1 /* BFD backend for hp-ux 9000/300 2 Copyright (C) 1990-2014 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 3 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., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 23 /* hpux native ------------> | | 24 | hp300hpux bfd | ----------> hpux w/gnu ext 25 hpux w/gnu extension ----> | | 26 27 Support for the 9000/[34]00 has several limitations. 28 1. Shared libraries are not supported. 29 2. The output format from this bfd is not usable by native tools. 30 31 The primary motivation for writing this bfd was to allow use of 32 gdb and gcc for host based debugging and not to mimic the hp-ux tools 33 in every detail. This leads to a significant simplification of the 34 code and a leap in performance. The decision to not output hp native 35 compatible objects was further strengthened by the fact that the richness 36 of the gcc compiled objects could not be represented without loss of 37 information. For example, while the hp format supports the concept of 38 secondary symbols, it does not support indirect symbols. Another 39 reason is to maintain backwards compatibility with older implementations 40 of gcc on hpux which used 'hpxt' to translate .a and .o files into a 41 format which could be readily understood by the gnu linker and gdb. 42 This allows reading hp secondary symbols and converting them into 43 indirect symbols but the reverse it not always possible. 44 45 Another example of differences is that the hp format stores symbol offsets 46 in the object code while the gnu utilities use a field in the 47 relocation record for this. To support the hp native format, the object 48 code would need to be patched with the offsets when producing .o files. 49 50 The basic technique taken in this implementation is to #include the code 51 from aoutx.h and aout-target.h with appropriate #defines to override 52 code where a unique implementation is needed: 53 54 { 55 #define a bunch of stuff 56 #include <aoutx.h> 57 58 implement a bunch of functions 59 60 #include "aout-target.h" 61 } 62 63 The hp symbol table is a bit different than other a.out targets. Instead 64 of having an array of nlist items and an array of strings, hp's format 65 has them mixed together in one structure. In addition, the strings are 66 not null terminated. It looks something like this: 67 68 nlist element 1 69 string1 70 nlist element 2 71 string2 72 ... 73 74 The whole symbol table is read as one chunk and then we march thru it 75 and convert it to canonical form. As we march thru the table, we copy 76 the nlist data into the internal form and we compact the strings and null 77 terminate them, using storage from the already allocated symbol table: 78 79 string1 80 null 81 string2 82 null 83 */ 84 85 /* @@ Is this really so different from normal a.out that it needs to include 86 aoutx.h? We should go through this file sometime and see what can be made 87 more dependent on aout32.o and what might need to be broken off and accessed 88 through the backend_data field. Or, maybe we really do need such a 89 completely separate implementation. I don't have time to investigate this 90 much further right now. [raeburn:19930428.2124EST] */ 91 /* @@ Also, note that there wind up being two versions of some routines, with 92 different names, only one of which actually gets used. For example: 93 slurp_symbol_table 94 swap_std_reloc_in 95 slurp_reloc_table 96 canonicalize_symtab 97 get_symtab_upper_bound 98 canonicalize_reloc 99 mkobject 100 This should also be fixed. */ 101 102 #define TARGETNAME "a.out-hp300hpux" 103 104 /* Do not "beautify" the CONCAT* macro args. Traditional C will not 105 remove whitespace added here, and thus will fail to concatenate 106 the tokens. */ 107 #define MY(OP) CONCAT2 (m68k_aout_hp300hpux_,OP) 108 109 #define external_exec hp300hpux_exec_bytes 110 #define external_nlist hp300hpux_nlist_bytes 111 112 #include "aout/hp300hpux.h" 113 114 /* define these so we can compile unused routines in aoutx.h */ 115 #define e_strx e_shlib 116 #define e_other e_length 117 #define e_desc e_almod 118 119 #define AR_PAD_CHAR '/' 120 #define TARGET_IS_BIG_ENDIAN_P 121 #define DEFAULT_ARCH bfd_arch_m68k 122 123 #define MY_get_section_contents aout_32_get_section_contents 124 #define MY_slurp_armap bfd_slurp_bsd_armap_f2 125 126 /***********************************************/ 127 /* provide overrides for routines in this file */ 128 /***********************************************/ 129 /* these don't use MY because that causes problems within JUMP_TABLE 130 (CONCAT2 winds up being expanded recursively, which ANSI C compilers 131 will not do). */ 132 #define MY_canonicalize_symtab m68k_aout_hp300hpux_canonicalize_symtab 133 #define MY_get_symtab_upper_bound m68k_aout_hp300hpux_get_symtab_upper_bound 134 #define MY_canonicalize_reloc m68k_aout_hp300hpux_canonicalize_reloc 135 #define MY_write_object_contents m68k_aout_hp300hpux_write_object_contents 136 137 #define MY_read_minisymbols _bfd_generic_read_minisymbols 138 #define MY_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol 139 140 #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 141 #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols 142 #define MY_final_link_callback unused 143 #define MY_bfd_final_link _bfd_generic_final_link 144 145 /* Until and unless we convert the slurp_reloc and slurp_symtab 146 routines in this file, we can not use the default aout 147 free_cached_info routine which assumes that the relocs and symtabs 148 were allocated using malloc. */ 149 #define MY_bfd_free_cached_info bfd_true 150 151 #define m68k_aout_hp300hpux_write_syms aout_32_write_syms 152 153 #define MY_callback MY(callback) 154 155 #define MY_exec_hdr_flags 0x2 156 157 #define NAME_swap_exec_header_in NAME(hp300hpux_32_,swap_exec_header_in) 158 159 #define HP_SYMTYPE_UNDEFINED 0x00 160 #define HP_SYMTYPE_ABSOLUTE 0x01 161 #define HP_SYMTYPE_TEXT 0x02 162 #define HP_SYMTYPE_DATA 0x03 163 #define HP_SYMTYPE_BSS 0x04 164 #define HP_SYMTYPE_COMMON 0x05 165 166 #define HP_SYMTYPE_TYPE 0x0F 167 #define HP_SYMTYPE_FILENAME 0x1F 168 169 #define HP_SYMTYPE_ALIGN 0x10 170 #define HP_SYMTYPE_EXTERNAL 0x20 171 #define HP_SECONDARY_SYMBOL 0x40 172 173 /* RELOCATION DEFINITIONS */ 174 #define HP_RSEGMENT_TEXT 0x00 175 #define HP_RSEGMENT_DATA 0x01 176 #define HP_RSEGMENT_BSS 0x02 177 #define HP_RSEGMENT_EXTERNAL 0x03 178 #define HP_RSEGMENT_PCREL 0x04 179 #define HP_RSEGMENT_RDLT 0x05 180 #define HP_RSEGMENT_RPLT 0x06 181 #define HP_RSEGMENT_NOOP 0x3F 182 183 #define HP_RLENGTH_BYTE 0x00 184 #define HP_RLENGTH_WORD 0x01 185 #define HP_RLENGTH_LONG 0x02 186 #define HP_RLENGTH_ALIGN 0x03 187 188 #define NAME(x,y) CONCAT3 (hp300hpux,_32_,y) 189 #define ARCH_SIZE 32 190 191 /* aoutx.h requires definitions for BMAGIC and QMAGIC. */ 192 #define BMAGIC HPUX_DOT_O_MAGIC 193 #define QMAGIC 0314 194 195 #include "aoutx.h" 196 197 static const bfd_target * MY (callback) (bfd *); 198 static bfd_boolean MY (write_object_contents) (bfd *); 199 static void convert_sym_type 200 (struct external_nlist *, aout_symbol_type *, bfd *); 201 202 bfd_boolean MY (slurp_symbol_table) (bfd *); 203 void MY (swap_std_reloc_in) 204 (bfd *, struct hp300hpux_reloc *, arelent *, asymbol **, bfd_size_type); 205 bfd_boolean MY (slurp_reloc_table) 206 (bfd *, sec_ptr, asymbol **); 207 long MY (canonicalize_symtab) (bfd *, asymbol **); 208 long MY (get_symtab_upper_bound) (bfd *); 209 long MY (canonicalize_reloc) (bfd *, sec_ptr, arelent **, asymbol **); 210 211 /* Since the hpux symbol table has nlist elements interspersed with 212 strings and we need to insert som strings for secondary symbols, we 213 give ourselves a little extra padding up front to account for 214 this. Note that for each non-secondary symbol we process, we gain 215 9 bytes of space for the discarded nlist element (one byte used for 216 null). SYM_EXTRA_BYTES is the extra space. */ 217 #define SYM_EXTRA_BYTES 1024 218 219 /* Set parameters about this a.out file that are machine-dependent. 220 This routine is called from some_aout_object_p just before it returns. */ 221 static const bfd_target * 222 MY (callback) (bfd *abfd) 223 { 224 struct internal_exec *execp = exec_hdr (abfd); 225 226 /* Calculate the file positions of the parts of a newly read aout header */ 227 obj_textsec (abfd)->size = N_TXTSIZE (*execp); 228 229 /* The virtual memory addresses of the sections */ 230 obj_textsec (abfd)->vma = N_TXTADDR (*execp); 231 obj_datasec (abfd)->vma = N_DATADDR (*execp); 232 obj_bsssec (abfd)->vma = N_BSSADDR (*execp); 233 234 obj_textsec (abfd)->lma = obj_textsec (abfd)->vma; 235 obj_datasec (abfd)->lma = obj_datasec (abfd)->vma; 236 obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma; 237 238 /* The file offsets of the sections */ 239 obj_textsec (abfd)->filepos = N_TXTOFF (*execp); 240 obj_datasec (abfd)->filepos = N_DATOFF (*execp); 241 242 /* The file offsets of the relocation info */ 243 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp); 244 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp); 245 246 /* The file offsets of the string table and symbol table. */ 247 obj_sym_filepos (abfd) = N_SYMOFF (*execp); 248 obj_str_filepos (abfd) = N_STROFF (*execp); 249 250 /* Determine the architecture and machine type of the object file. */ 251 #ifdef SET_ARCH_MACH 252 SET_ARCH_MACH (abfd, *execp); 253 #else 254 bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0); 255 #endif 256 257 if (obj_aout_subformat (abfd) == gnu_encap_format) 258 { 259 /* The file offsets of the relocation info */ 260 obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF (*execp); 261 obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF (*execp); 262 263 /* The file offsets of the string table and symbol table. */ 264 obj_sym_filepos (abfd) = N_GNU_SYMOFF (*execp); 265 obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms); 266 267 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; 268 bfd_get_symcount (abfd) = execp->a_syms / 12; 269 obj_symbol_entry_size (abfd) = 12; 270 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 271 } 272 273 return abfd->xvec; 274 } 275 276 extern bfd_boolean aout_32_write_syms (bfd *); 277 278 static bfd_boolean 279 MY (write_object_contents) (bfd * abfd) 280 { 281 struct external_exec exec_bytes; 282 struct internal_exec *execp = exec_hdr (abfd); 283 bfd_size_type text_size; /* dummy vars */ 284 file_ptr text_end; 285 286 memset (&exec_bytes, 0, sizeof (exec_bytes)); 287 288 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 289 290 if (adata (abfd).magic == undecided_magic) 291 NAME (aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); 292 execp->a_syms = 0; 293 294 execp->a_entry = bfd_get_start_address (abfd); 295 296 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * 297 obj_reloc_entry_size (abfd)); 298 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * 299 obj_reloc_entry_size (abfd)); 300 301 N_SET_MACHTYPE (*execp, 0xc); 302 N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags); 303 304 NAME (aout,swap_exec_header_out) (abfd, execp, &exec_bytes); 305 306 /* update fields not covered by default swap_exec_header_out */ 307 308 /* this is really the sym table size but we store it in drelocs */ 309 H_PUT_32 (abfd, (bfd_get_symcount (abfd) * 12), exec_bytes.e_drelocs); 310 311 if (bfd_seek (abfd, (file_ptr) 0, FALSE) != 0 312 || (bfd_bwrite (&exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) 313 != EXEC_BYTES_SIZE)) 314 return FALSE; 315 316 /* Write out the symbols, and then the relocs. We must write out 317 the symbols first so that we know the symbol indices. */ 318 319 if (bfd_get_symcount (abfd) != 0) 320 { 321 /* Skip the relocs to where we want to put the symbols. */ 322 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp) + execp->a_drsize), 323 SEEK_SET) != 0) 324 return FALSE; 325 } 326 327 if (!MY (write_syms) (abfd)) 328 return FALSE; 329 330 if (bfd_get_symcount (abfd) != 0) 331 { 332 if (bfd_seek (abfd, (file_ptr) N_TRELOFF (*execp), SEEK_CUR) != 0) 333 return FALSE; 334 if (!NAME (aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) 335 return FALSE; 336 if (bfd_seek (abfd, (file_ptr) N_DRELOFF (*execp), SEEK_CUR) != 0) 337 return FALSE; 338 if (!NAME (aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) 339 return FALSE; 340 } 341 342 return TRUE; 343 } 344 345 /* Convert the hp symbol type to be the same as aout64.h usage so we 346 can piggyback routines in aoutx.h. */ 347 348 static void 349 convert_sym_type (struct external_nlist *sym_pointer ATTRIBUTE_UNUSED, 350 aout_symbol_type *cache_ptr, 351 bfd *abfd ATTRIBUTE_UNUSED) 352 { 353 int name_type; 354 int new_type; 355 356 name_type = (cache_ptr->type); 357 new_type = 0; 358 359 if ((name_type & HP_SYMTYPE_ALIGN) != 0) 360 { 361 /* iou_error ("aligned symbol encountered: %s", name);*/ 362 name_type = 0; 363 } 364 365 if (name_type == HP_SYMTYPE_FILENAME) 366 new_type = N_FN; 367 else 368 { 369 switch (name_type & HP_SYMTYPE_TYPE) 370 { 371 case HP_SYMTYPE_UNDEFINED: 372 new_type = N_UNDF; 373 break; 374 375 case HP_SYMTYPE_ABSOLUTE: 376 new_type = N_ABS; 377 break; 378 379 case HP_SYMTYPE_TEXT: 380 new_type = N_TEXT; 381 break; 382 383 case HP_SYMTYPE_DATA: 384 new_type = N_DATA; 385 break; 386 387 case HP_SYMTYPE_BSS: 388 new_type = N_BSS; 389 break; 390 391 case HP_SYMTYPE_COMMON: 392 new_type = N_COMM; 393 break; 394 395 default: 396 abort (); 397 break; 398 } 399 if (name_type & HP_SYMTYPE_EXTERNAL) 400 new_type |= N_EXT; 401 402 if (name_type & HP_SECONDARY_SYMBOL) 403 { 404 switch (new_type) 405 { 406 default: 407 abort (); 408 case N_UNDF | N_EXT: 409 /* If the value is nonzero, then just treat this as a 410 common symbol. I don't know if this is correct in 411 all cases, but it is more correct than treating it as 412 a weak undefined symbol. */ 413 if (cache_ptr->symbol.value == 0) 414 new_type = N_WEAKU; 415 break; 416 case N_ABS | N_EXT: 417 new_type = N_WEAKA; 418 break; 419 case N_TEXT | N_EXT: 420 new_type = N_WEAKT; 421 break; 422 case N_DATA | N_EXT: 423 new_type = N_WEAKD; 424 break; 425 case N_BSS | N_EXT: 426 new_type = N_WEAKB; 427 break; 428 } 429 } 430 } 431 cache_ptr->type = new_type; 432 433 } 434 435 /* 436 DESCRIPTION 437 Swaps the information in an executable header taken from a raw 438 byte stream memory image, into the internal exec_header 439 structure. 440 */ 441 442 void 443 NAME (aout,swap_exec_header_in) (bfd *abfd, 444 struct external_exec *raw_bytes, 445 struct internal_exec *execp) 446 { 447 struct external_exec *bytes = (struct external_exec *) raw_bytes; 448 449 /* The internal_exec structure has some fields that are unused in this 450 configuration (IE for i960), so ensure that all such uninitialized 451 fields are zero'd out. There are places where two of these structs 452 are memcmp'd, and thus the contents do matter. */ 453 memset (execp, 0, sizeof (struct internal_exec)); 454 /* Now fill in fields in the execp, from the bytes in the raw data. */ 455 execp->a_info = H_GET_32 (abfd, bytes->e_info); 456 execp->a_text = GET_WORD (abfd, bytes->e_text); 457 execp->a_data = GET_WORD (abfd, bytes->e_data); 458 execp->a_bss = GET_WORD (abfd, bytes->e_bss); 459 execp->a_syms = GET_WORD (abfd, bytes->e_syms); 460 execp->a_entry = GET_WORD (abfd, bytes->e_entry); 461 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); 462 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); 463 464 /***************************************************************/ 465 /* check the header to see if it was generated by a bfd output */ 466 /* this is detected rather bizarrely by requiring a bunch of */ 467 /* header fields to be zero and an old unused field (now used) */ 468 /* to be set. */ 469 /***************************************************************/ 470 do 471 { 472 long syms; 473 struct aout_data_struct *rawptr; 474 bfd_size_type amt; 475 476 if (H_GET_32 (abfd, bytes->e_passize) != 0) 477 break; 478 if (H_GET_32 (abfd, bytes->e_syms) != 0) 479 break; 480 if (H_GET_32 (abfd, bytes->e_supsize) != 0) 481 break; 482 483 syms = H_GET_32 (abfd, bytes->e_drelocs); 484 if (syms == 0) 485 break; 486 487 /* OK, we've passed the test as best as we can determine */ 488 execp->a_syms = syms; 489 490 /* allocate storage for where we will store this result */ 491 amt = sizeof (*rawptr); 492 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); 493 494 if (rawptr == NULL) 495 return; 496 abfd->tdata.aout_data = rawptr; 497 obj_aout_subformat (abfd) = gnu_encap_format; 498 } 499 while (0); 500 } 501 502 /* The hp symbol table is a bit different than other a.out targets. Instead 503 of having an array of nlist items and an array of strings, hp's format 504 has them mixed together in one structure. In addition, the strings are 505 not null terminated. It looks something like this: 506 507 nlist element 1 508 string1 509 nlist element 2 510 string2 511 ... 512 513 The whole symbol table is read as one chunk and then we march thru it 514 and convert it to canonical form. As we march thru the table, we copy 515 the nlist data into the internal form and we compact the strings and null 516 terminate them, using storage from the already allocated symbol table: 517 518 string1 519 null 520 string2 521 null 522 ... 523 */ 524 525 bfd_boolean 526 MY (slurp_symbol_table) (bfd *abfd) 527 { 528 bfd_size_type symbol_bytes; 529 struct external_nlist *syms; 530 struct external_nlist *sym_pointer; 531 struct external_nlist *sym_end; 532 char *strings; 533 aout_symbol_type *cached; 534 unsigned num_syms = 0; 535 bfd_size_type amt; 536 537 /* If there's no work to be done, don't do any */ 538 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) 539 return TRUE; 540 symbol_bytes = exec_hdr (abfd)->a_syms; 541 542 amt = symbol_bytes + SYM_EXTRA_BYTES; 543 strings = (char *) bfd_alloc (abfd, amt); 544 if (!strings) 545 return FALSE; 546 syms = (struct external_nlist *) (strings + SYM_EXTRA_BYTES); 547 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 548 || bfd_bread (syms, symbol_bytes, abfd) != symbol_bytes) 549 { 550 bfd_release (abfd, syms); 551 return FALSE; 552 } 553 554 sym_end = (struct external_nlist *) (((char *) syms) + symbol_bytes); 555 556 /* first, march thru the table and figure out how many symbols there are */ 557 for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++, num_syms++) 558 { 559 /* skip over the embedded symbol. */ 560 sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + 561 sym_pointer->e_length[0]); 562 } 563 564 /* now that we know the symbol count, update the bfd header */ 565 bfd_get_symcount (abfd) = num_syms; 566 567 amt = num_syms; 568 amt *= sizeof (aout_symbol_type); 569 cached = (aout_symbol_type *) bfd_zalloc (abfd, amt); 570 if (cached == NULL && num_syms != 0) 571 return FALSE; 572 573 /* as we march thru the hp symbol table, convert it into a list of 574 null terminated strings to hold the symbol names. Make sure any 575 assignment to the strings pointer is done after we're thru using 576 the nlist so we don't overwrite anything important. */ 577 578 /* OK, now walk the new symtable, caching symbol properties */ 579 { 580 aout_symbol_type *cache_ptr = cached; 581 /* Run through table and copy values */ 582 for (sym_pointer = syms, cache_ptr = cached; 583 sym_pointer < sym_end; sym_pointer++, cache_ptr++) 584 { 585 unsigned int length; 586 cache_ptr->symbol.the_bfd = abfd; 587 cache_ptr->symbol.value = GET_SWORD (abfd, sym_pointer->e_value); 588 cache_ptr->desc = bfd_get_16 (abfd, sym_pointer->e_almod); 589 cache_ptr->type = bfd_get_8 (abfd, sym_pointer->e_type); 590 cache_ptr->symbol.udata.p = NULL; 591 length = bfd_get_8 (abfd, sym_pointer->e_length); 592 cache_ptr->other = length; /* other not used, save length here */ 593 594 convert_sym_type (sym_pointer, cache_ptr, abfd); 595 if (!translate_from_native_sym_flags (abfd, cache_ptr)) 596 return FALSE; 597 598 /********************************************************/ 599 /* for hpux, the 'length' value indicates the length of */ 600 /* the symbol name which follows the nlist entry. */ 601 /********************************************************/ 602 if (length) 603 { 604 /**************************************************************/ 605 /* the hp string is not null terminated so we create a new one*/ 606 /* by copying the string to overlap the just vacated nlist */ 607 /* structure before it in memory. */ 608 /**************************************************************/ 609 cache_ptr->symbol.name = strings; 610 memcpy (strings, sym_pointer + 1, length); 611 strings[length] = '\0'; 612 strings += length + 1; 613 } 614 else 615 cache_ptr->symbol.name = (char *) NULL; 616 617 /* skip over the embedded symbol. */ 618 sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + 619 length); 620 } 621 } 622 623 obj_aout_symbols (abfd) = cached; 624 625 return TRUE; 626 } 627 628 void 629 MY (swap_std_reloc_in) (bfd *abfd, 630 struct hp300hpux_reloc *bytes, 631 arelent *cache_ptr, 632 asymbol **symbols, 633 bfd_size_type symcount ATTRIBUTE_UNUSED) 634 { 635 int r_index; 636 int r_extern = 0; 637 unsigned int r_length; 638 int r_pcrel = 0; 639 struct aoutdata *su = &(abfd->tdata.aout_data->a); 640 641 cache_ptr->address = H_GET_32 (abfd, bytes->r_address); 642 r_index = H_GET_16 (abfd, bytes->r_index); 643 644 switch (bytes->r_type[0]) 645 { 646 case HP_RSEGMENT_TEXT: 647 r_index = N_TEXT; 648 break; 649 case HP_RSEGMENT_DATA: 650 r_index = N_DATA; 651 break; 652 case HP_RSEGMENT_BSS: 653 r_index = N_BSS; 654 break; 655 case HP_RSEGMENT_EXTERNAL: 656 r_extern = 1; 657 break; 658 case HP_RSEGMENT_PCREL: 659 r_extern = 1; 660 r_pcrel = 1; 661 break; 662 case HP_RSEGMENT_RDLT: 663 break; 664 case HP_RSEGMENT_RPLT: 665 break; 666 case HP_RSEGMENT_NOOP: 667 break; 668 default: 669 abort (); 670 break; 671 } 672 673 switch (bytes->r_length[0]) 674 { 675 case HP_RLENGTH_BYTE: 676 r_length = 0; 677 break; 678 case HP_RLENGTH_WORD: 679 r_length = 1; 680 break; 681 case HP_RLENGTH_LONG: 682 r_length = 2; 683 break; 684 default: 685 abort (); 686 break; 687 } 688 689 cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; 690 /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ 691 692 /* This macro uses the r_index value computed above */ 693 if (r_pcrel && r_extern) 694 { 695 /* The GNU linker assumes any offset from beginning of section */ 696 /* is already incorporated into the image while the HP linker */ 697 /* adds this in later. Add it in now... */ 698 MOVE_ADDRESS (-cache_ptr->address); 699 } 700 else 701 { 702 MOVE_ADDRESS (0); 703 } 704 } 705 706 bfd_boolean 707 MY (slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) 708 { 709 bfd_size_type count; 710 bfd_size_type reloc_size; 711 void * relocs; 712 arelent *reloc_cache; 713 size_t each_size; 714 struct hp300hpux_reloc *rptr; 715 unsigned int counter; 716 arelent *cache_ptr; 717 718 if (asect->relocation) 719 return TRUE; 720 721 if (asect->flags & SEC_CONSTRUCTOR) 722 return TRUE; 723 724 if (asect == obj_datasec (abfd)) 725 { 726 reloc_size = exec_hdr (abfd)->a_drsize; 727 goto doit; 728 } 729 730 if (asect == obj_textsec (abfd)) 731 { 732 reloc_size = exec_hdr (abfd)->a_trsize; 733 goto doit; 734 } 735 736 bfd_set_error (bfd_error_invalid_operation); 737 return FALSE; 738 739 doit: 740 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) 741 return FALSE; 742 each_size = obj_reloc_entry_size (abfd); 743 744 count = reloc_size / each_size; 745 746 reloc_cache = (arelent *) bfd_zalloc (abfd, count * sizeof (arelent)); 747 if (!reloc_cache && count != 0) 748 return FALSE; 749 750 relocs = bfd_alloc (abfd, reloc_size); 751 if (!relocs && reloc_size != 0) 752 { 753 bfd_release (abfd, reloc_cache); 754 return FALSE; 755 } 756 757 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) 758 { 759 bfd_release (abfd, relocs); 760 bfd_release (abfd, reloc_cache); 761 return FALSE; 762 } 763 764 rptr = (struct hp300hpux_reloc *) relocs; 765 counter = 0; 766 cache_ptr = reloc_cache; 767 768 for (; counter < count; counter++, rptr++, cache_ptr++) 769 { 770 MY (swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols, 771 (bfd_size_type) bfd_get_symcount (abfd)); 772 } 773 774 bfd_release (abfd, relocs); 775 asect->relocation = reloc_cache; 776 asect->reloc_count = count; 777 return TRUE; 778 } 779 780 /************************************************************************/ 781 /* The following functions are identical to functions in aoutx.h except */ 782 /* they refer to MY(func) rather than NAME(aout,func) and they also */ 783 /* call aout_32 versions if the input file was generated by gcc */ 784 /************************************************************************/ 785 786 long aout_32_canonicalize_symtab (bfd *, asymbol **); 787 long aout_32_get_symtab_upper_bound (bfd *); 788 long aout_32_canonicalize_reloc (bfd *, sec_ptr, arelent **, asymbol **); 789 790 long 791 MY (canonicalize_symtab) (bfd *abfd, asymbol **location) 792 { 793 unsigned int counter = 0; 794 aout_symbol_type *symbase; 795 796 if (obj_aout_subformat (abfd) == gnu_encap_format) 797 return aout_32_canonicalize_symtab (abfd, location); 798 799 if (!MY (slurp_symbol_table) (abfd)) 800 return -1; 801 802 for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) 803 *(location++) = (asymbol *) (symbase++); 804 *location++ = 0; 805 return bfd_get_symcount (abfd); 806 } 807 808 long 809 MY (get_symtab_upper_bound) (bfd *abfd) 810 { 811 if (obj_aout_subformat (abfd) == gnu_encap_format) 812 return aout_32_get_symtab_upper_bound (abfd); 813 if (!MY (slurp_symbol_table) (abfd)) 814 return -1; 815 816 return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); 817 } 818 819 long 820 MY (canonicalize_reloc) (bfd *abfd, 821 sec_ptr section, 822 arelent **relptr, 823 asymbol **symbols) 824 { 825 arelent *tblptr = section->relocation; 826 unsigned int count; 827 828 if (obj_aout_subformat (abfd) == gnu_encap_format) 829 return aout_32_canonicalize_reloc (abfd, section, relptr, symbols); 830 831 if (!(tblptr || MY (slurp_reloc_table) (abfd, section, symbols))) 832 return -1; 833 834 if (section->flags & SEC_CONSTRUCTOR) 835 { 836 arelent_chain *chain = section->constructor_chain; 837 for (count = 0; count < section->reloc_count; count++) 838 { 839 *relptr++ = &chain->relent; 840 chain = chain->next; 841 } 842 } 843 else 844 { 845 tblptr = section->relocation; 846 847 for (count = 0; count++ < section->reloc_count;) 848 { 849 *relptr++ = tblptr++; 850 } 851 } 852 *relptr = 0; 853 854 return section->reloc_count; 855 } 856 857 #include "aout-target.h" 858
