| 1 | /* BFD back-end for Texas Instruments TMS320C80 Multimedia Video Processor (MVP). |
| 2 | Copyright 1996, 1997 Free Software Foundation, Inc. |
| 3 | |
| 4 | Written by Fred Fish (fnf@cygnus.com) |
| 5 | |
| 6 | There is nothing new under the sun. This file draws a lot on other |
| 7 | coff files. |
| 8 | |
| 9 | This file is part of BFD, the Binary File Descriptor library. |
| 10 | |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 2 of the License, or |
| 14 | (at your option) any later version. |
| 15 | |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | GNU General Public License for more details. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program; if not, write to the Free Software |
| 23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 24 | |
| 25 | #include "bfd.h" |
| 26 | #include "bfdlink.h" |
| 27 | #include "sysdep.h" |
| 28 | #include "libbfd.h" |
| 29 | #include "coff/tic80.h" |
| 30 | #include "coff/internal.h" |
| 31 | #include "libcoff.h" |
| 32 | |
| 33 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) |
| 34 | #define COFF_ALIGN_IN_SECTION_HEADER 1 |
| 35 | |
| 36 | #define GET_SCNHDR_FLAGS bfd_h_get_16 |
| 37 | #define PUT_SCNHDR_FLAGS bfd_h_put_16 |
| 38 | |
| 39 | static void rtype2howto |
| 40 | PARAMS ((arelent *cache_ptr, struct internal_reloc *dst)); |
| 41 | static bfd_reloc_status_type ppbase_reloc |
| 42 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 43 | static bfd_reloc_status_type glob15_reloc |
| 44 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 45 | static bfd_reloc_status_type glob16_reloc |
| 46 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 47 | static bfd_reloc_status_type local16_reloc |
| 48 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 49 | static boolean coff_tic80_relocate_section |
| 50 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 51 | struct internal_reloc *, struct internal_syment *, asection **)); |
| 52 | |
| 53 | static reloc_howto_type tic80_howto_table[] = |
| 54 | { |
| 55 | |
| 56 | HOWTO (R_RELLONG, /* type */ |
| 57 | 0, /* rightshift */ |
| 58 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 59 | 32, /* bitsize */ |
| 60 | false, /* pc_relative */ |
| 61 | 0, /* bitpos */ |
| 62 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 63 | NULL, /* special_function */ |
| 64 | "RELLONG", /* name */ |
| 65 | true, /* partial_inplace */ |
| 66 | 0xffffffff, /* src_mask */ |
| 67 | 0xffffffff, /* dst_mask */ |
| 68 | false), /* pcrel_offset */ |
| 69 | |
| 70 | HOWTO (R_MPPCR, /* type */ |
| 71 | 2, /* rightshift */ |
| 72 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 73 | 32, /* bitsize */ |
| 74 | true, /* pc_relative */ |
| 75 | 0, /* bitpos */ |
| 76 | complain_overflow_signed, /* complain_on_overflow */ |
| 77 | NULL, /* special_function */ |
| 78 | "MPPCR", /* name */ |
| 79 | true, /* partial_inplace */ |
| 80 | 0xffffffff, /* src_mask */ |
| 81 | 0xffffffff, /* dst_mask */ |
| 82 | true), /* pcrel_offset */ |
| 83 | |
| 84 | HOWTO (R_ABS, /* type */ |
| 85 | 0, /* rightshift */ |
| 86 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 87 | 32, /* bitsize */ |
| 88 | false, /* pc_relative */ |
| 89 | 0, /* bitpos */ |
| 90 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 91 | NULL, /* special_function */ |
| 92 | "ABS", /* name */ |
| 93 | true, /* partial_inplace */ |
| 94 | 0xffffffff, /* src_mask */ |
| 95 | 0xffffffff, /* dst_mask */ |
| 96 | false), /* pcrel_offset */ |
| 97 | |
| 98 | HOWTO (R_PPBASE, /* type */ |
| 99 | 0, /* rightshift */ |
| 100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 101 | 32, /* bitsize */ |
| 102 | false, /* pc_relative */ |
| 103 | 0, /* bitpos */ |
| 104 | complain_overflow_dont, /* complain_on_overflow */ |
| 105 | ppbase_reloc, /* special_function */ |
| 106 | "PPBASE", /* name */ |
| 107 | true, /* partial_inplace */ |
| 108 | 0xffffffff, /* src_mask */ |
| 109 | 0xffffffff, /* dst_mask */ |
| 110 | false), /* pcrel_offset */ |
| 111 | |
| 112 | HOWTO (R_PPLBASE, /* type */ |
| 113 | 0, /* rightshift */ |
| 114 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 115 | 32, /* bitsize */ |
| 116 | false, /* pc_relative */ |
| 117 | 0, /* bitpos */ |
| 118 | complain_overflow_dont, /* complain_on_overflow */ |
| 119 | ppbase_reloc, /* special_function */ |
| 120 | "PPLBASE", /* name */ |
| 121 | true, /* partial_inplace */ |
| 122 | 0xffffffff, /* src_mask */ |
| 123 | 0xffffffff, /* dst_mask */ |
| 124 | false), /* pcrel_offset */ |
| 125 | |
| 126 | HOWTO (R_PP15, /* type */ |
| 127 | 0, /* rightshift */ |
| 128 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 129 | 15, /* bitsize */ |
| 130 | false, /* pc_relative */ |
| 131 | 6, /* bitpos */ |
| 132 | complain_overflow_dont, /* complain_on_overflow */ |
| 133 | glob15_reloc, /* special_function */ |
| 134 | "PP15", /* name */ |
| 135 | true, /* partial_inplace */ |
| 136 | 0x1ffc0, /* src_mask */ |
| 137 | 0x1ffc0, /* dst_mask */ |
| 138 | false), /* pcrel_offset */ |
| 139 | |
| 140 | HOWTO (R_PP15W, /* type */ |
| 141 | 2, /* rightshift */ |
| 142 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 143 | 15, /* bitsize */ |
| 144 | false, /* pc_relative */ |
| 145 | 6, /* bitpos */ |
| 146 | complain_overflow_dont, /* complain_on_overflow */ |
| 147 | glob15_reloc, /* special_function */ |
| 148 | "PP15W", /* name */ |
| 149 | true, /* partial_inplace */ |
| 150 | 0x1ffc0, /* src_mask */ |
| 151 | 0x1ffc0, /* dst_mask */ |
| 152 | false), /* pcrel_offset */ |
| 153 | |
| 154 | HOWTO (R_PP15H, /* type */ |
| 155 | 1, /* rightshift */ |
| 156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 157 | 15, /* bitsize */ |
| 158 | false, /* pc_relative */ |
| 159 | 6, /* bitpos */ |
| 160 | complain_overflow_dont, /* complain_on_overflow */ |
| 161 | glob15_reloc, /* special_function */ |
| 162 | "PP15H", /* name */ |
| 163 | true, /* partial_inplace */ |
| 164 | 0x1ffc0, /* src_mask */ |
| 165 | 0x1ffc0, /* dst_mask */ |
| 166 | false), /* pcrel_offset */ |
| 167 | |
| 168 | HOWTO (R_PP16B, /* type */ |
| 169 | 0, /* rightshift */ |
| 170 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 171 | 16, /* bitsize */ |
| 172 | false, /* pc_relative */ |
| 173 | 6, /* bitpos */ |
| 174 | complain_overflow_dont, /* complain_on_overflow */ |
| 175 | glob16_reloc, /* special_function */ |
| 176 | "PP16B", /* name */ |
| 177 | true, /* partial_inplace */ |
| 178 | 0x3ffc0, /* src_mask */ |
| 179 | 0x3ffc0, /* dst_mask */ |
| 180 | false), /* pcrel_offset */ |
| 181 | |
| 182 | HOWTO (R_PPL15, /* type */ |
| 183 | 0, /* rightshift */ |
| 184 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 185 | 15, /* bitsize */ |
| 186 | false, /* pc_relative */ |
| 187 | 0, /* bitpos */ |
| 188 | complain_overflow_dont, /* complain_on_overflow */ |
| 189 | NULL, /* special_function */ |
| 190 | "PPL15", /* name */ |
| 191 | true, /* partial_inplace */ |
| 192 | 0x7fff, /* src_mask */ |
| 193 | 0x7fff, /* dst_mask */ |
| 194 | false), /* pcrel_offset */ |
| 195 | |
| 196 | HOWTO (R_PPL15W, /* type */ |
| 197 | 2, /* rightshift */ |
| 198 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 199 | 15, /* bitsize */ |
| 200 | false, /* pc_relative */ |
| 201 | 0, /* bitpos */ |
| 202 | complain_overflow_dont, /* complain_on_overflow */ |
| 203 | NULL, /* special_function */ |
| 204 | "PPL15W", /* name */ |
| 205 | true, /* partial_inplace */ |
| 206 | 0x7fff, /* src_mask */ |
| 207 | 0x7fff, /* dst_mask */ |
| 208 | false), /* pcrel_offset */ |
| 209 | |
| 210 | HOWTO (R_PPL15H, /* type */ |
| 211 | 1, /* rightshift */ |
| 212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 213 | 15, /* bitsize */ |
| 214 | false, /* pc_relative */ |
| 215 | 0, /* bitpos */ |
| 216 | complain_overflow_dont, /* complain_on_overflow */ |
| 217 | NULL, /* special_function */ |
| 218 | "PPL15H", /* name */ |
| 219 | true, /* partial_inplace */ |
| 220 | 0x7fff, /* src_mask */ |
| 221 | 0x7fff, /* dst_mask */ |
| 222 | false), /* pcrel_offset */ |
| 223 | |
| 224 | HOWTO (R_PPL16B, /* type */ |
| 225 | 0, /* rightshift */ |
| 226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 227 | 16, /* bitsize */ |
| 228 | false, /* pc_relative */ |
| 229 | 0, /* bitpos */ |
| 230 | complain_overflow_dont, /* complain_on_overflow */ |
| 231 | local16_reloc, /* special_function */ |
| 232 | "PPL16B", /* name */ |
| 233 | true, /* partial_inplace */ |
| 234 | 0xffff, /* src_mask */ |
| 235 | 0xffff, /* dst_mask */ |
| 236 | false), /* pcrel_offset */ |
| 237 | |
| 238 | HOWTO (R_PPN15, /* type */ |
| 239 | 0, /* rightshift */ |
| 240 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 241 | 15, /* bitsize */ |
| 242 | false, /* pc_relative */ |
| 243 | 6, /* bitpos */ |
| 244 | complain_overflow_dont, /* complain_on_overflow */ |
| 245 | glob15_reloc, /* special_function */ |
| 246 | "PPN15", /* name */ |
| 247 | true, /* partial_inplace */ |
| 248 | 0x1ffc0, /* src_mask */ |
| 249 | 0x1ffc0, /* dst_mask */ |
| 250 | false), /* pcrel_offset */ |
| 251 | |
| 252 | HOWTO (R_PPN15W, /* type */ |
| 253 | 2, /* rightshift */ |
| 254 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 255 | 15, /* bitsize */ |
| 256 | false, /* pc_relative */ |
| 257 | 6, /* bitpos */ |
| 258 | complain_overflow_dont, /* complain_on_overflow */ |
| 259 | glob15_reloc, /* special_function */ |
| 260 | "PPN15W", /* name */ |
| 261 | true, /* partial_inplace */ |
| 262 | 0x1ffc0, /* src_mask */ |
| 263 | 0x1ffc0, /* dst_mask */ |
| 264 | false), /* pcrel_offset */ |
| 265 | |
| 266 | HOWTO (R_PPN15H, /* type */ |
| 267 | 1, /* rightshift */ |
| 268 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 269 | 15, /* bitsize */ |
| 270 | false, /* pc_relative */ |
| 271 | 6, /* bitpos */ |
| 272 | complain_overflow_dont, /* complain_on_overflow */ |
| 273 | glob15_reloc, /* special_function */ |
| 274 | "PPN15H", /* name */ |
| 275 | true, /* partial_inplace */ |
| 276 | 0x1ffc0, /* src_mask */ |
| 277 | 0x1ffc0, /* dst_mask */ |
| 278 | false), /* pcrel_offset */ |
| 279 | |
| 280 | HOWTO (R_PPN16B, /* type */ |
| 281 | 0, /* rightshift */ |
| 282 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 283 | 16, /* bitsize */ |
| 284 | false, /* pc_relative */ |
| 285 | 6, /* bitpos */ |
| 286 | complain_overflow_dont, /* complain_on_overflow */ |
| 287 | glob16_reloc, /* special_function */ |
| 288 | "PPN16B", /* name */ |
| 289 | true, /* partial_inplace */ |
| 290 | 0x3ffc0, /* src_mask */ |
| 291 | 0x3ffc0, /* dst_mask */ |
| 292 | false), /* pcrel_offset */ |
| 293 | |
| 294 | HOWTO (R_PPLN15, /* type */ |
| 295 | 0, /* rightshift */ |
| 296 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 297 | 15, /* bitsize */ |
| 298 | false, /* pc_relative */ |
| 299 | 0, /* bitpos */ |
| 300 | complain_overflow_dont, /* complain_on_overflow */ |
| 301 | NULL, /* special_function */ |
| 302 | "PPLN15", /* name */ |
| 303 | true, /* partial_inplace */ |
| 304 | 0x7fff, /* src_mask */ |
| 305 | 0x7fff, /* dst_mask */ |
| 306 | false), /* pcrel_offset */ |
| 307 | |
| 308 | HOWTO (R_PPLN15W, /* type */ |
| 309 | 2, /* rightshift */ |
| 310 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 311 | 15, /* bitsize */ |
| 312 | false, /* pc_relative */ |
| 313 | 0, /* bitpos */ |
| 314 | complain_overflow_dont, /* complain_on_overflow */ |
| 315 | NULL, /* special_function */ |
| 316 | "PPLN15W", /* name */ |
| 317 | true, /* partial_inplace */ |
| 318 | 0x7fff, /* src_mask */ |
| 319 | 0x7fff, /* dst_mask */ |
| 320 | false), /* pcrel_offset */ |
| 321 | |
| 322 | HOWTO (R_PPLN15H, /* type */ |
| 323 | 1, /* rightshift */ |
| 324 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 325 | 15, /* bitsize */ |
| 326 | false, /* pc_relative */ |
| 327 | 0, /* bitpos */ |
| 328 | complain_overflow_dont, /* complain_on_overflow */ |
| 329 | NULL, /* special_function */ |
| 330 | "PPLN15H", /* name */ |
| 331 | true, /* partial_inplace */ |
| 332 | 0x7fff, /* src_mask */ |
| 333 | 0x7fff, /* dst_mask */ |
| 334 | false), /* pcrel_offset */ |
| 335 | |
| 336 | HOWTO (R_PPLN16B, /* type */ |
| 337 | 0, /* rightshift */ |
| 338 | -2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 339 | 15, /* bitsize */ |
| 340 | false, /* pc_relative */ |
| 341 | 0, /* bitpos */ |
| 342 | complain_overflow_dont, /* complain_on_overflow */ |
| 343 | local16_reloc, /* special_function */ |
| 344 | "PPLN16B", /* name */ |
| 345 | true, /* partial_inplace */ |
| 346 | 0xffff, /* src_mask */ |
| 347 | 0xffff, /* dst_mask */ |
| 348 | false) /* pcrel_offset */ |
| 349 | }; |
| 350 | \f |
| 351 | /* Special relocation functions, used when the output file is not |
| 352 | itself a COFF TIc80 file. */ |
| 353 | |
| 354 | /* This special function is used for the base address type |
| 355 | relocations. */ |
| 356 | |
| 357 | static bfd_reloc_status_type |
| 358 | ppbase_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 359 | error_message) |
| 360 | bfd *abfd; |
| 361 | arelent *reloc_entry; |
| 362 | asymbol *symbol_in; |
| 363 | PTR data; |
| 364 | asection *input_section; |
| 365 | bfd *output_bfd; |
| 366 | char **error_message; |
| 367 | { |
| 368 | /* FIXME. */ |
| 369 | abort (); |
| 370 | } |
| 371 | |
| 372 | /* This special function is used for the global 15 bit relocations. */ |
| 373 | |
| 374 | static bfd_reloc_status_type |
| 375 | glob15_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 376 | error_message) |
| 377 | bfd *abfd; |
| 378 | arelent *reloc_entry; |
| 379 | asymbol *symbol_in; |
| 380 | PTR data; |
| 381 | asection *input_section; |
| 382 | bfd *output_bfd; |
| 383 | char **error_message; |
| 384 | { |
| 385 | /* FIXME. */ |
| 386 | abort (); |
| 387 | } |
| 388 | |
| 389 | /* This special function is used for the global 16 bit relocations. */ |
| 390 | |
| 391 | static bfd_reloc_status_type |
| 392 | glob16_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 393 | error_message) |
| 394 | bfd *abfd; |
| 395 | arelent *reloc_entry; |
| 396 | asymbol *symbol_in; |
| 397 | PTR data; |
| 398 | asection *input_section; |
| 399 | bfd *output_bfd; |
| 400 | char **error_message; |
| 401 | { |
| 402 | /* FIXME. */ |
| 403 | abort (); |
| 404 | } |
| 405 | |
| 406 | /* This special function is used for the local 16 bit relocations. */ |
| 407 | |
| 408 | static bfd_reloc_status_type |
| 409 | local16_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 410 | error_message) |
| 411 | bfd *abfd; |
| 412 | arelent *reloc_entry; |
| 413 | asymbol *symbol_in; |
| 414 | PTR data; |
| 415 | asection *input_section; |
| 416 | bfd *output_bfd; |
| 417 | char **error_message; |
| 418 | { |
| 419 | /* FIXME. */ |
| 420 | abort (); |
| 421 | } |
| 422 | \f |
| 423 | /* Code to turn an external r_type into a pointer to an entry in the howto_table. |
| 424 | If passed an r_type we don't recognize the abort rather than silently failing |
| 425 | to generate an output file. */ |
| 426 | |
| 427 | static void |
| 428 | rtype2howto (cache_ptr, dst) |
| 429 | arelent *cache_ptr; |
| 430 | struct internal_reloc *dst; |
| 431 | { |
| 432 | unsigned int i; |
| 433 | |
| 434 | for (i = 0; i < sizeof tic80_howto_table / sizeof tic80_howto_table[0]; i++) |
| 435 | { |
| 436 | if (tic80_howto_table[i].type == dst->r_type) |
| 437 | { |
| 438 | cache_ptr->howto = tic80_howto_table + i; |
| 439 | return; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | (*_bfd_error_handler) ("Unrecognized reloc type 0x%x", |
| 444 | (unsigned int) dst->r_type); |
| 445 | cache_ptr->howto = tic80_howto_table + 0; |
| 446 | } |
| 447 | |
| 448 | #define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst) |
| 449 | #define coff_rtype_to_howto coff_tic80_rtype_to_howto |
| 450 | |
| 451 | static reloc_howto_type * |
| 452 | coff_tic80_rtype_to_howto (abfd, sec, rel, h, sym, addendp) |
| 453 | bfd *abfd; |
| 454 | asection *sec; |
| 455 | struct internal_reloc *rel; |
| 456 | struct coff_link_hash_entry *h; |
| 457 | struct internal_syment *sym; |
| 458 | bfd_vma *addendp; |
| 459 | { |
| 460 | arelent genrel; |
| 461 | |
| 462 | if (rel -> r_symndx == -1 && addendp != NULL) |
| 463 | { |
| 464 | /* This is a TI "internal relocation", which means that the relocation |
| 465 | amount is the amount by which the current section is being relocated |
| 466 | in the output section. */ |
| 467 | *addendp = (sec -> output_section -> vma + sec -> output_offset) - sec -> vma; |
| 468 | } |
| 469 | RTYPE2HOWTO (&genrel, rel); |
| 470 | return genrel.howto; |
| 471 | } |
| 472 | |
| 473 | #ifndef BADMAG |
| 474 | #define BADMAG(x) TIC80BADMAG(x) |
| 475 | #endif |
| 476 | \f |
| 477 | #define coff_relocate_section coff_tic80_relocate_section |
| 478 | |
| 479 | /* We need a special relocation routine to handle the PP relocs. Most |
| 480 | of this is a copy of _bfd_coff_generic_relocate_section. */ |
| 481 | |
| 482 | static boolean |
| 483 | coff_tic80_relocate_section (output_bfd, info, input_bfd, |
| 484 | input_section, contents, relocs, syms, |
| 485 | sections) |
| 486 | bfd *output_bfd; |
| 487 | struct bfd_link_info *info; |
| 488 | bfd *input_bfd; |
| 489 | asection *input_section; |
| 490 | bfd_byte *contents; |
| 491 | struct internal_reloc *relocs; |
| 492 | struct internal_syment *syms; |
| 493 | asection **sections; |
| 494 | { |
| 495 | struct internal_reloc *rel; |
| 496 | struct internal_reloc *relend; |
| 497 | |
| 498 | rel = relocs; |
| 499 | relend = rel + input_section->reloc_count; |
| 500 | for (; rel < relend; rel++) |
| 501 | { |
| 502 | long symndx; |
| 503 | struct coff_link_hash_entry *h; |
| 504 | struct internal_syment *sym; |
| 505 | bfd_vma addend; |
| 506 | bfd_vma val; |
| 507 | reloc_howto_type *howto; |
| 508 | bfd_reloc_status_type rstat; |
| 509 | bfd_vma addr; |
| 510 | |
| 511 | symndx = rel->r_symndx; |
| 512 | |
| 513 | if (symndx == -1) |
| 514 | { |
| 515 | h = NULL; |
| 516 | sym = NULL; |
| 517 | } |
| 518 | else |
| 519 | { |
| 520 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
| 521 | sym = syms + symndx; |
| 522 | } |
| 523 | |
| 524 | /* COFF treats common symbols in one of two ways. Either the |
| 525 | size of the symbol is included in the section contents, or it |
| 526 | is not. We assume that the size is not included, and force |
| 527 | the rtype_to_howto function to adjust the addend as needed. */ |
| 528 | |
| 529 | if (sym != NULL && sym->n_scnum != 0) |
| 530 | addend = - sym->n_value; |
| 531 | else |
| 532 | addend = 0; |
| 533 | |
| 534 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
| 535 | sym, &addend); |
| 536 | if (howto == NULL) |
| 537 | return false; |
| 538 | |
| 539 | val = 0; |
| 540 | |
| 541 | if (h == NULL) |
| 542 | { |
| 543 | asection *sec; |
| 544 | |
| 545 | if (symndx == -1) |
| 546 | { |
| 547 | sec = bfd_abs_section_ptr; |
| 548 | val = 0; |
| 549 | } |
| 550 | else |
| 551 | { |
| 552 | sec = sections[symndx]; |
| 553 | val = (sec->output_section->vma |
| 554 | + sec->output_offset |
| 555 | + sym->n_value); |
| 556 | if (! obj_pe (output_bfd)) |
| 557 | val -= sec->vma; |
| 558 | } |
| 559 | } |
| 560 | else |
| 561 | { |
| 562 | if (h->root.type == bfd_link_hash_defined |
| 563 | || h->root.type == bfd_link_hash_defweak) |
| 564 | { |
| 565 | asection *sec; |
| 566 | |
| 567 | sec = h->root.u.def.section; |
| 568 | val = (h->root.u.def.value |
| 569 | + sec->output_section->vma |
| 570 | + sec->output_offset); |
| 571 | } |
| 572 | |
| 573 | else if (! info->relocateable) |
| 574 | { |
| 575 | if (! ((*info->callbacks->undefined_symbol) |
| 576 | (info, h->root.root.string, input_bfd, input_section, |
| 577 | rel->r_vaddr - input_section->vma))) |
| 578 | return false; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | addr = rel->r_vaddr - input_section->vma; |
| 583 | |
| 584 | /* FIXME: This code assumes little endian, but the PP can |
| 585 | apparently be bi-endian. I don't know if the bi-endianness |
| 586 | applies to the instruction set or just to the data. */ |
| 587 | switch (howto->type) |
| 588 | { |
| 589 | default: |
| 590 | case R_ABS: |
| 591 | case R_RELLONGX: |
| 592 | case R_PPL15: |
| 593 | case R_PPL15W: |
| 594 | case R_PPL15H: |
| 595 | case R_PPLN15: |
| 596 | case R_PPLN15W: |
| 597 | case R_PPLN15H: |
| 598 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 599 | contents, addr, val, addend); |
| 600 | break; |
| 601 | |
| 602 | case R_PP15: |
| 603 | case R_PP15W: |
| 604 | case R_PP15H: |
| 605 | case R_PPN15: |
| 606 | case R_PPN15W: |
| 607 | case R_PPN15H: |
| 608 | /* Offset the address so that we can use 4 byte relocations. */ |
| 609 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 610 | contents + 2, addr, val, addend); |
| 611 | break; |
| 612 | |
| 613 | case R_PP16B: |
| 614 | case R_PPN16B: |
| 615 | { |
| 616 | /* The most significant bit is stored in bit 6. */ |
| 617 | bfd_byte hold; |
| 618 | |
| 619 | hold = contents[addr + 4]; |
| 620 | contents[addr + 4] &=~ 0x20; |
| 621 | contents[addr + 4] |= (contents[addr] >> 1) & 0x20; |
| 622 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 623 | contents + 2, addr, |
| 624 | val, addend); |
| 625 | contents[addr] &=~ 0x40; |
| 626 | contents[addr] |= (contents[addr + 4] << 1) & 0x40; |
| 627 | contents[addr + 4] &=~ 0x20; |
| 628 | contents[addr + 4] |= hold & 0x20; |
| 629 | break; |
| 630 | } |
| 631 | |
| 632 | case R_PPL16B: |
| 633 | case R_PPLN16B: |
| 634 | { |
| 635 | /* The most significant bit is stored in bit 28. */ |
| 636 | bfd_byte hold; |
| 637 | |
| 638 | hold = contents[addr + 1]; |
| 639 | contents[addr + 1] &=~ 0x80; |
| 640 | contents[addr + 1] |= (contents[addr + 3] << 3) & 0x80; |
| 641 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 642 | contents, addr, |
| 643 | val, addend); |
| 644 | contents[addr + 3] &= ~0x10; |
| 645 | contents[addr + 3] |= (contents[addr + 1] >> 3) & 0x10; |
| 646 | contents[addr + 1] &=~ 0x80; |
| 647 | contents[addr + 1] |= hold & 0x80; |
| 648 | break; |
| 649 | } |
| 650 | |
| 651 | case R_PPBASE: |
| 652 | /* Parameter RAM is from 0x1000000 to 0x1000800. */ |
| 653 | contents[addr] &=~ 0x3; |
| 654 | if (val >= 0x1000000 && val < 0x1000800) |
| 655 | contents[addr] |= 0x3; |
| 656 | else |
| 657 | contents[addr] |= 0x2; |
| 658 | rstat = bfd_reloc_ok; |
| 659 | break; |
| 660 | |
| 661 | case R_PPLBASE: |
| 662 | /* Parameter RAM is from 0x1000000 to 0x1000800. */ |
| 663 | contents[addr + 2] &= ~0xc0; |
| 664 | if (val >= 0x1000000 && val < 0x1000800) |
| 665 | contents[addr + 2] |= 0xc0; |
| 666 | else |
| 667 | contents[addr + 2] |= 0x80; |
| 668 | rstat = bfd_reloc_ok; |
| 669 | break; |
| 670 | } |
| 671 | |
| 672 | switch (rstat) |
| 673 | { |
| 674 | default: |
| 675 | abort (); |
| 676 | case bfd_reloc_ok: |
| 677 | break; |
| 678 | case bfd_reloc_outofrange: |
| 679 | (*_bfd_error_handler) |
| 680 | ("%s: bad reloc address 0x%lx in section `%s'", |
| 681 | bfd_get_filename (input_bfd), |
| 682 | (unsigned long) rel->r_vaddr, |
| 683 | bfd_get_section_name (input_bfd, input_section)); |
| 684 | return false; |
| 685 | case bfd_reloc_overflow: |
| 686 | { |
| 687 | const char *name; |
| 688 | char buf[SYMNMLEN + 1]; |
| 689 | |
| 690 | if (symndx == -1) |
| 691 | name = "*ABS*"; |
| 692 | else if (h != NULL) |
| 693 | name = h->root.root.string; |
| 694 | else |
| 695 | { |
| 696 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); |
| 697 | if (name == NULL) |
| 698 | return false; |
| 699 | } |
| 700 | |
| 701 | if (! ((*info->callbacks->reloc_overflow) |
| 702 | (info, name, howto->name, (bfd_vma) 0, input_bfd, |
| 703 | input_section, rel->r_vaddr - input_section->vma))) |
| 704 | return false; |
| 705 | } |
| 706 | } |
| 707 | } |
| 708 | return true; |
| 709 | } |
| 710 | \f |
| 711 | #define TIC80COFF 1 /* Customize coffcode.h */ |
| 712 | #undef C_AUTOARG /* Clashes with TIc80's C_UEXT */ |
| 713 | #undef C_LASTENT /* Clashes with TIc80's C_STATLAB */ |
| 714 | #include "coffcode.h" |
| 715 | |
| 716 | const bfd_target |
| 717 | tic80coff_vec = |
| 718 | { |
| 719 | "coff-tic80", /* name */ |
| 720 | bfd_target_coff_flavour, |
| 721 | BFD_ENDIAN_LITTLE, /* data byte order is little (arch supports both) */ |
| 722 | BFD_ENDIAN_LITTLE, /* header byte order is little */ |
| 723 | |
| 724 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 725 | HAS_LINENO | HAS_DEBUG | |
| 726 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 727 | |
| 728 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 729 | '_', /* leading underscore */ |
| 730 | '/', /* ar_pad_char */ |
| 731 | 15, /* ar_max_namelen */ |
| 732 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 733 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 734 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
| 735 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 736 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 737 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| 738 | |
| 739 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ |
| 740 | bfd_generic_archive_p, _bfd_dummy_target}, |
| 741 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
| 742 | bfd_false}, |
| 743 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
| 744 | _bfd_write_archive_contents, bfd_false}, |
| 745 | |
| 746 | BFD_JUMP_TABLE_GENERIC (coff), |
| 747 | BFD_JUMP_TABLE_COPY (coff), |
| 748 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 749 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 750 | BFD_JUMP_TABLE_SYMBOLS (coff), |
| 751 | BFD_JUMP_TABLE_RELOCS (coff), |
| 752 | BFD_JUMP_TABLE_WRITE (coff), |
| 753 | BFD_JUMP_TABLE_LINK (coff), |
| 754 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 755 | |
| 756 | COFF_SWAP_TABLE |
| 757 | }; |