1 /* BFD back-end for TMS320C30 a.out binaries. 2 Copyright (C) 1998-2014 Free Software Foundation, Inc. 3 Contributed by Steven Haworth (steve (at) pm.cse.rmit.edu.au) 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, MA 20 02110-1301, USA. */ 21 22 #define TARGET_IS_BIG_ENDIAN_P 23 #define N_HEADER_IN_TEXT(x) 1 24 #define TEXT_START_ADDR 1024 25 #define TARGET_PAGE_SIZE 128 26 #define SEGMENT_SIZE TARGET_PAGE_SIZE 27 #define DEFAULT_ARCH bfd_arch_tic30 28 #define ARCH_SIZE 32 29 30 /* Do not "beautify" the CONCAT* macro args. Traditional C will not 31 remove whitespace added here, and thus will fail to concatenate 32 the tokens. */ 33 #define MY(OP) CONCAT2 (tic30_aout_,OP) 34 #define TARGETNAME "a.out-tic30" 35 #define NAME(x,y) CONCAT3 (tic30_aout,_32_,y) 36 37 #include "sysdep.h" 38 #include "bfd.h" 39 #include "libaout.h" 40 #include "aout/aout64.h" 41 #include "aout/stab_gnu.h" 42 #include "aout/ar.h" 43 44 #define MY_reloc_howto(BFD, REL, IN, EX, PC) tic30_aout_reloc_howto (BFD, REL, & IN, & EX, & PC) 45 46 #define MY_final_link_relocate tic30_aout_final_link_relocate 47 #define MY_object_p tic30_aout_object_p 48 #define MY_mkobject NAME (aout,mkobject) 49 #define MY_write_object_contents tic30_aout_write_object_contents 50 #define MY_set_sizes tic30_aout_set_sizes 51 52 #ifndef MY_exec_hdr_flags 53 #define MY_exec_hdr_flags 1 54 #endif 55 56 #ifndef MY_backend_data 57 58 #ifndef MY_zmagic_contiguous 59 #define MY_zmagic_contiguous 0 60 #endif 61 #ifndef MY_text_includes_header 62 #define MY_text_includes_header 0 63 #endif 64 #ifndef MY_entry_is_text_address 65 #define MY_entry_is_text_address 0 66 #endif 67 #ifndef MY_exec_header_not_counted 68 #define MY_exec_header_not_counted 1 69 #endif 70 #ifndef MY_add_dynamic_symbols 71 #define MY_add_dynamic_symbols 0 72 #endif 73 #ifndef MY_add_one_symbol 74 #define MY_add_one_symbol 0 75 #endif 76 #ifndef MY_link_dynamic_object 77 #define MY_link_dynamic_object 0 78 #endif 79 #ifndef MY_write_dynamic_symbol 80 #define MY_write_dynamic_symbol 0 81 #endif 82 #ifndef MY_check_dynamic_reloc 83 #define MY_check_dynamic_reloc 0 84 #endif 85 #ifndef MY_finish_dynamic_link 86 #define MY_finish_dynamic_link 0 87 #endif 88 89 static bfd_boolean 90 tic30_aout_set_sizes (bfd *abfd) 91 { 92 adata (abfd).page_size = TARGET_PAGE_SIZE; 93 94 #ifdef SEGMENT_SIZE 95 adata (abfd).segment_size = SEGMENT_SIZE; 96 #else 97 adata (abfd).segment_size = TARGET_PAGE_SIZE; 98 #endif 99 100 #ifdef ZMAGIC_DISK_BLOCK_SIZE 101 adata (abfd).zmagic_disk_block_size = ZMAGIC_DISK_BLOCK_SIZE; 102 #else 103 adata (abfd).zmagic_disk_block_size = TARGET_PAGE_SIZE; 104 #endif 105 106 adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE; 107 108 return TRUE; 109 } 110 111 static const struct aout_backend_data tic30_aout_backend_data = 112 { 113 MY_zmagic_contiguous, 114 MY_text_includes_header, 115 MY_entry_is_text_address, 116 MY_exec_hdr_flags, 117 0, /* Text vma? */ 118 MY_set_sizes, 119 MY_exec_header_not_counted, 120 MY_add_dynamic_symbols, 121 MY_add_one_symbol, 122 MY_link_dynamic_object, 123 MY_write_dynamic_symbol, 124 MY_check_dynamic_reloc, 125 MY_finish_dynamic_link 126 }; 127 #define MY_backend_data &tic30_aout_backend_data 128 #endif 129 130 static reloc_howto_type * 131 tic30_aout_reloc_howto (bfd *, struct reloc_std_external *, int *, int *, int *); 132 static bfd_reloc_status_type 133 tic30_aout_final_link_relocate 134 (reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma, bfd_vma, bfd_vma); 135 136 /* FIXME: This is wrong. aoutx.h should really only be included by 137 aout32.c. */ 138 139 #include "aoutx.h" 140 141 /* This function is used to work out pc-relative offsets for the 142 TMS320C30. The data already placed by md_pcrel_from within gas is 143 useless for a relocation, so we just get the offset value and place 144 a version of this within the object code. 145 tic30_aout_final_link_relocate will then calculate the required 146 relocation to add on to the value in the object code. */ 147 148 static bfd_reloc_status_type 149 tic30_aout_fix_pcrel_16 (bfd *abfd, 150 arelent *reloc_entry, 151 asymbol *symbol ATTRIBUTE_UNUSED, 152 void * data, 153 asection *input_section ATTRIBUTE_UNUSED, 154 bfd *output_bfd ATTRIBUTE_UNUSED, 155 char **error_message ATTRIBUTE_UNUSED) 156 { 157 bfd_vma relocation = 1; 158 bfd_byte offset_data = bfd_get_8 (abfd, (bfd_byte *) data + reloc_entry->address - 1); 159 160 /* The byte before the location of the fix contains bits 23-16 of 161 the pcrel instruction. Bit 21 is set for a delayed instruction 162 which requires on offset of 3 instead of 1. */ 163 if (offset_data & 0x20) 164 relocation -= 3; 165 else 166 relocation -= 1; 167 bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address); 168 return bfd_reloc_ok; 169 } 170 171 /* This function is used as a callback for 16-bit relocs. This is 172 required for relocations between segments. A line in aoutx.h 173 requires that any relocations for the data section should point to 174 the end of the aligned text section, plus an offset. By default, 175 this does not happen, therefore this function takes care of 176 that. */ 177 178 static bfd_reloc_status_type 179 tic30_aout_fix_16 (bfd *abfd, 180 arelent *reloc_entry, 181 asymbol *symbol, 182 void * data, 183 asection *input_section ATTRIBUTE_UNUSED, 184 bfd *output_bfd, 185 char **error_message ATTRIBUTE_UNUSED) 186 { 187 bfd_vma relocation; 188 189 /* Make sure that the symbol's section is defined. */ 190 if (bfd_is_und_section (symbol->section) && (symbol->flags & BSF_WEAK) == 0) 191 return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined; 192 /* Get the size of the input section and turn it into the TMS320C30 193 32-bit address format. */ 194 relocation = (symbol->section->vma >> 2); 195 relocation += bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); 196 bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address); 197 return bfd_reloc_ok; 198 } 199 200 /* This function does the same thing as tic30_aout_fix_16 except for 32 201 bit relocations. */ 202 203 static bfd_reloc_status_type 204 tic30_aout_fix_32 (bfd *abfd, 205 arelent *reloc_entry, 206 asymbol *symbol, 207 void * data, 208 asection *input_section ATTRIBUTE_UNUSED, 209 bfd *output_bfd, 210 char **error_message ATTRIBUTE_UNUSED) 211 { 212 bfd_vma relocation; 213 214 /* Make sure that the symbol's section is defined. */ 215 if (bfd_is_und_section (symbol->section) && (symbol->flags & BSF_WEAK) == 0) 216 return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined; 217 /* Get the size of the input section and turn it into the TMS320C30 218 32-bit address format. */ 219 relocation = (symbol->section->vma >> 2); 220 relocation += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 221 bfd_put_32 (abfd, relocation, (bfd_byte *) data + reloc_entry->address); 222 return bfd_reloc_ok; 223 } 224 225 /* This table lists the relocation types for the TMS320C30. There are 226 only a few relocations required, and all must be divided by 4 (>> 227 2) to get the 32-bit addresses in the format the TMS320C30 likes 228 it. */ 229 reloc_howto_type tic30_aout_howto_table[] = 230 { 231 EMPTY_HOWTO (-1), 232 HOWTO (1, 2, 1, 16, FALSE, 0, 0, tic30_aout_fix_16, 233 "16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE), 234 HOWTO (2, 2, 2, 24, FALSE, 0, complain_overflow_bitfield, NULL, 235 "24", FALSE, 0x00FFFFFF, 0x00FFFFFF, FALSE), 236 HOWTO (3, 18, 3, 24, FALSE, 0, complain_overflow_bitfield, NULL, 237 "LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE), 238 HOWTO (4, 2, 4, 32, FALSE, 0, complain_overflow_bitfield, tic30_aout_fix_32, 239 "32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE), 240 HOWTO (5, 2, 1, 16, TRUE, 0, complain_overflow_signed, 241 tic30_aout_fix_pcrel_16, "PCREL", TRUE, 0x0000FFFF, 0x0000FFFF, TRUE), 242 EMPTY_HOWTO (-1), 243 EMPTY_HOWTO (-1), 244 EMPTY_HOWTO (-1), 245 EMPTY_HOWTO (-1), 246 EMPTY_HOWTO (-1) 247 }; 248 249 250 static reloc_howto_type * 251 tic30_aout_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 252 bfd_reloc_code_real_type code) 253 { 254 switch (code) 255 { 256 case BFD_RELOC_8: 257 case BFD_RELOC_TIC30_LDP: 258 return &tic30_aout_howto_table[3]; 259 case BFD_RELOC_16: 260 return &tic30_aout_howto_table[1]; 261 case BFD_RELOC_24: 262 return &tic30_aout_howto_table[2]; 263 case BFD_RELOC_16_PCREL: 264 return &tic30_aout_howto_table[5]; 265 case BFD_RELOC_32: 266 return &tic30_aout_howto_table[4]; 267 default: 268 return NULL; 269 } 270 } 271 272 static reloc_howto_type * 273 tic30_aout_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 274 const char *r_name) 275 { 276 unsigned int i; 277 278 for (i = 0; 279 i < (sizeof (tic30_aout_howto_table) 280 / sizeof (tic30_aout_howto_table[0])); 281 i++) 282 if (tic30_aout_howto_table[i].name != NULL 283 && strcasecmp (tic30_aout_howto_table[i].name, r_name) == 0) 284 return &tic30_aout_howto_table[i]; 285 286 return NULL; 287 } 288 289 static reloc_howto_type * 290 tic30_aout_reloc_howto (bfd *abfd, 291 struct reloc_std_external *relocs, 292 int *r_index, 293 int *r_extern, 294 int *r_pcrel) 295 { 296 unsigned int r_length; 297 unsigned int r_pcrel_done; 298 int howto_index; 299 300 *r_pcrel = 0; 301 if (bfd_header_big_endian (abfd)) 302 { 303 *r_index = ((relocs->r_index[0] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[2]); 304 *r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); 305 r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); 306 r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) >> RELOC_STD_BITS_LENGTH_SH_BIG); 307 } 308 else 309 { 310 *r_index = ((relocs->r_index[2] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[0]); 311 *r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); 312 r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); 313 r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) >> RELOC_STD_BITS_LENGTH_SH_LITTLE); 314 } 315 howto_index = r_length + 4 * r_pcrel_done; 316 return tic30_aout_howto_table + howto_index; 317 } 318 319 /* These macros will get 24-bit values from the bfd definition. 320 Big-endian only. */ 321 #define bfd_getb_24(BFD,ADDR) \ 322 (bfd_get_8 (BFD, ADDR ) << 16) | \ 323 (bfd_get_8 (BFD, ADDR + 1) << 8) | \ 324 (bfd_get_8 (BFD, ADDR + 2) ) 325 326 #define bfd_putb_24(BFD,DATA,ADDR) \ 327 bfd_put_8 (BFD, (bfd_byte) ((DATA >> 16) & 0xFF), ADDR ); \ 328 bfd_put_8 (BFD, (bfd_byte) ((DATA >> 8) & 0xFF), ADDR + 1); \ 329 bfd_put_8 (BFD, (bfd_byte) ( DATA & 0xFF), ADDR + 2) 330 331 /* Set parameters about this a.out file that are machine-dependent. 332 This routine is called from some_aout_object_p just before it returns. */ 333 334 static const bfd_target * 335 tic30_aout_callback (bfd *abfd) 336 { 337 struct internal_exec *execp = exec_hdr (abfd); 338 unsigned int arch_align_power; 339 unsigned long arch_align; 340 341 /* Calculate the file positions of the parts of a newly read aout header. */ 342 obj_textsec (abfd)->size = N_TXTSIZE (*execp); 343 344 /* The virtual memory addresses of the sections. */ 345 obj_textsec (abfd)->vma = N_TXTADDR (*execp); 346 obj_datasec (abfd)->vma = N_DATADDR (*execp); 347 obj_bsssec (abfd)->vma = N_BSSADDR (*execp); 348 349 obj_textsec (abfd)->lma = obj_textsec (abfd)->vma; 350 obj_datasec (abfd)->lma = obj_datasec (abfd)->vma; 351 obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma; 352 353 /* The file offsets of the sections. */ 354 obj_textsec (abfd)->filepos = N_TXTOFF (*execp); 355 obj_datasec (abfd)->filepos = N_DATOFF (*execp); 356 357 /* The file offsets of the relocation info. */ 358 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp); 359 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp); 360 361 /* The file offsets of the string table and symbol table. */ 362 obj_sym_filepos (abfd) = N_SYMOFF (*execp); 363 obj_str_filepos (abfd) = N_STROFF (*execp); 364 365 /* Determine the architecture and machine type of the object file. */ 366 #ifdef SET_ARCH_MACH 367 SET_ARCH_MACH (abfd, *execp); 368 #else 369 bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0L); 370 #endif 371 372 /* Now that we know the architecture, set the alignments of the 373 sections. This is normally done by NAME (aout,new_section_hook), 374 but when the initial sections were created the architecture had 375 not yet been set. However, for backward compatibility, we don't 376 set the alignment power any higher than as required by the size 377 of the section. */ 378 arch_align_power = bfd_get_arch_info (abfd)->section_align_power; 379 arch_align = 1 << arch_align_power; 380 if ((BFD_ALIGN (obj_textsec (abfd)->size, arch_align) 381 == obj_textsec (abfd)->size) 382 && (BFD_ALIGN (obj_datasec (abfd)->size, arch_align) 383 == obj_datasec (abfd)->size) 384 && (BFD_ALIGN (obj_bsssec (abfd)->size, arch_align) 385 == obj_bsssec (abfd)->size)) 386 { 387 obj_textsec (abfd)->alignment_power = arch_align_power; 388 obj_datasec (abfd)->alignment_power = arch_align_power; 389 obj_bsssec (abfd)->alignment_power = arch_align_power; 390 } 391 return abfd->xvec; 392 } 393 394 static bfd_reloc_status_type 395 tic30_aout_relocate_contents (reloc_howto_type *howto, 396 bfd *input_bfd, 397 bfd_vma relocation, 398 bfd_byte *location) 399 { 400 bfd_vma x; 401 bfd_boolean overflow; 402 403 if (howto->size < 0) 404 relocation = -relocation; 405 406 switch (howto->size) 407 { 408 default: 409 case 0: 410 abort (); 411 break; 412 case 1: 413 x = bfd_get_16 (input_bfd, location); 414 break; 415 case 2: 416 x = bfd_getb_24 (input_bfd, location); 417 break; 418 case 3: 419 x = bfd_get_8 (input_bfd, location); 420 break; 421 case 4: 422 x = bfd_get_32 (input_bfd, location); 423 break; 424 } 425 426 overflow = FALSE; 427 428 if (howto->complain_on_overflow != complain_overflow_dont) 429 { 430 bfd_vma check; 431 bfd_signed_vma signed_check; 432 bfd_vma add; 433 bfd_signed_vma signed_add; 434 435 if (howto->rightshift == 0) 436 { 437 check = relocation; 438 signed_check = (bfd_signed_vma) relocation; 439 } 440 else 441 { 442 check = relocation >> howto->rightshift; 443 if ((bfd_signed_vma) relocation >= 0) 444 signed_check = check; 445 else 446 signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift))); 447 } 448 add = x & howto->src_mask; 449 signed_add = add; 450 if ((add & (((~howto->src_mask) >> 1) & howto->src_mask)) != 0) 451 signed_add -= (((~howto->src_mask) >> 1) & howto->src_mask) << 1; 452 if (howto->bitpos == 0) 453 { 454 check += add; 455 signed_check += signed_add; 456 } 457 else 458 { 459 check += add >> howto->bitpos; 460 if (signed_add >= 0) 461 signed_check += add >> howto->bitpos; 462 else 463 signed_check += ((add >> howto->bitpos) | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->bitpos))); 464 } 465 switch (howto->complain_on_overflow) 466 { 467 case complain_overflow_signed: 468 { 469 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; 470 bfd_signed_vma reloc_signed_min = ~reloc_signed_max; 471 472 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) 473 overflow = TRUE; 474 } 475 break; 476 case complain_overflow_unsigned: 477 { 478 bfd_vma reloc_unsigned_max = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1; 479 480 if (check > reloc_unsigned_max) 481 overflow = TRUE; 482 } 483 break; 484 case complain_overflow_bitfield: 485 { 486 bfd_vma reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1; 487 488 if ((check & ~reloc_bits) != 0 489 && (((bfd_vma) signed_check & ~reloc_bits) 490 != ((bfd_vma) -1 & ~reloc_bits))) 491 overflow = TRUE; 492 } 493 break; 494 default: 495 abort (); 496 } 497 } 498 relocation >>= (bfd_vma) howto->rightshift; 499 relocation <<= (bfd_vma) howto->bitpos; 500 x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask)); 501 switch (howto->size) 502 { 503 default: 504 case 0: 505 abort (); 506 break; 507 case 1: 508 bfd_put_16 (input_bfd, x, location); 509 break; 510 case 2: 511 bfd_putb_24 (input_bfd, x, location); 512 break; 513 case 3: 514 bfd_put_8 (input_bfd, x, location); 515 break; 516 case 4: 517 bfd_put_32 (input_bfd, x, location); 518 break; 519 } 520 return overflow ? bfd_reloc_overflow : bfd_reloc_ok; 521 } 522 523 static bfd_reloc_status_type 524 tic30_aout_final_link_relocate (reloc_howto_type *howto, 525 bfd *input_bfd, 526 asection *input_section, 527 bfd_byte *contents, 528 bfd_vma address, 529 bfd_vma value, 530 bfd_vma addend) 531 { 532 bfd_vma relocation; 533 534 if (address > bfd_get_section_limit (input_bfd, input_section)) 535 return bfd_reloc_outofrange; 536 537 relocation = value + addend; 538 if (howto->pc_relative) 539 { 540 relocation -= (input_section->output_section->vma + input_section->output_offset); 541 if (howto->pcrel_offset) 542 relocation -= address; 543 } 544 return tic30_aout_relocate_contents (howto, input_bfd, relocation, 545 contents + address); 546 } 547 548 /* Finish up the reading of an a.out file header. */ 549 550 static const bfd_target * 551 tic30_aout_object_p (bfd *abfd) 552 { 553 struct external_exec exec_bytes; /* Raw exec header from file. */ 554 struct internal_exec exec; /* Cleaned-up exec header. */ 555 const bfd_target *target; 556 bfd_size_type amt = EXEC_BYTES_SIZE; 557 558 if (bfd_bread (& exec_bytes, amt, abfd) != amt) 559 { 560 if (bfd_get_error () != bfd_error_system_call) 561 bfd_set_error (bfd_error_wrong_format); 562 return 0; 563 } 564 565 #ifdef SWAP_MAGIC 566 exec.a_info = SWAP_MAGIC (exec_bytes.e_info); 567 #else 568 exec.a_info = H_GET_32 (abfd, exec_bytes.e_info); 569 #endif /* SWAP_MAGIC */ 570 571 if (N_BADMAG (exec)) 572 return 0; 573 #ifdef MACHTYPE_OK 574 if (!(MACHTYPE_OK (N_MACHTYPE (exec)))) 575 return 0; 576 #endif 577 578 NAME (aout, swap_exec_header_in) (abfd, &exec_bytes, &exec); 579 580 #ifdef SWAP_MAGIC 581 /* Swap_exec_header_in read in a_info with the wrong byte order. */ 582 exec.a_info = SWAP_MAGIC (exec_bytes.e_info); 583 #endif 584 585 target = NAME (aout, some_aout_object_p) (abfd, &exec, tic30_aout_callback); 586 587 #ifdef ENTRY_CAN_BE_ZERO 588 /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage) 589 means that it isn't obvious if EXEC_P should be set. 590 All of the following must be true for an executable: 591 There must be no relocations, the bfd can be neither an 592 archive nor an archive element, and the file must be executable. */ 593 594 if (exec.a_trsize + exec.a_drsize == 0 595 && bfd_get_format (abfd) == bfd_object && abfd->my_archive == NULL) 596 { 597 struct stat buf; 598 #ifndef S_IXUSR 599 #define S_IXUSR 0100 /* Execute by owner. */ 600 #endif 601 if (stat (abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR)) 602 abfd->flags |= EXEC_P; 603 } 604 #endif 605 606 return target; 607 } 608 609 /* Copy private section data. This actually does nothing with the 610 sections. It copies the subformat field. We copy it here, because 611 we need to know whether this is a QMAGIC file before we set the 612 section contents, and copy_private_bfd_data is not called until 613 after the section contents have been set. */ 614 615 static bfd_boolean 616 MY_bfd_copy_private_section_data (bfd *ibfd, 617 asection *isec ATTRIBUTE_UNUSED, 618 bfd *obfd, 619 asection *osec ATTRIBUTE_UNUSED) 620 { 621 if (bfd_get_flavour (obfd) == bfd_target_aout_flavour) 622 obj_aout_subformat (obfd) = obj_aout_subformat (ibfd); 623 return TRUE; 624 } 625 626 /* Write an object file. 627 Section contents have already been written. We write the 628 file header, symbols, and relocation. */ 629 630 static bfd_boolean 631 tic30_aout_write_object_contents (bfd *abfd) 632 { 633 struct external_exec exec_bytes; 634 struct internal_exec *execp = exec_hdr (abfd); 635 636 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 637 638 { 639 bfd_size_type text_size; /* Dummy vars. */ 640 file_ptr text_end; 641 642 if (adata (abfd).magic == undecided_magic) 643 NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end); 644 645 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; 646 execp->a_entry = bfd_get_start_address (abfd); 647 648 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * obj_reloc_entry_size (abfd)); 649 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * obj_reloc_entry_size (abfd)); 650 NAME (aout, swap_exec_header_out) (abfd, execp, &exec_bytes); 651 652 if (adata (abfd).exec_bytes_size > 0) 653 { 654 bfd_size_type amt; 655 656 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 657 return FALSE; 658 amt = adata (abfd).exec_bytes_size; 659 if (bfd_bwrite (& exec_bytes, amt, abfd) != amt) 660 return FALSE; 661 } 662 663 /* Now write out reloc info, followed by syms and strings. */ 664 if (bfd_get_outsymbols (abfd) != (asymbol **) NULL 665 && bfd_get_symcount (abfd) != 0) 666 { 667 if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*execp)), SEEK_SET) != 0) 668 return FALSE; 669 670 if (!NAME (aout, write_syms) (abfd)) 671 return FALSE; 672 } 673 674 if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0) 675 return FALSE; 676 if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) 677 return FALSE; 678 679 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0) 680 return FALSE; 681 if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) 682 return FALSE; 683 } 684 685 return TRUE; 686 } 687 688 #ifndef MY_final_link_callback 689 690 /* Callback for the final_link routine to set the section offsets. */ 691 692 static void 693 MY_final_link_callback (bfd *abfd, 694 file_ptr *ptreloff, 695 file_ptr *pdreloff, 696 file_ptr *psymoff) 697 { 698 struct internal_exec *execp = exec_hdr (abfd); 699 700 *ptreloff = obj_datasec (abfd)->filepos + execp->a_data; 701 *pdreloff = *ptreloff + execp->a_trsize; 702 *psymoff = *pdreloff + execp->a_drsize; 703 } 704 705 #endif 706 707 #ifndef MY_bfd_final_link 708 709 /* Final link routine. We need to use a call back to get the correct 710 offsets in the output file. */ 711 712 static bfd_boolean 713 MY_bfd_final_link (bfd *abfd, struct bfd_link_info *info) 714 { 715 struct internal_exec *execp = exec_hdr (abfd); 716 file_ptr pos; 717 bfd_vma vma = 0; 718 int pad; 719 720 /* Set the executable header size to 0, as we don't want one for an 721 output. */ 722 adata (abfd).exec_bytes_size = 0; 723 pos = adata (abfd).exec_bytes_size; 724 /* Text. */ 725 vma = info->create_object_symbols_section->vma; 726 pos += vma; 727 obj_textsec (abfd)->filepos = pos; 728 obj_textsec (abfd)->vma = vma; 729 obj_textsec (abfd)->user_set_vma = 1; 730 pos += obj_textsec (abfd)->size; 731 vma += obj_textsec (abfd)->size; 732 733 /* Data. */ 734 if (abfd->flags & D_PAGED) 735 { 736 if (info->create_object_symbols_section->next->vma > 0) 737 obj_datasec (abfd)->vma = info->create_object_symbols_section->next->vma; 738 else 739 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); 740 } 741 else 742 obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4); 743 744 if (obj_datasec (abfd)->vma < vma) 745 obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4); 746 747 obj_datasec (abfd)->user_set_vma = 1; 748 vma = obj_datasec (abfd)->vma; 749 obj_datasec (abfd)->filepos = vma + adata (abfd).exec_bytes_size; 750 execp->a_text = vma - obj_textsec (abfd)->vma; 751 obj_textsec (abfd)->size = execp->a_text; 752 753 /* Since BSS follows data immediately, see if it needs alignment. */ 754 vma += obj_datasec (abfd)->size; 755 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; 756 obj_datasec (abfd)->size += pad; 757 pos += obj_datasec (abfd)->size; 758 execp->a_data = obj_datasec (abfd)->size; 759 760 /* BSS. */ 761 obj_bsssec (abfd)->vma = vma; 762 obj_bsssec (abfd)->user_set_vma = 1; 763 764 /* We are fully resized, so don't readjust in final_link. */ 765 adata (abfd).magic = z_magic; 766 767 return NAME (aout, final_link) (abfd, info, MY_final_link_callback); 768 } 769 770 #endif 771 772 static enum machine_type 773 tic30_aout_machine_type (enum bfd_architecture arch, 774 unsigned long machine ATTRIBUTE_UNUSED, 775 bfd_boolean *unknown) 776 { 777 enum machine_type arch_flags; 778 779 arch_flags = M_UNKNOWN; 780 *unknown = TRUE; 781 782 switch (arch) 783 { 784 case bfd_arch_tic30: 785 *unknown = FALSE; 786 break; 787 default: 788 arch_flags = M_UNKNOWN; 789 } 790 if (arch_flags != M_UNKNOWN) 791 *unknown = FALSE; 792 return arch_flags; 793 } 794 795 static bfd_boolean 796 tic30_aout_set_arch_mach (bfd *abfd, 797 enum bfd_architecture arch, 798 unsigned long machine) 799 { 800 if (!bfd_default_set_arch_mach (abfd, arch, machine)) 801 return FALSE; 802 if (arch != bfd_arch_unknown) 803 { 804 bfd_boolean unknown; 805 tic30_aout_machine_type (arch, machine, &unknown); 806 if (unknown) 807 return FALSE; 808 } 809 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 810 return (*aout_backend_info (abfd)->set_sizes) (abfd); 811 } 812 813 /* We assume BFD generic archive files. */ 814 #ifndef MY_openr_next_archived_file 815 #define MY_openr_next_archived_file bfd_generic_openr_next_archived_file 816 #endif 817 #ifndef MY_get_elt_at_index 818 #define MY_get_elt_at_index _bfd_generic_get_elt_at_index 819 #endif 820 #ifndef MY_generic_stat_arch_elt 821 #define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt 822 #endif 823 #ifndef MY_slurp_armap 824 #define MY_slurp_armap bfd_slurp_bsd_armap 825 #endif 826 #ifndef MY_slurp_extended_name_table 827 #define MY_slurp_extended_name_table _bfd_slurp_extended_name_table 828 #endif 829 #ifndef MY_construct_extended_name_table 830 #define MY_construct_extended_name_table \ 831 _bfd_archive_bsd_construct_extended_name_table 832 #endif 833 #ifndef MY_write_armap 834 #define MY_write_armap bsd_write_armap 835 #endif 836 #ifndef MY_read_ar_hdr 837 #define MY_read_ar_hdr _bfd_generic_read_ar_hdr 838 #endif 839 #ifndef MY_write_ar_hdr 840 #define MY_write_ar_hdr _bfd_generic_write_ar_hdr 841 #endif 842 #ifndef MY_truncate_arname 843 #define MY_truncate_arname bfd_bsd_truncate_arname 844 #endif 845 #ifndef MY_update_armap_timestamp 846 #define MY_update_armap_timestamp _bfd_archive_bsd_update_armap_timestamp 847 #endif 848 849 /* No core file defined here -- configure in trad-core.c separately. */ 850 #ifndef MY_core_file_failing_command 851 #define MY_core_file_failing_command _bfd_nocore_core_file_failing_command 852 #endif 853 #ifndef MY_core_file_failing_signal 854 #define MY_core_file_failing_signal _bfd_nocore_core_file_failing_signal 855 #endif 856 #ifndef MY_core_file_matches_executable_p 857 #define MY_core_file_matches_executable_p \ 858 _bfd_nocore_core_file_matches_executable_p 859 #endif 860 #ifndef MY_core_file_pid 861 #define MY_core_file_pid _bfd_nocore_core_file_pid 862 #endif 863 #ifndef MY_core_file_p 864 #define MY_core_file_p _bfd_dummy_target 865 #endif 866 867 #ifndef MY_bfd_debug_info_start 868 #define MY_bfd_debug_info_start bfd_void 869 #endif 870 #ifndef MY_bfd_debug_info_end 871 #define MY_bfd_debug_info_end bfd_void 872 #endif 873 #ifndef MY_bfd_debug_info_accumulate 874 #define MY_bfd_debug_info_accumulate \ 875 (void (*) (bfd*, struct bfd_section *)) bfd_void 876 #endif 877 878 #ifndef MY_core_file_failing_command 879 #define MY_core_file_failing_command NAME (aout, core_file_failing_command) 880 #endif 881 #ifndef MY_core_file_failing_signal 882 #define MY_core_file_failing_signal NAME (aout, core_file_failing_signal) 883 #endif 884 #ifndef MY_core_file_matches_executable_p 885 #define MY_core_file_matches_executable_p NAME (aout, core_file_matches_executable_p) 886 #endif 887 #ifndef MY_set_section_contents 888 #define MY_set_section_contents NAME (aout, set_section_contents) 889 #endif 890 #ifndef MY_get_section_contents 891 #define MY_get_section_contents aout_32_get_section_contents 892 #endif 893 #ifndef MY_get_section_contents_in_window 894 #define MY_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 895 #endif 896 #ifndef MY_new_section_hook 897 #define MY_new_section_hook NAME (aout, new_section_hook) 898 #endif 899 #ifndef MY_get_symtab_upper_bound 900 #define MY_get_symtab_upper_bound NAME (aout, get_symtab_upper_bound) 901 #endif 902 #ifndef MY_canonicalize_symtab 903 #define MY_canonicalize_symtab NAME (aout, canonicalize_symtab) 904 #endif 905 #ifndef MY_get_reloc_upper_bound 906 #define MY_get_reloc_upper_bound NAME (aout, get_reloc_upper_bound) 907 #endif 908 #ifndef MY_canonicalize_reloc 909 #define MY_canonicalize_reloc NAME (aout, canonicalize_reloc) 910 #endif 911 #ifndef MY_make_empty_symbol 912 #define MY_make_empty_symbol NAME (aout, make_empty_symbol) 913 #endif 914 #ifndef MY_print_symbol 915 #define MY_print_symbol NAME (aout, print_symbol) 916 #endif 917 #ifndef MY_get_symbol_info 918 #define MY_get_symbol_info NAME (aout, get_symbol_info) 919 #endif 920 #ifndef MY_get_lineno 921 #define MY_get_lineno NAME (aout, get_lineno) 922 #endif 923 #ifndef MY_set_arch_mach 924 #define MY_set_arch_mach tic30_aout_set_arch_mach 925 #endif 926 #ifndef MY_find_nearest_line 927 #define MY_find_nearest_line NAME (aout, find_nearest_line) 928 #endif 929 #ifndef MY_find_line 930 #define MY_find_line _bfd_nosymbols_find_line 931 #endif 932 #ifndef MY_find_inliner_info 933 #define MY_find_inliner_info _bfd_nosymbols_find_inliner_info 934 #endif 935 #ifndef MY_sizeof_headers 936 #define MY_sizeof_headers NAME (aout, sizeof_headers) 937 #endif 938 #ifndef MY_bfd_get_relocated_section_contents 939 #define MY_bfd_get_relocated_section_contents \ 940 bfd_generic_get_relocated_section_contents 941 #endif 942 #ifndef MY_bfd_relax_section 943 #define MY_bfd_relax_section bfd_generic_relax_section 944 #endif 945 #ifndef MY_bfd_gc_sections 946 #define MY_bfd_gc_sections bfd_generic_gc_sections 947 #endif 948 #ifndef MY_bfd_lookup_section_flags 949 #define MY_bfd_lookup_section_flags bfd_generic_lookup_section_flags 950 #endif 951 #ifndef MY_bfd_merge_sections 952 #define MY_bfd_merge_sections bfd_generic_merge_sections 953 #endif 954 #ifndef MY_bfd_is_group_section 955 #define MY_bfd_is_group_section bfd_generic_is_group_section 956 #endif 957 #ifndef MY_bfd_discard_group 958 #define MY_bfd_discard_group bfd_generic_discard_group 959 #endif 960 #ifndef MY_section_already_linked 961 #define MY_section_already_linked \ 962 _bfd_generic_section_already_linked 963 #endif 964 #ifndef MY_bfd_define_common_symbol 965 #define MY_bfd_define_common_symbol bfd_generic_define_common_symbol 966 #endif 967 #ifndef MY_bfd_reloc_type_lookup 968 #define MY_bfd_reloc_type_lookup tic30_aout_reloc_type_lookup 969 #endif 970 #ifndef MY_bfd_reloc_name_lookup 971 #define MY_bfd_reloc_name_lookup tic30_aout_reloc_name_lookup 972 #endif 973 #ifndef MY_bfd_make_debug_symbol 974 #define MY_bfd_make_debug_symbol 0 975 #endif 976 #ifndef MY_read_minisymbols 977 #define MY_read_minisymbols NAME (aout, read_minisymbols) 978 #endif 979 #ifndef MY_minisymbol_to_symbol 980 #define MY_minisymbol_to_symbol NAME (aout, minisymbol_to_symbol) 981 #endif 982 #ifndef MY_bfd_link_hash_table_create 983 #define MY_bfd_link_hash_table_create NAME (aout, link_hash_table_create) 984 #endif 985 #ifndef MY_bfd_link_add_symbols 986 #define MY_bfd_link_add_symbols NAME (aout, link_add_symbols) 987 #endif 988 #ifndef MY_bfd_link_just_syms 989 #define MY_bfd_link_just_syms _bfd_generic_link_just_syms 990 #endif 991 #ifndef MY_bfd_copy_link_hash_symbol_type 992 #define MY_bfd_copy_link_hash_symbol_type \ 993 _bfd_generic_copy_link_hash_symbol_type 994 #endif 995 #ifndef MY_bfd_link_split_section 996 #define MY_bfd_link_split_section _bfd_generic_link_split_section 997 #endif 998 999 #ifndef MY_bfd_copy_private_bfd_data 1000 #define MY_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data 1001 #endif 1002 1003 #ifndef MY_bfd_merge_private_bfd_data 1004 #define MY_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data 1005 #endif 1006 1007 #ifndef MY_bfd_copy_private_symbol_data 1008 #define MY_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data 1009 #endif 1010 1011 #ifndef MY_bfd_copy_private_header_data 1012 #define MY_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data 1013 #endif 1014 1015 #ifndef MY_bfd_print_private_bfd_data 1016 #define MY_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data 1017 #endif 1018 1019 #ifndef MY_bfd_set_private_flags 1020 #define MY_bfd_set_private_flags _bfd_generic_bfd_set_private_flags 1021 #endif 1022 1023 #ifndef MY_bfd_is_local_label_name 1024 #define MY_bfd_is_local_label_name bfd_generic_is_local_label_name 1025 #endif 1026 1027 #ifndef MY_bfd_is_target_special_symbol 1028 #define MY_bfd_is_target_special_symbol \ 1029 ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) 1030 #endif 1031 1032 #ifndef MY_bfd_free_cached_info 1033 #define MY_bfd_free_cached_info NAME (aout, bfd_free_cached_info) 1034 #endif 1035 1036 #ifndef MY_close_and_cleanup 1037 #define MY_close_and_cleanup MY_bfd_free_cached_info 1038 #endif 1039 1040 #ifndef MY_get_dynamic_symtab_upper_bound 1041 #define MY_get_dynamic_symtab_upper_bound \ 1042 _bfd_nodynamic_get_dynamic_symtab_upper_bound 1043 #endif 1044 #ifndef MY_canonicalize_dynamic_symtab 1045 #define MY_canonicalize_dynamic_symtab \ 1046 _bfd_nodynamic_canonicalize_dynamic_symtab 1047 #endif 1048 #ifndef MY_get_synthetic_symtab 1049 #define MY_get_synthetic_symtab \ 1050 _bfd_nodynamic_get_synthetic_symtab 1051 #endif 1052 #ifndef MY_get_dynamic_reloc_upper_bound 1053 #define MY_get_dynamic_reloc_upper_bound \ 1054 _bfd_nodynamic_get_dynamic_reloc_upper_bound 1055 #endif 1056 #ifndef MY_canonicalize_dynamic_reloc 1057 #define MY_canonicalize_dynamic_reloc \ 1058 _bfd_nodynamic_canonicalize_dynamic_reloc 1059 #endif 1060 1061 /* Aout symbols normally have leading underscores. */ 1062 #ifndef MY_symbol_leading_char 1063 #define MY_symbol_leading_char '_' 1064 #endif 1065 1066 /* Aout archives normally use spaces for padding. */ 1067 #ifndef AR_PAD_CHAR 1068 #define AR_PAD_CHAR ' ' 1069 #endif 1070 1071 #ifndef MY_BFD_TARGET 1072 const bfd_target tic30_aout_vec = 1073 { 1074 TARGETNAME, /* Name. */ 1075 bfd_target_aout_flavour, 1076 BFD_ENDIAN_BIG, /* Target byte order (big). */ 1077 BFD_ENDIAN_BIG, /* Target headers byte order (big). */ 1078 (HAS_RELOC | /* Object flags. */ 1079 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 1080 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ 1081 MY_symbol_leading_char, 1082 AR_PAD_CHAR, /* AR_pad_char. */ 1083 15, /* AR_max_namelen. */ 1084 0, /* match priority. */ 1085 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 1086 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 1087 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 1088 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 1089 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 1090 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 1091 {_bfd_dummy_target, MY_object_p, /* bfd_check_format. */ 1092 bfd_generic_archive_p, MY_core_file_p}, 1093 {bfd_false, MY_mkobject, /* bfd_set_format. */ 1094 _bfd_generic_mkarchive, bfd_false}, 1095 {bfd_false, MY_write_object_contents, /* bfd_write_contents. */ 1096 _bfd_write_archive_contents, bfd_false}, 1097 1098 BFD_JUMP_TABLE_GENERIC (MY), 1099 BFD_JUMP_TABLE_COPY (MY), 1100 BFD_JUMP_TABLE_CORE (MY), 1101 BFD_JUMP_TABLE_ARCHIVE (MY), 1102 BFD_JUMP_TABLE_SYMBOLS (MY), 1103 BFD_JUMP_TABLE_RELOCS (MY), 1104 BFD_JUMP_TABLE_WRITE (MY), 1105 BFD_JUMP_TABLE_LINK (MY), 1106 BFD_JUMP_TABLE_DYNAMIC (MY), 1107 1108 NULL, 1109 1110 MY_backend_data 1111 }; 1112 #endif /* MY_BFD_TARGET */ 1113
