) 326 return false; 327 if (!NAME (aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) 328 return false; 329 } 330 331 return true; 332 } 333 334 /* convert the hp symbol type to be the same as aout64.h usage so we */ 335 /* can piggyback routines in aoutx.h. */ 336 337 static void 338 convert_sym_type (sym_pointer, cache_ptr, abfd) 339 struct external_nlist *sym_pointer; 340 aout_symbol_type *cache_ptr; 341 bfd *abfd; 342 { 343 int name_type; 344 int new_type; 345 346 name_type = (cache_ptr->type); 347 new_type = 0; 348 349 if ((name_type & HP_SYMTYPE_ALIGN) != 0) 350 { 351 /* iou_error ("aligned symbol encountered: %s", name);*/ 352 name_type = 0; 353 } 354 355 if (name_type == HP_SYMTYPE_FILENAME) 356 new_type = N_FN; 357 else 358 { 359 switch (name_type & HP_SYMTYPE_TYPE) 360 { 361 case HP_SYMTYPE_UNDEFINED: 362 new_type = N_UNDF; 363 break; 364 365 case HP_SYMTYPE_ABSOLUTE: 366 new_type = N_ABS; 367 break; 368 369 case HP_SYMTYPE_TEXT: 370 new_type = N_TEXT; 371 break; 372 373 case HP_SYMTYPE_DATA: 374 new_type = N_DATA; 375 break; 376 377 case HP_SYMTYPE_BSS: 378 new_type = N_BSS; 379 break; 380 381 case HP_SYMTYPE_COMMON: 382 new_type = N_COMM; 383 break; 384 385 default: 386 abort (); 387 break; 388 } 389 if (name_type & HP_SYMTYPE_EXTERNAL) 390 new_type |= N_EXT; 391 392 if (name_type & HP_SECONDARY_SYMBOL) 393 { 394 switch (new_type) 395 { 396 default: 397 abort (); 398 case N_UNDF | N_EXT: 399 new_type = N_WEAKU; 400 break; 401 case N_ABS | N_EXT: 402 new_type = N_WEAKA; 403 break; 404 case N_TEXT | N_EXT: 405 new_type = N_WEAKT; 406 break; 407 case N_DATA | N_EXT: 408 new_type = N_WEAKD; 409 break; 410 case N_BSS | N_EXT: 411 new_type = N_WEAKB; 412 break; 413 } 414 } 415 } 416 cache_ptr->type = new_type; 417 418 } 419 420 421 /* 422 DESCRIPTION 423 Swaps the information in an executable header taken from a raw 424 byte stream memory image, into the internal exec_header 425 structure. 426 */ 427 428 void 429 NAME (aout,swap_exec_header_in) (abfd, raw_bytes, execp) 430 bfd *abfd; 431 struct external_exec *raw_bytes; 432 struct internal_exec *execp; 433 { 434 struct external_exec *bytes = (struct external_exec *) raw_bytes; 435 436 /* The internal_exec structure has some fields that are unused in this 437 configuration (IE for i960), so ensure that all such uninitialized 438 fields are zero'd out. There are places where two of these structs 439 are memcmp'd, and thus the contents do matter. */ 440 memset (execp, 0, sizeof (struct internal_exec)); 441 /* Now fill in fields in the execp, from the bytes in the raw data. */ 442 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); 443 execp->a_text = GET_WORD (abfd, bytes->e_text); 444 execp->a_data = GET_WORD (abfd, bytes->e_data); 445 execp->a_bss = GET_WORD (abfd, bytes->e_bss); 446 execp->a_syms = GET_WORD (abfd, bytes->e_syms); 447 execp->a_entry = GET_WORD (abfd, bytes->e_entry); 448 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); 449 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); 450 451 /***************************************************************/ 452 /* check the header to see if it was generated by a bfd output */ 453 /* this is detected rather bizarely by requiring a bunch of */ 454 /* header fields to be zero and an old unused field (now used) */ 455 /* to be set. */ 456 /***************************************************************/ 457 do 458 { 459 long syms; 460 struct aout_data_struct *rawptr; 461 if (bfd_h_get_32 (abfd, bytes->e_passize) != 0) 462 break; 463 if (bfd_h_get_32 (abfd, bytes->e_syms) != 0) 464 break; 465 if (bfd_h_get_32 (abfd, bytes->e_supsize) != 0) 466 break; 467 468 syms = bfd_h_get_32 (abfd, bytes->e_drelocs); 469 if (syms == 0) 470 break; 471 472 /* OK, we've passed the test as best as we can determine */ 473 execp->a_syms = syms; 474 475 /* allocate storage for where we will store this result */ 476 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (*rawptr)); 477 478 if (rawptr == NULL) 479 return; 480 abfd->tdata.aout_data = rawptr; 481 obj_aout_subformat (abfd) = gnu_encap_format; 482 } 483 while (0); 484 } 485 486 487 /* The hp symbol table is a bit different than other a.out targets. Instead 488 of having an array of nlist items and an array of strings, hp's format 489 has them mixed together in one structure. In addition, the strings are 490 not null terminated. It looks something like this: 491 492 nlist element 1 493 string1 494 nlist element 2 495 string2 496 ... 497 498 The whole symbol table is read as one chunk and then we march thru it 499 and convert it to canonical form. As we march thru the table, we copy 500 the nlist data into the internal form and we compact the strings and null 501 terminate them, using storage from the already allocated symbol table: 502 503 string1 504 null 505 string2 506 null 507 ... 508 */ 509 510 boolean 511 MY (slurp_symbol_table) (abfd) 512 bfd *abfd; 513 { 514 bfd_size_type symbol_bytes; 515 struct external_nlist *syms; 516 struct external_nlist *sym_pointer; 517 struct external_nlist *sym_end; 518 char *strings; 519 aout_symbol_type *cached; 520 unsigned num_syms = 0; 521 522 /* If there's no work to be done, don't do any */ 523 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) 524 return true; 525 symbol_bytes = exec_hdr (abfd)->a_syms; 526 527 strings = (char *) bfd_alloc (abfd, 528 symbol_bytes + SYM_EXTRA_BYTES); 529 if (!strings) 530 return false; 531 syms = (struct external_nlist *) (strings + SYM_EXTRA_BYTES); 532 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 533 || bfd_read ((PTR) syms, symbol_bytes, 1, abfd) != symbol_bytes) 534 { 535 bfd_release (abfd, syms); 536 return false; 537 } 538 539 540 sym_end = (struct external_nlist *) (((char *) syms) + symbol_bytes); 541 542 /* first, march thru the table and figure out how many symbols there are */ 543 for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++, num_syms++) 544 { 545 /* skip over the embedded symbol. */ 546 sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + 547 sym_pointer->e_length[0]); 548 } 549 550 /* now that we know the symbol count, update the bfd header */ 551 bfd_get_symcount (abfd) = num_syms; 552 553 cached = ((aout_symbol_type *) 554 bfd_zalloc (abfd, 555 bfd_get_symcount (abfd) * sizeof (aout_symbol_type))); 556 if (cached == NULL && bfd_get_symcount (abfd) != 0) 557 return false; 558 559 /* as we march thru the hp symbol table, convert it into a list of 560 null terminated strings to hold the symbol names. Make sure any 561 assignment to the strings pointer is done after we're thru using 562 the nlist so we don't overwrite anything important. */ 563 564 /* OK, now walk the new symtable, cacheing symbol properties */ 565 { 566 aout_symbol_type *cache_ptr = cached; 567 aout_symbol_type cache_save; 568 /* Run through table and copy values */ 569 for (sym_pointer = syms, cache_ptr = cached; 570 sym_pointer < sym_end; sym_pointer++, cache_ptr++) 571 { 572 unsigned int length; 573 cache_ptr->symbol.the_bfd = abfd; 574 cache_ptr->symbol.value = GET_SWORD (abfd, sym_pointer->e_value); 575 cache_ptr->desc = bfd_get_16 (abfd, sym_pointer->e_almod); 576 cache_ptr->type = bfd_get_8 (abfd, sym_pointer->e_type); 577 cache_ptr->symbol.udata.p = NULL; 578 length = bfd_get_8 (abfd, sym_pointer->e_length); 579 cache_ptr->other = length; /* other not used, save length here */ 580 581 cache_save = *cache_ptr; 582 convert_sym_type (sym_pointer, cache_ptr, abfd); 583 if (!translate_from_native_sym_flags (abfd, cache_ptr)) 584 return false; 585 586 /********************************************************/ 587 /* for hpux, the 'lenght' value indicates the length of */ 588 /* the symbol name which follows the nlist entry. */ 589 /********************************************************/ 590 if (length) 591 { 592 /**************************************************************/ 593 /* the hp string is not null terminated so we create a new one*/ 594 /* by copying the string to overlap the just vacated nlist */ 595 /* structure before it in memory. */ 596 /**************************************************************/ 597 cache_ptr->symbol.name = strings; 598 memcpy (strings, sym_pointer + 1, length); 599 strings[length] = '\0'; 600 strings += length + 1; 601 } 602 else 603 cache_ptr->symbol.name = (char *) NULL; 604 605 /* skip over the embedded symbol. */ 606 sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + 607 length); 608 } 609 } 610 611 obj_aout_symbols (abfd) = cached; 612 613 return true; 614 } 615 616 617 618 void 619 MY (swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) 620 bfd *abfd; 621 struct hp300hpux_reloc *bytes; 622 arelent *cache_ptr; 623 asymbol **symbols; 624 bfd_size_type symcount; 625 { 626 int r_index; 627 int r_extern = 0; 628 unsigned int r_length; 629 int r_pcrel = 0; 630 struct aoutdata *su = &(abfd->tdata.aout_data->a); 631 632 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); 633 r_index = bfd_h_get_16 (abfd, bytes->r_index); 634 635 switch (bytes->r_type[0]) 636 { 637 case HP_RSEGMENT_TEXT: 638 r_index = N_TEXT; 639 break; 640 case HP_RSEGMENT_DATA: 641 r_index = N_DATA; 642 break; 643 case HP_RSEGMENT_BSS: 644 r_index = N_BSS; 645 break; 646 case HP_RSEGMENT_EXTERNAL: 647 r_extern = 1; 648 break; 649 case HP_RSEGMENT_PCREL: 650 r_extern = 1; 651 r_pcrel = 1; 652 break; 653 case HP_RSEGMENT_RDLT: 654 break; 655 case HP_RSEGMENT_RPLT: 656 break; 657 case HP_RSEGMENT_NOOP: 658 break; 659 default: 660 abort (); 661 break; 662 } 663 664 switch (bytes->r_length[0]) 665 { 666 case HP_RLENGTH_BYTE: 667 r_length = 0; 668 break; 669 case HP_RLENGTH_WORD: 670 r_length = 1; 671 break; 672 case HP_RLENGTH_LONG: 673 r_length = 2; 674 break; 675 default: 676 abort (); 677 break; 678 } 679 680 cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; 681 /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ 682 683 /* This macro uses the r_index value computed above */ 684 if (r_pcrel && r_extern) 685 { 686 /* The GNU linker assumes any offset from beginning of section */ 687 /* is already incorporated into the image while the HP linker */ 688 /* adds this in later. Add it in now... */ 689 MOVE_ADDRESS (-cache_ptr->address); 690 } 691 else 692 { 693 MOVE_ADDRESS (0); 694 } 695 } 696 697 boolean 698 MY (slurp_reloc_table) (abfd, asect, symbols) 699 bfd *abfd; 700 sec_ptr asect; 701 asymbol **symbols; 702 { 703 unsigned int count; 704 bfd_size_type reloc_size; 705 PTR relocs; 706 arelent *reloc_cache; 707 size_t each_size; 708 struct hp300hpux_reloc *rptr; 709 unsigned int counter; 710 arelent *cache_ptr; 711 712 if (asect->relocation) 713 return true; 714 715 if (asect->flags & SEC_CONSTRUCTOR) 716 return true; 717 718 if (asect == obj_datasec (abfd)) 719 { 720 reloc_size = exec_hdr (abfd)->a_drsize; 721 goto doit; 722 } 723 724 if (asect == obj_textsec (abfd)) 725 { 726 reloc_size = exec_hdr (abfd)->a_trsize; 727 goto doit; 728 } 729 730 bfd_set_error (bfd_error_invalid_operation); 731 return false; 732 733 doit: 734 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) 735 return false; 736 each_size = obj_reloc_entry_size (abfd); 737 738 count = reloc_size / each_size; 739 740 741 reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t) (count * sizeof 742 (arelent))); 743 if (!reloc_cache && count != 0) 744 return false; 745 746 relocs = (PTR) bfd_alloc (abfd, reloc_size); 747 if (!relocs && reloc_size != 0) 748 { 749 bfd_release (abfd, reloc_cache); 750 return false; 751 } 752 753 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) 754 { 755 bfd_release (abfd, relocs); 756 bfd_release (abfd, reloc_cache); 757 return false; 758 } 759 760 rptr = (struct hp300hpux_reloc *) relocs; 761 counter = 0; 762 cache_ptr = reloc_cache; 763 764 for (; counter < count; counter++, rptr++, cache_ptr++) 765 { 766 MY (swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols, 767 bfd_get_symcount (abfd)); 768 } 769 770 771 bfd_release (abfd, relocs); 772 asect->relocation = reloc_cache; 773 asect->reloc_count = count; 774 return true; 775 } 776 777 778 /************************************************************************/ 779 /* The following functions are identical to functions in aoutx.h except */ 780 /* they refer to MY(func) rather than NAME(aout,func) and they also */ 781 /* call aout_32 versions if the input file was generated by gcc */ 782 /************************************************************************/ 783 784 long aout_32_get_symtab PARAMS ((bfd * abfd, asymbol ** location)); 785 long aout_32_get_symtab_upper_bound PARAMS ((bfd * abfd)); 786 787 long aout_32_canonicalize_reloc PARAMS ((bfd * abfd, sec_ptr section, 788 arelent ** relptr, 789 asymbol ** symbols)); 790 791 long 792 MY (get_symtab) (abfd, location) 793 bfd *abfd; 794 asymbol **location; 795 { 796 unsigned int counter = 0; 797 aout_symbol_type *symbase; 798 799 if (obj_aout_subformat (abfd) == gnu_encap_format) 800 return aout_32_get_symtab (abfd, location); 801 802 if (!MY (slurp_symbol_table) (abfd)) 803 return -1; 804 805 for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) 806 *(location++) = (asymbol *) (symbase++); 807 *location++ = 0; 808 return bfd_get_symcount (abfd); 809 } 810 811 long 812 MY (get_symtab_upper_bound) (abfd) 813 bfd *abfd; 814 { 815 if (obj_aout_subformat (abfd) == gnu_encap_format) 816 return aout_32_get_symtab_upper_bound (abfd); 817 if (!MY (slurp_symbol_table) (abfd)) 818 return -1; 819 820 return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); 821 } 822 823 824 825 826 long 827 MY (canonicalize_reloc) (abfd, section, relptr, symbols) 828 bfd *abfd; 829 sec_ptr section; 830 arelent **relptr; 831 asymbol **symbols; 832 { 833 arelent *tblptr = section->relocation; 834 unsigned int count; 835 if (obj_aout_subformat (abfd) == gnu_encap_format) 836 return aout_32_canonicalize_reloc (abfd, section, relptr, symbols); 837 838 if (!(tblptr || MY (slurp_reloc_table) (abfd, section, symbols))) 839 return -1; 840 841 if (section->flags & SEC_CONSTRUCTOR) 842 { 843 arelent_chain *chain = section->constructor_chain; 844 for (count = 0; count < section->reloc_count; count++) 845 { 846 *relptr++ = &chain->relent; 847 chain = chain->next; 848 } 849 } 850 else 851 { 852 tblptr = section->relocation; 853 854 for (count = 0; count++ < section->reloc_count;) 855 { 856 *relptr++ = tblptr++; 857 } 858 } 859 *relptr = 0; 860 861 return section->reloc_count; 862 } 863 864 865 #include "aout-target.h" 866